Function _memory_deallocate_deferred

vm/ByteCodeTranslator/src/rpmalloc.c:1086–1115

Process pending deferred cross-thread deallocations

//! Process pending deferred cross-thread deallocations
static int
_memory_deallocate_deferred(heap_t* heap, size_t size_class) {
	//Grab the current list of deferred deallocations
	atomic_thread_fence_acquire();
	void* p = atomic_load_ptr(&heap->defer_deallocate);
	if (!p)
		return 0;
	if (!atomic_cas_ptr(&heap->defer_deallocate, 0, p))
		return 0;
	//Keep track if we deallocate in the given size class
	int got_class = 0;
	do {
		void* next = *(void**)p;
		//Get span and check which type of block
		span_t* span = (void*)((uintptr_t)p & SPAN_MASK);
		if (span->size_class < SIZE_CLASS_COUNT) {
			//Small/medium block
			got_class |= (span->size_class == size_class);
			_memory_deallocate_to_heap(heap, span, p);
		}
		else {
			//Large block
			got_class |= ((span->size_class >= size_class) && (span->size_class <= (size_class + 2)));
			_memory_deallocate_large_to_heap(heap, span);
		}
		//Loop until all pending operations in list are processed
		p = next;
	} while (p);
	return got_class;
}

//! Defer deallocation of the given block to the given heap
static void