[444] | 1 | /* |
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| 2 | * Written by Joel Sherrill <joel.sherrill@OARcorp.com>. |
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| 3 | * |
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| 4 | * COPYRIGHT (c) 1989-2013, 2015. |
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| 5 | * On-Line Applications Research Corporation (OAR). |
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| 6 | * |
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| 7 | * Permission to use, copy, modify, and distribute this software for any |
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| 8 | * purpose without fee is hereby granted, provided that this entire notice |
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| 9 | * is included in all copies of any software which is or includes a copy |
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| 10 | * or modification of this software. |
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| 11 | * |
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| 12 | * THIS SOFTWARE IS BEING PROVIDED "AS IS", WITHOUT ANY EXPRESS OR IMPLIED |
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| 13 | * WARRANTY. IN PARTICULAR, THE AUTHOR MAKES NO REPRESENTATION |
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| 14 | * OR WARRANTY OF ANY KIND CONCERNING THE MERCHANTABILITY OF THIS |
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| 15 | * SOFTWARE OR ITS FITNESS FOR ANY PARTICULAR PURPOSE. |
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| 16 | */ |
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| 17 | |
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| 18 | #ifndef __PTHREAD_h |
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| 19 | #define __PTHREAD_h |
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| 20 | |
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| 21 | #ifdef __cplusplus |
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| 22 | extern "C" { |
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| 23 | #endif |
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| 24 | |
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| 25 | #include <unistd.h> |
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| 26 | |
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| 27 | #if defined(_POSIX_THREADS) |
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| 28 | |
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| 29 | #include <sys/types.h> |
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| 30 | #include <time.h> |
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| 31 | #include <sched.h> |
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| 32 | #include <sys/cdefs.h> |
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| 33 | |
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| 34 | struct _pthread_cleanup_context { |
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| 35 | void (*_routine)(void *); |
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| 36 | void *_arg; |
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| 37 | int _canceltype; |
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| 38 | struct _pthread_cleanup_context *_previous; |
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| 39 | }; |
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| 40 | |
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| 41 | /* Register Fork Handlers */ |
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| 42 | int pthread_atfork (void (*prepare)(void), void (*parent)(void), |
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| 43 | void (*child)(void)); |
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| 44 | |
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| 45 | /* Mutex Initialization Attributes, P1003.1c/Draft 10, p. 81 */ |
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| 46 | |
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| 47 | int pthread_mutexattr_init (pthread_mutexattr_t *__attr); |
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| 48 | int pthread_mutexattr_destroy (pthread_mutexattr_t *__attr); |
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| 49 | int pthread_mutexattr_getpshared (const pthread_mutexattr_t *__attr, |
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| 50 | int *__pshared); |
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| 51 | int pthread_mutexattr_setpshared (pthread_mutexattr_t *__attr, |
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| 52 | int __pshared); |
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| 53 | |
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| 54 | #if defined(_UNIX98_THREAD_MUTEX_ATTRIBUTES) |
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| 55 | |
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| 56 | /* Single UNIX Specification 2 Mutex Attributes types */ |
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| 57 | |
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| 58 | int pthread_mutexattr_gettype (const pthread_mutexattr_t *__attr, int *__kind); |
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| 59 | int pthread_mutexattr_settype (pthread_mutexattr_t *__attr, int __kind); |
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| 60 | |
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| 61 | #endif |
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| 62 | |
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| 63 | /* Initializing and Destroying a Mutex, P1003.1c/Draft 10, p. 87 */ |
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| 64 | |
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| 65 | int pthread_mutex_init (pthread_mutex_t *__mutex, |
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| 66 | const pthread_mutexattr_t *__attr); |
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| 67 | int pthread_mutex_destroy (pthread_mutex_t *__mutex); |
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| 68 | |
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| 69 | /* This is used to statically initialize a pthread_mutex_t. Example: |
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| 70 | |
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| 71 | pthread_mutex_t mutex = PTHREAD_MUTEX_INITIALIZER; |
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| 72 | */ |
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| 73 | |
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| 74 | #define PTHREAD_MUTEX_INITIALIZER _PTHREAD_MUTEX_INITIALIZER |
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| 75 | |
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| 76 | /* Locking and Unlocking a Mutex, P1003.1c/Draft 10, p. 93 |
