etc.cpp

一套linux下的C++开发库

/***************************************************************************
                          etc.cpp  -  description
                             -------------------
    begin                : Fri Jul 20 2001
    copyright            : (C) 2001 by Mark
    email                : [e-mail]
 ***************************************************************************/

/***************************************************************************
 *                                                                         *
 *   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.                                   *
 *                                                                         *
 ***************************************************************************/


#include <errno.h>

#include "exception.h"
#include "etc.h"


SigFunc* Signal(int iSigNo, SigFunc* func, bool bRestart)
{
	struct sigaction act, oact;
	
	act.sa_handler = func;
	sigemptyset(&act.sa_mask);
	act.sa_flags = 0;
	if (bRestart)
	{
#ifdef SA_RESTART	
		act.sa_flags |= SA_RESTART;
#endif	
	}
	else
	{
#ifdef SA_INTERRUPT
		act.sa_flags |= SA_INTERRUPT;
#endif
	}
	
	if (sigaction(iSigNo, &act, &oact) < 0)
		throw CException(strerror(errno), __FILE__, __LINE__);
		
	return oact.sa_handler;
}


pid_t Fork()
{
	pid_t tPId = fork();
	if (tPId < 0)
		throw CException(strerror(errno), __FILE__, __LINE__);
		
	return tPId;
}


int Kill(pid_t tPId, int iSigNo)
{
	int iRet = kill(tPId, iSigNo);
	if (iRet < 0)
		throw CException(strerror(errno), __FILE__, __LINE__);
		
	return iRet;
}


int Sigprocmask(int iHow, const sigset_t* pNewSet, sigset_t* pOldSet)
{
	int iRet;
	if ((iRet = sigprocmask(iHow, pNewSet, pOldSet)) < 0)
		throw CException(strerror(errno), __FILE__, __LINE__);
		
	return iRet;
}