src/cobalt/renderer/rasterizer/skia/skia/src/ports/SkMutex_cobalt.h

/*
 * Copyright 2013 Google Inc.
 *
 * Use of this source code is governed by a BSD-style license that can be
 * found in the LICENSE file.
 */

#ifndef COBALT_RENDERER_RASTERIZER_SKIA_SKIA_SRC_PORTS_SKMUTEX_COBALT_H_
#define COBALT_RENDERER_RASTERIZER_SKIA_SKIA_SRC_PORTS_SKMUTEX_COBALT_H_

#include "base/synchronization/lock.h"

// In Cobalt, like Windows, SkBaseMutex and SkMutex are the same thing,
// because there is no design allowing us to get rid of static initializers.
// We preserve the same inheritance pattern as other Skia platforms
// so that we can forward-declare cleanly.
class SkBaseMutex {
 public:
  SkBaseMutex() {}

  void acquire() { lock_.Acquire(); }

  void release() { lock_.Release(); }

  void assertHeld() { lock_.AssertAcquired(); }

 private:
  SkBaseMutex(const SkBaseMutex&);
  SkBaseMutex& operator=(const SkBaseMutex&);

  base::Lock lock_;
};

class SkMutex : public SkBaseMutex {};

// On Cobalt we provide no means of POD initializing a mutex.
// As a result, it is illegal to SK_DECLARE_STATIC_MUTEX in a function.
#define SK_DECLARE_STATIC_MUTEX(name) \
  namespace {}                        \
  static SkBaseMutex name  // NOLINT(build/namespaces)

#endif  // COBALT_RENDERER_RASTERIZER_SKIA_SKIA_SRC_PORTS_SKMUTEX_COBALT_H_