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comparison Python/thread_pthread.h @ 9290:2340f615da8f legacy-trunk

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BSDI specific patches, inspired by Nigel Head and otto@mail.olympus.net. Also (non-BSDI specific): - Change the CHECK_STATUS() macro so it tests for nonzero error codes instead of negative error codes only (this was needed for BSDI, but appears to be correct according to the PTHREADS spec). - use memset() to zero out the allocated lock structure. Again, this was needed for BSDI, but can't hurt elsewhere either.
author Guido van Rossum <guido@python.org>
date Wed, 07 Oct 1998 16:39:47 +0000
parents 4d2cb212c8d1
children 877d23bd5bdc
comparison
equal deleted inserted replaced
9289:5d344710fcc3 9290:2340f615da8f
30 ******************************************************************/ 30 ******************************************************************/
31 31
32 /* Posix threads interface */ 32 /* Posix threads interface */
33 33
34 #include <stdlib.h> 34 #include <stdlib.h>
35 #include <string.h>
35 #include <pthread.h> 36 #include <pthread.h>
36 37
37 38
38 /* try to determine what version of the Pthread Standard is installed. 39 /* try to determine what version of the Pthread Standard is installed.
39 * this is important, since all sorts of parameter types changed from 40 * this is important, since all sorts of parameter types changed from
111 /* a <cond, mutex> pair to handle an acquire of a locked lock */ 112 /* a <cond, mutex> pair to handle an acquire of a locked lock */
112 pthread_cond_t lock_released; 113 pthread_cond_t lock_released;
113 pthread_mutex_t mut; 114 pthread_mutex_t mut;
114 } pthread_lock; 115 } pthread_lock;
115 116
116 #define CHECK_STATUS(name) if (status < 0) { perror(name); error=1; } 117 #define CHECK_STATUS(name) if (status != 0) { perror(name); error = 1; }
117 118
118 /* 119 /*
119 * Initialization. 120 * Initialization.
120 */ 121 */
122
123 #ifdef _HAVE_BSDI
124 static void _noop()
125 {
126 }
127
128 static void _init_thread _P0()
129 {
130 /* DO AN INIT BY STARTING THE THREAD */
131 static int dummy = 0;
132 pthread_t thread1;
133 pthread_create(&thread1, NULL, (void *) _noop, &dummy);
134 pthread_join(thread1, NULL);
135 }
136
137 #else /* !_HAVE_BSDI */
138
121 static void _init_thread _P0() 139 static void _init_thread _P0()
122 { 140 {
123 #if defined(_AIX) && defined(__GNUC__) 141 #if defined(_AIX) && defined(__GNUC__)
124 pthread_init(); 142 pthread_init();
125 #endif 143 #endif
126 } 144 }
145
146 #endif /* !_HAVE_BSDI */
127 147
128 /* 148 /*
129 * Thread support. 149 * Thread support.
130 */ 150 */
131 151
232 dprintf(("allocate_lock called\n")); 252 dprintf(("allocate_lock called\n"));
233 if (!initialized) 253 if (!initialized)
234 init_thread(); 254 init_thread();
235 255
236 lock = (pthread_lock *) malloc(sizeof(pthread_lock)); 256 lock = (pthread_lock *) malloc(sizeof(pthread_lock));
257 memset((void *)lock, '\0', sizeof(pthread_lock));
237 if (lock) { 258 if (lock) {
238 lock->locked = 0; 259 lock->locked = 0;
239 260
240 status = pthread_mutex_init(&lock->mut, 261 status = pthread_mutex_init(&lock->mut,
241 pthread_mutexattr_default); 262 pthread_mutexattr_default);