cpython-lru_cache-weakref: Lib/threading.py annotate

annotate Lib/threading.py @ 57303:4aa4c19dfaed legacy-trunk

#1757126: fix typo with the cyrillic_asian alias

author	Philip Jenvey <pjenvey@underboss.org>
date	Tue, 17 Nov 2009 02:42:26 +0000
parents	fbf41b1124d8
children	cc367c077245

rev	line source
24833 ca58f5a4558b Docstring nits: The module is neither proposed nor new. Jeremy Hylton <jeremy@alum.mit.edu> parents: 24830 diff changeset	1 """Thread module emulating a subset of Java's threading model."""
7949 58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	2
26905 7ea7637341d0 - prefer "import ... as" to "import / (assignments) / del" for most things Fred Drake <fdrake@acm.org> parents: 26883 diff changeset	3 import sys as _sys
7ea7637341d0 - prefer "import ... as" to "import / (assignments) / del" for most things Fred Drake <fdrake@acm.org> parents: 26883 diff changeset	4
7ea7637341d0 - prefer "import ... as" to "import / (assignments) / del" for most things Fred Drake <fdrake@acm.org> parents: 26883 diff changeset	5 try:
7ea7637341d0 - prefer "import ... as" to "import / (assignments) / del" for most things Fred Drake <fdrake@acm.org> parents: 26883 diff changeset	6 import thread
7ea7637341d0 - prefer "import ... as" to "import / (assignments) / del" for most things Fred Drake <fdrake@acm.org> parents: 26883 diff changeset	7 except ImportError:
7ea7637341d0 - prefer "import ... as" to "import / (assignments) / del" for most things Fred Drake <fdrake@acm.org> parents: 26883 diff changeset	8 del _sys.modules[__name__]
7ea7637341d0 - prefer "import ... as" to "import / (assignments) / del" for most things Fred Drake <fdrake@acm.org> parents: 26883 diff changeset	9 raise
7ea7637341d0 - prefer "import ... as" to "import / (assignments) / del" for most things Fred Drake <fdrake@acm.org> parents: 26883 diff changeset	10
46220 600f2ff8aa9e Block the sys.exc_clear -3 warning from threading.py. Jeffrey Yasskin <jyasskin@gmail.com> parents: 46182 diff changeset	11 import warnings
47601 8dc4312a2f75 add aliases to threading module Benjamin Peterson <benjamin@python.org> parents: 47598 diff changeset	12
8dc4312a2f75 add aliases to threading module Benjamin Peterson <benjamin@python.org> parents: 47598 diff changeset	13 from functools import wraps
26905 7ea7637341d0 - prefer "import ... as" to "import / (assignments) / del" for most things Fred Drake <fdrake@acm.org> parents: 26883 diff changeset	14 from time import time as _time, sleep as _sleep
30862 d45f8981fdea Add traceback.format_exc(). Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 29725 diff changeset	15 from traceback import format_exc as _format_exc
31436 63fa60f2d61c * Move collections.deque() in from the sandbox Raymond Hettinger <python@rcn.com> parents: 30862 diff changeset	16 from collections import deque
7949 58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	17
48942 bc585b4d4606 remove py3k warnings about the threading api; update docs Benjamin Peterson <benjamin@python.org> parents: 48830 diff changeset	18 # Note regarding PEP 8 compliant aliases
bc585b4d4606 remove py3k warnings about the threading api; update docs Benjamin Peterson <benjamin@python.org> parents: 48830 diff changeset	19 # This threading model was originally inspired by Java, and inherited
bc585b4d4606 remove py3k warnings about the threading api; update docs Benjamin Peterson <benjamin@python.org> parents: 48830 diff changeset	20 # the convention of camelCase function and method names from that
bc585b4d4606 remove py3k warnings about the threading api; update docs Benjamin Peterson <benjamin@python.org> parents: 48830 diff changeset	21 # language. While those names are not in any imminent danger of being
bc585b4d4606 remove py3k warnings about the threading api; update docs Benjamin Peterson <benjamin@python.org> parents: 48830 diff changeset	22 # deprecated, starting with Python 2.6, the module now provides a
bc585b4d4606 remove py3k warnings about the threading api; update docs Benjamin Peterson <benjamin@python.org> parents: 48830 diff changeset	23 # PEP 8 compliant alias for any such method name.
bc585b4d4606 remove py3k warnings about the threading api; update docs Benjamin Peterson <benjamin@python.org> parents: 48830 diff changeset	24 # Using the new PEP 8 compliant names also facilitates substitution
bc585b4d4606 remove py3k warnings about the threading api; update docs Benjamin Peterson <benjamin@python.org> parents: 48830 diff changeset	25 # with the multiprocessing module, which doesn't provide the old
bc585b4d4606 remove py3k warnings about the threading api; update docs Benjamin Peterson <benjamin@python.org> parents: 48830 diff changeset	26 # Java inspired names.
bc585b4d4606 remove py3k warnings about the threading api; update docs Benjamin Peterson <benjamin@python.org> parents: 48830 diff changeset	27
bc585b4d4606 remove py3k warnings about the threading api; update docs Benjamin Peterson <benjamin@python.org> parents: 48830 diff changeset	28
7949 58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	29 # Rename some stuff so "from threading import *" is safe
47606 696344ef8bc0 add old names back into __all__ Benjamin Peterson <benjamin@python.org> parents: 47601 diff changeset	30 __all__ = ['activeCount', 'active_count', 'Condition', 'currentThread',
696344ef8bc0 add old names back into __all__ Benjamin Peterson <benjamin@python.org> parents: 47601 diff changeset	31 'current_thread', 'enumerate', 'Event',
29676 052bfcbabb7b Provide dummy (do-nothing) settrace() and setprofile() functions until Tim Peters <tim.peters@gmail.com> parents: 28089 diff changeset	32 'Lock', 'RLock', 'Semaphore', 'BoundedSemaphore', 'Thread',
38794 f7d23bca599f Patch #1454481: Make thread stack size runtime tunable. Andrew MacIntyre <andymac@bullseye.apana.org.au> parents: 38592 diff changeset	33 'Timer', 'setprofile', 'settrace', 'local', 'stack_size']
7949 58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	34
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	35 _start_new_thread = thread.start_new_thread
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	36 _allocate_lock = thread.allocate_lock
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	37 _get_ident = thread.get_ident
12813 f1f9c30a4156 patch from Charles Waldman-- Jeremy Hylton <jeremy@alum.mit.edu> parents: 11876 diff changeset	38 ThreadError = thread.error
7949 58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	39 del thread
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	40
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	41
46220 600f2ff8aa9e Block the sys.exc_clear -3 warning from threading.py. Jeffrey Yasskin <jyasskin@gmail.com> parents: 46182 diff changeset	42 # sys.exc_clear is used to work around the fact that except blocks
600f2ff8aa9e Block the sys.exc_clear -3 warning from threading.py. Jeffrey Yasskin <jyasskin@gmail.com> parents: 46182 diff changeset	43 # don't fully clear the exception until 3.0.
600f2ff8aa9e Block the sys.exc_clear -3 warning from threading.py. Jeffrey Yasskin <jyasskin@gmail.com> parents: 46182 diff changeset	44 warnings.filterwarnings('ignore', category=DeprecationWarning,
600f2ff8aa9e Block the sys.exc_clear -3 warning from threading.py. Jeffrey Yasskin <jyasskin@gmail.com> parents: 46182 diff changeset	45 module='threading', message='sys.exc_clear')
600f2ff8aa9e Block the sys.exc_clear -3 warning from threading.py. Jeffrey Yasskin <jyasskin@gmail.com> parents: 46182 diff changeset	46
29725 7d0af4561eed Make the classes exposed by threading.py new-style classes. This is Tim Peters <tim.peters@gmail.com> parents: 29724 diff changeset	47 # Debug support (adapted from ihooks.py).
7d0af4561eed Make the classes exposed by threading.py new-style classes. This is Tim Peters <tim.peters@gmail.com> parents: 29724 diff changeset	48 # All the major classes here derive from _Verbose. We force that to
7d0af4561eed Make the classes exposed by threading.py new-style classes. This is Tim Peters <tim.peters@gmail.com> parents: 29724 diff changeset	49 # be a new-style class so that all the major classes here are new-style.
7d0af4561eed Make the classes exposed by threading.py new-style classes. This is Tim Peters <tim.peters@gmail.com> parents: 29724 diff changeset	50 # This helps debugging (type(instance) is more revealing for instances
7d0af4561eed Make the classes exposed by threading.py new-style classes. This is Tim Peters <tim.peters@gmail.com> parents: 29724 diff changeset	51 # of new-style classes).
7949 58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	52
29724 3b7b4fd5f7ca Resolved minor XXX question in the obvious way. Tim Peters <tim.peters@gmail.com> parents: 29686 diff changeset	53 _VERBOSE = False
7949 58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	54
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	55 if __debug__:
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	56
29725 7d0af4561eed Make the classes exposed by threading.py new-style classes. This is Tim Peters <tim.peters@gmail.com> parents: 29724 diff changeset	57 class _Verbose(object):
7949 58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	58
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	59 def __init__(self, verbose=None):
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	60 if verbose is None:
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	61 verbose = _VERBOSE
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	62 self.__verbose = verbose
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	63
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	64 def _note(self, format, *args):
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	65 if self.__verbose:
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	66 format = format % args
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	67 format = "%s: %s\n" % (
48830 f970a4f7560f fix a few get_name() calls and turn then to .name Benjamin Peterson <benjamin@python.org> parents: 48295 diff changeset	68 current_thread().name, format)
7949 58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	69 _sys.stderr.write(format)
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	70
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	71 else:
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	72 # Disable this when using "python -O"
29725 7d0af4561eed Make the classes exposed by threading.py new-style classes. This is Tim Peters <tim.peters@gmail.com> parents: 29724 diff changeset	73 class _Verbose(object):
7949 58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	74 def __init__(self, verbose=None):
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	75 pass
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	76 def _note(self, *args):
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	77 pass
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	78
29679 d0f15977f37f Add settrace() and setprofile() functions to the threading library. Jeremy Hylton <jeremy@alum.mit.edu> parents: 29676 diff changeset	79 # Support for profile and trace hooks
d0f15977f37f Add settrace() and setprofile() functions to the threading library. Jeremy Hylton <jeremy@alum.mit.edu> parents: 29676 diff changeset	80
d0f15977f37f Add settrace() and setprofile() functions to the threading library. Jeremy Hylton <jeremy@alum.mit.edu> parents: 29676 diff changeset	81 _profile_hook = None
d0f15977f37f Add settrace() and setprofile() functions to the threading library. Jeremy Hylton <jeremy@alum.mit.edu> parents: 29676 diff changeset	82 _trace_hook = None
d0f15977f37f Add settrace() and setprofile() functions to the threading library. Jeremy Hylton <jeremy@alum.mit.edu> parents: 29676 diff changeset	83
d0f15977f37f Add settrace() and setprofile() functions to the threading library. Jeremy Hylton <jeremy@alum.mit.edu> parents: 29676 diff changeset	84 def setprofile(func):
d0f15977f37f Add settrace() and setprofile() functions to the threading library. Jeremy Hylton <jeremy@alum.mit.edu> parents: 29676 diff changeset	85 global _profile_hook
d0f15977f37f Add settrace() and setprofile() functions to the threading library. Jeremy Hylton <jeremy@alum.mit.edu> parents: 29676 diff changeset	86 _profile_hook = func
29686 371092ce5c2b Whitespace normalization. Tim Peters <tim.peters@gmail.com> parents: 29683 diff changeset	87
29679 d0f15977f37f Add settrace() and setprofile() functions to the threading library. Jeremy Hylton <jeremy@alum.mit.edu> parents: 29676 diff changeset	88 def settrace(func):
d0f15977f37f Add settrace() and setprofile() functions to the threading library. Jeremy Hylton <jeremy@alum.mit.edu> parents: 29676 diff changeset	89 global _trace_hook
d0f15977f37f Add settrace() and setprofile() functions to the threading library. Jeremy Hylton <jeremy@alum.mit.edu> parents: 29676 diff changeset	90 _trace_hook = func
7949 58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	91
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	92 # Synchronization classes
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	93
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	94 Lock = _allocate_lock
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	95
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	96 def RLock(args, *kwargs):
28089 14f65d661084 Get rid of many apply() calls. Guido van Rossum <guido@python.org> parents: 26905 diff changeset	97 return _RLock(args, *kwargs)
7949 58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	98
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	99 class _RLock(_Verbose):
15873 3dd217fbdd59 Whitespace normalization. Tim Peters <tim.peters@gmail.com> parents: 15586 diff changeset	100
7949 58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	101 def __init__(self, verbose=None):
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	102 _Verbose.__init__(self, verbose)
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	103 self.__block = _allocate_lock()
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	104 self.__owner = None
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	105 self.__count = 0
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	106
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	107 def __repr__(self):
42410 b6068dd6ae00 Eliminate RLock race condition reported in SF bug #1764059 Nick Coghlan <ncoghlan@gmail.com> parents: 41960 diff changeset	108 owner = self.__owner
57157 fbf41b1124d8 Issue #7282: Fix a memory leak when an RLock was used in a thread other Antoine Pitrou <solipsis@pitrou.net> parents: 57118 diff changeset	109 try:
fbf41b1124d8 Issue #7282: Fix a memory leak when an RLock was used in a thread other Antoine Pitrou <solipsis@pitrou.net> parents: 57118 diff changeset	110 owner = _active[owner].name
fbf41b1124d8 Issue #7282: Fix a memory leak when an RLock was used in a thread other Antoine Pitrou <solipsis@pitrou.net> parents: 57118 diff changeset	111 except KeyError:
fbf41b1124d8 Issue #7282: Fix a memory leak when an RLock was used in a thread other Antoine Pitrou <solipsis@pitrou.net> parents: 57118 diff changeset	112 pass
fbf41b1124d8 Issue #7282: Fix a memory leak when an RLock was used in a thread other Antoine Pitrou <solipsis@pitrou.net> parents: 57118 diff changeset	113 return "<%s owner=%r count=%d>" % (
fbf41b1124d8 Issue #7282: Fix a memory leak when an RLock was used in a thread other Antoine Pitrou <solipsis@pitrou.net> parents: 57118 diff changeset	114 self.__class__.__name__, owner, self.__count)
7949 58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	115
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	116 def acquire(self, blocking=1):
57157 fbf41b1124d8 Issue #7282: Fix a memory leak when an RLock was used in a thread other Antoine Pitrou <solipsis@pitrou.net> parents: 57118 diff changeset	117 me = _get_ident()
fbf41b1124d8 Issue #7282: Fix a memory leak when an RLock was used in a thread other Antoine Pitrou <solipsis@pitrou.net> parents: 57118 diff changeset	118 if self.__owner == me:
7949 58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	119 self.__count = self.__count + 1
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	120 if __debug__:
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	121 self._note("%s.acquire(%s): recursive success", self, blocking)
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	122 return 1
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	123 rc = self.__block.acquire(blocking)
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	124 if rc:
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	125 self.__owner = me
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	126 self.__count = 1
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	127 if __debug__:
34512 cb7896d77de5 Fixed typo in verbose output. Brett Cannon <bcannon@gmail.com> parents: 34363 diff changeset	128 self._note("%s.acquire(%s): initial success", self, blocking)
7949 58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	129 else:
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	130 if __debug__:
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	131 self._note("%s.acquire(%s): failure", self, blocking)
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	132 return rc
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	133
36737 fa92fe15251a Updates to the with-statement: Guido van Rossum <guido@python.org> parents: 35932 diff changeset	134 __enter__ = acquire
fa92fe15251a Updates to the with-statement: Guido van Rossum <guido@python.org> parents: 35932 diff changeset	135
7949 58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	136 def release(self):
57157 fbf41b1124d8 Issue #7282: Fix a memory leak when an RLock was used in a thread other Antoine Pitrou <solipsis@pitrou.net> parents: 57118 diff changeset	137 if self.__owner != _get_ident():
56511 03854732a6c2 #7125: fix typo. Georg Brandl <georg@python.org> parents: 52593 diff changeset	138 raise RuntimeError("cannot release un-acquired lock")
7949 58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	139 self.__count = count = self.__count - 1
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	140 if not count:
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	141 self.__owner = None
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	142 self.__block.release()
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	143 if __debug__:
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	144 self._note("%s.release(): final release", self)
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	145 else:
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	146 if __debug__:
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	147 self._note("%s.release(): non-final release", self)
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	148
36737 fa92fe15251a Updates to the with-statement: Guido van Rossum <guido@python.org> parents: 35932 diff changeset	149 def __exit__(self, t, v, tb):
fa92fe15251a Updates to the with-statement: Guido van Rossum <guido@python.org> parents: 35932 diff changeset	150 self.release()
fa92fe15251a Updates to the with-statement: Guido van Rossum <guido@python.org> parents: 35932 diff changeset	151
7949 58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	152 # Internal methods used by condition variables
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	153
48131 5279d7961093 Remove a tuple unpacking in a parameter list to suppress the SyntaxWarning with Brett Cannon <bcannon@gmail.com> parents: 47985 diff changeset	154 def _acquire_restore(self, count_owner):
5279d7961093 Remove a tuple unpacking in a parameter list to suppress the SyntaxWarning with Brett Cannon <bcannon@gmail.com> parents: 47985 diff changeset	155 count, owner = count_owner
7949 58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	156 self.__block.acquire()
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	157 self.__count = count
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	158 self.__owner = owner
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	159 if __debug__:
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	160 self._note("%s._acquire_restore()", self)
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	161
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	162 def _release_save(self):
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	163 if __debug__:
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	164 self._note("%s._release_save()", self)
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	165 count = self.__count
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	166 self.__count = 0
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	167 owner = self.__owner
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	168 self.__owner = None
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	169 self.__block.release()
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	170 return (count, owner)
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	171
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	172 def _is_owned(self):
57157 fbf41b1124d8 Issue #7282: Fix a memory leak when an RLock was used in a thread other Antoine Pitrou <solipsis@pitrou.net> parents: 57118 diff changeset	173 return self.__owner == _get_ident()
7949 58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	174
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	175
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	176 def Condition(args, *kwargs):
28089 14f65d661084 Get rid of many apply() calls. Guido van Rossum <guido@python.org> parents: 26905 diff changeset	177 return _Condition(args, *kwargs)
7949 58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	178
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	179 class _Condition(_Verbose):
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	180
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	181 def __init__(self, lock=None, verbose=None):
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	182 _Verbose.__init__(self, verbose)
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	183 if lock is None:
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	184 lock = RLock()
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	185 self.__lock = lock
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	186 # Export the lock's acquire() and release() methods
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	187 self.acquire = lock.acquire
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	188 self.release = lock.release
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	189 # If the lock defines _release_save() and/or _acquire_restore(),
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	190 # these override the default implementations (which just call
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	191 # release() and acquire() on the lock). Ditto for _is_owned().
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	192 try:
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	193 self._release_save = lock._release_save
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	194 except AttributeError:
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	195 pass
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	196 try:
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	197 self._acquire_restore = lock._acquire_restore
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	198 except AttributeError:
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	199 pass
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	200 try:
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	201 self._is_owned = lock._is_owned
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	202 except AttributeError:
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	203 pass
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	204 self.__waiters = []
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	205
38084 a812d0fae74a Get rid of __context__, per the latest changes to PEP 343 and python-dev Guido van Rossum <guido@python.org> parents: 37983 diff changeset	206 def __enter__(self):
a812d0fae74a Get rid of __context__, per the latest changes to PEP 343 and python-dev Guido van Rossum <guido@python.org> parents: 37983 diff changeset	207 return self.__lock.__enter__()
a812d0fae74a Get rid of __context__, per the latest changes to PEP 343 and python-dev Guido van Rossum <guido@python.org> parents: 37983 diff changeset	208
a812d0fae74a Get rid of __context__, per the latest changes to PEP 343 and python-dev Guido van Rossum <guido@python.org> parents: 37983 diff changeset	209 def __exit__(self, *args):
a812d0fae74a Get rid of __context__, per the latest changes to PEP 343 and python-dev Guido van Rossum <guido@python.org> parents: 37983 diff changeset	210 return self.__lock.__exit__(*args)
36737 fa92fe15251a Updates to the with-statement: Guido van Rossum <guido@python.org> parents: 35932 diff changeset	211
7949 58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	212 def __repr__(self):
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	213 return "<Condition(%s, %d)>" % (self.__lock, len(self.__waiters))
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	214
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	215 def _release_save(self):
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	216 self.__lock.release() # No state to save
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	217
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	218 def _acquire_restore(self, x):
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	219 self.__lock.acquire() # Ignore saved state
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	220
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	221 def _is_owned(self):
47598 c349f9fbc704 give the threading API PEP 8 names Benjamin Peterson <benjamin@python.org> parents: 47438 diff changeset	222 # Return True if lock is owned by current_thread.
24827 e5a07cc81559 Explain a minor mystery. Jeremy Hylton <jeremy@alum.mit.edu> parents: 24058 diff changeset	223 # This method is called only if __lock doesn't have _is_owned().
7949 58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	224 if self.__lock.acquire(0):
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	225 self.__lock.release()
22830 a9dd5e6d6805 Convert a pile of obvious "yes/no" functions to return bool. Tim Peters <tim.peters@gmail.com> parents: 21981 diff changeset	226 return False
7949 58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	227 else:
22830 a9dd5e6d6805 Convert a pile of obvious "yes/no" functions to return bool. Tim Peters <tim.peters@gmail.com> parents: 21981 diff changeset	228 return True
7949 58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	229
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	230 def wait(self, timeout=None):
41960 588686d4c2cf Patch #1731049: make threading.py use a proper "raise" when checking internal state, rather than assert statements (which get stripped out by -O). Collin Winter <collinw@gmail.com> parents: 40542 diff changeset	231 if not self._is_owned():
56511 03854732a6c2 #7125: fix typo. Georg Brandl <georg@python.org> parents: 52593 diff changeset	232 raise RuntimeError("cannot wait on un-acquired lock")
7949 58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	233 waiter = _allocate_lock()
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	234 waiter.acquire()
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	235 self.__waiters.append(waiter)
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	236 saved_state = self._release_save()
17303 836cdf8d1245 SF bug [#410708] Condition.wait() and KeyboardInterrupt. Tim Peters <tim.peters@gmail.com> parents: 15873 diff changeset	237 try: # restore state no matter what (e.g., KeyboardInterrupt)
836cdf8d1245 SF bug [#410708] Condition.wait() and KeyboardInterrupt. Tim Peters <tim.peters@gmail.com> parents: 15873 diff changeset	238 if timeout is None:
836cdf8d1245 SF bug [#410708] Condition.wait() and KeyboardInterrupt. Tim Peters <tim.peters@gmail.com> parents: 15873 diff changeset	239 waiter.acquire()
7949 58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	240 if __debug__:
17303 836cdf8d1245 SF bug [#410708] Condition.wait() and KeyboardInterrupt. Tim Peters <tim.peters@gmail.com> parents: 15873 diff changeset	241 self._note("%s.wait(): got it", self)
7949 58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	242 else:
19184 2967ca96d07e _Condition.wait(): never sleep longer than the timeout time remaining, Tim Peters <tim.peters@gmail.com> parents: 17303 diff changeset	243 # Balancing act: We can't afford a pure busy loop, so we
2967ca96d07e _Condition.wait(): never sleep longer than the timeout time remaining, Tim Peters <tim.peters@gmail.com> parents: 17303 diff changeset	244 # have to sleep; but if we sleep the whole timeout time,
2967ca96d07e _Condition.wait(): never sleep longer than the timeout time remaining, Tim Peters <tim.peters@gmail.com> parents: 17303 diff changeset	245 # we'll be unresponsive. The scheme here sleeps very
2967ca96d07e _Condition.wait(): never sleep longer than the timeout time remaining, Tim Peters <tim.peters@gmail.com> parents: 17303 diff changeset	246 # little at first, longer as time goes on, but never longer
2967ca96d07e _Condition.wait(): never sleep longer than the timeout time remaining, Tim Peters <tim.peters@gmail.com> parents: 17303 diff changeset	247 # than 20 times per second (or the timeout time remaining).
17303 836cdf8d1245 SF bug [#410708] Condition.wait() and KeyboardInterrupt. Tim Peters <tim.peters@gmail.com> parents: 15873 diff changeset	248 endtime = _time() + timeout
19184 2967ca96d07e _Condition.wait(): never sleep longer than the timeout time remaining, Tim Peters <tim.peters@gmail.com> parents: 17303 diff changeset	249 delay = 0.0005 # 500 us -> initial delay of 1 ms
22867 e2f2187c3d2c Partial introduction of bools where appropriate. Guido van Rossum <guido@python.org> parents: 22830 diff changeset	250 while True:
17303 836cdf8d1245 SF bug [#410708] Condition.wait() and KeyboardInterrupt. Tim Peters <tim.peters@gmail.com> parents: 15873 diff changeset	251 gotit = waiter.acquire(0)
19184 2967ca96d07e _Condition.wait(): never sleep longer than the timeout time remaining, Tim Peters <tim.peters@gmail.com> parents: 17303 diff changeset	252 if gotit:
17303 836cdf8d1245 SF bug [#410708] Condition.wait() and KeyboardInterrupt. Tim Peters <tim.peters@gmail.com> parents: 15873 diff changeset	253 break
19184 2967ca96d07e _Condition.wait(): never sleep longer than the timeout time remaining, Tim Peters <tim.peters@gmail.com> parents: 17303 diff changeset	254 remaining = endtime - _time()
2967ca96d07e _Condition.wait(): never sleep longer than the timeout time remaining, Tim Peters <tim.peters@gmail.com> parents: 17303 diff changeset	255 if remaining <= 0:
2967ca96d07e _Condition.wait(): never sleep longer than the timeout time remaining, Tim Peters <tim.peters@gmail.com> parents: 17303 diff changeset	256 break
2967ca96d07e _Condition.wait(): never sleep longer than the timeout time remaining, Tim Peters <tim.peters@gmail.com> parents: 17303 diff changeset	257 delay = min(delay * 2, remaining, .05)
17303 836cdf8d1245 SF bug [#410708] Condition.wait() and KeyboardInterrupt. Tim Peters <tim.peters@gmail.com> parents: 15873 diff changeset	258 _sleep(delay)
836cdf8d1245 SF bug [#410708] Condition.wait() and KeyboardInterrupt. Tim Peters <tim.peters@gmail.com> parents: 15873 diff changeset	259 if not gotit:
836cdf8d1245 SF bug [#410708] Condition.wait() and KeyboardInterrupt. Tim Peters <tim.peters@gmail.com> parents: 15873 diff changeset	260 if __debug__:
836cdf8d1245 SF bug [#410708] Condition.wait() and KeyboardInterrupt. Tim Peters <tim.peters@gmail.com> parents: 15873 diff changeset	261 self._note("%s.wait(%s): timed out", self, timeout)
836cdf8d1245 SF bug [#410708] Condition.wait() and KeyboardInterrupt. Tim Peters <tim.peters@gmail.com> parents: 15873 diff changeset	262 try:
836cdf8d1245 SF bug [#410708] Condition.wait() and KeyboardInterrupt. Tim Peters <tim.peters@gmail.com> parents: 15873 diff changeset	263 self.__waiters.remove(waiter)
836cdf8d1245 SF bug [#410708] Condition.wait() and KeyboardInterrupt. Tim Peters <tim.peters@gmail.com> parents: 15873 diff changeset	264 except ValueError:
836cdf8d1245 SF bug [#410708] Condition.wait() and KeyboardInterrupt. Tim Peters <tim.peters@gmail.com> parents: 15873 diff changeset	265 pass
836cdf8d1245 SF bug [#410708] Condition.wait() and KeyboardInterrupt. Tim Peters <tim.peters@gmail.com> parents: 15873 diff changeset	266 else:
836cdf8d1245 SF bug [#410708] Condition.wait() and KeyboardInterrupt. Tim Peters <tim.peters@gmail.com> parents: 15873 diff changeset	267 if __debug__:
836cdf8d1245 SF bug [#410708] Condition.wait() and KeyboardInterrupt. Tim Peters <tim.peters@gmail.com> parents: 15873 diff changeset	268 self._note("%s.wait(%s): got it", self, timeout)
836cdf8d1245 SF bug [#410708] Condition.wait() and KeyboardInterrupt. Tim Peters <tim.peters@gmail.com> parents: 15873 diff changeset	269 finally:
836cdf8d1245 SF bug [#410708] Condition.wait() and KeyboardInterrupt. Tim Peters <tim.peters@gmail.com> parents: 15873 diff changeset	270 self._acquire_restore(saved_state)
7949 58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	271
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	272 def notify(self, n=1):
41960 588686d4c2cf Patch #1731049: make threading.py use a proper "raise" when checking internal state, rather than assert statements (which get stripped out by -O). Collin Winter <collinw@gmail.com> parents: 40542 diff changeset	273 if not self._is_owned():
56511 03854732a6c2 #7125: fix typo. Georg Brandl <georg@python.org> parents: 52593 diff changeset	274 raise RuntimeError("cannot notify on un-acquired lock")
7949 58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	275 __waiters = self.__waiters
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	276 waiters = __waiters[:n]
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	277 if not waiters:
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	278 if __debug__:
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	279 self._note("%s.notify(): no waiters", self)
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	280 return
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	281 self._note("%s.notify(): notifying %d waiter%s", self, n,
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	282 n!=1 and "s" or "")
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	283 for waiter in waiters:
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	284 waiter.release()
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	285 try:
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	286 __waiters.remove(waiter)
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	287 except ValueError:
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	288 pass
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	289
48942 bc585b4d4606 remove py3k warnings about the threading api; update docs Benjamin Peterson <benjamin@python.org> parents: 48830 diff changeset	290 def notifyAll(self):
7949 58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	291 self.notify(len(self.__waiters))
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	292
48942 bc585b4d4606 remove py3k warnings about the threading api; update docs Benjamin Peterson <benjamin@python.org> parents: 48830 diff changeset	293 notify_all = notifyAll
47601 8dc4312a2f75 add aliases to threading module Benjamin Peterson <benjamin@python.org> parents: 47598 diff changeset	294
7949 58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	295
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	296 def Semaphore(args, *kwargs):
28089 14f65d661084 Get rid of many apply() calls. Guido van Rossum <guido@python.org> parents: 26905 diff changeset	297 return _Semaphore(args, *kwargs)
7949 58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	298
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	299 class _Semaphore(_Verbose):
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	300
11876 c27d3e8c45c4 Fix a typo in a comment Andrew M. Kuchling <amk@amk.ca> parents: 11707 diff changeset	301 # After Tim Peters' semaphore class, but not quite the same (no maximum)
7949 58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	302
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	303 def __init__(self, value=1, verbose=None):
41960 588686d4c2cf Patch #1731049: make threading.py use a proper "raise" when checking internal state, rather than assert statements (which get stripped out by -O). Collin Winter <collinw@gmail.com> parents: 40542 diff changeset	304 if value < 0:
588686d4c2cf Patch #1731049: make threading.py use a proper "raise" when checking internal state, rather than assert statements (which get stripped out by -O). Collin Winter <collinw@gmail.com> parents: 40542 diff changeset	305 raise ValueError("semaphore initial value must be >= 0")
7949 58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	306 _Verbose.__init__(self, verbose)
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	307 self.__cond = Condition(Lock())
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	308 self.__value = value
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	309
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	310 def acquire(self, blocking=1):
22867 e2f2187c3d2c Partial introduction of bools where appropriate. Guido van Rossum <guido@python.org> parents: 22830 diff changeset	311 rc = False
7949 58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	312 self.__cond.acquire()
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	313 while self.__value == 0:
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	314 if not blocking:
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	315 break
19377 6386f01f2401 add debug calls to self._note for the Semaphore class. This closes bug Skip Montanaro <skip@pobox.com> parents: 19210 diff changeset	316 if __debug__:
6386f01f2401 add debug calls to self._note for the Semaphore class. This closes bug Skip Montanaro <skip@pobox.com> parents: 19210 diff changeset	317 self._note("%s.acquire(%s): blocked waiting, value=%s",
6386f01f2401 add debug calls to self._note for the Semaphore class. This closes bug Skip Montanaro <skip@pobox.com> parents: 19210 diff changeset	318 self, blocking, self.__value)
7949 58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	319 self.__cond.wait()
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	320 else:
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	321 self.__value = self.__value - 1
19377 6386f01f2401 add debug calls to self._note for the Semaphore class. This closes bug Skip Montanaro <skip@pobox.com> parents: 19210 diff changeset	322 if __debug__:
19379 2a083e050617 of course I muffed it separating the notes code from the initial_value Skip Montanaro <skip@pobox.com> parents: 19377 diff changeset	323 self._note("%s.acquire: success, value=%s",
2a083e050617 of course I muffed it separating the notes code from the initial_value Skip Montanaro <skip@pobox.com> parents: 19377 diff changeset	324 self, self.__value)
22867 e2f2187c3d2c Partial introduction of bools where appropriate. Guido van Rossum <guido@python.org> parents: 22830 diff changeset	325 rc = True
7949 58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	326 self.__cond.release()
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	327 return rc
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	328
36737 fa92fe15251a Updates to the with-statement: Guido van Rossum <guido@python.org> parents: 35932 diff changeset	329 __enter__ = acquire
fa92fe15251a Updates to the with-statement: Guido van Rossum <guido@python.org> parents: 35932 diff changeset	330
7949 58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	331 def release(self):
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	332 self.__cond.acquire()
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	333 self.__value = self.__value + 1
19377 6386f01f2401 add debug calls to self._note for the Semaphore class. This closes bug Skip Montanaro <skip@pobox.com> parents: 19210 diff changeset	334 if __debug__:
19379 2a083e050617 of course I muffed it separating the notes code from the initial_value Skip Montanaro <skip@pobox.com> parents: 19377 diff changeset	335 self._note("%s.release: success, value=%s",
2a083e050617 of course I muffed it separating the notes code from the initial_value Skip Montanaro <skip@pobox.com> parents: 19377 diff changeset	336 self, self.__value)
7949 58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	337 self.__cond.notify()
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	338 self.__cond.release()
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	339
36737 fa92fe15251a Updates to the with-statement: Guido van Rossum <guido@python.org> parents: 35932 diff changeset	340 def __exit__(self, t, v, tb):
fa92fe15251a Updates to the with-statement: Guido van Rossum <guido@python.org> parents: 35932 diff changeset	341 self.release()
fa92fe15251a Updates to the with-statement: Guido van Rossum <guido@python.org> parents: 35932 diff changeset	342
7949 58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	343
19404 6125d9f92441 Added new BoundedSemaphore class. Closes bug 452836. Skip Montanaro <skip@pobox.com> parents: 19379 diff changeset	344 def BoundedSemaphore(args, *kwargs):
28089 14f65d661084 Get rid of many apply() calls. Guido van Rossum <guido@python.org> parents: 26905 diff changeset	345 return _BoundedSemaphore(args, *kwargs)
19404 6125d9f92441 Added new BoundedSemaphore class. Closes bug 452836. Skip Montanaro <skip@pobox.com> parents: 19379 diff changeset	346
6125d9f92441 Added new BoundedSemaphore class. Closes bug 452836. Skip Montanaro <skip@pobox.com> parents: 19379 diff changeset	347 class _BoundedSemaphore(_Semaphore):
6125d9f92441 Added new BoundedSemaphore class. Closes bug 452836. Skip Montanaro <skip@pobox.com> parents: 19379 diff changeset	348 """Semaphore that checks that # releases is <= # acquires"""
6125d9f92441 Added new BoundedSemaphore class. Closes bug 452836. Skip Montanaro <skip@pobox.com> parents: 19379 diff changeset	349 def __init__(self, value=1, verbose=None):
6125d9f92441 Added new BoundedSemaphore class. Closes bug 452836. Skip Montanaro <skip@pobox.com> parents: 19379 diff changeset	350 _Semaphore.__init__(self, value, verbose)
6125d9f92441 Added new BoundedSemaphore class. Closes bug 452836. Skip Montanaro <skip@pobox.com> parents: 19379 diff changeset	351 self._initial_value = value
6125d9f92441 Added new BoundedSemaphore class. Closes bug 452836. Skip Montanaro <skip@pobox.com> parents: 19379 diff changeset	352
6125d9f92441 Added new BoundedSemaphore class. Closes bug 452836. Skip Montanaro <skip@pobox.com> parents: 19379 diff changeset	353 def release(self):
6125d9f92441 Added new BoundedSemaphore class. Closes bug 452836. Skip Montanaro <skip@pobox.com> parents: 19379 diff changeset	354 if self._Semaphore__value >= self._initial_value:
6125d9f92441 Added new BoundedSemaphore class. Closes bug 452836. Skip Montanaro <skip@pobox.com> parents: 19379 diff changeset	355 raise ValueError, "Semaphore released too many times"
6125d9f92441 Added new BoundedSemaphore class. Closes bug 452836. Skip Montanaro <skip@pobox.com> parents: 19379 diff changeset	356 return _Semaphore.release(self)
6125d9f92441 Added new BoundedSemaphore class. Closes bug 452836. Skip Montanaro <skip@pobox.com> parents: 19379 diff changeset	357
6125d9f92441 Added new BoundedSemaphore class. Closes bug 452836. Skip Montanaro <skip@pobox.com> parents: 19379 diff changeset	358
7949 58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	359 def Event(args, *kwargs):
28089 14f65d661084 Get rid of many apply() calls. Guido van Rossum <guido@python.org> parents: 26905 diff changeset	360 return _Event(args, *kwargs)
7949 58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	361
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	362 class _Event(_Verbose):
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	363
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	364 # After Tim Peters' event class (without is_posted())
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	365
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	366 def __init__(self, verbose=None):
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	367 _Verbose.__init__(self, verbose)
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	368 self.__cond = Condition(Lock())
22867 e2f2187c3d2c Partial introduction of bools where appropriate. Guido van Rossum <guido@python.org> parents: 22830 diff changeset	369 self.__flag = False
7949 58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	370
48942 bc585b4d4606 remove py3k warnings about the threading api; update docs Benjamin Peterson <benjamin@python.org> parents: 48830 diff changeset	371 def isSet(self):
7949 58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	372 return self.__flag
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	373
48942 bc585b4d4606 remove py3k warnings about the threading api; update docs Benjamin Peterson <benjamin@python.org> parents: 48830 diff changeset	374 is_set = isSet
47601 8dc4312a2f75 add aliases to threading module Benjamin Peterson <benjamin@python.org> parents: 47598 diff changeset	375
7949 58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	376 def set(self):
44918 685e96d20881 Revert 60189 and restore performance. Raymond Hettinger <python@rcn.com> parents: 44870 diff changeset	377 self.__cond.acquire()
685e96d20881 Revert 60189 and restore performance. Raymond Hettinger <python@rcn.com> parents: 44870 diff changeset	378 try:
26326 2b0e815c0b30 The _Event class should be more careful with releasing its lock when Guido van Rossum <guido@python.org> parents: 24833 diff changeset	379 self.__flag = True
47598 c349f9fbc704 give the threading API PEP 8 names Benjamin Peterson <benjamin@python.org> parents: 47438 diff changeset	380 self.__cond.notify_all()
44918 685e96d20881 Revert 60189 and restore performance. Raymond Hettinger <python@rcn.com> parents: 44870 diff changeset	381 finally:
685e96d20881 Revert 60189 and restore performance. Raymond Hettinger <python@rcn.com> parents: 44870 diff changeset	382 self.__cond.release()
7949 58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	383
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	384 def clear(self):
44918 685e96d20881 Revert 60189 and restore performance. Raymond Hettinger <python@rcn.com> parents: 44870 diff changeset	385 self.__cond.acquire()
685e96d20881 Revert 60189 and restore performance. Raymond Hettinger <python@rcn.com> parents: 44870 diff changeset	386 try:
26326 2b0e815c0b30 The _Event class should be more careful with releasing its lock when Guido van Rossum <guido@python.org> parents: 24833 diff changeset	387 self.__flag = False
44918 685e96d20881 Revert 60189 and restore performance. Raymond Hettinger <python@rcn.com> parents: 44870 diff changeset	388 finally:
685e96d20881 Revert 60189 and restore performance. Raymond Hettinger <python@rcn.com> parents: 44870 diff changeset	389 self.__cond.release()
7949 58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	390
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	391 def wait(self, timeout=None):
44918 685e96d20881 Revert 60189 and restore performance. Raymond Hettinger <python@rcn.com> parents: 44870 diff changeset	392 self.__cond.acquire()
685e96d20881 Revert 60189 and restore performance. Raymond Hettinger <python@rcn.com> parents: 44870 diff changeset	393 try:
26326 2b0e815c0b30 The _Event class should be more careful with releasing its lock when Guido van Rossum <guido@python.org> parents: 24833 diff changeset	394 if not self.__flag:
2b0e815c0b30 The _Event class should be more careful with releasing its lock when Guido van Rossum <guido@python.org> parents: 24833 diff changeset	395 self.__cond.wait(timeout)
52579 b5aa8aa78c0f #1674032: return value of flag from Event.wait(). OKed by Guido. Georg Brandl <georg@python.org> parents: 49059 diff changeset	396 return self.__flag
44918 685e96d20881 Revert 60189 and restore performance. Raymond Hettinger <python@rcn.com> parents: 44870 diff changeset	397 finally:
685e96d20881 Revert 60189 and restore performance. Raymond Hettinger <python@rcn.com> parents: 44870 diff changeset	398 self.__cond.release()
7949 58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	399
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	400 # Helper to generate new thread names
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	401 _counter = 0
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	402 def _newname(template="Thread-%d"):
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	403 global _counter
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	404 _counter = _counter + 1
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	405 return template % _counter
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	406
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	407 # Active thread administration
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	408 _active_limbo_lock = _allocate_lock()
34363 35f31790c6f9 threading._DummyThread.__init__(): document obscure new code. Tim Peters <tim.peters@gmail.com> parents: 34361 diff changeset	409 _active = {} # maps thread id to Thread object
7949 58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	410 _limbo = {}
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	411
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	412
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	413 # Main class for threads
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	414
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	415 class Thread(_Verbose):
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	416
22867 e2f2187c3d2c Partial introduction of bools where appropriate. Guido van Rossum <guido@python.org> parents: 22830 diff changeset	417 __initialized = False
32475 796ccb9082ef threading.Thread objects will now print a traceback for an exception raised Brett Cannon <bcannon@gmail.com> parents: 31629 diff changeset	418 # Need to store a reference to sys.exc_info for printing
796ccb9082ef threading.Thread objects will now print a traceback for an exception raised Brett Cannon <bcannon@gmail.com> parents: 31629 diff changeset	419 # out exceptions when a thread tries to use a global var. during interp.
796ccb9082ef threading.Thread objects will now print a traceback for an exception raised Brett Cannon <bcannon@gmail.com> parents: 31629 diff changeset	420 # shutdown and thus raises an exception about trying to perform some
796ccb9082ef threading.Thread objects will now print a traceback for an exception raised Brett Cannon <bcannon@gmail.com> parents: 31629 diff changeset	421 # operation on/with a NoneType
796ccb9082ef threading.Thread objects will now print a traceback for an exception raised Brett Cannon <bcannon@gmail.com> parents: 31629 diff changeset	422 __exc_info = _sys.exc_info
46146 10a39a662e69 Kill a race in test_threading in which the exception info in a thread finishing Jeffrey Yasskin <jyasskin@gmail.com> parents: 45545 diff changeset	423 # Keep sys.exc_clear too to clear the exception just before
10a39a662e69 Kill a race in test_threading in which the exception info in a thread finishing Jeffrey Yasskin <jyasskin@gmail.com> parents: 45545 diff changeset	424 # allowing .join() to return.
10a39a662e69 Kill a race in test_threading in which the exception info in a thread finishing Jeffrey Yasskin <jyasskin@gmail.com> parents: 45545 diff changeset	425 __exc_clear = _sys.exc_clear
7949 58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	426
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	427 def __init__(self, group=None, target=None, name=None,
35236 d0c6965b525e bug [ 1238170 ] threading.Thread uses {} as default argument Georg Brandl <georg@python.org> parents: 34512 diff changeset	428 args=(), kwargs=None, verbose=None):
8474 049aa3a8a172 Get rid of tabnanny's last complaints. Guido van Rossum <guido@python.org> parents: 8454 diff changeset	429 assert group is None, "group argument must be None for now"
7949 58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	430 _Verbose.__init__(self, verbose)
35236 d0c6965b525e bug [ 1238170 ] threading.Thread uses {} as default argument Georg Brandl <georg@python.org> parents: 34512 diff changeset	431 if kwargs is None:
d0c6965b525e bug [ 1238170 ] threading.Thread uses {} as default argument Georg Brandl <georg@python.org> parents: 34512 diff changeset	432 kwargs = {}
7949 58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	433 self.__target = target
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	434 self.__name = str(name or _newname())
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	435 self.__args = args
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	436 self.__kwargs = kwargs
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	437 self.__daemonic = self._set_daemon()
47438 7eaaad09b6cd Adds a Thread.getIdent() method to provide the _get_ident() value for Gregory P. Smith <greg@mad-scientist.com> parents: 46280 diff changeset	438 self.__ident = None
45545 3e435a211356 Thread.start() used sleep(0.000001) to make sure it didn't return before the Jeffrey Yasskin <jyasskin@gmail.com> parents: 45478 diff changeset	439 self.__started = Event()
22867 e2f2187c3d2c Partial introduction of bools where appropriate. Guido van Rossum <guido@python.org> parents: 22830 diff changeset	440 self.__stopped = False
7949 58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	441 self.__block = Condition(Lock())
22867 e2f2187c3d2c Partial introduction of bools where appropriate. Guido van Rossum <guido@python.org> parents: 22830 diff changeset	442 self.__initialized = True
32475 796ccb9082ef threading.Thread objects will now print a traceback for an exception raised Brett Cannon <bcannon@gmail.com> parents: 31629 diff changeset	443 # sys.stderr is not stored in the class like
796ccb9082ef threading.Thread objects will now print a traceback for an exception raised Brett Cannon <bcannon@gmail.com> parents: 31629 diff changeset	444 # sys.exc_info since it can be changed between instances
796ccb9082ef threading.Thread objects will now print a traceback for an exception raised Brett Cannon <bcannon@gmail.com> parents: 31629 diff changeset	445 self.__stderr = _sys.stderr
7949 58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	446
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	447 def _set_daemon(self):
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	448 # Overridden in _MainThread and _DummyThread
48288 e143a8f35241 backport threading property changes Benjamin Peterson <benjamin@python.org> parents: 48287 diff changeset	449 return current_thread().daemon
7949 58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	450
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	451 def __repr__(self):
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	452 assert self.__initialized, "Thread.__init__() was not called"
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	453 status = "initial"
47598 c349f9fbc704 give the threading API PEP 8 names Benjamin Peterson <benjamin@python.org> parents: 47438 diff changeset	454 if self.__started.is_set():
7949 58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	455 status = "started"
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	456 if self.__stopped:
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	457 status = "stopped"
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	458 if self.__daemonic:
47438 7eaaad09b6cd Adds a Thread.getIdent() method to provide the _get_ident() value for Gregory P. Smith <greg@mad-scientist.com> parents: 46280 diff changeset	459 status += " daemon"
7eaaad09b6cd Adds a Thread.getIdent() method to provide the _get_ident() value for Gregory P. Smith <greg@mad-scientist.com> parents: 46280 diff changeset	460 if self.__ident is not None:
7eaaad09b6cd Adds a Thread.getIdent() method to provide the _get_ident() value for Gregory P. Smith <greg@mad-scientist.com> parents: 46280 diff changeset	461 status += " %s" % self.__ident
7949 58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	462 return "<%s(%s, %s)>" % (self.__class__.__name__, self.__name, status)
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	463
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	464 def start(self):
41960 588686d4c2cf Patch #1731049: make threading.py use a proper "raise" when checking internal state, rather than assert statements (which get stripped out by -O). Collin Winter <collinw@gmail.com> parents: 40542 diff changeset	465 if not self.__initialized:
588686d4c2cf Patch #1731049: make threading.py use a proper "raise" when checking internal state, rather than assert statements (which get stripped out by -O). Collin Winter <collinw@gmail.com> parents: 40542 diff changeset	466 raise RuntimeError("thread.__init__() not called")
47598 c349f9fbc704 give the threading API PEP 8 names Benjamin Peterson <benjamin@python.org> parents: 47438 diff changeset	467 if self.__started.is_set():
41960 588686d4c2cf Patch #1731049: make threading.py use a proper "raise" when checking internal state, rather than assert statements (which get stripped out by -O). Collin Winter <collinw@gmail.com> parents: 40542 diff changeset	468 raise RuntimeError("thread already started")
7949 58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	469 if __debug__:
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	470 self._note("%s.start(): starting thread", self)
52590 5744468e609b take the usual lock precautions around _active_limbo_lock Benjamin Peterson <benjamin@python.org> parents: 52579 diff changeset	471 with _active_limbo_lock:
5744468e609b take the usual lock precautions around _active_limbo_lock Benjamin Peterson <benjamin@python.org> parents: 52579 diff changeset	472 _limbo[self] = self
7949 58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	473 _start_new_thread(self.__bootstrap, ())
45545 3e435a211356 Thread.start() used sleep(0.000001) to make sure it didn't return before the Jeffrey Yasskin <jyasskin@gmail.com> parents: 45478 diff changeset	474 self.__started.wait()
7949 58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	475
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	476 def run(self):
45478 9f183ae3458b Followup to r61011: Also avoid the reference cycle when the Thread's target Jeffrey Yasskin <jyasskin@gmail.com> parents: 45477 diff changeset	477 try:
9f183ae3458b Followup to r61011: Also avoid the reference cycle when the Thread's target Jeffrey Yasskin <jyasskin@gmail.com> parents: 45477 diff changeset	478 if self.__target:
9f183ae3458b Followup to r61011: Also avoid the reference cycle when the Thread's target Jeffrey Yasskin <jyasskin@gmail.com> parents: 45477 diff changeset	479 self.__target(self.__args, *self.__kwargs)
9f183ae3458b Followup to r61011: Also avoid the reference cycle when the Thread's target Jeffrey Yasskin <jyasskin@gmail.com> parents: 45477 diff changeset	480 finally:
9f183ae3458b Followup to r61011: Also avoid the reference cycle when the Thread's target Jeffrey Yasskin <jyasskin@gmail.com> parents: 45477 diff changeset	481 # Avoid a refcycle if the thread is running a function with
9f183ae3458b Followup to r61011: Also avoid the reference cycle when the Thread's target Jeffrey Yasskin <jyasskin@gmail.com> parents: 45477 diff changeset	482 # an argument that has a member that points to the thread.
9f183ae3458b Followup to r61011: Also avoid the reference cycle when the Thread's target Jeffrey Yasskin <jyasskin@gmail.com> parents: 45477 diff changeset	483 del self.__target, self.__args, self.__kwargs
7949 58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	484
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	485 def __bootstrap(self):
42677 0f50e091a36f Add a hack (originally devised in a slightly different form by Thomas Wouters) Guido van Rossum <guido@python.org> parents: 42410 diff changeset	486 # Wrapper around the real bootstrap code that ignores
0f50e091a36f Add a hack (originally devised in a slightly different form by Thomas Wouters) Guido van Rossum <guido@python.org> parents: 42410 diff changeset	487 # exceptions during interpreter cleanup. Those typically
0f50e091a36f Add a hack (originally devised in a slightly different form by Thomas Wouters) Guido van Rossum <guido@python.org> parents: 42410 diff changeset	488 # happen when a daemon thread wakes up at an unfortunate
0f50e091a36f Add a hack (originally devised in a slightly different form by Thomas Wouters) Guido van Rossum <guido@python.org> parents: 42410 diff changeset	489 # moment, finds the world around it destroyed, and raises some
0f50e091a36f Add a hack (originally devised in a slightly different form by Thomas Wouters) Guido van Rossum <guido@python.org> parents: 42410 diff changeset	490 # random exception *** while trying to report the exception in
0f50e091a36f Add a hack (originally devised in a slightly different form by Thomas Wouters) Guido van Rossum <guido@python.org> parents: 42410 diff changeset	491 # __bootstrap_inner() below ***. Those random exceptions
0f50e091a36f Add a hack (originally devised in a slightly different form by Thomas Wouters) Guido van Rossum <guido@python.org> parents: 42410 diff changeset	492 # don't help anybody, and they confuse users, so we suppress
0f50e091a36f Add a hack (originally devised in a slightly different form by Thomas Wouters) Guido van Rossum <guido@python.org> parents: 42410 diff changeset	493 # them. We suppress them only when it appears that the world
0f50e091a36f Add a hack (originally devised in a slightly different form by Thomas Wouters) Guido van Rossum <guido@python.org> parents: 42410 diff changeset	494 # indeed has already been destroyed, so that exceptions in
0f50e091a36f Add a hack (originally devised in a slightly different form by Thomas Wouters) Guido van Rossum <guido@python.org> parents: 42410 diff changeset	495 # __bootstrap_inner() during normal business hours are properly
0f50e091a36f Add a hack (originally devised in a slightly different form by Thomas Wouters) Guido van Rossum <guido@python.org> parents: 42410 diff changeset	496 # reported. Also, we only suppress them for daemonic threads;
0f50e091a36f Add a hack (originally devised in a slightly different form by Thomas Wouters) Guido van Rossum <guido@python.org> parents: 42410 diff changeset	497 # if a non-daemonic encounters this, something else is wrong.
0f50e091a36f Add a hack (originally devised in a slightly different form by Thomas Wouters) Guido van Rossum <guido@python.org> parents: 42410 diff changeset	498 try:
0f50e091a36f Add a hack (originally devised in a slightly different form by Thomas Wouters) Guido van Rossum <guido@python.org> parents: 42410 diff changeset	499 self.__bootstrap_inner()
0f50e091a36f Add a hack (originally devised in a slightly different form by Thomas Wouters) Guido van Rossum <guido@python.org> parents: 42410 diff changeset	500 except:
0f50e091a36f Add a hack (originally devised in a slightly different form by Thomas Wouters) Guido van Rossum <guido@python.org> parents: 42410 diff changeset	501 if self.__daemonic and _sys is None:
0f50e091a36f Add a hack (originally devised in a slightly different form by Thomas Wouters) Guido van Rossum <guido@python.org> parents: 42410 diff changeset	502 return
0f50e091a36f Add a hack (originally devised in a slightly different form by Thomas Wouters) Guido van Rossum <guido@python.org> parents: 42410 diff changeset	503 raise
0f50e091a36f Add a hack (originally devised in a slightly different form by Thomas Wouters) Guido van Rossum <guido@python.org> parents: 42410 diff changeset	504
52593 587fcfbe08b6 fix Thread.ident when it is the main thread or a dummy thread #5632 Benjamin Peterson <benjamin@python.org> parents: 52590 diff changeset	505 def _set_ident(self):
587fcfbe08b6 fix Thread.ident when it is the main thread or a dummy thread #5632 Benjamin Peterson <benjamin@python.org> parents: 52590 diff changeset	506 self.__ident = _get_ident()
587fcfbe08b6 fix Thread.ident when it is the main thread or a dummy thread #5632 Benjamin Peterson <benjamin@python.org> parents: 52590 diff changeset	507
42677 0f50e091a36f Add a hack (originally devised in a slightly different form by Thomas Wouters) Guido van Rossum <guido@python.org> parents: 42410 diff changeset	508 def __bootstrap_inner(self):
7949 58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	509 try:
52593 587fcfbe08b6 fix Thread.ident when it is the main thread or a dummy thread #5632 Benjamin Peterson <benjamin@python.org> parents: 52590 diff changeset	510 self._set_ident()
45545 3e435a211356 Thread.start() used sleep(0.000001) to make sure it didn't return before the Jeffrey Yasskin <jyasskin@gmail.com> parents: 45478 diff changeset	511 self.__started.set()
52590 5744468e609b take the usual lock precautions around _active_limbo_lock Benjamin Peterson <benjamin@python.org> parents: 52579 diff changeset	512 with _active_limbo_lock:
5744468e609b take the usual lock precautions around _active_limbo_lock Benjamin Peterson <benjamin@python.org> parents: 52579 diff changeset	513 _active[self.__ident] = self
5744468e609b take the usual lock precautions around _active_limbo_lock Benjamin Peterson <benjamin@python.org> parents: 52579 diff changeset	514 del _limbo[self]
7949 58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	515 if __debug__:
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	516 self._note("%s.__bootstrap(): thread started", self)
29679 d0f15977f37f Add settrace() and setprofile() functions to the threading library. Jeremy Hylton <jeremy@alum.mit.edu> parents: 29676 diff changeset	517
d0f15977f37f Add settrace() and setprofile() functions to the threading library. Jeremy Hylton <jeremy@alum.mit.edu> parents: 29676 diff changeset	518 if _trace_hook:
d0f15977f37f Add settrace() and setprofile() functions to the threading library. Jeremy Hylton <jeremy@alum.mit.edu> parents: 29676 diff changeset	519 self._note("%s.__bootstrap(): registering trace hook", self)
d0f15977f37f Add settrace() and setprofile() functions to the threading library. Jeremy Hylton <jeremy@alum.mit.edu> parents: 29676 diff changeset	520 _sys.settrace(_trace_hook)
d0f15977f37f Add settrace() and setprofile() functions to the threading library. Jeremy Hylton <jeremy@alum.mit.edu> parents: 29676 diff changeset	521 if _profile_hook:
d0f15977f37f Add settrace() and setprofile() functions to the threading library. Jeremy Hylton <jeremy@alum.mit.edu> parents: 29676 diff changeset	522 self._note("%s.__bootstrap(): registering profile hook", self)
d0f15977f37f Add settrace() and setprofile() functions to the threading library. Jeremy Hylton <jeremy@alum.mit.edu> parents: 29676 diff changeset	523 _sys.setprofile(_profile_hook)
29686 371092ce5c2b Whitespace normalization. Tim Peters <tim.peters@gmail.com> parents: 29683 diff changeset	524
7949 58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	525 try:
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	526 self.run()
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	527 except SystemExit:
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	528 if __debug__:
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	529 self._note("%s.__bootstrap(): raised SystemExit", self)
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	530 except:
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	531 if __debug__:
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	532 self._note("%s.__bootstrap(): unhandled exception", self)
32475 796ccb9082ef threading.Thread objects will now print a traceback for an exception raised Brett Cannon <bcannon@gmail.com> parents: 31629 diff changeset	533 # If sys.stderr is no more (most likely from interpreter
796ccb9082ef threading.Thread objects will now print a traceback for an exception raised Brett Cannon <bcannon@gmail.com> parents: 31629 diff changeset	534 # shutdown) use self.__stderr. Otherwise still use sys (as in
796ccb9082ef threading.Thread objects will now print a traceback for an exception raised Brett Cannon <bcannon@gmail.com> parents: 31629 diff changeset	535 # _sys) in case sys.stderr was redefined since the creation of
796ccb9082ef threading.Thread objects will now print a traceback for an exception raised Brett Cannon <bcannon@gmail.com> parents: 31629 diff changeset	536 # self.
796ccb9082ef threading.Thread objects will now print a traceback for an exception raised Brett Cannon <bcannon@gmail.com> parents: 31629 diff changeset	537 if _sys:
796ccb9082ef threading.Thread objects will now print a traceback for an exception raised Brett Cannon <bcannon@gmail.com> parents: 31629 diff changeset	538 _sys.stderr.write("Exception in thread %s:\n%s\n" %
48830 f970a4f7560f fix a few get_name() calls and turn then to .name Benjamin Peterson <benjamin@python.org> parents: 48295 diff changeset	539 (self.name, _format_exc()))
32475 796ccb9082ef threading.Thread objects will now print a traceback for an exception raised Brett Cannon <bcannon@gmail.com> parents: 31629 diff changeset	540 else:
796ccb9082ef threading.Thread objects will now print a traceback for an exception raised Brett Cannon <bcannon@gmail.com> parents: 31629 diff changeset	541 # Do the best job possible w/o a huge amt. of code to
796ccb9082ef threading.Thread objects will now print a traceback for an exception raised Brett Cannon <bcannon@gmail.com> parents: 31629 diff changeset	542 # approximate a traceback (code ideas from
796ccb9082ef threading.Thread objects will now print a traceback for an exception raised Brett Cannon <bcannon@gmail.com> parents: 31629 diff changeset	543 # Lib/traceback.py)
796ccb9082ef threading.Thread objects will now print a traceback for an exception raised Brett Cannon <bcannon@gmail.com> parents: 31629 diff changeset	544 exc_type, exc_value, exc_tb = self.__exc_info()
796ccb9082ef threading.Thread objects will now print a traceback for an exception raised Brett Cannon <bcannon@gmail.com> parents: 31629 diff changeset	545 try:
796ccb9082ef threading.Thread objects will now print a traceback for an exception raised Brett Cannon <bcannon@gmail.com> parents: 31629 diff changeset	546 print>>self.__stderr, (
48830 f970a4f7560f fix a few get_name() calls and turn then to .name Benjamin Peterson <benjamin@python.org> parents: 48295 diff changeset	547 "Exception in thread " + self.name +
32475 796ccb9082ef threading.Thread objects will now print a traceback for an exception raised Brett Cannon <bcannon@gmail.com> parents: 31629 diff changeset	548 " (most likely raised during interpreter shutdown):")
796ccb9082ef threading.Thread objects will now print a traceback for an exception raised Brett Cannon <bcannon@gmail.com> parents: 31629 diff changeset	549 print>>self.__stderr, (
796ccb9082ef threading.Thread objects will now print a traceback for an exception raised Brett Cannon <bcannon@gmail.com> parents: 31629 diff changeset	550 "Traceback (most recent call last):")
796ccb9082ef threading.Thread objects will now print a traceback for an exception raised Brett Cannon <bcannon@gmail.com> parents: 31629 diff changeset	551 while exc_tb:
796ccb9082ef threading.Thread objects will now print a traceback for an exception raised Brett Cannon <bcannon@gmail.com> parents: 31629 diff changeset	552 print>>self.__stderr, (
796ccb9082ef threading.Thread objects will now print a traceback for an exception raised Brett Cannon <bcannon@gmail.com> parents: 31629 diff changeset	553 ' File "%s", line %s, in %s' %
796ccb9082ef threading.Thread objects will now print a traceback for an exception raised Brett Cannon <bcannon@gmail.com> parents: 31629 diff changeset	554 (exc_tb.tb_frame.f_code.co_filename,
796ccb9082ef threading.Thread objects will now print a traceback for an exception raised Brett Cannon <bcannon@gmail.com> parents: 31629 diff changeset	555 exc_tb.tb_lineno,
796ccb9082ef threading.Thread objects will now print a traceback for an exception raised Brett Cannon <bcannon@gmail.com> parents: 31629 diff changeset	556 exc_tb.tb_frame.f_code.co_name))
796ccb9082ef threading.Thread objects will now print a traceback for an exception raised Brett Cannon <bcannon@gmail.com> parents: 31629 diff changeset	557 exc_tb = exc_tb.tb_next
796ccb9082ef threading.Thread objects will now print a traceback for an exception raised Brett Cannon <bcannon@gmail.com> parents: 31629 diff changeset	558 print>>self.__stderr, ("%s: %s" % (exc_type, exc_value))
796ccb9082ef threading.Thread objects will now print a traceback for an exception raised Brett Cannon <bcannon@gmail.com> parents: 31629 diff changeset	559 # Make sure that exc_tb gets deleted since it is a memory
796ccb9082ef threading.Thread objects will now print a traceback for an exception raised Brett Cannon <bcannon@gmail.com> parents: 31629 diff changeset	560 # hog; deleting everything else is just for thoroughness
796ccb9082ef threading.Thread objects will now print a traceback for an exception raised Brett Cannon <bcannon@gmail.com> parents: 31629 diff changeset	561 finally:
796ccb9082ef threading.Thread objects will now print a traceback for an exception raised Brett Cannon <bcannon@gmail.com> parents: 31629 diff changeset	562 del exc_type, exc_value, exc_tb
7949 58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	563 else:
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	564 if __debug__:
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	565 self._note("%s.__bootstrap(): normal return", self)
46146 10a39a662e69 Kill a race in test_threading in which the exception info in a thread finishing Jeffrey Yasskin <jyasskin@gmail.com> parents: 45545 diff changeset	566 finally:
10a39a662e69 Kill a race in test_threading in which the exception info in a thread finishing Jeffrey Yasskin <jyasskin@gmail.com> parents: 45545 diff changeset	567 # Prevent a race in
10a39a662e69 Kill a race in test_threading in which the exception info in a thread finishing Jeffrey Yasskin <jyasskin@gmail.com> parents: 45545 diff changeset	568 # test_threading.test_no_refcycle_through_target when
10a39a662e69 Kill a race in test_threading in which the exception info in a thread finishing Jeffrey Yasskin <jyasskin@gmail.com> parents: 45545 diff changeset	569 # the exception keeps the target alive past when we
10a39a662e69 Kill a race in test_threading in which the exception info in a thread finishing Jeffrey Yasskin <jyasskin@gmail.com> parents: 45545 diff changeset	570 # assert that it's dead.
46182 fe53d1a36ef6 Revert my experiment. I found one reason of failures in test_logging. Amaury Forgeot d'Arc <amauryfa@gmail.com> parents: 46179 diff changeset	571 self.__exc_clear()
7949 58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	572 finally:
44870 fe7d423474de - Fix Issue #1703448: A joined thread could show up in the Gregory P. Smith <greg@mad-scientist.com> parents: 44869 diff changeset	573 with _active_limbo_lock:
fe7d423474de - Fix Issue #1703448: A joined thread could show up in the Gregory P. Smith <greg@mad-scientist.com> parents: 44869 diff changeset	574 self.__stop()
fe7d423474de - Fix Issue #1703448: A joined thread could show up in the Gregory P. Smith <greg@mad-scientist.com> parents: 44869 diff changeset	575 try:
fe7d423474de - Fix Issue #1703448: A joined thread could show up in the Gregory P. Smith <greg@mad-scientist.com> parents: 44869 diff changeset	576 # We don't call self.__delete() because it also
fe7d423474de - Fix Issue #1703448: A joined thread could show up in the Gregory P. Smith <greg@mad-scientist.com> parents: 44869 diff changeset	577 # grabs _active_limbo_lock.
fe7d423474de - Fix Issue #1703448: A joined thread could show up in the Gregory P. Smith <greg@mad-scientist.com> parents: 44869 diff changeset	578 del _active[_get_ident()]
fe7d423474de - Fix Issue #1703448: A joined thread could show up in the Gregory P. Smith <greg@mad-scientist.com> parents: 44869 diff changeset	579 except:
fe7d423474de - Fix Issue #1703448: A joined thread could show up in the Gregory P. Smith <greg@mad-scientist.com> parents: 44869 diff changeset	580 pass
7949 58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	581
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	582 def __stop(self):
44918 685e96d20881 Revert 60189 and restore performance. Raymond Hettinger <python@rcn.com> parents: 44870 diff changeset	583 self.__block.acquire()
685e96d20881 Revert 60189 and restore performance. Raymond Hettinger <python@rcn.com> parents: 44870 diff changeset	584 self.__stopped = True
47598 c349f9fbc704 give the threading API PEP 8 names Benjamin Peterson <benjamin@python.org> parents: 47438 diff changeset	585 self.__block.notify_all()
44918 685e96d20881 Revert 60189 and restore performance. Raymond Hettinger <python@rcn.com> parents: 44870 diff changeset	586 self.__block.release()
7949 58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	587
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	588 def __delete(self):
32778 7af695bc5480 Thread.__delete: Discussion of internal obscurities belongs in comments Tim Peters <tim.peters@gmail.com> parents: 32774 diff changeset	589 "Remove current thread from the dict of currently running threads."
32774 8a91cd7d7e82 Fix bug where a KeyError was raised if -O was being used for the interpreter Brett Cannon <bcannon@gmail.com> parents: 32673 diff changeset	590
32778 7af695bc5480 Thread.__delete: Discussion of internal obscurities belongs in comments Tim Peters <tim.peters@gmail.com> parents: 32774 diff changeset	591 # Notes about running with dummy_thread:
7af695bc5480 Thread.__delete: Discussion of internal obscurities belongs in comments Tim Peters <tim.peters@gmail.com> parents: 32774 diff changeset	592 #
7af695bc5480 Thread.__delete: Discussion of internal obscurities belongs in comments Tim Peters <tim.peters@gmail.com> parents: 32774 diff changeset	593 # Must take care to not raise an exception if dummy_thread is being
7af695bc5480 Thread.__delete: Discussion of internal obscurities belongs in comments Tim Peters <tim.peters@gmail.com> parents: 32774 diff changeset	594 # used (and thus this module is being used as an instance of
7af695bc5480 Thread.__delete: Discussion of internal obscurities belongs in comments Tim Peters <tim.peters@gmail.com> parents: 32774 diff changeset	595 # dummy_threading). dummy_thread.get_ident() always returns -1 since
7af695bc5480 Thread.__delete: Discussion of internal obscurities belongs in comments Tim Peters <tim.peters@gmail.com> parents: 32774 diff changeset	596 # there is only one thread if dummy_thread is being used. Thus
7af695bc5480 Thread.__delete: Discussion of internal obscurities belongs in comments Tim Peters <tim.peters@gmail.com> parents: 32774 diff changeset	597 # len(_active) is always <= 1 here, and any Thread instance created
7af695bc5480 Thread.__delete: Discussion of internal obscurities belongs in comments Tim Peters <tim.peters@gmail.com> parents: 32774 diff changeset	598 # overwrites the (if any) thread currently registered in _active.
