cpython-lru_cache-weakref: Python/thread

annotate Python/thread_atheos.h @ 80661:94de77bd0b4b 2.7

Issue #16194: document imp.load_dynamic problems when read several extension modules from the same binary object file.

author	Andrew Svetlov <andrew.svetlov@gmail.com>
date	Thu, 29 Nov 2012 19:51:28 +0200
parents	b36cb4602e21
children

rev	line source
23777 bec1b942e0bc Patch #488073: AtheOS port. Martin v. Löwis <martin@v.loewis.de> parents: diff changeset	1 /* Threading for AtheOS.
bec1b942e0bc Patch #488073: AtheOS port. Martin v. Löwis <martin@v.loewis.de> parents: diff changeset	2 Based on thread_beos.h. */
bec1b942e0bc Patch #488073: AtheOS port. Martin v. Löwis <martin@v.loewis.de> parents: diff changeset	3
bec1b942e0bc Patch #488073: AtheOS port. Martin v. Löwis <martin@v.loewis.de> parents: diff changeset	4 #include <atheos/threads.h>
bec1b942e0bc Patch #488073: AtheOS port. Martin v. Löwis <martin@v.loewis.de> parents: diff changeset	5 #include <atheos/semaphore.h>
bec1b942e0bc Patch #488073: AtheOS port. Martin v. Löwis <martin@v.loewis.de> parents: diff changeset	6 #include <atheos/atomic.h>
bec1b942e0bc Patch #488073: AtheOS port. Martin v. Löwis <martin@v.loewis.de> parents: diff changeset	7 #include <errno.h>
bec1b942e0bc Patch #488073: AtheOS port. Martin v. Löwis <martin@v.loewis.de> parents: diff changeset	8 #include <string.h>
bec1b942e0bc Patch #488073: AtheOS port. Martin v. Löwis <martin@v.loewis.de> parents: diff changeset	9
bec1b942e0bc Patch #488073: AtheOS port. Martin v. Löwis <martin@v.loewis.de> parents: diff changeset	10 /* Missing decl from threads.h */
bec1b942e0bc Patch #488073: AtheOS port. Martin v. Löwis <martin@v.loewis.de> parents: diff changeset	11 extern int exit_thread(int);
bec1b942e0bc Patch #488073: AtheOS port. Martin v. Löwis <martin@v.loewis.de> parents: diff changeset	12
bec1b942e0bc Patch #488073: AtheOS port. Martin v. Löwis <martin@v.loewis.de> parents: diff changeset	13
bec1b942e0bc Patch #488073: AtheOS port. Martin v. Löwis <martin@v.loewis.de> parents: diff changeset	14 /* Undefine FASTLOCK to play with simple semaphores. */
bec1b942e0bc Patch #488073: AtheOS port. Martin v. Löwis <martin@v.loewis.de> parents: diff changeset	15 #define FASTLOCK
bec1b942e0bc Patch #488073: AtheOS port. Martin v. Löwis <martin@v.loewis.de> parents: diff changeset	16
bec1b942e0bc Patch #488073: AtheOS port. Martin v. Löwis <martin@v.loewis.de> parents: diff changeset	17
bec1b942e0bc Patch #488073: AtheOS port. Martin v. Löwis <martin@v.loewis.de> parents: diff changeset	18 #ifdef FASTLOCK
bec1b942e0bc Patch #488073: AtheOS port. Martin v. Löwis <martin@v.loewis.de> parents: diff changeset	19
bec1b942e0bc Patch #488073: AtheOS port. Martin v. Löwis <martin@v.loewis.de> parents: diff changeset	20 /* Use an atomic counter and a semaphore for maximum speed. */
bec1b942e0bc Patch #488073: AtheOS port. Martin v. Löwis <martin@v.loewis.de> parents: diff changeset	21 typedef struct fastmutex {
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 23777 diff changeset	22 sem_id sem;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 23777 diff changeset	23 atomic_t count;
23777 bec1b942e0bc Patch #488073: AtheOS port. Martin v. Löwis <martin@v.loewis.de> parents: diff changeset	24 } fastmutex_t;
bec1b942e0bc Patch #488073: AtheOS port. Martin v. Löwis <martin@v.loewis.de> parents: diff changeset	25
