/// <summary>
/// Decrements the root count of the object at the pointer by 1
/// </summary>
/// <param name="aPtr"></param>
public static unsafe void DecRootCount(ushort *aPtr)
{
if (RAT.GetPageType(aPtr) != 0)
{
var rootCount = *(aPtr - 1) >> 1; // lowest bit is used to set if hit
*(aPtr - 1) = (ushort)((rootCount - 1) << 1); // loest bit can be zero since we shouldnt be doing this while gc is collecting
}
}
private unsafe void TestGarbageCollectorMethods()
{
// allocating + freeing works on gc side
int allocated = HeapSmall.GetAllocatedObjectCount();
object c = new object();
int nowAllocated = HeapSmall.GetAllocatedObjectCount();
GCImplementation.Free(c);
int afterFree = HeapSmall.GetAllocatedObjectCount();
Assert.AreEqual(allocated + 1, nowAllocated, "NewObj causes one object to be allocated");
Assert.AreEqual(allocated, afterFree, "Free causes one object to be freed again");
var testString = "asd";
Assert.AreEqual(RAT.PageType.Empty, RAT.GetPageType(GCImplementation.GetPointer(testString)), "String is created statically and not managed by GC");
Assert.IsTrue(Heap.Collect() >= 0, "Running GC Collect first time does not crash and returns non-negative value");
}