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Side by Side Diff: base/message_pump_glib.h

Issue 3884001: Switch to using TimeTicks rather than Time in message loops (Closed) Base URL: svn://chrome-svn/chrome/trunk/src/
Patch Set: '' Created 10 years, 1 month ago
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1 // Copyright (c) 2008 The Chromium Authors. All rights reserved. 1 // Copyright (c) 2008 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be 2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file. 3 // found in the LICENSE file.
4 4
5 #ifndef BASE_MESSAGE_PUMP_GLIB_H_ 5 #ifndef BASE_MESSAGE_PUMP_GLIB_H_
6 #define BASE_MESSAGE_PUMP_GLIB_H_ 6 #define BASE_MESSAGE_PUMP_GLIB_H_
7 #pragma once 7 #pragma once
8 8
9 #include "base/message_pump.h" 9 #include "base/message_pump.h"
10 #include "base/observer_list.h" 10 #include "base/observer_list.h"
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58 virtual void RunWithDispatcher(Delegate* delegate, Dispatcher* dispatcher); 58 virtual void RunWithDispatcher(Delegate* delegate, Dispatcher* dispatcher);
59 59
60 // Run a single iteration of the mainloop. A return value of true indicates 60 // Run a single iteration of the mainloop. A return value of true indicates
61 // that an event was handled. |block| indicates if it should wait if no event 61 // that an event was handled. |block| indicates if it should wait if no event
62 // is ready for processing. 62 // is ready for processing.
63 virtual bool RunOnce(GMainContext* context, bool block); 63 virtual bool RunOnce(GMainContext* context, bool block);
64 64
65 virtual void Run(Delegate* delegate) { RunWithDispatcher(delegate, NULL); } 65 virtual void Run(Delegate* delegate) { RunWithDispatcher(delegate, NULL); }
66 virtual void Quit(); 66 virtual void Quit();
67 virtual void ScheduleWork(); 67 virtual void ScheduleWork();
68 virtual void ScheduleDelayedWork(const Time& delayed_work_time); 68 virtual void ScheduleDelayedWork(const TimeTicks& delayed_work_time);
69 69
70 // Internal methods used for processing the pump callbacks. They are 70 // Internal methods used for processing the pump callbacks. They are
71 // public for simplicity but should not be used directly. HandlePrepare 71 // public for simplicity but should not be used directly. HandlePrepare
72 // is called during the prepare step of glib, and returns a timeout that 72 // is called during the prepare step of glib, and returns a timeout that
73 // will be passed to the poll. HandleCheck is called after the poll 73 // will be passed to the poll. HandleCheck is called after the poll
74 // has completed, and returns whether or not HandleDispatch should be called. 74 // has completed, and returns whether or not HandleDispatch should be called.
75 // HandleDispatch is called if HandleCheck returned true. 75 // HandleDispatch is called if HandleCheck returned true.
76 int HandlePrepare(); 76 int HandlePrepare();
77 bool HandleCheck(); 77 bool HandleCheck();
78 void HandleDispatch(); 78 void HandleDispatch();
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109 static void EventDispatcher(GdkEvent* event, void* data); 109 static void EventDispatcher(GdkEvent* event, void* data);
110 110
111 RunState* state_; 111 RunState* state_;
112 112
113 // This is a GLib structure that we can add event sources to. We use the 113 // This is a GLib structure that we can add event sources to. We use the
114 // default GLib context, which is the one to which all GTK events are 114 // default GLib context, which is the one to which all GTK events are
115 // dispatched. 115 // dispatched.
116 GMainContext* context_; 116 GMainContext* context_;
117 117
118 // This is the time when we need to do delayed work. 118 // This is the time when we need to do delayed work.
119 Time delayed_work_time_; 119 TimeTicks delayed_work_time_;
120 120
121 // The work source. It is shared by all calls to Run and destroyed when 121 // The work source. It is shared by all calls to Run and destroyed when
122 // the message pump is destroyed. 122 // the message pump is destroyed.
123 GSource* work_source_; 123 GSource* work_source_;
124 124
125 // We use a wakeup pipe to make sure we'll get out of the glib polling phase 125 // We use a wakeup pipe to make sure we'll get out of the glib polling phase
126 // when another thread has scheduled us to do some work. There is a glib 126 // when another thread has scheduled us to do some work. There is a glib
127 // mechanism g_main_context_wakeup, but this won't guarantee that our event's 127 // mechanism g_main_context_wakeup, but this won't guarantee that our event's
128 // Dispatch() will be called. 128 // Dispatch() will be called.
129 int wakeup_pipe_read_; 129 int wakeup_pipe_read_;
130 int wakeup_pipe_write_; 130 int wakeup_pipe_write_;
131 // Use a scoped_ptr to avoid needing the definition of GPollFD in the header. 131 // Use a scoped_ptr to avoid needing the definition of GPollFD in the header.
132 scoped_ptr<GPollFD> wakeup_gpollfd_; 132 scoped_ptr<GPollFD> wakeup_gpollfd_;
133 133
134 // List of observers. 134 // List of observers.
135 ObserverList<Observer> observers_; 135 ObserverList<Observer> observers_;
136 136
137 DISALLOW_COPY_AND_ASSIGN(MessagePumpForUI); 137 DISALLOW_COPY_AND_ASSIGN(MessagePumpForUI);
138 }; 138 };
139 139
140 } // namespace base 140 } // namespace base
141 141
142 #endif // BASE_MESSAGE_PUMP_GLIB_H_ 142 #endif // BASE_MESSAGE_PUMP_GLIB_H_
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