| /* |
| * Copyright (C) 2008 The Android Open Source Project |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * * Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * * Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in |
| * the documentation and/or other materials provided with the |
| * distribution. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS |
| * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE |
| * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, |
| * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, |
| * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS |
| * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED |
| * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, |
| * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT |
| * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| * SUCH DAMAGE. |
| */ |
| #ifndef _PTHREAD_H_ |
| #define _PTHREAD_H_ |
| |
| #include <time.h> |
| #include <signal.h> |
| #include <sched.h> |
| #include <limits.h> |
| #include <sys/types.h> |
| |
| /* |
| * Types |
| */ |
| typedef struct |
| { |
| int volatile value; |
| } pthread_mutex_t; |
| |
| #define __PTHREAD_MUTEX_INIT_VALUE 0 |
| #define __PTHREAD_RECURSIVE_MUTEX_INIT_VALUE 0x4000 |
| #define __PTHREAD_ERRORCHECK_MUTEX_INIT_VALUE 0x8000 |
| |
| #define PTHREAD_MUTEX_INITIALIZER {__PTHREAD_MUTEX_INIT_VALUE} |
| #define PTHREAD_RECURSIVE_MUTEX_INITIALIZER {__PTHREAD_RECURSIVE_MUTEX_INIT_VALUE} |
| #define PTHREAD_ERRORCHECK_MUTEX_INITIALIZER {__PTHREAD_ERRORCHECK_MUTEX_INIT_VALUE} |
| |
| enum { |
| PTHREAD_MUTEX_NORMAL = 0, |
| PTHREAD_MUTEX_RECURSIVE = 1, |
| PTHREAD_MUTEX_ERRORCHECK = 2, |
| |
| PTHREAD_MUTEX_ERRORCHECK_NP = PTHREAD_MUTEX_ERRORCHECK, |
| PTHREAD_MUTEX_RECURSIVE_NP = PTHREAD_MUTEX_RECURSIVE, |
| |
| PTHREAD_MUTEX_DEFAULT = PTHREAD_MUTEX_NORMAL |
| }; |
| |
| |
| |
| typedef struct |
| { |
| int volatile value; |
| } pthread_cond_t; |
| |
| typedef struct |
| { |
| uint32_t flags; |
| void * stack_base; |
| size_t stack_size; |
| size_t guard_size; |
| int32_t sched_policy; |
| int32_t sched_priority; |
| } pthread_attr_t; |
| |
| typedef long pthread_mutexattr_t; |
| typedef long pthread_condattr_t; |
| |
| typedef int pthread_key_t; |
| typedef long pthread_t; |
| |
| typedef volatile int pthread_once_t; |
| |
| /* |
| * Defines |
| */ |
| #define PTHREAD_COND_INITIALIZER {0} |
| |
| #define PTHREAD_STACK_MIN (2 * PAGE_SIZE) |
| |
| #define PTHREAD_CREATE_DETACHED 0x00000001 |
| #define PTHREAD_CREATE_JOINABLE 0x00000000 |
| |
| #define PTHREAD_ONCE_INIT 0 |
| |
| #define PTHREAD_PROCESS_PRIVATE 0 |
| #define PTHREAD_PROCESS_SHARED 1 |
| |
| #define PTHREAD_SCOPE_SYSTEM 0 |
| #define PTHREAD_SCOPE_PROCESS 1 |
| |
| /* |
| * Prototypes |
| */ |
| #ifdef __cplusplus |
| extern "C" { |
| #endif |
| |
| int pthread_attr_init(pthread_attr_t * attr); |
| int pthread_attr_destroy(pthread_attr_t * attr); |
| |
| int pthread_attr_setdetachstate(pthread_attr_t * attr, int state); |
| int pthread_attr_getdetachstate(pthread_attr_t const * attr, int * state); |
| |
| int pthread_attr_setschedpolicy(pthread_attr_t * attr, int policy); |
| int pthread_attr_getschedpolicy(pthread_attr_t const * attr, int * policy); |
| |
| int pthread_attr_setschedparam(pthread_attr_t * attr, struct sched_param const * param); |
| int pthread_attr_getschedparam(pthread_attr_t const * attr, struct sched_param * param); |
| |
| int pthread_attr_setstacksize(pthread_attr_t * attr, size_t stack_size); |
| int pthread_attr_getstacksize(pthread_attr_t const * attr, size_t * stack_size); |
| |
| int pthread_attr_setstackaddr(pthread_attr_t * attr, void * stackaddr); |
| int pthread_attr_getstackaddr(pthread_attr_t const * attr, void ** stackaddr); |
