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Diffstat (limited to 'Source/kwsys/ProcessFwd9x.c')
-rw-r--r-- | Source/kwsys/ProcessFwd9x.c | 211 |
1 files changed, 0 insertions, 211 deletions
diff --git a/Source/kwsys/ProcessFwd9x.c b/Source/kwsys/ProcessFwd9x.c deleted file mode 100644 index 536c54b..0000000 --- a/Source/kwsys/ProcessFwd9x.c +++ /dev/null @@ -1,211 +0,0 @@ -/*============================================================================ - KWSys - Kitware System Library - Copyright 2000-2009 Kitware, Inc., Insight Software Consortium - - Distributed under the OSI-approved BSD License (the "License"); - see accompanying file Copyright.txt for details. - - This software is distributed WITHOUT ANY WARRANTY; without even the - implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. - See the License for more information. -============================================================================*/ - -/* - On Windows9x platforms, this executable is spawned between a parent - process and the child it is invoking to work around a bug. See the - Win32 implementation file for details. - - Future Work: This executable must be linked statically against the C - runtime library before being encoded into the library. Building it - in this way may be hard because CMake has limited abilities to build - different targets with different configurations in the same - directory. We may just have to create and encode the executable - once instead of generating it during the build. This would be an - acceptable solution because the forwarding executable should not - change very often and is pretty simple. -*/ - -#ifdef _MSC_VER -#pragma warning (push, 1) -#endif -#include <windows.h> -#include <stdio.h> - -void ReportLastError(HANDLE errorPipe); - -int main() -{ - /* Process startup information for the real child. */ - STARTUPINFO si; - PROCESS_INFORMATION pi; - - /* The result of waiting for the child to exit. */ - DWORD waitResult; - - /* The child's process return code. */ - DWORD retVal; - - /* The command line used to invoke this process. */ - LPSTR commandLine = GetCommandLine(); - - /* Pointer that will be advanced to the beginning of the command - line of the real child process. */ - LPSTR cmdLine = commandLine; - - /* Handle to the error reporting pipe provided by the parent. This - is parsed off the command line. */ - HANDLE errorPipe = 0; - HANDLE errorPipeOrig = 0; - - /* Handle to the event the parent uses to tell us to resume the child. - This is parsed off the command line. */ - HANDLE resumeEvent = 0; - - /* Handle to the event the parent uses to tell us to kill the child. - This is parsed off the command line. */ - HANDLE killEvent = 0; - - /* Flag for whether to hide window of child process. */ - int hideWindow = 0; - - /* An array of the handles on which we wait when the child is - running. */ - HANDLE waitHandles[2] = {0, 0}; - - /* Move the pointer past the name of this executable. */ - if(*cmdLine == '"') - { - ++cmdLine; - while(*cmdLine && *cmdLine != '"') { ++cmdLine; } - if(*cmdLine) { ++cmdLine; } - } - else - { - while(*cmdLine && *cmdLine != ' ') { ++cmdLine; } - } - - /* Parse the error pipe handle. */ - while(*cmdLine && *cmdLine == ' ') { ++cmdLine; } - sscanf(cmdLine, "%p", &errorPipeOrig); - - /* Parse the resume event handle. */ - while(*cmdLine && *cmdLine != ' ') { ++cmdLine; } - while(*cmdLine && *cmdLine == ' ') { ++cmdLine; } - sscanf(cmdLine, "%p", &resumeEvent); - - /* Parse the kill event handle. */ - while(*cmdLine && *cmdLine != ' ') { ++cmdLine; } - while(*cmdLine && *cmdLine == ' ') { ++cmdLine; } - sscanf(cmdLine, "%p", &killEvent); - - /* Parse the hide window flag. */ - while(*cmdLine && *cmdLine != ' ') { ++cmdLine; } - while(*cmdLine && *cmdLine == ' ') { ++cmdLine; } - sscanf(cmdLine, "%d", &hideWindow); - - /* Skip to the beginning of the command line of the real child. */ - while(*cmdLine && *cmdLine != ' ') { ++cmdLine; } - while(*cmdLine && *cmdLine == ' ') { ++cmdLine; } - - /* Create a non-inherited copy of the error pipe. We do not want - the child to get it. */ - if(DuplicateHandle(GetCurrentProcess(), errorPipeOrig, - GetCurrentProcess(), &errorPipe, - 0, FALSE, DUPLICATE_SAME_ACCESS)) - { - /* Have a non-inherited duplicate. Close the inherited one. */ - CloseHandle(errorPipeOrig); - } - else - { - /* Could not duplicate handle. Report the error. */ - ReportLastError(errorPipeOrig); - return 1; - } - - /* Create the subprocess. */ - ZeroMemory(&si, sizeof(si)); - ZeroMemory(&pi, sizeof(pi)); - si.cb = sizeof(si); - si.dwFlags = STARTF_USESTDHANDLES|STARTF_USESHOWWINDOW; - si.wShowWindow = hideWindow?SW_HIDE:SW_SHOWDEFAULT; - si.hStdInput = GetStdHandle(STD_INPUT_HANDLE); - si.hStdOutput = GetStdHandle(STD_OUTPUT_HANDLE); - si.hStdError = GetStdHandle(STD_ERROR_HANDLE); - if(CreateProcess(0, cmdLine, 0, 0, TRUE, CREATE_SUSPENDED, 0, 0, &si, &pi)) - { - /* Process created successfully. Close the error reporting pipe - to notify the parent of success. */ - CloseHandle(errorPipe); - } - else - { - /* Error creating the process. Report the error to the parent - process through the special error reporting pipe. */ - ReportLastError(errorPipe); - return 1; - } - - /* Wait for resume or kill event from parent. */ - waitHandles[0] = killEvent; - waitHandles[1] = resumeEvent; - waitResult = WaitForMultipleObjects(2, waitHandles, 0, INFINITE); - - /* Check what happened. */ - if(waitResult == WAIT_OBJECT_0) - { - /* We were asked to kill the child. */ - TerminateProcess(pi.hProcess, 255); - WaitForSingleObject(pi.hProcess, INFINITE); - CloseHandle(pi.hProcess); - CloseHandle(pi.hThread); - return 1; - } - else - { - /* We were asked to resume the child. */ - ResumeThread(pi.hThread); - CloseHandle(pi.hThread); - } - - /* Wait for subprocess to exit or for kill event from parent. */ - waitHandles[0] = killEvent; - waitHandles[1] = pi.hProcess; - waitResult = WaitForMultipleObjects(2, waitHandles, 0, INFINITE); - - /* Check what happened. */ - if(waitResult == WAIT_OBJECT_0) - { - /* We were asked to kill the child. */ - TerminateProcess(pi.hProcess, 255); - WaitForSingleObject(pi.hProcess, INFINITE); - CloseHandle(pi.hProcess); - return 1; - } - else - { - /* The child exited. Get the return code. */ - GetExitCodeProcess(pi.hProcess, &retVal); - CloseHandle(pi.hProcess); - return retVal; - } -} - -void ReportLastError(HANDLE errorPipe) -{ - LPVOID lpMsgBuf; - DWORD n; - FormatMessage( - FORMAT_MESSAGE_ALLOCATE_BUFFER | - FORMAT_MESSAGE_FROM_SYSTEM | - FORMAT_MESSAGE_IGNORE_INSERTS, - NULL, - GetLastError(), - MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), // Default language - (LPTSTR) &lpMsgBuf, - 0, - NULL - ); - WriteFile(errorPipe, lpMsgBuf, strlen(lpMsgBuf)+1, &n, 0); - LocalFree( lpMsgBuf ); -} |