7af695bc5480 Thread.__delete: Discussion of internal obscurities belongs in comments Tim Peters <tim.peters@gmail.com> parents: 32774 diff changeset	599 #
7af695bc5480 Thread.__delete: Discussion of internal obscurities belongs in comments Tim Peters <tim.peters@gmail.com> parents: 32774 diff changeset	600 # An instance of _MainThread is always created by 'threading'. This
7af695bc5480 Thread.__delete: Discussion of internal obscurities belongs in comments Tim Peters <tim.peters@gmail.com> parents: 32774 diff changeset	601 # gets overwritten the instant an instance of Thread is created; both
7af695bc5480 Thread.__delete: Discussion of internal obscurities belongs in comments Tim Peters <tim.peters@gmail.com> parents: 32774 diff changeset	602 # threads return -1 from dummy_thread.get_ident() and thus have the
7af695bc5480 Thread.__delete: Discussion of internal obscurities belongs in comments Tim Peters <tim.peters@gmail.com> parents: 32774 diff changeset	603 # same key in the dict. So when the _MainThread instance created by
7af695bc5480 Thread.__delete: Discussion of internal obscurities belongs in comments Tim Peters <tim.peters@gmail.com> parents: 32774 diff changeset	604 # 'threading' tries to clean itself up when atexit calls this method
7af695bc5480 Thread.__delete: Discussion of internal obscurities belongs in comments Tim Peters <tim.peters@gmail.com> parents: 32774 diff changeset	605 # it gets a KeyError if another Thread instance was created.
7af695bc5480 Thread.__delete: Discussion of internal obscurities belongs in comments Tim Peters <tim.peters@gmail.com> parents: 32774 diff changeset	606 #
7af695bc5480 Thread.__delete: Discussion of internal obscurities belongs in comments Tim Peters <tim.peters@gmail.com> parents: 32774 diff changeset	607 # This all means that KeyError from trying to delete something from
7af695bc5480 Thread.__delete: Discussion of internal obscurities belongs in comments Tim Peters <tim.peters@gmail.com> parents: 32774 diff changeset	608 # _active if dummy_threading is being used is a red herring. But
7af695bc5480 Thread.__delete: Discussion of internal obscurities belongs in comments Tim Peters <tim.peters@gmail.com> parents: 32774 diff changeset	609 # since it isn't if dummy_threading is not being used then don't
7af695bc5480 Thread.__delete: Discussion of internal obscurities belongs in comments Tim Peters <tim.peters@gmail.com> parents: 32774 diff changeset	610 # hide the exception.
32774 8a91cd7d7e82 Fix bug where a KeyError was raised if -O was being used for the interpreter Brett Cannon <bcannon@gmail.com> parents: 32673 diff changeset	611
44918 685e96d20881 Revert 60189 and restore performance. Raymond Hettinger <python@rcn.com> parents: 44870 diff changeset	612 try:
46280 76f577a9ec03 #1733757: the interpreter would hang on shutdown, if the function set by sys.settrace Amaury Forgeot d'Arc <amauryfa@gmail.com> parents: 46220 diff changeset	613 with _active_limbo_lock:
32774 8a91cd7d7e82 Fix bug where a KeyError was raised if -O was being used for the interpreter Brett Cannon <bcannon@gmail.com> parents: 32673 diff changeset	614 del _active[_get_ident()]
46280 76f577a9ec03 #1733757: the interpreter would hang on shutdown, if the function set by sys.settrace Amaury Forgeot d'Arc <amauryfa@gmail.com> parents: 46220 diff changeset	615 # There must not be any python code between the previous line
76f577a9ec03 #1733757: the interpreter would hang on shutdown, if the function set by sys.settrace Amaury Forgeot d'Arc <amauryfa@gmail.com> parents: 46220 diff changeset	616 # and after the lock is released. Otherwise a tracing function
76f577a9ec03 #1733757: the interpreter would hang on shutdown, if the function set by sys.settrace Amaury Forgeot d'Arc <amauryfa@gmail.com> parents: 46220 diff changeset	617 # could try to acquire the lock again in the same thread, (in
47598 c349f9fbc704 give the threading API PEP 8 names Benjamin Peterson <benjamin@python.org> parents: 47438 diff changeset	618 # current_thread()), and would block.
46280 76f577a9ec03 #1733757: the interpreter would hang on shutdown, if the function set by sys.settrace Amaury Forgeot d'Arc <amauryfa@gmail.com> parents: 46220 diff changeset	619 except KeyError:
76f577a9ec03 #1733757: the interpreter would hang on shutdown, if the function set by sys.settrace Amaury Forgeot d'Arc <amauryfa@gmail.com> parents: 46220 diff changeset	620 if 'dummy_threading' not in _sys.modules:
76f577a9ec03 #1733757: the interpreter would hang on shutdown, if the function set by sys.settrace Amaury Forgeot d'Arc <amauryfa@gmail.com> parents: 46220 diff changeset	621 raise
7949 58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	622
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	623 def join(self, timeout=None):
41960 588686d4c2cf Patch #1731049: make threading.py use a proper "raise" when checking internal state, rather than assert statements (which get stripped out by -O). Collin Winter <collinw@gmail.com> parents: 40542 diff changeset	624 if not self.__initialized:
588686d4c2cf Patch #1731049: make threading.py use a proper "raise" when checking internal state, rather than assert statements (which get stripped out by -O). Collin Winter <collinw@gmail.com> parents: 40542 diff changeset	625 raise RuntimeError("Thread.__init__() not called")
47598 c349f9fbc704 give the threading API PEP 8 names Benjamin Peterson <benjamin@python.org> parents: 47438 diff changeset	626 if not self.__started.is_set():
41960 588686d4c2cf Patch #1731049: make threading.py use a proper "raise" when checking internal state, rather than assert statements (which get stripped out by -O). Collin Winter <collinw@gmail.com> parents: 40542 diff changeset	627 raise RuntimeError("cannot join thread before it is started")
47598 c349f9fbc704 give the threading API PEP 8 names Benjamin Peterson <benjamin@python.org> parents: 47438 diff changeset	628 if self is current_thread():
41960 588686d4c2cf Patch #1731049: make threading.py use a proper "raise" when checking internal state, rather than assert statements (which get stripped out by -O). Collin Winter <collinw@gmail.com> parents: 40542 diff changeset	629 raise RuntimeError("cannot join current thread")
588686d4c2cf Patch #1731049: make threading.py use a proper "raise" when checking internal state, rather than assert statements (which get stripped out by -O). Collin Winter <collinw@gmail.com> parents: 40542 diff changeset	630
7949 58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	631 if __debug__:
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	632 if not self.__stopped:
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	633 self._note("%s.join(): waiting until thread stops", self)
44918 685e96d20881 Revert 60189 and restore performance. Raymond Hettinger <python@rcn.com> parents: 44870 diff changeset	634 self.__block.acquire()
685e96d20881 Revert 60189 and restore performance. Raymond Hettinger <python@rcn.com> parents: 44870 diff changeset	635 try:
35932 b7c6c461a808 Prevent threading.Thread.join() from blocking when a previous call raised an Brett Cannon <bcannon@gmail.com> parents: 35236 diff changeset	636 if timeout is None:
b7c6c461a808 Prevent threading.Thread.join() from blocking when a previous call raised an Brett Cannon <bcannon@gmail.com> parents: 35236 diff changeset	637 while not self.__stopped:
b7c6c461a808 Prevent threading.Thread.join() from blocking when a previous call raised an Brett Cannon <bcannon@gmail.com> parents: 35236 diff changeset	638 self.__block.wait()
7949 58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	639 if __debug__:
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	640 self._note("%s.join(): thread stopped", self)
35932 b7c6c461a808 Prevent threading.Thread.join() from blocking when a previous call raised an Brett Cannon <bcannon@gmail.com> parents: 35236 diff changeset	641 else:
b7c6c461a808 Prevent threading.Thread.join() from blocking when a previous call raised an Brett Cannon <bcannon@gmail.com> parents: 35236 diff changeset	642 deadline = _time() + timeout
b7c6c461a808 Prevent threading.Thread.join() from blocking when a previous call raised an Brett Cannon <bcannon@gmail.com> parents: 35236 diff changeset	643 while not self.__stopped:
b7c6c461a808 Prevent threading.Thread.join() from blocking when a previous call raised an Brett Cannon <bcannon@gmail.com> parents: 35236 diff changeset	644 delay = deadline - _time()
b7c6c461a808 Prevent threading.Thread.join() from blocking when a previous call raised an Brett Cannon <bcannon@gmail.com> parents: 35236 diff changeset	645 if delay <= 0:
b7c6c461a808 Prevent threading.Thread.join() from blocking when a previous call raised an Brett Cannon <bcannon@gmail.com> parents: 35236 diff changeset	646 if __debug__:
b7c6c461a808 Prevent threading.Thread.join() from blocking when a previous call raised an Brett Cannon <bcannon@gmail.com> parents: 35236 diff changeset	647 self._note("%s.join(): timed out", self)
b7c6c461a808 Prevent threading.Thread.join() from blocking when a previous call raised an Brett Cannon <bcannon@gmail.com> parents: 35236 diff changeset	648 break
b7c6c461a808 Prevent threading.Thread.join() from blocking when a previous call raised an Brett Cannon <bcannon@gmail.com> parents: 35236 diff changeset	649 self.__block.wait(delay)
b7c6c461a808 Prevent threading.Thread.join() from blocking when a previous call raised an Brett Cannon <bcannon@gmail.com> parents: 35236 diff changeset	650 else:
b7c6c461a808 Prevent threading.Thread.join() from blocking when a previous call raised an Brett Cannon <bcannon@gmail.com> parents: 35236 diff changeset	651 if __debug__:
b7c6c461a808 Prevent threading.Thread.join() from blocking when a previous call raised an Brett Cannon <bcannon@gmail.com> parents: 35236 diff changeset	652 self._note("%s.join(): thread stopped", self)
44918 685e96d20881 Revert 60189 and restore performance. Raymond Hettinger <python@rcn.com> parents: 44870 diff changeset	653 finally:
685e96d20881 Revert 60189 and restore performance. Raymond Hettinger <python@rcn.com> parents: 44870 diff changeset	654 self.__block.release()
7949 58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	655
48288 e143a8f35241 backport threading property changes Benjamin Peterson <benjamin@python.org> parents: 48287 diff changeset	656 @property
e143a8f35241 backport threading property changes Benjamin Peterson <benjamin@python.org> parents: 48287 diff changeset	657 def name(self):
7949 58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	658 assert self.__initialized, "Thread.__init__() not called"
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	659 return self.__name
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	660
48288 e143a8f35241 backport threading property changes Benjamin Peterson <benjamin@python.org> parents: 48287 diff changeset	661 @name.setter
e143a8f35241 backport threading property changes Benjamin Peterson <benjamin@python.org> parents: 48287 diff changeset	662 def name(self, name):
7949 58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	663 assert self.__initialized, "Thread.__init__() not called"
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	664 self.__name = str(name)
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	665
48287 1d29e53ce2af change threading.getIdent to a property Benjamin Peterson <benjamin@python.org> parents: 48131 diff changeset	666 @property
1d29e53ce2af change threading.getIdent to a property Benjamin Peterson <benjamin@python.org> parents: 48131 diff changeset	667 def ident(self):
47438 7eaaad09b6cd Adds a Thread.getIdent() method to provide the _get_ident() value for Gregory P. Smith <greg@mad-scientist.com> parents: 46280 diff changeset	668 assert self.__initialized, "Thread.__init__() not called"
7eaaad09b6cd Adds a Thread.getIdent() method to provide the _get_ident() value for Gregory P. Smith <greg@mad-scientist.com> parents: 46280 diff changeset	669 return self.__ident
7eaaad09b6cd Adds a Thread.getIdent() method to provide the _get_ident() value for Gregory P. Smith <greg@mad-scientist.com> parents: 46280 diff changeset	670
48942 bc585b4d4606 remove py3k warnings about the threading api; update docs Benjamin Peterson <benjamin@python.org> parents: 48830 diff changeset	671 def isAlive(self):
7949 58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	672 assert self.__initialized, "Thread.__init__() not called"
47598 c349f9fbc704 give the threading API PEP 8 names Benjamin Peterson <benjamin@python.org> parents: 47438 diff changeset	673 return self.__started.is_set() and not self.__stopped
15873 3dd217fbdd59 Whitespace normalization. Tim Peters <tim.peters@gmail.com> parents: 15586 diff changeset	674
48942 bc585b4d4606 remove py3k warnings about the threading api; update docs Benjamin Peterson <benjamin@python.org> parents: 48830 diff changeset	675 is_alive = isAlive
48295 5c105f9a78e8 add py3k warnings for old threading APIs Benjamin Peterson <benjamin@python.org> parents: 48290 diff changeset	676
48288 e143a8f35241 backport threading property changes Benjamin Peterson <benjamin@python.org> parents: 48287 diff changeset	677 @property
e143a8f35241 backport threading property changes Benjamin Peterson <benjamin@python.org> parents: 48287 diff changeset	678 def daemon(self):
7949 58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	679 assert self.__initialized, "Thread.__init__() not called"
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	680 return self.__daemonic
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	681
48288 e143a8f35241 backport threading property changes Benjamin Peterson <benjamin@python.org> parents: 48287 diff changeset	682 @daemon.setter
e143a8f35241 backport threading property changes Benjamin Peterson <benjamin@python.org> parents: 48287 diff changeset	683 def daemon(self, daemonic):
41960 588686d4c2cf Patch #1731049: make threading.py use a proper "raise" when checking internal state, rather than assert statements (which get stripped out by -O). Collin Winter <collinw@gmail.com> parents: 40542 diff changeset	684 if not self.__initialized:
588686d4c2cf Patch #1731049: make threading.py use a proper "raise" when checking internal state, rather than assert statements (which get stripped out by -O). Collin Winter <collinw@gmail.com> parents: 40542 diff changeset	685 raise RuntimeError("Thread.__init__() not called")
47598 c349f9fbc704 give the threading API PEP 8 names Benjamin Peterson <benjamin@python.org> parents: 47438 diff changeset	686 if self.__started.is_set():
41960 588686d4c2cf Patch #1731049: make threading.py use a proper "raise" when checking internal state, rather than assert statements (which get stripped out by -O). Collin Winter <collinw@gmail.com> parents: 40542 diff changeset	687 raise RuntimeError("cannot set daemon status of active thread");
7949 58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	688 self.__daemonic = daemonic
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	689
48290 9d1856aba9f2 bring back the old API Benjamin Peterson <benjamin@python.org> parents: 48288 diff changeset	690 def isDaemon(self):
9d1856aba9f2 bring back the old API Benjamin Peterson <benjamin@python.org> parents: 48288 diff changeset	691 return self.daemon
9d1856aba9f2 bring back the old API Benjamin Peterson <benjamin@python.org> parents: 48288 diff changeset	692
9d1856aba9f2 bring back the old API Benjamin Peterson <benjamin@python.org> parents: 48288 diff changeset	693 def setDaemon(self, daemonic):
9d1856aba9f2 bring back the old API Benjamin Peterson <benjamin@python.org> parents: 48288 diff changeset	694 self.daemon = daemonic