bec1b942e0bc Patch #488073: AtheOS port. Martin v. Löwis <martin@v.loewis.de> parents: diff changeset	26
bec1b942e0bc Patch #488073: AtheOS port. Martin v. Löwis <martin@v.loewis.de> parents: diff changeset	27 static int fastmutex_create(const char name, fastmutex_t mutex);
bec1b942e0bc Patch #488073: AtheOS port. Martin v. Löwis <martin@v.loewis.de> parents: diff changeset	28 static int fastmutex_destroy(fastmutex_t * mutex);
bec1b942e0bc Patch #488073: AtheOS port. Martin v. Löwis <martin@v.loewis.de> parents: diff changeset	29 static int fastmutex_lock(fastmutex_t * mutex);
bec1b942e0bc Patch #488073: AtheOS port. Martin v. Löwis <martin@v.loewis.de> parents: diff changeset	30 static int fastmutex_timedlock(fastmutex_t * mutex, bigtime_t timeout);
bec1b942e0bc Patch #488073: AtheOS port. Martin v. Löwis <martin@v.loewis.de> parents: diff changeset	31 static int fastmutex_unlock(fastmutex_t * mutex);
bec1b942e0bc Patch #488073: AtheOS port. Martin v. Löwis <martin@v.loewis.de> parents: diff changeset	32
bec1b942e0bc Patch #488073: AtheOS port. Martin v. Löwis <martin@v.loewis.de> parents: diff changeset	33
bec1b942e0bc Patch #488073: AtheOS port. Martin v. Löwis <martin@v.loewis.de> parents: diff changeset	34 static int fastmutex_create(const char name, fastmutex_t mutex)
bec1b942e0bc Patch #488073: AtheOS port. Martin v. Löwis <martin@v.loewis.de> parents: diff changeset	35 {
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 23777 diff changeset	36 mutex->count = 0;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 23777 diff changeset	37 mutex->sem = create_semaphore(name, 0, 0);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 23777 diff changeset	38 return (mutex->sem < 0) ? -1 : 0;
23777 bec1b942e0bc Patch #488073: AtheOS port. Martin v. Löwis <martin@v.loewis.de> parents: diff changeset	39 }
bec1b942e0bc Patch #488073: AtheOS port. Martin v. Löwis <martin@v.loewis.de> parents: diff changeset	40
bec1b942e0bc Patch #488073: AtheOS port. Martin v. Löwis <martin@v.loewis.de> parents: diff changeset	41
bec1b942e0bc Patch #488073: AtheOS port. Martin v. Löwis <martin@v.loewis.de> parents: diff changeset	42 static int fastmutex_destroy(fastmutex_t * mutex)
bec1b942e0bc Patch #488073: AtheOS port. Martin v. Löwis <martin@v.loewis.de> parents: diff changeset	43 {
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 23777 diff changeset	44 if (fastmutex_timedlock(mutex, 0) == 0 \|\| errno == EWOULDBLOCK) {
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 23777 diff changeset	45 return delete_semaphore(mutex->sem);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 23777 diff changeset	46 }
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 23777 diff changeset	47 return 0;
23777 bec1b942e0bc Patch #488073: AtheOS port. Martin v. Löwis <martin@v.loewis.de> parents: diff changeset	48 }
bec1b942e0bc Patch #488073: AtheOS port. Martin v. Löwis <martin@v.loewis.de> parents: diff changeset	49
bec1b942e0bc Patch #488073: AtheOS port. Martin v. Löwis <martin@v.loewis.de> parents: diff changeset	50
bec1b942e0bc Patch #488073: AtheOS port. Martin v. Löwis <martin@v.loewis.de> parents: diff changeset	51 static int fastmutex_lock(fastmutex_t * mutex)
bec1b942e0bc Patch #488073: AtheOS port. Martin v. Löwis <martin@v.loewis.de> parents: diff changeset	52 {
