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 #ifndef _PTHREAD_H_ 29 #define _PTHREAD_H_ 30 31 #include <time.h> 32 #include <signal.h> 33 #include <sched.h> 34 #include <limits.h> 35 #include <sys/types.h> 36 37 /* 38 * Types 39 */ 40 typedef struct 41 { 42 int volatile value; 43 } pthread_mutex_t; 44 45 #define PTHREAD_MUTEX_INITIALIZER {0} 46 #define PTHREAD_RECURSIVE_MUTEX_INITIALIZER {0x4000} 47 #define PTHREAD_ERRORCHECK_MUTEX_INITIALIZER {0x8000} 48 49 enum { 50 PTHREAD_MUTEX_NORMAL = 0, 51 PTHREAD_MUTEX_RECURSIVE = 1, 52 PTHREAD_MUTEX_ERRORCHECK = 2, 53 54 PTHREAD_MUTEX_ERRORCHECK_NP = PTHREAD_MUTEX_ERRORCHECK, 55 PTHREAD_MUTEX_RECURSIVE_NP = PTHREAD_MUTEX_RECURSIVE, 56 57 PTHREAD_MUTEX_DEFAULT = PTHREAD_MUTEX_NORMAL 58 }; 59 60 61 62 typedef struct 63 { 64 int volatile value; 65 } pthread_cond_t; 66 67 typedef struct 68 { 69 uint32_t flags; 70 void * stack_base; 71 size_t stack_size; 72 size_t guard_size; 73 int32_t sched_policy; 74 int32_t sched_priority; 75 } pthread_attr_t; 76 77 typedef long pthread_mutexattr_t; 78 typedef long pthread_condattr_t; 79 80 typedef int pthread_key_t; 81 typedef long pthread_t; 82 83 typedef volatile int pthread_once_t; 84 85 /* 86 * Defines 87 */ 88 #define PTHREAD_COND_INITIALIZER {0} 89 90 #define PTHREAD_STACK_MIN (2 * PAGE_SIZE) 91 92 #define PTHREAD_CREATE_DETACHED 0x00000001 93 #define PTHREAD_CREATE_JOINABLE 0x00000000 94 95 #define PTHREAD_ONCE_INIT 0 96 97 #define PTHREAD_PROCESS_PRIVATE 0 98 #define PTHREAD_PROCESS_SHARED 1 99 100 #define PTHREAD_SCOPE_SYSTEM 0 101 #define PTHREAD_SCOPE_PROCESS 1 102 103 /* 104 * Prototypes 105 */ 106 #if __cplusplus 107 extern "C" { 108 #endif 109 110 int pthread_attr_init(pthread_attr_t * attr); 111 int pthread_attr_destroy(pthread_attr_t * attr); 112 113 int pthread_attr_setdetachstate(pthread_attr_t * attr, int state); 114 int pthread_attr_getdetachstate(pthread_attr_t const * attr, int * state); 115 116 int pthread_attr_setschedpolicy(pthread_attr_t * attr, int policy); 117 int pthread_attr_getschedpolicy(pthread_attr_t const * attr, int * policy); 118 119 int pthread_attr_setschedparam(pthread_attr_t * attr, struct sched_param const * param); 120 int pthread_attr_getschedparam(pthread_attr_t const * attr, struct sched_param * param); 121 122 int pthread_attr_setstacksize(pthread_attr_t * attr, size_t stack_size); 123 int pthread_attr_getstacksize(pthread_attr_t const * attr, size_t * stack_size); 124 125 int pthread_attr_setstackaddr(pthread_attr_t * attr, void * stackaddr); 126 int pthread_attr_getstackaddr(pthread_attr_t const * attr, void ** stackaddr); 127 128 int pthread_attr_setstack(pthread_attr_t * attr, void * stackaddr, size_t stack_size); 129 int pthread_attr_getstack(pthread_attr_t const * attr, void ** stackaddr, size_t * stack_size); 130 131 int pthread_attr_setguardsize(pthread_attr_t * attr, size_t guard_size); 132 int pthread_attr_getguardsize(pthread_attr_t const * attr, size_t * guard_size); 133 134 int pthread_attr_setscope(pthread_attr_t *attr, int scope); 135 int pthread_attr_getscope(pthread_attr_t const *attr); 136 137 int pthread_getattr_np(pthread_t thid, pthread_attr_t * attr); 138 139 int pthread_create(pthread_t *thread, pthread_attr_t const * attr, 140 void *(*start_routine)(void *), void * arg); 141 void pthread_exit(void * retval); 142 int pthread_join(pthread_t thid, void ** ret_val); 143 int pthread_detach(pthread_t thid); 144 145 pthread_t pthread_self(void); 146 int pthread_equal(pthread_t one, pthread_t two); 147 148 int pthread_getschedparam(pthread_t thid, int * policy, 149 struct sched_param * param); 150 int pthread_setschedparam(pthread_t thid, int poilcy, 151 struct sched_param const * param); 152 153 int pthread_mutexattr_init(pthread_mutexattr_t *attr); 154 int pthread_mutexattr_destroy(pthread_mutexattr_t *attr); 155 int pthread_mutexattr_gettype(const pthread_mutexattr_t *attr, int *type); 156 int pthread_mutexattr_settype(pthread_mutexattr_t *attr, int type); 157 int pthread_mutexattr_setpshared(pthread_mutexattr_t *attr, int pshared); 158 int pthread_mutexattr_getpshared(pthread_mutexattr_t *attr, int *pshared); 159 160 int