bool QProcessPrivate::waitForFinished(int msecs)
{
Q_Q(QProcess);
#if defined QPROCESS_DEBUG
qDebug("QProcessPrivate::waitForFinished(%d)", msecs);
#endif
QIncrementalSleepTimer timer(msecs);
forever {
if (!pid)
return true;
if (WaitForSingleObject(pid->hProcess, timer.nextSleepTime()) == WAIT_OBJECT_0) {
_q_processDied();
return true;
}
if (timer.hasTimedOut())
break;
}
processError = QProcess::Timedout;
q->setErrorString(QProcess::tr("Process operation timed out"));
return false;
}
bool QProcessPrivate::waitForReadyRead(int msecs)
{
Q_Q(QProcess);
QIncrementalSleepTimer timer(msecs);
forever {
if (!writeBuffer.isEmpty() && !_q_canWrite())
return false;
if (pipeWriter && pipeWriter->waitForWrite(0))
timer.resetIncrements();
if (processChannelMode != QProcess::ForwardedChannels
&& ((stdoutReader && stdoutReader->waitForReadyRead(0))
|| (stderrReader && stderrReader->waitForReadyRead(0))))
return true;
if (!pid)
return false;
if (WaitForSingleObject(pid->hProcess, 0) == WAIT_OBJECT_0) {
bool readyReadEmitted = drainOutputPipes(this);
_q_processDied();
return readyReadEmitted;
}
Sleep(timer.nextSleepTime());
if (timer.hasTimedOut())
break;
}
processError = QProcess::Timedout;
q->setErrorString(QProcess::tr("Process operation timed out"));
return false;
}
bool QProcessPrivate::waitForReadyRead(int msecs)
{
Q_Q(QProcess);
#if defined(Q_OS_WINCE)
processError = QProcess::ReadError;
q->setErrorString(QProcess::tr("Error reading from process"));
emit q->error(processError);
return false;
#endif
QIncrementalSleepTimer timer(msecs);
forever {
if (!writeBuffer.isEmpty() && !_q_canWrite())
return false;
if (pipeWriter && pipeWriter->waitForWrite(0))
timer.resetIncrements();
bool readyReadEmitted = false;
if (bytesAvailableFromStdout() != 0) {
readyReadEmitted = _q_canReadStandardOutput() ? true : readyReadEmitted;
timer.resetIncrements();
}
if (bytesAvailableFromStderr() != 0) {
readyReadEmitted = _q_canReadStandardError() ? true : readyReadEmitted;
timer.resetIncrements();
}
if (readyReadEmitted)
return true;
if (!pid)
return false;
if (WaitForSingleObject(pid->hProcess, 0) == WAIT_OBJECT_0) {
// find the return value if there is noew data to read
_q_processDied();
return false;
}
Sleep(timer.nextSleepTime());
if (timer.hasTimedOut())
break;
}
processError = QProcess::Timedout;
q->setErrorString(QProcess::tr("Process operation timed out"));
return false;
}
bool QProcessPrivate::waitForFinished(int msecs)
{
Q_Q(QProcess);
#if defined QPROCESS_DEBUG
qDebug("QProcessPrivate::waitForFinished(%d)", msecs);
#endif
if (!pid)
return true;
if (WaitForSingleObject(pid->hProcess, msecs == -1 ? INFINITE : msecs) == WAIT_OBJECT_0) {
_q_processDied();
return true;
}
setError(QProcess::Timedout);
return false;
}
bool QProcessPrivate::waitForFinished(int msecs)
{
Q_Q(QProcess);
#if defined QPROCESS_DEBUG
qDebug("QProcessPrivate::waitForFinished(%d)", msecs);
#endif
QIncrementalSleepTimer timer(msecs);
forever {
if (!writeBuffer.isEmpty() && !_q_canWrite())
return false;
if (pipeWriter && pipeWriter->waitForWrite(0))
timer.resetIncrements();
if (bytesAvailableFromStdout() != 0) {
_q_canReadStandardOutput();
timer.resetIncrements();
}
if (bytesAvailableFromStderr() != 0) {
_q_canReadStandardError();
timer.resetIncrements();
}
if (!pid)
return true;
if (WaitForSingleObject(pid->hProcess, timer.nextSleepTime()) == WAIT_OBJECT_0) {
_q_processDied();
return true;
}
if (timer.hasTimedOut())
break;
}
processError = QProcess::Timedout;
q->setErrorString(QProcess::tr("Process operation timed out"));
return false;
}
bool QProcessPrivate::waitForFinished(int msecs)
{
Q_Q(QProcess);
#if defined QPROCESS_DEBUG
qDebug("QProcessPrivate::waitForFinished(%d)", msecs);
#endif