| |
| int pthread_attr_setstack(pthread_attr_t * attr, void * stackaddr, size_t stack_size); |
| int pthread_attr_getstack(pthread_attr_t const * attr, void ** stackaddr, size_t * stack_size); |
| |
| int pthread_attr_setguardsize(pthread_attr_t * attr, size_t guard_size); |
| int pthread_attr_getguardsize(pthread_attr_t const * attr, size_t * guard_size); |
| |
| int pthread_attr_setscope(pthread_attr_t *attr, int scope); |
| int pthread_attr_getscope(pthread_attr_t const *attr); |
| |
| int pthread_getattr_np(pthread_t thid, pthread_attr_t * attr); |
| |
| int pthread_create(pthread_t *thread, pthread_attr_t const * attr, |
| void *(*start_routine)(void *), void * arg); |
| void pthread_exit(void * retval); |
| int pthread_join(pthread_t thid, void ** ret_val); |
| int pthread_detach(pthread_t thid); |
| |
| pthread_t pthread_self(void); |
| int pthread_equal(pthread_t one, pthread_t two); |
| |
| int pthread_getschedparam(pthread_t thid, int * policy, |
| struct sched_param * param); |
| int pthread_setschedparam(pthread_t thid, int policy, |
| struct sched_param const * param); |
| |
| int pthread_mutexattr_init(pthread_mutexattr_t *attr); |
| int pthread_mutexattr_destroy(pthread_mutexattr_t *attr); |
| int pthread_mutexattr_gettype(const pthread_mutexattr_t *attr, int *type); |
| int pthread_mutexattr_settype(pthread_mutexattr_t *attr, int type); |
| int pthread_mutexattr_setpshared(pthread_mutexattr_t *attr, int pshared); |
| int pthread_mutexattr_getpshared(pthread_mutexattr_t *attr, int *pshared); |
| |
| int pthread_mutex_init(pthread_mutex_t *mutex, |
| const pthread_mutexattr_t *attr); |
| int pthread_mutex_destroy(pthread_mutex_t *mutex); |
| int pthread_mutex_lock(pthread_mutex_t *mutex); |
| int pthread_mutex_unlock(pthread_mutex_t *mutex); |
| int pthread_mutex_trylock(pthread_mutex_t *mutex); |
| int pthread_mutex_timedlock(pthread_mutex_t *mutex, struct timespec* ts); |
| |
| int pthread_condattr_init(pthread_condattr_t *attr); |
| int pthread_condattr_getpshared(pthread_condattr_t *attr, int *pshared); |
| int pthread_condattr_setpshared(pthread_condattr_t* attr, int pshared); |
| int pthread_condattr_destroy(pthread_condattr_t *attr); |
| |
| int pthread_cond_init(pthread_cond_t *cond, |
| const pthread_condattr_t *attr); |
| int pthread_cond_destroy(pthread_cond_t *cond); |
| int pthread_cond_broadcast(pthread_cond_t *cond); |
| int pthread_cond_signal(pthread_cond_t *cond); |
| int pthread_cond_wait(pthread_cond_t *cond, pthread_mutex_t *mutex); |
| int pthread_cond_timedwait(pthread_cond_t *cond, |
| pthread_mutex_t * mutex, |
| const struct timespec *abstime); |
| |
| /* BIONIC: same as pthread_cond_timedwait, except the 'abstime' given refers |
| * to the CLOCK_MONOTONIC clock instead, to avoid any problems when |
| * the wall-clock time is changed brutally |
| */ |
| int pthread_cond_timedwait_monotonic_np(pthread_cond_t *cond, |
| pthread_mutex_t *mutex, |
| const struct timespec *abstime); |
| |
| /* BIONIC: DEPRECATED. same as pthread_cond_timedwait_monotonic_np() |
| * unfortunately pthread_cond_timedwait_monotonic has shipped already |
| */ |
| int pthread_cond_timedwait_monotonic(pthread_cond_t *cond, |
| pthread_mutex_t *mutex, |
| const struct timespec *abstime); |
| |
| #define HAVE_PTHREAD_COND_TIMEDWAIT_MONOTONIC 1 |
| |
| /* BIONIC: same as pthread_cond_timedwait, except the 'reltime' given refers |
| * is relative to the current time. |
| */ |
| int pthread_cond_timedwait_relative_np(pthread_cond_t *cond, |
| pthread_mutex_t *mutex, |
| const struct timespec *reltime); |
| |
| #define HAVE_PTHREAD_COND_TIMEDWAIT_RELATIVE 1 |
| |
| |
| |
| int pthread_cond_timeout_np(pthread_cond_t *cond, |
