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 <time.h> 33 #include <signal.h> 34 #include <sched.h> 35 #include <limits.h> 36 #include <sys/types.h> 37 38 #if defined(__LP64__) 39 #define __RESERVED_INITIALIZER , {0} 40 #else 41 #define __RESERVED_INITIALIZER 42 #endif 43 44 typedef struct { 45 int volatile value; 46 #ifdef __LP64__ 47 char __reserved[36]; 48 #endif 49 } pthread_mutex_t; 50 51 #define __PTHREAD_MUTEX_INIT_VALUE 0 52 #define __PTHREAD_RECURSIVE_MUTEX_INIT_VALUE 0x4000 53 #define __PTHREAD_ERRORCHECK_MUTEX_INIT_VALUE 0x8000 54 55 #define PTHREAD_MUTEX_INITIALIZER {__PTHREAD_MUTEX_INIT_VALUE __RESERVED_INITIALIZER} 56 #define PTHREAD_RECURSIVE_MUTEX_INITIALIZER {__PTHREAD_RECURSIVE_MUTEX_INIT_VALUE __RESERVED_INITIALIZER} 57 #define PTHREAD_ERRORCHECK_MUTEX_INITIALIZER {__PTHREAD_ERRORCHECK_MUTEX_INIT_VALUE __RESERVED_INITIALIZER} 58 59 enum { 60 PTHREAD_MUTEX_NORMAL = 0, 61 PTHREAD_MUTEX_RECURSIVE = 1, 62 PTHREAD_MUTEX_ERRORCHECK = 2, 63 64 PTHREAD_MUTEX_ERRORCHECK_NP = PTHREAD_MUTEX_ERRORCHECK, 65 PTHREAD_MUTEX_RECURSIVE_NP = PTHREAD_MUTEX_RECURSIVE, 66 67 PTHREAD_MUTEX_DEFAULT = PTHREAD_MUTEX_NORMAL 68 }; 69 70 typedef struct { 71 int volatile value; 72 #ifdef __LP64__ 73 char __reserved[44]; 74 #endif 75 } pthread_cond_t; 76 77 #define PTHREAD_COND_INITIALIZER {0 __RESERVED_INITIALIZER} 78 79 typedef struct { 80 uint32_t flags; 81 void* stack_base; 82 size_t stack_size; 83 size_t guard_size; 84 int32_t sched_policy; 85 int32_t sched_priority; 86 #ifdef __LP64__ 87 char __reserved[16]; 88 #endif 89 } pthread_attr_t; 90 91 typedef long pthread_mutexattr_t; 92 typedef long pthread_condattr_t; 93 94 typedef long pthread_rwlockattr_t; 95 96 typedef struct { 97 #if !defined(__LP64__) 98 pthread_mutex_t __unused_lock; 99 pthread_cond_t __unused_cond; 100 #endif 101 volatile int32_t state; // 0=unlock, -1=writer lock, +n=reader lock 102 volatile int32_t writer_thread_id; 103 volatile int32_t pending_readers; 104 volatile int32_t pending_writers; 105 int32_t attr; 106 #ifdef __LP64__ 107 char __reserved[36]; 108 #else 109 char __reserved[12]; 110 #endif 111 112 } pthread_rwlock_t; 113 114 #ifdef __LP64__ 115 #define PTHREAD_RWLOCK_INITIALIZER { 0, 0, 0, 0, 0, { 0 } } 116 #else 117 #define PTHREAD_RWLOCK_INITIALIZER { PTHREAD_MUTEX_INITIALIZER, PTHREAD_COND_INITIALIZER, 0, 0, 0, 0, 0, { 0 } } 118 #endif 119 120 typedef int pthread_key_t; 121 typedef long pthread_t; 122 123 typedef volatile int pthread_once_t; 124 125 #define PTHREAD_ONCE_INIT 0 126 127 #if defined(__LP64__) 128 #define PTHREAD_STACK_MIN (4 * PAGE_SIZE) 129 #else 130 #define PTHREAD_STACK_MIN (2 * PAGE_SIZE) 131 #endif 132 133 #define PTHREAD_CREATE_DETACHED 0x00000001 134 #define PTHREAD_CREATE_JOINABLE 0x00000000 135 136 #define PTHREAD_PROCESS_PRIVATE 0 137 #define PTHREAD_PROCESS_SHARED 1 138 139 #define PTHREAD_SCOPE_SYSTEM 0 140 #define PTHREAD_SCOPE_PROCESS 1 141 142 __BEGIN_DECLS 143 144 int pthread_atfork(void (*)(void), void (*)(void), void(*)(void)); 145 146 int pthread_attr_destroy(pthread_attr_t*) __nonnull((1)); 147 int pthread_attr_getdetachstate(const pthread_attr_t*, int*) __nonnull((1, 2)); 148 int pthread_attr_getguardsize(const pthread_attr_t*, size_t*) __nonnull((1, 2)); 149 int pthread_attr_getschedparam(const pthread_attr_t*, struct sched_param*) __nonnull((1, 2)); 150 int pthread_attr_getschedpolicy(const pthread_attr_t*, int*) __nonnull((1, 2)); 151 int pthread_attr_getscope(const pthread_attr_t*, int*) __nonnull((1, 2)); 