Subversion Repositories openrisc

// $G $D/$F.go && $L $F.$A && ./$A.out

// Copyright 2011 The Go Authors.  All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

// Check that buffered channels are garbage collected properly.
// An interesting case because they have finalizers and used to
// have self loops that kept them from being collected.
// (Cyclic data with finalizers is never finalized, nor collected.)

package main

import (
        "fmt"
        "os"
        "runtime"
)

func main() {
        const N = 10000
        st := new(runtime.MemStats)
        memstats := new(runtime.MemStats)
        runtime.ReadMemStats(st)
        for i := 0; i < N; i++ {
                c := make(chan int, 10)
                _ = c
                if i%100 == 0 {
                        for j := 0; j < 4; j++ {
                                runtime.GC()
                                runtime.Gosched()
                                runtime.GC()
                                runtime.Gosched()
                        }
                }
        }

        runtime.ReadMemStats(memstats)
        obj := memstats.HeapObjects - st.HeapObjects
        if obj > N/5 {
                fmt.Println("too many objects left:", obj)
                os.Exit(1)
        }
}