cpython-lru_cache-weakref: Python/thread

annotate Python/thread_pth.h @ 63509:5fd09e410d36 2.6

Merged revisions 83429,83436 via svnmerge from svn+ssh://pythondev@svn.python.org/python/branches/release27-maint ................ r83429 | georg.brandl | 2010-08-01 21:14:56 +0200 (So, 01 Aug 2010) | 37 lines Merged revisions 83352,83356-83358,83362,83366,83368-83369 via svnmerge from svn+ssh://pythondev@svn.python.org/python/branches/py3k ........ r83352 | georg.brandl | 2010-07-31 20:11:07 +0200 (Sa, 31 Jul 2010) | 1 line #9440: Remove borderline test case that fails based on unpredictable conditions such as compiler flags. ........ r83356 | georg.brandl | 2010-07-31 21:29:15 +0200 (Sa, 31 Jul 2010) | 1 line Remove trailing whitespace. ........ r83357 | georg.brandl | 2010-07-31 21:59:55 +0200 (Sa, 31 Jul 2010) | 1 line #5778: document that sys.version can contain a newline. ........ r83358 | georg.brandl | 2010-07-31 22:05:31 +0200 (Sa, 31 Jul 2010) | 1 line #9442: do not document a specific format for sys.version; rather refer to version_info and the platform module. ........ r83362 | georg.brandl | 2010-07-31 23:12:15 +0200 (Sa, 31 Jul 2010) | 1 line #8910: add a file explaining why Lib/test/data is there. ........ r83366 | georg.brandl | 2010-07-31 23:26:40 +0200 (Sa, 31 Jul 2010) | 1 line There always is a False and True now. ........ r83368 | georg.brandl | 2010-07-31 23:40:15 +0200 (Sa, 31 Jul 2010) | 1 line #7909: the prefixes \\.\ and \\?\ indicate special Windows paths, do not try to manipulate them. See http://msdn.microsoft.com/en-us/library/aa365247%28VS.85%29.aspx for details. ........ r83369 | georg.brandl | 2010-07-31 23:41:42 +0200 (Sa, 31 Jul 2010) | 1 line Fix "Berkeley" name. ........ ................ r83436 | georg.brandl | 2010-08-01 21:33:15 +0200 (So, 01 Aug 2010) | 42 lines Merged revisions 83259,83261,83264-83265,83268-83269,83271-83272,83281 via svnmerge from svn+ssh://pythondev@svn.python.org/python/branches/py3k ........ r83259 | georg.brandl | 2010-07-30 09:03:39 +0200 (Fr, 30 Jul 2010) | 1 line Clarification. ........ r83261 | georg.brandl | 2010-07-30 09:21:26 +0200 (Fr, 30 Jul 2010) | 1 line #9230: allow Pdb.checkline() to be called without a current frame, for setting breakpoints before starting debugging. ........ r83264 | georg.brandl | 2010-07-30 10:45:26 +0200 (Fr, 30 Jul 2010) | 1 line Document the "jump" command in pdb.__doc__, and add a version tag for "until X". ........ r83265 | georg.brandl | 2010-07-30 10:54:49 +0200 (Fr, 30 Jul 2010) | 1 line #8015: fix crash when entering an empty line for breakpoint commands. Also restore environment properly when an exception occurs during the definition of commands. ........ r83268 | georg.brandl | 2010-07-30 11:23:23 +0200 (Fr, 30 Jul 2010) | 2 lines Issue #8048: Prevent doctests from failing when sys.displayhook has been reassigned. ........ r83269 | georg.brandl | 2010-07-30 11:43:00 +0200 (Fr, 30 Jul 2010) | 1 line #6719: In pdb, do not stop somewhere in the encodings machinery if the source file to be debugged is in a non-builtin encoding. ........ r83271 | georg.brandl | 2010-07-30 11:59:28 +0200 (Fr, 30 Jul 2010) | 1 line #5727: Restore the ability to use readline when calling into pdb in doctests. ........ r83272 | georg.brandl | 2010-07-30 12:29:19 +0200 (Fr, 30 Jul 2010) | 1 line #5294: Fix the behavior of pdb "continue" command when called in the top-level debugged frame. ........ r83281 | georg.brandl | 2010-07-30 15:36:43 +0200 (Fr, 30 Jul 2010) | 1 line Add myself for pdb. ........ ................

