diff options
Diffstat (limited to 'src/corelib/io/qprocess.cpp')
| -rw-r--r-- | src/corelib/io/qprocess.cpp | 164 |
1 files changed, 75 insertions, 89 deletions
diff --git a/src/corelib/io/qprocess.cpp b/src/corelib/io/qprocess.cpp index 9f9cba81ab..b03e96d0f6 100644 --- a/src/corelib/io/qprocess.cpp +++ b/src/corelib/io/qprocess.cpp @@ -1,6 +1,7 @@ /**************************************************************************** ** ** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies). +** Copyright (C) 2014 Intel Corporation ** Contact: http://www.qt-project.org/legal ** ** This file is part of the QtCore module of the Qt Toolkit. @@ -819,9 +820,6 @@ QProcessPrivate::QProcessPrivate() emittedBytesWritten = false; #ifdef Q_OS_WIN notifier = 0; - stdoutReader = 0; - stderrReader = 0; - pipeWriter = 0; processFinishedNotifier = 0; #endif // Q_OS_WIN #ifdef Q_OS_UNIX @@ -889,9 +887,9 @@ void QProcessPrivate::cleanup() notifier = 0; } #endif - destroyChannel(&stdoutChannel); - destroyChannel(&stderrChannel); - destroyChannel(&stdinChannel); + closeChannel(&stdoutChannel); + closeChannel(&stderrChannel); + closeChannel(&stdinChannel); destroyPipe(childStartedPipe); destroyPipe(deathPipe); #ifdef Q_OS_UNIX @@ -901,49 +899,63 @@ void QProcessPrivate::cleanup() /*! \internal + Returns true if we emitted readyRead(). */ -bool QProcessPrivate::_q_canReadStandardOutput() +bool QProcessPrivate::tryReadFromChannel(Channel *channel) { Q_Q(QProcess); - qint64 available = bytesAvailableFromStdout(); - if (available == 0) { - if (stdoutChannel.notifier) - stdoutChannel.notifier->setEnabled(false); - destroyChannel(&stdoutChannel); -#if defined QPROCESS_DEBUG - qDebug("QProcessPrivate::canReadStandardOutput(), 0 bytes available"); -#endif + if (channel->pipe[0] == INVALID_Q_PIPE) return false; - } - char *ptr = outputReadBuffer.reserve(available); - qint64 readBytes = readFromStdout(ptr, available); + qint64 available = bytesAvailableInChannel(channel); + if (available == 0) + available = 1; // always try to read at least one byte + + char *ptr = channel->buffer.reserve(available); + qint64 readBytes = readFromChannel(channel, ptr, available); + if (readBytes <= 0) + channel->buffer.chop(available); + if (readBytes == -2) { + // EWOULDBLOCK + return false; + } if (readBytes == -1) { processError = QProcess::ReadError; q->setErrorString(QProcess::tr("Error reading from process")); emit q->error(processError); #if defined QPROCESS_DEBUG - qDebug("QProcessPrivate::canReadStandardOutput(), failed to read from the process"); + qDebug("QProcessPrivate::tryReadFromChannel(%d), failed to read from the process", channel - &stdinChannel); +#endif + return false; + } + if (readBytes == 0) { + // EOF + if (channel->notifier) + channel->notifier->setEnabled(false); + closeChannel(channel); +#if defined QPROCESS_DEBUG + qDebug("QProcessPrivate::tryReadFromChannel(%d), 0 bytes available", channel - &stdinChannel); #endif return false; } #if defined QPROCESS_DEBUG - qDebug("QProcessPrivate::canReadStandardOutput(), read %d bytes from the process' output", + qDebug("QProcessPrivate::tryReadFromChannel(%d), read %d bytes from the process' output", channel - &stdinChannel int(readBytes)); #endif - if (stdoutChannel.closed) { - outputReadBuffer.chop(readBytes); + if (channel->closed) { + channel->buffer.chop(readBytes); return false; } - outputReadBuffer.chop(available - readBytes); + channel->buffer.chop(available - readBytes); bool didRead = false; + bool isStdout = channel == &stdoutChannel; if (readBytes == 0) { - if (stdoutChannel.notifier) - stdoutChannel.notifier->setEnabled(false); - } else if (processChannel == QProcess::StandardOutput) { + if (channel->notifier) + channel->notifier->setEnabled(false); + } else if ((processChannel == QProcess::StandardOutput) == isStdout) { didRead = true; if (!emittedReadyRead) { emittedReadyRead = true; @@ -951,53 +963,27 @@ bool QProcessPrivate::_q_canReadStandardOutput() emittedReadyRead = false; } } - emit q->readyReadStandardOutput(QProcess::QPrivateSignal()); + if (isStdout) + emit q->readyReadStandardOutput(QProcess::QPrivateSignal()); + else + emit q->readyReadStandardError(QProcess::QPrivateSignal()); return didRead; } /*! \internal */ -bool QProcessPrivate::_q_canReadStandardError() +bool QProcessPrivate::_q_canReadStandardOutput() { - Q_Q(QProcess); - qint64 available = bytesAvailableFromStderr(); - if (available == 0) { - if (stderrChannel.notifier) - stderrChannel.notifier->setEnabled(false); - destroyChannel(&stderrChannel); - return false; - } - - char *ptr = errorReadBuffer.reserve(available); - qint64 readBytes = readFromStderr(ptr, available); - if (readBytes == -1) { - processError = QProcess::ReadError; - q->setErrorString(QProcess::tr("Error reading from process")); - emit q->error(processError); - return false; - } - if (stderrChannel.closed) { - errorReadBuffer.chop(readBytes); - return false; - } - - errorReadBuffer.chop(available - readBytes); + return tryReadFromChannel(&stdoutChannel); +} - bool didRead = false; - if (readBytes == 0) { - if (stderrChannel.notifier) - stderrChannel.notifier->setEnabled(false); - } else if (processChannel == QProcess::StandardError) { - didRead = true; - if (!emittedReadyRead) { - emittedReadyRead = true; - emit q->readyRead(); - emittedReadyRead = false; - } - } - emit q->readyReadStandardError(QProcess::QPrivateSignal()); - return didRead; +/*! + \internal +*/ +bool QProcessPrivate::_q_canReadStandardError() +{ + return tryReadFromChannel(&stderrChannel); } /*! @@ -1009,17 +995,17 @@ bool QProcessPrivate::_q_canWrite() if (stdinChannel.notifier) stdinChannel.notifier->setEnabled(false); - if (writeBuffer.isEmpty()) { + if (stdinChannel.buffer.isEmpty()) { #if defined QPROCESS_DEBUG qDebug("QProcessPrivate::canWrite(), not writing anything (empty write buffer)."); #endif return false; } - qint64 written = writeToStdin(writeBuffer.readPointer(), - writeBuffer.nextDataBlockSize()); + qint64 written = writeToStdin(stdinChannel.buffer.readPointer(), + stdinChannel.buffer.nextDataBlockSize()); if (written < 0) { - destroyChannel(&stdinChannel); + closeChannel(&stdinChannel); processError = QProcess::WriteError; q->setErrorString(QProcess::tr("Error writing to process")); emit q->error(processError); @@ -1031,16 +1017,16 @@ bool QProcessPrivate::_q_canWrite() #endif if (written != 0) { - writeBuffer.free(written); + stdinChannel.buffer.free(written); if (!emittedBytesWritten) { emittedBytesWritten = true; emit q->bytesWritten(written); emittedBytesWritten = false; } } - if (stdinChannel.notifier && !writeBuffer.isEmpty()) + if (stdinChannel.notifier && !stdinChannel.buffer.isEmpty()) stdinChannel.notifier->setEnabled(true); - if (writeBuffer.isEmpty() && stdinChannel.closed) + if (stdinChannel.buffer.isEmpty() && stdinChannel.closed) closeWriteChannel(); return true; } @@ -1163,7 +1149,7 @@ void QProcessPrivate::closeWriteChannel() // instead. flushPipeWriter(); #endif - destroyChannel(&stdinChannel); + closeChannel(&stdinChannel); } /*! @@ -1308,10 +1294,10 @@ void QProcess::setReadChannel(ProcessChannel channel) QByteArray buf = d->buffer.readAll(); if (d->processChannel == QProcess::StandardOutput) { for (int i = buf.size() - 1; i >= 0; --i) - d->outputReadBuffer.ungetChar(buf.at(i)); + d->stdoutChannel.buffer.ungetChar(buf.at(i)); } else { for (int i = buf.size() - 1; i >= 0; --i) - d->errorReadBuffer.ungetChar(buf.at(i)); + d->stderrChannel.buffer.ungetChar(buf.at(i)); } } d->processChannel = channel; @@ -1359,7 +1345,7 @@ void QProcess::closeWriteChannel() { Q_D(QProcess); d->stdinChannel.closed = true; // closing - if (d->writeBuffer.isEmpty()) + if (d->stdinChannel.buffer.isEmpty()) d->closeWriteChannel(); } @@ -1589,8 +1575,8 @@ bool QProcess::canReadLine() const { Q_D(const QProcess); const QRingBuffer *readBuffer = (d->processChannel == QProcess::StandardError) - ? &d->errorReadBuffer - : &d->outputReadBuffer; + ? &d->stderrChannel.buffer + : &d->stdoutChannel.buffer; return readBuffer->canReadLine() || QIODevice::canReadLine(); } @@ -1618,8 +1604,8 @@ bool QProcess::atEnd() const { Q_D(const QProcess); const QRingBuffer *readBuffer = (d->processChannel == QProcess::StandardError) - ? &d->errorReadBuffer - : &d->outputReadBuffer; + ? &d->stderrChannel.buffer + : &d->stdoutChannel.buffer; return QIODevice::atEnd() && (!isOpen() || readBuffer->isEmpty()); } @@ -1636,8 +1622,8 @@ qint64 QProcess::bytesAvailable() const { Q_D(const QProcess); const QRingBuffer *readBuffer = (d->processChannel == QProcess::StandardError) - ? &d->errorReadBuffer - : &d->outputReadBuffer; + ? &d->stderrChannel.buffer + : &d->stdoutChannel.buffer; #if defined QPROCESS_DEBUG qDebug("QProcess::bytesAvailable() == %i (%s)", readBuffer->size(), (d->processChannel == QProcess::StandardError) ? "stderr" : "stdout"); @@ -1650,7 +1636,7 @@ qint64 QProcess::bytesAvailable() const qint64 QProcess::bytesToWrite() const { Q_D(const QProcess); - qint64 size = d->writeBuffer.size(); + qint64 size = d->stdinChannel.buffer.size(); #ifdef Q_OS_WIN size += d->pipeWriterBytesToWrite(); #endif @@ -1897,8 +1883,8 @@ qint64 QProcess::readData(char *data, qint64 maxlen) if (!maxlen) return 0; QRingBuffer *readBuffer = (d->processChannel == QProcess::StandardError) - ? &d->errorReadBuffer - : &d->outputReadBuffer; + ? &d->stderrChannel.buffer + : &d->stdoutChannel.buffer; if (maxlen == 1 && !readBuffer->isEmpty()) { int c = readBuffer->getChar(); @@ -1961,7 +1947,7 @@ qint64 QProcess::writeData(const char *data, qint64 len) } if (len == 1) { - d->writeBuffer.putChar(*data); + d->stdinChannel.buffer.putChar(*data); if (d->stdinChannel.notifier) d->stdinChannel.notifier->setEnabled(true); #if defined QPROCESS_DEBUG @@ -1971,7 +1957,7 @@ qint64 QProcess::writeData(const char *data, qint64 len) return 1; } - char *dest = d->writeBuffer.reserve(len); + char *dest = d->stdinChannel.buffer.reserve(len); memcpy(dest, data, len); if (d->stdinChannel.notifier) d->stdinChannel.notifier->setEnabled(true); @@ -2112,8 +2098,8 @@ void QProcessPrivate::start(QIODevice::OpenMode mode) qDebug() << "QProcess::start(" << program << ',' << arguments << ',' << mode << ')'; #endif - outputReadBuffer.clear(); - errorReadBuffer.clear(); + stdoutChannel.buffer.clear(); + stderrChannel.buffer.clear(); if (stdinChannel.type != QProcessPrivate::Channel::Normal) mode &= ~QIODevice::WriteOnly; // not open for writing |