/*
* 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 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);
#if 0 /* MISSING FROM BIONIC */
int pthread_mutex_timedlock(pthread_mutex_t *mutex, struct timespec* ts);
#endif /* MISSING */
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);
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_ */