cpython-lru_cache-weakref: Python/thread

annotate Python/thread_cthread.h @ 5758:bfe9ba74c19e legacy-trunk

Fix problem discovered by Greg McFarlane: when an imported module replaces its own entry in sys.module, reference count errors ensue; even if there is no reference count problem, it would be preferable for the import to yield the new thing in sys.modules anyway (if only because that's what later imports will yield). This opens the road to an official hack to implement a __getattr__ like feature for modules: stick an instance in sys.modules[__name__].

author	Guido van Rossum <guido@python.org>
date	Thu, 10 Jul 1997 18:00:45 +0000
parents	65d2d8e67da3
children	877d23bd5bdc

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 /***********************************************************
2062 d0d0a69b5ca3 Added 1995 to copyright message. Guido van Rossum <guido@python.org> parents: 1651 diff changeset	2 Copyright 1991-1995 by Stichting Mathematisch Centrum, Amsterdam,
d0d0a69b5ca3 Added 1995 to copyright message. Guido van Rossum <guido@python.org> parents: 1651 diff changeset	3 The Netherlands.
1628 a9dd2e1ea5c9 Split thread.c into a number of system-specific files. Guido van Rossum <guido@python.org> parents: diff changeset	4
a9dd2e1ea5c9 Split thread.c into a number of system-specific files. Guido van Rossum <guido@python.org> parents: diff changeset	5 All Rights Reserved
a9dd2e1ea5c9 Split thread.c into a number of system-specific files. Guido van Rossum <guido@python.org> parents: diff changeset	6
4503 65d2d8e67da3 New permission notice, includes CNRI. Guido van Rossum <guido@python.org> parents: 4371 diff changeset	7 Permission to use, copy, modify, and distribute this software and its
65d2d8e67da3 New permission notice, includes CNRI. Guido van Rossum <guido@python.org> parents: 4371 diff changeset	8 documentation for any purpose and without fee is hereby granted,
1628 a9dd2e1ea5c9 Split thread.c into a number of system-specific files. Guido van Rossum <guido@python.org> parents: diff changeset	9 provided that the above copyright notice appear in all copies and that
4503 65d2d8e67da3 New permission notice, includes CNRI. Guido van Rossum <guido@python.org> parents: 4371 diff changeset	10 both that copyright notice and this permission notice appear in
1628 a9dd2e1ea5c9 Split thread.c into a number of system-specific files. Guido van Rossum <guido@python.org> parents: diff changeset	11 supporting documentation, and that the names of Stichting Mathematisch
4503 65d2d8e67da3 New permission notice, includes CNRI. Guido van Rossum <guido@python.org> parents: 4371 diff changeset	12 Centrum or CWI or Corporation for National Research Initiatives or
65d2d8e67da3 New permission notice, includes CNRI. Guido van Rossum <guido@python.org> parents: 4371 diff changeset	13 CNRI not be used in advertising or publicity pertaining to
65d2d8e67da3 New permission notice, includes CNRI. Guido van Rossum <guido@python.org> parents: 4371 diff changeset	14 distribution of the software without specific, written prior
65d2d8e67da3 New permission notice, includes CNRI. Guido van Rossum <guido@python.org> parents: 4371 diff changeset	15 permission.
1628 a9dd2e1ea5c9 Split thread.c into a number of system-specific files. Guido van Rossum <guido@python.org> parents: diff changeset	16
4503 65d2d8e67da3 New permission notice, includes CNRI. Guido van Rossum <guido@python.org> parents: 4371 diff changeset	17 While CWI is the initial source for this software, a modified version
65d2d8e67da3 New permission notice, includes CNRI. Guido van Rossum <guido@python.org> parents: 4371 diff changeset	18 is made available by the Corporation for National Research Initiatives
65d2d8e67da3 New permission notice, includes CNRI. Guido van Rossum <guido@python.org> parents: 4371 diff changeset	19 (CNRI) at the Internet address ftp://ftp.python.org.