author	Georg Brandl <georg@python.org>
date	Sun, 01 Aug 2010 22:10:15 +0000
parents	e38335d4df91
children	b36cb4602e21

rev	line source
12611 b320cf3a98b9 Andy Dustman: add GNU pth user-space thread support. Guido van Rossum <guido@python.org> parents: diff changeset	1
b320cf3a98b9 Andy Dustman: add GNU pth user-space thread support. Guido van Rossum <guido@python.org> parents: diff changeset	2 /* GNU pth threads interface
b320cf3a98b9 Andy Dustman: add GNU pth user-space thread support. Guido van Rossum <guido@python.org> parents: diff changeset	3 http://www.gnu.org/software/pth
b320cf3a98b9 Andy Dustman: add GNU pth user-space thread support. Guido van Rossum <guido@python.org> parents: diff changeset	4 2000-05-03 Andy Dustman <andy@dustman.net>
b320cf3a98b9 Andy Dustman: add GNU pth user-space thread support. Guido van Rossum <guido@python.org> parents: diff changeset	5
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 30466 diff changeset	6 Adapted from Posix threads interface
12611 b320cf3a98b9 Andy Dustman: add GNU pth user-space thread support. Guido van Rossum <guido@python.org> parents: diff changeset	7 12 May 1997 -- david arnold <davida@pobox.com>
b320cf3a98b9 Andy Dustman: add GNU pth user-space thread support. Guido van Rossum <guido@python.org> parents: diff changeset	8 */
b320cf3a98b9 Andy Dustman: add GNU pth user-space thread support. Guido van Rossum <guido@python.org> parents: diff changeset	9
b320cf3a98b9 Andy Dustman: add GNU pth user-space thread support. Guido van Rossum <guido@python.org> parents: diff changeset	10 #include <stdlib.h>
b320cf3a98b9 Andy Dustman: add GNU pth user-space thread support. Guido van Rossum <guido@python.org> parents: diff changeset	11 #include <string.h>
b320cf3a98b9 Andy Dustman: add GNU pth user-space thread support. Guido van Rossum <guido@python.org> parents: diff changeset	12 #include <pth.h>
b320cf3a98b9 Andy Dustman: add GNU pth user-space thread support. Guido van Rossum <guido@python.org> parents: diff changeset	13
b320cf3a98b9 Andy Dustman: add GNU pth user-space thread support. Guido van Rossum <guido@python.org> parents: diff changeset	14 /* A pth mutex isn't sufficient to model the Python lock type
b320cf3a98b9 Andy Dustman: add GNU pth user-space thread support. Guido van Rossum <guido@python.org> parents: diff changeset	15 * because pth mutexes can be acquired multiple times by the
b320cf3a98b9 Andy Dustman: add GNU pth user-space thread support. Guido van Rossum <guido@python.org> parents: diff changeset	16 * same thread.
b320cf3a98b9 Andy Dustman: add GNU pth user-space thread support. Guido van Rossum <guido@python.org> parents: diff changeset	17 *
b320cf3a98b9 Andy Dustman: add GNU pth user-space thread support. Guido van Rossum <guido@python.org> parents: diff changeset	18 * The pth_lock struct implements a Python lock as a "locked?" bit
b320cf3a98b9 Andy Dustman: add GNU pth user-space thread support. Guido van Rossum <guido@python.org> parents: diff changeset	19 * and a <condition, mutex> pair. In general, if the bit can be acquired
b320cf3a98b9 Andy Dustman: add GNU pth user-space thread support. Guido van Rossum <guido@python.org> parents: diff changeset	20 * instantly, it is, else the pair is used to block the thread until the
b320cf3a98b9 Andy Dustman: add GNU pth user-space thread support. Guido van Rossum <guido@python.org> parents: diff changeset	21 * bit is cleared.
