BIG_PAYLOAD
MemoryRingIOTest* big = new MemoryRingIOTest(sizeof(BIG_PAYLOAD));
CHK(fRing.WriteExactly(BIG_PAYLOAD, sizeof(BIG_PAYLOAD), NULL) == B_OK);
ReadCheck(fRing, BIG_PAYLOAD, sizeof(BIG_PAYLOAD));
CHK(fRing.BufferSize() < sizeof(BIG_PAYLOAD));
CHK(fRing.WriteExactly(BIG_PAYLOAD, sizeof(BIG_PAYLOAD), NULL)
CHK(fRing.SetSize(sizeof(BIG_PAYLOAD)) == B_OK);
CHK(fRing.WriteExactly(BIG_PAYLOAD, sizeof(BIG_PAYLOAD)) == B_OK);
ReadCheck(fRing, BIG_PAYLOAD, sizeof(BIG_PAYLOAD));