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 23777 diff changeset	53 atomic_t prev = atomic_add(&mutex->count, 1);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 23777 diff changeset	54 if (prev > 0)
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 23777 diff changeset	55 return lock_semaphore(mutex->sem);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 23777 diff changeset	56 return 0;
23777 bec1b942e0bc Patch #488073: AtheOS port. Martin v. Löwis <martin@v.loewis.de> parents: diff changeset	57 }
bec1b942e0bc Patch #488073: AtheOS port. Martin v. Löwis <martin@v.loewis.de> parents: diff changeset	58
bec1b942e0bc Patch #488073: AtheOS port. Martin v. Löwis <martin@v.loewis.de> parents: diff changeset	59
bec1b942e0bc Patch #488073: AtheOS port. Martin v. Löwis <martin@v.loewis.de> parents: diff changeset	60 static int fastmutex_timedlock(fastmutex_t * mutex, bigtime_t timeout)
bec1b942e0bc Patch #488073: AtheOS port. Martin v. Löwis <martin@v.loewis.de> parents: diff changeset	61 {
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 23777 diff changeset	62 atomic_t prev = atomic_add(&mutex->count, 1);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 23777 diff changeset	63 if (prev > 0)
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 23777 diff changeset	64 return lock_semaphore_x(mutex->sem, 1, 0, timeout);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 23777 diff changeset	65 return 0;
23777 bec1b942e0bc Patch #488073: AtheOS port. Martin v. Löwis <martin@v.loewis.de> parents: diff changeset	66 }
bec1b942e0bc Patch #488073: AtheOS port. Martin v. Löwis <martin@v.loewis.de> parents: diff changeset	67
bec1b942e0bc Patch #488073: AtheOS port. Martin v. Löwis <martin@v.loewis.de> parents: diff changeset	68
bec1b942e0bc Patch #488073: AtheOS port. Martin v. Löwis <martin@v.loewis.de> parents: diff changeset	69 static int fastmutex_unlock(fastmutex_t * mutex)
bec1b942e0bc Patch #488073: AtheOS port. Martin v. Löwis <martin@v.loewis.de> parents: diff changeset	70 {
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 23777 diff changeset	71 atomic_t prev = atomic_add(&mutex->count, -1);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 23777 diff changeset	72 if (prev > 1)
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 23777 diff changeset	73 return unlock_semaphore(mutex->sem);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 23777 diff changeset	74 return 0;
23777 bec1b942e0bc Patch #488073: AtheOS port. Martin v. Löwis <martin@v.loewis.de> parents: diff changeset	75 }
bec1b942e0bc Patch #488073: AtheOS port. Martin v. Löwis <martin@v.loewis.de> parents: diff changeset	76
bec1b942e0bc Patch #488073: AtheOS port. Martin v. Löwis <martin@v.loewis.de> parents: diff changeset	77
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 23777 diff changeset	78 #endif /* FASTLOCK */
23777 bec1b942e0bc Patch #488073: AtheOS port. Martin v. Löwis <martin@v.loewis.de> parents: diff changeset	79
bec1b942e0bc Patch #488073: AtheOS port. Martin v. Löwis <martin@v.loewis.de> parents: diff changeset	80
bec1b942e0bc Patch #488073: AtheOS port. Martin v. Löwis <martin@v.loewis.de> parents: diff changeset	81 /*
bec1b942e0bc Patch #488073: AtheOS port. Martin v. Löwis <martin@v.loewis.de> parents: diff changeset	82 * Initialization.
