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

annotate Lib/threading.py @ 51330:ca423008fa4a legacy-trunk

#5144: document that PySys_SetArgv prepends the script directory (or the empty string) to sys.path.

author	Georg Brandl <georg@python.org>
date	Thu, 05 Feb 2009 10:37:07 +0000
parents	fda689970b3f
children	21ba0b3fe819 b5aa8aa78c0f

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
7949 58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	109 return "<%s(%s, %d)>" % (
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	110 self.__class__.__name__,
48830 f970a4f7560f fix a few get_name() calls and turn then to .name Benjamin Peterson <benjamin@python.org> parents: 48295 diff changeset	111 owner and owner.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	112 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	113
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	114 def acquire(self, blocking=1):
47598 c349f9fbc704 give the threading API PEP 8 names Benjamin Peterson <benjamin@python.org> parents: 47438 diff changeset	115 me = 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	116 if self.__owner is me:
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	117 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	118 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	119 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	120 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	121 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	122 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	123 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	124 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	125 if __debug__:
34512 cb7896d77de5 Fixed typo in verbose output. Brett Cannon <bcannon@gmail.com> parents: 34363 diff changeset	126 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	127 else:
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	128 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	129 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	130 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	131
36737 fa92fe15251a Updates to the with-statement: Guido van Rossum <guido@python.org> parents: 35932 diff changeset	132 __enter__ = acquire
fa92fe15251a Updates to the with-statement: Guido van Rossum <guido@python.org> parents: 35932 diff changeset	133
7949 58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	134 def release(self):
47598 c349f9fbc704 give the threading API PEP 8 names Benjamin Peterson <benjamin@python.org> parents: 47438 diff changeset	135 if self.__owner is not 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	136 raise RuntimeError("cannot release un-aquired 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	137 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	138 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	139 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	140 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	141 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	142 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	143 else:
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	144 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	145 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	146
36737 fa92fe15251a Updates to the with-statement: Guido van Rossum <guido@python.org> parents: 35932 diff changeset	147 def __exit__(self, t, v, tb):
fa92fe15251a Updates to the with-statement: Guido van Rossum <guido@python.org> parents: 35932 diff changeset	148 self.release()
fa92fe15251a Updates to the with-statement: Guido van Rossum <guido@python.org> parents: 35932 diff changeset	149
7949 58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	150 # 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	151
48131 5279d7961093 Remove a tuple unpacking in a parameter list to suppress the SyntaxWarning with Brett Cannon <bcannon@gmail.com> parents: 47985 diff changeset	152 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	153 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	154 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	155 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	156 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	157 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	158 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	159
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	160 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	161 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	162 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	163 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	164 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	165 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	166 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	167 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	168 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	169
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	170 def _is_owned(self):
47598 c349f9fbc704 give the threading API PEP 8 names Benjamin Peterson <benjamin@python.org> parents: 47438 diff changeset	171 return self.__owner is 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	172
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	173
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	174 def Condition(args, *kwargs):
28089 14f65d661084 Get rid of many apply() calls. Guido van Rossum <guido@python.org> parents: 26905 diff changeset	175 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	176
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	177 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	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 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	180 _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	181 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	182 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	183 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	184 # 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	185 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	186 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	187 # 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	188 # 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	189 # 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	190 try:
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	191 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	192 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	193 pass
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	194 try:
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	195 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	196 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	197 pass
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	198 try:
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	199 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	200 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	201 pass
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	202 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	203
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	204 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	205 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	206
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 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	208 return self.__lock.__exit__(*args)
36737 fa92fe15251a Updates to the with-statement: Guido van Rossum <guido@python.org> parents: 35932 diff changeset	209
7949 58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	210 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	211 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	212
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	213 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	214 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	215
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	216 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	217 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	218
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	219 def _is_owned(self):
47598 c349f9fbc704 give the threading API PEP 8 names Benjamin Peterson <benjamin@python.org> parents: 47438 diff changeset	220 # 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	221 # 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	222 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	223 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	224 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	225 else:
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 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	227
