blob: 0844eb76511c6795ab45278496906a93683e71e2 [file] [log] [blame]
// 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.
#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 {
/// Default constructor. In debug mode, this checks that the object is being
/// created on the main thread.
: ref_(0) {
#ifndef NDEBUG
is_main_thread_ = Module::Get()->core()->IsMainThread();
/// 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_;
int32_t ref_;
#ifndef NDEBUG
bool is_main_thread_;
} // namespace pp