// +build !nacl,!js
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// run
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// Copyright 2011 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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// Test that buffered channels are garbage collected properly.
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// An interesting case because they have finalizers and used to
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// have self loops that kept them from being collected.
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// (Cyclic data with finalizers is never finalized, nor collected.)
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package main
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import (
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"fmt"
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"os"
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"runtime"
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)
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func main() {
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const N = 10000
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st := new(runtime.MemStats)
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memstats := new(runtime.MemStats)
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runtime.ReadMemStats(st)
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for i := 0; i < N; i++ {
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c := make(chan int, 10)
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_ = c
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if i%100 == 0 {
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for j := 0; j < 4; j++ {
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runtime.GC()
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runtime.Gosched()
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runtime.GC()
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runtime.Gosched()
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}
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}
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}
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runtime.ReadMemStats(memstats)
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obj := int64(memstats.HeapObjects - st.HeapObjects)
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if obj > N/5 {
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fmt.Println("too many objects left:", obj)
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os.Exit(1)
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}
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}
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