bec1b942e0bc Patch #488073: AtheOS port. Martin v. Löwis <martin@v.loewis.de> parents: diff changeset	83 *
bec1b942e0bc Patch #488073: AtheOS port. Martin v. Löwis <martin@v.loewis.de> parents: diff changeset	84 */
bec1b942e0bc Patch #488073: AtheOS port. Martin v. Löwis <martin@v.loewis.de> parents: diff changeset	85 static void PyThread__init_thread(void)
bec1b942e0bc Patch #488073: AtheOS port. Martin v. Löwis <martin@v.loewis.de> parents: diff changeset	86 {
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 23777 diff changeset	87 /* Do nothing. */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 23777 diff changeset	88 return;
23777 bec1b942e0bc Patch #488073: AtheOS port. Martin v. Löwis <martin@v.loewis.de> parents: diff changeset	89 }
bec1b942e0bc Patch #488073: AtheOS port. Martin v. Löwis <martin@v.loewis.de> parents: diff changeset	90
bec1b942e0bc Patch #488073: AtheOS port. Martin v. Löwis <martin@v.loewis.de> parents: diff changeset	91
bec1b942e0bc Patch #488073: AtheOS port. Martin v. Löwis <martin@v.loewis.de> parents: diff changeset	92 /*
bec1b942e0bc Patch #488073: AtheOS port. Martin v. Löwis <martin@v.loewis.de> parents: diff changeset	93 * Thread support.
bec1b942e0bc Patch #488073: AtheOS port. Martin v. Löwis <martin@v.loewis.de> parents: diff changeset	94 *
bec1b942e0bc Patch #488073: AtheOS port. Martin v. Löwis <martin@v.loewis.de> parents: diff changeset	95 */
bec1b942e0bc Patch #488073: AtheOS port. Martin v. Löwis <martin@v.loewis.de> parents: diff changeset	96
bec1b942e0bc Patch #488073: AtheOS port. Martin v. Löwis <martin@v.loewis.de> parents: diff changeset	97 static atomic_t thread_count = 0;
bec1b942e0bc Patch #488073: AtheOS port. Martin v. Löwis <martin@v.loewis.de> parents: diff changeset	98
bec1b942e0bc Patch #488073: AtheOS port. Martin v. Löwis <martin@v.loewis.de> parents: diff changeset	99 long PyThread_start_new_thread(void (func) (void ), void *arg)
bec1b942e0bc Patch #488073: AtheOS port. Martin v. Löwis <martin@v.loewis.de> parents: diff changeset	100 {
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 23777 diff changeset	101 status_t success = -1;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 23777 diff changeset	102 thread_id tid;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 23777 diff changeset	103 char name[OS_NAME_LENGTH];
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 23777 diff changeset	104 atomic_t this_thread;
23777 bec1b942e0bc Patch #488073: AtheOS port. Martin v. Löwis <martin@v.loewis.de> parents: diff changeset	105
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 23777 diff changeset	106 dprintf(("PyThread_start_new_thread called\n"));
23777 bec1b942e0bc Patch #488073: AtheOS port. Martin v. Löwis <martin@v.loewis.de> parents: diff changeset	107
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 23777 diff changeset	108 this_thread = atomic_add(&thread_count, 1);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 23777 diff changeset	109 PyOS_snprintf(name, sizeof(name), "python thread (%d)", this_thread);
23777 bec1b942e0bc Patch #488073: AtheOS port. Martin v. Löwis <martin@v.loewis.de> parents: diff changeset	110
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 23777 diff changeset	111 tid = spawn_thread(name, func, NORMAL_PRIORITY, 0, arg);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 23777 diff changeset	112 if (tid < 0) {
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 23777 diff changeset	113 dprintf(("PyThread_start_new_thread spawn_thread failed: %s\n", strerror(errno)));
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 23777 diff changeset	114 } else {
