The current resize function works by creating a new, larger table and then iterating through the old table, calling hash_table_insert for each element. This re-hashes every key and involves a copy and destroy cycle for every key and value, leading to unnecessary memory allocations and copies (malloc/memcpy/free).
The resize implementation can be made more efficient by directly transferring ownership of the key and value pointers from the old entries array to the new one, without calling the copy/destroy handlers. The re-hashing would still be necessary to find the new bucket index, but the expensive data copying can be avoided.
The current
resizefunction works by creating a new, larger table and then iterating through the old table, callinghash_table_insertfor each element. This re-hashes every key and involves acopyanddestroycycle for every key and value, leading to unnecessary memory allocations and copies (malloc/memcpy/free).The
resizeimplementation can be made more efficient by directly transferring ownership of the key and value pointers from the old entries array to the new one, without calling the copy/destroy handlers. The re-hashing would still be necessary to find the new bucket index, but the expensive data copying can be avoided.