content/child/webthread_impl.h

   1 // Copyright 2014 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef CONTENT_CHILD_WEBTHREAD_IMPL_H_
   6 #define CONTENT_CHILD_WEBTHREAD_IMPL_H_
   7
   8 #include <map>
   9
  10 #include "base/memory/scoped_ptr.h"
  11 #include "base/threading/thread.h"
  12 #include "content/common/content_export.h"
  13 #include "third_party/WebKit/public/platform/WebThread.h"
  14
  15 namespace content {
  16
  17 class CONTENT_EXPORT WebThreadBase : public blink::WebThread {
  18  public:
  19   virtual ~WebThreadBase();
  20
  21   virtual void addTaskObserver(TaskObserver* observer);
  22   virtual void removeTaskObserver(TaskObserver* observer);
  23
  24   virtual bool isCurrentThread() const = 0;
  25   virtual blink::PlatformThreadId threadId() const = 0;
  26
  27  protected:
  28   WebThreadBase();
  29
  30  private:
  31   class TaskObserverAdapter;
  32
  33   typedef std::map<TaskObserver*, TaskObserverAdapter*> TaskObserverMap;
  34   TaskObserverMap task_observer_map_;
  35 };
  36
  37 class CONTENT_EXPORT WebThreadImpl : public WebThreadBase {
  38  public:
  39   explicit WebThreadImpl(const char* name);
  40   virtual ~WebThreadImpl();
  41
  42   virtual void postTask(Task* task);
  43   virtual void postDelayedTask(Task* task, long long delay_ms);
  44
  45   virtual void enterRunLoop();
  46   virtual void exitRunLoop();
  47
  48   base::MessageLoop* message_loop() const { return thread_->message_loop(); }
  49
  50   virtual bool isCurrentThread() const OVERRIDE;
  51   virtual blink::PlatformThreadId threadId() const OVERRIDE;
  52
  53  private:
  54   scoped_ptr<base::Thread> thread_;
  55 };
  56
  57 class WebThreadImplForMessageLoop : public WebThreadBase {
  58  public:
  59   CONTENT_EXPORT explicit WebThreadImplForMessageLoop(
  60       base::MessageLoopProxy* message_loop);
  61   CONTENT_EXPORT virtual ~WebThreadImplForMessageLoop();
  62
  63   virtual void postTask(Task* task) OVERRIDE;
  64   virtual void postDelayedTask(Task* task, long long delay_ms) OVERRIDE;
  65
  66   virtual void enterRunLoop() OVERRIDE;
  67   virtual void exitRunLoop() OVERRIDE;
  68
  69  private:
  70   virtual bool isCurrentThread() const OVERRIDE;
  71   virtual blink::PlatformThreadId threadId() const OVERRIDE;
  72
  73   scoped_refptr<base::MessageLoopProxy> message_loop_;
  74   blink::PlatformThreadId thread_id_;
  75 };
  76
  77 } // namespace content
  78
  79 #endif  // CONTENT_CHILD_WEBTHREAD_IMPL_H_