#include "sjeng.h"
#include "protos.h"
#include "extvars.h"
typedef struct
{
unsigned long stored_hash;
unsigned long hold_hash;
unsigned int score;
} ECacheType;
ECacheType *ECache;
unsigned long ECacheProbes;
unsigned long ECacheHits;
void storeECache(long int score)
{
int index;
index = hash % ECacheSize;
ECache[index].stored_hash = hash;
ECache[index].hold_hash = hold_hash;
ECache[index].score = score;
}
void checkECache(long int *score, int *in_cache)
{
int index;
ECacheProbes++;
index = hash % ECacheSize;
if(ECache[index].stored_hash == hash &&
ECache[index].hold_hash == hold_hash)
{
ECacheHits++;
*in_cache = 1;
*score = ECache[index].score;
}
}
void reset_ecache(void)
{
memset(ECache, 0, sizeof(ECache));
return;
}
void alloc_ecache(void)
{
ECache = (ECacheType*)malloc(sizeof(ECacheType)*ECacheSize);
if (ECache == NULL)
{
printf("Out of memory allocating ECache.\n");
exit(EXIT_FAILURE);
}
printf("Allocated %lu eval cache entries, totalling %lu bytes.\n",
ECacheSize, sizeof(ECacheType)*ECacheSize);
return;
}
void free_ecache(void)
{
free(ECache);
return;
}