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 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */

 /* vim: set ts=8 sts=2 et sw=2 tw=80: */

 /* 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/. */

 #ifndef LulRWLock_h

 #define LulRWLock_h

 #include "LulPlatformMacros.h"

 #include <pthread.h>

 // This class provides a simple wrapper around reader-writer locks.

 // This is necessary because Android 2.2's libpthread does not

 // provide such functionality, so there has to be a way to provide

 // an alternative with an equivalent interface.

 namespace lul {

 class LulRWLock {

 public:

   LulRWLock();

   ~LulRWLock();

   void WrLock();

   void RdLock();

   void Unlock();

 private:

 #if defined(LUL_OS_android)

   pthread_mutex_t mLock;

 #elif defined(LUL_OS_linux)

   pthread_rwlock_t mLock;

 #else

 # error "Unsupported OS"

 #endif

 };

 } // namespace lul

 #endif // LulRWLock_h