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/* Definition of the linkedlist object.
*
* Copyright 2007 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.
*/
#ifndef LINKEDLIST_H_INCLUDED
#define LINKEDLIST_H_INCLUDED
/* this is a single entry for a parse routine. It describes exactly
* one entry point/handler.
* The short name is cslch (Configfile SysLine CommandHandler)
*/
struct llElt_s { /* config file sysline parse entry */
struct llElt_s *pNext;
void *pKey; /* key for this element */
void *pData; /* user-supplied data pointer */
};
typedef struct llElt_s llElt_t;
/* this is the list of known configuration commands with pointers to
* their handlers.
* The short name is cslc (Configfile SysLine Command)
*/
struct linkedList_s { /* config file sysline parse entry */
int iNumElts; /* number of elements in list */
rsRetVal (*pEltDestruct)(void*pData); /* destructor for user pointer in llElt_t's */
rsRetVal (*pKeyDestruct)(void*pKey); /* destructor for key pointer in llElt_t's */
int (*cmpOp)(void*, void*); /* pointer to key compare operation function, retval like strcmp */
void *pKey; /* the list key (searchable, if set) */
llElt_t *pRoot; /* list root */
llElt_t *pLast; /* list tail */
};
typedef struct linkedList_s linkedList_t;
typedef llElt_t* linkedListCookie_t; /* this type avoids exposing internals and keeps us flexible */
/* prototypes */
rsRetVal llInit(linkedList_t *pThis, rsRetVal (*pEltDestructor)(), rsRetVal (*pKeyDestructor)(void*), int (*pCmpOp)());
rsRetVal llDestroy(linkedList_t *pThis);
rsRetVal llDestroyRootElt(linkedList_t *pThis);
rsRetVal llGetNextElt(linkedList_t *pThis, linkedListCookie_t *ppElt, void **ppUsr);
rsRetVal llAppend(linkedList_t *pThis, void *pKey, void *pData);
rsRetVal llFind(linkedList_t *pThis, void *pKey, void **ppData);
rsRetVal llGetKey(llElt_t *pThis, void *ppData);
rsRetVal llGetNumElts(linkedList_t *pThis, int *piCnt);
rsRetVal llExecFunc(linkedList_t *pThis, rsRetVal (*pFunc)(void*, void*), void* pParam);
rsRetVal llFindAndDelete(linkedList_t *pThis, void *pKey);
/* use the macro below to define a function that will be executed by
* llExecFunc()
*/
#define DEFFUNC_llExecFunc(funcName)\
static rsRetVal funcName(void __attribute__((unused)) *pData, void __attribute__((unused)) *pParam)
#endif /* #ifndef LINKEDLIST_H_INCLUDED */
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