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/****************************************************************************
**
** Copyright (C) 2014 Digia Plc and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
** Author: Milian Wolff, KDAB (milian.wolff@kdab.com)
**
** This file is part of Qt Creator.
**
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and Digia. For licensing terms and
** conditions see http://qt.digia.com/licensing. For further information
** use the contact form at http://qt.digia.com/contact-us.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Digia gives you certain additional
** rights. These rights are described in the Digia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
****************************************************************************/
#include "outputgenerator.h"
#include <QAbstractSocket>
#include <QIODevice>
#include <QTextStream>
#include <QCoreApplication>
#include <QStringList>
#include <QDebug>
// Yes, this is ugly. But please don't introduce a libUtils dependency
// just to get rid of a single function.
#ifdef Q_OS_WIN
#include <windows.h>
void doSleep(int msec) { ::Sleep(msec); }
#else
#include <time.h>
#include <unistd.h>
void doSleep(int msec)
{
struct timespec ts = { msec / 1000, (msec % 1000) * 1000000 };
::nanosleep(&ts, NULL);
}
#endif
using namespace Valgrind::Fake;
OutputGenerator::OutputGenerator(QAbstractSocket *output, QIODevice *input) :
m_output(output),
m_input(input),
m_finished(false),
m_crash(false),
m_garbage(false),
m_wait(0)
{
Q_ASSERT(input->isOpen());
Q_ASSERT(input->isReadable());
m_timer.setSingleShot(true);
m_timer.start();
connect(&m_timer, SIGNAL(timeout()),
this, SLOT(writeOutput()));
}
void OutputGenerator::setCrashRandomly(bool enable)
{
m_crash = enable;
}
void OutputGenerator::setOutputGarbage(bool enable)
{
m_garbage = enable;
}
void OutputGenerator::setWait(uint seconds)
{
m_wait = seconds;
}
#include <iostream>
static bool blockingWrite(QIODevice *dev, const QByteArray &ba)
{
const qint64 toWrite = ba.size();
qint64 written = 0;
while (written < ba.size()) {
const qint64 n = dev->write(ba.constData() + written, toWrite - written);
if (n < 0)
return false;
written += n;
}
return true;
}
void OutputGenerator::produceRuntimeError()
{
if (m_crash) {
std::cerr << "Goodbye, cruel world" << std::endl;
int zero = 0; // hide the error at compile-time to avoid a compiler warning
int i = 1 / zero;
Q_UNUSED(i);
Q_ASSERT(false);
} else if (m_garbage) {
std::cerr << "Writing garbage" << std::endl;
blockingWrite(m_output, "<</GARBAGE = '\"''asdfaqre");
m_output->flush();
} else if (m_wait) {
qDebug() << "waiting in fake valgrind for " << m_wait << " seconds..." << endl;
doSleep(1000 * m_wait);
}
}
void OutputGenerator::writeOutput()
{
m_timer.setInterval(qrand() % 1000);
int lines = 0;
while (!m_input->atEnd()) {
qint64 lastPos = m_input->pos();
QByteArray line = m_input->readLine();
if (lines > 0 && !m_finished && line.contains("<error>")) {
if ((m_crash || m_garbage || m_wait) && qrand() % 10 == 1) {
produceRuntimeError();
m_timer.start();
return;
}
m_input->seek(lastPos);
m_timer.start();
return;
} else {
if (!m_finished && line.contains("<state>FINISHED</state>")) {
m_finished = true;
if (m_crash || m_garbage || m_wait) {
produceRuntimeError();
m_timer.start();
return;
}
}
if (!blockingWrite(m_output, line)) {
std::cerr << "Writing to socket failed: " << qPrintable(m_output->errorString()) << std::endl;
emit finished();
return;
}
m_output->flush();
++lines;
}
}
Q_ASSERT(m_input->atEnd());
while (m_output->bytesToWrite() > 0)
m_output->waitForBytesWritten(-1);
emit finished();
}
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