var context.closedchan

4 uses

	context (current package)
		context.go#L369: 	if done == closedchan || done == nil {
		context.go#L408: var closedchan = make(chan struct{})
		context.go#L411: 	close(closedchan)
		context.go#L547: 		c.done.Store(closedchan)