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/* EINA - EFL data type library
* Copyright (C) 2011 Vincent Torri
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library;
* if not, see <http://www.gnu.org/licenses/>.
*/
#ifndef EINA_INLINE_LOCK_POSIX_X_
#define EINA_INLINE_LOCK_POSIX_X_
#ifdef _XOPEN_SOURCE
# define EINA_XOPEN_SOURCE _XOPEN_SOURCE
# undef _XOPEN_SOURCE
#endif
#define _XOPEN_SOURCE 600
#ifdef EINA_HAVE_POSIX_SPINLOCK
# include <sched.h>
#endif
#include <errno.h>
#ifndef __USE_UNIX98
# define __USE_UNIX98
# include <pthread.h>
# undef __USE_UNIX98
#else
# include <pthread.h>
#endif
#ifdef EINA_HAVE_OSX_SPINLOCK
# include <libkern/OSAtomic.h>
#endif
#include <semaphore.h>
#include <sys/time.h>
#include <stdio.h>
#ifdef EINA_HAVE_DEBUG_THREADS
#include <stdlib.h>
#include <string.h>
#include <assert.h>
#include <execinfo.h>
#define EINA_LOCK_DEBUG_BT_NUM 64
typedef void (*Eina_Lock_Bt_Func) ();
#include "eina_inlist.h"
#endif
/* For cond_timedwait */
#include <time.h>
#include <sys/time.h>
typedef struct _Eina_Lock Eina_Lock;
typedef struct _Eina_RWLock Eina_RWLock;
typedef struct _Eina_Condition Eina_Condition;
typedef pthread_key_t Eina_TLS;
#if defined(EINA_HAVE_POSIX_SPINLOCK)
typedef pthread_spinlock_t Eina_Spinlock;
#elif defined(EINA_HAVE_OSX_SPINLOCK)
typedef OSSpinLock Eina_Spinlock;
#else
typedef Eina_Lock Eina_Spinlock;
#endif
#if defined(EINA_HAVE_OSX_SEMAPHORE)
/* OSX supports only named semaphores.
* So, we need to be able to generate a unique string identifier for each
* semaphore we want to create.
* It seems reasonable to use a counter, which is incremented each time a
* semaphore is created. However, it needs to be atomic...
* It would be easier if we were using C11 with stdatomic, but I guess it
* will just be fine without.
* That's why there are two static variables below the struct */
struct _Eina_Semaphore
{
sem_t *sema;
char name[16];
};
typedef struct _Eina_Semaphore Eina_Semaphore;
static unsigned int _sem_ctr = 0;
static Eina_Spinlock _sem_ctr_lock = 0; // 0: not locked
#else
typedef sem_t Eina_Semaphore;
#endif
/** @privatesection @{ */
struct _Eina_Lock
{
#ifdef EINA_HAVE_DEBUG_THREADS
EINA_INLIST; /**< Keeps track of the threads waiting for the lock */
#endif
pthread_mutex_t mutex; /**< The mutex that handles the locking */
#ifdef EINA_HAVE_DEBUG_THREADS
pthread_t lock_thread_id; /**< The ID of the thread that currently has the lock */
Eina_Lock_Bt_Func lock_bt[EINA_LOCK_DEBUG_BT_NUM]; /**< The function that will produce a backtrace on the thread that has the lock */