65d2d8e67da3 New permission notice, includes CNRI. Guido van Rossum <guido@python.org> parents: 4371 diff changeset	20
65d2d8e67da3 New permission notice, includes CNRI. Guido van Rossum <guido@python.org> parents: 4371 diff changeset	21 STICHTING MATHEMATISCH CENTRUM AND CNRI DISCLAIM ALL WARRANTIES WITH
65d2d8e67da3 New permission notice, includes CNRI. Guido van Rossum <guido@python.org> parents: 4371 diff changeset	22 REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF
65d2d8e67da3 New permission notice, includes CNRI. Guido van Rossum <guido@python.org> parents: 4371 diff changeset	23 MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL STICHTING MATHEMATISCH
65d2d8e67da3 New permission notice, includes CNRI. Guido van Rossum <guido@python.org> parents: 4371 diff changeset	24 CENTRUM OR CNRI BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL
65d2d8e67da3 New permission notice, includes CNRI. Guido van Rossum <guido@python.org> parents: 4371 diff changeset	25 DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
65d2d8e67da3 New permission notice, includes CNRI. Guido van Rossum <guido@python.org> parents: 4371 diff changeset	26 PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
65d2d8e67da3 New permission notice, includes CNRI. Guido van Rossum <guido@python.org> parents: 4371 diff changeset	27 TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
65d2d8e67da3 New permission notice, includes CNRI. Guido van Rossum <guido@python.org> parents: 4371 diff changeset	28 PERFORMANCE OF THIS SOFTWARE.
1628 a9dd2e1ea5c9 Split thread.c into a number of system-specific files. Guido van Rossum <guido@python.org> parents: diff changeset	29
a9dd2e1ea5c9 Split thread.c into a number of system-specific files. Guido van Rossum <guido@python.org> parents: diff changeset	30 ******************************************************************/
a9dd2e1ea5c9 Split thread.c into a number of system-specific files. Guido van Rossum <guido@python.org> parents: diff changeset	31
3838 5aab3f668e84 Changes needed by NeXT (the only platform that seems to use this). Guido van Rossum <guido@python.org> parents: 2062 diff changeset	32 #include <mach/cthreads.h>
1628 a9dd2e1ea5c9 Split thread.c into a number of system-specific files. Guido van Rossum <guido@python.org> parents: diff changeset	33
a9dd2e1ea5c9 Split thread.c into a number of system-specific files. Guido van Rossum <guido@python.org> parents: diff changeset	34
a9dd2e1ea5c9 Split thread.c into a number of system-specific files. Guido van Rossum <guido@python.org> parents: diff changeset	35 /*
a9dd2e1ea5c9 Split thread.c into a number of system-specific files. Guido van Rossum <guido@python.org> parents: diff changeset	36 * Initialization.
a9dd2e1ea5c9 Split thread.c into a number of system-specific files. Guido van Rossum <guido@python.org> parents: diff changeset	37 */
a9dd2e1ea5c9 Split thread.c into a number of system-specific files. Guido van Rossum <guido@python.org> parents: diff changeset	38 static void _init_thread _P0()
a9dd2e1ea5c9 Split thread.c into a number of system-specific files. Guido van Rossum <guido@python.org> parents: diff changeset	39 {
a9dd2e1ea5c9 Split thread.c into a number of system-specific files. Guido van Rossum <guido@python.org> parents: diff changeset	40 cthread_init();
a9dd2e1ea5c9 Split thread.c into a number of system-specific files. Guido van Rossum <guido@python.org> parents: diff changeset	41 }
a9dd2e1ea5c9 Split thread.c into a number of system-specific files. Guido van Rossum <guido@python.org> parents: diff changeset	42
a9dd2e1ea5c9 Split thread.c into a number of system-specific files. Guido van Rossum <guido@python.org> parents: diff changeset	43 /*
a9dd2e1ea5c9 Split thread.c into a number of system-specific files. Guido van Rossum <guido@python.org> parents: diff changeset	44 * Thread support.
