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Side by Side Diff: base/message_pump_libevent.h

Issue 6081007: Start sorting methods in class declarations. (Closed) Base URL: svn://svn.chromium.org/chrome/trunk/src
Patch Set: nits Created 9 years, 11 months ago
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1 // Copyright (c) 2006-2008 The Chromium Authors. All rights reserved. 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 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_LIBEVENT_H_ 5 #ifndef BASE_MESSAGE_PUMP_LIBEVENT_H_
6 #define BASE_MESSAGE_PUMP_LIBEVENT_H_ 6 #define BASE_MESSAGE_PUMP_LIBEVENT_H_
7 #pragma once 7 #pragma once
8 8
9 #include "base/basictypes.h" 9 #include "base/basictypes.h"
10 #include "base/message_pump.h" 10 #include "base/message_pump.h"
11 #include "base/observer_list.h" 11 #include "base/observer_list.h"
(...skipping 67 matching lines...) Expand 10 before | Expand all | Expand 10 after
79 void OnFileCanWriteWithoutBlocking(int fd, MessagePumpLibevent* pump); 79 void OnFileCanWriteWithoutBlocking(int fd, MessagePumpLibevent* pump);
80 80
81 bool is_persistent_; // false if this event is one-shot. 81 bool is_persistent_; // false if this event is one-shot.
82 event* event_; 82 event* event_;
83 MessagePumpLibevent* pump_; 83 MessagePumpLibevent* pump_;
84 Watcher* watcher_; 84 Watcher* watcher_;
85 85
86 DISALLOW_COPY_AND_ASSIGN(FileDescriptorWatcher); 86 DISALLOW_COPY_AND_ASSIGN(FileDescriptorWatcher);
87 }; 87 };
88 88
89 MessagePumpLibevent();
90 virtual ~MessagePumpLibevent();
91
92 enum Mode { 89 enum Mode {
93 WATCH_READ = 1 << 0, 90 WATCH_READ = 1 << 0,
94 WATCH_WRITE = 1 << 1, 91 WATCH_WRITE = 1 << 1,
95 WATCH_READ_WRITE = WATCH_READ | WATCH_WRITE 92 WATCH_READ_WRITE = WATCH_READ | WATCH_WRITE
96 }; 93 };
97 94
95 MessagePumpLibevent();
96 virtual ~MessagePumpLibevent();
97
98 // Have the current thread's message loop watch for a a situation in which 98 // Have the current thread's message loop watch for a a situation in which
99 // reading/writing to the FD can be performed without blocking. 99 // reading/writing to the FD can be performed without blocking.
100 // Callers must provide a preallocated FileDescriptorWatcher object which 100 // Callers must provide a preallocated FileDescriptorWatcher object which
101 // can later be used to manage the lifetime of this event. 101 // can later be used to manage the lifetime of this event.
102 // If a FileDescriptorWatcher is passed in which is already attached to 102 // If a FileDescriptorWatcher is passed in which is already attached to
103 // an event, then the effect is cumulative i.e. after the call |controller| 103 // an event, then the effect is cumulative i.e. after the call |controller|
104 // will watch both the previous event and the new one. 104 // will watch both the previous event and the new one.
105 // If an error occurs while calling this method in a cumulative fashion, the 105 // If an error occurs while calling this method in a cumulative fashion, the
106 // event previously attached to |controller| is aborted. 106 // event previously attached to |controller| is aborted.
107 // Returns true on success. 107 // Returns true on success.
(...skipping 13 matching lines...) Expand all
121 virtual void ScheduleWork(); 121 virtual void ScheduleWork();
122 virtual void ScheduleDelayedWork(const TimeTicks& delayed_work_time); 122 virtual void ScheduleDelayedWork(const TimeTicks& delayed_work_time);
123 123
124 private: 124 private:
125 void WillProcessIOEvent(); 125 void WillProcessIOEvent();
126 void DidProcessIOEvent(); 126 void DidProcessIOEvent();
127 127
128 // Risky part of constructor. Returns true on success. 128 // Risky part of constructor. Returns true on success.
129 bool Init(); 129 bool Init();
130 130
131 // Called by libevent to tell us a registered FD can be read/written to.
132 static void OnLibeventNotification(int fd, short flags,
133 void* context);
134
135 // Unix pipe used to implement ScheduleWork()
136 // ... callback; called by libevent inside Run() when pipe is ready to read
137 static void OnWakeup(int socket, short flags, void* context);
138
131 // This flag is set to false when Run should return. 139 // This flag is set to false when Run should return.
132 bool keep_running_; 140 bool keep_running_;
133 141
134 // This flag is set when inside Run. 142 // This flag is set when inside Run.
135 bool in_run_; 143 bool in_run_;
136 144
137 // The time at which we should call DoDelayedWork. 145 // The time at which we should call DoDelayedWork.
138 TimeTicks delayed_work_time_; 146 TimeTicks delayed_work_time_;
139 147
140 // Libevent dispatcher. Watches all sockets registered with it, and sends 148 // Libevent dispatcher. Watches all sockets registered with it, and sends
141 // readiness callbacks when a socket is ready for I/O. 149 // readiness callbacks when a socket is ready for I/O.
142 event_base* event_base_; 150 event_base* event_base_;
143 151
144 // Called by libevent to tell us a registered FD can be read/written to.
145 static void OnLibeventNotification(int fd, short flags,
146 void* context);
147
148 // Unix pipe used to implement ScheduleWork()
149 // ... callback; called by libevent inside Run() when pipe is ready to read
150 static void OnWakeup(int socket, short flags, void* context);
151 // ... write end; ScheduleWork() writes a single byte to it 152 // ... write end; ScheduleWork() writes a single byte to it
152 int wakeup_pipe_in_; 153 int wakeup_pipe_in_;
153 // ... read end; OnWakeup reads it and then breaks Run() out of its sleep 154 // ... read end; OnWakeup reads it and then breaks Run() out of its sleep
154 int wakeup_pipe_out_; 155 int wakeup_pipe_out_;
155 // ... libevent wrapper for read end 156 // ... libevent wrapper for read end
156 event* wakeup_event_; 157 event* wakeup_event_;
157 158
158 ObserverList<IOObserver> io_observers_; 159 ObserverList<IOObserver> io_observers_;
159 160
160 DISALLOW_COPY_AND_ASSIGN(MessagePumpLibevent); 161 DISALLOW_COPY_AND_ASSIGN(MessagePumpLibevent);
161 }; 162 };
162 163
163 } // namespace base 164 } // namespace base
164 165
165 #endif // BASE_MESSAGE_PUMP_LIBEVENT_H_ 166 #endif // BASE_MESSAGE_PUMP_LIBEVENT_H_
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