static HANDLE createProcess(const String& win32ProgramFileName,
const String& commandLine,
EnvMap::Ptr environmentMap = Null,
HANDLE* inputHandle = NULL,
HANDLE* outputHandle = NULL,
HANDLE* stderrHandle = NULL)
{
STARTUPINFO su;
memset(&su, 0, sizeof(su));
su.cb = sizeof(su);
bool useHandles = ( inputHandle != NULL
&& outputHandle != NULL
&& stderrHandle != NULL);
HANDLE stdinRead, stdinWrite;
HANDLE stdoutRead, stdoutWrite;
HANDLE stderrRead, stderrWrite;
if (useHandles)
{
createPipeForCreatedProcess(&stdinRead, &stdinWrite);
createPipeForCreatedProcess(&stdoutRead, &stdoutWrite);
createPipeForCreatedProcess(&stderrRead, &stderrWrite);
setInheritFlag(stdinRead);
setInheritFlag(stdoutWrite);
setInheritFlag(stderrWrite);
*inputHandle = stdinWrite;
*outputHandle = stdoutRead;
*stderrHandle = stderrRead;
su.hStdInput = stdinRead;
su.hStdOutput = stdoutWrite;
su.hStdError = stderrWrite;
su.dwFlags |= STARTF_USESTDHANDLES;
}
PROCESS_INFORMATION pi;
memset(&pi, 0, sizeof(pi));
CharArray commandLineBuffer;
commandLineBuffer.appendString(commandLine);
commandLineBuffer.append('\0');
{
char* environmentStringsPtr = NULL;
CharArray environmentStrings;
if (environmentMap.isValid()) {
environmentStrings.appendString(buildEnvironmentStringsFromMap(environmentMap));
environmentStringsPtr = environmentStrings.getPtr();
}
const bool inheritHandles = useHandles;
bool wasOK = CreateProcess(win32ProgramFileName.toCString(), // lpApplicationName
commandLineBuffer.getPtr(), // lpCommandLine
0, // lpProcessAttributes,
0, // lpThreadAttributes,
inheritHandles, // bInheritHandles,
DETACHED_PROCESS|HIGH_PRIORITY_CLASS, // dwCreationFlags,
environmentStringsPtr, // lpEnvironment,
NULL, // lpCurrentDirectory,
&su, // in: lpStartupInfo,
&pi); // out: lpProcessInformation
if (!wasOK)
{
throw SystemException(String() << "Error in call to Win32 CreateProcess for '" << win32ProgramFileName << "'");
}
}
if (useHandles) {
CloseHandle(stdinRead);
CloseHandle(stdoutWrite);
CloseHandle(stderrWrite);
}
CloseHandle(pi.hThread);
return pi.hProcess;
}
