175 lines
4.3 KiB
C++
175 lines
4.3 KiB
C++
///////////////////////////////////////////////////////////////////////////////
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// LameXP - Audio Encoder Front-End
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// Copyright (C) 2004-2017 LoRd_MuldeR <MuldeR2@GMX.de>
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//
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// This program is free software; you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation; either version 2 of the License, or
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// (at your option) any later version, but always including the *additional*
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// restrictions defined in the "License.txt" file.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License along
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// with this program; if not, write to the Free Software Foundation, Inc.,
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// 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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//
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// http://www.gnu.org/licenses/gpl-2.0.txt
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///////////////////////////////////////////////////////////////////////////////
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#include "Tool_Abstract.h"
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//Internal
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#include "Global.h"
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//MUtils
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#include <MUtils/Global.h>
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#include <MUtils/OSSupport.h>
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#include <MUtils/JobObject.h>
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//Qt
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#include <QProcess>
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#include <QMutex>
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#include <QMutexLocker>
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#include <QProcessEnvironment>
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#include <QDir>
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#include <QElapsedTimer>
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/*
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* Static Objects
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*/
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QScopedPointer<MUtils::JobObject> AbstractTool::s_jobObjectInstance;
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QScopedPointer<QElapsedTimer> AbstractTool::s_startProcessTimer;
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/*
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* Synchronization
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*/
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QMutex AbstractTool::s_startProcessMutex;
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QMutex AbstractTool::s_createObjectMutex;
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/*
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* Ref Counter
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*/
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quint64 AbstractTool::s_referenceCounter = 0ui64;
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/*
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* Const
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*/
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static const qint64 START_DELAY = 64i64; //in milliseconds
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/*
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* Constructor
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*/
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AbstractTool::AbstractTool(void)
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:
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m_firstLaunch(true)
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{
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QMutexLocker lock(&s_createObjectMutex);
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if(s_referenceCounter++ == 0)
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{
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s_jobObjectInstance.reset(new MUtils::JobObject());
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s_startProcessTimer.reset(new QElapsedTimer());
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if(!MUtils::OS::setup_timer_resolution())
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{
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qWarning("Failed to setup system timer resolution!");
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}
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}
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}
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/*
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* Destructor
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*/
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AbstractTool::~AbstractTool(void)
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{
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QMutexLocker lock(&s_createObjectMutex);
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if(--s_referenceCounter == 0)
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{
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s_jobObjectInstance.reset(NULL);
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s_startProcessTimer.reset(NULL);
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if(!MUtils::OS::reset_timer_resolution())
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{
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qWarning("Failed to reset system timer resolution!");
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}
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}
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}
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/*
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* Initialize and launch process object
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*/
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bool AbstractTool::startProcess(QProcess &process, const QString &program, const QStringList &args, const QString &workingDir)
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{
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QMutexLocker lock(&s_startProcessMutex);
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if((!s_startProcessTimer.isNull()) && s_startProcessTimer->isValid())
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{
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qint64 elapsed = s_startProcessTimer->elapsed();
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while(elapsed < START_DELAY)
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{
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lock.unlock();
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MUtils::OS::sleep_ms((size_t)(START_DELAY - elapsed));
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lock.relock();
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elapsed = s_startProcessTimer->elapsed();
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}
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}
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emit messageLogged(commandline2string(program, args) + "\n");
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MUtils::init_process(process, workingDir.isEmpty() ? QFileInfo(program).absolutePath() : workingDir);
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process.start(program, args);
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if(process.waitForStarted())
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{
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if(!s_jobObjectInstance.isNull())
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{
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if(!s_jobObjectInstance->addProcessToJob(&process))
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{
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qWarning("Failed to assign process to job object!");
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}
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}
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MUtils::OS::change_process_priority(&process, -1);
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if(m_firstLaunch)
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{
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emit statusUpdated(0);
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m_firstLaunch = false;
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}
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s_startProcessTimer->start();
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return true;
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}
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emit messageLogged("Process creation has failed :-(");
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QString errorMsg= process.errorString().trimmed();
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if(!errorMsg.isEmpty()) emit messageLogged(errorMsg);
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process.kill();
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process.waitForFinished(-1);
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s_startProcessTimer->start();
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return false;
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}
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/*
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* Convert program arguments to single string
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*/
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QString AbstractTool::commandline2string(const QString &program, const QStringList &arguments)
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{
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QString commandline = (program.contains(' ') ? QString("\"%1\"").arg(program) : program);
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for(int i = 0; i < arguments.count(); i++)
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{
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commandline += (arguments.at(i).contains(' ') ? QString(" \"%1\"").arg(arguments.at(i)) : QString(" %1").arg(arguments.at(i)));
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}
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return commandline;
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}
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