int lock_bt_num; /**< Number of addresses in the backtrace */
Eina_Bool locked : 1; /**< Indicates locked or not locked */
#endif
};
struct _Eina_Condition
{
Eina_Lock *lock; /**< The lock for this condition */
pthread_cond_t condition; /**< The condition variable */
#if defined(__clockid_t_defined)
clockid_t clkid; /**< The attached clock for timedwait */
#endif
};
struct _Eina_RWLock
{
pthread_rwlock_t mutex; /**< The mutex that handles the locking */
#ifdef EINA_HAVE_DEBUG_THREADS
pthread_t lock_thread_wid; /**< The ID of the thread that currently has the lock */
#endif
};
/** @} privatesection */
EAPI extern Eina_Bool _eina_threads_activated;
#ifdef EINA_HAVE_DEBUG_THREADS
EAPI extern int _eina_threads_debug;
EAPI extern pthread_t _eina_main_loop;
EAPI extern pthread_mutex_t _eina_tracking_lock;
EAPI extern Eina_Inlist *_eina_tracking;
#endif
static inline void
eina_lock_debug(const Eina_Lock *mutex)
{
#ifdef EINA_HAVE_DEBUG_THREADS
printf("lock %p, locked: %i, by %ti\n",
mutex, (int)mutex->locked, (ptrdiff_t)mutex->lock_thread_id);
backtrace_symbols_fd((void **)mutex->lock_bt, mutex->lock_bt_num, 1);
#else
(void) mutex;
#endif
}
static inline Eina_Bool
eina_lock_new(Eina_Lock *mutex)
{
pthread_mutexattr_t attr;
#ifdef EINA_HAVE_DEBUG_THREADS
if (!_eina_threads_activated)
assert(pthread_equal(_eina_main_loop, pthread_self()));
#endif
if (pthread_mutexattr_init(&attr) != 0)
return EINA_FALSE;
/* NOTE: PTHREAD_MUTEX_RECURSIVE is not allowed at all, you will break on/off
feature for sure with that change. */
#ifdef EINA_HAVE_DEBUG_THREADS
if (pthread_mutexattr_settype(&attr, PTHREAD_MUTEX_ERRORCHECK) != 0)
return EINA_FALSE;
memset(mutex, 0, sizeof(Eina_Lock));
#endif
if (pthread_mutex_init(&(mutex->mutex), &attr) != 0)
return EINA_FALSE;
pthread_mutexattr_destroy(&attr);
return EINA_TRUE;
}
static inline void
eina_lock_free(Eina_Lock *mutex)
{
#ifdef EINA_HAVE_DEBUG_THREADS
if (!_eina_threads_activated)
assert(pthread_equal(_eina_main_loop, pthread_self()));
#endif
pthread_mutex_destroy(&(mutex->mutex));
#ifdef EINA_HAVE_DEBUG_THREADS
memset(mutex, 0, sizeof(Eina_Lock));
#endif
}
static inline Eina_Lock_Result
eina_lock_take(Eina_Lock *mutex)
{
Eina_Lock_Result ret = EINA_LOCK_FAIL;
int ok;
#ifdef EINA_HAVE_ON_OFF_THREADS
if (!_eina_threads_activated)
{
#ifdef EINA_HAVE_DEBUG_THREADS
assert(pthread_equal(_eina_main_loop, pthread_self()));
#endif
return EINA_LOCK_SUCCEED;
}
#endif
#ifdef EINA_HAVE_DEBUG_THREADS
if (_eina_threads_debug)
{
struct timeval t0, t1;
int dt;
gettimeofday(&t0, NULL);
ok = pthread_mutex_lock(&(mutex->mutex));
gettimeofday(&t1, NULL);