a9dd2e1ea5c9 Split thread.c into a number of system-specific files. Guido van Rossum <guido@python.org> parents: diff changeset	45 */
a9dd2e1ea5c9 Split thread.c into a number of system-specific files. Guido van Rossum <guido@python.org> parents: diff changeset	46 int start_new_thread _P2(func, void (func) _P((void )), arg, void *arg)
a9dd2e1ea5c9 Split thread.c into a number of system-specific files. Guido van Rossum <guido@python.org> parents: diff changeset	47 {
a9dd2e1ea5c9 Split thread.c into a number of system-specific files. Guido van Rossum <guido@python.org> parents: diff changeset	48 int success = 0; /* init not needed when SOLARIS_THREADS and */
a9dd2e1ea5c9 Split thread.c into a number of system-specific files. Guido van Rossum <guido@python.org> parents: diff changeset	49 /* C_THREADS implemented properly */
a9dd2e1ea5c9 Split thread.c into a number of system-specific files. Guido van Rossum <guido@python.org> parents: diff changeset	50
a9dd2e1ea5c9 Split thread.c into a number of system-specific files. Guido van Rossum <guido@python.org> parents: diff changeset	51 dprintf(("start_new_thread called\n"));
a9dd2e1ea5c9 Split thread.c into a number of system-specific files. Guido van Rossum <guido@python.org> parents: diff changeset	52 if (!initialized)
a9dd2e1ea5c9 Split thread.c into a number of system-specific files. Guido van Rossum <guido@python.org> parents: diff changeset	53 init_thread();
3838 5aab3f668e84 Changes needed by NeXT (the only platform that seems to use this). Guido van Rossum <guido@python.org> parents: 2062 diff changeset	54 /* looks like solaris detaches the thread to never rejoin
5aab3f668e84 Changes needed by NeXT (the only platform that seems to use this). Guido van Rossum <guido@python.org> parents: 2062 diff changeset	55 * so well do it here
5aab3f668e84 Changes needed by NeXT (the only platform that seems to use this). Guido van Rossum <guido@python.org> parents: 2062 diff changeset	56 */
5aab3f668e84 Changes needed by NeXT (the only platform that seems to use this). Guido van Rossum <guido@python.org> parents: 2062 diff changeset	57 cthread_detach(cthread_fork((cthread_fn_t) func, arg));
1628 a9dd2e1ea5c9 Split thread.c into a number of system-specific files. Guido van Rossum <guido@python.org> parents: diff changeset	58 return success < 0 ? 0 : 1;
a9dd2e1ea5c9 Split thread.c into a number of system-specific files. Guido van Rossum <guido@python.org> parents: diff changeset	59 }
a9dd2e1ea5c9 Split thread.c into a number of system-specific files. Guido van Rossum <guido@python.org> parents: diff changeset	60
1651 7e5f97bab1e6 ceval.c: dict of local mapping is now a tuple Guido van Rossum <guido@python.org> parents: 1629 diff changeset	61 long get_thread_ident _P0()
7e5f97bab1e6 ceval.c: dict of local mapping is now a tuple Guido van Rossum <guido@python.org> parents: 1629 diff changeset	62 {
7e5f97bab1e6 ceval.c: dict of local mapping is now a tuple Guido van Rossum <guido@python.org> parents: 1629 diff changeset	63 if (!initialized)
7e5f97bab1e6 ceval.c: dict of local mapping is now a tuple Guido van Rossum <guido@python.org> parents: 1629 diff changeset	64 init_thread();
3838 5aab3f668e84 Changes needed by NeXT (the only platform that seems to use this). Guido van Rossum <guido@python.org> parents: 2062 diff changeset	65 return (long) cthread_self();
1651 7e5f97bab1e6 ceval.c: dict of local mapping is now a tuple Guido van Rossum <guido@python.org> parents: 1629 diff changeset	66 }
7e5f97bab1e6 ceval.c: dict of local mapping is now a tuple Guido van Rossum <guido@python.org> parents: 1629 diff changeset	67
1628 a9dd2e1ea5c9 Split thread.c into a number of system-specific files. Guido van Rossum <guido@python.org> parents: diff changeset	68 static void do_exit_thread _P1(no_cleanup, int no_cleanup)
a9dd2e1ea5c9 Split thread.c into a number of system-specific files. Guido van Rossum <guido@python.org> parents: diff changeset	69 {
a9dd2e1ea5c9 Split thread.c into a number of system-specific files. Guido van Rossum <guido@python.org> parents: diff changeset	70 dprintf(("exit_thread called\n"));
