Mutex.cpp - mozsearch

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/* This Source Code Form is subject to the terms of the Mozilla Public

 * License, v. 2.0. If a copy of the MPL was not distributed with this

 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

#include "Mutex.h"

#include <errno.h>

#include "mozilla/Assertions.h"

bool Mutex::TryLock() {

#if defined(XP_WIN)

  return !!TryEnterCriticalSection(&mMutex);

#elif defined(XP_DARWIN)

  return os_unfair_lock_trylock(&mMutex);

#else

  switch (pthread_mutex_trylock(&mMutex)) {

    case 0:

      return true;

    case EBUSY:

      return false;

    default:

      MOZ_CRASH("pthread_mutex_trylock error.");

#endif