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;
}
void QProcessPrivate::_q_notified()
{
notifier->stop();
if (!writeBuffer.isEmpty() && (!pipeWriter || pipeWriter->waitForWrite(0)))
_q_canWrite();
if (processState != QProcess::NotRunning)
notifier->start(NOTIFYTIMEOUT);
}
qint64 QLocalSocket::writeData(const char *data, qint64 maxSize)
{
Q_D(QLocalSocket);
if (!d->pipeWriter) {
d->pipeWriter = new QWindowsPipeWriter(d->handle, this);
connect(d->pipeWriter, SIGNAL(canWrite()), this, SLOT(_q_canWrite()));
connect(d->pipeWriter, SIGNAL(bytesWritten(qint64)), this, SIGNAL(bytesWritten(qint64)));
d->pipeWriter->start();
}
return d->pipeWriter->write(data, maxSize);
}
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;
}
void QProcessPrivate::_q_notified()
{
notifier->stop();
if (!writeBuffer.isEmpty() && (!pipeWriter || pipeWriter->waitForWrite(0)))
_q_canWrite();
if (bytesAvailableFromStdout())
_q_canReadStandardOutput();
if (bytesAvailableFromStderr())
_q_canReadStandardError();
if (processState != QProcess::NotRunning)
notifier->start(NOTIFYTIMEOUT);
}
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;
}
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;
}
