cc/CCThread.h

   1 // Copyright 2011 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 CCThread_h
   6 #define CCThread_h
   7
   8 #include <wtf/PassOwnPtr.h>
   9 #include <wtf/Threading.h>
  10
  11 namespace WebCore {
  12
  13 // CCThread provides basic infrastructure for messaging with the compositor in a
  14 // platform-neutral way.
  15 class CCThread {
  16 public:
  17     virtual ~CCThread() { }
  18
  19     class Task {
  20         WTF_MAKE_NONCOPYABLE(Task);
  21     public:
  22         virtual ~Task() { }
  23         virtual void performTask() = 0;
  24         void* instance() const { return m_instance; }
  25     protected:
  26         Task(void* instance) : m_instance(instance) { }
  27         void* m_instance;
  28     };
  29
  30     // Executes the task on context's thread asynchronously.
  31     virtual void postTask(PassOwnPtr<Task>) = 0;
  32
  33     // Executes the task after the specified delay.
  34     virtual void postDelayedTask(PassOwnPtr<Task>, long long delayMs) = 0;
  35
  36     virtual WTF::ThreadIdentifier threadID() const = 0;
  37 };
  38
  39 }
  40
  41 #endif