152 int pthread_attr_getstack(const pthread_attr_t*, void**, size_t*) __nonnull((1, 2, 3)); 153 int pthread_attr_getstacksize(const pthread_attr_t*, size_t*) __nonnull((1, 2)); 154 int pthread_attr_init(pthread_attr_t*) __nonnull((1)); 155 int pthread_attr_setdetachstate(pthread_attr_t*, int) __nonnull((1)); 156 int pthread_attr_setguardsize(pthread_attr_t*, size_t) __nonnull((1)); 157 int pthread_attr_setschedparam(pthread_attr_t*, const struct sched_param*) __nonnull((1, 2)); 158 int pthread_attr_setschedpolicy(pthread_attr_t*, int) __nonnull((1)); 159 int pthread_attr_setscope(pthread_attr_t*, int) __nonnull((1)); 160 int pthread_attr_setstack(pthread_attr_t*, void*, size_t) __nonnull((1)); 161 int pthread_attr_setstacksize(pthread_attr_t*, size_t stack_size) __nonnull((1)); 162 163 int pthread_condattr_destroy(pthread_condattr_t*) __nonnull((1)); 164 int pthread_condattr_getclock(const pthread_condattr_t*, clockid_t*) __nonnull((1, 2)); 165 int pthread_condattr_getpshared(const pthread_condattr_t*, int*) __nonnull((1, 2)); 166 int pthread_condattr_init(pthread_condattr_t*) __nonnull((1)); 167 int pthread_condattr_setclock(pthread_condattr_t*, clockid_t) __nonnull((1)); 168 int pthread_condattr_setpshared(pthread_condattr_t*, int) __nonnull((1)); 169 170 int pthread_cond_broadcast(pthread_cond_t*) __nonnull((1)); 171 int pthread_cond_destroy(pthread_cond_t*) __nonnull((1)); 172 int pthread_cond_init(pthread_cond_t*, const pthread_condattr_t*) __nonnull((1)); 173 int pthread_cond_signal(pthread_cond_t*) __nonnull((1)); 174 int pthread_cond_timedwait(pthread_cond_t*, pthread_mutex_t*, const struct timespec*) __nonnull((1, 2, 3)); 175 int pthread_cond_wait(pthread_cond_t*, pthread_mutex_t*) __nonnull((1, 2)); 176 177 int pthread_create(pthread_t*, pthread_attr_t const*, void *(*)(void*), void*) __nonnull((1, 3)); 178 int pthread_detach(pthread_t); 179 void pthread_exit(void*) __noreturn; 180 181 int pthread_equal(pthread_t, pthread_t); 182 183 int pthread_getattr_np(pthread_t, pthread_attr_t*) __nonnull((2)); 184 185 int pthread_getcpuclockid(pthread_t, clockid_t*) __nonnull((2)); 186 187 int pthread_getschedparam(pthread_t, int*, struct sched_param*) __nonnull((2, 3)); 188 189 void* pthread_getspecific(pthread_key_t); 190 191 pid_t pthread_gettid_np(pthread_t); 192 193 int pthread_join(pthread_t, void**); 194 195 int pthread_key_create(pthread_key_t*, void (*)(void*)) __nonnull((1)); 196 int pthread_key_delete(pthread_key_t); 197 198 int pthread_kill(pthread_t, int); 199 200 int pthread_mutexattr_destroy(pthread_mutexattr_t*) __nonnull((1)); 201 int pthread_mutexattr_getpshared(const pthread_mutexattr_t*, int*) __nonnull((1, 2)); 202 int pthread_mutexattr_gettype(const pthread_mutexattr_t*, int*) __nonnull((1, 2)); 203 int pthread_mutexattr_init(pthread_mutexattr_t*) __nonnull((1)); 204 int pthread_mutexattr_setpshared(pthread_mutexattr_t*, int) __nonnull((1)); 205 int pthread_mutexattr_settype(pthread_mutexattr_t*, int) __nonnull((1)); 206 207 int pthread_mutex_destroy(pthread_mutex_t*) __nonnull((1)); 208 int pthread_mutex_init(pthread_mutex_t*, const pthread_mutexattr_t*) __nonnull((1)); 209 int pthread_mutex_lock(pthread_mutex_t*) /* __nonnull((1)) */; 210 int pthread_mutex_timedlock(pthread_mutex_t*, const struct timespec*) __nonnull((1, 2)); 211 int pthread_mutex_trylock(pthread_mutex_t*) __nonnull((1)); 212 int pthread_mutex_unlock(pthread_mutex_t*) /* __nonnull((1)) */; 213 214 int pthread_once(pthread_once_t*, void (*)(void)) __nonnull((1, 2)); 215 216 int pthread_rwlockattr_destroy(pthread_rwlockattr_t*) __nonnull((1)); 217 int pthread_rwlockattr_getpshared(const pthread_rwlockattr_t*, int*) __nonnull((1, 2)); 218 int pthread_rwlockattr_init(pthread_rwlockattr_t*) __nonnull((1)); 219 int pthread_rwlockattr_setpshared(pthread_rwlockattr_t*, int) __nonnull((1)); 220 221 int pthread_rwlock_destroy(pthread_rwlock_t*) __nonnull((1)); 222 int pthread_rwlock_init(pthread_rwlock_t*, const pthread_rwlockattr_t*) __nonnull((1)); 223 int pthread_rwlock_rdlock(pthread_rwlock_t*) __nonnull((1)); 224 int pthread_rwlock_timedrdlock(pthread_rwlock_t*, const struct timespec*) __nonnull((1, 2)); 225 int pthread_rwlock_timedwrlock(pthread_rwlock_t*, const struct timespec*) __nonnull((1, 2)); 226 int pthread_rwlock_tryrdlock(pthread_rwlock_t*) __nonnull((1)); 227 int pthread_rwlock_trywrlock(pthread_rwlock_t*) __nonnull((1)); 228 int pthread_rwlock_unlock(pthread_rwlock_t *rwlock) __nonnull((1)); 229 int pthread_rwlock_wrlock(pthread_rwlock_t*) __nonnull((1)); 230 231 pthread_t pthread_self(void) __pure2; 232 233 int pthread_setname_np(pthread_t, const char*) __nonnull((2)); 234 235 int pthread_setschedparam(pthread_t, int, const struct sched_param*) __nonnull((3)); 236 237 int pthread_setspecific(pthread_key_t, const void*); 238 239 int pthread_sigmask(int, const sigset_t*, sigset_t*); 240 241 typedef void (*__pthread_cleanup_func_t)(void*); 242 243 typedef struct __pthread_cleanup_t { 244 struct __pthread_cleanup_t* __cleanup_prev; 245 __pthread_cleanup_func_t __cleanup_routine; 246 void* __cleanup_arg; 247 } __pthread_cleanup_t; 248 249 extern void __pthread_cleanup_push(__pthread_cleanup_t* c, __pthread_cleanup_func_t, void*); 250 extern void __pthread_cleanup_pop(__pthread_cleanup_t*, int); 251 252 /* Believe or not, the definitions of pthread_cleanup_push and 253 * pthread_cleanup_pop below are correct. Posix states that these 254 * can be implemented as macros that might introduce opening and 255 * closing braces, and that using setjmp/longjmp/return/break/continue 256 * between them results in undefined behavior. 257 */ 258 #define pthread_cleanup_push(routine, arg) \ 259 do { \ 260 __pthread_cleanup_t __cleanup; \ 261 __pthread_cleanup_push( &__cleanup, (routine), (arg) ); \ 262 263 #define pthread_cleanup_pop(execute) \ 264 __pthread_cleanup_pop( &__cleanup, (execute)); \ 265 } while (0); \ 266 267 268 #if !defined(__LP64__) 269 270 // Bionic additions that are deprecated even in the 32-bit ABI. 271 // 272 // TODO: Remove them once chromium_org / NFC have switched over. 273 int pthread_cond_timedwait_monotonic_np(pthread_cond_t*, pthread_mutex_t*, const struct timespec*); 274 int pthread_cond_timedwait_monotonic(pthread_cond_t*, pthread_mutex_t*, const struct timespec*); 275 276 int pthread_cond_timedwait_relative_np(pthread_cond_t*, pthread_mutex_t*, const struct timespec*) /* TODO: __attribute__((deprecated("use pthread_cond_timedwait instead")))*/; 277 #define HAVE_PTHREAD_COND_TIMEDWAIT_RELATIVE 1 /* TODO: stop defining this to push LP32 off this API sooner. */ 278 int pthread_cond_timeout_np(pthread_cond_t*, pthread_mutex_t*, unsigned) /* TODO: __attribute__((deprecated("use pthread_cond_timedwait instead")))*/; 279 280 int pthread_mutex_lock_timeout_np(pthread_mutex_t*, unsigned) __attribute__((deprecated("use pthread_mutex_timedlock instead"))); 281 282 #endif /* !defined(__LP64__) */ 283 284 __END_DECLS 285 286 #endif /* _PTHREAD_H_ */ 287