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1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2012 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 CHROME_BROWSER_PROCESS_SINGLETON_H_ | 5 #ifndef CHROME_BROWSER_PROCESS_SINGLETON_H_ |
6 #define CHROME_BROWSER_PROCESS_SINGLETON_H_ | 6 #define CHROME_BROWSER_PROCESS_SINGLETON_H_ |
7 | 7 |
8 #include "build/build_config.h" | 8 #include "build/build_config.h" |
9 | 9 |
10 #if defined(OS_WIN) | 10 #if defined(OS_WIN) |
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60 // Chrome process was launched. Return true if the command line will be | 60 // Chrome process was launched. Return true if the command line will be |
61 // handled within the current browser instance or false if the remote process | 61 // handled within the current browser instance or false if the remote process |
62 // should handle it (i.e., because the current process is shutting down). | 62 // should handle it (i.e., because the current process is shutting down). |
63 typedef base::Callback< | 63 typedef base::Callback< |
64 bool(const CommandLine& command_line, const FilePath& current_directory)> | 64 bool(const CommandLine& command_line, const FilePath& current_directory)> |
65 NotificationCallback; | 65 NotificationCallback; |
66 | 66 |
67 explicit ProcessSingleton(const FilePath& user_data_dir); | 67 explicit ProcessSingleton(const FilePath& user_data_dir); |
68 ~ProcessSingleton(); | 68 ~ProcessSingleton(); |
69 | 69 |
70 // Notify another process, if available. | |
71 // Returns true if another process was found and notified, false if we | |
72 // should continue with this process. | |
73 // Windows code roughly based on Mozilla. | |
74 // | |
75 // TODO(brettw): this will not handle all cases. If two process start up too | |
76 // close to each other, the Create() might not yet have happened for the | |
77 // first one, so this function won't find it. | |
78 NotifyResult NotifyOtherProcess(); | |
79 | |
80 // Notify another process, if available. Otherwise sets ourselves as the | 70 // Notify another process, if available. Otherwise sets ourselves as the |
81 // singleton instance and stores the provided callback for notification from | 71 // singleton instance and stores the provided callback for notification from |
82 // future processes. Returns PROCESS_NONE if we became the singleton | 72 // future processes. Returns PROCESS_NONE if we became the singleton |
83 // instance. | 73 // instance. |
84 NotifyResult NotifyOtherProcessOrCreate( | 74 NotifyResult NotifyOtherProcessOrCreate( |
85 const NotificationCallback& notification_callback); | 75 const NotificationCallback& notification_callback); |
86 | 76 |
87 #if defined(OS_LINUX) || defined(OS_OPENBSD) | |
88 // Exposed for testing. We use a timeout on Linux, and in tests we want | |
89 // this timeout to be short. | |
90 NotifyResult NotifyOtherProcessWithTimeout(const CommandLine& command_line, | |
91 int timeout_seconds, | |
92 bool kill_unresponsive); | |
93 NotifyResult NotifyOtherProcessWithTimeoutOrCreate( | |
94 const CommandLine& command_line, | |
95 const NotificationCallback& notification_callback, | |
96 int timeout_seconds); | |
97 void OverrideCurrentPidForTesting(base::ProcessId pid); | |
98 void OverrideKillCallbackForTesting(const base::Callback<void(int)>& callback) ; | |
99 static void DisablePromptForTesting(); | |
100 #endif // defined(OS_LINUX) || defined(OS_OPENBSD) | |
101 | |
102 // Sets ourself up as the singleton instance. Returns true on success. If | |
103 // false is returned, we are not the singleton instance and the caller must | |
104 // exit. Otherwise, stores the provided callback for notification from | |
105 // future processes. | |
106 bool Create( | |
107 const NotificationCallback& notification_callback); | |
108 | |
109 // Clear any lock state during shutdown. | 77 // Clear any lock state during shutdown. |
110 void Cleanup(); | 78 void Cleanup(); |
111 | 79 |
112 // Blocks the dispatch of CopyData messages. foreground_window refers | 80 // Blocks the dispatch of CopyData messages. foreground_window refers |
113 // to the window that should be set to the foreground if a CopyData message | 81 // to the window that should be set to the foreground if a CopyData message |
