for i := 0; i < numReaders; i++ {
		<-clocked
	}
	cunlock.Store(true)
	// Wait for the goroutines to finish.
	for i := 0; i < numReaders; i++ {
		<-cdone
	}
}

func TestParallelRWMutexReaders(t *testing.T) {
	if GOARCH == "wasm" {
		t.Skip("wasm has no threads yet")
	}
	defer GOMAXPROCS(GOMAXPROCS(-1))
	// If runtime triggers a forced GC during this test then it will deadlock,