b320cf3a98b9 Andy Dustman: add GNU pth user-space thread support. Guido van Rossum <guido@python.org> parents: diff changeset	22 */
b320cf3a98b9 Andy Dustman: add GNU pth user-space thread support. Guido van Rossum <guido@python.org> parents: diff changeset	23
b320cf3a98b9 Andy Dustman: add GNU pth user-space thread support. Guido van Rossum <guido@python.org> parents: diff changeset	24 typedef struct {
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 30466 diff changeset	25 char locked; /* 0=unlocked, 1=locked */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 30466 diff changeset	26 /* a <cond, mutex> pair to handle an acquire of a locked lock */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 30466 diff changeset	27 pth_cond_t lock_released;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 30466 diff changeset	28 pth_mutex_t mut;
12611 b320cf3a98b9 Andy Dustman: add GNU pth user-space thread support. Guido van Rossum <guido@python.org> parents: diff changeset	29 } pth_lock;
b320cf3a98b9 Andy Dustman: add GNU pth user-space thread support. Guido van Rossum <guido@python.org> parents: diff changeset	30
b320cf3a98b9 Andy Dustman: add GNU pth user-space thread support. Guido van Rossum <guido@python.org> parents: diff changeset	31 #define CHECK_STATUS(name) if (status == -1) { printf("%d ", status); perror(name); error = 1; }
b320cf3a98b9 Andy Dustman: add GNU pth user-space thread support. Guido van Rossum <guido@python.org> parents: diff changeset	32
30466 1a817694ecbd Patch #805613: Fix usage of the PTH library. Martin v. Löwis <martin@v.loewis.de> parents: 21766 diff changeset	33 pth_attr_t PyThread_attr;
1a817694ecbd Patch #805613: Fix usage of the PTH library. Martin v. Löwis <martin@v.loewis.de> parents: 21766 diff changeset	34
12611 b320cf3a98b9 Andy Dustman: add GNU pth user-space thread support. Guido van Rossum <guido@python.org> parents: diff changeset	35 /*
b320cf3a98b9 Andy Dustman: add GNU pth user-space thread support. Guido van Rossum <guido@python.org> parents: diff changeset	36 * Initialization.
b320cf3a98b9 Andy Dustman: add GNU pth user-space thread support. Guido van Rossum <guido@python.org> parents: diff changeset	37 */
b320cf3a98b9 Andy Dustman: add GNU pth user-space thread support. Guido van Rossum <guido@python.org> parents: diff changeset	38
13658 f79434ee41fa Mass ANSIfication of function definitions. Doesn't cover all 'extern' Thomas Wouters <thomas@python.org> parents: 13256 diff changeset	39 static void PyThread__init_thread(void)
12611 b320cf3a98b9 Andy Dustman: add GNU pth user-space thread support. Guido van Rossum <guido@python.org> parents: diff changeset	40 {
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 30466 diff changeset	41 pth_init();
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 30466 diff changeset	42 PyThread_attr = pth_attr_new();
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 30466 diff changeset	43 pth_attr_set(PyThread_attr, PTH_ATTR_STACK_SIZE, 1<<18);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 30466 diff changeset	44 pth_attr_set(PyThread_attr, PTH_ATTR_JOINABLE, FALSE);
12611 b320cf3a98b9 Andy Dustman: add GNU pth user-space thread support. Guido van Rossum <guido@python.org> parents: diff changeset	45 }
b320cf3a98b9 Andy Dustman: add GNU pth user-space thread support. Guido van Rossum <guido@python.org> parents: diff changeset	46
b320cf3a98b9 Andy Dustman: add GNU pth user-space thread support. Guido van Rossum <guido@python.org> parents: diff changeset	47 /*
b320cf3a98b9 Andy Dustman: add GNU pth user-space thread support. Guido van Rossum <guido@python.org> parents: diff changeset	48 * Thread support.