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| 77 | NOTE: P1003.4b/D8 adds pthread_mutex_timedlock(), p. 29 */ |
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| 78 | |
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| 79 | int pthread_mutex_lock (pthread_mutex_t *__mutex); |
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| 80 | int pthread_mutex_trylock (pthread_mutex_t *__mutex); |
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| 81 | int pthread_mutex_unlock (pthread_mutex_t *__mutex); |
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| 82 | |
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| 83 | #if defined(_POSIX_TIMEOUTS) |
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| 84 | |
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| 85 | int pthread_mutex_timedlock (pthread_mutex_t *__mutex, |
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| 86 | const struct timespec *__timeout); |
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| 87 | |
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| 88 | #endif /* _POSIX_TIMEOUTS */ |
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| 89 | |
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| 90 | /* Condition Variable Initialization Attributes, P1003.1c/Draft 10, p. 96 */ |
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| 91 | |
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| 92 | int pthread_condattr_init (pthread_condattr_t *__attr); |
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| 93 | int pthread_condattr_destroy (pthread_condattr_t *__attr); |
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| 94 | |
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| 95 | int pthread_condattr_getclock (const pthread_condattr_t *__restrict __attr, |
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| 96 | clockid_t *__restrict __clock_id); |
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| 97 | int pthread_condattr_setclock (pthread_condattr_t *__attr, |
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| 98 | clockid_t __clock_id); |
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| 99 | |
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| 100 | int pthread_condattr_getpshared (const pthread_condattr_t *__attr, |
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| 101 | int *__pshared); |
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| 102 | int pthread_condattr_setpshared (pthread_condattr_t *__attr, int __pshared); |
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| 103 | |
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| 104 | /* Initializing and Destroying a Condition Variable, P1003.1c/Draft 10, p. 87 */ |
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| 105 | |
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| 106 | int pthread_cond_init (pthread_cond_t *__cond, |
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| 107 | const pthread_condattr_t *__attr); |
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| 108 | int pthread_cond_destroy (pthread_cond_t *__mutex); |
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| 109 | |
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| 110 | /* This is used to statically initialize a pthread_cond_t. Example: |
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| 111 | |
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| 112 | pthread_cond_t cond = PTHREAD_COND_INITIALIZER; |
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| 113 | */ |
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| 114 | |
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| 115 | #define PTHREAD_COND_INITIALIZER _PTHREAD_COND_INITIALIZER |
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| 116 | |
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| 117 | /* Broadcasting and Signaling a Condition, P1003.1c/Draft 10, p. 101 */ |
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| 118 | |
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| 119 | int pthread_cond_signal (pthread_cond_t *__cond); |
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| 120 | int pthread_cond_broadcast (pthread_cond_t *__cond); |
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| 121 | |
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| 122 | /* Waiting on a Condition, P1003.1c/Draft 10, p. 105 */ |
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| 123 | |
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| 124 | int pthread_cond_wait (pthread_cond_t *__cond, pthread_mutex_t *__mutex); |
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| 125 | |
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| 126 | int pthread_cond_timedwait (pthread_cond_t *__cond, |
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| 127 | pthread_mutex_t *__mutex, |
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| 128 | const struct timespec *__abstime); |
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| 129 | |
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| 130 | #if defined(_POSIX_THREAD_PRIORITY_SCHEDULING) |
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| 131 | |
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| 132 | /* Thread Creation Scheduling Attributes, P1003.1c/Draft 10, p. 120 */ |
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| 133 | |
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| 134 | int pthread_attr_setscope (pthread_attr_t *__attr, int __contentionscope); |
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| 135 | int pthread_attr_getscope (const pthread_attr_t *__attr, |
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| 136 | int *__contentionscope); |
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| 137 | int pthread_attr_setinheritsched (pthread_attr_t *__attr, |
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| 138 | int __inheritsched); |
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| 139 | int pthread_attr_getinheritsched (const pthread_attr_t *__attr, |
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| 140 | int *__inheritsched); |
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| 141 | int pthread_attr_setschedpolicy (pthread_attr_t *__attr, int __policy); |
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| 142 | int pthread_attr_getschedpolicy (const pthread_attr_t *__attr, |
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| 143 | int *__policy); |
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| 144 | |
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| 145 | #endif /* defined(_POSIX_THREAD_PRIORITY_SCHEDULING) */ |
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| 146 | |
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| 147 | int pthread_attr_setschedparam (pthread_attr_t *__attr, |