a9dd2e1ea5c9 Split thread.c into a number of system-specific files. Guido van Rossum <guido@python.org> parents: diff changeset	71 if (!initialized)
a9dd2e1ea5c9 Split thread.c into a number of system-specific files. Guido van Rossum <guido@python.org> parents: diff changeset	72 if (no_cleanup)
a9dd2e1ea5c9 Split thread.c into a number of system-specific files. Guido van Rossum <guido@python.org> parents: diff changeset	73 _exit(0);
a9dd2e1ea5c9 Split thread.c into a number of system-specific files. Guido van Rossum <guido@python.org> parents: diff changeset	74 else
a9dd2e1ea5c9 Split thread.c into a number of system-specific files. Guido van Rossum <guido@python.org> parents: diff changeset	75 exit(0);
a9dd2e1ea5c9 Split thread.c into a number of system-specific files. Guido van Rossum <guido@python.org> parents: diff changeset	76 cthread_exit(0);
a9dd2e1ea5c9 Split thread.c into a number of system-specific files. Guido van Rossum <guido@python.org> parents: diff changeset	77 }
a9dd2e1ea5c9 Split thread.c into a number of system-specific files. Guido van Rossum <guido@python.org> parents: diff changeset	78
a9dd2e1ea5c9 Split thread.c into a number of system-specific files. Guido van Rossum <guido@python.org> parents: diff changeset	79 void exit_thread _P0()
a9dd2e1ea5c9 Split thread.c into a number of system-specific files. Guido van Rossum <guido@python.org> parents: diff changeset	80 {
a9dd2e1ea5c9 Split thread.c into a number of system-specific files. Guido van Rossum <guido@python.org> parents: diff changeset	81 do_exit_thread(0);
a9dd2e1ea5c9 Split thread.c into a number of system-specific files. Guido van Rossum <guido@python.org> parents: diff changeset	82 }
a9dd2e1ea5c9 Split thread.c into a number of system-specific files. Guido van Rossum <guido@python.org> parents: diff changeset	83
a9dd2e1ea5c9 Split thread.c into a number of system-specific files. Guido van Rossum <guido@python.org> parents: diff changeset	84 void _exit_thread _P0()
a9dd2e1ea5c9 Split thread.c into a number of system-specific files. Guido van Rossum <guido@python.org> parents: diff changeset	85 {
a9dd2e1ea5c9 Split thread.c into a number of system-specific files. Guido van Rossum <guido@python.org> parents: diff changeset	86 do_exit_thread(1);
a9dd2e1ea5c9 Split thread.c into a number of system-specific files. Guido van Rossum <guido@python.org> parents: diff changeset	87 }
a9dd2e1ea5c9 Split thread.c into a number of system-specific files. Guido van Rossum <guido@python.org> parents: diff changeset	88
a9dd2e1ea5c9 Split thread.c into a number of system-specific files. Guido van Rossum <guido@python.org> parents: diff changeset	89 #ifndef NO_EXIT_PROG
a9dd2e1ea5c9 Split thread.c into a number of system-specific files. Guido van Rossum <guido@python.org> parents: diff changeset	90 static void do_exit_prog _P2(status, int status, no_cleanup, int no_cleanup)
a9dd2e1ea5c9 Split thread.c into a number of system-specific files. Guido van Rossum <guido@python.org> parents: diff changeset	91 {
a9dd2e1ea5c9 Split thread.c into a number of system-specific files. Guido van Rossum <guido@python.org> parents: diff changeset	92 dprintf(("exit_prog(%d) called\n", status));
a9dd2e1ea5c9 Split thread.c into a number of system-specific files. Guido van Rossum <guido@python.org> parents: diff changeset	93 if (!initialized)
a9dd2e1ea5c9 Split thread.c into a number of system-specific files. Guido van Rossum <guido@python.org> parents: diff changeset	94 if (no_cleanup)
a9dd2e1ea5c9 Split thread.c into a number of system-specific files. Guido van Rossum <guido@python.org> parents: diff changeset	95 _exit(status);
a9dd2e1ea5c9 Split thread.c into a number of system-specific files. Guido van Rossum <guido@python.org> parents: diff changeset	96 else
a9dd2e1ea5c9 Split thread.c into a number of system-specific files. Guido van Rossum <guido@python.org> parents: diff changeset	97 exit(status);
