libgo/go/io/ioutil/blackhole.go

   1 // Copyright 2012 The Go Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style
   3 // license that can be found in the LICENSE file.
   4
   5 package ioutil
   6
   7 var blackHoleBuf = make(chan []byte, 1)
   8
   9 func blackHole() []byte {
  10         select {
  11         case b := <-blackHoleBuf:
  12                 return b
  13         default:
  14         }
  15         return make([]byte, 8192)
  16 }
  17
  18 func blackHolePut(p []byte) {
  19         select {
  20         case blackHoleBuf <- p:
  21         default:
  22         }
  23 }