src/starboard/shared/pthread/mutex_acquire.cc

// 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/common/mutex.h"

#include <pthread.h>

#include "starboard/common/experimental/concurrency_debug.h"
#include "starboard/shared/pthread/is_success.h"

SbMutexResult SbMutexAcquire(SbMutex* mutex) {
  if (!mutex) {
    return kSbMutexDestroyed;
  }

#if SB_ENABLE_CONCURRENTY_DEBUG
  starboard::experimental::ScopedMutexWaitTracker tracker(mutex);
  if (tracker.acquired()) {
    return kSbMutexAcquired;
  }
#endif  // SB_ENABLE_CONCURRENTY_DEBUG

  int result = pthread_mutex_lock(mutex);
  if (IsSuccess(result)) {
    return kSbMutexAcquired;
  }

  return kSbMutexBusy;
}