int
CacheCreate(evalCache * pc, unsigned int s)
{
#if CACHE_STATS
pc->cLookup = 0;
pc->cHit = 0;
pc->nAdds = 0;
#endif
if (s > 1u << 31)
return -1;
pc->size = s;
/* adjust size to smallest power of 2 GE to s */
while ((s & (s - 1)) != 0)
s &= (s - 1);
pc->size = (s < pc->size) ? 2 * s : s;
pc->hashMask = (pc->size >> 1) - 1;
pc->entries = (cacheNode *) malloc((pc->size / 2) * sizeof(*pc->entries));
if (pc->entries == 0)
return -1;
CacheFlush(pc);
return 0;
}
/*
* CacheDestroy
*
* Shutdown the cache.
*/
int CacheDestroy (Cache_t *cache)
{
CacheFlush( cache );
#if CACHE_DEBUG
/* Print cache report */
printf ("Cache Report:\n");
printf ("\tRead Requests: %d\n", cache->ReqRead);
printf ("\tWrite Requests: %d\n", cache->ReqWrite);
printf ("\tDisk Reads: %d\n", cache->DiskRead);
printf ("\tDisk Writes: %d\n", cache->DiskWrite);
printf ("\tSpans: %d\n", cache->Span);
#endif
/* Shutdown the LRU */
LRUDestroy (&cache->LRU);
/* I'm lazy, I'll come back to it :P */
return (EOK);
}