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| 148 | const struct sched_param *__param); |
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| 149 | int pthread_attr_getschedparam (const pthread_attr_t *__attr, |
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| 150 | struct sched_param *__param); |
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| 151 | |
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| 152 | #if defined(_POSIX_THREAD_PRIORITY_SCHEDULING) |
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| 153 | |
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| 154 | /* Dynamic Thread Scheduling Parameters Access, P1003.1c/Draft 10, p. 124 */ |
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| 155 | |
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| 156 | int pthread_getschedparam (pthread_t __pthread, int *__policy, |
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| 157 | struct sched_param *__param); |
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| 158 | int pthread_setschedparam (pthread_t __pthread, int __policy, |
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| 159 | struct sched_param *__param); |
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| 160 | |
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| 161 | /* Set Scheduling Priority of a Thread */ |
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| 162 | int pthread_setschedprio (pthread_t thread, int prio); |
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| 163 | |
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| 164 | #endif /* defined(_POSIX_THREAD_PRIORITY_SCHEDULING) */ |
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| 165 | |
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| 166 | #if __GNU_VISIBLE |
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| 167 | int pthread_getname_np(pthread_t, char *, size_t) __nonnull((2)); |
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| 168 | |
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| 169 | int pthread_setname_np(pthread_t, const char *) __nonnull((2)); |
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| 170 | #endif |
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| 171 | |
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| 172 | #if defined(_POSIX_THREAD_PRIO_INHERIT) || defined(_POSIX_THREAD_PRIO_PROTECT) |
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| 173 | |
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| 174 | /* Mutex Initialization Scheduling Attributes, P1003.1c/Draft 10, p. 128 */ |
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| 175 | |
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| 176 | int pthread_mutexattr_setprotocol (pthread_mutexattr_t *__attr, |
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| 177 | int __protocol); |
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| 178 | int pthread_mutexattr_getprotocol (const pthread_mutexattr_t *__attr, |
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| 179 | int *__protocol); |
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| 180 | int pthread_mutexattr_setprioceiling (pthread_mutexattr_t *__attr, |
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| 181 | int __prioceiling); |
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| 182 | int pthread_mutexattr_getprioceiling (const pthread_mutexattr_t *__attr, |
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| 183 | int *__prioceiling); |
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| 184 | |
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| 185 | #endif /* _POSIX_THREAD_PRIO_INHERIT || _POSIX_THREAD_PRIO_PROTECT */ |
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| 186 | |
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| 187 | #if defined(_POSIX_THREAD_PRIO_PROTECT) |
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| 188 | |
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| 189 | /* Change the Priority Ceiling of a Mutex, P1003.1c/Draft 10, p. 131 */ |
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| 190 | |
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| 191 | int pthread_mutex_setprioceiling (pthread_mutex_t *__mutex, |
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| 192 | int __prioceiling, int *__old_ceiling); |
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| 193 | int pthread_mutex_getprioceiling (pthread_mutex_t *__mutex, |
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| 194 | int *__prioceiling); |
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| 195 | |
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| 196 | #endif /* _POSIX_THREAD_PRIO_PROTECT */ |
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| 197 | |
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| 198 | /* Thread Creation Attributes, P1003.1c/Draft 10, p, 140 */ |
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| 199 | |
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| 200 | int pthread_attr_init (pthread_attr_t *__attr); |
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| 201 | int pthread_attr_destroy (pthread_attr_t *__attr); |
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| 202 | int pthread_attr_setstack (pthread_attr_t *attr, |
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| 203 | void *__stackaddr, size_t __stacksize); |
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| 204 | int pthread_attr_getstack (const pthread_attr_t *attr, |
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| 205 | void **__stackaddr, size_t *__stacksize); |
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| 206 | int pthread_attr_getstacksize (const pthread_attr_t *__attr, |
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| 207 | size_t *__stacksize); |
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| 208 | int pthread_attr_setstacksize (pthread_attr_t *__attr, size_t __stacksize); |
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| 209 | int pthread_attr_getstackaddr (const pthread_attr_t *__attr, |
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| 210 | void **__stackaddr); |
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| 211 | int pthread_attr_setstackaddr (pthread_attr_t *__attr, void *__stackaddr); |
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| 212 | int pthread_attr_getdetachstate (const pthread_attr_t *__attr, |
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| 213 | int *__detachstate); |
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| 214 | int pthread_attr_setdetachstate (pthread_attr_t *__attr, int __detachstate); |
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| 215 | int pthread_attr_getguardsize (const pthread_attr_t *__attr, |
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| 216 | size_t *__guardsize); |
