starboard/shared/win32/mutex_acquire_try.cc

// Copyright 2017 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 <windows.h>

#include "starboard/shared/win32/types_internal.h"

SbMutexResult SbMutexAcquireTry(SbMutex* mutex) {
  if (!mutex) {
    return kSbMutexDestroyed;
  }
  bool result = TryAcquireSRWLockExclusive(SB_WIN32_INTERNAL_MUTEX(mutex));
  return result ? kSbMutexAcquired : kSbMutexBusy;
}