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/* obj.c
*
* This file implements a generic object "class". All other classes can
* use the service of this base class here to include auto-destruction and
* other capabilities in a generic manner.
*
* File begun on 2008-01-04 by RGerhards
*
* Copyright 2008 Rainer Gerhards and Adiscon GmbH.
*
* This file is part of rsyslog.
*
* Rsyslog 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.
*
* Rsyslog 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 Rsyslog. If not, see <http://www.gnu.org/licenses/>.
*
* A copy of the GPL can be found in the file "COPYING" in this distribution.
*/
#include "config.h"
#include <stdlib.h>
#include <string.h>
#include <assert.h>
#include "rsyslog.h"
#include "obj.h"
/* static data */
/* methods */
/* This is a dummy method to be used when a standard method has not been
* implemented by an object. Having it allows us to simply call via the
* jump table without any NULL pointer checks - which gains quite
* some performance. -- rgerhards, 2008-01-04
*/
static rsRetVal objInfoNotImplementedDummy(void __attribute__((unused)) *pThis)
{
return RS_RET_NOT_IMPLEMENTED;
}
/* construct an object Info object. Each class shall do this on init. The
* resulting object shall be cached during the lifetime of the class and each
* object shall receive a reference. A constructor MUST be provided for all
* objects, thus it is in the parameter list.
* pszName must point to constant pool memory. It is never freed.
*/
rsRetVal objInfoConstruct(objInfo_t **ppThis, objID_t objID, uchar *pszName, rsRetVal (*pDestruct)(void *))
{
DEFiRet;
int i;
objInfo_t *pThis;
assert(ppThis != NULL);
assert(pDestruct != NULL);
if((pThis = calloc(1, sizeof(objInfo_t))) == NULL)
ABORT_FINALIZE(RS_RET_OUT_OF_MEMORY);
pThis->pszName = pszName;
pThis->objID = objID;
for(i = 0 ; i < OBJ_NUM_METHODS ; ++i) {
pThis->objMethods[i] = objInfoNotImplementedDummy;
}
*ppThis = pThis;
finalize_it:
return iRet;
}
/* set a method handler */
rsRetVal objInfoSetMethod(objInfo_t *pThis, objMethod_t objMethod, rsRetVal (*pHandler)(void*))
{
assert(pThis != NULL);
assert(objMethod > 0 && objMethod < OBJ_NUM_METHODS);
pThis->objMethods[objMethod] = pHandler;
return RS_RET_OK;
}
/*
* vi:set ai:
*/
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