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| 217 | int pthread_attr_setguardsize (pthread_attr_t *__attr, size_t __guardsize); |
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| 218 | |
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| 219 | /* POSIX thread APIs beyond the POSIX standard but provided |
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| 220 | * in GNU/Linux. They may be provided by other OSes for |
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| 221 | * compatibility. |
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| 222 | */ |
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| 223 | #if __GNU_VISIBLE |
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| 224 | #if defined(__rtems__) |
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| 225 | int pthread_attr_setaffinity_np (pthread_attr_t *__attr, |
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| 226 | size_t __cpusetsize, |
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| 227 | const cpu_set_t *__cpuset); |
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| 228 | int pthread_attr_getaffinity_np (const pthread_attr_t *__attr, |
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| 229 | size_t __cpusetsize, cpu_set_t *__cpuset); |
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| 230 | |
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| 231 | int pthread_setaffinity_np (pthread_t __id, size_t __cpusetsize, |
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| 232 | const cpu_set_t *__cpuset); |
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| 233 | int pthread_getaffinity_np (const pthread_t __id, size_t __cpusetsize, |
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| 234 | cpu_set_t *__cpuset); |
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| 235 | |
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| 236 | int pthread_getattr_np (pthread_t __id, pthread_attr_t *__attr); |
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| 237 | #endif /* defined(__rtems__) */ |
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| 238 | #endif /* __GNU_VISIBLE */ |
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| 239 | |
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| 240 | /* Thread Creation, P1003.1c/Draft 10, p. 144 */ |
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| 241 | |
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| 242 | int pthread_create (pthread_t *__pthread, const pthread_attr_t *__attr, |
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| 243 | void *(*__start_routine)(void *), void *__arg); |
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| 244 | |
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| 245 | /* Wait for Thread Termination, P1003.1c/Draft 10, p. 147 */ |
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| 246 | |
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| 247 | int pthread_join (pthread_t __pthread, void **__value_ptr); |
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| 248 | |
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| 249 | /* Detaching a Thread, P1003.1c/Draft 10, p. 149 */ |
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| 250 | |
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| 251 | int pthread_detach (pthread_t __pthread); |
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| 252 | |
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| 253 | /* Thread Termination, p1003.1c/Draft 10, p. 150 */ |
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| 254 | |
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| 255 | void pthread_exit (void *__value_ptr) __dead2; |
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| 256 | |
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| 257 | /* Get Calling Thread's ID, p1003.1c/Draft 10, p. XXX */ |
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| 258 | |
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| 259 | pthread_t pthread_self (void); |
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| 260 | |
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| 261 | /* Compare Thread IDs, p1003.1c/Draft 10, p. 153 */ |
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| 262 | |
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| 263 | int pthread_equal (pthread_t __t1, pthread_t __t2); |
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| 264 | |
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| 265 | /* Retrieve ID of a Thread's CPU Time Clock */ |
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| 266 | int pthread_getcpuclockid (pthread_t thread, clockid_t *clock_id); |
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| 267 | |
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| 268 | /* Get/Set Current Thread's Concurrency Level */ |
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| 269 | int pthread_setconcurrency (int new_level); |
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| 270 | int pthread_getconcurrency (void); |
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| 271 | |
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| 272 | #if __BSD_VISIBLE || __GNU_VISIBLE |
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| 273 | void pthread_yield (void); |
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| 274 | #endif |
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| 275 | |
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| 276 | /* Dynamic Package Initialization */ |
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| 277 | |
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| 278 | /* This is used to statically initialize a pthread_once_t. Example: |
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| 279 | |
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| 280 | pthread_once_t once = PTHREAD_ONCE_INIT; |
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| 281 | |
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| 282 | NOTE: This is named inconsistently -- it should be INITIALIZER. */ |
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| 283 | |
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| 284 | #define PTHREAD_ONCE_INIT _PTHREAD_ONCE_INIT |
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| 285 | |
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| 286 | int pthread_once (pthread_once_t *__once_control, |
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| 287 | void (*__init_routine)(void)); |
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| 288 | |
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| 289 | /* Thread-Specific Data Key Create, P1003.1c/Draft 10, p. 163 */ |
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| 290 | |