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	228 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	229 if not self._is_owned():
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	230 raise RuntimeError("cannot wait on un-aquired 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	231 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	232 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	233 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	234 saved_state = self._release_save()
17303 836cdf8d1245 SF bug [#410708] Condition.wait() and KeyboardInterrupt. Tim Peters <tim.peters@gmail.com> parents: 15873 diff changeset	235 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	236 if timeout is None:
836cdf8d1245 SF bug [#410708] Condition.wait() and KeyboardInterrupt. Tim Peters <tim.peters@gmail.com> parents: 15873 diff changeset	237 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	238 if __debug__:
17303 836cdf8d1245 SF bug [#410708] Condition.wait() and KeyboardInterrupt. Tim Peters <tim.peters@gmail.com> parents: 15873 diff changeset	239 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	240 else:
19184 2967ca96d07e _Condition.wait(): never sleep longer than the timeout time remaining, Tim Peters <tim.peters@gmail.com> parents: 17303 diff changeset	241 # 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	242 # 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	243 # 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	244 # 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	245 # 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	246 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	247 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	248 while True:
17303 836cdf8d1245 SF bug [#410708] Condition.wait() and KeyboardInterrupt. Tim Peters <tim.peters@gmail.com> parents: 15873 diff changeset	249 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	250 if gotit:
17303 836cdf8d1245 SF bug [#410708] Condition.wait() and KeyboardInterrupt. Tim Peters <tim.peters@gmail.com> parents: 15873 diff changeset	251 break
19184 2967ca96d07e _Condition.wait(): never sleep longer than the timeout time remaining, Tim Peters <tim.peters@gmail.com> parents: 17303 diff changeset	252 remaining = endtime - _time()
2967ca96d07e _Condition.wait(): never sleep longer than the timeout time remaining, Tim Peters <tim.peters@gmail.com> parents: 17303 diff changeset	253 if remaining <= 0:
2967ca96d07e _Condition.wait(): never sleep longer than the timeout time remaining, Tim Peters <tim.peters@gmail.com> parents: 17303 diff changeset	254 break
2967ca96d07e _Condition.wait(): never sleep longer than the timeout time remaining, Tim Peters <tim.peters@gmail.com> parents: 17303 diff changeset	255 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	256 _sleep(delay)
836cdf8d1245 SF bug [#410708] Condition.wait() and KeyboardInterrupt. Tim Peters <tim.peters@gmail.com> parents: 15873 diff changeset	257 if not gotit:
836cdf8d1245 SF bug [#410708] Condition.wait() and KeyboardInterrupt. Tim Peters <tim.peters@gmail.com> parents: 15873 diff changeset	258 if __debug__:
836cdf8d1245 SF bug [#410708] Condition.wait() and KeyboardInterrupt. Tim Peters <tim.peters@gmail.com> parents: 15873 diff changeset	259 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	260 try:
836cdf8d1245 SF bug [#410708] Condition.wait() and KeyboardInterrupt. Tim Peters <tim.peters@gmail.com> parents: 15873 diff changeset	261 self.__waiters.remove(waiter)
836cdf8d1245 SF bug [#410708] Condition.wait() and KeyboardInterrupt. Tim Peters <tim.peters@gmail.com> parents: 15873 diff changeset	262 except ValueError:
836cdf8d1245 SF bug [#410708] Condition.wait() and KeyboardInterrupt. Tim Peters <tim.peters@gmail.com> parents: 15873 diff changeset	263 pass
836cdf8d1245 SF bug [#410708] Condition.wait() and KeyboardInterrupt. Tim Peters <tim.peters@gmail.com> parents: 15873 diff changeset	264 else:
836cdf8d1245 SF bug [#410708] Condition.wait() and KeyboardInterrupt. Tim Peters <tim.peters@gmail.com> parents: 15873 diff changeset	265 if __debug__:
836cdf8d1245 SF bug [#410708] Condition.wait() and KeyboardInterrupt. Tim Peters <tim.peters@gmail.com> parents: 15873 diff changeset	266 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	267 finally:
836cdf8d1245 SF bug [#410708] Condition.wait() and KeyboardInterrupt. Tim Peters <tim.peters@gmail.com> parents: 15873 diff changeset	268 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	269
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	270 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	271 if not self._is_owned():
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	272 raise RuntimeError("cannot notify on un-aquired 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	273 __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	274 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	275 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	276 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	277 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	278 return
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(): 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	280 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	281 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	282 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	283 try:
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	284 __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	285 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	286 pass
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	287
48942 bc585b4d4606 remove py3k warnings about the threading api; update docs Benjamin Peterson <benjamin@python.org> parents: 48830 diff changeset	288 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	289 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	290
48942 bc585b4d4606 remove py3k warnings about the threading api; update docs Benjamin Peterson <benjamin@python.org> parents: 48830 diff changeset	291 notify_all = notifyAll
47601 8dc4312a2f75 add aliases to threading module Benjamin Peterson <benjamin@python.org> parents: 47598 diff changeset	292
7949 58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	293
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	294 def Semaphore(args, *kwargs):
28089 14f65d661084 Get rid of many apply() calls. Guido van Rossum <guido@python.org> parents: 26905 diff changeset	295 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	296
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	297 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	298
11876 c27d3e8c45c4 Fix a typo in a comment Andrew M. Kuchling <amk@amk.ca> parents: 11707 diff changeset	299 # 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	300
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	301 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	302 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	303 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	304 _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	305 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	306 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	307
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	308 def acquire(self, blocking=1):
22867 e2f2187c3d2c Partial introduction of bools where appropriate. Guido van Rossum <guido@python.org> parents: 22830 diff changeset	309 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	310 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	311 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	312 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	313 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	314 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	315 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	316 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	317 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	318 else:
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.__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	320 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	321 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	322 self, self.__value)
22867 e2f2187c3d2c Partial introduction of bools where appropriate. Guido van Rossum <guido@python.org> parents: 22830 diff changeset	323 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	324 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	325 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	326
36737 fa92fe15251a Updates to the with-statement: Guido van Rossum <guido@python.org> parents: 35932 diff changeset	327 __enter__ = acquire
