/* * 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 #include #include #include #include /* * 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 poilcy, 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_ */