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| 291 | int pthread_key_create (pthread_key_t *__key, |
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| 292 | void (*__destructor)(void *)); |
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| 293 | |
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| 294 | /* Thread-Specific Data Management, P1003.1c/Draft 10, p. 165 */ |
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| 295 | |
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| 296 | int pthread_setspecific (pthread_key_t __key, const void *__value); |
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| 297 | void * pthread_getspecific (pthread_key_t __key); |
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| 298 | |
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| 299 | /* Thread-Specific Data Key Deletion, P1003.1c/Draft 10, p. 167 */ |
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| 300 | |
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| 301 | int pthread_key_delete (pthread_key_t __key); |
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| 302 | |
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| 303 | /* Execution of a Thread, P1003.1c/Draft 10, p. 181 */ |
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| 304 | |
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| 305 | #define PTHREAD_CANCEL_ENABLE 0 |
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| 306 | #define PTHREAD_CANCEL_DISABLE 1 |
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| 307 | |
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| 308 | #define PTHREAD_CANCEL_DEFERRED 0 |
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| 309 | #define PTHREAD_CANCEL_ASYNCHRONOUS 1 |
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| 310 | |
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| 311 | #define PTHREAD_CANCELED ((void *) -1) |
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| 312 | |
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| 313 | int pthread_cancel (pthread_t __pthread); |
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| 314 | |
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| 315 | /* Setting Cancelability State, P1003.1c/Draft 10, p. 183 */ |
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| 316 | |
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| 317 | int pthread_setcancelstate (int __state, int *__oldstate); |
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| 318 | int pthread_setcanceltype (int __type, int *__oldtype); |
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| 319 | void pthread_testcancel (void); |
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| 320 | |
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| 321 | /* Establishing Cancellation Handlers, P1003.1c/Draft 10, p. 184 */ |
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| 322 | |
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| 323 | void _pthread_cleanup_push (struct _pthread_cleanup_context *_context, |
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| 324 | void (*_routine)(void *), void *_arg); |
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| 325 | |
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| 326 | void _pthread_cleanup_pop (struct _pthread_cleanup_context *_context, |
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| 327 | int _execute); |
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| 328 | |
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| 329 | /* It is intentional to open and close the scope in two different macros */ |
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| 330 | #define pthread_cleanup_push(_routine, _arg) \ |
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| 331 | do { \ |
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| 332 | struct _pthread_cleanup_context _pthread_clup_ctx; \ |
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| 333 | _pthread_cleanup_push(&_pthread_clup_ctx, (_routine), (_arg)) |
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| 334 | |
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| 335 | #define pthread_cleanup_pop(_execute) \ |
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| 336 | _pthread_cleanup_pop(&_pthread_clup_ctx, (_execute)); \ |
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| 337 | } while (0) |
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| 338 | |
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| 339 | #if __GNU_VISIBLE |
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| 340 | void _pthread_cleanup_push_defer (struct _pthread_cleanup_context *_context, |
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| 341 | void (*_routine)(void *), void *_arg); |
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| 342 | |
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| 343 | void _pthread_cleanup_pop_restore (struct _pthread_cleanup_context *_context, |
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| 344 | int _execute); |
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| 345 | |
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| 346 | /* It is intentional to open and close the scope in two different macros */ |
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| 347 | #define pthread_cleanup_push_defer_np(_routine, _arg) \ |
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| 348 | do { \ |
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| 349 | struct _pthread_cleanup_context _pthread_clup_ctx; \ |
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| 350 | _pthread_cleanup_push_defer(&_pthread_clup_ctx, (_routine), (_arg)) |
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| 351 | |
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| 352 | #define pthread_cleanup_pop_restore_np(_execute) \ |
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| 353 | _pthread_cleanup_pop_restore(&_pthread_clup_ctx, (_execute)); \ |
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| 354 | } while (0) |
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| 355 | #endif /* __GNU_VISIBLE */ |
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| 356 | |
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| 357 | #if defined(_POSIX_THREAD_CPUTIME) |
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| 358 | |
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| 359 | /* Accessing a Thread CPU-time Clock, P1003.4b/D8, p. 58 */ |
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| 360 | |
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| 361 | int pthread_getcpuclockid (pthread_t __pthread_id, clockid_t *__clock_id); |
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| 362 | |
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| 363 | #endif /* defined(_POSIX_THREAD_CPUTIME) */ |