fa92fe15251a Updates to the with-statement: Guido van Rossum <guido@python.org> parents: 35932 diff changeset	328
7949 58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	329 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	330 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	331 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	332 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	333 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	334 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	335 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	336 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	337
36737 fa92fe15251a Updates to the with-statement: Guido van Rossum <guido@python.org> parents: 35932 diff changeset	338 def __exit__(self, t, v, tb):
fa92fe15251a Updates to the with-statement: Guido van Rossum <guido@python.org> parents: 35932 diff changeset	339 self.release()
fa92fe15251a Updates to the with-statement: Guido van Rossum <guido@python.org> parents: 35932 diff changeset	340
7949 58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	341
19404 6125d9f92441 Added new BoundedSemaphore class. Closes bug 452836. Skip Montanaro <skip@pobox.com> parents: 19379 diff changeset	342 def BoundedSemaphore(args, *kwargs):
28089 14f65d661084 Get rid of many apply() calls. Guido van Rossum <guido@python.org> parents: 26905 diff changeset	343 return _BoundedSemaphore(args, *kwargs)
19404 6125d9f92441 Added new BoundedSemaphore class. Closes bug 452836. Skip Montanaro <skip@pobox.com> parents: 19379 diff changeset	344
6125d9f92441 Added new BoundedSemaphore class. Closes bug 452836. Skip Montanaro <skip@pobox.com> parents: 19379 diff changeset	345 class _BoundedSemaphore(_Semaphore):
6125d9f92441 Added new BoundedSemaphore class. Closes bug 452836. Skip Montanaro <skip@pobox.com> parents: 19379 diff changeset	346 """Semaphore that checks that # releases is <= # acquires"""
6125d9f92441 Added new BoundedSemaphore class. Closes bug 452836. Skip Montanaro <skip@pobox.com> parents: 19379 diff changeset	347 def __init__(self, value=1, verbose=None):
6125d9f92441 Added new BoundedSemaphore class. Closes bug 452836. Skip Montanaro <skip@pobox.com> parents: 19379 diff changeset	348 _Semaphore.__init__(self, value, verbose)
6125d9f92441 Added new BoundedSemaphore class. Closes bug 452836. Skip Montanaro <skip@pobox.com> parents: 19379 diff changeset	349 self._initial_value = value
6125d9f92441 Added new BoundedSemaphore class. Closes bug 452836. Skip Montanaro <skip@pobox.com> parents: 19379 diff changeset	350
6125d9f92441 Added new BoundedSemaphore class. Closes bug 452836. Skip Montanaro <skip@pobox.com> parents: 19379 diff changeset	351 def release(self):
6125d9f92441 Added new BoundedSemaphore class. Closes bug 452836. Skip Montanaro <skip@pobox.com> parents: 19379 diff changeset	352 if self._Semaphore__value >= self._initial_value:
6125d9f92441 Added new BoundedSemaphore class. Closes bug 452836. Skip Montanaro <skip@pobox.com> parents: 19379 diff changeset	353 raise ValueError, "Semaphore released too many times"
6125d9f92441 Added new BoundedSemaphore class. Closes bug 452836. Skip Montanaro <skip@pobox.com> parents: 19379 diff changeset	354 return _Semaphore.release(self)
6125d9f92441 Added new BoundedSemaphore class. Closes bug 452836. Skip Montanaro <skip@pobox.com> parents: 19379 diff changeset	355
6125d9f92441 Added new BoundedSemaphore class. Closes bug 452836. Skip Montanaro <skip@pobox.com> parents: 19379 diff changeset	356
7949 58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	357 def Event(args, *kwargs):
28089 14f65d661084 Get rid of many apply() calls. Guido van Rossum <guido@python.org> parents: 26905 diff changeset	358 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	359
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	360 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	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 # 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	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 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	365 _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	366 self.__cond = Condition(Lock())
22867 e2f2187c3d2c Partial introduction of bools where appropriate. Guido van Rossum <guido@python.org> parents: 22830 diff changeset	367 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	368
48942 bc585b4d4606 remove py3k warnings about the threading api; update docs Benjamin Peterson <benjamin@python.org> parents: 48830 diff changeset	369 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	370 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	371
48942 bc585b4d4606 remove py3k warnings about the threading api; update docs Benjamin Peterson <benjamin@python.org> parents: 48830 diff changeset	372 is_set = isSet
47601 8dc4312a2f75 add aliases to threading module Benjamin Peterson <benjamin@python.org> parents: 47598 diff changeset	373
7949 58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	374 def set(self):
44918 685e96d20881 Revert 60189 and restore performance. Raymond Hettinger <python@rcn.com> parents: 44870 diff changeset	375 self.__cond.acquire()
685e96d20881 Revert 60189 and restore performance. Raymond Hettinger <python@rcn.com> parents: 44870 diff changeset	376 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	377 self.__flag = True
47598 c349f9fbc704 give the threading API PEP 8 names Benjamin Peterson <benjamin@python.org> parents: 47438 diff changeset	378 self.__cond.notify_all()
44918 685e96d20881 Revert 60189 and restore performance. Raymond Hettinger <python@rcn.com> parents: 44870 diff changeset	379 finally:
685e96d20881 Revert 60189 and restore performance. Raymond Hettinger <python@rcn.com> parents: 44870 diff changeset	380 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	381
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	382 def clear(self):
44918 685e96d20881 Revert 60189 and restore performance. Raymond Hettinger <python@rcn.com> parents: 44870 diff changeset	383 self.__cond.acquire()
685e96d20881 Revert 60189 and restore performance. Raymond Hettinger <python@rcn.com> parents: 44870 diff changeset	384 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	385 self.__flag = False
44918 685e96d20881 Revert 60189 and restore performance. Raymond Hettinger <python@rcn.com> parents: 44870 diff changeset	386 finally:
685e96d20881 Revert 60189 and restore performance. Raymond Hettinger <python@rcn.com> parents: 44870 diff changeset	387 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	388
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	389 def wait(self, timeout=None):
44918 685e96d20881 Revert 60189 and restore performance. Raymond Hettinger <python@rcn.com> parents: 44870 diff changeset	390 self.__cond.acquire()
685e96d20881 Revert 60189 and restore performance. Raymond Hettinger <python@rcn.com> parents: 44870 diff changeset	391 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	392 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	393 self.__cond.wait(timeout)
44918 685e96d20881 Revert 60189 and restore performance. Raymond Hettinger <python@rcn.com> parents: 44870 diff changeset	394 finally:
685e96d20881 Revert 60189 and restore performance. Raymond Hettinger <python@rcn.com> parents: 44870 diff changeset	395 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	396
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	397 # 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	398 _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	399 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	400 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	401 _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	402 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	403
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	404 # 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	405 _active_limbo_lock = _allocate_lock()
34363 35f31790c6f9 threading._DummyThread.__init__(): document obscure new code. Tim Peters <tim.peters@gmail.com> parents: 34361 diff changeset	406 _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	407 _limbo = {}
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	408
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	409
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	410 # 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	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 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	413