| pthread_mutex_t * mutex, |
| unsigned msecs); |
| |
| /* same as pthread_mutex_lock(), but will wait up to 'msecs' milli-seconds |
| * before returning. same return values than pthread_mutex_trylock though, i.e. |
| * returns EBUSY if the lock could not be acquired after the timeout |
| * expired. |
| */ |
| int pthread_mutex_lock_timeout_np(pthread_mutex_t *mutex, unsigned msecs); |
| |
| /* read-write lock support */ |
| |
| typedef int pthread_rwlockattr_t; |
| |
| typedef struct { |
| pthread_mutex_t lock; |
| pthread_cond_t cond; |
| int numLocks; |
| int writerThreadId; |
| int pendingReaders; |
| int pendingWriters; |
| void* reserved[4]; /* for future extensibility */ |
| } pthread_rwlock_t; |
| |
| #define PTHREAD_RWLOCK_INITIALIZER { PTHREAD_MUTEX_INITIALIZER, PTHREAD_COND_INITIALIZER, 0, 0, 0, 0, { NULL, NULL, NULL, NULL } } |
| |
| int pthread_rwlockattr_init(pthread_rwlockattr_t *attr); |
| int pthread_rwlockattr_destroy(pthread_rwlockattr_t *attr); |
| int pthread_rwlockattr_setpshared(pthread_rwlockattr_t *attr, int pshared); |
| int pthread_rwlockattr_getpshared(pthread_rwlockattr_t *attr, int *pshared); |
| |
| int pthread_rwlock_init(pthread_rwlock_t *rwlock, const pthread_rwlockattr_t *attr); |
| int pthread_rwlock_destroy(pthread_rwlock_t *rwlock); |
| |
| int pthread_rwlock_rdlock(pthread_rwlock_t *rwlock); |
| int pthread_rwlock_tryrdlock(pthread_rwlock_t *rwlock); |
| int pthread_rwlock_timedrdlock(pthread_rwlock_t *rwlock, const struct timespec *abs_timeout); |
| |
| int pthread_rwlock_wrlock(pthread_rwlock_t *rwlock); |
| int pthread_rwlock_trywrlock(pthread_rwlock_t *rwlock); |
| int pthread_rwlock_timedwrlock(pthread_rwlock_t *rwlock, const struct timespec *abs_timeout); |
| |
| int pthread_rwlock_unlock(pthread_rwlock_t *rwlock); |
| |
| |
| int pthread_key_create(pthread_key_t *key, void (*destructor_function)(void *)); |
| int pthread_key_delete (pthread_key_t); |
| int pthread_setspecific(pthread_key_t key, const void *value); |
| void *pthread_getspecific(pthread_key_t key); |
| |
| int pthread_kill(pthread_t tid, int sig); |
| int pthread_sigmask(int how, const sigset_t *set, sigset_t *oset); |
| |
| int pthread_getcpuclockid(pthread_t tid, clockid_t *clockid); |
| |
| int pthread_once(pthread_once_t *once_control, void (*init_routine)(void)); |
| |
| int pthread_setname_np(pthread_t thid, const char *thname); |
| |
| int pthread_atfork(void (*prepare)(void), void (*parent)(void), void(*child)(void)); |
| |
| typedef void (*__pthread_cleanup_func_t)(void*); |
| |
| typedef struct __pthread_cleanup_t { |
| struct __pthread_cleanup_t* __cleanup_prev; |
| __pthread_cleanup_func_t __cleanup_routine; |
| void* __cleanup_arg; |
| } __pthread_cleanup_t; |
| |
| extern void __pthread_cleanup_push(__pthread_cleanup_t* c, |
| __pthread_cleanup_func_t routine, |
| void* arg); |
| |
| extern void __pthread_cleanup_pop(__pthread_cleanup_t* c, |
| int execute); |
| |
| /* Believe or not, the definitions of pthread_cleanup_push and |
| * pthread_cleanup_pop below are correct. Posix states that these |
| * can be implemented as macros that might introduce opening and |
| * closing braces, and that using setjmp/longjmp/return/break/continue |
| * between them results in undefined behaviour. |
| * |
| * And indeed, GLibc and other C libraries use a similar definition |
| */ |
| #define pthread_cleanup_push(routine, arg) \ |
| do { \ |
| __pthread_cleanup_t __cleanup; \ |
| __pthread_cleanup_push( &__cleanup, (routine), (arg) ); \ |
| |
| #define pthread_cleanup_pop(execute) \ |
| __pthread_cleanup_pop( &__cleanup, (execute)); \ |
| } while (0); |
| |
| #ifdef __cplusplus |
| } /* extern "C" */ |
| #endif |
| |
| #endif /* _PTHREAD_H_ */ |