QIncrementalSleepTimer timer(msecs);
forever {
if (!stdinChannel.buffer.isEmpty() && !_q_canWrite())
return false;
if (stdinChannel.writer && stdinChannel.writer->waitForWrite(0))
timer.resetIncrements();
if (stdoutChannel.reader && stdoutChannel.reader->waitForReadyRead(0))
timer.resetIncrements();
if (stderrChannel.reader && stderrChannel.reader->waitForReadyRead(0))
timer.resetIncrements();
if (!pid) {
drainOutputPipes();
return true;
}
if (WaitForSingleObject(pid->hProcess, timer.nextSleepTime()) == WAIT_OBJECT_0) {
drainOutputPipes();
_q_processDied();
return true;
}
if (timer.hasTimedOut())
break;
}
processError = QProcess::Timedout;
q->setErrorString(QProcess::tr("Process operation timed out"));
return false;
}
void QProcessPrivate::startProcess()
{
Q_Q(QProcess);
bool success = false;
if (pid) {
CloseHandle(pid->hThread);
CloseHandle(pid->hProcess);
delete pid;
pid = 0;
}
pid = new PROCESS_INFORMATION;
memset(pid, 0, sizeof(PROCESS_INFORMATION));
q->setProcessState(QProcess::Starting);
QString args = qt_create_commandline(QString(), arguments);
if (!nativeArguments.isEmpty()) {
if (!args.isEmpty())
args += QLatin1Char(' ');
args += nativeArguments;
}
#if defined QPROCESS_DEBUG
qDebug("Creating process");
qDebug(" program : [%s]", program.toLatin1().constData());
qDebug(" args : %s", args.toLatin1().constData());
qDebug(" pass environment : %s", environment.isEmpty() ? "no" : "yes");
#endif
QString fullPathProgram = program;
if (!QDir::isAbsolutePath(fullPathProgram))
fullPathProgram = QFileInfo(fullPathProgram).absoluteFilePath();
fullPathProgram.replace(QLatin1Char('/'), QLatin1Char('\\'));
success = CreateProcess((wchar_t*)fullPathProgram.utf16(),
(wchar_t*)args.utf16(),
0, 0, false, 0, 0, 0, 0, pid);
if (!success) {
cleanup();
processError = QProcess::FailedToStart;
emit q->error(processError);
q->setProcessState(QProcess::NotRunning);
return;
}
q->setProcessState(QProcess::Running);
// User can call kill()/terminate() from the stateChanged() slot
// so check before proceeding
if (!pid)
return;
if (threadData->hasEventDispatcher()) {
processFinishedNotifier = new QWinEventNotifier(pid->hProcess, q);
QObject::connect(processFinishedNotifier, SIGNAL(activated(HANDLE)), q, SLOT(_q_processDied()));
processFinishedNotifier->setEnabled(true);
}
// give the process a chance to start ...
Sleep(SLEEPMIN * 2);
_q_startupNotification();
}
bool QProcessPrivate::waitForBytesWritten(int msecs)
{
Q_Q(QProcess);
QIncrementalSleepTimer timer(msecs);
forever {
// Check if we have any data pending: the pipe writer has
// bytes waiting to written, or it has written data since the
// last time we called pipeWriter->waitForWrite().
bool pendingDataInPipe = pipeWriter && (pipeWriter->bytesToWrite() || pipeWriter->hadWritten());
// If we don't have pending data, and our write buffer is
// empty, we fail.
if (!pendingDataInPipe && writeBuffer.isEmpty())
return false;
// If we don't have pending data and we do have data in our
// write buffer, try to flush that data over to the pipe
// writer. Fail on error.
if (!pendingDataInPipe) {
if (!_q_canWrite())
return false;
}
// Wait for the pipe writer to acknowledge that it has
// written. This will succeed if either the pipe writer has
// already written the data, or if it manages to write data
// within the given timeout. If the write buffer was non-empty
// and the pipeWriter is now dead, that means _q_canWrite()
// destroyed the writer after it successfully wrote the last
// batch.
if (!pipeWriter || pipeWriter->waitForWrite(0))
return true;
// If we wouldn't write anything, check if we can read stdout.
if (bytesAvailableFromStdout() != 0) {
_q_canReadStandardOutput();
timer.resetIncrements();
}
// Check if we can read stderr.