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 23777 diff changeset	115 success = resume_thread(tid);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 23777 diff changeset	116 if (success < 0) {
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 23777 diff changeset	117 dprintf(("PyThread_start_new_thread resume_thread failed: %s\n", strerror(errno)));
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 23777 diff changeset	118 }
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 23777 diff changeset	119 }
23777 bec1b942e0bc Patch #488073: AtheOS port. Martin v. Löwis <martin@v.loewis.de> parents: diff changeset	120
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 23777 diff changeset	121 return (success < 0 ? -1 : tid);
23777 bec1b942e0bc Patch #488073: AtheOS port. Martin v. Löwis <martin@v.loewis.de> parents: diff changeset	122 }
bec1b942e0bc Patch #488073: AtheOS port. Martin v. Löwis <martin@v.loewis.de> parents: diff changeset	123
bec1b942e0bc Patch #488073: AtheOS port. Martin v. Löwis <martin@v.loewis.de> parents: diff changeset	124
bec1b942e0bc Patch #488073: AtheOS port. Martin v. Löwis <martin@v.loewis.de> parents: diff changeset	125 long PyThread_get_thread_ident(void)
bec1b942e0bc Patch #488073: AtheOS port. Martin v. Löwis <martin@v.loewis.de> parents: diff changeset	126 {
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 23777 diff changeset	127 return get_thread_id(NULL);
23777 bec1b942e0bc Patch #488073: AtheOS port. Martin v. Löwis <martin@v.loewis.de> parents: diff changeset	128 }
bec1b942e0bc Patch #488073: AtheOS port. Martin v. Löwis <martin@v.loewis.de> parents: diff changeset	129
bec1b942e0bc Patch #488073: AtheOS port. Martin v. Löwis <martin@v.loewis.de> parents: diff changeset	130
59086 df5719c298db #4852: Remove dead code in every thread implementation, unused for many years. Amaury Forgeot d'Arc <amauryfa@gmail.com> parents: 23777 diff changeset	131 void PyThread_exit_thread(void)
23777 bec1b942e0bc Patch #488073: AtheOS port. Martin v. Löwis <martin@v.loewis.de> parents: diff changeset	132 {
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 23777 diff changeset	133 dprintf(("PyThread_exit_thread called\n"));
23777 bec1b942e0bc Patch #488073: AtheOS port. Martin v. Löwis <martin@v.loewis.de> parents: diff changeset	134
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 23777 diff changeset	135 /* Thread-safe way to read a variable without a mutex: */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 23777 diff changeset	136 if (atomic_add(&thread_count, 0) == 0) {
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 23777 diff changeset	137 /* No threads around, so exit main(). */
61463 fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 59086 diff changeset	138 exit(0);
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 23777 diff changeset	139 } else {
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 23777 diff changeset	140 /* We're a thread */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 23777 diff changeset	141 exit_thread(0);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 23777 diff changeset	142 }
23777 bec1b942e0bc Patch #488073: AtheOS port. Martin v. Löwis <martin@v.loewis.de> parents: diff changeset	143 }
bec1b942e0bc Patch #488073: AtheOS port. Martin v. Löwis <martin@v.loewis.de> parents: diff changeset	144
bec1b942e0bc Patch #488073: AtheOS port. Martin v. Löwis <martin@v.loewis.de> parents: diff changeset	145
bec1b942e0bc Patch #488073: AtheOS port. Martin v. Löwis <martin@v.loewis.de> parents: diff changeset	146 /*
bec1b942e0bc Patch #488073: AtheOS port. Martin v. Löwis <martin@v.loewis.de> parents: diff changeset	147 * Lock support.