22867 e2f2187c3d2c Partial introduction of bools where appropriate. Guido van Rossum <guido@python.org> parents: 22830 diff changeset	414 __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	415 # 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	416 # 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	417 # 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	418 # 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	419 __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	420 # 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	421 # 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	422 __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	423
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	424 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	425 args=(), kwargs=None, verbose=None):
8474 049aa3a8a172 Get rid of tabnanny's last complaints. Guido van Rossum <guido@python.org> parents: 8454 diff changeset	426 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	427 _Verbose.__init__(self, verbose)
35236 d0c6965b525e bug [ 1238170 ] threading.Thread uses {} as default argument Georg Brandl <georg@python.org> parents: 34512 diff changeset	428 if kwargs is None:
d0c6965b525e bug [ 1238170 ] threading.Thread uses {} as default argument Georg Brandl <georg@python.org> parents: 34512 diff changeset	429 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	430 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	431 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	432 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	433 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	434 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	435 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	436 self.__started = Event()
22867 e2f2187c3d2c Partial introduction of bools where appropriate. Guido van Rossum <guido@python.org> parents: 22830 diff changeset	437 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	438 self.__block = Condition(Lock())
22867 e2f2187c3d2c Partial introduction of bools where appropriate. Guido van Rossum <guido@python.org> parents: 22830 diff changeset	439 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	440 # 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	441 # 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	442 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	443
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	444 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	445 # Overridden in _MainThread and _DummyThread
48288 e143a8f35241 backport threading property changes Benjamin Peterson <benjamin@python.org> parents: 48287 diff changeset	446 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	447
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	448 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	449 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	450 status = "initial"
47598 c349f9fbc704 give the threading API PEP 8 names Benjamin Peterson <benjamin@python.org> parents: 47438 diff changeset	451 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	452 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	453 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	454 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	455 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	456 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	457 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	458 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	459 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	460
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	461 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	462 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	463 raise RuntimeError("thread.__init__() not called")
47598 c349f9fbc704 give the threading API PEP 8 names Benjamin Peterson <benjamin@python.org> parents: 47438 diff changeset	464 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	465 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	466 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	467 self._note("%s.start(): starting thread", self)
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	468 _active_limbo_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	469 _limbo[self] = self
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	470 _active_limbo_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	471 _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	472 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	473
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	474 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	475 try:
9f183ae3458b Followup to r61011: Also avoid the reference cycle when the Thread's target Jeffrey Yasskin <jyasskin@gmail.com> parents: 45477 diff changeset	476 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	477 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	478 finally:
9f183ae3458b Followup to r61011: Also avoid the reference cycle when the Thread's target Jeffrey Yasskin <jyasskin@gmail.com> parents: 45477 diff changeset	479 # 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	480 # 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	481 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	482
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	483 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	484 # 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	485 # 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	486 # 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	487 # 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	488 # 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	489 # __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	490 # 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	491 # 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	492 # 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	493 # __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	494 # 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	495 # 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	496 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	497 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	498 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	499 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	500 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	501 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	502
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 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	504 try:
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	505 self.__ident = _get_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	506 self.__started.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	507 _active_limbo_lock.acquire()
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	508 _active[self.__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	509 del _limbo[self]
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	510 _active_limbo_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	511 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	512 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	513
d0f15977f37f Add settrace() and setprofile() functions to the threading library. Jeremy Hylton <jeremy@alum.mit.edu> parents: 29676 diff changeset	514 if _trace_hook:
d0f15977f37f Add settrace() and setprofile() functions to the threading library. Jeremy Hylton <jeremy@alum.mit.edu> parents: 29676 diff changeset	515 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	516 _sys.settrace(_trace_hook)
d0f15977f37f Add settrace() and setprofile() functions to the threading library. Jeremy Hylton <jeremy@alum.mit.edu> parents: 29676 diff changeset	517 if _profile_hook:
d0f15977f37f Add settrace() and setprofile() functions to the threading library. Jeremy Hylton <jeremy@alum.mit.edu> parents: 29676 diff changeset	518 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	519 _sys.setprofile(_profile_hook)
29686 371092ce5c2b Whitespace normalization. Tim Peters <tim.peters@gmail.com> parents: 29683 diff changeset	520
7949 58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	521 try:
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	522 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	523 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	524 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	525 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	526 except:
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	527 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	528 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	529 # 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	530 # 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	531 # _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	532 # self.