b320cf3a98b9 Andy Dustman: add GNU pth user-space thread support. Guido van Rossum <guido@python.org> parents: diff changeset	49 */
b320cf3a98b9 Andy Dustman: add GNU pth user-space thread support. Guido van Rossum <guido@python.org> parents: diff changeset	50
b320cf3a98b9 Andy Dustman: add GNU pth user-space thread support. Guido van Rossum <guido@python.org> parents: diff changeset	51
20468 ebfd87e87884 Partial patch from SF #452266, by Jason Petrone. Guido van Rossum <guido@python.org> parents: 15187 diff changeset	52 long PyThread_start_new_thread(void (func)(void ), void *arg)
12611 b320cf3a98b9 Andy Dustman: add GNU pth user-space thread support. Guido van Rossum <guido@python.org> parents: diff changeset	53 {
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 30466 diff changeset	54 pth_t th;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 30466 diff changeset	55 dprintf(("PyThread_start_new_thread called\n"));
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 30466 diff changeset	56 if (!initialized)
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 30466 diff changeset	57 PyThread_init_thread();
12611 b320cf3a98b9 Andy Dustman: add GNU pth user-space thread support. Guido van Rossum <guido@python.org> parents: diff changeset	58
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 30466 diff changeset	59 th = pth_spawn(PyThread_attr,
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 30466 diff changeset	60 (void* ()(void ))func,
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 30466 diff changeset	61 (void *)arg
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 30466 diff changeset	62 );
12611 b320cf3a98b9 Andy Dustman: add GNU pth user-space thread support. Guido van Rossum <guido@python.org> parents: diff changeset	63
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 30466 diff changeset	64 return th;
12611 b320cf3a98b9 Andy Dustman: add GNU pth user-space thread support. Guido van Rossum <guido@python.org> parents: diff changeset	65 }
b320cf3a98b9 Andy Dustman: add GNU pth user-space thread support. Guido van Rossum <guido@python.org> parents: diff changeset	66
13658 f79434ee41fa Mass ANSIfication of function definitions. Doesn't cover all 'extern' Thomas Wouters <thomas@python.org> parents: 13256 diff changeset	67 long PyThread_get_thread_ident(void)
12611 b320cf3a98b9 Andy Dustman: add GNU pth user-space thread support. Guido van Rossum <guido@python.org> parents: diff changeset	68 {
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 30466 diff changeset	69 volatile pth_t threadid;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 30466 diff changeset	70 if (!initialized)
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 30466 diff changeset	71 PyThread_init_thread();
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 30466 diff changeset	72 /* Jump through some hoops for Alpha OSF/1 */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 30466 diff changeset	73 threadid = pth_self();
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 30466 diff changeset	74 return (long) (long ) &threadid;
12611 b320cf3a98b9 Andy Dustman: add GNU pth user-space thread support. Guido van Rossum <guido@python.org> parents: diff changeset	75 }
b320cf3a98b9 Andy Dustman: add GNU pth user-space thread support. Guido van Rossum <guido@python.org> parents: diff changeset	76
13658 f79434ee41fa Mass ANSIfication of function definitions. Doesn't cover all 'extern' Thomas Wouters <thomas@python.org> parents: 13256 diff changeset	77 static void do_PyThread_exit_thread(int no_cleanup)
12611 b320cf3a98b9 Andy Dustman: add GNU pth user-space thread support. Guido van Rossum <guido@python.org> parents: diff changeset	78 {
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 30466 diff changeset	79 dprintf(("PyThread_exit_thread called\n"));
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 30466 diff changeset	80 if (!initialized) {
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 30466 diff changeset	81 if (no_cleanup)
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 30466 diff changeset	82 _exit(0);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 30466 diff changeset	83 else
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 30466 diff changeset	84 exit(0);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 30466 diff changeset	85 }
12611 b320cf3a98b9 Andy Dustman: add GNU pth user-space thread support. Guido van Rossum <guido@python.org> parents: diff changeset	86 }
b320cf3a98b9 Andy Dustman: add GNU pth user-space thread support. Guido van Rossum <guido@python.org> parents: diff changeset	87