3838 5aab3f668e84 Changes needed by NeXT (the only platform that seems to use this). Guido van Rossum <guido@python.org> parents: 2062 diff changeset	98 if (no_cleanup)
5aab3f668e84 Changes needed by NeXT (the only platform that seems to use this). Guido van Rossum <guido@python.org> parents: 2062 diff changeset	99 _exit(status);
5aab3f668e84 Changes needed by NeXT (the only platform that seems to use this). Guido van Rossum <guido@python.org> parents: 2062 diff changeset	100 else
5aab3f668e84 Changes needed by NeXT (the only platform that seems to use this). Guido van Rossum <guido@python.org> parents: 2062 diff changeset	101 exit(status);
1628 a9dd2e1ea5c9 Split thread.c into a number of system-specific files. Guido van Rossum <guido@python.org> parents: diff changeset	102 }
a9dd2e1ea5c9 Split thread.c into a number of system-specific files. Guido van Rossum <guido@python.org> parents: diff changeset	103
a9dd2e1ea5c9 Split thread.c into a number of system-specific files. Guido van Rossum <guido@python.org> parents: diff changeset	104 void exit_prog _P1(status, int status)
a9dd2e1ea5c9 Split thread.c into a number of system-specific files. Guido van Rossum <guido@python.org> parents: diff changeset	105 {
a9dd2e1ea5c9 Split thread.c into a number of system-specific files. Guido van Rossum <guido@python.org> parents: diff changeset	106 do_exit_prog(status, 0);
a9dd2e1ea5c9 Split thread.c into a number of system-specific files. Guido van Rossum <guido@python.org> parents: diff changeset	107 }
a9dd2e1ea5c9 Split thread.c into a number of system-specific files. Guido van Rossum <guido@python.org> parents: diff changeset	108
a9dd2e1ea5c9 Split thread.c into a number of system-specific files. Guido van Rossum <guido@python.org> parents: diff changeset	109 void _exit_prog _P1(status, int status)
a9dd2e1ea5c9 Split thread.c into a number of system-specific files. Guido van Rossum <guido@python.org> parents: diff changeset	110 {
a9dd2e1ea5c9 Split thread.c into a number of system-specific files. Guido van Rossum <guido@python.org> parents: diff changeset	111 do_exit_prog(status, 1);
a9dd2e1ea5c9 Split thread.c into a number of system-specific files. Guido van Rossum <guido@python.org> parents: diff changeset	112 }
a9dd2e1ea5c9 Split thread.c into a number of system-specific files. Guido van Rossum <guido@python.org> parents: diff changeset	113 #endif /* NO_EXIT_PROG */
a9dd2e1ea5c9 Split thread.c into a number of system-specific files. Guido van Rossum <guido@python.org> parents: diff changeset	114
a9dd2e1ea5c9 Split thread.c into a number of system-specific files. Guido van Rossum <guido@python.org> parents: diff changeset	115 /*
a9dd2e1ea5c9 Split thread.c into a number of system-specific files. Guido van Rossum <guido@python.org> parents: diff changeset	116 * Lock support.
a9dd2e1ea5c9 Split thread.c into a number of system-specific files. Guido van Rossum <guido@python.org> parents: diff changeset	117 */
a9dd2e1ea5c9 Split thread.c into a number of system-specific files. Guido van Rossum <guido@python.org> parents: diff changeset	118 type_lock allocate_lock _P0()
a9dd2e1ea5c9 Split thread.c into a number of system-specific files. Guido van Rossum <guido@python.org> parents: diff changeset	119 {
3838 5aab3f668e84 Changes needed by NeXT (the only platform that seems to use this). Guido van Rossum <guido@python.org> parents: 2062 diff changeset	120 mutex_t lock;
1628 a9dd2e1ea5c9 Split thread.c into a number of system-specific files. Guido van Rossum <guido@python.org> parents: diff changeset	121
a9dd2e1ea5c9 Split thread.c into a number of system-specific files. Guido van Rossum <guido@python.org> parents: diff changeset	122 dprintf(("allocate_lock called\n"));
a9dd2e1ea5c9 Split thread.c into a number of system-specific files. Guido van Rossum <guido@python.org> parents: diff changeset	123 if (!initialized)
a9dd2e1ea5c9 Split thread.c into a number of system-specific files. Guido van Rossum <guido@python.org> parents: diff changeset	124 init_thread();