dt = (t1.tv_sec - t0.tv_sec) * 1000000;
if (t1.tv_usec > t0.tv_usec)
dt += (t1.tv_usec - t0.tv_usec);
else
dt -= t0.tv_usec - t1.tv_usec;
dt /= 1000;
if (dt > _eina_threads_debug) abort();
}
else
{
#endif
ok = pthread_mutex_lock(&(mutex->mutex));
#ifdef EINA_HAVE_DEBUG_THREADS
}
#endif
if (ok == 0) ret = EINA_LOCK_SUCCEED;
else if (ok == EDEADLK)
{
printf("ERROR ERROR: DEADLOCK on lock %p\n", mutex);
eina_lock_debug(mutex);
ret = EINA_LOCK_DEADLOCK; // magic
#ifdef EINA_HAVE_DEBUG_THREADS
if (_eina_threads_debug) abort();
#endif
}
#ifdef EINA_HAVE_DEBUG_THREADS
mutex->locked = 1;
mutex->lock_thread_id = pthread_self();
mutex->lock_bt_num = backtrace((void **)(mutex->lock_bt), EINA_LOCK_DEBUG_BT_NUM);
pthread_mutex_lock(&_eina_tracking_lock);
_eina_tracking = eina_inlist_append(_eina_tracking,
EINA_INLIST_GET(mutex));
pthread_mutex_unlock(&_eina_tracking_lock);
#endif
return ret;
}
static inline Eina_Lock_Result
eina_lock_take_try(Eina_Lock *mutex)
{
Eina_Lock_Result ret = EINA_LOCK_FAIL;
int ok;
#ifdef EINA_HAVE_ON_OFF_THREADS
if (!_eina_threads_activated)
{
#ifdef EINA_HAVE_DEBUG_THREADS
assert(pthread_equal(_eina_main_loop, pthread_self()));
#endif
return EINA_LOCK_SUCCEED;
}
#endif
#ifdef EINA_HAVE_DEBUG_THREADS
if (!_eina_threads_activated)
assert(pthread_equal(_eina_main_loop, pthread_self()));
#endif
ok = pthread_mutex_trylock(&(mutex->mutex));
if (ok == 0) ret = EINA_LOCK_SUCCEED;
else if (ok == EDEADLK)
{
printf("ERROR ERROR: DEADLOCK on trylock %p\n", mutex);
ret = EINA_LOCK_DEADLOCK; // magic
}
#ifdef EINA_HAVE_DEBUG_THREADS
if (ret == EINA_LOCK_SUCCEED)
{
mutex->locked = 1;
mutex->lock_thread_id = pthread_self();
mutex->lock_bt_num = backtrace((void **)(mutex->lock_bt), EINA_LOCK_DEBUG_BT_NUM);
pthread_mutex_lock(&_eina_tracking_lock);
_eina_tracking = eina_inlist_append(_eina_tracking,
EINA_INLIST_GET(mutex));
pthread_mutex_unlock(&_eina_tracking_lock);
}
#endif
return ret;
}
static inline Eina_Lock_Result
eina_lock_release(Eina_Lock *mutex)
{
Eina_Lock_Result ret;
#ifdef EINA_HAVE_ON_OFF_THREADS
if (!_eina_threads_activated)
{
#ifdef EINA_HAVE_DEBUG_THREADS
assert(pthread_equal(_eina_main_loop, pthread_self()));
#endif
return EINA_LOCK_SUCCEED;
}
#endif
#ifdef EINA_HAVE_DEBUG_THREADS
pthread_mutex_lock(&_eina_tracking_lock);
_eina_tracking = eina_inlist_remove(_eina_tracking,
EINA_INLIST_GET(mutex));
pthread_mutex_unlock(&_eina_tracking_lock);
mutex->locked = 0;
mutex->lock_thread_id = 0;
memset(mutex->lock_bt, 0, EINA_LOCK_DEBUG_BT_NUM * sizeof(Eina_Lock_Bt_Func));
mutex->lock_bt_num = 0;
#endif
ret = (pthread_mutex_unlock(&(mutex->mutex)) == 0) ?
