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1 // Copyright (c) 2006-2008 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2006-2008 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_PROCESS_H__ | 5 #ifndef BASE_PROCESS_H_ |
6 #define BASE_PROCESS_H__ | 6 #define BASE_PROCESS_H_ |
7 | 7 |
8 #include "base/basictypes.h" | 8 #include "base/basictypes.h" |
9 | 9 |
10 #ifdef OS_WIN | 10 #ifdef OS_WIN |
11 #include <windows.h> | 11 #include <windows.h> |
12 #endif | 12 #endif |
13 | 13 |
| 14 namespace base { |
| 15 |
14 // ProcessHandle is a platform specific type which represents the underlying OS | 16 // ProcessHandle is a platform specific type which represents the underlying OS |
15 // handle to a process. | 17 // handle to a process. |
16 #if defined(OS_WIN) | 18 #if defined(OS_WIN) |
17 typedef HANDLE ProcessHandle; | 19 typedef HANDLE ProcessHandle; |
18 #elif defined(OS_POSIX) | 20 #elif defined(OS_POSIX) |
19 // On POSIX, our ProcessHandle will just be the PID. | 21 // On POSIX, our ProcessHandle will just be the PID. |
20 typedef int ProcessHandle; | 22 typedef int ProcessHandle; |
21 #endif | 23 #endif |
22 | 24 |
23 // A Process | |
24 // TODO(mbelshe): Replace existing code which uses the ProcessHandle w/ the | |
25 // Process object where relevant. | |
26 class Process { | 25 class Process { |
27 public: | 26 public: |
28 Process() : process_(0), last_working_set_size_(0) {} | 27 Process() : process_(0), last_working_set_size_(0) {} |
29 explicit Process(ProcessHandle handle) : | 28 explicit Process(ProcessHandle handle) : |
30 process_(handle), last_working_set_size_(0) {} | 29 process_(handle), last_working_set_size_(0) {} |
31 | 30 |
32 // A handle to the current process. | 31 // A handle to the current process. |
33 static Process Current(); | 32 static Process Current(); |
34 | 33 |
35 // Get/Set the handle for this process. The handle will be 0 if the process | 34 // Get/Set the handle for this process. The handle will be 0 if the process |
36 // is no longer running. | 35 // is no longer running. |
37 ProcessHandle handle() const { return process_; } | 36 ProcessHandle handle() const { return process_; } |
38 void set_handle(ProcessHandle handle) { process_ = handle; } | 37 void set_handle(ProcessHandle handle) { process_ = handle; } |
39 | 38 |
40 // Get the PID for this process. | 39 // Get the PID for this process. |
41 int32 pid() const; | 40 int32 pid() const; |
42 | 41 |
43 // Is the this process the current process. | 42 // Is the this process the current process. |
44 bool is_current() const; | 43 bool is_current() const; |
45 | 44 |
46 // Close the Process Handle. | 45 // Close the process handle. This will not terminate the process. |
47 void Close() { | 46 void Close(); |
48 #ifdef OS_WIN | 47 |
49 CloseHandle(process_); | 48 // Terminates the process with extreme prejudice. The given result code will |
50 #endif | 49 // be the exit code of the process. If the process has already exited, this |
51 process_ = 0; | 50 // will do nothing. |
52 } | 51 void Terminate(int result_code); |
53 | 52 |
54 // A process is backgrounded when it's priority is lower than normal. | 53 // A process is backgrounded when it's priority is lower than normal. |
55 // Return true if this process is backgrounded, false otherwise. | 54 // Return true if this process is backgrounded, false otherwise. |
56 bool IsProcessBackgrounded() const; | 55 bool IsProcessBackgrounded() const; |
57 | 56 |
58 // Set a prcess as backgrounded. If value is true, the priority | 57 // Set a prcess as backgrounded. If value is true, the priority |
59 // of the process will be lowered. If value is false, the priority | 58 // of the process will be lowered. If value is false, the priority |
60 // of the process will be made "normal" - equivalent to default | 59 // of the process will be made "normal" - equivalent to default |
61 // process priority. | 60 // process priority. |
62 // Returns true if the priority was changed, false otherwise. | 61 // Returns true if the priority was changed, false otherwise. |
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78 | 77 |
79 // Releases as much of the working set back to the OS as possible. | 78 // Releases as much of the working set back to the OS as possible. |
80 // Returns true if successful, false otherwise. | 79 // Returns true if successful, false otherwise. |
81 bool EmptyWorkingSet(); | 80 bool EmptyWorkingSet(); |
82 | 81 |
83 private: | 82 private: |
84 ProcessHandle process_; | 83 ProcessHandle process_; |
85 size_t last_working_set_size_; | 84 size_t last_working_set_size_; |
86 }; | 85 }; |
87 | 86 |
88 #endif // BASE_PROCESS_H__ | 87 } // namespace base |
89 | 88 |
| 89 #endif // BASE_PROCESS_H_ |
| 90 |
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