src/Utils/CreateProcessHelper.h

   1 // TortoiseGit - a Windows shell extension for easy version control
   2
   3 // Copyright (C) 2009-2010 - TortoiseSVN
   4
   5 // This program is free software; you can redistribute it and/or
   6 // modify it under the terms of the GNU General Public License
   7 // as published by the Free Software Foundation; either version 2
   8 // of the License, or (at your option) any later version.
   9
  10 // This program is distributed in the hope that it will be useful,
  11 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13 // GNU General Public License for more details.
  14
  15 // You should have received a copy of the GNU General Public License
  16 // along with this program; if not, write to the Free Software Foundation,
  17 // 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  18 //
  19 #pragma once
  20
  21 /**
  22  * A helper class for invoking CreateProcess(). The lpProcessInformation
  23  * can point to an uninitialized struct - it's memset to all zeroes inside.
  24  */
  25
  26 class CCreateProcessHelper
  27 {
  28 public:
  29     static bool CreateProcess(LPCTSTR lpApplicationName,
  30                     LPTSTR lpCommandLine,
  31                     LPCTSTR lpCurrentDirectory,
  32                     LPPROCESS_INFORMATION lpProcessInformation);
  33     static bool CreateProcess(LPCTSTR lpApplicationName,
  34                     LPTSTR lpCommandLine,
  35                     LPPROCESS_INFORMATION lpProcessInformation);
  36
  37     static bool CreateProcessDetached(LPCTSTR lpApplicationName,
  38                     LPTSTR lpCommandLine,
  39                     LPCTSTR lpCurrentDirectory);
  40     static bool CreateProcessDetached(LPCTSTR lpApplicationName,
  41                     LPTSTR lpCommandLine);
  42 };
  43
  44 inline bool CCreateProcessHelper::CreateProcess(LPCTSTR applicationName,
  45     LPTSTR commandLine, LPCTSTR currentDirectory,
  46     LPPROCESS_INFORMATION processInfo)
  47 {
  48     STARTUPINFO startupInfo;
  49     memset(&startupInfo, 0, sizeof(STARTUPINFO));
  50     startupInfo.cb = sizeof(STARTUPINFO);
  51
  52     memset(processInfo, 0, sizeof(PROCESS_INFORMATION));
  53     const BOOL result = ::CreateProcess( applicationName,
  54                     commandLine, NULL, NULL, FALSE, 0, 0, currentDirectory,
  55                     &startupInfo, processInfo );
  56     return result != 0;
  57 }
  58
  59 inline bool CCreateProcessHelper::CreateProcess(LPCTSTR applicationName,
  60     LPTSTR commandLine, LPPROCESS_INFORMATION processInformation)
  61 {
  62     return CreateProcess( applicationName, commandLine, 0, processInformation );
  63 }
  64
  65 inline bool CCreateProcessHelper::CreateProcessDetached(LPCTSTR lpApplicationName,
  66     LPTSTR lpCommandLine, LPCTSTR lpCurrentDirectory)
  67 {
  68     PROCESS_INFORMATION process;
  69     if (!CreateProcess(lpApplicationName, lpCommandLine, lpCurrentDirectory, &process))
  70         return false;
  71
  72     CloseHandle(process.hThread);
  73     CloseHandle(process.hProcess);
  74     return true;
  75 }
  76
  77 inline bool CCreateProcessHelper::CreateProcessDetached(LPCTSTR lpApplicationName,
  78     LPTSTR lpCommandLine)
  79 {
  80     return CreateProcessDetached(lpApplicationName, lpCommandLine, 0);
  81 }