Function je_malloc_usable_size

deps/jemalloc/src/jemalloc.c:3721–3747

}

JEMALLOC_EXPORT size_t JEMALLOC_NOTHROW
je_malloc_usable_size(JEMALLOC_USABLE_SIZE_CONST void *ptr) {
	size_t ret;
	tsdn_t *tsdn;

	LOG("core.malloc_usable_size.entry", "ptr: %p", ptr);

	assert(malloc_initialized() || IS_INITIALIZER);

	tsdn = tsdn_fetch();
	check_entry_exit_locking(tsdn);

	if (unlikely(ptr == NULL)) {
		ret = 0;
	} else {
		if (config_debug || force_ivsalloc) {
			ret = ivsalloc(tsdn, ptr);
			assert(force_ivsalloc || ret != 0);
		} else {
			ret = isalloc(tsdn, ptr);
		}
	}

	check_entry_exit_locking(tsdn);
	LOG("core.malloc_usable_size.exit", "result: %zu", ret);
	return ret;
}

/*
 * End non-standard functions.