EINA_LOCK_SUCCEED : EINA_LOCK_FAIL;
return ret;
}
static inline Eina_Bool
eina_condition_new(Eina_Condition *cond, Eina_Lock *mutex)
{
pthread_condattr_t attr;
#ifdef EINA_HAVE_DEBUG_THREADS
assert(mutex != NULL);
if (!_eina_threads_activated)
assert(pthread_equal(_eina_main_loop, pthread_self()));
memset(cond, 0, sizeof (Eina_Condition));
#endif
cond->lock = mutex;
pthread_condattr_init(&attr);
/* OSX doesn't provide clockid_t or clock_gettime. */
#if defined(__clockid_t_defined)
cond->clkid = (clockid_t) 0;
/* We try here to chose the best clock for cond_timedwait */
# if defined(CLOCK_MONOTONIC_RAW)
if (!pthread_condattr_setclock(&attr, CLOCK_MONOTONIC_RAW))
cond->clkid = CLOCK_MONOTONIC_RAW;
# endif
# if defined(CLOCK_MONOTONIC)
if (!cond->clkid && !pthread_condattr_setclock(&attr, CLOCK_MONOTONIC))
cond->clkid = CLOCK_MONOTONIC;
# endif
# if defined(CLOCK_REALTIME)
if (!cond->clkid && !pthread_condattr_setclock(&attr, CLOCK_REALTIME))
cond->clkid = CLOCK_REALTIME;
# endif
#endif
if (pthread_cond_init(&cond->condition, &attr) != 0)
{
pthread_condattr_destroy(&attr);
#ifdef EINA_HAVE_DEBUG_THREADS
if (errno == EBUSY)
printf("eina_condition_new on already initialized Eina_Condition\n");
#endif
return EINA_FALSE;
}
pthread_condattr_destroy(&attr);
return EINA_TRUE;
}
static inline void
eina_condition_free(Eina_Condition *cond)
{
#ifdef EINA_HAVE_DEBUG_THREADS
if (!_eina_threads_activated)
assert(pthread_equal(_eina_main_loop, pthread_self()));
#endif
pthread_cond_destroy(&(cond->condition));
#ifdef EINA_HAVE_DEBUG_THREADS
memset(cond, 0, sizeof (Eina_Condition));
#endif
}
static inline Eina_Bool
eina_condition_wait(Eina_Condition *cond)
{
Eina_Bool r;
#ifdef EINA_HAVE_DEBUG_THREADS
assert(_eina_threads_activated);
assert(cond->lock != NULL);
pthread_mutex_lock(&_eina_tracking_lock);
_eina_tracking = eina_inlist_remove(_eina_tracking,
EINA_INLIST_GET(cond->lock));
pthread_mutex_unlock(&_eina_tracking_lock);
#endif
r = pthread_cond_wait(&(cond->condition),
&(cond->lock->mutex)) == 0 ? EINA_TRUE : EINA_FALSE;
#ifdef EINA_HAVE_DEBUG_THREADS
pthread_mutex_lock(&_eina_tracking_lock);
_eina_tracking = eina_inlist_append(_eina_tracking,
EINA_INLIST_GET(cond->lock));
pthread_mutex_unlock(&_eina_tracking_lock);
#endif
return r;
}
static inline Eina_Bool
eina_condition_timedwait(Eina_Condition *cond, double t)
{
struct timespec ts;
time_t sec;
long nsec;
int err;
if (t < 0)
{
errno = EINVAL;
return EINA_FALSE;
}
#if defined(__clockid_t_defined)
if (cond->clkid)
{
if (clock_gettime(cond->clkid, &ts) != 0)
return EINA_FALSE;
}
else
#endif
{
/* Obsolete for Linux.