114 // is received while the ProcessSingleton is locked. | 82 // is received while the ProcessSingleton is locked. |
115 void Lock(gfx::NativeWindow foreground_window) { | 83 void Lock(gfx::NativeWindow foreground_window) { |
116 DCHECK(CalledOnValidThread()); | 84 DCHECK(CalledOnValidThread()); |
117 locked_ = true; | 85 locked_ = true; |
118 foreground_window_ = foreground_window; | 86 foreground_window_ = foreground_window; |
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130 | 98 |
131 bool locked() { | 99 bool locked() { |
132 DCHECK(CalledOnValidThread()); | 100 DCHECK(CalledOnValidThread()); |
133 return locked_; | 101 return locked_; |
134 } | 102 } |
135 | 103 |
136 #if defined(OS_WIN) | 104 #if defined(OS_WIN) |
137 LRESULT WndProc(HWND hwnd, UINT message, WPARAM wparam, LPARAM lparam); | 105 LRESULT WndProc(HWND hwnd, UINT message, WPARAM wparam, LPARAM lparam); |
138 #endif | 106 #endif |
139 | 107 |
108 #if defined(OS_LINUX) || defined(OS_OPENBSD) | |
109 static void DisablePromptForTesting(); | |
110 #endif // defined(OS_LINUX) || defined(OS_OPENBSD) | |
111 | |
112 protected: | |
113 // Notify another process, if available. | |
114 // Returns true if another process was found and notified, false if we | |
115 // should continue with this process. | |
116 // Windows code roughly based on Mozilla. | |
117 // | |
118 // TODO(brettw): this will not handle all cases. If two process start up too | |
robertshield
2012/11/30 21:21:52
nit: processes
gab
2012/11/30 21:35:36
Done.
| |
119 // close to each other, the Create() might not yet have happened for the | |
120 // first one, so this function won't find it. | |
121 virtual NotifyResult NotifyOtherProcess(); | |
122 | |
123 // Sets ourself up as the singleton instance. Returns true on success. If | |
124 // false is returned, we are not the singleton instance and the caller must | |
125 // exit. Otherwise, stores the provided callback for notification from | |
126 // future processes. | |
127 virtual bool Create( | |
128 const NotificationCallback& notification_callback); | |
129 | |
130 #if defined(OS_LINUX) || defined(OS_OPENBSD) | |
131 // Exposed for testing. We use a timeout on Linux, and in tests we want | |
132 // this timeout to be short. | |
133 virtual NotifyResult NotifyOtherProcessWithTimeout( | |
134 const CommandLine& command_line, | |
135 int timeout_seconds, | |
136 bool kill_unresponsive); | |
137 virtual NotifyResult NotifyOtherProcessWithTimeoutOrCreate( | |
138 const CommandLine& command_line, | |
139 const NotificationCallback& notification_callback, | |
140 int timeout_seconds); | |
141 virtual void OverrideCurrentPidForTesting(base::ProcessId pid); | |
142 virtual void OverrideKillCallbackForTesting( | |
143 const base::Callback<void(int)>& callback); | |
144 #endif // defined(OS_LINUX) || defined(OS_OPENBSD) | |
145 | |
140 private: | 146 private: |
141 typedef std::pair<CommandLine::StringVector, FilePath> DelayedStartupMessage; | 147 typedef std::pair<CommandLine::StringVector, FilePath> DelayedStartupMessage; |
142 | 148 |
143 #if !defined(OS_MACOSX) | 149 #if !defined(OS_MACOSX) |
144 // Timeout for the current browser process to respond. 20 seconds should be | 150 // Timeout for the current browser process to respond. 20 seconds should be |
145 // enough. It's only used in Windows and Linux implementations. | 151 // enough. It's only used in Windows and Linux implementations. |
146 static const int kTimeoutInSeconds = 20; | 152 static const int kTimeoutInSeconds = 20; |
147 #endif | 153 #endif |
148 | 154 |
149 bool locked_; | 155 bool locked_; |
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210 #endif | 216 #endif |
211 | 217 |
212 // If messages are received in the locked state, the corresponding command | 218 // If messages are received in the locked state, the corresponding command |
213 // lines are saved here to be replayed later. | 219 // lines are saved here to be replayed later. |
214 std::vector<DelayedStartupMessage> saved_startup_messages_; | 220 std::vector<DelayedStartupMessage> saved_startup_messages_; |
215 | 221 |
216 DISALLOW_COPY_AND_ASSIGN(ProcessSingleton); | 222 DISALLOW_COPY_AND_ASSIGN(ProcessSingleton); |
217 }; | 223 }; |
218 | 224 |
219 #endif // CHROME_BROWSER_PROCESS_SINGLETON_H_ | 225 #endif // CHROME_BROWSER_PROCESS_SINGLETON_H_ |
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