a9dd2e1ea5c9 Split thread.c into a number of system-specific files. Guido van Rossum <guido@python.org> parents: diff changeset	125
3838 5aab3f668e84 Changes needed by NeXT (the only platform that seems to use this). Guido van Rossum <guido@python.org> parents: 2062 diff changeset	126 lock = mutex_alloc();
5aab3f668e84 Changes needed by NeXT (the only platform that seems to use this). Guido van Rossum <guido@python.org> parents: 2062 diff changeset	127 if (mutex_init(lock)) {
5aab3f668e84 Changes needed by NeXT (the only platform that seems to use this). Guido van Rossum <guido@python.org> parents: 2062 diff changeset	128 perror("mutex_init");
5aab3f668e84 Changes needed by NeXT (the only platform that seems to use this). Guido van Rossum <guido@python.org> parents: 2062 diff changeset	129 free((void *) lock);
5aab3f668e84 Changes needed by NeXT (the only platform that seems to use this). Guido van Rossum <guido@python.org> parents: 2062 diff changeset	130 lock = 0;
5aab3f668e84 Changes needed by NeXT (the only platform that seems to use this). Guido van Rossum <guido@python.org> parents: 2062 diff changeset	131 }
1628 a9dd2e1ea5c9 Split thread.c into a number of system-specific files. Guido van Rossum <guido@python.org> parents: diff changeset	132 dprintf(("allocate_lock() -> %lx\n", (long)lock));
a9dd2e1ea5c9 Split thread.c into a number of system-specific files. Guido van Rossum <guido@python.org> parents: diff changeset	133 return (type_lock) lock;
a9dd2e1ea5c9 Split thread.c into a number of system-specific files. Guido van Rossum <guido@python.org> parents: diff changeset	134 }
a9dd2e1ea5c9 Split thread.c into a number of system-specific files. Guido van Rossum <guido@python.org> parents: diff changeset	135
a9dd2e1ea5c9 Split thread.c into a number of system-specific files. Guido van Rossum <guido@python.org> parents: diff changeset	136 void free_lock _P1(lock, type_lock lock)
a9dd2e1ea5c9 Split thread.c into a number of system-specific files. Guido van Rossum <guido@python.org> parents: diff changeset	137 {
a9dd2e1ea5c9 Split thread.c into a number of system-specific files. Guido van Rossum <guido@python.org> parents: diff changeset	138 dprintf(("free_lock(%lx) called\n", (long)lock));
3838 5aab3f668e84 Changes needed by NeXT (the only platform that seems to use this). Guido van Rossum <guido@python.org> parents: 2062 diff changeset	139 mutex_free(lock);
1628 a9dd2e1ea5c9 Split thread.c into a number of system-specific files. Guido van Rossum <guido@python.org> parents: diff changeset	140 }
a9dd2e1ea5c9 Split thread.c into a number of system-specific files. Guido van Rossum <guido@python.org> parents: diff changeset	141
a9dd2e1ea5c9 Split thread.c into a number of system-specific files. Guido van Rossum <guido@python.org> parents: diff changeset	142 int acquire_lock _P2(lock, type_lock lock, waitflag, int waitflag)
a9dd2e1ea5c9 Split thread.c into a number of system-specific files. Guido van Rossum <guido@python.org> parents: diff changeset	143 {
3838 5aab3f668e84 Changes needed by NeXT (the only platform that seems to use this). Guido van Rossum <guido@python.org> parents: 2062 diff changeset	144 int success = FALSE;
1628 a9dd2e1ea5c9 Split thread.c into a number of system-specific files. Guido van Rossum <guido@python.org> parents: diff changeset	145
a9dd2e1ea5c9 Split thread.c into a number of system-specific files. Guido van Rossum <guido@python.org> parents: diff changeset	146 dprintf(("acquire_lock(%lx, %d) called\n", (long)lock, waitflag));
3838 5aab3f668e84 Changes needed by NeXT (the only platform that seems to use this). Guido van Rossum <guido@python.org> parents: 2062 diff changeset	147 if (waitflag) { /* blocking */
5aab3f668e84 Changes needed by NeXT (the only platform that seems to use this). Guido van Rossum <guido@python.org> parents: 2062 diff changeset	148 mutex_lock(lock);
5aab3f668e84 Changes needed by NeXT (the only platform that seems to use this). Guido van Rossum <guido@python.org> parents: 2062 diff changeset	149 success = TRUE;
