ObjFW  Diff

 * file.
 */

#include "config.h"

#include <errno.h>

#import "condition.h"
#import "OFPlainCondition.h"

#include <windows.h>

int
of_condition_new(of_condition_t *condition)
OFPlainConditionNew(OFPlainCondition *condition)
{
	condition->count = 0;

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

	return 0;
}

int
of_condition_signal(of_condition_t *condition)
OFPlainConditionSignal(OFPlainCondition *condition)
{
	if (!SetEvent(condition->event)) {
		switch (GetLastError()) {
		case ERROR_INVALID_HANDLE:
			return EINVAL;
		default:
			OF_ENSURE(0);
			OFEnsure(0);
		}
	}

	return 0;
}

int
of_condition_broadcast(of_condition_t *condition)
OFPlainConditionBroadcast(OFPlainCondition *condition)
{
	int count = condition->count;

	for (int i = 0; i < count; i++) {
		if (!SetEvent(condition->event)) {
			switch (GetLastError()) {
			case ERROR_INVALID_HANDLE:
				return EINVAL;
			default:
				OF_ENSURE(0);
				OFEnsure(0);
			}
		}
	}

	return 0;
}

int
of_condition_wait(of_condition_t *condition, of_mutex_t *mutex)
OFPlainConditionWait(OFPlainCondition *condition, OFPlainMutex *mutex)
{
	int error;
	DWORD status;

	if ((error = of_mutex_unlock(mutex)) != 0)
	if ((error = OFPlainMutexUnlock(mutex)) != 0)
		return error;

	of_atomic_int_inc(&condition->count);
	OFAtomicIntIncrease(&condition->count);
	status = WaitForSingleObject(condition->event, INFINITE);
	of_atomic_int_dec(&condition->count);
	OFAtomicIntDecrease(&condition->count);

	switch (status) {
	case WAIT_OBJECT_0:
		return of_mutex_lock(mutex);
		return OFPlainMutexLock(mutex);
	case WAIT_FAILED:
		switch (GetLastError()) {
		case ERROR_INVALID_HANDLE:
			return EINVAL;
		default:
			OF_ENSURE(0);
			OFEnsure(0);
		}
	default:
		OF_ENSURE(0);
		OFEnsure(0);
	}
}

int
of_condition_timed_wait(of_condition_t *condition, of_mutex_t *mutex,
    of_time_interval_t timeout)
OFPlainConditionTimedWait(OFPlainCondition *condition, OFPlainMutex *mutex,
    OFTimeInterval timeout)
{
	int error;
	DWORD status;

	if ((error = of_mutex_unlock(mutex)) != 0)
	if ((error = OFPlainMutexUnlock(mutex)) != 0)
		return error;

	of_atomic_int_inc(&condition->count);
	OFAtomicIntIncrease(&condition->count);
	status = WaitForSingleObject(condition->event, timeout * 1000);
	of_atomic_int_dec(&condition->count);
	OFAtomicIntDecrease(&condition->count);

	switch (status) {
	case WAIT_OBJECT_0:
		return of_mutex_lock(mutex);
		return OFPlainMutexLock(mutex);
	case WAIT_TIMEOUT:
		return ETIMEDOUT;
	case WAIT_FAILED:
		switch (GetLastError()) {
		case ERROR_INVALID_HANDLE:
			return EINVAL;
		default:
			OF_ENSURE(0);
			OFEnsure(0);
		}
	default:
		OF_ENSURE(0);
		OFEnsure(0);
	}
}

int
of_condition_free(of_condition_t *condition)
OFPlainConditionFree(OFPlainCondition *condition)
{
	if (condition->count != 0)
		return EBUSY;

	return (CloseHandle(condition->event) ? 0 : EINVAL);
}