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| 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 | |
| 3 // found in the LICENSE file. | |
| 4 | |
| 5 #include "base/process.h" | |
| 6 #include "base/logging.h" | |
| 7 #include "base/memory/scoped_ptr.h" | |
| 8 #include "base/process_util.h" | |
| 9 #include "base/win/windows_version.h" | |
| 10 | |
| 11 namespace base { | |
| 12 | |
| 13 void Process::Close() { | |
| 14 if (!process_) | |
| 15 return; | |
| 16 | |
| 17 // Don't call CloseHandle on a pseudo-handle. | |
| 18 if (process_ != ::GetCurrentProcess()) | |
| 19 ::CloseHandle(process_); | |
| 20 | |
| 21 process_ = NULL; | |
| 22 } | |
| 23 | |
| 24 void Process::Terminate(int result_code) { | |
| 25 if (!process_) | |
| 26 return; | |
| 27 | |
| 28 // Call NtTerminateProcess directly, without going through the import table, | |
| 29 // which might have been hooked with a buggy replacement by third party | |
| 30 // software. http://crbug.com/81449. | |
| 31 HMODULE module = GetModuleHandle(L"ntdll.dll"); | |
| 32 typedef UINT (WINAPI *TerminateProcessPtr)(HANDLE handle, UINT code); | |
| 33 TerminateProcessPtr terminate_process = reinterpret_cast<TerminateProcessPtr>( | |
| 34 GetProcAddress(module, "NtTerminateProcess")); | |
| 35 terminate_process(process_, result_code); | |
| 36 } | |
| 37 | |
| 38 bool Process::IsProcessBackgrounded() const { | |
| 39 if (!process_) | |
| 40 return false; // Failure case. | |
| 41 DWORD priority = GetPriority(); | |
| 42 if (priority == 0) | |
| 43 return false; // Failure case. | |
| 44 return ((priority == BELOW_NORMAL_PRIORITY_CLASS) || | |
| 45 (priority == IDLE_PRIORITY_CLASS)); | |
| 46 } | |
| 47 | |
| 48 bool Process::SetProcessBackgrounded(bool value) { | |
| 49 if (!process_) | |
| 50 return false; | |
| 51 // Vista and above introduce a real background mode, which not only | |
| 52 // sets the priority class on the threads but also on the IO generated | |
| 53 // by it. Unfortunately it can only be set for the calling process. | |
| 54 DWORD priority; | |
| 55 if ((base::win::GetVersion() >= base::win::VERSION_VISTA) && | |
| 56 (process_ == ::GetCurrentProcess())) { | |
| 57 priority = value ? PROCESS_MODE_BACKGROUND_BEGIN : | |
| 58 PROCESS_MODE_BACKGROUND_END; | |
| 59 } else { | |
| 60 priority = value ? BELOW_NORMAL_PRIORITY_CLASS : NORMAL_PRIORITY_CLASS; | |
| 61 } | |
| 62 | |
| 63 return (::SetPriorityClass(process_, priority) != 0); | |
| 64 } | |
| 65 | |
| 66 ProcessId Process::pid() const { | |
| 67 if (process_ == 0) | |
| 68 return 0; | |
| 69 | |
| 70 return GetProcId(process_); | |
| 71 } | |
| 72 | |
| 73 bool Process::is_current() const { | |
| 74 return process_ == GetCurrentProcess(); | |
| 75 } | |
| 76 | |
| 77 // static | |
| 78 Process Process::Current() { | |
| 79 return Process(::GetCurrentProcess()); | |
| 80 } | |
| 81 | |
| 82 // static | |
| 83 bool Process::CanBackgroundProcesses() { | |
| 84 return true; | |
| 85 } | |
| 86 | |
| 87 int Process::GetPriority() const { | |
| 88 DCHECK(process_); | |
| 89 return ::GetPriorityClass(process_); | |
| 90 } | |
| 91 | |
| 92 } // namespace base | |
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Chromium Code Reviews
Issue 19519008:
Move the remaning base/process* files into base/process/. (Closed)
Base URL: svn://svn.chromium.org/chrome/trunk/src