* TODO: use pthread_cond_timedwait_relative_np for OSX. */
struct timeval tv;
if (gettimeofday(&tv, NULL) != 0)
return EINA_FALSE;
ts.tv_sec = tv.tv_sec;
ts.tv_nsec = tv.tv_usec * 1000L;
}
#ifdef EINA_HAVE_DEBUG_THREADS
assert(_eina_threads_activated);
assert(cond->lock != NULL);
pthread_mutex_lock(&_eina_tracking_lock);
_eina_tracking = eina_inlist_remove(_eina_tracking,
EINA_INLIST_GET(cond->lock));
pthread_mutex_unlock(&_eina_tracking_lock);
#endif
sec = (time_t)t;
nsec = (t - (double) sec) * 1000000000L;
ts.tv_sec += sec;
ts.tv_nsec += nsec;
if (ts.tv_nsec > 1000000000L)
{
ts.tv_sec++;
ts.tv_nsec -= 1000000000L;
}
err = pthread_cond_timedwait(&(cond->condition),
&(cond->lock->mutex),
&ts);
#ifdef EINA_HAVE_DEBUG_THREADS
pthread_mutex_lock(&_eina_tracking_lock);
_eina_tracking = eina_inlist_append(_eina_tracking,
EINA_INLIST_GET(cond->lock));
pthread_mutex_unlock(&_eina_tracking_lock);
#endif
return (!err) ? EINA_TRUE : EINA_FALSE;
}
static inline Eina_Bool
eina_condition_broadcast(Eina_Condition *cond)
{
#ifdef EINA_HAVE_DEBUG_THREADS
assert(cond->lock != NULL);
#endif
return pthread_cond_broadcast(&(cond->condition)) == 0 ? EINA_TRUE : EINA_FALSE;
}
static inline Eina_Bool
eina_condition_signal(Eina_Condition *cond)
{
#ifdef EINA_HAVE_DEBUG_THREADS
assert(cond->lock != NULL);
#endif
return pthread_cond_signal(&(cond->condition)) == 0 ? EINA_TRUE : EINA_FALSE;
}
static inline Eina_Bool
eina_rwlock_new(Eina_RWLock *mutex)
{
#ifdef EINA_HAVE_DEBUG_THREADS
if (!_eina_threads_activated)
assert(pthread_equal(_eina_main_loop, pthread_self()));
#endif
if (pthread_rwlock_init(&(mutex->mutex), NULL) != 0)
return EINA_FALSE;
return EINA_TRUE;
}
static inline void
eina_rwlock_free(Eina_RWLock *mutex)
{
#ifdef EINA_HAVE_DEBUG_THREADS
if (!_eina_threads_activated)
assert(pthread_equal(_eina_main_loop, pthread_self()));
#endif
pthread_rwlock_destroy(&(mutex->mutex));
}
static inline Eina_Lock_Result
eina_rwlock_take_read(Eina_RWLock *mutex)
{
#ifdef EINA_HAVE_ON_OFF_THREADS
if (!_eina_threads_activated)
{
#ifdef EINA_HAVE_DEBUG_THREADS
assert(pthread_equal(_eina_main_loop, pthread_self()));
#endif
return EINA_LOCK_SUCCEED;
}
#endif
if (pthread_rwlock_rdlock(&(mutex->mutex)) != 0)
return EINA_LOCK_FAIL;
return EINA_LOCK_SUCCEED;
}
static inline Eina_Lock_Result
eina_rwlock_take_write(Eina_RWLock *mutex)
{
#ifdef EINA_HAVE_ON_OFF_THREADS
if (!_eina_threads_activated)
{
#ifdef EINA_HAVE_DEBUG_THREADS
assert(pthread_equal(_eina_main_loop, pthread_self()));
#endif
return EINA_LOCK_SUCCEED;
}
#endif
if (pthread_rwlock_wrlock(&(mutex->mutex)) != 0)
return EINA_LOCK_FAIL;
return EINA_LOCK_SUCCEED;
}
static inline Eina_Lock_Result
eina_rwlock_release(Eina_RWLock *mutex)
{
#ifdef EINA_HAVE_ON_OFF_THREADS
if (!_eina_threads_activated)
{
#ifdef EINA_HAVE_DEBUG_THREADS
assert(pthread_equal(_eina_main_loop, pthread_self()));
#endif
