type runtime.immortalWeakHandleMap

3 uses

	runtime (current package)
		mheap.go#L259: 	immortalWeakHandles immortalWeakHandleMap
		mheap.go#L2626: type immortalWeakHandleMap struct {
		mheap.go#L2657: func (tab *immortalWeakHandleMap) getOrAdd(p uintptr) *atomic.Uintptr {