5aab3f668e84 Changes needed by NeXT (the only platform that seems to use this). Guido van Rossum <guido@python.org> parents: 2062 diff changeset	150 } else { /* non blocking */
5aab3f668e84 Changes needed by NeXT (the only platform that seems to use this). Guido van Rossum <guido@python.org> parents: 2062 diff changeset	151 success = mutex_try_lock(lock);
5aab3f668e84 Changes needed by NeXT (the only platform that seems to use this). Guido van Rossum <guido@python.org> parents: 2062 diff changeset	152 }
1628 a9dd2e1ea5c9 Split thread.c into a number of system-specific files. Guido van Rossum <guido@python.org> parents: diff changeset	153 dprintf(("acquire_lock(%lx, %d) -> %d\n", (long)lock, waitflag, success));
a9dd2e1ea5c9 Split thread.c into a number of system-specific files. Guido van Rossum <guido@python.org> parents: diff changeset	154 return success;
a9dd2e1ea5c9 Split thread.c into a number of system-specific files. Guido van Rossum <guido@python.org> parents: diff changeset	155 }
a9dd2e1ea5c9 Split thread.c into a number of system-specific files. Guido van Rossum <guido@python.org> parents: diff changeset	156
a9dd2e1ea5c9 Split thread.c into a number of system-specific files. Guido van Rossum <guido@python.org> parents: diff changeset	157 void release_lock _P1(lock, type_lock lock)
a9dd2e1ea5c9 Split thread.c into a number of system-specific files. Guido van Rossum <guido@python.org> parents: diff changeset	158 {
a9dd2e1ea5c9 Split thread.c into a number of system-specific files. Guido van Rossum <guido@python.org> parents: diff changeset	159 dprintf(("release_lock(%lx) called\n", (long)lock));
3838 5aab3f668e84 Changes needed by NeXT (the only platform that seems to use this). Guido van Rossum <guido@python.org> parents: 2062 diff changeset	160 mutex_unlock((mutex_t )lock);
1628 a9dd2e1ea5c9 Split thread.c into a number of system-specific files. Guido van Rossum <guido@python.org> parents: diff changeset	161 }
a9dd2e1ea5c9 Split thread.c into a number of system-specific files. Guido van Rossum <guido@python.org> parents: diff changeset	162
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 * Semaphore support.
3838 5aab3f668e84 Changes needed by NeXT (the only platform that seems to use this). Guido van Rossum <guido@python.org> parents: 2062 diff changeset	165 *
5aab3f668e84 Changes needed by NeXT (the only platform that seems to use this). Guido van Rossum <guido@python.org> parents: 2062 diff changeset	166 * This implementation is ripped directly from the pthreads implementation.
5aab3f668e84 Changes needed by NeXT (the only platform that seems to use this). Guido van Rossum <guido@python.org> parents: 2062 diff changeset	167 * Which is to say that it is 100% non-functional at this time.
5aab3f668e84 Changes needed by NeXT (the only platform that seems to use this). Guido van Rossum <guido@python.org> parents: 2062 diff changeset	168 *
5aab3f668e84 Changes needed by NeXT (the only platform that seems to use this). Guido van Rossum <guido@python.org> parents: 2062 diff changeset	169 * Assuming the page is still up, documentation can be found at:
5aab3f668e84 Changes needed by NeXT (the only platform that seems to use this). Guido van Rossum <guido@python.org> parents: 2062 diff changeset	170 *
5aab3f668e84 Changes needed by NeXT (the only platform that seems to use this). Guido van Rossum <guido@python.org> parents: 2062 diff changeset	171 * http://www.doc.ic.ac.uk/~mac/manuals/solaris-manual-pages/solaris/usr/man/man2/_lwp_sema_wait.2.html
5aab3f668e84 Changes needed by NeXT (the only platform that seems to use this). Guido van Rossum <guido@python.org> parents: 2062 diff changeset	172 *
5aab3f668e84 Changes needed by NeXT (the only platform that seems to use this). Guido van Rossum <guido@python.org> parents: 2062 diff changeset	173 * Looking at the man page, it seems that one could easily implement a
5aab3f668e84 Changes needed by NeXT (the only platform that seems to use this). Guido van Rossum <guido@python.org> parents: 2062 diff changeset	174 * semaphore using a condition.
