mirror of
https://github.com/golang/go
synced 2024-07-20 17:48:31 +00:00
45 lines
946 B
Go
45 lines
946 B
Go
// run
|
|
|
|
// 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.
|
|
|
|
// Test 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)
|
|
}
|
|
}
|