var golang.org/x/net/trace.traceFreeList

3 uses

	golang.org/x/net/trace (current package)
		trace.go#L909: var traceFreeList = make(chan *trace, 1000) // TODO(dsymonds): Use sync.Pool?
		trace.go#L914: 	case tr := <-traceFreeList:
		trace.go#L929: 	case traceFreeList <- tr: