pthread.h revision 95fa061678400315ee757758bf5f9146176d47a0 
1/*
2 * Copyright (C) 2008 The Android Open Source Project
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 *  * Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer.
10 *  * Redistributions in binary form must reproduce the above copyright
11 *    notice, this list of conditions and the following disclaimer in
12 *    the documentation and/or other materials provided with the
13 *    distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
16 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
17 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
18 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
19 * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
21 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
22 * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
23 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
24 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
25 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * SUCH DAMAGE.
27 */
28
29#ifndef _PTHREAD_H_
30#define _PTHREAD_H_
31
32#include <limits.h>
33#include <bits/pthread_types.h>
34#include <sched.h>
35#include <sys/cdefs.h>
36#include <sys/types.h>
37#include <time.h>
38
39__BEGIN_DECLS
40
41#if defined(__clang__)
42#pragma clang diagnostic push
43#pragma clang diagnostic ignored "-Wnullability-completeness"
44#endif
45
46enum {
47    PTHREAD_MUTEX_NORMAL = 0,
48    PTHREAD_MUTEX_RECURSIVE = 1,
49    PTHREAD_MUTEX_ERRORCHECK = 2,
50
51    PTHREAD_MUTEX_ERRORCHECK_NP = PTHREAD_MUTEX_ERRORCHECK,
52    PTHREAD_MUTEX_RECURSIVE_NP  = PTHREAD_MUTEX_RECURSIVE,
53
54    PTHREAD_MUTEX_DEFAULT = PTHREAD_MUTEX_NORMAL
55};
56
57#define PTHREAD_MUTEX_INITIALIZER { { ((PTHREAD_MUTEX_NORMAL & 3) << 14) } }
58#define PTHREAD_RECURSIVE_MUTEX_INITIALIZER_NP { { ((PTHREAD_MUTEX_RECURSIVE & 3) << 14) } }
59#define PTHREAD_ERRORCHECK_MUTEX_INITIALIZER_NP { { ((PTHREAD_MUTEX_ERRORCHECK & 3) << 14) } }
60
61#define PTHREAD_COND_INITIALIZER  { { 0 } }
62
63#define PTHREAD_RWLOCK_INITIALIZER  { { 0 } }
64
65enum {
66  PTHREAD_RWLOCK_PREFER_READER_NP = 0,
67  PTHREAD_RWLOCK_PREFER_WRITER_NONRECURSIVE_NP = 1,
68};
69
70#define PTHREAD_ONCE_INIT 0
71
72#define PTHREAD_BARRIER_SERIAL_THREAD -1
73
74#if defined(__LP64__)
75#define PTHREAD_STACK_MIN (4 * PAGE_SIZE)
76#else
77#define PTHREAD_STACK_MIN (2 * PAGE_SIZE)
78#endif
79
80#define PTHREAD_CREATE_DETACHED  0x00000001
81#define PTHREAD_CREATE_JOINABLE  0x00000000
82
83#define PTHREAD_PROCESS_PRIVATE  0
84#define PTHREAD_PROCESS_SHARED   1
85
86#define PTHREAD_SCOPE_SYSTEM     0
87#define PTHREAD_SCOPE_PROCESS    1
88
89int pthread_atfork(void (*)(void), void (*)(void), void (*)(void)) __INTRODUCED_IN(12);
90
91int pthread_attr_destroy(pthread_attr_t* _Nonnull);
92int pthread_attr_getdetachstate(const pthread_attr_t* _Nonnull, int* _Nonnull);
93int pthread_attr_getguardsize(const pthread_attr_t* _Nonnull, size_t* _Nonnull);
94int pthread_attr_getschedparam(const pthread_attr_t* _Nonnull, struct sched_param* _Nonnull);
95int pthread_attr_getschedpolicy(const pthread_attr_t* _Nonnull, int* _Nonnull);
96int pthread_attr_getscope(const pthread_attr_t* _Nonnull, int* _Nonnull);
97int pthread_attr_getstack(const pthread_attr_t* _Nonnull, void** _Nonnull, size_t* _Nonnull);
98int pthread_attr_getstacksize(const pthread_attr_t* _Nonnull, size_t* _Nonnull);
99int pthread_attr_init(pthread_attr_t* _Nonnull);
100int pthread_attr_setdetachstate(pthread_attr_t* _Nonnull, int);
101int pthread_attr_setguardsize(pthread_attr_t* _Nonnull, size_t);
102int pthread_attr_setschedparam(pthread_attr_t* _Nonnull, const struct sched_param* _Nonnull);
103int pthread_attr_setschedpolicy(pthread_attr_t* _Nonnull, int);
104int pthread_attr_setscope(pthread_attr_t* _Nonnull, int);
105int pthread_attr_setstack(pthread_attr_t* _Nonnull, void*, size_t);
106int pthread_attr_setstacksize(pthread_attr_t* _Nonnull, size_t);
107
108int pthread_condattr_destroy(pthread_condattr_t* _Nonnull);
109int pthread_condattr_getclock(const pthread_condattr_t* _Nonnull, clockid_t* _Nonnull)
110  __INTRODUCED_IN(21);
111int pthread_condattr_getpshared(const pthread_condattr_t* _Nonnull, int* _Nonnull);
112int pthread_condattr_init(pthread_condattr_t* _Nonnull);
113int pthread_condattr_setclock(pthread_condattr_t* _Nonnull, clockid_t) __INTRODUCED_IN(21);
114int pthread_condattr_setpshared(pthread_condattr_t* _Nonnull, int);
115
116int pthread_cond_broadcast(pthread_cond_t* _Nonnull);
117int pthread_cond_destroy(pthread_cond_t* _Nonnull);
118int pthread_cond_init(pthread_cond_t* _Nonnull, const pthread_condattr_t*);
119int pthread_cond_signal(pthread_cond_t* _Nonnull);
120int pthread_cond_timedwait(pthread_cond_t* _Nonnull, pthread_mutex_t* _Nonnull,
121                           const struct timespec* _Nonnull);
122int pthread_cond_wait(pthread_cond_t* _Nonnull, pthread_mutex_t* _Nonnull);
123
124int pthread_create(pthread_t* _Nonnull, pthread_attr_t const*,
125                   void* (* _Nonnull start_routine)(void*), void*);
126int pthread_detach(pthread_t);
127void pthread_exit(void*) __noreturn;
128
129int pthread_equal(pthread_t, pthread_t);
130
131int pthread_getattr_np(pthread_t, pthread_attr_t* _Nonnull);
132
133int pthread_getcpuclockid(pthread_t, clockid_t* _Nonnull);
134
135int pthread_getschedparam(pthread_t, int* _Nonnull, struct sched_param* _Nonnull);
136
137void* pthread_getspecific(pthread_key_t);
138
139pid_t pthread_gettid_np(pthread_t) __INTRODUCED_IN(21);
140
141int pthread_join(pthread_t, void**);
142
143int pthread_key_create(pthread_key_t* _Nonnull, void (*)(void*));
144int pthread_key_delete(pthread_key_t);
145
146int pthread_mutexattr_destroy(pthread_mutexattr_t* _Nonnull);
147int pthread_mutexattr_getpshared(const pthread_mutexattr_t* _Nonnull, int* _Nonnull);
148int pthread_mutexattr_gettype(const pthread_mutexattr_t* _Nonnull, int* _Nonnull);
149int pthread_mutexattr_init(pthread_mutexattr_t* _Nonnull);
150int pthread_mutexattr_setpshared(pthread_mutexattr_t* _Nonnull, int);
151int pthread_mutexattr_settype(pthread_mutexattr_t* _Nonnull, int);
152
153int pthread_mutex_destroy(pthread_mutex_t* _Nonnull);
154int pthread_mutex_init(pthread_mutex_t* _Nonnull, const pthread_mutexattr_t*);
155int pthread_mutex_lock(pthread_mutex_t* _Nonnull);
156int pthread_mutex_timedlock(pthread_mutex_t* _Nonnull, const struct timespec* _Nonnull)
157  __INTRODUCED_IN(21);
158int pthread_mutex_trylock(pthread_mutex_t* _Nonnull);
159int pthread_mutex_unlock(pthread_mutex_t* _Nonnull);
160
161int pthread_once(pthread_once_t* _Nonnull, void (* _Nonnull init_routine)(void));
162
163int pthread_rwlockattr_init(pthread_rwlockattr_t* _Nonnull);
164int pthread_rwlockattr_destroy(pthread_rwlockattr_t* _Nonnull);
165int pthread_rwlockattr_getpshared(const pthread_rwlockattr_t* _Nonnull, int* _Nonnull);
166int pthread_rwlockattr_setpshared(pthread_rwlockattr_t* _Nonnull, int);
167int pthread_rwlockattr_getkind_np(const pthread_rwlockattr_t* _Nonnull, int* _Nonnull)
168  __INTRODUCED_IN(23);
169int pthread_rwlockattr_setkind_np(pthread_rwlockattr_t* _Nonnull, int) __INTRODUCED_IN(23);
170
171int pthread_rwlock_destroy(pthread_rwlock_t* _Nonnull);
172int pthread_rwlock_init(pthread_rwlock_t* _Nonnull, const pthread_rwlockattr_t*);
173int pthread_rwlock_rdlock(pthread_rwlock_t* _Nonnull);
174int pthread_rwlock_timedrdlock(pthread_rwlock_t* _Nonnull, const struct timespec* _Nonnull);
175int pthread_rwlock_timedwrlock(pthread_rwlock_t* _Nonnull, const struct timespec* _Nonnull);
176int pthread_rwlock_tryrdlock(pthread_rwlock_t* _Nonnull);
177int pthread_rwlock_trywrlock(pthread_rwlock_t* _Nonnull);
178int pthread_rwlock_unlock(pthread_rwlock_t* _Nonnull);
179int pthread_rwlock_wrlock(pthread_rwlock_t* _Nonnull);
180
181int pthread_barrierattr_init(pthread_barrierattr_t* _Nonnull attr) __INTRODUCED_IN(24);
182int pthread_barrierattr_destroy(pthread_barrierattr_t* _Nonnull attr) __INTRODUCED_IN(24);
183int pthread_barrierattr_getpshared(const pthread_barrierattr_t* _Nonnull attr,
184                                   int* _Nonnull pshared) __INTRODUCED_IN(24);
185int pthread_barrierattr_setpshared(pthread_barrierattr_t* _Nonnull attr, int pshared)
186  __INTRODUCED_IN(24);
187
188int pthread_barrier_init(pthread_barrier_t* _Nonnull, const pthread_barrierattr_t*, unsigned)
189  __INTRODUCED_IN(24);
190int pthread_barrier_destroy(pthread_barrier_t* _Nonnull) __INTRODUCED_IN(24);
191int pthread_barrier_wait(pthread_barrier_t* _Nonnull) __INTRODUCED_IN(24);
192
193int pthread_spin_destroy(pthread_spinlock_t* _Nonnull) __INTRODUCED_IN(24);
194int pthread_spin_init(pthread_spinlock_t* _Nonnull, int) __INTRODUCED_IN(24);
195int pthread_spin_lock(pthread_spinlock_t* _Nonnull) __INTRODUCED_IN(24);
196int pthread_spin_trylock(pthread_spinlock_t* _Nonnull) __INTRODUCED_IN(24);
197int pthread_spin_unlock(pthread_spinlock_t* _Nonnull) __INTRODUCED_IN(24);
198
199pthread_t pthread_self(void) __attribute_const__;
200
201#if defined(__USE_GNU)
202int pthread_getname_np(pthread_t, char* _Nonnull, size_t) __INTRODUCED_IN_FUTURE;
203#endif
204/* TODO: this should be __USE_GNU too. */
205int pthread_setname_np(pthread_t, const char* _Nonnull);
206
207int pthread_setschedparam(pthread_t, int, const struct sched_param* _Nonnull);
208
209int pthread_setspecific(pthread_key_t, const void*);
210
211typedef void (*__pthread_cleanup_func_t)(void*);
212
213typedef struct __pthread_cleanup_t {
214  struct __pthread_cleanup_t*   __cleanup_prev;
215  __pthread_cleanup_func_t      __cleanup_routine;
216  void*                         __cleanup_arg;
217} __pthread_cleanup_t;
218
219void __pthread_cleanup_push(__pthread_cleanup_t* c, __pthread_cleanup_func_t, void*);
220void __pthread_cleanup_pop(__pthread_cleanup_t*, int);
221
222/* Believe or not, the definitions of pthread_cleanup_push and
223 * pthread_cleanup_pop below are correct. Posix states that these
224 * can be implemented as macros that might introduce opening and
225 * closing braces, and that using setjmp/longjmp/return/break/continue
226 * between them results in undefined behavior.
227 */
228#define  pthread_cleanup_push(routine, arg)                      \
229    do {                                                         \
230        __pthread_cleanup_t  __cleanup;                          \
231        __pthread_cleanup_push( &__cleanup, (routine), (arg) );  \
232
233#define  pthread_cleanup_pop(execute)                  \
234        __pthread_cleanup_pop( &__cleanup, (execute)); \
235    } while (0);                                       \
236
237#if defined(__clang__)
238#pragma clang diagnostic pop
239#endif
240
241__END_DECLS
242
243#endif /* _PTHREAD_H_ */
244