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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) |
11 #include <windows.h> | 11 #include <windows.h> |
12 #endif // defined(OS_WIN) | 12 #endif // defined(OS_WIN) |
13 | 13 |
14 #include <set> | 14 #include <set> |
15 #include <vector> | 15 #include <vector> |
16 | 16 |
17 #include "base/basictypes.h" | 17 #include "base/basictypes.h" |
18 #include "base/callback.h" | 18 #include "base/callback.h" |
19 #include "base/command_line.h" | 19 #include "base/command_line.h" |
20 #include "base/files/file_path.h" | 20 #include "base/files/file_path.h" |
21 #include "base/logging.h" | 21 #include "base/logging.h" |
22 #include "base/memory/ref_counted.h" | 22 #include "base/memory/ref_counted.h" |
23 #include "base/process/process.h" | 23 #include "base/process/process.h" |
24 #include "base/threading/non_thread_safe.h" | 24 #include "base/threading/non_thread_safe.h" |
25 #include "ui/gfx/native_widget_types.h" | 25 #include "ui/gfx/native_widget_types.h" |
26 | 26 |
27 #if defined(OS_LINUX) || defined(OS_OPENBSD) | 27 #if defined(OS_POSIX) && !defined(OS_MACOSX) && !defined(OS_ANDROID) |
28 #include "base/files/scoped_temp_dir.h" | 28 #include "base/files/scoped_temp_dir.h" |
29 #endif // defined(OS_LINUX) || defined(OS_OPENBSD) | 29 #endif |
30 | 30 |
31 #if defined(OS_WIN) | 31 #if defined(OS_WIN) |
32 #include "base/win/message_window.h" | 32 #include "base/win/message_window.h" |
33 #endif // defined(OS_WIN) | 33 #endif // defined(OS_WIN) |
34 | 34 |
35 class CommandLine; | 35 class CommandLine; |
36 | 36 |
37 // ProcessSingleton ---------------------------------------------------------- | 37 // ProcessSingleton ---------------------------------------------------------- |
38 // | 38 // |
39 // This class allows different browser processes to communicate with | 39 // This class allows different browser processes to communicate with |
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81 // false is returned, we are not the singleton instance and the caller must | 81 // false is returned, we are not the singleton instance and the caller must |
82 // exit. | 82 // exit. |
83 // NOTE: Most callers should generally prefer NotifyOtherProcessOrCreate() to | 83 // NOTE: Most callers should generally prefer NotifyOtherProcessOrCreate() to |
84 // this method, only callers for whom failure is prefered to notifying another | 84 // this method, only callers for whom failure is prefered to notifying another |
85 // process should call this directly. | 85 // process should call this directly. |
86 bool Create(); | 86 bool Create(); |
87 | 87 |
88 // Clear any lock state during shutdown. | 88 // Clear any lock state during shutdown. |
89 void Cleanup(); | 89 void Cleanup(); |
90 | 90 |
91 #if defined(OS_LINUX) || defined(OS_OPENBSD) | 91 #if defined(OS_POSIX) && !defined(OS_MACOSX) && !defined(OS_ANDROID) |
92 static void DisablePromptForTesting(); | 92 static void DisablePromptForTesting(); |
93 #endif // defined(OS_LINUX) || defined(OS_OPENBSD) | 93 #endif |
94 | 94 |
95 protected: | 95 protected: |
96 // Notify another process, if available. | 96 // Notify another process, if available. |
97 // Returns true if another process was found and notified, false if we should | 97 // Returns true if another process was found and notified, false if we should |
98 // continue with the current process. | 98 // continue with the current process. |
99 // On Windows, Create() has to be called before this. | 99 // On Windows, Create() has to be called before this. |
100 NotifyResult NotifyOtherProcess(); | 100 NotifyResult NotifyOtherProcess(); |
101 | 101 |
102 #if defined(OS_LINUX) || defined(OS_OPENBSD) | 102 #if defined(OS_POSIX) && !defined(OS_MACOSX) && !defined(OS_ANDROID) |
103 // Exposed for testing. We use a timeout on Linux, and in tests we want | 103 // Exposed for testing. We use a timeout on Linux, and in tests we want |
104 // this timeout to be short. | 104 // this timeout to be short. |
105 NotifyResult NotifyOtherProcessWithTimeout(const CommandLine& command_line, | 105 NotifyResult NotifyOtherProcessWithTimeout(const CommandLine& command_line, |
106 int timeout_seconds, | 106 int timeout_seconds, |
