e0b87aa21c
which make it possible to tell the thread name in crash dumps from the call stack. Added a volatile automatic variable to avoid global optimizers optimizing the function. This change would help us to triage ThreadWatcher crashes for IO thread. It would also help in debugging crashes. R=sky, jar Review URL: https://chromiumcodereview.appspot.com/10796079 git-svn-id: svn://svn.chromium.org/chrome/trunk/src@147949 0039d316-1c4b-4281-b951-d872f2087c98
68 lines
2.4 KiB
C++
68 lines
2.4 KiB
C++
// Copyright (c) 2012 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#ifndef CONTENT_BROWSER_BROWSER_THREAD_IMPL_H_
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#define CONTENT_BROWSER_BROWSER_THREAD_IMPL_H_
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#include "base/threading/thread.h"
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#include "content/common/content_export.h"
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#include "content/public/browser/browser_thread.h"
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namespace content {
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class CONTENT_EXPORT BrowserThreadImpl
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: public BrowserThread, public base::Thread {
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public:
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// Construct a BrowserThreadImpl with the supplied identifier. It is an error
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// to construct a BrowserThreadImpl that already exists.
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explicit BrowserThreadImpl(BrowserThread::ID identifier);
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// Special constructor for the main (UI) thread and unittests. We use a dummy
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// thread here since the main thread already exists.
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BrowserThreadImpl(BrowserThread::ID identifier, MessageLoop* message_loop);
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virtual ~BrowserThreadImpl();
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static void ShutdownThreadPool();
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protected:
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virtual void Init() OVERRIDE;
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virtual void Run(MessageLoop* message_loop) OVERRIDE;
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virtual void CleanUp() OVERRIDE;
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private:
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// We implement all the functionality of the public BrowserThread
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// functions, but state is stored in the BrowserThreadImpl to keep
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// the API cleaner. Therefore make BrowserThread a friend class.
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friend class BrowserThread;
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// The following are unique function names that makes it possible to tell
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// the thread id from the callstack alone in crash dumps.
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void UIThreadRun(MessageLoop* message_loop);
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void DBThreadRun(MessageLoop* message_loop);
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void WebKitThreadRun(MessageLoop* message_loop);
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void FileThreadRun(MessageLoop* message_loop);
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void FileUserBlockingThreadRun(MessageLoop* message_loop);
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void ProcessLauncherThreadRun(MessageLoop* message_loop);
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void CacheThreadRun(MessageLoop* message_loop);
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void IOThreadRun(MessageLoop* message_loop);
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static bool PostTaskHelper(
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BrowserThread::ID identifier,
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const tracked_objects::Location& from_here,
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const base::Closure& task,
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base::TimeDelta delay,
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bool nestable);
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// Common initialization code for the constructors.
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void Initialize();
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// The identifier of this thread. Only one thread can exist with a given
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// identifier at a given time.
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ID identifier_;
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};
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} // namespace content
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#endif // CONTENT_BROWSER_BROWSER_THREAD_IMPL_H_
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