}
	s.freeHWM = minOffAddr
}

// setEmpty marks that the scavenger has finished looking at ci
// for now to prevent the scavenger from getting stuck looking
// at the same chunk.
//
// setEmpty may only run concurrently with find.
func (s *scavengeIndex) setEmpty(ci chunkIdx) {
	val := s.chunks[ci].load()
	val.setEmpty()
	s.chunks[ci].store(val)
}

		si.AllocRange(PageBase(BaseChunkIdx, 0), PageBase(BaseChunkIdx+64, 0))
		si.NextGen()
		si.FreeRange(PageBase(BaseChunkIdx, 0), PageBase(BaseChunkIdx+64, 0))
		for ci := BaseChunkIdx; ci < BaseChunkIdx+64; ci++ {
			si.SetEmpty(ci)
		}
		si.ResetSearchAddrs()

		// Create and return test functions.
		mark = func(base, limit uintptr) {
			t.Helper()

			si.AllocRange(base, limit)
			si.FreeRange(base, limit)
		}

			a.StoreUnmark(addr, addr)
		}
		a.Clear()
	}
	s.i.freeHWM = minOffAddr
}

func (s *ScavengeIndex) NextGen() {
	s.i.nextGen()
}

func (s *ScavengeIndex) SetEmpty(ci ChunkIdx) {
	s.i.setEmpty(chunkIdx(ci))
}

func CheckPackScavChunkData(gen uint32, inUse, lastInUse uint16, flags uint8) bool {
	sc0 := scavChunkData{
		gen:            gen,
		inUse:          inUse,

// the write barrier in turn invoked a gcWork method, it could
// permanently corrupt the gcWork.

func (w *gcWork) init() {
	w.wbuf1 = getempty()
	wbuf2 := trygetfull()
	if wbuf2 == nil {
		wbuf2 = getempty()
	}
	w.wbuf2 = wbuf2
}

// put enqueues a pointer for the garbage collector to trace.
// obj must point to the beginning of a heap object or an oblet.
//

	}
	buf := *head
	if buf == nil {
		// Initial setup.
		buf = (*stackWorkBuf)(unsafe.Pointer(getempty()))
		buf.nobj = 0
		buf.next = nil
		*head = buf
	} else if buf.nobj == len(buf.obj) {
		if s.freeBuf != nil {
			buf = s.freeBuf
			s.freeBuf = nil
		} else {
			buf = (*stackWorkBuf)(unsafe.Pointer(getempty()))
		}
		buf.nobj = 0
		buf.next = *head
		*head = buf
	}
	buf.obj[buf.nobj] = p

	builtinToStringID []uint64
}

const (
	// Block reasons
	sForever = iota
	sPreempted
	sGosched
	sSleep
	sChanSend
	sChanRecv
	sNetwork
	sSync
	sSyncCond
	sSelect
	sEmpty
	sMarkAssistWait

	// STW kinds
	sSTWUnknown
	sSTWGCMarkTermination
	sSTWGCSweepTermination
	sSTWWriteHeapDump
	sSTWGoroutineProfile
	sSTWGoroutineProfileCleanup
	sSTWAllGoroutinesStackTrace