bec1b942e0bc Patch #488073: AtheOS port. Martin v. Löwis <martin@v.loewis.de> parents: diff changeset	148 *
bec1b942e0bc Patch #488073: AtheOS port. Martin v. Löwis <martin@v.loewis.de> parents: diff changeset	149 */
bec1b942e0bc Patch #488073: AtheOS port. Martin v. Löwis <martin@v.loewis.de> parents: diff changeset	150
bec1b942e0bc Patch #488073: AtheOS port. Martin v. Löwis <martin@v.loewis.de> parents: diff changeset	151 static atomic_t lock_count = 0;
bec1b942e0bc Patch #488073: AtheOS port. Martin v. Löwis <martin@v.loewis.de> parents: diff changeset	152
bec1b942e0bc Patch #488073: AtheOS port. Martin v. Löwis <martin@v.loewis.de> parents: diff changeset	153 PyThread_type_lock PyThread_allocate_lock(void)
bec1b942e0bc Patch #488073: AtheOS port. Martin v. Löwis <martin@v.loewis.de> parents: diff changeset	154 {
bec1b942e0bc Patch #488073: AtheOS port. Martin v. Löwis <martin@v.loewis.de> parents: diff changeset	155 #ifdef FASTLOCK
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 23777 diff changeset	156 fastmutex_t *lock;
23777 bec1b942e0bc Patch #488073: AtheOS port. Martin v. Löwis <martin@v.loewis.de> parents: diff changeset	157 #else
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 23777 diff changeset	158 sem_id sema;
23777 bec1b942e0bc Patch #488073: AtheOS port. Martin v. Löwis <martin@v.loewis.de> parents: diff changeset	159 #endif
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 23777 diff changeset	160 char name[OS_NAME_LENGTH];
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 23777 diff changeset	161 atomic_t this_lock;
23777 bec1b942e0bc Patch #488073: AtheOS port. Martin v. Löwis <martin@v.loewis.de> parents: diff changeset	162
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 23777 diff changeset	163 dprintf(("PyThread_allocate_lock called\n"));
23777 bec1b942e0bc Patch #488073: AtheOS port. Martin v. Löwis <martin@v.loewis.de> parents: diff changeset	164
bec1b942e0bc Patch #488073: AtheOS port. Martin v. Löwis <martin@v.loewis.de> parents: diff changeset	165 #ifdef FASTLOCK
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 23777 diff changeset	166 lock = (fastmutex_t *) malloc(sizeof(fastmutex_t));
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 23777 diff changeset	167 if (lock == NULL) {
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 23777 diff changeset	168 dprintf(("PyThread_allocate_lock failed: out of memory\n"));
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 23777 diff changeset	169 return (PyThread_type_lock) NULL;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 23777 diff changeset	170 }
23777 bec1b942e0bc Patch #488073: AtheOS port. Martin v. Löwis <martin@v.loewis.de> parents: diff changeset	171 #endif
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 23777 diff changeset	172 this_lock = atomic_add(&lock_count, 1);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 23777 diff changeset	173 PyOS_snprintf(name, sizeof(name), "python lock (%d)", this_lock);
23777 bec1b942e0bc Patch #488073: AtheOS port. Martin v. Löwis <martin@v.loewis.de> parents: diff changeset	174
bec1b942e0bc Patch #488073: AtheOS port. Martin v. Löwis <martin@v.loewis.de> parents: diff changeset	175 #ifdef FASTLOCK
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 23777 diff changeset	176 if (fastmutex_create(name, lock) < 0) {
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 23777 diff changeset	177 dprintf(("PyThread_allocate_lock failed: %s\n",
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 23777 diff changeset	178 strerror(errno)));
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 23777 diff changeset	179 free(lock);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 23777 diff changeset	180 lock = NULL;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 23777 diff changeset	181 }
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 23777 diff changeset	182 dprintf(("PyThread_allocate_lock()-> %p\n", lock));
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 23777 diff changeset	183 return (PyThread_type_lock) lock;
23777 bec1b942e0bc Patch #488073: AtheOS port. Martin v. Löwis <martin@v.loewis.de> parents: diff changeset	184 #else
