hash_deleteentry.c

一个用在mips体系结构中的操作系统

/* 
 * Hash_DeleteEntry.c --
 *
 *	Source code for the Hash_DeleteEntry library procedure.
 *
 * Copyright 1988 Regents of the University of California
 * Permission to use, copy, modify, and distribute this
 * software and its documentation for any purpose and without
 * fee is hereby granted, provided that the above copyright
 * notice appear in all copies.  The University of California
 * makes no representations about the suitability of this
 * software for any purpose.  It is provided "as is" without
 * express or implied warranty.
 */

#ifndef lint
static char rcsid[] = "$Header: /hive/cvsroot/simulation/apps/unix/ethersim/common/Hash_DeleteEntry.c,v 1.1 1996/08/27 18:49:25 verghese Exp $ SPRITE (Berkeley)";
#endif not lint

#include <hash.h>
#include <list.h>
#include <stdlib.h>

/*
 * Utility procedures defined in other files:
 */
extern Hash_Entry *     HashChainSearch(Hash_Table *tablePtr, Address key, List_Links *hashList);
extern int              Hash(register Hash_Table *tablePtr, register char *key);


/*
 *---------------------------------------------------------
 *
 * Hash_DeleteEntry --
 *
 * 	Delete the given hash table entry and free memory associated with
 *	it.
 *
 * Results:
 *	None.
 *
 * Side Effects:
 *	Hash chain that entry lives in is modified and memory is freed.
 *
 *---------------------------------------------------------
 */

void
Hash_DeleteEntry(
    Hash_Table			*tablePtr,
    register	Hash_Entry	*hashEntryPtr
)
{
    if (hashEntryPtr != (Hash_Entry *) NULL) {
	List_Remove((List_Links *) hashEntryPtr);
	free((Address) hashEntryPtr);
	tablePtr->numEntries--;
    }
}