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// -*- mode: c++ -*-
//
// This file is part of libyacurs.
// Copyright (C) 2013 Rafael Ostertag
//
// 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 3 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, see
// <http://www.gnu.org/licenses/>.
//
//
// $Id: area.h 5021 2013-04-12 07:17:47Z rafisol $
#ifndef SIGACTION_H
#define SIGACTION_H 1
#include <signal.h>
#include "yacurstypes.h"
namespace YACURS {
namespace INTERNAL {
/**
* Convenience class for sigaction().
*
* Upon creation, it installs the new signal handler and saves
* the previous sigaction struct.
*
* Upon destruction, it restores the sigaction struct using
* the saved sigaction struct.
*/
class Sigaction {
private:
/**
* Saved sigaction.
*
* Third argument to sigaction().
*/
struct sigaction _saved_action;
struct sigaction _current_action;
/**
* Signal Number.
*/
int _signo;
public:
/**
* Constructor.
*
* @param signo signal
*
* @param hndlr pointer to function handling signal.
*
* @param mask signal mask to block during execution
* of hndlr.
*/
Sigaction(int signo, sig_handler hndlr, sigset_t& mask);
Sigaction(const Sigaction&) = delete;
Sigaction& operator=(const Sigaction&)=delete;
Sigaction(Sigaction&&) = delete;
Sigaction& operator=(Sigaction&&)=delete;
/**
* Restores sigaction.
*
* Restores signal action to the saved state upon
* invocation.
*/
~Sigaction();
/**
* Get the signal.
*
* @returns the signal.
*/
int signo() const { return _signo; }
/**
* Set the signal again
*
* Calls sigaction with the parameters received upon
* initialization.
*/
void reset() const;
};
} // namespace INTERNAL
} // namespace YACURS
#endif // SIGACTION_H
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