return EINA_LOCK_SUCCEED;
}
#endif
if (pthread_rwlock_unlock(&(mutex->mutex)) != 0)
return EINA_LOCK_FAIL;
return EINA_LOCK_SUCCEED;
}
static inline Eina_Bool
eina_tls_cb_new(Eina_TLS *key, Eina_TLS_Delete_Cb delete_cb)
{
if (pthread_key_create(key, delete_cb) != 0)
return EINA_FALSE;
return EINA_TRUE;
}
static inline Eina_Bool
eina_tls_new(Eina_TLS *key)
{
return eina_tls_cb_new(key, NULL);
}
static inline void
eina_tls_free(Eina_TLS key)
{
pthread_key_delete(key);
}
static inline void *
eina_tls_get(Eina_TLS key)
{
return pthread_getspecific(key);
}
static inline Eina_Bool
eina_tls_set(Eina_TLS key, const void *data)
{
if (pthread_setspecific(key, data) != 0)
return EINA_FALSE;
return EINA_TRUE;
}
#ifdef EINA_HAVE_PTHREAD_BARRIER
typedef struct _Eina_Barrier Eina_Barrier;
struct _Eina_Barrier
{
pthread_barrier_t barrier;
};
static inline Eina_Bool
eina_barrier_new(Eina_Barrier *barrier, int needed)
{
if (!pthread_barrier_init(&(barrier->barrier), NULL, needed))
return EINA_TRUE;
return EINA_FALSE;
}
static inline void
eina_barrier_free(Eina_Barrier *barrier)
{
pthread_barrier_destroy(&(barrier->barrier));
}
static inline Eina_Bool
eina_barrier_wait(Eina_Barrier *barrier)
{
pthread_barrier_wait(&(barrier->barrier));
return EINA_TRUE;
}
#else
#include "eina_inline_lock_barrier.x"
#endif
static inline Eina_Bool
eina_spinlock_new(Eina_Spinlock *spinlock)
{
#if defined(EINA_HAVE_POSIX_SPINLOCK)
return pthread_spin_init(spinlock, PTHREAD_PROCESS_PRIVATE) == 0 ? EINA_TRUE : EINA_FALSE;
#elif defined(EINA_HAVE_OSX_SPINLOCK)
/* OSSpinLock is an integer type. The convention is that unlocked is
* zero, and locked is nonzero. */
*spinlock = 0;
return EINA_LOCK_SUCCEED;
#else
return eina_lock_new(spinlock);
#endif
}
static inline Eina_Lock_Result
eina_spinlock_take(Eina_Spinlock *spinlock)
{
#if defined(EINA_HAVE_POSIX_SPINLOCK)
int t;
do {
t = pthread_spin_trylock(spinlock);
if (t != 0)
{
if (errno == EBUSY) sched_yield();
else if (errno == EDEADLK) return EINA_LOCK_DEADLOCK;
}
} while (t != 0);
return EINA_LOCK_SUCCEED;
#elif defined(EINA_HAVE_OSX_SPINLOCK)
/* void OSSpinLockLock(OSSpinLock *lock);
* Will spin if the lock is already held, but employs various strategies to
* back off, making it immune to most priority-inversion livelocks. */
OSSpinLockLock(spinlock);
return EINA_LOCK_SUCCEED;
#else
return eina_lock_take(spinlock);
#endif
}
static inline Eina_Lock_Result
eina_spinlock_take_try(Eina_Spinlock *spinlock)
{
#if defined(EINA_HAVE_POSIX_SPINLOCK)
int t;
t = pthread_spin_trylock(spinlock);
return t ? EINA_LOCK_FAIL : EINA_LOCK_SUCCEED;
#elif defined(EINA_HAVE_OSX_SPINLOCK)
/* bool OSSpinLockTry(OSSpinLock *lock);
* Immediately returns false if the lock was held, true if it took the
* lock. It does not spin. */
return (OSSpinLockTry(spinlock)) ? EINA_LOCK_SUCCEED : EINA_LOCK_FAIL;
#else
return eina_lock_take_try(spinlock);
