Method CollectMemory

NULLC/translation/runtime.cpp:1434–1496

}

void NULLC::CollectMemory()
{
	GC_DEBUG_PRINT("%d used memory (%d collectable cap, %d max cap)\r\n", usedMemory, collectableMinimum, globalMemoryLimit);

	double time = (double(clock()) / CLOCKS_PER_SEC);

	GC::unmanageableBase = (char*)&time;

	// All memory blocks are marked with 0
	MarkMemory(0);
	// Used memory blocks are marked with 1
	MarkUsedBlocks();

	markTime += (double(clock()) / CLOCKS_PER_SEC) - time;
	time = (double(clock()) / CLOCKS_PER_SEC);

	// Globally allocated objects marked with 0 are deleted
	unsigned int unusedBlocks = 0;
	for(unsigned int i = 0; i < globalObjects.size(); i++)
	{
		if(((unsigned int*)globalObjects[i])[1] == 0)
		{
			usedMemory -= *(unsigned int*)globalObjects[i];
			NULLC::dealloc(globalObjects[i]);
			globalObjects[i] = globalObjects.back();
			globalObjects.pop_back();
			unusedBlocks++;
		}
	}
//	printf("%d unused globally allocated blocks destroyed (%d remains)\r\n", unusedBlocks, globalObjects.size());

//	printf("%d used memory\r\n", usedMemory);

	// Objects allocated from pools are freed
	unusedBlocks = pool8.FreeMarked(0);
	usedMemory -= unusedBlocks * 8;
//	printf("%d unused pool blocks freed (8 bytes)\r\n", unusedBlocks);
	unusedBlocks = pool16.FreeMarked(0);
	usedMemory -= unusedBlocks * 16;
//	printf("%d unused pool blocks freed (16 bytes)\r\n", unusedBlocks);
	unusedBlocks = pool32.FreeMarked(0);
	usedMemory -= unusedBlocks * 32;
//	printf("%d unused pool blocks freed (32 bytes)\r\n", unusedBlocks);
	unusedBlocks = pool64.FreeMarked(0);
	usedMemory -= unusedBlocks * 64;
//	printf("%d unused pool blocks freed (64 bytes)\r\n", unusedBlocks);
	unusedBlocks = pool128.FreeMarked(0);
	usedMemory -= unusedBlocks * 128;
//	printf("%d unused pool blocks freed (128 bytes)\r\n", unusedBlocks);
	unusedBlocks = pool256.FreeMarked(0);
	usedMemory -= unusedBlocks * 256;
//	printf("%d unused pool blocks freed (256 bytes)\r\n", unusedBlocks);
	unusedBlocks = pool512.FreeMarked(0);
	usedMemory -= unusedBlocks * 512;
//	printf("%d unused pool blocks freed (512 bytes)\r\n", unusedBlocks);

	GC_DEBUG_PRINT("%d used memory\r\n", usedMemory);