13658 f79434ee41fa Mass ANSIfication of function definitions. Doesn't cover all 'extern' Thomas Wouters <thomas@python.org> parents: 13256 diff changeset	88 void PyThread_exit_thread(void)
12611 b320cf3a98b9 Andy Dustman: add GNU pth user-space thread support. Guido van Rossum <guido@python.org> parents: diff changeset	89 {
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 30466 diff changeset	90 do_PyThread_exit_thread(0);
12611 b320cf3a98b9 Andy Dustman: add GNU pth user-space thread support. Guido van Rossum <guido@python.org> parents: diff changeset	91 }
b320cf3a98b9 Andy Dustman: add GNU pth user-space thread support. Guido van Rossum <guido@python.org> parents: diff changeset	92
13658 f79434ee41fa Mass ANSIfication of function definitions. Doesn't cover all 'extern' Thomas Wouters <thomas@python.org> parents: 13256 diff changeset	93 void PyThread__exit_thread(void)
12611 b320cf3a98b9 Andy Dustman: add GNU pth user-space thread support. Guido van Rossum <guido@python.org> parents: diff changeset	94 {
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 30466 diff changeset	95 do_PyThread_exit_thread(1);
12611 b320cf3a98b9 Andy Dustman: add GNU pth user-space thread support. Guido van Rossum <guido@python.org> parents: diff changeset	96 }
b320cf3a98b9 Andy Dustman: add GNU pth user-space thread support. Guido van Rossum <guido@python.org> parents: diff changeset	97
b320cf3a98b9 Andy Dustman: add GNU pth user-space thread support. Guido van Rossum <guido@python.org> parents: diff changeset	98 #ifndef NO_EXIT_PROG
13658 f79434ee41fa Mass ANSIfication of function definitions. Doesn't cover all 'extern' Thomas Wouters <thomas@python.org> parents: 13256 diff changeset	99 static void do_PyThread_exit_prog(int status, int no_cleanup)
12611 b320cf3a98b9 Andy Dustman: add GNU pth user-space thread support. Guido van Rossum <guido@python.org> parents: diff changeset	100 {
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 30466 diff changeset	101 dprintf(("PyThread_exit_prog(%d) called\n", status));
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 30466 diff changeset	102 if (!initialized)
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 30466 diff changeset	103 if (no_cleanup)
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 30466 diff changeset	104 _exit(status);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 30466 diff changeset	105 else
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 30466 diff changeset	106 exit(status);
12611 b320cf3a98b9 Andy Dustman: add GNU pth user-space thread support. Guido van Rossum <guido@python.org> parents: diff changeset	107 }
b320cf3a98b9 Andy Dustman: add GNU pth user-space thread support. Guido van Rossum <guido@python.org> parents: diff changeset	108
13658 f79434ee41fa Mass ANSIfication of function definitions. Doesn't cover all 'extern' Thomas Wouters <thomas@python.org> parents: 13256 diff changeset	109 void PyThread_exit_prog(int status)
12611 b320cf3a98b9 Andy Dustman: add GNU pth user-space thread support. Guido van Rossum <guido@python.org> parents: diff changeset	110 {
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 30466 diff changeset	111 do_PyThread_exit_prog(status, 0);
12611 b320cf3a98b9 Andy Dustman: add GNU pth user-space thread support. Guido van Rossum <guido@python.org> parents: diff changeset	112 }
b320cf3a98b9 Andy Dustman: add GNU pth user-space thread support. Guido van Rossum <guido@python.org> parents: diff changeset	113
13658 f79434ee41fa Mass ANSIfication of function definitions. Doesn't cover all 'extern' Thomas Wouters <thomas@python.org> parents: 13256 diff changeset	114 void PyThread__exit_prog(int status)
12611 b320cf3a98b9 Andy Dustman: add GNU pth user-space thread support. Guido van Rossum <guido@python.org> parents: diff changeset	115 {
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 30466 diff changeset	116 do_PyThread_exit_prog(status, 1);
12611 b320cf3a98b9 Andy Dustman: add GNU pth user-space thread support. Guido van Rossum <guido@python.org> parents: diff changeset	117 }
b320cf3a98b9 Andy Dustman: add GNU pth user-space thread support. Guido van Rossum <guido@python.org> parents: diff changeset	118 #endif /* NO_EXIT_PROG */
b320cf3a98b9 Andy Dustman: add GNU pth user-space thread support. Guido van Rossum <guido@python.org> parents: diff changeset	119
b320cf3a98b9 Andy Dustman: add GNU pth user-space thread support. Guido van Rossum <guido@python.org> parents: diff changeset	120 /*
b320cf3a98b9 Andy Dustman: add GNU pth user-space thread support. Guido van Rossum <guido@python.org> parents: diff changeset	121 * Lock support.
b320cf3a98b9 Andy Dustman: add GNU pth user-space thread support. Guido van Rossum <guido@python.org> parents: diff changeset	122 */
13658 f79434ee41fa Mass ANSIfication of function definitions. Doesn't cover all 'extern' Thomas Wouters <thomas@python.org> parents: 13256 diff changeset	123 PyThread_type_lock PyThread_allocate_lock(void)
12611 b320cf3a98b9 Andy Dustman: add GNU pth user-space thread support. Guido van Rossum <guido@python.org> parents: diff changeset	124 {
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 30466 diff changeset	125 pth_lock *lock;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 30466 diff changeset	126 int status, error = 0;
12611 b320cf3a98b9 Andy Dustman: add GNU pth user-space thread support. Guido van Rossum <guido@python.org> parents: diff changeset	127
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 30466 diff changeset	128 dprintf(("PyThread_allocate_lock called\n"));
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 30466 diff changeset	129 if (!initialized)
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 30466 diff changeset	130 PyThread_init_thread();
12611 b320cf3a98b9 Andy Dustman: add GNU pth user-space thread support. Guido van Rossum <guido@python.org> parents: diff changeset	131
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 30466 diff changeset	132 lock = (pth_lock *) malloc(sizeof(pth_lock));
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 30466 diff changeset	133 memset((void *)lock, '\0', sizeof(pth_lock));
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 30466 diff changeset	134 if (lock) {
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 30466 diff changeset	135 lock->locked = 0;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 30466 diff changeset	136 status = pth_mutex_init(&lock->mut);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 30466 diff changeset	137 CHECK_STATUS("pth_mutex_init");
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 30466 diff changeset	138 status = pth_cond_init(&lock->lock_released);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 30466 diff changeset	139 CHECK_STATUS("pth_cond_init");
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 30466 diff changeset	140 if (error) {
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 30466 diff changeset	141 free((void *)lock);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 30466 diff changeset	142 lock = NULL;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 30466 diff changeset	143 }
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 30466 diff changeset	144 }
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 30466 diff changeset	145 dprintf(("PyThread_allocate_lock() -> %p\n", lock));
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 30466 diff changeset	146 return (PyThread_type_lock) lock;
12611 b320cf3a98b9 Andy Dustman: add GNU pth user-space thread support. Guido van Rossum <guido@python.org> parents: diff changeset	147 }
b320cf3a98b9 Andy Dustman: add GNU pth user-space thread support. Guido van Rossum <guido@python.org> parents: diff changeset	148
13658 f79434ee41fa Mass ANSIfication of function definitions. Doesn't cover all 'extern' Thomas Wouters <thomas@python.org> parents: 13256 diff changeset	149 void PyThread_free_lock(PyThread_type_lock lock)
12611 b320cf3a98b9 Andy Dustman: add GNU pth user-space thread support. Guido van Rossum <guido@python.org> parents: diff changeset	150 {
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 30466 diff changeset	151 pth_lock thelock = (pth_lock )lock;
12611 b320cf3a98b9 Andy Dustman: add GNU pth user-space thread support. Guido van Rossum <guido@python.org> parents: diff changeset	152
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 30466 diff changeset	153 dprintf(("PyThread_free_lock(%p) called\n", lock));
12611 b320cf3a98b9 Andy Dustman: add GNU pth user-space thread support. Guido van Rossum <guido@python.org> parents: diff changeset	154
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 30466 diff changeset	155 free((void *)thelock);
12611 b320cf3a98b9 Andy Dustman: add GNU pth user-space thread support. Guido van Rossum <guido@python.org> parents: diff changeset	156 }
b320cf3a98b9 Andy Dustman: add GNU pth user-space thread support. Guido van Rossum <guido@python.org> parents: diff changeset	157
13658 f79434ee41fa Mass ANSIfication of function definitions. Doesn't cover all 'extern' Thomas Wouters <thomas@python.org> parents: 13256 diff changeset	158 int PyThread_acquire_lock(PyThread_type_lock lock, int waitflag)
12611 b320cf3a98b9 Andy Dustman: add GNU pth user-space thread support. Guido van Rossum <guido@python.org> parents: diff changeset	159 {
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 30466 diff changeset	160 int success;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 30466 diff changeset	161 pth_lock thelock = (pth_lock )lock;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 30466 diff changeset	162 int status, error = 0;
12611 b320cf3a98b9 Andy Dustman: add GNU pth user-space thread support. Guido van Rossum <guido@python.org> parents: diff changeset	163
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 30466 diff changeset	164 dprintf(("PyThread_acquire_lock(%p, %d) called\n", lock, waitflag));
12611 b320cf3a98b9 Andy Dustman: add GNU pth user-space thread support. Guido van Rossum <guido@python.org> parents: diff changeset	165
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 30466 diff changeset	166 status = pth_mutex_acquire(&thelock->mut, !waitflag, NULL);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 30466 diff changeset	167 CHECK_STATUS("pth_mutex_acquire[1]");
