ObjFW  Diff

# define of_thread_is_current(t) (t == GetCurrentThread())
# define of_thread_current GetCurrentThread
#else
# error of_thread_is_current not implemented!
# error of_thread_current not implemented!
#endif

static OF_INLINE bool
of_thread_new(of_thread_t *thread, id (*function)(id), id data)
{
#if defined(OF_HAVE_PTHREADS)
	return (pthread_create(thread, NULL, (void*(*)(void*))function,
	    (__bridge void*)data) == 0);
#elif defined(_WIN32)
	*thread = CreateThread(NULL, 0, (LPTHREAD_START_ROUTINE)function,
	    (__bridge void*)data, 0, NULL);

	return (thread != NULL);
#else
# error of_thread_new not implemented!
#endif
}

static OF_INLINE bool
of_thread_join(of_thread_t thread)
{
#if defined(OF_HAVE_PTHREADS)
	void *ret;

	if (pthread_join(thread, &ret) != 0)
		return false;

# ifdef PTHREAD_CANCELED
	return (ret != PTHREAD_CANCELED);
# else
	return true;
# endif
#elif defined(_WIN32)
	if (WaitForSingleObject(thread, INFINITE))
		return false;

	CloseHandle(thread);

	return true;
#else
# error of_thread_join not implemented!
#endif
}

static OF_INLINE bool
of_thread_detach(of_thread_t thread)
{
#if defined(OF_HAVE_PTHREADS)
	return !pthread_detach(thread);
#elif defined(_WIN32)
	/* FIXME */
	return true;
#else
# error of_thread_detach not implemented!
#endif
}

static OF_INLINE void noreturn
of_thread_exit(void)
{
#if defined(OF_HAVE_PTHREADS)
	pthread_exit(NULL);
#elif defined(_WIN32)
	ExitThread(0);
#else
# error of_thread_exit not implemented!
#endif
	OF_UNREACHABLE
}

static OF_INLINE void
of_once(of_once_t *control, void (*func)(void))
{
#if defined(OF_HAVE_PTHREADS)
	pthread_once(control, func);
#elif defined(_WIN32)
	switch (InterlockedCompareExchange(control, 1, 0)) {
	case 0:
		func();
		InterlockedIncrement(control);
		break;
	case 1:
		while (*control == 1)
			Sleep(0);
		break;
	}
#else
# error of_once not implemented!
#endif
}

static OF_INLINE bool
of_mutex_new(of_mutex_t *mutex)
{
#if defined(OF_HAVE_PTHREADS)
	return !pthread_mutex_init(mutex, NULL);
#elif defined(_WIN32)
	InitializeCriticalSection(mutex);
	return true;
#else
# error of_mutex_new not implemented!
#endif
}

static OF_INLINE bool
of_mutex_free(of_mutex_t *mutex)
{
#if defined(OF_HAVE_PTHREADS)
	return !pthread_mutex_destroy(mutex);
#elif defined(_WIN32)
	DeleteCriticalSection(mutex);
	return true;
#else
# error of_mutex_free not implemented!
#endif
}

static OF_INLINE bool
of_mutex_lock(of_mutex_t *mutex)
{
#if defined(OF_HAVE_PTHREADS)
	return !pthread_mutex_lock(mutex);
#elif defined(_WIN32)
	EnterCriticalSection(mutex);
	return true;
#else
# error of_mutex_lock not implemented!
#endif
}

static OF_INLINE bool
of_mutex_trylock(of_mutex_t *mutex)
{
#if defined(OF_HAVE_PTHREADS)
	return !pthread_mutex_trylock(mutex);
#elif defined(_WIN32)
	return TryEnterCriticalSection(mutex);
#else
# error of_mutex_trylock not implemented!

#endif
}

static OF_INLINE bool
of_mutex_unlock(of_mutex_t *mutex)
{
#if defined(OF_HAVE_PTHREADS)
	return (pthread_mutex_unlock(mutex) == 0);
#elif defined(_WIN32)
	LeaveCriticalSection(mutex);
	return true;
#else
# error of_mutex_unlock not implemented!
#endif
}

static OF_INLINE bool
of_condition_new(of_condition_t *condition)
{
#if defined(OF_HAVE_PTHREADS)
	return (pthread_cond_init(condition, NULL) == 0);
#elif defined(_WIN32)
	condition->count = 0;

	if ((condition->event = CreateEvent(NULL, FALSE, 0, NULL)) == NULL)
		return false;

	return true;
#else
# error of_condition_new not implemented!
#endif
}

static OF_INLINE bool
of_condition_wait(of_condition_t *condition, of_mutex_t *mutex)
{
#if defined(OF_HAVE_PTHREADS)
	return !pthread_cond_wait(condition, mutex);
#elif defined(_WIN32)
	if (!of_mutex_unlock(mutex))
		return false;

	of_atomic_int_inc(&condition->count);

	if (WaitForSingleObject(condition->event, INFINITE) != WAIT_OBJECT_0) {
		of_mutex_lock(mutex);
		return false;
	}

	of_atomic_int_dec(&condition->count);

	if (!of_mutex_lock(mutex))
		return false;

