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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 #include "base/process/launch.h" | 5 #include "base/process/launch.h" |
6 | 6 |
7 #include <fcntl.h> | 7 #include <fcntl.h> |
8 #include <io.h> | 8 #include <io.h> |
9 #include <shellapi.h> | 9 #include <shellapi.h> |
10 #include <windows.h> | 10 #include <windows.h> |
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56 // that case, we don't want to open CONOUT$, because its output | 56 // that case, we don't want to open CONOUT$, because its output |
57 // likely does not go anywhere. | 57 // likely does not go anywhere. |
58 // | 58 // |
59 // We don't use GetStdHandle() to check stdout/stderr here because | 59 // We don't use GetStdHandle() to check stdout/stderr here because |
60 // it can return dangling IDs of handles that were never inherited | 60 // it can return dangling IDs of handles that were never inherited |
61 // by this process. These IDs could have been reused by the time | 61 // by this process. These IDs could have been reused by the time |
62 // this function is called. The CRT checks the validity of | 62 // this function is called. The CRT checks the validity of |
63 // stdout/stderr on startup (before the handle IDs can be reused). | 63 // stdout/stderr on startup (before the handle IDs can be reused). |
64 // _fileno(stdout) will return -2 (_NO_CONSOLE_FILENO) if stdout was | 64 // _fileno(stdout) will return -2 (_NO_CONSOLE_FILENO) if stdout was |
65 // invalid. | 65 // invalid. |
66 if (_fileno(stdout) >= 0 || _fileno(stderr) >= 0) { | 66 if (_fileno(stdout) >= 0 || _fileno(stderr) >= 0) |
67 // _fileno was broken for SUBSYSTEM:WINDOWS from VS2010 to VS2012/2013. | 67 return; |
68 // http://crbug.com/358267. Confirm that the underlying HANDLE is valid | |
69 // before aborting. | |
70 intptr_t stdout_handle = _get_osfhandle(_fileno(stdout)); | |
71 intptr_t stderr_handle = _get_osfhandle(_fileno(stderr)); | |
72 if (stdout_handle >= 0 || stderr_handle >= 0) | |
73 return; | |
74 } | |
75 | 68 |
76 if (!AttachConsole(ATTACH_PARENT_PROCESS)) { | 69 if (!AttachConsole(ATTACH_PARENT_PROCESS)) { |
77 unsigned int result = GetLastError(); | 70 unsigned int result = GetLastError(); |
78 // Was probably already attached. | 71 // Was probably already attached. |
79 if (result == ERROR_ACCESS_DENIED) | 72 if (result == ERROR_ACCESS_DENIED) |
80 return; | 73 return; |
81 // Don't bother creating a new console for each child process if the | 74 // Don't bother creating a new console for each child process if the |
82 // parent process is invalid (eg: crashed). | 75 // parent process is invalid (eg: crashed). |
83 if (result == ERROR_GEN_FAILURE) | 76 if (result == ERROR_GEN_FAILURE) |
84 return; | 77 return; |
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366 WaitForSingleObject(proc_info.process_handle(), INFINITE); | 359 WaitForSingleObject(proc_info.process_handle(), INFINITE); |
367 | 360 |
368 return true; | 361 return true; |
369 } | 362 } |
370 | 363 |
371 void RaiseProcessToHighPriority() { | 364 void RaiseProcessToHighPriority() { |
372 SetPriorityClass(GetCurrentProcess(), HIGH_PRIORITY_CLASS); | 365 SetPriorityClass(GetCurrentProcess(), HIGH_PRIORITY_CLASS); |
373 } | 366 } |
374 | 367 |
375 } // namespace base | 368 } // namespace base |
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