Render/pepper hang debugging: generate dumps for the browser and renderer processes if users kill a…

ppapi/shared_impl/ppapi_message_tracker.cc

-// Copyright (c) 2012 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/shared_impl/ppapi_message_tracker.h"
-
-#include "base/logging.h"
-#include "base/memory/singleton.h"
-
-namespace ppapi {
-
-//static
-PpapiMessageTracker* PpapiMessageTracker::GetInstance() {
-  return Singleton<PpapiMessageTracker>::get();
-}
-
-PpapiMessageTracker::PpapiMessageTracker() : enter_count_(0) {
-}
-
-PpapiMessageTracker::~PpapiMessageTracker() {
-}
-
-void PpapiMessageTracker::EnterMessageHandling() {
-  base::AutoLock auto_lock(lock_);
-  enter_count_++;
-}
-
-void PpapiMessageTracker::ExitMessageHandling() {
-  base::AutoLock auto_lock(lock_);
-  DCHECK_GT(enter_count_, 0);
-  enter_count_--;
-}
-
-bool PpapiMessageTracker::IsHandlingMessage() {
-  base::AutoLock auto_lock(lock_);
-  return enter_count_ > 0;
-}
-
-ScopedTrackPpapiMessage::ScopedTrackPpapiMessage() {
-  PpapiMessageTracker::GetInstance()->EnterMessageHandling();
-}
-
-ScopedTrackPpapiMessage::~ScopedTrackPpapiMessage() {
-  PpapiMessageTracker::GetInstance()->ExitMessageHandling();
-}
-
-}  // namespace ppapi