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go/test/gc2.go
Russ Cox 0c2a727477 build: make nacl pass
Add nacl.bash, the NaCl version of all.bash.
It's a separate script because it builds a variant of package syscall
with a large zip file embedded in it, containing all the input files
needed for tests.

Disable various tests new since the last round, mostly the ones using os/exec.

Fixes #7945.

LGTM=dave
R=golang-codereviews, remyoudompheng, dave, bradfitz
CC=golang-codereviews
https://golang.org/cl/100590044
2014-05-20 12:10:19 -04:00

47 lines
970 B
Go

// run
// +build !nacl
// 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 := int64(memstats.HeapObjects - st.HeapObjects)
if obj > N/5 {
fmt.Println("too many objects left:", obj)
os.Exit(1)
}
}