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 23777 diff changeset	185 sema = create_semaphore(name, 1, 0);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 23777 diff changeset	186 if (sema < 0) {
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 23777 diff changeset	187 dprintf(("PyThread_allocate_lock failed: %s\n",
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 23777 diff changeset	188 strerror(errno)));
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 23777 diff changeset	189 sema = 0;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 23777 diff changeset	190 }
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 23777 diff changeset	191 dprintf(("PyThread_allocate_lock()-> %p\n", sema));
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 23777 diff changeset	192 return (PyThread_type_lock) sema;
23777 bec1b942e0bc Patch #488073: AtheOS port. Martin v. Löwis <martin@v.loewis.de> parents: diff changeset	193 #endif
bec1b942e0bc Patch #488073: AtheOS port. Martin v. Löwis <martin@v.loewis.de> parents: diff changeset	194 }
bec1b942e0bc Patch #488073: AtheOS port. Martin v. Löwis <martin@v.loewis.de> parents: diff changeset	195
bec1b942e0bc Patch #488073: AtheOS port. Martin v. Löwis <martin@v.loewis.de> parents: diff changeset	196
bec1b942e0bc Patch #488073: AtheOS port. Martin v. Löwis <martin@v.loewis.de> parents: diff changeset	197 void PyThread_free_lock(PyThread_type_lock lock)
bec1b942e0bc Patch #488073: AtheOS port. Martin v. Löwis <martin@v.loewis.de> parents: diff changeset	198 {
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 23777 diff changeset	199 dprintf(("PyThread_free_lock(%p) called\n", lock));
23777 bec1b942e0bc Patch #488073: AtheOS port. Martin v. Löwis <martin@v.loewis.de> parents: diff changeset	200
bec1b942e0bc Patch #488073: AtheOS port. Martin v. Löwis <martin@v.loewis.de> parents: diff changeset	201 #ifdef FASTLOCK
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 23777 diff changeset	202 if (fastmutex_destroy((fastmutex_t *) lock) < 0) {
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 23777 diff changeset	203 dprintf(("PyThread_free_lock(%p) failed: %s\n", lock,
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 23777 diff changeset	204 strerror(errno)));
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 23777 diff changeset	205 }
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 23777 diff changeset	206 free(lock);
23777 bec1b942e0bc Patch #488073: AtheOS port. Martin v. Löwis <martin@v.loewis.de> parents: diff changeset	207 #else
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 23777 diff changeset	208 if (delete_semaphore((sem_id) lock) < 0) {
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 23777 diff changeset	209 dprintf(("PyThread_free_lock(%p) failed: %s\n", lock,
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 23777 diff changeset	210 strerror(errno)));
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 23777 diff changeset	211 }
23777 bec1b942e0bc Patch #488073: AtheOS port. Martin v. Löwis <martin@v.loewis.de> parents: diff changeset	212 #endif
bec1b942e0bc Patch #488073: AtheOS port. Martin v. Löwis <martin@v.loewis.de> parents: diff changeset	213 }
bec1b942e0bc Patch #488073: AtheOS port. Martin v. Löwis <martin@v.loewis.de> parents: diff changeset	214
bec1b942e0bc Patch #488073: AtheOS port. Martin v. Löwis <martin@v.loewis.de> parents: diff changeset	215
bec1b942e0bc Patch #488073: AtheOS port. Martin v. Löwis <martin@v.loewis.de> parents: diff changeset	216 int PyThread_acquire_lock(PyThread_type_lock lock, int waitflag)
bec1b942e0bc Patch #488073: AtheOS port. Martin v. Löwis <martin@v.loewis.de> parents: diff changeset	217 {
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 23777 diff changeset	218 int retval;
23777 bec1b942e0bc Patch #488073: AtheOS port. Martin v. Löwis <martin@v.loewis.de> parents: diff changeset	219
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 23777 diff changeset	220 dprintf(("PyThread_acquire_lock(%p, %d) called\n", lock,
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 23777 diff changeset	221 waitflag));
23777 bec1b942e0bc Patch #488073: AtheOS port. Martin v. Löwis <martin@v.loewis.de> parents: diff changeset	222