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:
796ccb9082ef threading.Thread objects will now print a traceback for an exception raised Brett Cannon <bcannon@gmail.com> parents: 31629 diff changeset	534 _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	535 (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	536 else:
796ccb9082ef threading.Thread objects will now print a traceback for an exception raised Brett Cannon <bcannon@gmail.com> parents: 31629 diff changeset	537 # 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	538 # 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	539 # 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	540 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	541 try:
796ccb9082ef threading.Thread objects will now print a traceback for an exception raised Brett Cannon <bcannon@gmail.com> parents: 31629 diff changeset	542 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	543 "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	544 " (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	545 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	546 "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	547 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	548 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	549 ' 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	550 (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	551 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	552 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	553 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	554 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	555 # 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	556 # 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	557 finally:
796ccb9082ef threading.Thread objects will now print a traceback for an exception raised Brett Cannon <bcannon@gmail.com> parents: 31629 diff changeset	558 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	559 else:
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	560 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	561 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	562 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	563 # 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	564 # 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	565 # 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	566 # 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	567 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	568 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	569 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	570 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	571 try:
fe7d423474de - Fix Issue #1703448: A joined thread could show up in the Gregory P. Smith <greg@mad-scientist.com> parents: 44869 diff changeset	572 # 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	573 # 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	574 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	575 except:
fe7d423474de - Fix Issue #1703448: A joined thread could show up in the Gregory P. Smith <greg@mad-scientist.com> parents: 44869 diff changeset	576 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	577
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	578 def __stop(self):
44918 685e96d20881 Revert 60189 and restore performance. Raymond Hettinger <python@rcn.com> parents: 44870 diff changeset	579 self.__block.acquire()
685e96d20881 Revert 60189 and restore performance. Raymond Hettinger <python@rcn.com> parents: 44870 diff changeset	580 self.__stopped = True
47598 c349f9fbc704 give the threading API PEP 8 names Benjamin Peterson <benjamin@python.org> parents: 47438 diff changeset	581 self.__block.notify_all()
44918 685e96d20881 Revert 60189 and restore performance. Raymond Hettinger <python@rcn.com> parents: 44870 diff changeset	582 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	583
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	584 def __delete(self):
32778 7af695bc5480 Thread.__delete: Discussion of internal obscurities belongs in comments Tim Peters <tim.peters@gmail.com> parents: 32774 diff changeset	585 "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	586
32778 7af695bc5480 Thread.__delete: Discussion of internal obscurities belongs in comments Tim Peters <tim.peters@gmail.com> parents: 32774 diff changeset	587 # 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	588 #
7af695bc5480 Thread.__delete: Discussion of internal obscurities belongs in comments Tim Peters <tim.peters@gmail.com> parents: 32774 diff changeset	589 # 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	590 # 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	591 # 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	592 # 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	593 # 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	594 # 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	595 #
7af695bc5480 Thread.__delete: Discussion of internal obscurities belongs in comments Tim Peters <tim.peters@gmail.com> parents: 32774 diff changeset	596 # 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	597 # 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	598 # 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	599 # 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	600 # '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	601 # 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	602 #
7af695bc5480 Thread.__delete: Discussion of internal obscurities belongs in comments Tim Peters <tim.peters@gmail.com> parents: 32774 diff changeset	603 # 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	604 # _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	605 # 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	606 # 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	607
44918 685e96d20881 Revert 60189 and restore performance. Raymond Hettinger <python@rcn.com> parents: 44870 diff changeset	608 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	609 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	610 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	611 # 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	612 # 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	613 # 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	614 # 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	615 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	616 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	617 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	618
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	619 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	620 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	621 raise RuntimeError("Thread.__init__() not called")
47598 c349f9fbc704 give the threading API PEP 8 names Benjamin Peterson <benjamin@python.org> parents: 47438 diff changeset	622 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	623 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	624 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	625 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	626
7949 58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	627 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	628 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	629 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	630 self.__block.acquire()
685e96d20881 Revert 60189 and restore performance. Raymond Hettinger <python@rcn.com> parents: 44870 diff changeset	631 try:
35932 b7c6c461a808 Prevent threading.Thread.join() from blocking when a previous call raised an Brett Cannon <bcannon@gmail.com> parents: 35236 diff changeset	632 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	633 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	634 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	635 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	636 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	637 else:
b7c6c461a808 Prevent threading.Thread.join() from blocking when a previous call raised an Brett Cannon <bcannon@gmail.com> parents: 35236 diff changeset	638 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	639 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	640 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	641 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	642 if __debug__:
b7c6c461a808 Prevent threading.Thread.join() from blocking when a previous call raised an Brett Cannon <bcannon@gmail.com> parents: 35236 diff changeset	643 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	644 break
b7c6c461a808 Prevent threading.Thread.join() from blocking when a previous call raised an Brett Cannon <bcannon@gmail.com> parents: 35236 diff changeset	645 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	646 else:
b7c6c461a808 Prevent threading.Thread.join() from blocking when a previous call raised an Brett Cannon <bcannon@gmail.com> parents: 35236 diff changeset	647 if __debug__:
