Function RM_MallocSize

app/redis-6.2.6/src/module.c:7557–7559

For a given pointer allocated via RedisModule_Alloc() or * RedisModule_Realloc(), return the amount of memory allocated for it. * Note that this may be different (larger) than the memory we allocated * with the allocation calls, since sometimes the underlying allocator * will allocate more memory. */

 * will allocate more memory.
 */
size_t RM_MallocSize(void* ptr){
    return zmalloc_size(ptr);
}

/* Return the a number between 0 to 1 indicating the amount of memory
 * currently used, relative to the Redis "maxmemory" configuration.