void*
persistent_mem_alloc(memory_region_t* region, size_t count, size_t size)
{
	size_t total_size = count * size;

	LOG_ASSERT(region->current + total_size < region->end,
		"Exceeded bounds of engine memory by %d bytes",
		region->current + total_size - region->end);

	void* result = region->current;
	region->current += total_size;

	return result;
}

void
persistent_mem_reset(memory_region_t* region)
{
	region->current = region->begin;
}

void*
scratch_mem_alloc(size_t count, size_t size)
{
	size_t total_size = count * size;

	// Reset to beginning, overwriting old stale data
	if (g_memory->scratch.current + total_size > g_memory->scratch.end) {
		LOG_DEBUG("Transient memory reset to beginning");
		g_memory->scratch.current = g_memory->scratch.begin;
	}

	void* result = g_memory->scratch.current;
	g_memory->scratch.current += total_size;

	return result;
}