cpython-lru_cache-weakref: Python/thread

annotate Python/thread_pthread.h @ 69888:8752a81ada2d

faulthandler: dump all threads by default * Set the default value of all_threads arguments to True * Py_FatalError() dumps all threads, instead of only the current thread Dump only the current thread is not reliable. In some cases, Python is unable to retrieve the state of the current thread and so is unable to dump the traceback. faulthandler keeps a reference to the interpreter and so is always able to dump the traceback of all threads.

author	Victor Stinner <victor.stinner@haypocalc.com>
date	Sat, 07 May 2011 12:43:00 +0200
parents	c892b0321d23
children	8220f68f1229

rev	line source
1628 a9dd2e1ea5c9 Split thread.c into a number of system-specific files. Guido van Rossum <guido@python.org> parents: diff changeset	1
3663 07164d30429d Got rid of florida hack and made it work with Solaris 2.5 pthreads. Guido van Rossum <guido@python.org> parents: 2097 diff changeset	2 /* Posix threads interface */
1628 a9dd2e1ea5c9 Split thread.c into a number of system-specific files. Guido van Rossum <guido@python.org> parents: diff changeset	3
3663 07164d30429d Got rid of florida hack and made it work with Solaris 2.5 pthreads. Guido van Rossum <guido@python.org> parents: 2097 diff changeset	4 #include <stdlib.h>
9290 2340f615da8f BSDI specific patches, inspired by Nigel Head and otto@mail.olympus.net. Guido van Rossum <guido@python.org> parents: 9079 diff changeset	5 #include <string.h>
25545 3731be28e1a3 Patch #618347: Work around Solaris 2.6 pthread.h bug. Will backport to 2.2. Martin v. Löwis <martin@v.loewis.de> parents: 22341 diff changeset	6 #if defined(__APPLE__) \|\| defined(HAVE_PTHREAD_DESTRUCTOR)
21724 884e57bf3ada Workaround for what is probably a problem in Apple's gcc: <pthread.h> fails Jack Jansen <jack.jansen@cwi.nl> parents: 20922 diff changeset	7 #define destructor xxdestructor
884e57bf3ada Workaround for what is probably a problem in Apple's gcc: <pthread.h> fails Jack Jansen <jack.jansen@cwi.nl> parents: 20922 diff changeset	8 #endif
3663 07164d30429d Got rid of florida hack and made it work with Solaris 2.5 pthreads. Guido van Rossum <guido@python.org> parents: 2097 diff changeset	9 #include <pthread.h>
25545 3731be28e1a3 Patch #618347: Work around Solaris 2.6 pthread.h bug. Will backport to 2.2. Martin v. Löwis <martin@v.loewis.de> parents: 22341 diff changeset	10 #if defined(__APPLE__) \|\| defined(HAVE_PTHREAD_DESTRUCTOR)
21724 884e57bf3ada Workaround for what is probably a problem in Apple's gcc: <pthread.h> fails Jack Jansen <jack.jansen@cwi.nl> parents: 20922 diff changeset	11 #undef destructor
884e57bf3ada Workaround for what is probably a problem in Apple's gcc: <pthread.h> fails Jack Jansen <jack.jansen@cwi.nl> parents: 20922 diff changeset	12 #endif
20398 c9a212329da6 Add SF patch #468347 -- mask signals for non-main pthreads, by Jason Lowe: Guido van Rossum <guido@python.org> parents: 19826 diff changeset	13 #include <signal.h>
22341 2548e2f323fa Document that _POSIX_SEMAPHORES is predefined. Martin v. Löwis <martin@v.loewis.de> parents: 22339 diff changeset	14
39442 654c380cf8b9 Merged revisions 46753-51188 via svnmerge from Thomas Wouters <thomas@python.org> parents: 37879 diff changeset	15 /* The POSIX spec requires that use of pthread_attr_setstacksize
654c380cf8b9 Merged revisions 46753-51188 via svnmerge from Thomas Wouters <thomas@python.org> parents: 37879 diff changeset	16 be conditional on _POSIX_THREAD_ATTR_STACKSIZE being defined. */
654c380cf8b9 Merged revisions 46753-51188 via svnmerge from Thomas Wouters <thomas@python.org> parents: 37879 diff changeset	17 #ifdef _POSIX_THREAD_ATTR_STACKSIZE
654c380cf8b9 Merged revisions 46753-51188 via svnmerge from Thomas Wouters <thomas@python.org> parents: 37879 diff changeset	18 #ifndef THREAD_STACK_SIZE
61467 f197407bdba2 Recorded merge of revisions 81032 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 39442 diff changeset	19 #define THREAD_STACK_SIZE 0 /* use default stack size */
39442 654c380cf8b9 Merged revisions 46753-51188 via svnmerge from Thomas Wouters <thomas@python.org> parents: 37879 diff changeset	20 #endif
654c380cf8b9 Merged revisions 46753-51188 via svnmerge from Thomas Wouters <thomas@python.org> parents: 37879 diff changeset	21 /* for safety, ensure a viable minimum stacksize */
61467 f197407bdba2 Recorded merge of revisions 81032 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 39442 diff changeset	22 #define THREAD_STACK_MIN 0x8000 /* 32kB */
39442 654c380cf8b9 Merged revisions 46753-51188 via svnmerge from Thomas Wouters <thomas@python.org> parents: 37879 diff changeset	23 #else /* !_POSIX_THREAD_ATTR_STACKSIZE */
654c380cf8b9 Merged revisions 46753-51188 via svnmerge from Thomas Wouters <thomas@python.org> parents: 37879 diff changeset	24 #ifdef THREAD_STACK_SIZE
654c380cf8b9 Merged revisions 46753-51188 via svnmerge from Thomas Wouters <thomas@python.org> parents: 37879 diff changeset	25 #error "THREAD_STACK_SIZE defined but _POSIX_THREAD_ATTR_STACKSIZE undefined"
654c380cf8b9 Merged revisions 46753-51188 via svnmerge from Thomas Wouters <thomas@python.org> parents: 37879 diff changeset	26 #endif
654c380cf8b9 Merged revisions 46753-51188 via svnmerge from Thomas Wouters <thomas@python.org> parents: 37879 diff changeset	27 #endif
654c380cf8b9 Merged revisions 46753-51188 via svnmerge from Thomas Wouters <thomas@python.org> parents: 37879 diff changeset	28
22341 2548e2f323fa Document that _POSIX_SEMAPHORES is predefined. Martin v. Löwis <martin@v.loewis.de> parents: 22339 diff changeset	29 /* The POSIX spec says that implementations supporting the sem_*
2548e2f323fa Document that _POSIX_SEMAPHORES is predefined. Martin v. Löwis <martin@v.loewis.de> parents: 22339 diff changeset	30 family of functions must indicate this by defining
61467 f197407bdba2 Recorded merge of revisions 81032 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 39442 diff changeset	31 _POSIX_SEMAPHORES. */
22339 6c3e32357d91 Patch #525532: Add support for POSIX semaphores. Martin v. Löwis <martin@v.loewis.de> parents: 21766 diff changeset	32 #ifdef _POSIX_SEMAPHORES
61467 f197407bdba2 Recorded merge of revisions 81032 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 39442 diff changeset	33 /* On FreeBSD 4.x, _POSIX_SEMAPHORES is defined empty, so
34824 a50ffe65911b Add 0 to _POSIX_SEMAPHORES. Martin v. Löwis <martin@v.loewis.de> parents: 34762 diff changeset	34 we need to add 0 to make it work there as well. */
a50ffe65911b Add 0 to _POSIX_SEMAPHORES. Martin v. Löwis <martin@v.loewis.de> parents: 34762 diff changeset	35 #if (_POSIX_SEMAPHORES+0) == -1
34762 fcb507414c41 Patch #1163249 - Correctly handle _POSIX_SEMAPHORES == -1 to mean no Anthony Baxter <anthonybaxter@gmail.com> parents: 32526 diff changeset	36 #define HAVE_BROKEN_POSIX_SEMAPHORES
fcb507414c41 Patch #1163249 - Correctly handle _POSIX_SEMAPHORES == -1 to mean no Anthony Baxter <anthonybaxter@gmail.com> parents: 32526 diff changeset	37 #else
22339 6c3e32357d91 Patch #525532: Add support for POSIX semaphores. Martin v. Löwis <martin@v.loewis.de> parents: 21766 diff changeset	38 #include <semaphore.h>
6c3e32357d91 Patch #525532: Add support for POSIX semaphores. Martin v. Löwis <martin@v.loewis.de> parents: 21766 diff changeset	39 #include <errno.h>
6c3e32357d91 Patch #525532: Add support for POSIX semaphores. Martin v. Löwis <martin@v.loewis.de> parents: 21766 diff changeset	40 #endif
34762 fcb507414c41 Patch #1163249 - Correctly handle _POSIX_SEMAPHORES == -1 to mean no Anthony Baxter <anthonybaxter@gmail.com> parents: 32526 diff changeset	41 #endif
3663 07164d30429d Got rid of florida hack and made it work with Solaris 2.5 pthreads. Guido van Rossum <guido@python.org> parents: 2097 diff changeset	42
37879 f731859e9b3b Merge p3yk branch with the trunk up to revision 45595. This breaks a fair Thomas Wouters <thomas@python.org> parents: 35607 diff changeset	43 /* Before FreeBSD 5.4, system scope threads was very limited resource
f731859e9b3b Merge p3yk branch with the trunk up to revision 45595. This breaks a fair Thomas Wouters <thomas@python.org> parents: 35607 diff changeset	44 in default setting. So the process scope is preferred to get
f731859e9b3b Merge p3yk branch with the trunk up to revision 45595. This breaks a fair Thomas Wouters <thomas@python.org> parents: 35607 diff changeset	45 enough number of threads to work. */
f731859e9b3b Merge p3yk branch with the trunk up to revision 45595. This breaks a fair Thomas Wouters <thomas@python.org> parents: 35607 diff changeset	46 #ifdef __FreeBSD__
f731859e9b3b Merge p3yk branch with the trunk up to revision 45595. This breaks a fair Thomas Wouters <thomas@python.org> parents: 35607 diff changeset	47 #include <osreldate.h>
f731859e9b3b Merge p3yk branch with the trunk up to revision 45595. This breaks a fair Thomas Wouters <thomas@python.org> parents: 35607 diff changeset	48 #if __FreeBSD_version >= 500000 && __FreeBSD_version < 504101
f731859e9b3b Merge p3yk branch with the trunk up to revision 45595. This breaks a fair Thomas Wouters <thomas@python.org> parents: 35607 diff changeset	49 #undef PTHREAD_SYSTEM_SCHED_SUPPORTED
f731859e9b3b Merge p3yk branch with the trunk up to revision 45595. This breaks a fair Thomas Wouters <thomas@python.org> parents: 35607 diff changeset	50 #endif
f731859e9b3b Merge p3yk branch with the trunk up to revision 45595. This breaks a fair Thomas Wouters <thomas@python.org> parents: 35607 diff changeset	51 #endif
f731859e9b3b Merge p3yk branch with the trunk up to revision 45595. This breaks a fair Thomas Wouters <thomas@python.org> parents: 35607 diff changeset	52
26598 56dbd9079a13 Patch #650415: Avoid redefinition of macros. Martin v. Löwis <martin@v.loewis.de> parents: 26499 diff changeset	53 #if !defined(pthread_attr_default)
5493 ef93d51dab36 Support for various versions of the pthread draft. Guido van Rossum <guido@python.org> parents: 5395 diff changeset	54 # define pthread_attr_default ((pthread_attr_t *)NULL)
26598 56dbd9079a13 Patch #650415: Avoid redefinition of macros. Martin v. Löwis <martin@v.loewis.de> parents: 26499 diff changeset	55 #endif
56dbd9079a13 Patch #650415: Avoid redefinition of macros. Martin v. Löwis <martin@v.loewis.de> parents: 26499 diff changeset	56 #if !defined(pthread_mutexattr_default)
5493 ef93d51dab36 Support for various versions of the pthread draft. Guido van Rossum <guido@python.org> parents: 5395 diff changeset	57 # define pthread_mutexattr_default ((pthread_mutexattr_t *)NULL)
26598 56dbd9079a13 Patch #650415: Avoid redefinition of macros. Martin v. Löwis <martin@v.loewis.de> parents: 26499 diff changeset	58 #endif
56dbd9079a13 Patch #650415: Avoid redefinition of macros. Martin v. Löwis <martin@v.loewis.de> parents: 26499 diff changeset	59 #if !defined(pthread_condattr_default)
5493 ef93d51dab36 Support for various versions of the pthread draft. Guido van Rossum <guido@python.org> parents: 5395 diff changeset	60 # define pthread_condattr_default ((pthread_condattr_t *)NULL)
3965 9c05ff6fb0a4 Changes necessary for AIX. Guido van Rossum <guido@python.org> parents: 3663 diff changeset	61 #endif
1628 a9dd2e1ea5c9 Split thread.c into a number of system-specific files. Guido van Rossum <guido@python.org> parents: diff changeset	62
5493 ef93d51dab36 Support for various versions of the pthread draft. Guido van Rossum <guido@python.org> parents: 5395 diff changeset	63
22339 6c3e32357d91 Patch #525532: Add support for POSIX semaphores. Martin v. Löwis <martin@v.loewis.de> parents: 21766 diff changeset	64 /* Whether or not to use semaphores directly rather than emulating them with
6c3e32357d91 Patch #525532: Add support for POSIX semaphores. Martin v. Löwis <martin@v.loewis.de> parents: 21766 diff changeset	65 * mutexes and condition variables:
6c3e32357d91 Patch #525532: Add support for POSIX semaphores. Martin v. Löwis <martin@v.loewis.de> parents: 21766 diff changeset	66 */
65205 ed5e598da150 Issue #10062: Allow building on platforms which do not have sem_timedwait. Antoine Pitrou <solipsis@pitrou.net> parents: 64844 diff changeset	67 #if (defined(_POSIX_SEMAPHORES) && !defined(HAVE_BROKEN_POSIX_SEMAPHORES) && \
ed5e598da150 Issue #10062: Allow building on platforms which do not have sem_timedwait. Antoine Pitrou <solipsis@pitrou.net> parents: 64844 diff changeset	68 defined(HAVE_SEM_TIMEDWAIT))
22339 6c3e32357d91 Patch #525532: Add support for POSIX semaphores. Martin v. Löwis <martin@v.loewis.de> parents: 21766 diff changeset	69 # define USE_SEMAPHORES
6c3e32357d91 Patch #525532: Add support for POSIX semaphores. Martin v. Löwis <martin@v.loewis.de> parents: 21766 diff changeset	70 #else
6c3e32357d91 Patch #525532: Add support for POSIX semaphores. Martin v. Löwis <martin@v.loewis.de> parents: 21766 diff changeset	71 # undef USE_SEMAPHORES
6c3e32357d91 Patch #525532: Add support for POSIX semaphores. Martin v. Löwis <martin@v.loewis.de> parents: 21766 diff changeset	72 #endif
6c3e32357d91 Patch #525532: Add support for POSIX semaphores. Martin v. Löwis <martin@v.loewis.de> parents: 21766 diff changeset	73
6c3e32357d91 Patch #525532: Add support for POSIX semaphores. Martin v. Löwis <martin@v.loewis.de> parents: 21766 diff changeset	74
20398 c9a212329da6 Add SF patch #468347 -- mask signals for non-main pthreads, by Jason Lowe: Guido van Rossum <guido@python.org> parents: 19826 diff changeset	75 /* On platforms that don't use standard POSIX threads pthread_sigmask()
c9a212329da6 Add SF patch #468347 -- mask signals for non-main pthreads, by Jason Lowe: Guido van Rossum <guido@python.org> parents: 19826 diff changeset	76 * isn't present. DEC threads uses sigprocmask() instead as do most
c9a212329da6 Add SF patch #468347 -- mask signals for non-main pthreads, by Jason Lowe: Guido van Rossum <guido@python.org> parents: 19826 diff changeset	77 * other UNIX International compliant systems that don't have the full
c9a212329da6 Add SF patch #468347 -- mask signals for non-main pthreads, by Jason Lowe: Guido van Rossum <guido@python.org> parents: 19826 diff changeset	78 * pthread implementation.
c9a212329da6 Add SF patch #468347 -- mask signals for non-main pthreads, by Jason Lowe: Guido van Rossum <guido@python.org> parents: 19826 diff changeset	79 */
29972 a408ac5527c3 Patch 775605: Cygwin pthread_sigmask() workaround patch Jason Tishler <jason@tishler.net> parents: 28687 diff changeset	80 #if defined(HAVE_PTHREAD_SIGMASK) && !defined(HAVE_BROKEN_PTHREAD_SIGMASK)
20398 c9a212329da6 Add SF patch #468347 -- mask signals for non-main pthreads, by Jason Lowe: Guido van Rossum <guido@python.org> parents: 19826 diff changeset	81 # define SET_THREAD_SIGMASK pthread_sigmask
c9a212329da6 Add SF patch #468347 -- mask signals for non-main pthreads, by Jason Lowe: Guido van Rossum <guido@python.org> parents: 19826 diff changeset	82 #else
c9a212329da6 Add SF patch #468347 -- mask signals for non-main pthreads, by Jason Lowe: Guido van Rossum <guido@python.org> parents: 19826 diff changeset	83 # define SET_THREAD_SIGMASK sigprocmask
c9a212329da6 Add SF patch #468347 -- mask signals for non-main pthreads, by Jason Lowe: Guido van Rossum <guido@python.org> parents: 19826 diff changeset	84 #endif
c9a212329da6 Add SF patch #468347 -- mask signals for non-main pthreads, by Jason Lowe: Guido van Rossum <guido@python.org> parents: 19826 diff changeset	85
c9a212329da6 Add SF patch #468347 -- mask signals for non-main pthreads, by Jason Lowe: Guido van Rossum <guido@python.org> parents: 19826 diff changeset	86
60598 01d1fd775d16 Issue #7316: the acquire() method of lock objects in the :mod:`threading` Antoine Pitrou <solipsis@pitrou.net> parents: 59089 diff changeset	87 /* We assume all modern POSIX systems have gettimeofday() */
01d1fd775d16 Issue #7316: the acquire() method of lock objects in the :mod:`threading` Antoine Pitrou <solipsis@pitrou.net> parents: 59089 diff changeset	88 #ifdef GETTIMEOFDAY_NO_TZ
01d1fd775d16 Issue #7316: the acquire() method of lock objects in the :mod:`threading` Antoine Pitrou <solipsis@pitrou.net> parents: 59089 diff changeset	89 #define GETTIMEOFDAY(ptv) gettimeofday(ptv)
01d1fd775d16 Issue #7316: the acquire() method of lock objects in the :mod:`threading` Antoine Pitrou <solipsis@pitrou.net> parents: 59089 diff changeset	90 #else
01d1fd775d16 Issue #7316: the acquire() method of lock objects in the :mod:`threading` Antoine Pitrou <solipsis@pitrou.net> parents: 59089 diff changeset	91 #define GETTIMEOFDAY(ptv) gettimeofday(ptv, (struct timezone *)NULL)
01d1fd775d16 Issue #7316: the acquire() method of lock objects in the :mod:`threading` Antoine Pitrou <solipsis@pitrou.net> parents: 59089 diff changeset	92 #endif
01d1fd775d16 Issue #7316: the acquire() method of lock objects in the :mod:`threading` Antoine Pitrou <solipsis@pitrou.net> parents: 59089 diff changeset	93
01d1fd775d16 Issue #7316: the acquire() method of lock objects in the :mod:`threading` Antoine Pitrou <solipsis@pitrou.net> parents: 59089 diff changeset	94 #define MICROSECONDS_TO_TIMESPEC(microseconds, ts) \
01d1fd775d16 Issue #7316: the acquire() method of lock objects in the :mod:`threading` Antoine Pitrou <solipsis@pitrou.net> parents: 59089 diff changeset	95 do { \
61466 cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 61184 diff changeset	96 struct timeval tv; \
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 61184 diff changeset	97 GETTIMEOFDAY(&tv); \
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 61184 diff changeset	98 tv.tv_usec += microseconds % 1000000; \
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 61184 diff changeset	99 tv.tv_sec += microseconds / 1000000; \
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 61184 diff changeset	100 tv.tv_sec += tv.tv_usec / 1000000; \
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 61184 diff changeset	101 tv.tv_usec %= 1000000; \
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 61184 diff changeset	102 ts.tv_sec = tv.tv_sec; \
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 61184 diff changeset	103 ts.tv_nsec = tv.tv_usec * 1000; \
60598 01d1fd775d16 Issue #7316: the acquire() method of lock objects in the :mod:`threading` Antoine Pitrou <solipsis@pitrou.net> parents: 59089 diff changeset	104 } while(0)
01d1fd775d16 Issue #7316: the acquire() method of lock objects in the :mod:`threading` Antoine Pitrou <solipsis@pitrou.net> parents: 59089 diff changeset	105
01d1fd775d16 Issue #7316: the acquire() method of lock objects in the :mod:`threading` Antoine Pitrou <solipsis@pitrou.net> parents: 59089 diff changeset	106
1629 4121afd76d73 Tim's changes; removed some remaining non-functional ifdefs Guido van Rossum <guido@python.org> parents: 1628 diff changeset	107 /* A pthread mutex isn't sufficient to model the Python lock type
4121afd76d73 Tim's changes; removed some remaining non-functional ifdefs Guido van Rossum <guido@python.org> parents: 1628 diff changeset	108 * because, according to Draft 5 of the docs (P1003.4a/D5), both of the
4121afd76d73 Tim's changes; removed some remaining non-functional ifdefs Guido van Rossum <guido@python.org> parents: 1628 diff changeset	109 * following are undefined:
4121afd76d73 Tim's changes; removed some remaining non-functional ifdefs Guido van Rossum <guido@python.org> parents: 1628 diff changeset	110 * -> a thread tries to lock a mutex it already has locked
4121afd76d73 Tim's changes; removed some remaining non-functional ifdefs Guido van Rossum <guido@python.org> parents: 1628 diff changeset	111 * -> a thread tries to unlock a mutex locked by a different thread
4121afd76d73 Tim's changes; removed some remaining non-functional ifdefs Guido van Rossum <guido@python.org> parents: 1628 diff changeset	112 * pthread mutexes are designed for serializing threads over short pieces
4121afd76d73 Tim's changes; removed some remaining non-functional ifdefs Guido van Rossum <guido@python.org> parents: 1628 diff changeset	113 * of code anyway, so wouldn't be an appropriate implementation of
1628 a9dd2e1ea5c9 Split thread.c into a number of system-specific files. Guido van Rossum <guido@python.org> parents: diff changeset	114 * Python's locks regardless.
1629 4121afd76d73 Tim's changes; removed some remaining non-functional ifdefs Guido van Rossum <guido@python.org> parents: 1628 diff changeset	115 *
4121afd76d73 Tim's changes; removed some remaining non-functional ifdefs Guido van Rossum <guido@python.org> parents: 1628 diff changeset	116 * The pthread_lock struct implements a Python lock as a "locked?" bit
4121afd76d73 Tim's changes; removed some remaining non-functional ifdefs Guido van Rossum <guido@python.org> parents: 1628 diff changeset	117 * and a <condition, mutex> pair. In general, if the bit can be acquired
4121afd76d73 Tim's changes; removed some remaining non-functional ifdefs Guido van Rossum <guido@python.org> parents: 1628 diff changeset	118 * instantly, it is, else the pair is used to block the thread until the
4121afd76d73 Tim's changes; removed some remaining non-functional ifdefs Guido van Rossum <guido@python.org> parents: 1628 diff changeset	119 * bit is cleared. 9 May 1994 tim@ksr.com
1628 a9dd2e1ea5c9 Split thread.c into a number of system-specific files. Guido van Rossum <guido@python.org> parents: diff changeset	120 */
1629 4121afd76d73 Tim's changes; removed some remaining non-functional ifdefs Guido van Rossum <guido@python.org> parents: 1628 diff changeset	121
1628 a9dd2e1ea5c9 Split thread.c into a number of system-specific files. Guido van Rossum <guido@python.org> parents: diff changeset	122 typedef struct {
61467 f197407bdba2 Recorded merge of revisions 81032 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 39442 diff changeset	123 char locked; /* 0=unlocked, 1=locked */
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 39442 diff changeset	124 /* a <cond, mutex> pair to handle an acquire of a locked lock */
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 39442 diff changeset	125 pthread_cond_t lock_released;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 39442 diff changeset	126 pthread_mutex_t mut;
1628 a9dd2e1ea5c9 Split thread.c into a number of system-specific files. Guido van Rossum <guido@python.org> parents: diff changeset	127 } pthread_lock;
a9dd2e1ea5c9 Split thread.c into a number of system-specific files. Guido van Rossum <guido@python.org> parents: diff changeset	128
9290 2340f615da8f BSDI specific patches, inspired by Nigel Head and otto@mail.olympus.net. Guido van Rossum <guido@python.org> parents: 9079 diff changeset	129 #define CHECK_STATUS(name) if (status != 0) { perror(name); error = 1; }
1629 4121afd76d73 Tim's changes; removed some remaining non-functional ifdefs Guido van Rossum <guido@python.org> parents: 1628 diff changeset	130
1628 a9dd2e1ea5c9 Split thread.c into a number of system-specific files. Guido van Rossum <guido@python.org> parents: diff changeset	131 /*
a9dd2e1ea5c9 Split thread.c into a number of system-specific files. Guido van Rossum <guido@python.org> parents: diff changeset	132 * Initialization.
a9dd2e1ea5c9 Split thread.c into a number of system-specific files. Guido van Rossum <guido@python.org> parents: diff changeset	133 */
9290 2340f615da8f BSDI specific patches, inspired by Nigel Head and otto@mail.olympus.net. Guido van Rossum <guido@python.org> parents: 9079 diff changeset	134
2340f615da8f BSDI specific patches, inspired by Nigel Head and otto@mail.olympus.net. Guido van Rossum <guido@python.org> parents: 9079 diff changeset	135 #ifdef _HAVE_BSDI
13658 f79434ee41fa Mass ANSIfication of function definitions. Doesn't cover all 'extern' Thomas Wouters <thomas@python.org> parents: 13256 diff changeset	136 static
f79434ee41fa Mass ANSIfication of function definitions. Doesn't cover all 'extern' Thomas Wouters <thomas@python.org> parents: 13256 diff changeset	137 void _noop(void)
9290 2340f615da8f BSDI specific patches, inspired by Nigel Head and otto@mail.olympus.net. Guido van Rossum <guido@python.org> parents: 9079 diff changeset	138 {
2340f615da8f BSDI specific patches, inspired by Nigel Head and otto@mail.olympus.net. Guido van Rossum <guido@python.org> parents: 9079 diff changeset	139 }
2340f615da8f BSDI specific patches, inspired by Nigel Head and otto@mail.olympus.net. Guido van Rossum <guido@python.org> parents: 9079 diff changeset	140
13658 f79434ee41fa Mass ANSIfication of function definitions. Doesn't cover all 'extern' Thomas Wouters <thomas@python.org> parents: 13256 diff changeset	141 static void
f79434ee41fa Mass ANSIfication of function definitions. Doesn't cover all 'extern' Thomas Wouters <thomas@python.org> parents: 13256 diff changeset	142 PyThread__init_thread(void)
9290 2340f615da8f BSDI specific patches, inspired by Nigel Head and otto@mail.olympus.net. Guido van Rossum <guido@python.org> parents: 9079 diff changeset	143 {
61467 f197407bdba2 Recorded merge of revisions 81032 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 39442 diff changeset	144 /* DO AN INIT BY STARTING THE THREAD */
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 39442 diff changeset	145 static int dummy = 0;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 39442 diff changeset	146 pthread_t thread1;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 39442 diff changeset	147 pthread_create(&thread1, NULL, (void *) _noop, &dummy);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 39442 diff changeset	148 pthread_join(thread1, NULL);
9290 2340f615da8f BSDI specific patches, inspired by Nigel Head and otto@mail.olympus.net. Guido van Rossum <guido@python.org> parents: 9079 diff changeset	149 }
2340f615da8f BSDI specific patches, inspired by Nigel Head and otto@mail.olympus.net. Guido van Rossum <guido@python.org> parents: 9079 diff changeset	150
2340f615da8f BSDI specific patches, inspired by Nigel Head and otto@mail.olympus.net. Guido van Rossum <guido@python.org> parents: 9079 diff changeset	151 #else /* !_HAVE_BSDI */
2340f615da8f BSDI specific patches, inspired by Nigel Head and otto@mail.olympus.net. Guido van Rossum <guido@python.org> parents: 9079 diff changeset	152
13658 f79434ee41fa Mass ANSIfication of function definitions. Doesn't cover all 'extern' Thomas Wouters <thomas@python.org> parents: 13256 diff changeset	153 static void
f79434ee41fa Mass ANSIfication of function definitions. Doesn't cover all 'extern' Thomas Wouters <thomas@python.org> parents: 13256 diff changeset	154 PyThread__init_thread(void)
1628 a9dd2e1ea5c9 Split thread.c into a number of system-specific files. Guido van Rossum <guido@python.org> parents: diff changeset	155 {
9079 4d2cb212c8d1 Apparently on AIX when using gcc you need to call pthread_init() Guido van Rossum <guido@python.org> parents: 9070 diff changeset	156 #if defined(_AIX) && defined(__GNUC__)
61467 f197407bdba2 Recorded merge of revisions 81032 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 39442 diff changeset	157 pthread_init();
9079 4d2cb212c8d1 Apparently on AIX when using gcc you need to call pthread_init() Guido van Rossum <guido@python.org> parents: 9070 diff changeset	158 #endif
1628 a9dd2e1ea5c9 Split thread.c into a number of system-specific files. Guido van Rossum <guido@python.org> parents: diff changeset	159 }
a9dd2e1ea5c9 Split thread.c into a number of system-specific files. Guido van Rossum <guido@python.org> parents: diff changeset	160
9290 2340f615da8f BSDI specific patches, inspired by Nigel Head and otto@mail.olympus.net. Guido van Rossum <guido@python.org> parents: 9079 diff changeset	161 #endif /* !_HAVE_BSDI */
2340f615da8f BSDI specific patches, inspired by Nigel Head and otto@mail.olympus.net. Guido van Rossum <guido@python.org> parents: 9079 diff changeset	162
1628 a9dd2e1ea5c9 Split thread.c into a number of system-specific files. Guido van Rossum <guido@python.org> parents: diff changeset	163 /*
a9dd2e1ea5c9 Split thread.c into a number of system-specific files. Guido van Rossum <guido@python.org> parents: diff changeset	164 * Thread support.
a9dd2e1ea5c9 Split thread.c into a number of system-specific files. Guido van Rossum <guido@python.org> parents: diff changeset	165 */
1629 4121afd76d73 Tim's changes; removed some remaining non-functional ifdefs Guido van Rossum <guido@python.org> parents: 1628 diff changeset	166
4121afd76d73 Tim's changes; removed some remaining non-functional ifdefs Guido van Rossum <guido@python.org> parents: 1628 diff changeset	167
20468 ebfd87e87884 Partial patch from SF #452266, by Jason Petrone. Guido van Rossum <guido@python.org> parents: 20431 diff changeset	168 long
13658 f79434ee41fa Mass ANSIfication of function definitions. Doesn't cover all 'extern' Thomas Wouters <thomas@python.org> parents: 13256 diff changeset	169 PyThread_start_new_thread(void (func)(void ), void *arg)
1628 a9dd2e1ea5c9 Split thread.c into a number of system-specific files. Guido van Rossum <guido@python.org> parents: diff changeset	170 {
61467 f197407bdba2 Recorded merge of revisions 81032 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 39442 diff changeset	171 pthread_t th;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 39442 diff changeset	172 int status;
19826 8ef456949b76 Improve threading on Solaris, according to SF patch #460269, submitted Guido van Rossum <guido@python.org> parents: 19549 diff changeset	173 #if defined(THREAD_STACK_SIZE) \|\| defined(PTHREAD_SYSTEM_SCHED_SUPPORTED)
61467 f197407bdba2 Recorded merge of revisions 81032 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 39442 diff changeset	174 pthread_attr_t attrs;
19549 11a758c56027 GUSI on the Mac creates threads with a default stack size of 20KB, which is Jack Jansen <jack.jansen@cwi.nl> parents: 14375 diff changeset	175 #endif
39442 654c380cf8b9 Merged revisions 46753-51188 via svnmerge from Thomas Wouters <thomas@python.org> parents: 37879 diff changeset	176 #if defined(THREAD_STACK_SIZE)
61467 f197407bdba2 Recorded merge of revisions 81032 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 39442 diff changeset	177 size_t tss;
39442 654c380cf8b9 Merged revisions 46753-51188 via svnmerge from Thomas Wouters <thomas@python.org> parents: 37879 diff changeset	178 #endif
654c380cf8b9 Merged revisions 46753-51188 via svnmerge from Thomas Wouters <thomas@python.org> parents: 37879 diff changeset	179
61467 f197407bdba2 Recorded merge of revisions 81032 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 39442 diff changeset	180 dprintf(("PyThread_start_new_thread called\n"));
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 39442 diff changeset	181 if (!initialized)
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 39442 diff changeset	182 PyThread_init_thread();
5493 ef93d51dab36 Support for various versions of the pthread draft. Guido van Rossum <guido@python.org> parents: 5395 diff changeset	183
19826 8ef456949b76 Improve threading on Solaris, according to SF patch #460269, submitted Guido van Rossum <guido@python.org> parents: 19549 diff changeset	184 #if defined(THREAD_STACK_SIZE) \|\| defined(PTHREAD_SYSTEM_SCHED_SUPPORTED)
61467 f197407bdba2 Recorded merge of revisions 81032 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 39442 diff changeset	185 if (pthread_attr_init(&attrs) != 0)
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 39442 diff changeset	186 return -1;
19826 8ef456949b76 Improve threading on Solaris, according to SF patch #460269, submitted Guido van Rossum <guido@python.org> parents: 19549 diff changeset	187 #endif
39442 654c380cf8b9 Merged revisions 46753-51188 via svnmerge from Thomas Wouters <thomas@python.org> parents: 37879 diff changeset	188 #if defined(THREAD_STACK_SIZE)
61467 f197407bdba2 Recorded merge of revisions 81032 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 39442 diff changeset	189 tss = (_pythread_stacksize != 0) ? _pythread_stacksize
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 39442 diff changeset	190 : THREAD_STACK_SIZE;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 39442 diff changeset	191 if (tss != 0) {
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 39442 diff changeset	192 if (pthread_attr_setstacksize(&attrs, tss) != 0) {
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 39442 diff changeset	193 pthread_attr_destroy(&attrs);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 39442 diff changeset	194 return -1;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 39442 diff changeset	195 }
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 39442 diff changeset	196 }
19549 11a758c56027 GUSI on the Mac creates threads with a default stack size of 20KB, which is Jack Jansen <jack.jansen@cwi.nl> parents: 14375 diff changeset	197 #endif
37879 f731859e9b3b Merge p3yk branch with the trunk up to revision 45595. This breaks a fair Thomas Wouters <thomas@python.org> parents: 35607 diff changeset	198 #if defined(PTHREAD_SYSTEM_SCHED_SUPPORTED)
61467 f197407bdba2 Recorded merge of revisions 81032 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 39442 diff changeset	199 pthread_attr_setscope(&attrs, PTHREAD_SCOPE_SYSTEM);
19826 8ef456949b76 Improve threading on Solaris, according to SF patch #460269, submitted Guido van Rossum <guido@python.org> parents: 19549 diff changeset	200 #endif
20398 c9a212329da6 Add SF patch #468347 -- mask signals for non-main pthreads, by Jason Lowe: Guido van Rossum <guido@python.org> parents: 19826 diff changeset	201
61467 f197407bdba2 Recorded merge of revisions 81032 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 39442 diff changeset	202 status = pthread_create(&th,
19826 8ef456949b76 Improve threading on Solaris, according to SF patch #460269, submitted Guido van Rossum <guido@python.org> parents: 19549 diff changeset	203 #if defined(THREAD_STACK_SIZE) \|\| defined(PTHREAD_SYSTEM_SCHED_SUPPORTED)
61467 f197407bdba2 Recorded merge of revisions 81032 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 39442 diff changeset	204 &attrs,
19549 11a758c56027 GUSI on the Mac creates threads with a default stack size of 20KB, which is Jack Jansen <jack.jansen@cwi.nl> parents: 14375 diff changeset	205 #else
61467 f197407bdba2 Recorded merge of revisions 81032 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 39442 diff changeset	206 (pthread_attr_t*)NULL,
19549 11a758c56027 GUSI on the Mac creates threads with a default stack size of 20KB, which is Jack Jansen <jack.jansen@cwi.nl> parents: 14375 diff changeset	207 #endif
61467 f197407bdba2 Recorded merge of revisions 81032 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 39442 diff changeset	208 (void* ()(void ))func,
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 39442 diff changeset	209 (void *)arg
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 39442 diff changeset	210 );
20398 c9a212329da6 Add SF patch #468347 -- mask signals for non-main pthreads, by Jason Lowe: Guido van Rossum <guido@python.org> parents: 19826 diff changeset	211
20922 7a991d012cd6 Fix memory leak. This is part of SF patch #478006. Fred Drake <fdrake@acm.org> parents: 20468 diff changeset	212 #if defined(THREAD_STACK_SIZE) \|\| defined(PTHREAD_SYSTEM_SCHED_SUPPORTED)
61467 f197407bdba2 Recorded merge of revisions 81032 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 39442 diff changeset	213 pthread_attr_destroy(&attrs);
19549 11a758c56027 GUSI on the Mac creates threads with a default stack size of 20KB, which is Jack Jansen <jack.jansen@cwi.nl> parents: 14375 diff changeset	214 #endif
61467 f197407bdba2 Recorded merge of revisions 81032 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 39442 diff changeset	215 if (status != 0)
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 39442 diff changeset	216 return -1;
28687 40d287c3d906 Patch #716969: Detect thread creation failure. Will backport to 2.2. Martin v. Löwis <martin@v.loewis.de> parents: 28673 diff changeset	217
61467 f197407bdba2 Recorded merge of revisions 81032 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 39442 diff changeset	218 pthread_detach(th);
28687 40d287c3d906 Patch #716969: Detect thread creation failure. Will backport to 2.2. Martin v. Löwis <martin@v.loewis.de> parents: 28673 diff changeset	219
20468 ebfd87e87884 Partial patch from SF #452266, by Jason Petrone. Guido van Rossum <guido@python.org> parents: 20431 diff changeset	220 #if SIZEOF_PTHREAD_T <= SIZEOF_LONG
61467 f197407bdba2 Recorded merge of revisions 81032 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 39442 diff changeset	221 return (long) th;
20468 ebfd87e87884 Partial patch from SF #452266, by Jason Petrone. Guido van Rossum <guido@python.org> parents: 20431 diff changeset	222 #else
61467 f197407bdba2 Recorded merge of revisions 81032 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 39442 diff changeset	223 return (long) (long ) &th;
20468 ebfd87e87884 Partial patch from SF #452266, by Jason Petrone. Guido van Rossum <guido@python.org> parents: 20431 diff changeset	224 #endif
1628 a9dd2e1ea5c9 Split thread.c into a number of system-specific files. Guido van Rossum <guido@python.org> parents: diff changeset	225 }
a9dd2e1ea5c9 Split thread.c into a number of system-specific files. Guido van Rossum <guido@python.org> parents: diff changeset	226
14144 31cda87e9ff4 This patch partly (some stuff went in already) ports Python to Monterey. Trent Mick <trentm@activestate.com> parents: 13658 diff changeset	227 /* XXX This implementation is considered (to quote Tim Peters) "inherently
31cda87e9ff4 This patch partly (some stuff went in already) ports Python to Monterey. Trent Mick <trentm@activestate.com> parents: 13658 diff changeset	228 hosed" because:
31611 0979fa062deb typo Skip Montanaro <skip@pobox.com> parents: 31470 diff changeset	229 - It does not guarantee the promise that a non-zero integer is returned.
14144 31cda87e9ff4 This patch partly (some stuff went in already) ports Python to Monterey. Trent Mick <trentm@activestate.com> parents: 13658 diff changeset	230 - The cast to long is inherently unsafe.
68457 15b090c9442a Issue #11495: OSF support is eliminated. It was deprecated in Python 3.2 Jesus Cea <jcea@jcea.es> parents: 68257 diff changeset	231 - It is not clear that the 'volatile' (for AIX?) are any longer necessary.
14144 31cda87e9ff4 This patch partly (some stuff went in already) ports Python to Monterey. Trent Mick <trentm@activestate.com> parents: 13658 diff changeset	232 */
61467 f197407bdba2 Recorded merge of revisions 81032 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 39442 diff changeset	233 long
13658 f79434ee41fa Mass ANSIfication of function definitions. Doesn't cover all 'extern' Thomas Wouters <thomas@python.org> parents: 13256 diff changeset	234 PyThread_get_thread_ident(void)
1651 7e5f97bab1e6 ceval.c: dict of local mapping is now a tuple Guido van Rossum <guido@python.org> parents: 1629 diff changeset	235 {
61467 f197407bdba2 Recorded merge of revisions 81032 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 39442 diff changeset	236 volatile pthread_t threadid;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 39442 diff changeset	237 if (!initialized)
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 39442 diff changeset	238 PyThread_init_thread();
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 39442 diff changeset	239 threadid = pthread_self();
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 39442 diff changeset	240 return (long) threadid;
1651 7e5f97bab1e6 ceval.c: dict of local mapping is now a tuple Guido van Rossum <guido@python.org> parents: 1629 diff changeset	241 }
7e5f97bab1e6 ceval.c: dict of local mapping is now a tuple Guido van Rossum <guido@python.org> parents: 1629 diff changeset	242
61467 f197407bdba2 Recorded merge of revisions 81032 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 39442 diff changeset	243 void
13658 f79434ee41fa Mass ANSIfication of function definitions. Doesn't cover all 'extern' Thomas Wouters <thomas@python.org> parents: 13256 diff changeset	244 PyThread_exit_thread(void)
1628 a9dd2e1ea5c9 Split thread.c into a number of system-specific files. Guido van Rossum <guido@python.org> parents: diff changeset	245 {
61466 cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 61184 diff changeset	246 dprintf(("PyThread_exit_thread called\n"));
69832 2a19d09b08f8 Issue #1856: Avoid crashes and lockups when daemon threads run while the Antoine Pitrou <solipsis@pitrou.net> parents: 69226 diff changeset	247 if (!initialized)
61466 cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 61184 diff changeset	248 exit(0);
69832 2a19d09b08f8 Issue #1856: Avoid crashes and lockups when daemon threads run while the Antoine Pitrou <solipsis@pitrou.net> parents: 69226 diff changeset	249 pthread_exit(0);
1628 a9dd2e1ea5c9 Split thread.c into a number of system-specific files. Guido van Rossum <guido@python.org> parents: diff changeset	250 }
a9dd2e1ea5c9 Split thread.c into a number of system-specific files. Guido van Rossum <guido@python.org> parents: diff changeset	251
22339 6c3e32357d91 Patch #525532: Add support for POSIX semaphores. Martin v. Löwis <martin@v.loewis.de> parents: 21766 diff changeset	252 #ifdef USE_SEMAPHORES
6c3e32357d91 Patch #525532: Add support for POSIX semaphores. Martin v. Löwis <martin@v.loewis.de> parents: 21766 diff changeset	253
6c3e32357d91 Patch #525532: Add support for POSIX semaphores. Martin v. Löwis <martin@v.loewis.de> parents: 21766 diff changeset	254 /*
6c3e32357d91 Patch #525532: Add support for POSIX semaphores. Martin v. Löwis <martin@v.loewis.de> parents: 21766 diff changeset	255 * Lock support.
6c3e32357d91 Patch #525532: Add support for POSIX semaphores. Martin v. Löwis <martin@v.loewis.de> parents: 21766 diff changeset	256 */
6c3e32357d91 Patch #525532: Add support for POSIX semaphores. Martin v. Löwis <martin@v.loewis.de> parents: 21766 diff changeset	257
61467 f197407bdba2 Recorded merge of revisions 81032 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 39442 diff changeset	258 PyThread_type_lock
22339 6c3e32357d91 Patch #525532: Add support for POSIX semaphores. Martin v. Löwis <martin@v.loewis.de> parents: 21766 diff changeset	259 PyThread_allocate_lock(void)
6c3e32357d91 Patch #525532: Add support for POSIX semaphores. Martin v. Löwis <martin@v.loewis.de> parents: 21766 diff changeset	260 {
61467 f197407bdba2 Recorded merge of revisions 81032 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 39442 diff changeset	261 sem_t *lock;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 39442 diff changeset	262 int status, error = 0;
22339 6c3e32357d91 Patch #525532: Add support for POSIX semaphores. Martin v. Löwis <martin@v.loewis.de> parents: 21766 diff changeset	263
61467 f197407bdba2 Recorded merge of revisions 81032 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 39442 diff changeset	264 dprintf(("PyThread_allocate_lock called\n"));
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 39442 diff changeset	265 if (!initialized)
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 39442 diff changeset	266 PyThread_init_thread();
22339 6c3e32357d91 Patch #525532: Add support for POSIX semaphores. Martin v. Löwis <martin@v.loewis.de> parents: 21766 diff changeset	267
61467 f197407bdba2 Recorded merge of revisions 81032 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 39442 diff changeset	268 lock = (sem_t *)malloc(sizeof(sem_t));
22339 6c3e32357d91 Patch #525532: Add support for POSIX semaphores. Martin v. Löwis <martin@v.loewis.de> parents: 21766 diff changeset	269
61467 f197407bdba2 Recorded merge of revisions 81032 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 39442 diff changeset	270 if (lock) {
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 39442 diff changeset	271 status = sem_init(lock,0,1);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 39442 diff changeset	272 CHECK_STATUS("sem_init");
22339 6c3e32357d91 Patch #525532: Add support for POSIX semaphores. Martin v. Löwis <martin@v.loewis.de> parents: 21766 diff changeset	273
61467 f197407bdba2 Recorded merge of revisions 81032 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 39442 diff changeset	274 if (error) {
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 39442 diff changeset	275 free((void *)lock);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 39442 diff changeset	276 lock = NULL;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 39442 diff changeset	277 }
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 39442 diff changeset	278 }
22339 6c3e32357d91 Patch #525532: Add support for POSIX semaphores. Martin v. Löwis <martin@v.loewis.de> parents: 21766 diff changeset	279
61467 f197407bdba2 Recorded merge of revisions 81032 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 39442 diff changeset	280 dprintf(("PyThread_allocate_lock() -> %p\n", lock));
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 39442 diff changeset	281 return (PyThread_type_lock)lock;
22339 6c3e32357d91 Patch #525532: Add support for POSIX semaphores. Martin v. Löwis <martin@v.loewis.de> parents: 21766 diff changeset	282 }
6c3e32357d91 Patch #525532: Add support for POSIX semaphores. Martin v. Löwis <martin@v.loewis.de> parents: 21766 diff changeset	283
61467 f197407bdba2 Recorded merge of revisions 81032 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 39442 diff changeset	284 void
22339 6c3e32357d91 Patch #525532: Add support for POSIX semaphores. Martin v. Löwis <martin@v.loewis.de> parents: 21766 diff changeset	285 PyThread_free_lock(PyThread_type_lock lock)
6c3e32357d91 Patch #525532: Add support for POSIX semaphores. Martin v. Löwis <martin@v.loewis.de> parents: 21766 diff changeset	286 {
61467 f197407bdba2 Recorded merge of revisions 81032 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 39442 diff changeset	287 sem_t thelock = (sem_t )lock;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 39442 diff changeset	288 int status, error = 0;
22339 6c3e32357d91 Patch #525532: Add support for POSIX semaphores. Martin v. Löwis <martin@v.loewis.de> parents: 21766 diff changeset	289
61467 f197407bdba2 Recorded merge of revisions 81032 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 39442 diff changeset	290 dprintf(("PyThread_free_lock(%p) called\n", lock));
22339 6c3e32357d91 Patch #525532: Add support for POSIX semaphores. Martin v. Löwis <martin@v.loewis.de> parents: 21766 diff changeset	291
61467 f197407bdba2 Recorded merge of revisions 81032 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 39442 diff changeset	292 if (!thelock)
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 39442 diff changeset	293 return;
22339 6c3e32357d91 Patch #525532: Add support for POSIX semaphores. Martin v. Löwis <martin@v.loewis.de> parents: 21766 diff changeset	294
61467 f197407bdba2 Recorded merge of revisions 81032 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 39442 diff changeset	295 status = sem_destroy(thelock);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 39442 diff changeset	296 CHECK_STATUS("sem_destroy");
22339 6c3e32357d91 Patch #525532: Add support for POSIX semaphores. Martin v. Löwis <martin@v.loewis.de> parents: 21766 diff changeset	297
61467 f197407bdba2 Recorded merge of revisions 81032 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 39442 diff changeset	298 free((void *)thelock);
22339 6c3e32357d91 Patch #525532: Add support for POSIX semaphores. Martin v. Löwis <martin@v.loewis.de> parents: 21766 diff changeset	299 }
6c3e32357d91 Patch #525532: Add support for POSIX semaphores. Martin v. Löwis <martin@v.loewis.de> parents: 21766 diff changeset	300
6c3e32357d91 Patch #525532: Add support for POSIX semaphores. Martin v. Löwis <martin@v.loewis.de> parents: 21766 diff changeset	301 /*
6c3e32357d91 Patch #525532: Add support for POSIX semaphores. Martin v. Löwis <martin@v.loewis.de> parents: 21766 diff changeset	302 * As of February 2002, Cygwin thread implementations mistakenly report error
6c3e32357d91 Patch #525532: Add support for POSIX semaphores. Martin v. Löwis <martin@v.loewis.de> parents: 21766 diff changeset	303 * codes in the return value of the sem_ calls (like the pthread_ functions).
6c3e32357d91 Patch #525532: Add support for POSIX semaphores. Martin v. Löwis <martin@v.loewis.de> parents: 21766 diff changeset	304 * Correct implementations return -1 and put the code in errno. This supports
6c3e32357d91 Patch #525532: Add support for POSIX semaphores. Martin v. Löwis <martin@v.loewis.de> parents: 21766 diff changeset	305 * either.
6c3e32357d91 Patch #525532: Add support for POSIX semaphores. Martin v. Löwis <martin@v.loewis.de> parents: 21766 diff changeset	306 */
6c3e32357d91 Patch #525532: Add support for POSIX semaphores. Martin v. Löwis <martin@v.loewis.de> parents: 21766 diff changeset	307 static int
6c3e32357d91 Patch #525532: Add support for POSIX semaphores. Martin v. Löwis <martin@v.loewis.de> parents: 21766 diff changeset	308 fix_status(int status)
6c3e32357d91 Patch #525532: Add support for POSIX semaphores. Martin v. Löwis <martin@v.loewis.de> parents: 21766 diff changeset	309 {
61467 f197407bdba2 Recorded merge of revisions 81032 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 39442 diff changeset	310 return (status == -1) ? errno : status;
22339 6c3e32357d91 Patch #525532: Add support for POSIX semaphores. Martin v. Löwis <martin@v.loewis.de> parents: 21766 diff changeset	311 }
6c3e32357d91 Patch #525532: Add support for POSIX semaphores. Martin v. Löwis <martin@v.loewis.de> parents: 21766 diff changeset	312
66946 b750c45a772c Issue #8844: Regular and recursive lock acquisitions can now be interrupted Antoine Pitrou <solipsis@pitrou.net> parents: 65205 diff changeset	313 PyLockStatus
b750c45a772c Issue #8844: Regular and recursive lock acquisitions can now be interrupted Antoine Pitrou <solipsis@pitrou.net> parents: 65205 diff changeset	314 PyThread_acquire_lock_timed(PyThread_type_lock lock, PY_TIMEOUT_T microseconds,
b750c45a772c Issue #8844: Regular and recursive lock acquisitions can now be interrupted Antoine Pitrou <solipsis@pitrou.net> parents: 65205 diff changeset	315 int intr_flag)
22339 6c3e32357d91 Patch #525532: Add support for POSIX semaphores. Martin v. Löwis <martin@v.loewis.de> parents: 21766 diff changeset	316 {
66946 b750c45a772c Issue #8844: Regular and recursive lock acquisitions can now be interrupted Antoine Pitrou <solipsis@pitrou.net> parents: 65205 diff changeset	317 PyLockStatus success;
61467 f197407bdba2 Recorded merge of revisions 81032 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 39442 diff changeset	318 sem_t thelock = (sem_t )lock;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 39442 diff changeset	319 int status, error = 0;
61466 cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 61184 diff changeset	320 struct timespec ts;
22339 6c3e32357d91 Patch #525532: Add support for POSIX semaphores. Martin v. Löwis <martin@v.loewis.de> parents: 21766 diff changeset	321
66946 b750c45a772c Issue #8844: Regular and recursive lock acquisitions can now be interrupted Antoine Pitrou <solipsis@pitrou.net> parents: 65205 diff changeset	322 dprintf(("PyThread_acquire_lock_timed(%p, %lld, %d) called\n",
b750c45a772c Issue #8844: Regular and recursive lock acquisitions can now be interrupted Antoine Pitrou <solipsis@pitrou.net> parents: 65205 diff changeset	323 lock, microseconds, intr_flag));
22339 6c3e32357d91 Patch #525532: Add support for POSIX semaphores. Martin v. Löwis <martin@v.loewis.de> parents: 21766 diff changeset	324
61466 cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 61184 diff changeset	325 if (microseconds > 0)
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 61184 diff changeset	326 MICROSECONDS_TO_TIMESPEC(microseconds, ts);
61467 f197407bdba2 Recorded merge of revisions 81032 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 39442 diff changeset	327 do {
61466 cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 61184 diff changeset	328 if (microseconds > 0)
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 61184 diff changeset	329 status = fix_status(sem_timedwait(thelock, &ts));
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 61184 diff changeset	330 else if (microseconds == 0)
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 61184 diff changeset	331 status = fix_status(sem_trywait(thelock));
61467 f197407bdba2 Recorded merge of revisions 81032 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 39442 diff changeset	332 else
61466 cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 61184 diff changeset	333 status = fix_status(sem_wait(thelock));
66946 b750c45a772c Issue #8844: Regular and recursive lock acquisitions can now be interrupted Antoine Pitrou <solipsis@pitrou.net> parents: 65205 diff changeset	334 /* Retry if interrupted by a signal, unless the caller wants to be
b750c45a772c Issue #8844: Regular and recursive lock acquisitions can now be interrupted Antoine Pitrou <solipsis@pitrou.net> parents: 65205 diff changeset	335 notified. */
b750c45a772c Issue #8844: Regular and recursive lock acquisitions can now be interrupted Antoine Pitrou <solipsis@pitrou.net> parents: 65205 diff changeset	336 } while (!intr_flag && status == EINTR);
22339 6c3e32357d91 Patch #525532: Add support for POSIX semaphores. Martin v. Löwis <martin@v.loewis.de> parents: 21766 diff changeset	337
66946 b750c45a772c Issue #8844: Regular and recursive lock acquisitions can now be interrupted Antoine Pitrou <solipsis@pitrou.net> parents: 65205 diff changeset	338 /* Don't check the status if we're stopping because of an interrupt. */
b750c45a772c Issue #8844: Regular and recursive lock acquisitions can now be interrupted Antoine Pitrou <solipsis@pitrou.net> parents: 65205 diff changeset	339 if (!(intr_flag && status == EINTR)) {
b750c45a772c Issue #8844: Regular and recursive lock acquisitions can now be interrupted Antoine Pitrou <solipsis@pitrou.net> parents: 65205 diff changeset	340 if (microseconds > 0) {
b750c45a772c Issue #8844: Regular and recursive lock acquisitions can now be interrupted Antoine Pitrou <solipsis@pitrou.net> parents: 65205 diff changeset	341 if (status != ETIMEDOUT)
b750c45a772c Issue #8844: Regular and recursive lock acquisitions can now be interrupted Antoine Pitrou <solipsis@pitrou.net> parents: 65205 diff changeset	342 CHECK_STATUS("sem_timedwait");
b750c45a772c Issue #8844: Regular and recursive lock acquisitions can now be interrupted Antoine Pitrou <solipsis@pitrou.net> parents: 65205 diff changeset	343 }
b750c45a772c Issue #8844: Regular and recursive lock acquisitions can now be interrupted Antoine Pitrou <solipsis@pitrou.net> parents: 65205 diff changeset	344 else if (microseconds == 0) {
b750c45a772c Issue #8844: Regular and recursive lock acquisitions can now be interrupted Antoine Pitrou <solipsis@pitrou.net> parents: 65205 diff changeset	345 if (status != EAGAIN)
b750c45a772c Issue #8844: Regular and recursive lock acquisitions can now be interrupted Antoine Pitrou <solipsis@pitrou.net> parents: 65205 diff changeset	346 CHECK_STATUS("sem_trywait");
b750c45a772c Issue #8844: Regular and recursive lock acquisitions can now be interrupted Antoine Pitrou <solipsis@pitrou.net> parents: 65205 diff changeset	347 }
b750c45a772c Issue #8844: Regular and recursive lock acquisitions can now be interrupted Antoine Pitrou <solipsis@pitrou.net> parents: 65205 diff changeset	348 else {
b750c45a772c Issue #8844: Regular and recursive lock acquisitions can now be interrupted Antoine Pitrou <solipsis@pitrou.net> parents: 65205 diff changeset	349 CHECK_STATUS("sem_wait");
b750c45a772c Issue #8844: Regular and recursive lock acquisitions can now be interrupted Antoine Pitrou <solipsis@pitrou.net> parents: 65205 diff changeset	350 }
61467 f197407bdba2 Recorded merge of revisions 81032 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 39442 diff changeset	351 }
22339 6c3e32357d91 Patch #525532: Add support for POSIX semaphores. Martin v. Löwis <martin@v.loewis.de> parents: 21766 diff changeset	352
66946 b750c45a772c Issue #8844: Regular and recursive lock acquisitions can now be interrupted Antoine Pitrou <solipsis@pitrou.net> parents: 65205 diff changeset	353 if (status == 0) {
b750c45a772c Issue #8844: Regular and recursive lock acquisitions can now be interrupted Antoine Pitrou <solipsis@pitrou.net> parents: 65205 diff changeset	354 success = PY_LOCK_ACQUIRED;
b750c45a772c Issue #8844: Regular and recursive lock acquisitions can now be interrupted Antoine Pitrou <solipsis@pitrou.net> parents: 65205 diff changeset	355 } else if (intr_flag && status == EINTR) {
b750c45a772c Issue #8844: Regular and recursive lock acquisitions can now be interrupted Antoine Pitrou <solipsis@pitrou.net> parents: 65205 diff changeset	356 success = PY_LOCK_INTR;
b750c45a772c Issue #8844: Regular and recursive lock acquisitions can now be interrupted Antoine Pitrou <solipsis@pitrou.net> parents: 65205 diff changeset	357 } else {
b750c45a772c Issue #8844: Regular and recursive lock acquisitions can now be interrupted Antoine Pitrou <solipsis@pitrou.net> parents: 65205 diff changeset	358 success = PY_LOCK_FAILURE;
b750c45a772c Issue #8844: Regular and recursive lock acquisitions can now be interrupted Antoine Pitrou <solipsis@pitrou.net> parents: 65205 diff changeset	359 }
61467 f197407bdba2 Recorded merge of revisions 81032 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 39442 diff changeset	360
66946 b750c45a772c Issue #8844: Regular and recursive lock acquisitions can now be interrupted Antoine Pitrou <solipsis@pitrou.net> parents: 65205 diff changeset	361 dprintf(("PyThread_acquire_lock_timed(%p, %lld, %d) -> %d\n",
b750c45a772c Issue #8844: Regular and recursive lock acquisitions can now be interrupted Antoine Pitrou <solipsis@pitrou.net> parents: 65205 diff changeset	362 lock, microseconds, intr_flag, success));
61467 f197407bdba2 Recorded merge of revisions 81032 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 39442 diff changeset	363 return success;
22339 6c3e32357d91 Patch #525532: Add support for POSIX semaphores. Martin v. Löwis <martin@v.loewis.de> parents: 21766 diff changeset	364 }
6c3e32357d91 Patch #525532: Add support for POSIX semaphores. Martin v. Löwis <martin@v.loewis.de> parents: 21766 diff changeset	365
61467 f197407bdba2 Recorded merge of revisions 81032 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 39442 diff changeset	366 void
22339 6c3e32357d91 Patch #525532: Add support for POSIX semaphores. Martin v. Löwis <martin@v.loewis.de> parents: 21766 diff changeset	367 PyThread_release_lock(PyThread_type_lock lock)
6c3e32357d91 Patch #525532: Add support for POSIX semaphores. Martin v. Löwis <martin@v.loewis.de> parents: 21766 diff changeset	368 {
61467 f197407bdba2 Recorded merge of revisions 81032 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 39442 diff changeset	369 sem_t thelock = (sem_t )lock;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 39442 diff changeset	370 int status, error = 0;
22339 6c3e32357d91 Patch #525532: Add support for POSIX semaphores. Martin v. Löwis <martin@v.loewis.de> parents: 21766 diff changeset	371
61467 f197407bdba2 Recorded merge of revisions 81032 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 39442 diff changeset	372 dprintf(("PyThread_release_lock(%p) called\n", lock));
22339 6c3e32357d91 Patch #525532: Add support for POSIX semaphores. Martin v. Löwis <martin@v.loewis.de> parents: 21766 diff changeset	373
61467 f197407bdba2 Recorded merge of revisions 81032 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 39442 diff changeset	374 status = sem_post(thelock);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 39442 diff changeset	375 CHECK_STATUS("sem_post");
22339 6c3e32357d91 Patch #525532: Add support for POSIX semaphores. Martin v. Löwis <martin@v.loewis.de> parents: 21766 diff changeset	376 }
6c3e32357d91 Patch #525532: Add support for POSIX semaphores. Martin v. Löwis <martin@v.loewis.de> parents: 21766 diff changeset	377
6c3e32357d91 Patch #525532: Add support for POSIX semaphores. Martin v. Löwis <martin@v.loewis.de> parents: 21766 diff changeset	378 #else /* USE_SEMAPHORES */
6c3e32357d91 Patch #525532: Add support for POSIX semaphores. Martin v. Löwis <martin@v.loewis.de> parents: 21766 diff changeset	379
1628 a9dd2e1ea5c9 Split thread.c into a number of system-specific files. Guido van Rossum <guido@python.org> parents: diff changeset	380 /*
a9dd2e1ea5c9 Split thread.c into a number of system-specific files. Guido van Rossum <guido@python.org> parents: diff changeset	381 * Lock support.
a9dd2e1ea5c9 Split thread.c into a number of system-specific files. Guido van Rossum <guido@python.org> parents: diff changeset	382 */
61467 f197407bdba2 Recorded merge of revisions 81032 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 39442 diff changeset	383 PyThread_type_lock
13658 f79434ee41fa Mass ANSIfication of function definitions. Doesn't cover all 'extern' Thomas Wouters <thomas@python.org> parents: 13256 diff changeset	384 PyThread_allocate_lock(void)
1628 a9dd2e1ea5c9 Split thread.c into a number of system-specific files. Guido van Rossum <guido@python.org> parents: diff changeset	385 {
61467 f197407bdba2 Recorded merge of revisions 81032 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 39442 diff changeset	386 pthread_lock *lock;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 39442 diff changeset	387 int status, error = 0;
1628 a9dd2e1ea5c9 Split thread.c into a number of system-specific files. Guido van Rossum <guido@python.org> parents: diff changeset	388
61467 f197407bdba2 Recorded merge of revisions 81032 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 39442 diff changeset	389 dprintf(("PyThread_allocate_lock called\n"));
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 39442 diff changeset	390 if (!initialized)
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 39442 diff changeset	391 PyThread_init_thread();
1628 a9dd2e1ea5c9 Split thread.c into a number of system-specific files. Guido van Rossum <guido@python.org> parents: diff changeset	392
61467 f197407bdba2 Recorded merge of revisions 81032 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 39442 diff changeset	393 lock = (pthread_lock *) malloc(sizeof(pthread_lock));
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 39442 diff changeset	394 if (lock) {
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 39442 diff changeset	395 memset((void *)lock, '\0', sizeof(pthread_lock));
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 39442 diff changeset	396 lock->locked = 0;
1629 4121afd76d73 Tim's changes; removed some remaining non-functional ifdefs Guido van Rossum <guido@python.org> parents: 1628 diff changeset	397
61467 f197407bdba2 Recorded merge of revisions 81032 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 39442 diff changeset	398 status = pthread_mutex_init(&lock->mut,
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 39442 diff changeset	399 pthread_mutexattr_default);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 39442 diff changeset	400 CHECK_STATUS("pthread_mutex_init");
61466 cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 61184 diff changeset	401 /* Mark the pthread mutex underlying a Python mutex as
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 61184 diff changeset	402 pure happens-before. We can't simply mark the
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 61184 diff changeset	403 Python-level mutex as a mutex because it can be
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 61184 diff changeset	404 acquired and released in different threads, which
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 61184 diff changeset	405 will cause errors. */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 61184 diff changeset	406 _Py_ANNOTATE_PURE_HAPPENS_BEFORE_MUTEX(&lock->mut);
1629 4121afd76d73 Tim's changes; removed some remaining non-functional ifdefs Guido van Rossum <guido@python.org> parents: 1628 diff changeset	407
61467 f197407bdba2 Recorded merge of revisions 81032 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 39442 diff changeset	408 status = pthread_cond_init(&lock->lock_released,
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 39442 diff changeset	409 pthread_condattr_default);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 39442 diff changeset	410 CHECK_STATUS("pthread_cond_init");
1629 4121afd76d73 Tim's changes; removed some remaining non-functional ifdefs Guido van Rossum <guido@python.org> parents: 1628 diff changeset	411
61467 f197407bdba2 Recorded merge of revisions 81032 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 39442 diff changeset	412 if (error) {
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 39442 diff changeset	413 free((void *)lock);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 39442 diff changeset	414 lock = 0;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 39442 diff changeset	415 }
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 39442 diff changeset	416 }
1628 a9dd2e1ea5c9 Split thread.c into a number of system-specific files. Guido van Rossum <guido@python.org> parents: diff changeset	417
61467 f197407bdba2 Recorded merge of revisions 81032 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 39442 diff changeset	418 dprintf(("PyThread_allocate_lock() -> %p\n", lock));
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 39442 diff changeset	419 return (PyThread_type_lock) lock;
1628 a9dd2e1ea5c9 Split thread.c into a number of system-specific files. Guido van Rossum <guido@python.org> parents: diff changeset	420 }
a9dd2e1ea5c9 Split thread.c into a number of system-specific files. Guido van Rossum <guido@python.org> parents: diff changeset	421
61467 f197407bdba2 Recorded merge of revisions 81032 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 39442 diff changeset	422 void
13658 f79434ee41fa Mass ANSIfication of function definitions. Doesn't cover all 'extern' Thomas Wouters <thomas@python.org> parents: 13256 diff changeset	423 PyThread_free_lock(PyThread_type_lock lock)
1628 a9dd2e1ea5c9 Split thread.c into a number of system-specific files. Guido van Rossum <guido@python.org> parents: diff changeset	424 {
61467 f197407bdba2 Recorded merge of revisions 81032 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 39442 diff changeset	425 pthread_lock thelock = (pthread_lock )lock;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 39442 diff changeset	426 int status, error = 0;
1629 4121afd76d73 Tim's changes; removed some remaining non-functional ifdefs Guido van Rossum <guido@python.org> parents: 1628 diff changeset	427
61467 f197407bdba2 Recorded merge of revisions 81032 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 39442 diff changeset	428 dprintf(("PyThread_free_lock(%p) called\n", lock));
1629 4121afd76d73 Tim's changes; removed some remaining non-functional ifdefs Guido van Rossum <guido@python.org> parents: 1628 diff changeset	429
61467 f197407bdba2 Recorded merge of revisions 81032 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 39442 diff changeset	430 status = pthread_mutex_destroy( &thelock->mut );
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 39442 diff changeset	431 CHECK_STATUS("pthread_mutex_destroy");
1629 4121afd76d73 Tim's changes; removed some remaining non-functional ifdefs Guido van Rossum <guido@python.org> parents: 1628 diff changeset	432
61467 f197407bdba2 Recorded merge of revisions 81032 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 39442 diff changeset	433 status = pthread_cond_destroy( &thelock->lock_released );
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 39442 diff changeset	434 CHECK_STATUS("pthread_cond_destroy");
1629 4121afd76d73 Tim's changes; removed some remaining non-functional ifdefs Guido van Rossum <guido@python.org> parents: 1628 diff changeset	435
61467 f197407bdba2 Recorded merge of revisions 81032 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 39442 diff changeset	436 free((void *)thelock);
1628 a9dd2e1ea5c9 Split thread.c into a number of system-specific files. Guido van Rossum <guido@python.org> parents: diff changeset	437 }
a9dd2e1ea5c9 Split thread.c into a number of system-specific files. Guido van Rossum <guido@python.org> parents: diff changeset	438
66946 b750c45a772c Issue #8844: Regular and recursive lock acquisitions can now be interrupted Antoine Pitrou <solipsis@pitrou.net> parents: 65205 diff changeset	439 PyLockStatus
b750c45a772c Issue #8844: Regular and recursive lock acquisitions can now be interrupted Antoine Pitrou <solipsis@pitrou.net> parents: 65205 diff changeset	440 PyThread_acquire_lock_timed(PyThread_type_lock lock, PY_TIMEOUT_T microseconds,
b750c45a772c Issue #8844: Regular and recursive lock acquisitions can now be interrupted Antoine Pitrou <solipsis@pitrou.net> parents: 65205 diff changeset	441 int intr_flag)
1628 a9dd2e1ea5c9 Split thread.c into a number of system-specific files. Guido van Rossum <guido@python.org> parents: diff changeset	442 {
66946 b750c45a772c Issue #8844: Regular and recursive lock acquisitions can now be interrupted Antoine Pitrou <solipsis@pitrou.net> parents: 65205 diff changeset	443 PyLockStatus success;
61467 f197407bdba2 Recorded merge of revisions 81032 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 39442 diff changeset	444 pthread_lock thelock = (pthread_lock )lock;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 39442 diff changeset	445 int status, error = 0;
1628 a9dd2e1ea5c9 Split thread.c into a number of system-specific files. Guido van Rossum <guido@python.org> parents: diff changeset	446
66946 b750c45a772c Issue #8844: Regular and recursive lock acquisitions can now be interrupted Antoine Pitrou <solipsis@pitrou.net> parents: 65205 diff changeset	447 dprintf(("PyThread_acquire_lock_timed(%p, %lld, %d) called\n",
b750c45a772c Issue #8844: Regular and recursive lock acquisitions can now be interrupted Antoine Pitrou <solipsis@pitrou.net> parents: 65205 diff changeset	448 lock, microseconds, intr_flag));
1629 4121afd76d73 Tim's changes; removed some remaining non-functional ifdefs Guido van Rossum <guido@python.org> parents: 1628 diff changeset	449
61467 f197407bdba2 Recorded merge of revisions 81032 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 39442 diff changeset	450 status = pthread_mutex_lock( &thelock->mut );
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 39442 diff changeset	451 CHECK_STATUS("pthread_mutex_lock[1]");
1629 4121afd76d73 Tim's changes; removed some remaining non-functional ifdefs Guido van Rossum <guido@python.org> parents: 1628 diff changeset	452
66946 b750c45a772c Issue #8844: Regular and recursive lock acquisitions can now be interrupted Antoine Pitrou <solipsis@pitrou.net> parents: 65205 diff changeset	453 if (thelock->locked == 0) {
b750c45a772c Issue #8844: Regular and recursive lock acquisitions can now be interrupted Antoine Pitrou <solipsis@pitrou.net> parents: 65205 diff changeset	454 success = PY_LOCK_ACQUIRED;
b750c45a772c Issue #8844: Regular and recursive lock acquisitions can now be interrupted Antoine Pitrou <solipsis@pitrou.net> parents: 65205 diff changeset	455 } else if (microseconds == 0) {
b750c45a772c Issue #8844: Regular and recursive lock acquisitions can now be interrupted Antoine Pitrou <solipsis@pitrou.net> parents: 65205 diff changeset	456 success = PY_LOCK_FAILURE;
b750c45a772c Issue #8844: Regular and recursive lock acquisitions can now be interrupted Antoine Pitrou <solipsis@pitrou.net> parents: 65205 diff changeset	457 } else {
61466 cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 61184 diff changeset	458 struct timespec ts;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 61184 diff changeset	459 if (microseconds > 0)
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 61184 diff changeset	460 MICROSECONDS_TO_TIMESPEC(microseconds, ts);
61467 f197407bdba2 Recorded merge of revisions 81032 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 39442 diff changeset	461 /* continue trying until we get the lock */
1628 a9dd2e1ea5c9 Split thread.c into a number of system-specific files. Guido van Rossum <guido@python.org> parents: diff changeset	462
61467 f197407bdba2 Recorded merge of revisions 81032 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 39442 diff changeset	463 /* mut must be locked by me -- part of the condition
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 39442 diff changeset	464 * protocol */
66946 b750c45a772c Issue #8844: Regular and recursive lock acquisitions can now be interrupted Antoine Pitrou <solipsis@pitrou.net> parents: 65205 diff changeset	465 success = PY_LOCK_FAILURE;
b750c45a772c Issue #8844: Regular and recursive lock acquisitions can now be interrupted Antoine Pitrou <solipsis@pitrou.net> parents: 65205 diff changeset	466 while (success == PY_LOCK_FAILURE) {
61466 cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 61184 diff changeset	467 if (microseconds > 0) {
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 61184 diff changeset	468 status = pthread_cond_timedwait(
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 61184 diff changeset	469 &thelock->lock_released,
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 61184 diff changeset	470 &thelock->mut, &ts);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 61184 diff changeset	471 if (status == ETIMEDOUT)
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 61184 diff changeset	472 break;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 61184 diff changeset	473 CHECK_STATUS("pthread_cond_timed_wait");
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 61184 diff changeset	474 }
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 61184 diff changeset	475 else {
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 61184 diff changeset	476 status = pthread_cond_wait(
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 61184 diff changeset	477 &thelock->lock_released,
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 61184 diff changeset	478 &thelock->mut);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 61184 diff changeset	479 CHECK_STATUS("pthread_cond_wait");
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 61184 diff changeset	480 }
66946 b750c45a772c Issue #8844: Regular and recursive lock acquisitions can now be interrupted Antoine Pitrou <solipsis@pitrou.net> parents: 65205 diff changeset	481
b750c45a772c Issue #8844: Regular and recursive lock acquisitions can now be interrupted Antoine Pitrou <solipsis@pitrou.net> parents: 65205 diff changeset	482 if (intr_flag && status == 0 && thelock->locked) {
b750c45a772c Issue #8844: Regular and recursive lock acquisitions can now be interrupted Antoine Pitrou <solipsis@pitrou.net> parents: 65205 diff changeset	483 /* We were woken up, but didn't get the lock. We probably received
b750c45a772c Issue #8844: Regular and recursive lock acquisitions can now be interrupted Antoine Pitrou <solipsis@pitrou.net> parents: 65205 diff changeset	484 * a signal. Return PY_LOCK_INTR to allow the caller to handle
b750c45a772c Issue #8844: Regular and recursive lock acquisitions can now be interrupted Antoine Pitrou <solipsis@pitrou.net> parents: 65205 diff changeset	485 * it and retry. */
b750c45a772c Issue #8844: Regular and recursive lock acquisitions can now be interrupted Antoine Pitrou <solipsis@pitrou.net> parents: 65205 diff changeset	486 success = PY_LOCK_INTR;
b750c45a772c Issue #8844: Regular and recursive lock acquisitions can now be interrupted Antoine Pitrou <solipsis@pitrou.net> parents: 65205 diff changeset	487 break;
b750c45a772c Issue #8844: Regular and recursive lock acquisitions can now be interrupted Antoine Pitrou <solipsis@pitrou.net> parents: 65205 diff changeset	488 } else if (status == 0 && !thelock->locked) {
b750c45a772c Issue #8844: Regular and recursive lock acquisitions can now be interrupted Antoine Pitrou <solipsis@pitrou.net> parents: 65205 diff changeset	489 success = PY_LOCK_ACQUIRED;
b750c45a772c Issue #8844: Regular and recursive lock acquisitions can now be interrupted Antoine Pitrou <solipsis@pitrou.net> parents: 65205 diff changeset	490 } else {
b750c45a772c Issue #8844: Regular and recursive lock acquisitions can now be interrupted Antoine Pitrou <solipsis@pitrou.net> parents: 65205 diff changeset	491 success = PY_LOCK_FAILURE;
b750c45a772c Issue #8844: Regular and recursive lock acquisitions can now be interrupted Antoine Pitrou <solipsis@pitrou.net> parents: 65205 diff changeset	492 }
61467 f197407bdba2 Recorded merge of revisions 81032 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 39442 diff changeset	493 }
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 39442 diff changeset	494 }
66946 b750c45a772c Issue #8844: Regular and recursive lock acquisitions can now be interrupted Antoine Pitrou <solipsis@pitrou.net> parents: 65205 diff changeset	495 if (success == PY_LOCK_ACQUIRED) thelock->locked = 1;
61467 f197407bdba2 Recorded merge of revisions 81032 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 39442 diff changeset	496 status = pthread_mutex_unlock( &thelock->mut );
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 39442 diff changeset	497 CHECK_STATUS("pthread_mutex_unlock[1]");
28673 c1ba50790c83 Patch #711835: Remove unnecessary lock operations. Will backport to 2.2. Martin v. Löwis <martin@v.loewis.de> parents: 27320 diff changeset	498
66946 b750c45a772c Issue #8844: Regular and recursive lock acquisitions can now be interrupted Antoine Pitrou <solipsis@pitrou.net> parents: 65205 diff changeset	499 if (error) success = PY_LOCK_FAILURE;
b750c45a772c Issue #8844: Regular and recursive lock acquisitions can now be interrupted Antoine Pitrou <solipsis@pitrou.net> parents: 65205 diff changeset	500 dprintf(("PyThread_acquire_lock_timed(%p, %lld, %d) -> %d\n",
b750c45a772c Issue #8844: Regular and recursive lock acquisitions can now be interrupted Antoine Pitrou <solipsis@pitrou.net> parents: 65205 diff changeset	501 lock, microseconds, intr_flag, success));
61467 f197407bdba2 Recorded merge of revisions 81032 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 39442 diff changeset	502 return success;
1628 a9dd2e1ea5c9 Split thread.c into a number of system-specific files. Guido van Rossum <guido@python.org> parents: diff changeset	503 }
a9dd2e1ea5c9 Split thread.c into a number of system-specific files. Guido van Rossum <guido@python.org> parents: diff changeset	504
61467 f197407bdba2 Recorded merge of revisions 81032 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 39442 diff changeset	505 void
13658 f79434ee41fa Mass ANSIfication of function definitions. Doesn't cover all 'extern' Thomas Wouters <thomas@python.org> parents: 13256 diff changeset	506 PyThread_release_lock(PyThread_type_lock lock)
1628 a9dd2e1ea5c9 Split thread.c into a number of system-specific files. Guido van Rossum <guido@python.org> parents: diff changeset	507 {
61467 f197407bdba2 Recorded merge of revisions 81032 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 39442 diff changeset	508 pthread_lock thelock = (pthread_lock )lock;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 39442 diff changeset	509 int status, error = 0;
1629 4121afd76d73 Tim's changes; removed some remaining non-functional ifdefs Guido van Rossum <guido@python.org> parents: 1628 diff changeset	510
61467 f197407bdba2 Recorded merge of revisions 81032 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 39442 diff changeset	511 dprintf(("PyThread_release_lock(%p) called\n", lock));
1629 4121afd76d73 Tim's changes; removed some remaining non-functional ifdefs Guido van Rossum <guido@python.org> parents: 1628 diff changeset	512
61467 f197407bdba2 Recorded merge of revisions 81032 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 39442 diff changeset	513 status = pthread_mutex_lock( &thelock->mut );
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 39442 diff changeset	514 CHECK_STATUS("pthread_mutex_lock[3]");
1628 a9dd2e1ea5c9 Split thread.c into a number of system-specific files. Guido van Rossum <guido@python.org> parents: diff changeset	515
61467 f197407bdba2 Recorded merge of revisions 81032 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 39442 diff changeset	516 thelock->locked = 0;
1628 a9dd2e1ea5c9 Split thread.c into a number of system-specific files. Guido van Rossum <guido@python.org> parents: diff changeset	517
61467 f197407bdba2 Recorded merge of revisions 81032 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 39442 diff changeset	518 status = pthread_mutex_unlock( &thelock->mut );
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 39442 diff changeset	519 CHECK_STATUS("pthread_mutex_unlock[3]");
1629 4121afd76d73 Tim's changes; removed some remaining non-functional ifdefs Guido van Rossum <guido@python.org> parents: 1628 diff changeset	520
61467 f197407bdba2 Recorded merge of revisions 81032 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 39442 diff changeset	521 /* wake up someone (anyone, if any) waiting on the lock */
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 39442 diff changeset	522 status = pthread_cond_signal( &thelock->lock_released );
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 39442 diff changeset	523 CHECK_STATUS("pthread_cond_signal");
1628 a9dd2e1ea5c9 Split thread.c into a number of system-specific files. Guido van Rossum <guido@python.org> parents: diff changeset	524 }
22339 6c3e32357d91 Patch #525532: Add support for POSIX semaphores. Martin v. Löwis <martin@v.loewis.de> parents: 21766 diff changeset	525
6c3e32357d91 Patch #525532: Add support for POSIX semaphores. Martin v. Löwis <martin@v.loewis.de> parents: 21766 diff changeset	526 #endif /* USE_SEMAPHORES */
39442 654c380cf8b9 Merged revisions 46753-51188 via svnmerge from Thomas Wouters <thomas@python.org> parents: 37879 diff changeset	527
66946 b750c45a772c Issue #8844: Regular and recursive lock acquisitions can now be interrupted Antoine Pitrou <solipsis@pitrou.net> parents: 65205 diff changeset	528 int
b750c45a772c Issue #8844: Regular and recursive lock acquisitions can now be interrupted Antoine Pitrou <solipsis@pitrou.net> parents: 65205 diff changeset	529 PyThread_acquire_lock(PyThread_type_lock lock, int waitflag)
b750c45a772c Issue #8844: Regular and recursive lock acquisitions can now be interrupted Antoine Pitrou <solipsis@pitrou.net> parents: 65205 diff changeset	530 {
b750c45a772c Issue #8844: Regular and recursive lock acquisitions can now be interrupted Antoine Pitrou <solipsis@pitrou.net> parents: 65205 diff changeset	531 return PyThread_acquire_lock_timed(lock, waitflag ? -1 : 0, /intr_flag=/0);
b750c45a772c Issue #8844: Regular and recursive lock acquisitions can now be interrupted Antoine Pitrou <solipsis@pitrou.net> parents: 65205 diff changeset	532 }
b750c45a772c Issue #8844: Regular and recursive lock acquisitions can now be interrupted Antoine Pitrou <solipsis@pitrou.net> parents: 65205 diff changeset	533
39442 654c380cf8b9 Merged revisions 46753-51188 via svnmerge from Thomas Wouters <thomas@python.org> parents: 37879 diff changeset	534 /* set the thread stack size.
654c380cf8b9 Merged revisions 46753-51188 via svnmerge from Thomas Wouters <thomas@python.org> parents: 37879 diff changeset	535 * Return 0 if size is valid, -1 if size is invalid,
654c380cf8b9 Merged revisions 46753-51188 via svnmerge from Thomas Wouters <thomas@python.org> parents: 37879 diff changeset	536 * -2 if setting stack size is not supported.
654c380cf8b9 Merged revisions 46753-51188 via svnmerge from Thomas Wouters <thomas@python.org> parents: 37879 diff changeset	537 */
654c380cf8b9 Merged revisions 46753-51188 via svnmerge from Thomas Wouters <thomas@python.org> parents: 37879 diff changeset	538 static int
654c380cf8b9 Merged revisions 46753-51188 via svnmerge from Thomas Wouters <thomas@python.org> parents: 37879 diff changeset	539 _pythread_pthread_set_stacksize(size_t size)
654c380cf8b9 Merged revisions 46753-51188 via svnmerge from Thomas Wouters <thomas@python.org> parents: 37879 diff changeset	540 {
654c380cf8b9 Merged revisions 46753-51188 via svnmerge from Thomas Wouters <thomas@python.org> parents: 37879 diff changeset	541 #if defined(THREAD_STACK_SIZE)
61467 f197407bdba2 Recorded merge of revisions 81032 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 39442 diff changeset	542 pthread_attr_t attrs;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 39442 diff changeset	543 size_t tss_min;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 39442 diff changeset	544 int rc = 0;
39442 654c380cf8b9 Merged revisions 46753-51188 via svnmerge from Thomas Wouters <thomas@python.org> parents: 37879 diff changeset	545 #endif
654c380cf8b9 Merged revisions 46753-51188 via svnmerge from Thomas Wouters <thomas@python.org> parents: 37879 diff changeset	546
61467 f197407bdba2 Recorded merge of revisions 81032 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 39442 diff changeset	547 /* set to default */
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 39442 diff changeset	548 if (size == 0) {
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 39442 diff changeset	549 _pythread_stacksize = 0;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 39442 diff changeset	550 return 0;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 39442 diff changeset	551 }
39442 654c380cf8b9 Merged revisions 46753-51188 via svnmerge from Thomas Wouters <thomas@python.org> parents: 37879 diff changeset	552
654c380cf8b9 Merged revisions 46753-51188 via svnmerge from Thomas Wouters <thomas@python.org> parents: 37879 diff changeset	553 #if defined(THREAD_STACK_SIZE)
654c380cf8b9 Merged revisions 46753-51188 via svnmerge from Thomas Wouters <thomas@python.org> parents: 37879 diff changeset	554 #if defined(PTHREAD_STACK_MIN)
61467 f197407bdba2 Recorded merge of revisions 81032 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 39442 diff changeset	555 tss_min = PTHREAD_STACK_MIN > THREAD_STACK_MIN ? PTHREAD_STACK_MIN
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 39442 diff changeset	556 : THREAD_STACK_MIN;
39442 654c380cf8b9 Merged revisions 46753-51188 via svnmerge from Thomas Wouters <thomas@python.org> parents: 37879 diff changeset	557 #else
61467 f197407bdba2 Recorded merge of revisions 81032 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 39442 diff changeset	558 tss_min = THREAD_STACK_MIN;
39442 654c380cf8b9 Merged revisions 46753-51188 via svnmerge from Thomas Wouters <thomas@python.org> parents: 37879 diff changeset	559 #endif
61467 f197407bdba2 Recorded merge of revisions 81032 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 39442 diff changeset	560 if (size >= tss_min) {
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 39442 diff changeset	561 /* validate stack size by setting thread attribute */
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 39442 diff changeset	562 if (pthread_attr_init(&attrs) == 0) {
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 39442 diff changeset	563 rc = pthread_attr_setstacksize(&attrs, size);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 39442 diff changeset	564 pthread_attr_destroy(&attrs);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 39442 diff changeset	565 if (rc == 0) {
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 39442 diff changeset	566 _pythread_stacksize = size;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 39442 diff changeset	567 return 0;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 39442 diff changeset	568 }
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 39442 diff changeset	569 }
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 39442 diff changeset	570 }
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 39442 diff changeset	571 return -1;
39442 654c380cf8b9 Merged revisions 46753-51188 via svnmerge from Thomas Wouters <thomas@python.org> parents: 37879 diff changeset	572 #else
61467 f197407bdba2 Recorded merge of revisions 81032 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 39442 diff changeset	573 return -2;
39442 654c380cf8b9 Merged revisions 46753-51188 via svnmerge from Thomas Wouters <thomas@python.org> parents: 37879 diff changeset	574 #endif
654c380cf8b9 Merged revisions 46753-51188 via svnmerge from Thomas Wouters <thomas@python.org> parents: 37879 diff changeset	575 }
654c380cf8b9 Merged revisions 46753-51188 via svnmerge from Thomas Wouters <thomas@python.org> parents: 37879 diff changeset	576
61467 f197407bdba2 Recorded merge of revisions 81032 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 39442 diff changeset	577 #define THREAD_SET_STACKSIZE(x) _pythread_pthread_set_stacksize(x)
64844 8e428b8e7d81 issue 9786 Native TLS support for pthreads Kristján Valur Jónsson <kristjan@ccpgames.com> parents: 61466 diff changeset	578
8e428b8e7d81 issue 9786 Native TLS support for pthreads Kristján Valur Jónsson <kristjan@ccpgames.com> parents: 61466 diff changeset	579 #define Py_HAVE_NATIVE_TLS
8e428b8e7d81 issue 9786 Native TLS support for pthreads Kristján Valur Jónsson <kristjan@ccpgames.com> parents: 61466 diff changeset	580
8e428b8e7d81 issue 9786 Native TLS support for pthreads Kristján Valur Jónsson <kristjan@ccpgames.com> parents: 61466 diff changeset	581 int
8e428b8e7d81 issue 9786 Native TLS support for pthreads Kristján Valur Jónsson <kristjan@ccpgames.com> parents: 61466 diff changeset	582 PyThread_create_key(void)
8e428b8e7d81 issue 9786 Native TLS support for pthreads Kristján Valur Jónsson <kristjan@ccpgames.com> parents: 61466 diff changeset	583 {
8e428b8e7d81 issue 9786 Native TLS support for pthreads Kristján Valur Jónsson <kristjan@ccpgames.com> parents: 61466 diff changeset	584 pthread_key_t key;
8e428b8e7d81 issue 9786 Native TLS support for pthreads Kristján Valur Jónsson <kristjan@ccpgames.com> parents: 61466 diff changeset	585 int fail = pthread_key_create(&key, NULL);
8e428b8e7d81 issue 9786 Native TLS support for pthreads Kristján Valur Jónsson <kristjan@ccpgames.com> parents: 61466 diff changeset	586 return fail ? -1 : key;
8e428b8e7d81 issue 9786 Native TLS support for pthreads Kristján Valur Jónsson <kristjan@ccpgames.com> parents: 61466 diff changeset	587 }
8e428b8e7d81 issue 9786 Native TLS support for pthreads Kristján Valur Jónsson <kristjan@ccpgames.com> parents: 61466 diff changeset	588
8e428b8e7d81 issue 9786 Native TLS support for pthreads Kristján Valur Jónsson <kristjan@ccpgames.com> parents: 61466 diff changeset	589 void
8e428b8e7d81 issue 9786 Native TLS support for pthreads Kristján Valur Jónsson <kristjan@ccpgames.com> parents: 61466 diff changeset	590 PyThread_delete_key(int key)
8e428b8e7d81 issue 9786 Native TLS support for pthreads Kristján Valur Jónsson <kristjan@ccpgames.com> parents: 61466 diff changeset	591 {
8e428b8e7d81 issue 9786 Native TLS support for pthreads Kristján Valur Jónsson <kristjan@ccpgames.com> parents: 61466 diff changeset	592 pthread_key_delete(key);
8e428b8e7d81 issue 9786 Native TLS support for pthreads Kristján Valur Jónsson <kristjan@ccpgames.com> parents: 61466 diff changeset	593 }
8e428b8e7d81 issue 9786 Native TLS support for pthreads Kristján Valur Jónsson <kristjan@ccpgames.com> parents: 61466 diff changeset	594
8e428b8e7d81 issue 9786 Native TLS support for pthreads Kristján Valur Jónsson <kristjan@ccpgames.com> parents: 61466 diff changeset	595 void
8e428b8e7d81 issue 9786 Native TLS support for pthreads Kristján Valur Jónsson <kristjan@ccpgames.com> parents: 61466 diff changeset	596 PyThread_delete_key_value(int key)
8e428b8e7d81 issue 9786 Native TLS support for pthreads Kristján Valur Jónsson <kristjan@ccpgames.com> parents: 61466 diff changeset	597 {
8e428b8e7d81 issue 9786 Native TLS support for pthreads Kristján Valur Jónsson <kristjan@ccpgames.com> parents: 61466 diff changeset	598 pthread_setspecific(key, NULL);
8e428b8e7d81 issue 9786 Native TLS support for pthreads Kristján Valur Jónsson <kristjan@ccpgames.com> parents: 61466 diff changeset	599 }
8e428b8e7d81 issue 9786 Native TLS support for pthreads Kristján Valur Jónsson <kristjan@ccpgames.com> parents: 61466 diff changeset	600
8e428b8e7d81 issue 9786 Native TLS support for pthreads Kristján Valur Jónsson <kristjan@ccpgames.com> parents: 61466 diff changeset	601 int
8e428b8e7d81 issue 9786 Native TLS support for pthreads Kristján Valur Jónsson <kristjan@ccpgames.com> parents: 61466 diff changeset	602 PyThread_set_key_value(int key, void *value)
8e428b8e7d81 issue 9786 Native TLS support for pthreads Kristján Valur Jónsson <kristjan@ccpgames.com> parents: 61466 diff changeset	603 {
8e428b8e7d81 issue 9786 Native TLS support for pthreads Kristján Valur Jónsson <kristjan@ccpgames.com> parents: 61466 diff changeset	604 int fail;
8e428b8e7d81 issue 9786 Native TLS support for pthreads Kristján Valur Jónsson <kristjan@ccpgames.com> parents: 61466 diff changeset	605 void *oldValue = pthread_getspecific(key);
8e428b8e7d81 issue 9786 Native TLS support for pthreads Kristján Valur Jónsson <kristjan@ccpgames.com> parents: 61466 diff changeset	606 if (oldValue != NULL)
8e428b8e7d81 issue 9786 Native TLS support for pthreads Kristján Valur Jónsson <kristjan@ccpgames.com> parents: 61466 diff changeset	607 return 0;
8e428b8e7d81 issue 9786 Native TLS support for pthreads Kristján Valur Jónsson <kristjan@ccpgames.com> parents: 61466 diff changeset	608 fail = pthread_setspecific(key, value);
8e428b8e7d81 issue 9786 Native TLS support for pthreads Kristján Valur Jónsson <kristjan@ccpgames.com> parents: 61466 diff changeset	609 return fail ? -1 : 0;
8e428b8e7d81 issue 9786 Native TLS support for pthreads Kristján Valur Jónsson <kristjan@ccpgames.com> parents: 61466 diff changeset	610 }
8e428b8e7d81 issue 9786 Native TLS support for pthreads Kristján Valur Jónsson <kristjan@ccpgames.com> parents: 61466 diff changeset	611
8e428b8e7d81 issue 9786 Native TLS support for pthreads Kristján Valur Jónsson <kristjan@ccpgames.com> parents: 61466 diff changeset	612 void *
8e428b8e7d81 issue 9786 Native TLS support for pthreads Kristján Valur Jónsson <kristjan@ccpgames.com> parents: 61466 diff changeset	613 PyThread_get_key_value(int key)
8e428b8e7d81 issue 9786 Native TLS support for pthreads Kristján Valur Jónsson <kristjan@ccpgames.com> parents: 61466 diff changeset	614 {
8e428b8e7d81 issue 9786 Native TLS support for pthreads Kristján Valur Jónsson <kristjan@ccpgames.com> parents: 61466 diff changeset	615 return pthread_getspecific(key);
8e428b8e7d81 issue 9786 Native TLS support for pthreads Kristján Valur Jónsson <kristjan@ccpgames.com> parents: 61466 diff changeset	616 }
8e428b8e7d81 issue 9786 Native TLS support for pthreads Kristján Valur Jónsson <kristjan@ccpgames.com> parents: 61466 diff changeset	617
8e428b8e7d81 issue 9786 Native TLS support for pthreads Kristján Valur Jónsson <kristjan@ccpgames.com> parents: 61466 diff changeset	618 void
8e428b8e7d81 issue 9786 Native TLS support for pthreads Kristján Valur Jónsson <kristjan@ccpgames.com> parents: 61466 diff changeset	619 PyThread_ReInitTLS(void)
8e428b8e7d81 issue 9786 Native TLS support for pthreads Kristján Valur Jónsson <kristjan@ccpgames.com> parents: 61466 diff changeset	620 {}

Mercurial > cpython-lru_cache-weakref

annotate Python/thread_pthread.h @ 69888:8752a81ada2d