107 bool kill_unresponsive); | 107 bool kill_unresponsive); |
108 NotifyResult NotifyOtherProcessWithTimeoutOrCreate( | 108 NotifyResult NotifyOtherProcessWithTimeoutOrCreate( |
109 const CommandLine& command_line, | 109 const CommandLine& command_line, |
110 int timeout_seconds); | 110 int timeout_seconds); |
111 void OverrideCurrentPidForTesting(base::ProcessId pid); | 111 void OverrideCurrentPidForTesting(base::ProcessId pid); |
112 void OverrideKillCallbackForTesting( | 112 void OverrideKillCallbackForTesting( |
113 const base::Callback<void(int)>& callback); | 113 const base::Callback<void(int)>& callback); |
114 #endif // defined(OS_LINUX) || defined(OS_OPENBSD) | 114 #endif |
115 | 115 |
116 private: | 116 private: |
117 #if !defined(OS_MACOSX) | 117 #if !defined(OS_MACOSX) |
118 // Timeout for the current browser process to respond. 20 seconds should be | 118 // Timeout for the current browser process to respond. 20 seconds should be |
119 // enough. It's only used in Windows and Linux implementations. | 119 // enough. It's only used in Windows and Linux implementations. |
120 static const int kTimeoutInSeconds = 20; | 120 static const int kTimeoutInSeconds = 20; |
121 #endif | 121 #endif |
122 | 122 |
123 NotificationCallback notification_callback_; // Handler for notifications. | 123 NotificationCallback notification_callback_; // Handler for notifications. |
124 | 124 |
125 #if defined(OS_WIN) | 125 #if defined(OS_WIN) |
126 bool EscapeVirtualization(const base::FilePath& user_data_dir); | 126 bool EscapeVirtualization(const base::FilePath& user_data_dir); |
127 | 127 |
128 HWND remote_window_; // The HWND_MESSAGE of another browser. | 128 HWND remote_window_; // The HWND_MESSAGE of another browser. |
129 base::win::MessageWindow window_; // The message-only window. | 129 base::win::MessageWindow window_; // The message-only window. |
130 bool is_virtualized_; // Stuck inside Microsoft Softricity VM environment. | 130 bool is_virtualized_; // Stuck inside Microsoft Softricity VM environment. |
131 HANDLE lock_file_; | 131 HANDLE lock_file_; |
132 base::FilePath user_data_dir_; | 132 base::FilePath user_data_dir_; |
133 #elif defined(OS_LINUX) || defined(OS_OPENBSD) | 133 #elif defined(OS_POSIX) && !defined(OS_MACOSX) && !defined(OS_ANDROID) |
134 // Return true if the given pid is one of our child processes. | 134 // Return true if the given pid is one of our child processes. |
135 // Assumes that the current pid is the root of all pids of the current | 135 // Assumes that the current pid is the root of all pids of the current |
136 // instance. | 136 // instance. |
137 bool IsSameChromeInstance(pid_t pid); | 137 bool IsSameChromeInstance(pid_t pid); |
138 | 138 |
139 // Extract the process's pid from a symbol link path and if it is on | 139 // Extract the process's pid from a symbol link path and if it is on |
140 // the same host, kill the process, unlink the lock file and return true. | 140 // the same host, kill the process, unlink the lock file and return true. |
141 // If the process is part of the same chrome instance, unlink the lock file | 141 // If the process is part of the same chrome instance, unlink the lock file |
142 // and return true without killing it. | 142 // and return true without killing it. |
143 // If the process is on a different host, return false. | 143 // If the process is on a different host, return false. |
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176 // File descriptor associated with the lockfile, valid between | 176 // File descriptor associated with the lockfile, valid between |
177 // |Create()| and |Cleanup()|. Two instances cannot have a lock on | 177 // |Create()| and |Cleanup()|. Two instances cannot have a lock on |
178 // the same file at the same time. | 178 // the same file at the same time. |
179 int lock_fd_; | 179 int lock_fd_; |
180 #endif | 180 #endif |
181 | 181 |
182 DISALLOW_COPY_AND_ASSIGN(ProcessSingleton); | 182 DISALLOW_COPY_AND_ASSIGN(ProcessSingleton); |
183 }; | 183 }; |
184 | 184 |
185 #endif // CHROME_BROWSER_PROCESS_SINGLETON_H_ | 185 #endif // CHROME_BROWSER_PROCESS_SINGLETON_H_ |
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