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Side by Side Diff: chrome_frame/task_marshaller.h

Issue 126143005: Remove Chrome Frame code and resources. (Closed) Base URL: svn://svn.chromium.org/chrome/trunk/src
Patch Set: sync to r244038 Created 6 years, 11 months ago
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1 // Copyright (c) 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 CHROME_FRAME_TASK_MARSHALLER_H_
6 #define CHROME_FRAME_TASK_MARSHALLER_H_
7
8 #include <windows.h>
9 #include <deque>
10 #include <queue>
11
12 #include "base/callback.h"
13 #include "base/pending_task.h"
14 #include "base/synchronization/lock.h"
15 #include "base/threading/non_thread_safe.h"
16 #include "base/time/time.h"
17
18 class Task;
19
20 namespace tracked_objects {
21 class Location;
22 }
23
24 // TaskMarshallerThroughMessageQueue is similar to base::MessageLoopForUI
25 // in cases where we do not control the thread lifetime and message retrieval
26 // and dispatching. It uses a HWND to ::PostMessage to it as a signal that
27 // the task queue is not empty.
28 class TaskMarshallerThroughMessageQueue : public base::NonThreadSafe {
29 public:
30 TaskMarshallerThroughMessageQueue();
31 virtual ~TaskMarshallerThroughMessageQueue();
32
33 void SetWindow(HWND wnd, UINT msg) {
34 wnd_ = wnd;
35 msg_ = msg;
36 }
37
38 virtual void PostTask(const tracked_objects::Location& from_here,
39 const base::Closure& task);
40 virtual void PostDelayedTask(const tracked_objects::Location& source,
41 const base::Closure& task,
42 base::TimeDelta& delay);
43
44 // Called by the owner of the HWND.
45 BOOL ProcessWindowMessage(HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam,
46 LRESULT& lResult, DWORD dwMsgMapID = 0);
47 private:
48 void ClearTasks();
49 inline base::Closure PopTask();
50 inline void ExecuteQueuedTasks();
51 void ExecuteDelayedTasks();
52
53 // Shortest delays ordered at the top of the queue.
54 base::DelayedTaskQueue delayed_tasks_;
55
56 // A list of tasks that need to be processed by this instance.
57 std::queue<base::Closure> pending_tasks_;
58
59 // Lock accesses to |pending_tasks_|.
60 base::Lock lock_;
61
62 // ::PostMessage parameters.
63 HWND wnd_;
64 UINT msg_;
65 };
66
67 #endif // CHROME_FRAME_TASK_MARSHALLER_H_
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