#endif
}
static inline Eina_Lock_Result
eina_spinlock_release(Eina_Spinlock *spinlock)
{
#if defined(EINA_HAVE_POSIX_SPINLOCK)
return pthread_spin_unlock(spinlock) ? EINA_LOCK_FAIL : EINA_LOCK_SUCCEED;
#elif defined(EINA_HAVE_OSX_SPINLOCK)
/* void OSSpinLockUnlock(OSSpinLock *lock);
* Unconditionally unlocks the lock by zeroing it. */
OSSpinLockUnlock(spinlock);
return EINA_LOCK_SUCCEED;
#else
return eina_lock_release(spinlock);
#endif
}
static inline void
eina_spinlock_free(Eina_Spinlock *spinlock)
{
#if defined(EINA_HAVE_POSIX_SPINLOCK)
pthread_spin_destroy(spinlock);
#elif defined(EINA_HAVE_OSX_SPINLOCK)
/* Not applicable */
(void) spinlock;
#else
eina_lock_free(spinlock);
#endif
}
static inline Eina_Bool
eina_semaphore_new(Eina_Semaphore *sem, int count_init)
{
if (!sem || (count_init < 0))
return EINA_FALSE;
#if defined(EINA_HAVE_OSX_SEMAPHORE)
/* Atomic increment to generate the unique identifier */
eina_spinlock_take(&_sem_ctr_lock);
++_sem_ctr;
eina_spinlock_release(&_sem_ctr_lock);
snprintf(sem->name, sizeof(sem->name), "/eina_sem_%u", _sem_ctr);
sem_unlink(sem->name);
sem->sema = sem_open(sem->name, O_CREAT, 0644, count_init);
return (sem->sema == SEM_FAILED) ? EINA_FALSE : EINA_TRUE;
#else
return (sem_init(sem, 1, count_init) == 0) ? EINA_TRUE : EINA_FALSE;
#endif
}
static inline Eina_Bool
eina_semaphore_free(Eina_Semaphore *sem)
{
if (!sem)
return EINA_FALSE;
#if defined(EINA_HAVE_OSX_SEMAPHORE)
return ((sem_close(sem->sema) == 0) &&
(sem_unlink(sem->name)) == 0) ? EINA_TRUE : EINA_FALSE;
#else
return (sem_destroy(sem) == 0) ? EINA_TRUE : EINA_FALSE;
#endif
}
static inline Eina_Bool
eina_semaphore_lock(Eina_Semaphore *sem)
{
if (!sem)
return EINA_FALSE;
#if defined(EINA_HAVE_OSX_SEMAPHORE)
return (sem_wait(sem->sema) == 0) ? EINA_TRUE : EINA_FALSE;
#else
return (sem_wait(sem) == 0) ? EINA_TRUE : EINA_FALSE;
#endif
}
static inline Eina_Bool
eina_semaphore_release(Eina_Semaphore *sem, int count_release EINA_UNUSED)
{
if (!sem)
return EINA_FALSE;
#if defined(EINA_HAVE_OSX_SEMAPHORE)
return (sem_post(sem->sema) == 0) ? EINA_TRUE : EINA_FALSE;
#else
return (sem_post(sem) == 0) ? EINA_TRUE : EINA_FALSE;
#endif
}
#undef _XOPEN_SOURCE
// This is necessary to let third party still define this macro
#ifdef EINA_XOPEN_SOURCE
# define _XOPEN_SOURCE EINA_XOPEN_SOURCE
#endif
#ifdef EINA_HAVE_OSX_SPINLOCK
/* The inclusion of libkern/OSAtomic.h is a mess because it includes stdbool
* which #defines bool. #undef bool is not sufficient because then other
* headers (dlfcn.h) require it and #include stdbool.h to get it. It is
* therefore important to "undo" the whole stdbool.h inclusion. */
# undef true
# undef false
# undef bool
# undef __bool_true_false_are_defined
# undef _STDBOOL_H_ // OSX SDK
# undef __STDBOOL_H // Clang 5.1
# undef _STDBOOL_H // GCC
#endif
#endif
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