fis-gtm/sr_port/cache_cleanup.c

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/****************************************************************
* *
* Copyright 2001, 2011 Fidelity Information Services, Inc *
* *
* This source code contains the intellectual property *
* of its copyright holder(s), and is made available *
* under a license. If you do not know the terms of *
* the license, please stop and do not read further. *
* *
****************************************************************/
#include "mdef.h"
#include "objlabel.h"
#include "cache.h"
#include "hashtab_objcode.h"
2024-07-19 11:43:27 -04:00
#include <rtnhdr.h>
#include "stack_frame.h"
#include "cache_cleanup.h"
GBLREF hash_table_objcode cache_table;
GBLREF int indir_cache_mem_size;
void cache_cleanup(stack_frame *sf)
{
ihdtyp *irtnhdr;
cache_entry *csp;
INTPTR_T *vp;
boolean_t deleted;
assert(sf->ctxt);
vp = (INTPTR_T *)sf->ctxt;
vp--;
if ((GTM_OMAGIC << 16) + OBJ_LABEL == *vp) /* Validate backward linkage */
{ /* Frame is one of ours */
vp--;
irtnhdr = (ihdtyp *)((char *)vp + *vp);
csp = irtnhdr->indce;
assert(NULL != csp);
assert(0 < csp->refcnt);
csp->refcnt--; /* This usage of this cache entry is done */
/* We want to keep the entry around with the hope that it will be accessed again.
* When we keep too many entries or entries are using too much memory cache_put will call cache_table_rebuild()
* to make space removing elements with csp->refcnt == 0 and csp->zb_refcnt == 0
*/
} else
GTMASSERT; /* Not sure when this could happen */
}