9d1856aba9f2 bring back the old API Benjamin Peterson <benjamin@python.org> parents: 48288 diff changeset	695
9d1856aba9f2 bring back the old API Benjamin Peterson <benjamin@python.org> parents: 48288 diff changeset	696 def getName(self):
9d1856aba9f2 bring back the old API Benjamin Peterson <benjamin@python.org> parents: 48288 diff changeset	697 return self.name
9d1856aba9f2 bring back the old API Benjamin Peterson <benjamin@python.org> parents: 48288 diff changeset	698
9d1856aba9f2 bring back the old API Benjamin Peterson <benjamin@python.org> parents: 48288 diff changeset	699 def setName(self, name):
9d1856aba9f2 bring back the old API Benjamin Peterson <benjamin@python.org> parents: 48288 diff changeset	700 self.name = name
9d1856aba9f2 bring back the old API Benjamin Peterson <benjamin@python.org> parents: 48288 diff changeset	701
19727 f3036d4e3c22 Patch #428326: New class threading.Timer. Martin v. Löwis <martin@v.loewis.de> parents: 19404 diff changeset	702 # The timer class was contributed by Itamar Shtull-Trauring
f3036d4e3c22 Patch #428326: New class threading.Timer. Martin v. Löwis <martin@v.loewis.de> parents: 19404 diff changeset	703
f3036d4e3c22 Patch #428326: New class threading.Timer. Martin v. Löwis <martin@v.loewis.de> parents: 19404 diff changeset	704 def Timer(args, *kwargs):
f3036d4e3c22 Patch #428326: New class threading.Timer. Martin v. Löwis <martin@v.loewis.de> parents: 19404 diff changeset	705 return _Timer(args, *kwargs)
f3036d4e3c22 Patch #428326: New class threading.Timer. Martin v. Löwis <martin@v.loewis.de> parents: 19404 diff changeset	706
f3036d4e3c22 Patch #428326: New class threading.Timer. Martin v. Löwis <martin@v.loewis.de> parents: 19404 diff changeset	707 class _Timer(Thread):
f3036d4e3c22 Patch #428326: New class threading.Timer. Martin v. Löwis <martin@v.loewis.de> parents: 19404 diff changeset	708 """Call a function after a specified number of seconds:
19953 0f9df563b65d Whitespace normalization. Tim Peters <tim.peters@gmail.com> parents: 19727 diff changeset	709
19727 f3036d4e3c22 Patch #428326: New class threading.Timer. Martin v. Löwis <martin@v.loewis.de> parents: 19404 diff changeset	710 t = Timer(30.0, f, args=[], kwargs={})
f3036d4e3c22 Patch #428326: New class threading.Timer. Martin v. Löwis <martin@v.loewis.de> parents: 19404 diff changeset	711 t.start()
f3036d4e3c22 Patch #428326: New class threading.Timer. Martin v. Löwis <martin@v.loewis.de> parents: 19404 diff changeset	712 t.cancel() # stop the timer's action if it's still waiting
f3036d4e3c22 Patch #428326: New class threading.Timer. Martin v. Löwis <martin@v.loewis.de> parents: 19404 diff changeset	713 """
19953 0f9df563b65d Whitespace normalization. Tim Peters <tim.peters@gmail.com> parents: 19727 diff changeset	714
19727 f3036d4e3c22 Patch #428326: New class threading.Timer. Martin v. Löwis <martin@v.loewis.de> parents: 19404 diff changeset	715 def __init__(self, interval, function, args=[], kwargs={}):
f3036d4e3c22 Patch #428326: New class threading.Timer. Martin v. Löwis <martin@v.loewis.de> parents: 19404 diff changeset	716 Thread.__init__(self)
f3036d4e3c22 Patch #428326: New class threading.Timer. Martin v. Löwis <martin@v.loewis.de> parents: 19404 diff changeset	717 self.interval = interval
f3036d4e3c22 Patch #428326: New class threading.Timer. Martin v. Löwis <martin@v.loewis.de> parents: 19404 diff changeset	718 self.function = function
f3036d4e3c22 Patch #428326: New class threading.Timer. Martin v. Löwis <martin@v.loewis.de> parents: 19404 diff changeset	719 self.args = args
f3036d4e3c22 Patch #428326: New class threading.Timer. Martin v. Löwis <martin@v.loewis.de> parents: 19404 diff changeset	720 self.kwargs = kwargs
f3036d4e3c22 Patch #428326: New class threading.Timer. Martin v. Löwis <martin@v.loewis.de> parents: 19404 diff changeset	721 self.finished = Event()
19953 0f9df563b65d Whitespace normalization. Tim Peters <tim.peters@gmail.com> parents: 19727 diff changeset	722
19727 f3036d4e3c22 Patch #428326: New class threading.Timer. Martin v. Löwis <martin@v.loewis.de> parents: 19404 diff changeset	723 def cancel(self):
f3036d4e3c22 Patch #428326: New class threading.Timer. Martin v. Löwis <martin@v.loewis.de> parents: 19404 diff changeset	724 """Stop the timer if it hasn't finished yet"""
f3036d4e3c22 Patch #428326: New class threading.Timer. Martin v. Löwis <martin@v.loewis.de> parents: 19404 diff changeset	725 self.finished.set()
19953 0f9df563b65d Whitespace normalization. Tim Peters <tim.peters@gmail.com> parents: 19727 diff changeset	726
19727 f3036d4e3c22 Patch #428326: New class threading.Timer. Martin v. Löwis <martin@v.loewis.de> parents: 19404 diff changeset	727 def run(self):
f3036d4e3c22 Patch #428326: New class threading.Timer. Martin v. Löwis <martin@v.loewis.de> parents: 19404 diff changeset	728 self.finished.wait(self.interval)
47598 c349f9fbc704 give the threading API PEP 8 names Benjamin Peterson <benjamin@python.org> parents: 47438 diff changeset	729 if not self.finished.is_set():
19727 f3036d4e3c22 Patch #428326: New class threading.Timer. Martin v. Löwis <martin@v.loewis.de> parents: 19404 diff changeset	730 self.function(self.args, *self.kwargs)
f3036d4e3c22 Patch #428326: New class threading.Timer. Martin v. Löwis <martin@v.loewis.de> parents: 19404 diff changeset	731 self.finished.set()
7949 58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	732
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	733 # Special thread class to represent the main thread
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	734 # This is garbage collected through an exit handler
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	735
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	736 class _MainThread(Thread):
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	737
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	738 def __init__(self):
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	739 Thread.__init__(self, name="MainThread")
45545 3e435a211356 Thread.start() used sleep(0.000001) to make sure it didn't return before the Jeffrey Yasskin <jyasskin@gmail.com> parents: 45478 diff changeset	740 self._Thread__started.set()
52593 587fcfbe08b6 fix Thread.ident when it is the main thread or a dummy thread #5632 Benjamin Peterson <benjamin@python.org> parents: 52590 diff changeset	741 self._set_ident()
52590 5744468e609b take the usual lock precautions around _active_limbo_lock Benjamin Peterson <benjamin@python.org> parents: 52579 diff changeset	742 with _active_limbo_lock:
5744468e609b take the usual lock precautions around _active_limbo_lock Benjamin Peterson <benjamin@python.org> parents: 52579 diff changeset	743 _active[_get_ident()] = self
7949 58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	744
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	745 def _set_daemon(self):
22867 e2f2187c3d2c Partial introduction of bools where appropriate. Guido van Rossum <guido@python.org> parents: 22830 diff changeset	746 return False
7949 58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	747
40542 4203f8e6e86a Bug #1566280: Explicitly invoke threading._shutdown from Py_Main, Martin v. Löwis <martin@v.loewis.de> parents: 38794 diff changeset	748 def _exitfunc(self):
7949 58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	749 self._Thread__stop()
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	750 t = _pickSomeNonDaemonThread()
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	751 if t:
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	752 if __debug__:
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	753 self._note("%s: waiting for other threads", self)
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	754 while t:
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	755 t.join()
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	756 t = _pickSomeNonDaemonThread()
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	757 if __debug__:
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	758 self._note("%s: exiting", self)
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	759 self._Thread__delete()
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	760
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	761 def _pickSomeNonDaemonThread():
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	762 for t in enumerate():
48288 e143a8f35241 backport threading property changes Benjamin Peterson <benjamin@python.org> parents: 48287 diff changeset	763 if not t.daemon and t.is_alive():
7949 58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	764 return t
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	765 return None
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	766
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	767
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	768 # Dummy thread class to represent threads not started here.
34363 35f31790c6f9 threading._DummyThread.__init__(): document obscure new code. Tim Peters <tim.peters@gmail.com> parents: 34361 diff changeset	769 # These aren't garbage collected when they die, nor can they be waited for.
47598 c349f9fbc704 give the threading API PEP 8 names Benjamin Peterson <benjamin@python.org> parents: 47438 diff changeset	770 # If they invoke anything in threading.py that calls current_thread(), they
34363 35f31790c6f9 threading._DummyThread.__init__(): document obscure new code. Tim Peters <tim.peters@gmail.com> parents: 34361 diff changeset	771 # leave an entry in the _active dict forever after.
47598 c349f9fbc704 give the threading API PEP 8 names Benjamin Peterson <benjamin@python.org> parents: 47438 diff changeset	772 # Their purpose is to return something from current_thread().
7949 58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	773 # They are marked as daemon threads so we won't wait for them
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	774 # when we exit (conform previous semantics).
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	775
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	776 class _DummyThread(Thread):
15873 3dd217fbdd59 Whitespace normalization. Tim Peters <tim.peters@gmail.com> parents: 15586 diff changeset	777
7949 58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	778 def __init__(self):
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	779 Thread.__init__(self, name=_newname("Dummy-%d"))
34363 35f31790c6f9 threading._DummyThread.__init__(): document obscure new code. Tim Peters <tim.peters@gmail.com> parents: 34361 diff changeset	780
35f31790c6f9 threading._DummyThread.__init__(): document obscure new code. Tim Peters <tim.peters@gmail.com> parents: 34361 diff changeset	781 # Thread.__block consumes an OS-level locking primitive, which
35f31790c6f9 threading._DummyThread.__init__(): document obscure new code. Tim Peters <tim.peters@gmail.com> parents: 34361 diff changeset	782 # can never be used by a _DummyThread. Since a _DummyThread
35f31790c6f9 threading._DummyThread.__init__(): document obscure new code. Tim Peters <tim.peters@gmail.com> parents: 34361 diff changeset	783 # instance is immortal, that's bad, so release this resource.
34361 8618168dca27 In _DummyThread objects the lock stored in __block (allocated thanks to Brett Cannon <bcannon@gmail.com> parents: 32778 diff changeset	784 del self._Thread__block
34363 35f31790c6f9 threading._DummyThread.__init__(): document obscure new code. Tim Peters <tim.peters@gmail.com> parents: 34361 diff changeset	785
45545 3e435a211356 Thread.start() used sleep(0.000001) to make sure it didn't return before the Jeffrey Yasskin <jyasskin@gmail.com> parents: 45478 diff changeset	786 self._Thread__started.set()
52593 587fcfbe08b6 fix Thread.ident when it is the main thread or a dummy thread #5632 Benjamin Peterson <benjamin@python.org> parents: 52590 diff changeset	787 self._set_ident()
52590 5744468e609b take the usual lock precautions around _active_limbo_lock Benjamin Peterson <benjamin@python.org> parents: 52579 diff changeset	788 with _active_limbo_lock:
5744468e609b take the usual lock precautions around _active_limbo_lock Benjamin Peterson <benjamin@python.org> parents: 52579 diff changeset	789 _active[_get_ident()] = self
7949 58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	790
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	791 def _set_daemon(self):
22867 e2f2187c3d2c Partial introduction of bools where appropriate. Guido van Rossum <guido@python.org> parents: 22830 diff changeset	792 return True
7949 58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	793
21981 4e9cc26e03fd SF #515023. Make _DummyThread.join() signature match base class (Thread) Neal Norwitz <nnorwitz@gmail.com> parents: 21589 diff changeset	794 def join(self, timeout=None):
22867 e2f2187c3d2c Partial introduction of bools where appropriate. Guido van Rossum <guido@python.org> parents: 22830 diff changeset	795 assert False, "cannot join a dummy thread"
7949 58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	796
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	797
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	798 # Global API functions
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	799
48942 bc585b4d4606 remove py3k warnings about the threading api; update docs Benjamin Peterson <benjamin@python.org> parents: 48830 diff changeset	800 def currentThread():
7949 58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	801 try:
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	802 return _active[_get_ident()]
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	803 except KeyError:
47598 c349f9fbc704 give the threading API PEP 8 names Benjamin Peterson <benjamin@python.org> parents: 47438 diff changeset	804 ##print "current_thread(): no current thread for", _get_ident()
7949 58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	805 return _DummyThread()
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	806
48942 bc585b4d4606 remove py3k warnings about the threading api; update docs Benjamin Peterson <benjamin@python.org> parents: 48830 diff changeset	807 current_thread = currentThread
47601 8dc4312a2f75 add aliases to threading module Benjamin Peterson <benjamin@python.org> parents: 47598 diff changeset	808
48942 bc585b4d4606 remove py3k warnings about the threading api; update docs Benjamin Peterson <benjamin@python.org> parents: 48830 diff changeset	809 def activeCount():
52590 5744468e609b take the usual lock precautions around _active_limbo_lock Benjamin Peterson <benjamin@python.org> parents: 52579 diff changeset	810 with _active_limbo_lock:
5744468e609b take the usual lock precautions around _active_limbo_lock Benjamin Peterson <benjamin@python.org> parents: 52579 diff changeset	811 return len(_active) + len(_limbo)
7949 58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	812
48942 bc585b4d4606 remove py3k warnings about the threading api; update docs Benjamin Peterson <benjamin@python.org> parents: 48830 diff changeset	813 active_count = activeCount
47601 8dc4312a2f75 add aliases to threading module Benjamin Peterson <benjamin@python.org> parents: 47598 diff changeset	814
57118 fd7828051865 Issue #7264: Fix a possible deadlock when deallocating thread-local objects Antoine Pitrou <solipsis@pitrou.net> parents: 56511 diff changeset	815 def _enumerate():
fd7828051865 Issue #7264: Fix a possible deadlock when deallocating thread-local objects Antoine Pitrou <solipsis@pitrou.net> parents: 56511 diff changeset	816 # Same as enumerate(), but without the lock. Internal use only.
