rem: return ns_malloc(len);
add: Cache *cachePtr = (Cache *) cache;  if (cachePtr->pool == NULL) { Ns_PoolCreate(cachePtr->name); } return Ns_PoolAlloc(cachePtr->pool, len);
context: Ns_CacheMalloc(Ns_Cache *cache, size_t len){    return ns_malloc(len);}