Function release_index

read-cache.c:2426–2454

}

void release_index(struct index_state *istate)
{
	/*
	 * Cache entries in istate->cache[] should have been allocated
	 * from the memory pool associated with this index, or from an
	 * associated split_index. There is no need to free individual
	 * cache entries. validate_cache_entries can detect when this
	 * assertion does not hold.
	 */
	validate_cache_entries(istate);

	resolve_undo_clear_index(istate);
	free_name_hash(istate);
	cache_tree_free(&(istate->cache_tree));
	free(istate->fsmonitor_last_update);
	free(istate->cache);
	discard_split_index(istate);
	free_untracked_cache(istate->untracked);

	if (istate->sparse_checkout_patterns) {
		clear_pattern_list(istate->sparse_checkout_patterns);
		FREE_AND_NULL(istate->sparse_checkout_patterns);
	}

	if (istate->ce_mem_pool) {
		mem_pool_discard(istate->ce_mem_pool, should_validate_cache_entries());
		FREE_AND_NULL(istate->ce_mem_pool);
	}
}

void discard_index(struct index_state *istate)
{