bec1b942e0bc Patch #488073: AtheOS port. Martin v. Löwis <martin@v.loewis.de> parents: diff changeset	223 #ifdef FASTLOCK
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 23777 diff changeset	224 if (waitflag)
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 23777 diff changeset	225 retval = fastmutex_lock((fastmutex_t *) lock);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 23777 diff changeset	226 else
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 23777 diff changeset	227 retval = fastmutex_timedlock((fastmutex_t *) lock, 0);
23777 bec1b942e0bc Patch #488073: AtheOS port. Martin v. Löwis <martin@v.loewis.de> parents: diff changeset	228 #else
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 23777 diff changeset	229 if (waitflag)
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 23777 diff changeset	230 retval = lock_semaphore((sem_id) lock);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 23777 diff changeset	231 else
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 23777 diff changeset	232 retval = lock_semaphore_x((sem_id) lock, 1, 0, 0);
23777 bec1b942e0bc Patch #488073: AtheOS port. Martin v. Löwis <martin@v.loewis.de> parents: diff changeset	233 #endif
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 23777 diff changeset	234 if (retval < 0) {
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 23777 diff changeset	235 dprintf(("PyThread_acquire_lock(%p, %d) failed: %s\n",
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 23777 diff changeset	236 lock, waitflag, strerror(errno)));
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 23777 diff changeset	237 }
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 23777 diff changeset	238 dprintf(("PyThread_acquire_lock(%p, %d)-> %d\n", lock, waitflag,
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 23777 diff changeset	239 retval));
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 23777 diff changeset	240 return retval < 0 ? 0 : 1;
23777 bec1b942e0bc Patch #488073: AtheOS port. Martin v. Löwis <martin@v.loewis.de> parents: diff changeset	241 }
bec1b942e0bc Patch #488073: AtheOS port. Martin v. Löwis <martin@v.loewis.de> parents: diff changeset	242
bec1b942e0bc Patch #488073: AtheOS port. Martin v. Löwis <martin@v.loewis.de> parents: diff changeset	243
bec1b942e0bc Patch #488073: AtheOS port. Martin v. Löwis <martin@v.loewis.de> parents: diff changeset	244 void PyThread_release_lock(PyThread_type_lock lock)
bec1b942e0bc Patch #488073: AtheOS port. Martin v. Löwis <martin@v.loewis.de> parents: diff changeset	245 {
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 23777 diff changeset	246 dprintf(("PyThread_release_lock(%p) called\n", lock));
23777 bec1b942e0bc Patch #488073: AtheOS port. Martin v. Löwis <martin@v.loewis.de> parents: diff changeset	247
bec1b942e0bc Patch #488073: AtheOS port. Martin v. Löwis <martin@v.loewis.de> parents: diff changeset	248 #ifdef FASTLOCK
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 23777 diff changeset	249 if (fastmutex_unlock((fastmutex_t *) lock) < 0) {
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 23777 diff changeset	250 dprintf(("PyThread_release_lock(%p) failed: %s\n", lock,
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 23777 diff changeset	251 strerror(errno)));
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 23777 diff changeset	252 }
23777 bec1b942e0bc Patch #488073: AtheOS port. Martin v. Löwis <martin@v.loewis.de> parents: diff changeset	253 #else
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 23777 diff changeset	254 if (unlock_semaphore((sem_id) lock) < 0) {
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 23777 diff changeset	255 dprintf(("PyThread_release_lock(%p) failed: %s\n", lock,
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 23777 diff changeset	256 strerror(errno)));
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 23777 diff changeset	257 }
23777 bec1b942e0bc Patch #488073: AtheOS port. Martin v. Löwis <martin@v.loewis.de> parents: diff changeset	258 #endif
bec1b942e0bc Patch #488073: AtheOS port. Martin v. Löwis <martin@v.loewis.de> parents: diff changeset	259 }

Mercurial > cpython-lru_cache-weakref

annotate Python/thread_atheos.h @ 80661:94de77bd0b4b 2.7