gcl change rev

ppapi/cpp/non_thread_safe_ref_count.h

-// Copyright (c) 2011 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#ifndef PPAPI_CPP_NON_THREAD_SAFE_REF_COUNT_H_
-#define PPAPI_CPP_NON_THREAD_SAFE_REF_COUNT_H_
-
-#include "ppapi/cpp/core.h"
-#include "ppapi/cpp/logging.h"
-#include "ppapi/cpp/module.h"
-
-/// @file
-/// This file defines the APIs for maintaining a reference counter.
-namespace pp {
-
-/// A simple reference counter that is not thread-safe. <strong>Note:</strong>
-/// in Debug mode, it checks that it is either called on the main thread, or
-/// always called on another thread.
-class NonThreadSafeRefCount {
- public:
-  /// Default constructor. In debug mode, this checks that the object is being
-  /// created on the main thread.
-  NonThreadSafeRefCount()
-      : ref_(0) {
-#ifndef NDEBUG
-    is_main_thread_ = Module::Get()->core()->IsMainThread();
-#endif
-  }
-
-  /// Destructor.
-  ~NonThreadSafeRefCount() {
-    PP_DCHECK(is_main_thread_ == Module::Get()->core()->IsMainThread());
-  }
-
-  /// AddRef() increments the reference counter.
-  ///
-  /// @return An int32_t with the incremented reference counter.
-  int32_t AddRef() {
-    PP_DCHECK(is_main_thread_ == Module::Get()->core()->IsMainThread());
-    return ++ref_;
-  }
-
-  /// Release() decrements the reference counter.
-  ///
-  /// @return An int32_t with the decremeneted reference counter.
-  int32_t Release() {
-    PP_DCHECK(is_main_thread_ == Module::Get()->core()->IsMainThread());
-    return --ref_;
-  }
-
- private:
-  int32_t ref_;
-#ifndef NDEBUG
-  bool is_main_thread_;
-#endif
-};
-
-}  // namespace pp
-
-#endif  // PPAPI_CPP_NON_THREAD_SAFE_REF_COUNT_H_