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/*
* Copyright (C) 2015 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#define ATRACE_TAG ATRACE_TAG_GRAPHICS
#define LOG_TAG "hwc-drm-auto-lock"
#include "autolock.h"
#include <errno.h>
#include <pthread.h>
#include <log/log.h>
namespace android {
int AutoLock::Lock() {
if (locked_) {
ALOGE("Invalid attempt to double lock AutoLock %s", name_);
return -EINVAL;
}
int ret = pthread_mutex_lock(mutex_);
if (ret) {
ALOGE("Failed to acquire %s lock %d", name_, ret);
return ret;
}
locked_ = true;
return 0;
}
int AutoLock::Unlock() {
if (!locked_) {
ALOGE("Invalid attempt to unlock unlocked AutoLock %s", name_);
return -EINVAL;
}
int ret = pthread_mutex_unlock(mutex_);
if (ret) {
ALOGE("Failed to release %s lock %d", name_, ret);
return ret;
}
locked_ = false;
return 0;
}
} // namespace android
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