// freezing is set to non-zero if the runtime is trying to freeze the
// world.
var freezing atomic.Bool

// Similar to stopTheWorld but best-effort and can be called several times.
// There is no reverse operation, used during crashing.
// This function must not lock any mutexes.
func freezetheworld() {
	freezing.Store(true)
	if debug.dontfreezetheworld > 0 {