if (bytesAvailableFromStderr() != 0) {
_q_canReadStandardError();
timer.resetIncrements();
}
// Check if the process died while reading.
if (!pid)
return false;
// Wait for the process to signal any change in its state,
// such as incoming data, or if the process died.
if (WaitForSingleObject(pid->hProcess, 0) == WAIT_OBJECT_0) {
_q_processDied();
return false;
}
// Only wait for as long as we've been asked.
if (timer.hasTimedOut())
break;
}
processError = QProcess::Timedout;
q->setErrorString(QProcess::tr("Process operation timed out"));
return false;
}
void QProcessPrivate::startProcess()
{
Q_Q(QProcess);
bool success = false;
if (pid) {
CloseHandle(pid->hThread);
CloseHandle(pid->hProcess);
delete pid;
pid = 0;
}
pid = new PROCESS_INFORMATION;
memset(pid, 0, sizeof(PROCESS_INFORMATION));
q->setProcessState(QProcess::Starting);
if (!createChannel(stdinChannel) ||
!createChannel(stdoutChannel) ||
!createChannel(stderrChannel))
return;
QString args = qt_create_commandline(program, arguments);
QByteArray envlist;
if (environment.d.constData())
envlist = qt_create_environment(environment.d.constData()->hash);
if (!nativeArguments.isEmpty()) {
if (!args.isEmpty())
args += QLatin1Char(' ');
args += nativeArguments;
}
#if defined QPROCESS_DEBUG
qDebug("Creating process");
qDebug(" program : [%s]", program.toLatin1().constData());
qDebug(" args : %s", args.toLatin1().constData());
qDebug(" pass environment : %s", environment.isEmpty() ? "no" : "yes");
#endif
// Forwarded channels must not set the CREATE_NO_WINDOW flag because this
// will render the stdout/stderr handles we're passing useless.
DWORD dwCreationFlags = (processChannelMode == QProcess::ForwardedChannels ? 0 : CREATE_NO_WINDOW);
dwCreationFlags |= CREATE_UNICODE_ENVIRONMENT;
STARTUPINFOW startupInfo = { sizeof( STARTUPINFO ), 0, 0, 0,
(ulong)CW_USEDEFAULT, (ulong)CW_USEDEFAULT,
(ulong)CW_USEDEFAULT, (ulong)CW_USEDEFAULT,
0, 0, 0,
STARTF_USESTDHANDLES,
0, 0, 0,
stdinChannel.pipe[0], stdoutChannel.pipe[1], stderrChannel.pipe[1]
};
success = CreateProcess(0, (wchar_t*)args.utf16(),
0, 0, TRUE, dwCreationFlags,
environment.isEmpty() ? 0 : envlist.data(),
workingDirectory.isEmpty() ? 0 : (wchar_t*)QDir::toNativeSeparators(workingDirectory).utf16(),
&startupInfo, pid);
if (!success) {
// Capture the error string before we do CloseHandle below
q->setErrorString(QProcess::tr("Process failed to start: %1").arg(qt_error_string()));
}
if (stdinChannel.pipe[0] != INVALID_Q_PIPE) {
CloseHandle(stdinChannel.pipe[0]);
stdinChannel.pipe[0] = INVALID_Q_PIPE;
}
if (stdoutChannel.pipe[1] != INVALID_Q_PIPE) {
CloseHandle(stdoutChannel.pipe[1]);
stdoutChannel.pipe[1] = INVALID_Q_PIPE;
}
if (stderrChannel.pipe[1] != INVALID_Q_PIPE) {
CloseHandle(stderrChannel.pipe[1]);
stderrChannel.pipe[1] = INVALID_Q_PIPE;
}
if (!success) {
cleanup();
processError = QProcess::FailedToStart;
emit q->error(processError);
q->setProcessState(QProcess::NotRunning);
return;
}
q->setProcessState(QProcess::Running);
// User can call kill()/terminate() from the stateChanged() slot
// so check before proceeding
if (!pid)
return;
if (threadData->eventDispatcher) {
processFinishedNotifier = new QWinEventNotifier(pid->hProcess, q);
QObject::connect(processFinishedNotifier, SIGNAL(activated(HANDLE)), q, SLOT(_q_processDied()));
processFinishedNotifier->setEnabled(true);
notifier = new QTimer(q);
QObject::connect(notifier, SIGNAL(timeout()), q, SLOT(_q_notified()));
notifier->start(NOTIFYTIMEOUT);
}
_q_startupNotification();
}