fd7828051865 Issue #7264: Fix a possible deadlock when deallocating thread-local objects Antoine Pitrou <solipsis@pitrou.net> parents: 56511 diff changeset	817 return _active.values() + _limbo.values()
fd7828051865 Issue #7264: Fix a possible deadlock when deallocating thread-local objects Antoine Pitrou <solipsis@pitrou.net> parents: 56511 diff changeset	818
7949 58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	819 def enumerate():
52590 5744468e609b take the usual lock precautions around _active_limbo_lock Benjamin Peterson <benjamin@python.org> parents: 52579 diff changeset	820 with _active_limbo_lock:
5744468e609b take the usual lock precautions around _active_limbo_lock Benjamin Peterson <benjamin@python.org> parents: 52579 diff changeset	821 return _active.values() + _limbo.values()
7949 58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	822
38794 f7d23bca599f Patch #1454481: Make thread stack size runtime tunable. Andrew MacIntyre <andymac@bullseye.apana.org.au> parents: 38592 diff changeset	823 from thread import stack_size
f7d23bca599f Patch #1454481: Make thread stack size runtime tunable. Andrew MacIntyre <andymac@bullseye.apana.org.au> parents: 38592 diff changeset	824
40542 4203f8e6e86a Bug #1566280: Explicitly invoke threading._shutdown from Py_Main, Martin v. Löwis <martin@v.loewis.de> parents: 38794 diff changeset	825 # Create the main thread object,
4203f8e6e86a Bug #1566280: Explicitly invoke threading._shutdown from Py_Main, Martin v. Löwis <martin@v.loewis.de> parents: 38794 diff changeset	826 # and make it available for the interpreter
4203f8e6e86a Bug #1566280: Explicitly invoke threading._shutdown from Py_Main, Martin v. Löwis <martin@v.loewis.de> parents: 38794 diff changeset	827 # (Py_Main) as threading._shutdown.
7949 58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	828
40542 4203f8e6e86a Bug #1566280: Explicitly invoke threading._shutdown from Py_Main, Martin v. Löwis <martin@v.loewis.de> parents: 38794 diff changeset	829 _shutdown = _MainThread()._exitfunc
7949 58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	830
32673 97768d87394a Implemented thread-local data as proposed on python-dev: Jim Fulton <jim@zope.com> parents: 32475 diff changeset	831 # get thread-local implementation, either from the thread
97768d87394a Implemented thread-local data as proposed on python-dev: Jim Fulton <jim@zope.com> parents: 32475 diff changeset	832 # module, or from the python fallback
97768d87394a Implemented thread-local data as proposed on python-dev: Jim Fulton <jim@zope.com> parents: 32475 diff changeset	833
97768d87394a Implemented thread-local data as proposed on python-dev: Jim Fulton <jim@zope.com> parents: 32475 diff changeset	834 try:
97768d87394a Implemented thread-local data as proposed on python-dev: Jim Fulton <jim@zope.com> parents: 32475 diff changeset	835 from thread import _local as local
97768d87394a Implemented thread-local data as proposed on python-dev: Jim Fulton <jim@zope.com> parents: 32475 diff changeset	836 except ImportError:
97768d87394a Implemented thread-local data as proposed on python-dev: Jim Fulton <jim@zope.com> parents: 32475 diff changeset	837 from _threading_local import local
97768d87394a Implemented thread-local data as proposed on python-dev: Jim Fulton <jim@zope.com> parents: 32475 diff changeset	838
7949 58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	839
47985 09beb96ba20d Apply patch for 874900: threading module can deadlock after fork Jesse Noller <jnoller@gmail.com> parents: 47606 diff changeset	840 def _after_fork():
09beb96ba20d Apply patch for 874900: threading module can deadlock after fork Jesse Noller <jnoller@gmail.com> parents: 47606 diff changeset	841 # This function is called by Python/ceval.c:PyEval_ReInitThreads which
09beb96ba20d Apply patch for 874900: threading module can deadlock after fork Jesse Noller <jnoller@gmail.com> parents: 47606 diff changeset	842 # is called from PyOS_AfterFork. Here we cleanup threading module state
09beb96ba20d Apply patch for 874900: threading module can deadlock after fork Jesse Noller <jnoller@gmail.com> parents: 47606 diff changeset	843 # that should not exist after a fork.
09beb96ba20d Apply patch for 874900: threading module can deadlock after fork Jesse Noller <jnoller@gmail.com> parents: 47606 diff changeset	844
09beb96ba20d Apply patch for 874900: threading module can deadlock after fork Jesse Noller <jnoller@gmail.com> parents: 47606 diff changeset	845 # Reset _active_limbo_lock, in case we forked while the lock was held
09beb96ba20d Apply patch for 874900: threading module can deadlock after fork Jesse Noller <jnoller@gmail.com> parents: 47606 diff changeset	846 # by another (non-forked) thread. http://bugs.python.org/issue874900
09beb96ba20d Apply patch for 874900: threading module can deadlock after fork Jesse Noller <jnoller@gmail.com> parents: 47606 diff changeset	847 global _active_limbo_lock
09beb96ba20d Apply patch for 874900: threading module can deadlock after fork Jesse Noller <jnoller@gmail.com> parents: 47606 diff changeset	848 _active_limbo_lock = _allocate_lock()
09beb96ba20d Apply patch for 874900: threading module can deadlock after fork Jesse Noller <jnoller@gmail.com> parents: 47606 diff changeset	849
09beb96ba20d Apply patch for 874900: threading module can deadlock after fork Jesse Noller <jnoller@gmail.com> parents: 47606 diff changeset	850 # fork() only copied the current thread; clear references to others.
09beb96ba20d Apply patch for 874900: threading module can deadlock after fork Jesse Noller <jnoller@gmail.com> parents: 47606 diff changeset	851 new_active = {}
09beb96ba20d Apply patch for 874900: threading module can deadlock after fork Jesse Noller <jnoller@gmail.com> parents: 47606 diff changeset	852 current = current_thread()
09beb96ba20d Apply patch for 874900: threading module can deadlock after fork Jesse Noller <jnoller@gmail.com> parents: 47606 diff changeset	853 with _active_limbo_lock:
49059 fda689970b3f Backport relevant part of r66274 (in issue #874900). Antoine Pitrou <solipsis@pitrou.net> parents: 48942 diff changeset	854 for thread in _active.itervalues():
47985 09beb96ba20d Apply patch for 874900: threading module can deadlock after fork Jesse Noller <jnoller@gmail.com> parents: 47606 diff changeset	855 if thread is current:
49059 fda689970b3f Backport relevant part of r66274 (in issue #874900). Antoine Pitrou <solipsis@pitrou.net> parents: 48942 diff changeset	856 # There is only one active thread. We reset the ident to
fda689970b3f Backport relevant part of r66274 (in issue #874900). Antoine Pitrou <solipsis@pitrou.net> parents: 48942 diff changeset	857 # its new value since it can have changed.
fda689970b3f Backport relevant part of r66274 (in issue #874900). Antoine Pitrou <solipsis@pitrou.net> parents: 48942 diff changeset	858 ident = _get_ident()
fda689970b3f Backport relevant part of r66274 (in issue #874900). Antoine Pitrou <solipsis@pitrou.net> parents: 48942 diff changeset	859 thread._Thread__ident = ident
47985 09beb96ba20d Apply patch for 874900: threading module can deadlock after fork Jesse Noller <jnoller@gmail.com> parents: 47606 diff changeset	860 new_active[ident] = thread
09beb96ba20d Apply patch for 874900: threading module can deadlock after fork Jesse Noller <jnoller@gmail.com> parents: 47606 diff changeset	861 else:
09beb96ba20d Apply patch for 874900: threading module can deadlock after fork Jesse Noller <jnoller@gmail.com> parents: 47606 diff changeset	862 # All the others are already stopped.
09beb96ba20d Apply patch for 874900: threading module can deadlock after fork Jesse Noller <jnoller@gmail.com> parents: 47606 diff changeset	863 # We don't call _Thread__stop() because it tries to acquire
09beb96ba20d Apply patch for 874900: threading module can deadlock after fork Jesse Noller <jnoller@gmail.com> parents: 47606 diff changeset	864 # thread._Thread__block which could also have been held while
09beb96ba20d Apply patch for 874900: threading module can deadlock after fork Jesse Noller <jnoller@gmail.com> parents: 47606 diff changeset	865 # we forked.
09beb96ba20d Apply patch for 874900: threading module can deadlock after fork Jesse Noller <jnoller@gmail.com> parents: 47606 diff changeset	866 thread._Thread__stopped = True
09beb96ba20d Apply patch for 874900: threading module can deadlock after fork Jesse Noller <jnoller@gmail.com> parents: 47606 diff changeset	867
09beb96ba20d Apply patch for 874900: threading module can deadlock after fork Jesse Noller <jnoller@gmail.com> parents: 47606 diff changeset	868 _limbo.clear()
09beb96ba20d Apply patch for 874900: threading module can deadlock after fork Jesse Noller <jnoller@gmail.com> parents: 47606 diff changeset	869 _active.clear()
09beb96ba20d Apply patch for 874900: threading module can deadlock after fork Jesse Noller <jnoller@gmail.com> parents: 47606 diff changeset	870 _active.update(new_active)
09beb96ba20d Apply patch for 874900: threading module can deadlock after fork Jesse Noller <jnoller@gmail.com> parents: 47606 diff changeset	871 assert len(_active) == 1
09beb96ba20d Apply patch for 874900: threading module can deadlock after fork Jesse Noller <jnoller@gmail.com> parents: 47606 diff changeset	872
09beb96ba20d Apply patch for 874900: threading module can deadlock after fork Jesse Noller <jnoller@gmail.com> parents: 47606 diff changeset	873
7949 58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	874 # Self-test code
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	875
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	876 def _test():
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	877
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	878 class BoundedQueue(_Verbose):
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	879
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	880 def __init__(self, limit):
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	881 _Verbose.__init__(self)
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	882 self.mon = RLock()
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	883 self.rc = Condition(self.mon)
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	884 self.wc = Condition(self.mon)
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	885 self.limit = limit
31436 63fa60f2d61c * Move collections.deque() in from the sandbox Raymond Hettinger <python@rcn.com> parents: 30862 diff changeset	886 self.queue = deque()
7949 58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	887
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	888 def put(self, item):
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	889 self.mon.acquire()
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	890 while len(self.queue) >= self.limit:
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	891 self._note("put(%s): queue full", item)
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	892 self.wc.wait()
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	893 self.queue.append(item)
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	894 self._note("put(%s): appended, length now %d",
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	895 item, len(self.queue))
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	896 self.rc.notify()
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	897 self.mon.release()
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	898
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	899 def get(self):
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	900 self.mon.acquire()
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	901 while not self.queue:
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	902 self._note("get(): queue empty")
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	903 self.rc.wait()
31436 63fa60f2d61c * Move collections.deque() in from the sandbox Raymond Hettinger <python@rcn.com> parents: 30862 diff changeset	904 item = self.queue.popleft()
7949 58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	905 self._note("get(): got %s, %d left", item, len(self.queue))
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	906 self.wc.notify()
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	907 self.mon.release()
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	908 return item
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	909
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	910 class ProducerThread(Thread):
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	911
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	912 def __init__(self, queue, quota):
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	913 Thread.__init__(self, name="Producer")
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	914 self.queue = queue
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	915 self.quota = quota
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	916
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	917 def run(self):
8394 93aa08c77e60 Use random instead of whrandom. Guido van Rossum <guido@python.org> parents: 7949 diff changeset	918 from random import random
7949 58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	919 counter = 0
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	920 while counter < self.quota:
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	921 counter = counter + 1
48288 e143a8f35241 backport threading property changes Benjamin Peterson <benjamin@python.org> parents: 48287 diff changeset	922 self.queue.put("%s.%d" % (self.name, counter))
7949 58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	923 _sleep(random() * 0.00001)
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	924
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	925
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	926 class ConsumerThread(Thread):
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	927
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	928 def __init__(self, queue, count):
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	929 Thread.__init__(self, name="Consumer")
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	930 self.queue = queue
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	931 self.count = count
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	932
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	933 def run(self):
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	934 while self.count > 0:
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	935 item = self.queue.get()
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	936 print item
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	937 self.count = self.count - 1
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	938
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	939 NP = 3
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	940 QL = 4
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	941 NI = 5
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	942
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	943 Q = BoundedQueue(QL)
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	944 P = []
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	945 for i in range(NP):
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	946 t = ProducerThread(Q, NI)
48288 e143a8f35241 backport threading property changes Benjamin Peterson <benjamin@python.org> parents: 48287 diff changeset	947 t.name = ("Producer-%d" % (i+1))
7949 58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	948 P.append(t)
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	949 C = ConsumerThread(Q, NI*NP)
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	950 for t in P:
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	951 t.start()
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	952 _sleep(0.000001)
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	953 C.start()
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	954 for t in P:
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	955 t.join()
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	956 C.join()
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	957
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	958 if __name__ == '__main__':
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	959 _test()

Mercurial > cpython-lru_cache-weakref

annotate Lib/threading.py @ 57303:4aa4c19dfaed legacy-trunk