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Side by Side Diff: base/process/process.h

Issue 1142913004: Revert of Add support for backgrounding processes on the Mac (Closed) Base URL: https://chromium.googlesource.com/chromium/src.git@master
Patch Set: Created 5 years, 7 months ago
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1 // Copyright 2011 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_PROCESS_PROCESS_H_ 5 #ifndef BASE_PROCESS_PROCESS_H_
6 #define BASE_PROCESS_PROCESS_H_ 6 #define BASE_PROCESS_PROCESS_H_
7 7
8 #include "base/base_export.h" 8 #include "base/base_export.h"
9 #include "base/basictypes.h" 9 #include "base/basictypes.h"
10 #include "base/move.h" 10 #include "base/move.h"
11 #include "base/process/process_handle.h" 11 #include "base/process/process_handle.h"
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100 100
101 // Waits for the process to exit. Returns true on success. 101 // Waits for the process to exit. Returns true on success.
102 // On POSIX, if the process has been signaled then |exit_code| is set to -1. 102 // On POSIX, if the process has been signaled then |exit_code| is set to -1.
103 // On Linux this must be a child process, however on Mac and Windows it can be 103 // On Linux this must be a child process, however on Mac and Windows it can be
104 // any process. 104 // any process.
105 bool WaitForExit(int* exit_code); 105 bool WaitForExit(int* exit_code);
106 106
107 // Same as WaitForExit() but only waits for up to |timeout|. 107 // Same as WaitForExit() but only waits for up to |timeout|.
108 bool WaitForExitWithTimeout(TimeDelta timeout, int* exit_code); 108 bool WaitForExitWithTimeout(TimeDelta timeout, int* exit_code);
109 109
110 #if defined(OS_MACOSX)
111 // The Mac needs a Mach port in order to manipulate a process's priority,
112 // and there's no good way to get that from base given the pid. These Mac
113 // variants of the IsProcessBackgrounded and SetProcessBackgrounded API take
114 // the Mach port for this reason. See crbug.com/460102
115 //
116 // A process is backgrounded when its priority is lower than normal.
117 // Return true if the process with mach port |task_port| is backgrounded,
118 // false otherwise.
119 bool IsProcessBackgrounded(mach_port_t task_port) const;
120
121 // Set the process with the specified mach port as backgrounded. If value is
122 // true, the priority of the process will be lowered. If value is false, the
123 // priority of the process will be made "normal" - equivalent to default
124 // process priority. Returns true if the priority was changed, false
125 // otherwise.
126 bool SetProcessBackgrounded(mach_port_t task_port, bool value);
127 #else
128 // A process is backgrounded when it's priority is lower than normal. 110 // A process is backgrounded when it's priority is lower than normal.
129 // Return true if this process is backgrounded, false otherwise. 111 // Return true if this process is backgrounded, false otherwise.
130 bool IsProcessBackgrounded() const; 112 bool IsProcessBackgrounded() const;
131 113
132 // Set a process as backgrounded. If value is true, the priority of the 114 // Set a process as backgrounded. If value is true, the priority of the
133 // process will be lowered. If value is false, the priority of the process 115 // process will be lowered. If value is false, the priority of the process
134 // will be made "normal" - equivalent to default process priority. 116 // will be made "normal" - equivalent to default process priority.
135 // Returns true if the priority was changed, false otherwise. 117 // Returns true if the priority was changed, false otherwise.
136 bool SetProcessBackgrounded(bool value); 118 bool SetProcessBackgrounded(bool value);
137 #endif // defined(OS_MACOSX) 119
138 // Returns an integer representing the priority of a process. The meaning 120 // Returns an integer representing the priority of a process. The meaning
139 // of this value is OS dependent. 121 // of this value is OS dependent.
140 int GetPriority() const; 122 int GetPriority() const;
141 123
142 private: 124 private:
143 #if defined(OS_WIN) 125 #if defined(OS_WIN)
144 bool is_current_process_; 126 bool is_current_process_;
145 win::ScopedHandle process_; 127 win::ScopedHandle process_;
146 #else 128 #else
147 ProcessHandle process_; 129 ProcessHandle process_;
148 #endif 130 #endif
149 }; 131 };
150 132
151 } // namespace base 133 } // namespace base
152 134
153 #endif // BASE_PROCESS_PROCESS_H_ 135 #endif // BASE_PROCESS_PROCESS_H_
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