5aab3f668e84 Changes needed by NeXT (the only platform that seems to use this). Guido van Rossum <guido@python.org> parents: 2062 diff changeset	175 *
1628 a9dd2e1ea5c9 Split thread.c into a number of system-specific files. Guido van Rossum <guido@python.org> parents: diff changeset	176 */
a9dd2e1ea5c9 Split thread.c into a number of system-specific files. Guido van Rossum <guido@python.org> parents: diff changeset	177 type_sema allocate_sema _P1(value, int value)
a9dd2e1ea5c9 Split thread.c into a number of system-specific files. Guido van Rossum <guido@python.org> parents: diff changeset	178 {
3838 5aab3f668e84 Changes needed by NeXT (the only platform that seems to use this). Guido van Rossum <guido@python.org> parents: 2062 diff changeset	179 char *sema = 0;
1628 a9dd2e1ea5c9 Split thread.c into a number of system-specific files. Guido van Rossum <guido@python.org> parents: diff changeset	180 dprintf(("allocate_sema called\n"));
a9dd2e1ea5c9 Split thread.c into a number of system-specific files. Guido van Rossum <guido@python.org> parents: diff changeset	181 if (!initialized)
a9dd2e1ea5c9 Split thread.c into a number of system-specific files. Guido van Rossum <guido@python.org> parents: diff changeset	182 init_thread();
a9dd2e1ea5c9 Split thread.c into a number of system-specific files. Guido van Rossum <guido@python.org> parents: diff changeset	183
a9dd2e1ea5c9 Split thread.c into a number of system-specific files. Guido van Rossum <guido@python.org> parents: diff changeset	184 dprintf(("allocate_sema() -> %lx\n", (long) sema));
a9dd2e1ea5c9 Split thread.c into a number of system-specific files. Guido van Rossum <guido@python.org> parents: diff changeset	185 return (type_sema) sema;
a9dd2e1ea5c9 Split thread.c into a number of system-specific files. Guido van Rossum <guido@python.org> parents: diff changeset	186 }
a9dd2e1ea5c9 Split thread.c into a number of system-specific files. Guido van Rossum <guido@python.org> parents: diff changeset	187
a9dd2e1ea5c9 Split thread.c into a number of system-specific files. Guido van Rossum <guido@python.org> parents: diff changeset	188 void free_sema _P1(sema, type_sema sema)
a9dd2e1ea5c9 Split thread.c into a number of system-specific files. Guido van Rossum <guido@python.org> parents: diff changeset	189 {
a9dd2e1ea5c9 Split thread.c into a number of system-specific files. Guido van Rossum <guido@python.org> parents: diff changeset	190 dprintf(("free_sema(%lx) called\n", (long) sema));
a9dd2e1ea5c9 Split thread.c into a number of system-specific files. Guido van Rossum <guido@python.org> parents: diff changeset	191 }
a9dd2e1ea5c9 Split thread.c into a number of system-specific files. Guido van Rossum <guido@python.org> parents: diff changeset	192
4371 c277ee8c669c Sjoerd's thread changes (including down_sema typo fix). Guido van Rossum <guido@python.org> parents: 3838 diff changeset	193 int down_sema _P2(sema, type_sema sema, waitflag, int waitflag)
1628 a9dd2e1ea5c9 Split thread.c into a number of system-specific files. Guido van Rossum <guido@python.org> parents: diff changeset	194 {
4371 c277ee8c669c Sjoerd's thread changes (including down_sema typo fix). Guido van Rossum <guido@python.org> parents: 3838 diff changeset	195 dprintf(("down_sema(%lx, %d) called\n", (long) sema, waitflag));
1628 a9dd2e1ea5c9 Split thread.c into a number of system-specific files. Guido van Rossum <guido@python.org> parents: diff changeset	196 dprintf(("down_sema(%lx) return\n", (long) sema));
4371 c277ee8c669c Sjoerd's thread changes (including down_sema typo fix). Guido van Rossum <guido@python.org> parents: 3838 diff changeset	197 return -1;
1628 a9dd2e1ea5c9 Split thread.c into a number of system-specific files. Guido van Rossum <guido@python.org> parents: diff changeset	198 }
a9dd2e1ea5c9 Split thread.c into a number of system-specific files. Guido van Rossum <guido@python.org> parents: diff changeset	199
a9dd2e1ea5c9 Split thread.c into a number of system-specific files. Guido van Rossum <guido@python.org> parents: diff changeset	200 void up_sema _P1(sema, type_sema sema)
a9dd2e1ea5c9 Split thread.c into a number of system-specific files. Guido van Rossum <guido@python.org> parents: diff changeset	201 {
a9dd2e1ea5c9 Split thread.c into a number of system-specific files. Guido van Rossum <guido@python.org> parents: diff changeset	202 dprintf(("up_sema(%lx)\n", (long) sema));
a9dd2e1ea5c9 Split thread.c into a number of system-specific files. Guido van Rossum <guido@python.org> parents: diff changeset	203 }

Mercurial > cpython-lru_cache-weakref

annotate Python/thread_cthread.h @ 5758:bfe9ba74c19e legacy-trunk