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| 364 | |
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| 365 | |
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| 366 | #endif /* defined(_POSIX_THREADS) */ |
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| 367 | |
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| 368 | #if defined(_POSIX_BARRIERS) |
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| 369 | |
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| 370 | int pthread_barrierattr_init (pthread_barrierattr_t *__attr); |
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| 371 | int pthread_barrierattr_destroy (pthread_barrierattr_t *__attr); |
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| 372 | int pthread_barrierattr_getpshared (const pthread_barrierattr_t *__attr, |
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| 373 | int *__pshared); |
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| 374 | int pthread_barrierattr_setpshared (pthread_barrierattr_t *__attr, |
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| 375 | int __pshared); |
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| 376 | |
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| 377 | #define PTHREAD_BARRIER_SERIAL_THREAD -1 |
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| 378 | |
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| 379 | int pthread_barrier_init (pthread_barrier_t *__barrier, |
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| 380 | const pthread_barrierattr_t *__attr, |
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| 381 | unsigned __count); |
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| 382 | int pthread_barrier_destroy (pthread_barrier_t *__barrier); |
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| 383 | int pthread_barrier_wait (pthread_barrier_t *__barrier); |
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| 384 | |
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| 385 | #endif /* defined(_POSIX_BARRIERS) */ |
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| 386 | |
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| 387 | #if defined(_POSIX_SPIN_LOCKS) |
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| 388 | |
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| 389 | int pthread_spin_init (pthread_spinlock_t *__spinlock, int __pshared); |
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| 390 | int pthread_spin_destroy (pthread_spinlock_t *__spinlock); |
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| 391 | int pthread_spin_lock (pthread_spinlock_t *__spinlock); |
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| 392 | int pthread_spin_trylock (pthread_spinlock_t *__spinlock); |
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| 393 | int pthread_spin_unlock (pthread_spinlock_t *__spinlock); |
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| 394 | |
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| 395 | #endif /* defined(_POSIX_SPIN_LOCKS) */ |
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| 396 | |
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| 397 | #if defined(_POSIX_READER_WRITER_LOCKS) |
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| 398 | |
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| 399 | /* This is used to statically initialize a pthread_rwlock_t. Example: |
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| 400 | |
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| 401 | pthread_mutex_t mutex = PTHREAD_RWLOCK_INITIALIZER; |
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| 402 | */ |
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| 403 | |
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| 404 | #define PTHREAD_RWLOCK_INITIALIZER _PTHREAD_RWLOCK_INITIALIZER |
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| 405 | |
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| 406 | int pthread_rwlockattr_init (pthread_rwlockattr_t *__attr); |
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| 407 | int pthread_rwlockattr_destroy (pthread_rwlockattr_t *__attr); |
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| 408 | int pthread_rwlockattr_getpshared (const pthread_rwlockattr_t *__attr, |
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| 409 | int *__pshared); |
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| 410 | int pthread_rwlockattr_setpshared (pthread_rwlockattr_t *__attr, |
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| 411 | int __pshared); |
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| 412 | |
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| 413 | int pthread_rwlock_init (pthread_rwlock_t *__rwlock, |
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| 414 | const pthread_rwlockattr_t *__attr); |
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| 415 | int pthread_rwlock_destroy (pthread_rwlock_t *__rwlock); |
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| 416 | int pthread_rwlock_rdlock (pthread_rwlock_t *__rwlock); |
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| 417 | int pthread_rwlock_tryrdlock (pthread_rwlock_t *__rwlock); |
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| 418 | int pthread_rwlock_timedrdlock (pthread_rwlock_t *__rwlock, |
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| 419 | const struct timespec *__abstime); |
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| 420 | int pthread_rwlock_unlock (pthread_rwlock_t *__rwlock); |
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| 421 | int pthread_rwlock_wrlock (pthread_rwlock_t *__rwlock); |
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| 422 | int pthread_rwlock_trywrlock (pthread_rwlock_t *__rwlock); |
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| 423 | int pthread_rwlock_timedwrlock (pthread_rwlock_t *__rwlock, |
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| 424 | const struct timespec *__abstime); |
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| 425 | |
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| 426 | #endif /* defined(_POSIX_READER_WRITER_LOCKS) */ |
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| 427 | |
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| 428 | |
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| 429 | #ifdef __cplusplus |
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| 430 | } |
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| 431 | #endif |
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| 432 | |
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| 433 | #endif |
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| 434 | /* end of include file */ |
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