b7c6c461a808 Prevent threading.Thread.join() from blocking when a previous call raised an Brett Cannon <bcannon@gmail.com> parents: 35236 diff changeset	648 self._note("%s.join(): thread stopped", self)
44918 685e96d20881 Revert 60189 and restore performance. Raymond Hettinger <python@rcn.com> parents: 44870 diff changeset	649 finally:
685e96d20881 Revert 60189 and restore performance. Raymond Hettinger <python@rcn.com> parents: 44870 diff changeset	650 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	651
48288 e143a8f35241 backport threading property changes Benjamin Peterson <benjamin@python.org> parents: 48287 diff changeset	652 @property
e143a8f35241 backport threading property changes Benjamin Peterson <benjamin@python.org> parents: 48287 diff changeset	653 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	654 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	655 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	656
48288 e143a8f35241 backport threading property changes Benjamin Peterson <benjamin@python.org> parents: 48287 diff changeset	657 @name.setter
e143a8f35241 backport threading property changes Benjamin Peterson <benjamin@python.org> parents: 48287 diff changeset	658 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	659 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	660 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	661
48287 1d29e53ce2af change threading.getIdent to a property Benjamin Peterson <benjamin@python.org> parents: 48131 diff changeset	662 @property
1d29e53ce2af change threading.getIdent to a property Benjamin Peterson <benjamin@python.org> parents: 48131 diff changeset	663 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	664 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	665 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	666
48942 bc585b4d4606 remove py3k warnings about the threading api; update docs Benjamin Peterson <benjamin@python.org> parents: 48830 diff changeset	667 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	668 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	669 return self.__started.is_set() and not self.__stopped
15873 3dd217fbdd59 Whitespace normalization. Tim Peters <tim.peters@gmail.com> parents: 15586 diff changeset	670
48942 bc585b4d4606 remove py3k warnings about the threading api; update docs Benjamin Peterson <benjamin@python.org> parents: 48830 diff changeset	671 is_alive = isAlive
48295 5c105f9a78e8 add py3k warnings for old threading APIs Benjamin Peterson <benjamin@python.org> parents: 48290 diff changeset	672
48288 e143a8f35241 backport threading property changes Benjamin Peterson <benjamin@python.org> parents: 48287 diff changeset	673 @property
e143a8f35241 backport threading property changes Benjamin Peterson <benjamin@python.org> parents: 48287 diff changeset	674 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	675 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	676 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	677
48288 e143a8f35241 backport threading property changes Benjamin Peterson <benjamin@python.org> parents: 48287 diff changeset	678 @daemon.setter
e143a8f35241 backport threading property changes Benjamin Peterson <benjamin@python.org> parents: 48287 diff changeset	679 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	680 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	681 raise RuntimeError("Thread.__init__() not called")
47598 c349f9fbc704 give the threading API PEP 8 names Benjamin Peterson <benjamin@python.org> parents: 47438 diff changeset	682 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	683 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	684 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	685
48290 9d1856aba9f2 bring back the old API Benjamin Peterson <benjamin@python.org> parents: 48288 diff changeset	686 def isDaemon(self):
9d1856aba9f2 bring back the old API Benjamin Peterson <benjamin@python.org> parents: 48288 diff changeset	687 return self.daemon
9d1856aba9f2 bring back the old API Benjamin Peterson <benjamin@python.org> parents: 48288 diff changeset	688
9d1856aba9f2 bring back the old API Benjamin Peterson <benjamin@python.org> parents: 48288 diff changeset	689 def setDaemon(self, daemonic):
9d1856aba9f2 bring back the old API Benjamin Peterson <benjamin@python.org> parents: 48288 diff changeset	690 self.daemon = daemonic
9d1856aba9f2 bring back the old API Benjamin Peterson <benjamin@python.org> parents: 48288 diff changeset	691
9d1856aba9f2 bring back the old API Benjamin Peterson <benjamin@python.org> parents: 48288 diff changeset	692 def getName(self):
9d1856aba9f2 bring back the old API Benjamin Peterson <benjamin@python.org> parents: 48288 diff changeset	693 return self.name
9d1856aba9f2 bring back the old API Benjamin Peterson <benjamin@python.org> parents: 48288 diff changeset	694
9d1856aba9f2 bring back the old API Benjamin Peterson <benjamin@python.org> parents: 48288 diff changeset	695 def setName(self, name):
9d1856aba9f2 bring back the old API Benjamin Peterson <benjamin@python.org> parents: 48288 diff changeset	696 self.name = name
9d1856aba9f2 bring back the old API Benjamin Peterson <benjamin@python.org> parents: 48288 diff changeset	697
19727 f3036d4e3c22 Patch #428326: New class threading.Timer. Martin v. Löwis <martin@v.loewis.de> parents: 19404 diff changeset	698 # 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	699
f3036d4e3c22 Patch #428326: New class threading.Timer. Martin v. Löwis <martin@v.loewis.de> parents: 19404 diff changeset	700 def Timer(args, *kwargs):
f3036d4e3c22 Patch #428326: New class threading.Timer. Martin v. Löwis <martin@v.loewis.de> parents: 19404 diff changeset	701 return _Timer(args, *kwargs)
f3036d4e3c22 Patch #428326: New class threading.Timer. Martin v. Löwis <martin@v.loewis.de> parents: 19404 diff changeset	702
f3036d4e3c22 Patch #428326: New class threading.Timer. Martin v. Löwis <martin@v.loewis.de> parents: 19404 diff changeset	703 class _Timer(Thread):
f3036d4e3c22 Patch #428326: New class threading.Timer. Martin v. Löwis <martin@v.loewis.de> parents: 19404 diff changeset	704 """Call a function after a specified number of seconds:
19953 0f9df563b65d Whitespace normalization. Tim Peters <tim.peters@gmail.com> parents: 19727 diff changeset	705
19727 f3036d4e3c22 Patch #428326: New class threading.Timer. Martin v. Löwis <martin@v.loewis.de> parents: 19404 diff changeset	706 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	707 t.start()
f3036d4e3c22 Patch #428326: New class threading.Timer. Martin v. Löwis <martin@v.loewis.de> parents: 19404 diff changeset	708 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	709 """
19953 0f9df563b65d Whitespace normalization. Tim Peters <tim.peters@gmail.com> parents: 19727 diff changeset	710
19727 f3036d4e3c22 Patch #428326: New class threading.Timer. Martin v. Löwis <martin@v.loewis.de> parents: 19404 diff changeset	711 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	712 Thread.__init__(self)
f3036d4e3c22 Patch #428326: New class threading.Timer. Martin v. Löwis <martin@v.loewis.de> parents: 19404 diff changeset	713 self.interval = interval
f3036d4e3c22 Patch #428326: New class threading.Timer. Martin v. Löwis <martin@v.loewis.de> parents: 19404 diff changeset	714 self.function = function
f3036d4e3c22 Patch #428326: New class threading.Timer. Martin v. Löwis <martin@v.loewis.de> parents: 19404 diff changeset	715 self.args = args
f3036d4e3c22 Patch #428326: New class threading.Timer. Martin v. Löwis <martin@v.loewis.de> parents: 19404 diff changeset	716 self.kwargs = kwargs
f3036d4e3c22 Patch #428326: New class threading.Timer. Martin v. Löwis <martin@v.loewis.de> parents: 19404 diff changeset	717 self.finished = Event()
19953 0f9df563b65d Whitespace normalization. Tim Peters <tim.peters@gmail.com> parents: 19727 diff changeset	718
19727 f3036d4e3c22 Patch #428326: New class threading.Timer. Martin v. Löwis <martin@v.loewis.de> parents: 19404 diff changeset	719 def cancel(self):
f3036d4e3c22 Patch #428326: New class threading.Timer. Martin v. Löwis <martin@v.loewis.de> parents: 19404 diff changeset	720 """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	721 self.finished.set()
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 run(self):
f3036d4e3c22 Patch #428326: New class threading.Timer. Martin v. Löwis <martin@v.loewis.de> parents: 19404 diff changeset	724 self.finished.wait(self.interval)
47598 c349f9fbc704 give the threading API PEP 8 names Benjamin Peterson <benjamin@python.org> parents: 47438 diff changeset	725 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	726 self.function(self.args, *self.kwargs)
f3036d4e3c22 Patch #428326: New class threading.Timer. Martin v. Löwis <martin@v.loewis.de> parents: 19404 diff changeset	727 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	728
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	729 # 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	730 # 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	731
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	732 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	733
