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/****************************************************************************
**
** Copyright (C) 2016 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** 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 The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3 as published by the Free Software
** Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT
** included in the packaging of this file. Please review the following
** information to ensure the GNU General Public License requirements will
** be met: https://www.gnu.org/licenses/gpl-3.0.html.
**
****************************************************************************/
#include "reaper.h"
#include "reaper_p.h"
#include <utils/qtcprocess.h>
#include <utils/algorithm.h>
#include <utils/qtcassert.h>
#include <QThread>
namespace Core {
namespace Internal {
static ReaperPrivate *d = nullptr;
namespace {
void killProcess(QProcess *process)
{
if (auto qtcProcess = qobject_cast<Utils::QtcProcess*>(process))
qtcProcess->kill();
else
process->kill();
}
void terminateProcess(QProcess *process)
{
if (auto qtcProcess = qobject_cast<Utils::QtcProcess*>(process))
qtcProcess->terminate();
else
process->terminate();
}
} // namespace
ProcessReaper::ProcessReaper(QProcess *p, int timeoutMs) : m_process(p)
{
d->m_reapers.append(this);
m_iterationTimer.setInterval(timeoutMs);
m_iterationTimer.setSingleShot(true);
connect(&m_iterationTimer, &QTimer::timeout, this, &ProcessReaper::nextIteration);
QTimer::singleShot(0, this, &ProcessReaper::nextIteration);
m_futureInterface.reportStarted();
}
ProcessReaper::~ProcessReaper()
{
d->m_reapers.removeOne(this);
}
int ProcessReaper::timeoutMs() const
{
const int remaining = m_iterationTimer.remainingTime();
if (remaining < 0)
return m_iterationTimer.interval();
m_iterationTimer.stop();
return remaining;
}
bool ProcessReaper::isFinished() const
{
return !m_process;
}
void ProcessReaper::nextIteration()
{
QProcess::ProcessState state = m_process ? m_process->state() : QProcess::NotRunning;
if (state == QProcess::NotRunning || m_emergencyCounter > 5) {
delete m_process;
m_process = nullptr;
m_futureInterface.reportFinished();
return;
}
if (state == QProcess::Starting) {
if (m_lastState == QProcess::Starting)
killProcess(m_process);
} else if (state == QProcess::Running) {
if (m_lastState == QProcess::Running)
killProcess(m_process);
else
terminateProcess(m_process);
}
m_lastState = state;
m_iterationTimer.start();
++m_emergencyCounter;
}
ReaperPrivate::ReaperPrivate()
{
d = this;
}
ReaperPrivate::~ReaperPrivate()
{
while (!m_reapers.isEmpty()) {
int alreadyWaited = 0;
QList<ProcessReaper *> toDelete;
// push reapers along:
foreach (ProcessReaper *pr, m_reapers) {
const int timeoutMs = pr->timeoutMs();
if (alreadyWaited < timeoutMs) {
const unsigned long toSleep = static_cast<unsigned long>(timeoutMs - alreadyWaited);
QThread::msleep(toSleep);
alreadyWaited += toSleep;
}
pr->nextIteration();
if (pr->isFinished())
toDelete.append(pr);
}
// Clean out reapers that finished in the meantime
qDeleteAll(toDelete);
toDelete.clear();
}
d = nullptr;
}
} // namespace Internal
namespace Reaper {
void reap(QProcess *process, int timeoutMs)
{
if (!process)
return;
QTC_ASSERT(Internal::d, return);
new Internal::ProcessReaper(process, timeoutMs);
}
} // namespace Reaper
} // namespace Core
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