Function cache_get_base

libCacheSim/cache/cache.c:223–252

* @brief this function is called by all eviction algorithms * it performs the following logic * * ``` * if obj in cache: * update_metadata * return true * else: * if cache does not have enough space: * evict until it has space to insert * insert the object * return false * ``` * * @param cache * @param req * @return true if cache hit, false if cache miss */

 * @return true if cache hit, false if cache miss
 */
bool cache_get_base(cache_t *cache, const request_t *req) {
  cache->n_req += 1;

  VERBOSE("******* %s req %ld, obj %ld, obj_size %ld, cache size %ld/%ld\n", cache->cache_name, cache->n_req,
          req->obj_id, req->obj_size, cache->get_occupied_byte(cache), cache->cache_size);

  cache_obj_t *obj = cache->find(cache, req, true);
  bool hit = (obj != NULL);

  if (cache->admissioner && cache->admissioner->update) {
    cache->admissioner->update(cache->admissioner, req, cache->cache_size);
  }

  if (hit) {
    VVERBOSE("req %ld, obj %ld --- cache hit\n", cache->n_req, req->obj_id);
  } else if (!cache->can_insert(cache, req)) {
    VVERBOSE("req %ld, obj %ld --- cache miss cannot insert\n", cache->n_req, req->obj_id);
  } else {
    while (cache->get_occupied_byte(cache) + req->obj_size + cache->obj_md_size > cache->cache_size) {
      cache->evict(cache, req);
    }
    cache->insert(cache, req);
  }

  if (cache->prefetcher && cache->prefetcher->prefetch) {
    cache->prefetcher->prefetch(cache, req);
  }

  return hit;
}

/**
 * @brief this function is called by all caches to