static void test() { size_t size = 2 * 1024 * 1024; void* memory = malloc(size); assert(memory != NULL, "Failed to malloc 2MB"); Metachunk* metachunk = ::new (memory) Metachunk(size / BytesPerWord, NULL); assert(metachunk->bottom() == (MetaWord*)metachunk, "assert"); assert(metachunk->end() == (uintptr_t*)metachunk + metachunk->size(), "assert"); // Check sizes assert(metachunk->size() == metachunk->word_size(), "assert"); assert(metachunk->word_size() == pointer_delta(metachunk->end(), metachunk->bottom(), sizeof(MetaWord*)), "assert"); // Check usage assert(metachunk->used_word_size() == metachunk->overhead(), "assert"); assert(metachunk->free_word_size() == metachunk->word_size() - metachunk->used_word_size(), "assert"); assert(metachunk->top() == metachunk->initial_top(), "assert"); assert(metachunk->is_empty(), "assert"); // Allocate size_t alloc_size = 64; // Words assert(is_size_aligned(alloc_size, Metachunk::object_alignment()), "assert"); MetaWord* mem = metachunk->allocate(alloc_size); // Check post alloc assert(mem == metachunk->initial_top(), "assert"); assert(mem + alloc_size == metachunk->top(), "assert"); assert(metachunk->used_word_size() == metachunk->overhead() + alloc_size, "assert"); assert(metachunk->free_word_size() == metachunk->word_size() - metachunk->used_word_size(), "assert"); assert(!metachunk->is_empty(), "assert"); // Clear chunk metachunk->reset_empty(); // Check post clear assert(metachunk->used_word_size() == metachunk->overhead(), "assert"); assert(metachunk->free_word_size() == metachunk->word_size() - metachunk->used_word_size(), "assert"); assert(metachunk->top() == metachunk->initial_top(), "assert"); assert(metachunk->is_empty(), "assert"); free(memory); }