177 lines
5 KiB
C++
Executable file
177 lines
5 KiB
C++
Executable file
/******************************************************************************\
|
|
* Copyright (c) 2020
|
|
*
|
|
* Author(s):
|
|
* Peter L Jones
|
|
*
|
|
******************************************************************************
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify it under
|
|
* the terms of the GNU General Public License as published by the Free Software
|
|
* Foundation; either version 2 of the License, or (at your option) any later
|
|
* version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful, but WITHOUT
|
|
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
|
|
* FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
|
|
* details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License along with
|
|
* this program; if not, write to the Free Software Foundation, Inc.,
|
|
* 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
|
*
|
|
******************************************************************************
|
|
*
|
|
* This code contains some ideas derived from QCtrlSignals
|
|
* https://github.com/Skycoder42/QCtrlSignals.git
|
|
* - mostly the singleton and emitSignal code, plus some of the structure
|
|
* - virtually everything else is common knowledge across SourceForge answers
|
|
*
|
|
* BSD 3-Clause License
|
|
*
|
|
* Copyright (c) 2016, Felix Barz
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions are met:
|
|
*
|
|
* * Redistributions of source code must retain the above copyright notice, this
|
|
* list of conditions and the following disclaimer.
|
|
*
|
|
* * Redistributions in binary form must reproduce the above copyright notice,
|
|
* this list of conditions and the following disclaimer in the documentation
|
|
* and/or other materials provided with the distribution.
|
|
*
|
|
* * Neither the name of the copyright holder nor the names of its
|
|
* contributors may be used to endorse or promote products derived from
|
|
* this software without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
|
|
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
|
|
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
|
|
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
|
|
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
|
|
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
|
|
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
*
|
|
\******************************************************************************/
|
|
|
|
#pragma once
|
|
|
|
#include <QtCore/QObject>
|
|
#include <QtCore/QScopedPointer>
|
|
#include <QtCore/QHash>
|
|
#include <QtCore/QReadWriteLock>
|
|
#include <QtCore/QSet>
|
|
#include <QGlobalStatic>
|
|
|
|
#ifdef _WIN32
|
|
#include <qt_windows.h>
|
|
#include <QtCore/QCoreApplication>
|
|
#include <QtCore/QSemaphore>
|
|
#include <QtCore/QThread>
|
|
#include <QtCore/QDebug>
|
|
#else
|
|
#include <QSocketNotifier>
|
|
#include <QObject>
|
|
#include <QCoreApplication>
|
|
#include <csignal>
|
|
#include <signal.h>
|
|
#include <unistd.h>
|
|
#include <sys/socket.h>
|
|
#endif
|
|
|
|
class CSignalBase;
|
|
|
|
class CSignalHandler : public QObject
|
|
{
|
|
Q_OBJECT
|
|
|
|
friend class CSignalBase;
|
|
friend class CSignalHandlerSingleton;
|
|
|
|
public:
|
|
static CSignalHandler* getSingletonP();
|
|
|
|
bool emitSignal ( int );
|
|
|
|
#ifndef _WIN32
|
|
public slots:
|
|
void OnSocketNotify ( int socket );
|
|
#endif
|
|
|
|
signals:
|
|
void HandledSignal ( int sigNum );
|
|
|
|
private:
|
|
QScopedPointer<CSignalBase> pSignalBase;
|
|
|
|
explicit CSignalHandler();
|
|
~CSignalHandler() override;
|
|
};
|
|
|
|
// ----------------------------------------------------------
|
|
|
|
class CSignalBase
|
|
{
|
|
Q_DISABLE_COPY ( CSignalBase )
|
|
|
|
public:
|
|
static CSignalBase* withSignalHandler ( CSignalHandler* );
|
|
virtual ~CSignalBase();
|
|
|
|
virtual QReadWriteLock* getLock() const = 0;
|
|
|
|
QSet<int> sHandledSigNums;
|
|
|
|
protected:
|
|
CSignalBase ( CSignalHandler* );
|
|
|
|
CSignalHandler* pSignalHandler;
|
|
|
|
template <typename T>
|
|
static T *getSelf()
|
|
{
|
|
return static_cast<T*>( CSignalHandler::getSingletonP()->pSignalBase.data() );
|
|
}
|
|
|
|
};
|
|
|
|
#ifdef _WIN32
|
|
|
|
class CSignalWin : public CSignalBase
|
|
{
|
|
public:
|
|
CSignalWin ( CSignalHandler* );
|
|
~CSignalWin() override;
|
|
|
|
virtual QReadWriteLock* getLock() const override;
|
|
|
|
private:
|
|
mutable QReadWriteLock lock;
|
|
|
|
static BOOL WINAPI signalHandler ( _In_ DWORD );
|
|
};
|
|
|
|
#else
|
|
|
|
class CSignalUnix : public CSignalBase
|
|
{
|
|
public:
|
|
CSignalUnix ( CSignalHandler* );
|
|
~CSignalUnix() override;
|
|
|
|
virtual QReadWriteLock* getLock() const override;
|
|
|
|
private:
|
|
QSocketNotifier* socketNotifier = nullptr;
|
|
bool setSignalHandled ( int sigNum, bool state );
|
|
|
|
static int socketPair[2];
|
|
static void signalHandler ( int sigNum );
|
|
};
|
|
|
|
#endif
|