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	734 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	735 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	736 self._Thread__started.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	737 _active_limbo_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	738 _active[_get_ident()] = 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 _active_limbo_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	740
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	741 def _set_daemon(self):
22867 e2f2187c3d2c Partial introduction of bools where appropriate. Guido van Rossum <guido@python.org> parents: 22830 diff changeset	742 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	743
40542 4203f8e6e86a Bug #1566280: Explicitly invoke threading._shutdown from Py_Main, Martin v. Löwis <martin@v.loewis.de> parents: 38794 diff changeset	744 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	745 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	746 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	747 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	748 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	749 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	750 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	751 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	752 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	753 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	754 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	755 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	756
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	757 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	758 for t in enumerate():
48288 e143a8f35241 backport threading property changes Benjamin Peterson <benjamin@python.org> parents: 48287 diff changeset	759 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	760 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	761 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	762
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	763
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	764 # 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	765 # 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	766 # 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	767 # 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	768 # 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	769 # 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	770 # 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	771
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	772 class _DummyThread(Thread):
15873 3dd217fbdd59 Whitespace normalization. Tim Peters <tim.peters@gmail.com> parents: 15586 diff changeset	773
7949 58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	774 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	775 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	776
35f31790c6f9 threading._DummyThread.__init__(): document obscure new code. Tim Peters <tim.peters@gmail.com> parents: 34361 diff changeset	777 # 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	778 # 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	779 # 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	780 del self._Thread__block
34363 35f31790c6f9 threading._DummyThread.__init__(): document obscure new code. Tim Peters <tim.peters@gmail.com> parents: 34361 diff changeset	781
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	782 self._Thread__started.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	783 _active_limbo_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	784 _active[_get_ident()] = self
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	785 _active_limbo_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	786
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	787 def _set_daemon(self):
22867 e2f2187c3d2c Partial introduction of bools where appropriate. Guido van Rossum <guido@python.org> parents: 22830 diff changeset	788 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	789
21981 4e9cc26e03fd SF #515023. Make _DummyThread.join() signature match base class (Thread) Neal Norwitz <nnorwitz@gmail.com> parents: 21589 diff changeset	790 def join(self, timeout=None):
22867 e2f2187c3d2c Partial introduction of bools where appropriate. Guido van Rossum <guido@python.org> parents: 22830 diff changeset	791 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	792
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	793
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	794 # 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	795
48942 bc585b4d4606 remove py3k warnings about the threading api; update docs Benjamin Peterson <benjamin@python.org> parents: 48830 diff changeset	796 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	797 try:
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	798 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	799 except KeyError:
47598 c349f9fbc704 give the threading API PEP 8 names Benjamin Peterson <benjamin@python.org> parents: 47438 diff changeset	800 ##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	801 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	802
48942 bc585b4d4606 remove py3k warnings about the threading api; update docs Benjamin Peterson <benjamin@python.org> parents: 48830 diff changeset	803 current_thread = currentThread
47601 8dc4312a2f75 add aliases to threading module Benjamin Peterson <benjamin@python.org> parents: 47598 diff changeset	804
48942 bc585b4d4606 remove py3k warnings about the threading api; update docs Benjamin Peterson <benjamin@python.org> parents: 48830 diff changeset	805 def activeCount():
7949 58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	806 _active_limbo_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	807 count = len(_active) + len(_limbo)
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	808 _active_limbo_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	809 return count
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	810
48942 bc585b4d4606 remove py3k warnings about the threading api; update docs Benjamin Peterson <benjamin@python.org> parents: 48830 diff changeset	811 active_count = activeCount
47601 8dc4312a2f75 add aliases to threading module Benjamin Peterson <benjamin@python.org> parents: 47598 diff changeset	812
7949 58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	813 def enumerate():
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	814 _active_limbo_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	815 active = _active.values() + _limbo.values()
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	816 _active_limbo_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	817 return active
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	818
38794 f7d23bca599f Patch #1454481: Make thread stack size runtime tunable. Andrew MacIntyre <andymac@bullseye.apana.org.au> parents: 38592 diff changeset	819 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	820
40542 4203f8e6e86a Bug #1566280: Explicitly invoke threading._shutdown from Py_Main, Martin v. Löwis <martin@v.loewis.de> parents: 38794 diff changeset	821 # 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	822 # 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	823 # (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	824
40542 4203f8e6e86a Bug #1566280: Explicitly invoke threading._shutdown from Py_Main, Martin v. Löwis <martin@v.loewis.de> parents: 38794 diff changeset	825 _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	826
32673 97768d87394a Implemented thread-local data as proposed on python-dev: Jim Fulton <jim@zope.com> parents: 32475 diff changeset	827 # 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	828 # 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	829
97768d87394a Implemented thread-local data as proposed on python-dev: Jim Fulton <jim@zope.com> parents: 32475 diff changeset	830 try:
97768d87394a Implemented thread-local data as proposed on python-dev: Jim Fulton <jim@zope.com> parents: 32475 diff changeset	831 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	832 except ImportError:
97768d87394a Implemented thread-local data as proposed on python-dev: Jim Fulton <jim@zope.com> parents: 32475 diff changeset	833 from _threading_local import local
97768d87394a Implemented thread-local data as proposed on python-dev: Jim Fulton <jim@zope.com> parents: 32475 diff changeset	834
7949 58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	835
47985 09beb96ba20d Apply patch for 874900: threading module can deadlock after fork Jesse Noller <jnoller@gmail.com> parents: 47606 diff changeset	836 def _after_fork():
09beb96ba20d Apply patch for 874900: threading module can deadlock after fork Jesse Noller <jnoller@gmail.com> parents: 47606 diff changeset	837 # 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	838 # 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	839 # 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	840
09beb96ba20d Apply patch for 874900: threading module can deadlock after fork Jesse Noller <jnoller@gmail.com> parents: 47606 diff changeset	841 # 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	842 # 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	843 global _active_limbo_lock
09beb96ba20d Apply patch for 874900: threading module can deadlock after fork Jesse Noller <jnoller@gmail.com> parents: 47606 diff changeset	844 _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	845
09beb96ba20d Apply patch for 874900: threading module can deadlock after fork Jesse Noller <jnoller@gmail.com> parents: 47606 diff changeset	846 # 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	847 new_active = {}
09beb96ba20d Apply patch for 874900: threading module can deadlock after fork Jesse Noller <jnoller@gmail.com> parents: 47606 diff changeset	848 current = current_thread()
09beb96ba20d Apply patch for 874900: threading module can deadlock after fork Jesse Noller <jnoller@gmail.com> parents: 47606 diff changeset	849 with _active_limbo_lock:
49059 fda689970b3f Backport relevant part of r66274 (in issue #874900). Antoine Pitrou <solipsis@pitrou.net> parents: 48942 diff changeset	850 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	851 if thread is current:
49059 fda689970b3f Backport relevant part of r66274 (in issue #874900). Antoine Pitrou <solipsis@pitrou.net> parents: 48942 diff changeset	852 # 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	853 # 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	854 ident = _get_ident()
fda689970b3f Backport relevant part of r66274 (in issue #874900). Antoine Pitrou <solipsis@pitrou.net> parents: 48942 diff changeset	855 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	856 new_active[ident] = thread
09beb96ba20d Apply patch for 874900: threading module can deadlock after fork Jesse Noller <jnoller@gmail.com> parents: 47606 diff changeset	857 else:
09beb96ba20d Apply patch for 874900: threading module can deadlock after fork Jesse Noller <jnoller@gmail.com> parents: 47606 diff changeset	858 # 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	859 # 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	860 # 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	861 # we forked.
09beb96ba20d Apply patch for 874900: threading module can deadlock after fork Jesse Noller <jnoller@gmail.com> parents: 47606 diff changeset	862 thread._Thread__stopped = True
09beb96ba20d Apply patch for 874900: threading module can deadlock after fork Jesse Noller <jnoller@gmail.com> parents: 47606 diff changeset	863
09beb96ba20d Apply patch for 874900: threading module can deadlock after fork Jesse Noller <jnoller@gmail.com> parents: 47606 diff changeset	864 _limbo.clear()
09beb96ba20d Apply patch for 874900: threading module can deadlock after fork Jesse Noller <jnoller@gmail.com> parents: 47606 diff changeset	865 _active.clear()
09beb96ba20d Apply patch for 874900: threading module can deadlock after fork Jesse Noller <jnoller@gmail.com> parents: 47606 diff changeset	866 _active.update(new_active)
09beb96ba20d Apply patch for 874900: threading module can deadlock after fork Jesse Noller <jnoller@gmail.com> parents: 47606 diff changeset	867 assert len(_active) == 1
09beb96ba20d Apply patch for 874900: threading module can deadlock after fork Jesse Noller <jnoller@gmail.com> parents: 47606 diff changeset	868
09beb96ba20d Apply patch for 874900: threading module can deadlock after fork Jesse Noller <jnoller@gmail.com> parents: 47606 diff changeset	869
7949 58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	870 # 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	871
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	872 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	873
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	874 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	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 __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	877 _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	878 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	879 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	880 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	881 self.limit = limit
31436 63fa60f2d61c * Move collections.deque() in from the sandbox Raymond Hettinger <python@rcn.com> parents: 30862 diff changeset	882 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	883
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	884 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	885 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	886 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	887 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	888 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	889 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	890 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	891 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	892 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	893 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	894
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	895 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	896 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	897 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	898 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	899 self.rc.wait()
31436 63fa60f2d61c * Move collections.deque() in from the sandbox Raymond Hettinger <python@rcn.com> parents: 30862 diff changeset	900 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	901 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	902 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	903 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	904 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	905
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	906 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	907
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	908 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	909 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	910 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	911 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	912
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	913 def run(self):
8394 93aa08c77e60 Use random instead of whrandom. Guido van Rossum <guido@python.org> parents: 7949 diff changeset	914 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	915 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	916 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	917 counter = counter + 1
48288 e143a8f35241 backport threading property changes Benjamin Peterson <benjamin@python.org> parents: 48287 diff changeset	918 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	919 _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	920
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	921
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	922 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	923
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	924 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	925 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	926 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	927 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	928
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	929 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	930 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	931 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	932 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	933 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	934
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	935 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	936 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	937 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	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 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	940 P = []
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	941 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	942 t = ProducerThread(Q, NI)
48288 e143a8f35241 backport threading property changes Benjamin Peterson <benjamin@python.org> parents: 48287 diff changeset	943 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	944 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	945 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	946 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	947 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	948 _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	949 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	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.join()
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	952 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	953
58d6815af002 New Java-style threading module. The doc strings are in a separate module. Guido van Rossum <guido@python.org> parents: diff changeset	954 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	955 _test()

Mercurial > cpython-lru_cache-weakref

annotate Lib/threading.py @ 51330:ca423008fa4a legacy-trunk