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// Copyright 2015 The Cobalt Authors. All Rights Reserved.
//
// 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.
#include "starboard/mutex.h"
#include <pthread.h>
#include "starboard/common/experimental/concurrency_debug.h"
#include "starboard/shared/pthread/is_success.h"
#include "starboard/shared/pthread/types_internal.h"
#include "starboard/shared/starboard/lazy_initialization_internal.h"
using starboard::shared::starboard::EnsureInitialized;
using starboard::shared::starboard::SetInitialized;
SbMutexResult SbMutexAcquire(SbMutex* mutex) {
if (!mutex) {
return kSbMutexDestroyed;
}
if (!EnsureInitialized(&(SB_INTERNAL_MUTEX(mutex)->initialized_state))) {
*SB_PTHREAD_INTERNAL_MUTEX(mutex) = PTHREAD_MUTEX_INITIALIZER;
SetInitialized(&(SB_INTERNAL_MUTEX(mutex)->initialized_state));
}
#if SB_ENABLE_CONCURRENCY_DEBUG
starboard::experimental::ScopedMutexWaitTracker tracker(mutex);
if (tracker.acquired()) {
return kSbMutexAcquired;
}
#endif // SB_ENABLE_CONCURRENCY_DEBUG
int result = pthread_mutex_lock(SB_PTHREAD_INTERNAL_MUTEX(mutex));
if (IsSuccess(result)) {
return kSbMutexAcquired;
}
return kSbMutexBusy;
}