	return true;
#else
# error of_condition_wait not implemented!
#endif
}

static OF_INLINE bool
of_condition_timed_wait(of_condition_t *condition, of_mutex_t *mutex,
    of_time_interval_t timeout)
{
#if defined(OF_HAVE_PTHREADS)
	struct timespec ts;

	ts.tv_sec = (time_t)timeout;
	ts.tv_nsec = lrint((timeout - ts.tv_sec) * 1000000000);

	return !pthread_cond_timedwait(condition, mutex, &ts);
#elif defined(_WIN32)
	if (!of_mutex_unlock(mutex))
		return false;

	of_atomic_int_inc(&condition->count);

	if (WaitForSingleObject(condition->event,
	    timeout * 1000) != WAIT_OBJECT_0) {
		of_mutex_lock(mutex);
		return false;
	}

	of_atomic_int_dec(&condition->count);

	if (!of_mutex_lock(mutex))
		return false;

	return true;
#else
# error of_condition_timed_wait not implemented!
#endif
}

static OF_INLINE bool
of_condition_signal(of_condition_t *condition)
{
#if defined(OF_HAVE_PTHREADS)
	return !pthread_cond_signal(condition);
#elif defined(_WIN32)
	return SetEvent(condition->event);
#else
# error of_condition_signal not implemented!
#endif
}

static OF_INLINE bool
of_condition_broadcast(of_condition_t *condition)
{
#if defined(OF_HAVE_PTHREADS)
	return !pthread_cond_broadcast(condition);
#elif defined(_WIN32)
	int i;

	for (i = 0; i < condition->count; i++)
		if (!SetEvent(condition->event))
			return false;

	return true;
#else
# error of_condition_broadcast not implemented!
#endif
}

static OF_INLINE bool
of_condition_free(of_condition_t *condition)
{
#if defined(OF_HAVE_PTHREADS)
	return !pthread_cond_destroy(condition);
#elif defined(_WIN32)
	if (condition->count)
		return false;

	return CloseHandle(condition->event);
#else
# error of_condition_free not implemented!
#endif
}

static OF_INLINE bool
of_tlskey_new(of_tlskey_t *key)
{
#if defined(OF_HAVE_PTHREADS)
	return !pthread_key_create(key, NULL);
#elif defined(_WIN32)

	return true;
#elif defined(OF_HAVE_PTHREAD_SPINLOCKS)
	return !pthread_spin_destroy(spinlock);
#else
	return of_mutex_free(spinlock);
#endif
}

#ifdef OF_HAVE_RECURSIVE_PTHREAD_MUTEXES
static OF_INLINE bool
of_rmutex_new(of_mutex_t *mutex)
{
	pthread_mutexattr_t attr;

	if (pthread_mutexattr_init(&attr) != 0)
		return false;

	if (pthread_mutexattr_settype(&attr, PTHREAD_MUTEX_RECURSIVE) != 0)
		return false;

	if (pthread_mutex_init(mutex, &attr) != 0)
		return false;

	if (pthread_mutexattr_destroy(&attr) != 0)
		return false;

	return true;
}

# define of_rmutex_lock of_mutex_lock
# define of_rmutex_trylock of_mutex_trylock
# define of_rmutex_unlock of_mutex_unlock
# define of_rmutex_free of_mutex_free
#else
static OF_INLINE bool
of_rmutex_new(of_rmutex_t *rmutex)
{
	if (!of_mutex_new(&rmutex->mutex))
		return false;

	if (!of_tlskey_new(&rmutex->count))
		return false;

	return true;
}

static OF_INLINE bool
of_rmutex_lock(of_rmutex_t *rmutex)
{
	uintptr_t count = (uintptr_t)of_tlskey_get(rmutex->count);

	if (count > 0) {
		if (!of_tlskey_set(rmutex->count, (void*)(count + 1)))
			return false;

		return true;
	}

	if (!of_mutex_lock(&rmutex->mutex))
		return false;

	if (!of_tlskey_set(rmutex->count, (void*)1)) {
		of_mutex_unlock(&rmutex->mutex);
		return false;
	}

	return true;
}

static OF_INLINE bool
of_rmutex_trylock(of_rmutex_t *rmutex)
{
	uintptr_t count = (uintptr_t)of_tlskey_get(rmutex->count);

	if (count > 0) {
		if (!of_tlskey_set(rmutex->count, (void*)(count + 1)))
			return false;

		return true;
	}

	if (!of_mutex_trylock(&rmutex->mutex))
		return false;

	if (!of_tlskey_set(rmutex->count, (void*)1)) {
		of_mutex_unlock(&rmutex->mutex);
		return false;
	}

	return true;
}

static OF_INLINE bool
of_rmutex_unlock(of_rmutex_t *rmutex)
{
	uintptr_t count = (uintptr_t)of_tlskey_get(rmutex->count);

	if (count > 1) {
		if (!of_tlskey_set(rmutex->count, (void*)(count - 1)))
			return false;

		return true;
	}

	if (!of_tlskey_set(rmutex->count, (void*)0))
		return false;

	if (!of_mutex_unlock(&rmutex->mutex))
		return false;

	return true;
}

static OF_INLINE bool
of_rmutex_free(of_rmutex_t *rmutex)
{
	if (!of_mutex_free(&rmutex->mutex))
		return false;

	if (!of_tlskey_free(rmutex->count))
		return false;

	return true;
}
#endif