mirror of
https://github.com/golang/go
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c14b2689f0
Linux/amd64, 2 x Intel Xeon E5620, 8 HT cores, 2.40GHz benchmark old ns/op new ns/op delta BenchmarkFinalizer 420.00 261.00 -37.86% BenchmarkFinalizer-2 985.00 201.00 -79.59% BenchmarkFinalizer-4 1077.00 244.00 -77.34% BenchmarkFinalizer-8 1155.00 180.00 -84.42% BenchmarkFinalizer-16 1182.00 184.00 -84.43% BenchmarkFinalizerRun 2128.00 1378.00 -35.24% BenchmarkFinalizerRun-2 1655.00 1418.00 -14.32% BenchmarkFinalizerRun-4 1634.00 1522.00 -6.85% BenchmarkFinalizerRun-8 2213.00 1581.00 -28.56% BenchmarkFinalizerRun-16 2424.00 1599.00 -34.03% Darwin/amd64, Intel L9600, 2 cores, 2.13GHz benchmark old ns/op new ns/op delta BenchmarkChanCreation 1451.00 926.00 -36.18% BenchmarkChanCreation-2 3124.00 1412.00 -54.80% BenchmarkChanCreation-4 6121.00 2628.00 -57.07% BenchmarkFinalizer 684.00 420.00 -38.60% BenchmarkFinalizer-2 11195.00 398.00 -96.44% BenchmarkFinalizer-4 15862.00 654.00 -95.88% BenchmarkFinalizerRun 2025.00 1397.00 -31.01% BenchmarkFinalizerRun-2 3920.00 1447.00 -63.09% BenchmarkFinalizerRun-4 9471.00 1545.00 -83.69% R=golang-dev, cw, rsc CC=golang-dev https://golang.org/cl/4963057
78 lines
1.2 KiB
Go
78 lines
1.2 KiB
Go
// $G $D/$F.go && $L $F.$A && ./$A.out
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// Copyright 2009 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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// trivial finalizer test
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package main
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import (
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"runtime"
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"time"
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)
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const N = 250
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type A struct {
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b *B
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n int
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}
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type B struct {
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n int
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}
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var i int
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var nfinal int
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var final [N]int
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// the unused return is to test finalizers with return values
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func finalA(a *A) (unused [N]int) {
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if final[a.n] != 0 {
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println("finalA", a.n, final[a.n])
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panic("fail")
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}
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final[a.n] = 1
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return
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}
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func finalB(b *B) {
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if final[b.n] != 1 {
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println("finalB", b.n, final[b.n])
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panic("fail")
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}
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final[b.n] = 2
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nfinal++
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}
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func nofinalB(b *B) {
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panic("nofinalB run")
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}
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func main() {
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runtime.GOMAXPROCS(4)
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for i = 0; i < N; i++ {
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b := &B{i}
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a := &A{b, i}
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c := new(B)
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runtime.SetFinalizer(c, nofinalB)
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runtime.SetFinalizer(b, finalB)
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runtime.SetFinalizer(a, finalA)
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runtime.SetFinalizer(c, nil)
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}
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for i := 0; i < N; i++ {
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runtime.GC()
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runtime.Gosched()
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time.Sleep(1e6)
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if nfinal >= N*8/10 {
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break
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}
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}
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if nfinal < N*8/10 {
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println("not enough finalizing:", nfinal, "/", N)
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panic("fail")
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}
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}
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