Chloe M.
70 lines
1.2 KiB
C
70 lines
1.2 KiB
C
/*
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* Copyright (c) 2026, Chloe M.
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* Provided under the BSD-3 clause.
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*
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* Description: Object manager cache
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* Author: Chloe M.
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*/
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#include <ob/cache.h>
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#include <string.h>
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VOID
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ObReclaimToCache(OBJECT_CACHE *Cache, ST_OBJECT *Object)
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{
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ST_OBJECT *Last;
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if (Cache == NULL || Object == NULL) {
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return;
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}
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/* Can only reclaim when refcount hits zero */
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if (Object->RefCount != 0) {
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return;
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}
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/* Insert the object */
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Object->CacheNext = NULL;
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if (Cache->First == NULL || Cache->Last == NULL) {
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Cache->First = Object;
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Cache->Last = Object;
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} else {
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Last = Cache->Last;
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Last->CacheNext = Object;
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Cache->Last = Object;
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}
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++Cache->EntryCount;
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}
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VOID
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ObInitCache(OBJECT_CACHE *Cache)
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{
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if (Cache == NULL) {
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return;
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}
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Cache->EntryCount = 0;
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Cache->First = NULL;
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Cache->Last = NULL;
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}
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ST_OBJECT *
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ObPopFromCache(OBJECT_CACHE *Cache)
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{
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ST_OBJECT *First;
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if (Cache == NULL) {
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return NULL;
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}
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First = Cache->First;
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if (First == NULL) {
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return NULL;
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}
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Cache->First = First->CacheNext;
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RtlMemSet(First, 0, sizeof(*First));
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return First;
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}
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