Index: chrome/browser/hang_monitor/hung_window_detector.h |
diff --git a/chrome/browser/hang_monitor/hung_window_detector.h b/chrome/browser/hang_monitor/hung_window_detector.h |
deleted file mode 100644 |
index 1b8b3c37673d34c694c35d61f2c756063bf4bbb9..0000000000000000000000000000000000000000 |
--- a/chrome/browser/hang_monitor/hung_window_detector.h |
+++ /dev/null |
@@ -1,91 +0,0 @@ |
-// Copyright (c) 2010 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. |
- |
-#ifndef CHROME_BROWSER_HANG_MONITOR_HUNG_WINDOW_DETECTOR_H__ |
-#define CHROME_BROWSER_HANG_MONITOR_HUNG_WINDOW_DETECTOR_H__ |
- |
-#include "base/macros.h" |
-#include "base/synchronization/lock.h" |
-#include "chrome/common/worker_thread_ticker.h" |
- |
-// This class provides the following functionality: |
-// Given a top-level window handle, it enumerates all descendant windows |
-// of that window and, on finding a window that belongs to a different |
-// thread from that of the top-level window, it tests to see if that window |
-// is responding to messages. It does this test by first calling the |
-// IsHungAppWindow API and, additionally (since the IsHungAppWindow API |
-// does not deal correctly with suspended threads), send a dummy message |
-// (WM_NULL) to the window and verifies that the call does not timeout. |
-// This class is typically used in conjunction with the WorkerThreadTicker |
-// class so that the checking can happen on a periodic basis. |
-// If a hung window is detected it calls back the specified implementation of |
-// the HungWindowNotification interface. Currently this class only supports |
-// a single callback but it can be extended later to support multiple |
-// callbacks. |
-class HungWindowDetector : public WorkerThreadTicker::Callback { |
- public: |
- // This property specifies the message timeout for a child window. |
- static const wchar_t kHungChildWindowTimeout[]; |
- // This is the notification callback interface that is used to notify |
- // callers about a non-responsive window |
- class HungWindowNotification { |
- public: |
- enum ActionOnHungWindow { |
- HUNG_WINDOW_IGNORE, |
- HUNG_WINDOW_TERMINATE_PROCESS, |
- }; |
- |
- // This callback method is invoked when a hung window is detected. |
- // A return value of false indicates that we should stop enumerating the |
- // child windows of the browser window to check if they are hung. |
- virtual bool OnHungWindowDetected(HWND hung_window, HWND top_level_window, |
- ActionOnHungWindow* action) = 0; |
- }; |
- |
- // The notification object is not owned by this class. It is assumed that |
- // this pointer will be valid throughout the lifetime of this class. |
- // Ownership of this pointer is not transferred to this class. |
- // Note that the Initialize method needs to be called to initiate monitoring |
- // of hung windows. |
- explicit HungWindowDetector(HungWindowNotification* notification); |
- ~HungWindowDetector() override; |
- |
- // This method initialized the monitoring of hung windows. All descendant |
- // windows of the passed-in top-level window which belong to a thread |
- // different from that of the top-level window are monitored. The |
- // message_response_timeout parameter indicates how long this class must |
- // wait for a window to respond to a sent message before it is considered |
- // to be non-responsive. |
- // Initialize can be called multiple times to change the actual window to |
- // be monitored as well as the message response timeout |
- bool Initialize(HWND top_level_window, |
- int message_response_timeout); |
- |
- // Implementation of the WorkerThreadTicker::Callback interface |
- void OnTick() override; |
- |
- private: |
- // Helper function that checks whether the specified child window is hung. |
- // If so, it invokes the HungWindowNotification interface implementation |
- bool CheckChildWindow(HWND child_window); |
- |
- static BOOL CALLBACK ChildWndEnumProc(HWND child_window, LPARAM param); |
- |
- // Pointer to the HungWindowNotification callback interface. This class does |
- // not RefCount this pointer and it is assumed that the pointer will be valid |
- // throughout the lifetime of this class. |
- HungWindowNotification* notification_; |
- HWND top_level_window_; |
- |
- // How long do we wait before we consider a window hung (in ms) |
- int message_response_timeout_; |
- base::Lock hang_detection_lock_; |
- // Indicates if this object is currently enumerating hung windows |
- bool enumerating_; |
- |
- DISALLOW_COPY_AND_ASSIGN(HungWindowDetector); |
-}; |
- |
- |
-#endif // CHROME_BROWSER_HANG_MONITOR_HUNG_WINDOW_DETECTOR_H__ |