pthread_mutex_init(pthread_mutex_t *mutex, 161 const pthread_mutexattr_t *attr); 162 int pthread_mutex_destroy(pthread_mutex_t *mutex); 163 int pthread_mutex_lock(pthread_mutex_t *mutex); 164 int pthread_mutex_unlock(pthread_mutex_t *mutex); 165 int pthread_mutex_trylock(pthread_mutex_t *mutex); 166 int pthread_mutex_timedlock(pthread_mutex_t *mutex, struct timespec* ts); 167 168 int pthread_cond_init(pthread_cond_t *cond, 169 const pthread_condattr_t *attr); 170 int pthread_cond_destroy(pthread_cond_t *cond); 171 int pthread_cond_broadcast(pthread_cond_t *cond); 172 int pthread_cond_signal(pthread_cond_t *cond); 173 int pthread_cond_wait(pthread_cond_t *cond, pthread_mutex_t *mutex); 174 int pthread_cond_timedwait(pthread_cond_t *cond, 175 pthread_mutex_t * mutex, 176 const struct timespec *abstime); 177 178 /* BIONIC: same as pthread_cond_timedwait, except the 'abstime' given refers 179 * to the CLOCK_MONOTONIC clock instead, to avoid any problems when 180 * the wall-clock time is changed brutally 181 */ 182 int pthread_cond_timedwait_monotonic_np(pthread_cond_t *cond, 183 pthread_mutex_t *mutex, 184 const struct timespec *abstime); 185 186 /* BIONIC: DEPRECATED. same as pthread_cond_timedwait_monotonic_np() 187 * unfortunately pthread_cond_timedwait_monotonic has shipped already 188 */ 189 int pthread_cond_timedwait_monotonic(pthread_cond_t *cond, 190 pthread_mutex_t *mutex, 191 const struct timespec *abstime); 192 193 #define HAVE_PTHREAD_COND_TIMEDWAIT_MONOTONIC 1 194 195 /* BIONIC: same as pthread_cond_timedwait, except the 'reltime' given refers 196 * is relative to the current time. 197 */ 198 int pthread_cond_timedwait_relative_np(pthread_cond_t *cond, 199 pthread_mutex_t *mutex, 200 const struct timespec *reltime); 201 202 #define HAVE_PTHREAD_COND_TIMEDWAIT_RELATIVE 1 203 204 205 206 int pthread_cond_timeout_np(pthread_cond_t *cond, 207 pthread_mutex_t * mutex, 208 unsigned msecs); 209 210 /* same as pthread_mutex_lock(), but will wait up to 'msecs' milli-seconds 211 * before returning. same return values than pthread_mutex_trylock though, i.e. 212 * returns EBUSY if the lock could not be acquired after the timeout 213 * expired. 214 */ 215 int pthread_mutex_lock_timeout_np(pthread_mutex_t *mutex, unsigned msecs); 216 217 int pthread_key_create(pthread_key_t *key, void (*destructor_function)(void *)); 218 int pthread_key_delete (pthread_key_t); 219 int pthread_setspecific(pthread_key_t key, const void *value); 220 void *pthread_getspecific(pthread_key_t key); 221 222 int pthread_kill(pthread_t tid, int sig); 223 int pthread_sigmask(int how, const sigset_t *set, sigset_t *oset); 224 225 int pthread_getcpuclockid(pthread_t tid, clockid_t *clockid); 226 227 int pthread_once(pthread_once_t *once_control, void (*init_routine)(void)); 228 229 typedef void (*__pthread_cleanup_func_t)(void*); 230 231 typedef struct __pthread_cleanup_t { 232 struct __pthread_cleanup_t* __cleanup_prev; 233 __pthread_cleanup_func_t __cleanup_routine; 234 void* __cleanup_arg; 235 } __pthread_cleanup_t; 236 237 extern void __pthread_cleanup_push(__pthread_cleanup_t* c, 238 __pthread_cleanup_func_t routine, 239 void* arg); 240 241 extern void __pthread_cleanup_pop(__pthread_cleanup_t* c, 242 int execute); 243 244 /* Believe or not, the definitions of pthread_cleanup_push and 245 * pthread_cleanup_pop below are correct. Posix states that these 246 * can be implemented as macros that might introduce opening and 247 * closing braces, and that using setjmp/longjmp/return/break/continue 248 * between them results in undefined behaviour. 249 * 250 * And indeed, GLibc and other C libraries use a similar definition 251 */ 252 #define pthread_cleanup_push(routine, arg) \ 253 do { \ 254 __pthread_cleanup_t __cleanup; \ 255 __pthread_cleanup_push( &__cleanup, (routine), (arg) ); \ 256 257 #define pthread_cleanup_pop(execute) \ 258 __pthread_cleanup_pop( &__cleanup, (execute)); \ 259 } while (0); 260 261 #if __cplusplus 262 } /* extern "C" */ 263 #endif 264 265 /************ TO FIX ************/ 266 267 #define LONG_LONG_MAX __LONG_LONG_MAX__ 268 #define LONG_LONG_MIN (-__LONG_LONG_MAX__ - 1) 269 270 #endif // _PTHREAD_H_ 271