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 30466 diff changeset	168 success = thelock->locked == 0;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 30466 diff changeset	169 if (success) thelock->locked = 1;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 30466 diff changeset	170 status = pth_mutex_release( &thelock->mut );
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 30466 diff changeset	171 CHECK_STATUS("pth_mutex_release[1]");
12611 b320cf3a98b9 Andy Dustman: add GNU pth user-space thread support. Guido van Rossum <guido@python.org> parents: diff changeset	172
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 30466 diff changeset	173 if ( !success && waitflag ) {
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 30466 diff changeset	174 /* continue trying until we get the lock */
12611 b320cf3a98b9 Andy Dustman: add GNU pth user-space thread support. Guido van Rossum <guido@python.org> parents: diff changeset	175
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 30466 diff changeset	176 /* mut must be locked by me -- part of the condition
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 30466 diff changeset	177 * protocol */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 30466 diff changeset	178 status = pth_mutex_acquire( &thelock->mut, !waitflag, NULL );
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 30466 diff changeset	179 CHECK_STATUS("pth_mutex_acquire[2]");
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 30466 diff changeset	180 while ( thelock->locked ) {
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 30466 diff changeset	181 status = pth_cond_await(&thelock->lock_released,
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 30466 diff changeset	182 &thelock->mut, NULL);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 30466 diff changeset	183 CHECK_STATUS("pth_cond_await");
12611 b320cf3a98b9 Andy Dustman: add GNU pth user-space thread support. Guido van Rossum <guido@python.org> parents: diff changeset	184 }
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 30466 diff changeset	185 thelock->locked = 1;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 30466 diff changeset	186 status = pth_mutex_release( &thelock->mut );
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 30466 diff changeset	187 CHECK_STATUS("pth_mutex_release[2]");
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 30466 diff changeset	188 success = 1;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 30466 diff changeset	189 }
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 30466 diff changeset	190 if (error) success = 0;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 30466 diff changeset	191 dprintf(("PyThread_acquire_lock(%p, %d) -> %d\n", lock, waitflag, success));
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 30466 diff changeset	192 return success;
12611 b320cf3a98b9 Andy Dustman: add GNU pth user-space thread support. Guido van Rossum <guido@python.org> parents: diff changeset	193 }
b320cf3a98b9 Andy Dustman: add GNU pth user-space thread support. Guido van Rossum <guido@python.org> parents: diff changeset	194
13658 f79434ee41fa Mass ANSIfication of function definitions. Doesn't cover all 'extern' Thomas Wouters <thomas@python.org> parents: 13256 diff changeset	195 void PyThread_release_lock(PyThread_type_lock lock)
12611 b320cf3a98b9 Andy Dustman: add GNU pth user-space thread support. Guido van Rossum <guido@python.org> parents: diff changeset	196 {
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 30466 diff changeset	197 pth_lock thelock = (pth_lock )lock;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 30466 diff changeset	198 int status, error = 0;
12611 b320cf3a98b9 Andy Dustman: add GNU pth user-space thread support. Guido van Rossum <guido@python.org> parents: diff changeset	199
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 30466 diff changeset	200 dprintf(("PyThread_release_lock(%p) called\n", lock));
12611 b320cf3a98b9 Andy Dustman: add GNU pth user-space thread support. Guido van Rossum <guido@python.org> parents: diff changeset	201
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 30466 diff changeset	202 status = pth_mutex_acquire( &thelock->mut, 0, NULL );
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 30466 diff changeset	203 CHECK_STATUS("pth_mutex_acquire[3]");
12611 b320cf3a98b9 Andy Dustman: add GNU pth user-space thread support. Guido van Rossum <guido@python.org> parents: diff changeset	204
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 30466 diff changeset	205 thelock->locked = 0;
12611 b320cf3a98b9 Andy Dustman: add GNU pth user-space thread support. Guido van Rossum <guido@python.org> parents: diff changeset	206
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 30466 diff changeset	207 status = pth_mutex_release( &thelock->mut );
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 30466 diff changeset	208 CHECK_STATUS("pth_mutex_release[3]");
12611 b320cf3a98b9 Andy Dustman: add GNU pth user-space thread support. Guido van Rossum <guido@python.org> parents: diff changeset	209
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 30466 diff changeset	210 /* wake up someone (anyone, if any) waiting on the lock */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 30466 diff changeset	211 status = pth_cond_notify( &thelock->lock_released, 0 );
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 30466 diff changeset	212 CHECK_STATUS("pth_cond_notify");
12611 b320cf3a98b9 Andy Dustman: add GNU pth user-space thread support. Guido van Rossum <guido@python.org> parents: diff changeset	213 }

Mercurial > cpython-lru_cache-weakref

annotate Python/thread_pth.h @ 63509:5fd09e410d36 2.6