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53fd522c0d
Follows suit with https://go-review.googlesource.com/#/c/20111. Generated by running $ grep -R 'Go Authors. All' * | cut -d":" -f1 | while read F;do perl -pi -e 's/Go Authors. All/Go Authors. All/g' $F;done The code in cmd/internal/unvendor wasn't changed. Fixes #15213 Change-Id: I4f235cee0a62ec435f9e8540a1ec08ae03b1a75f Reviewed-on: https://go-review.googlesource.com/21819 Reviewed-by: Ian Lance Taylor <iant@golang.org> Run-TryBot: Ian Lance Taylor <iant@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org>
54 lines
1.1 KiB
Go
54 lines
1.1 KiB
Go
// 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 goroutines and garbage collection run during init.
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package main
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import "runtime"
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var x []byte
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func init() {
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c := make(chan int)
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go send(c)
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<-c
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const N = 1000
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const MB = 1 << 20
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b := make([]byte, MB)
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for i := range b {
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b[i] = byte(i%10 + '0')
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}
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s := string(b)
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memstats := new(runtime.MemStats)
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runtime.ReadMemStats(memstats)
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sys, numGC := memstats.Sys, memstats.NumGC
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// Generate 1,000 MB of garbage, only retaining 1 MB total.
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for i := 0; i < N; i++ {
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x = []byte(s)
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}
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// Verify that the garbage collector ran by seeing if we
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// allocated fewer than N*MB bytes from the system.
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runtime.ReadMemStats(memstats)
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sys1, numGC1 := memstats.Sys, memstats.NumGC
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if sys1-sys >= N*MB || numGC1 == numGC {
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println("allocated 1000 chunks of", MB, "and used ", sys1-sys, "memory")
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println("numGC went", numGC, "to", numGC1)
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panic("init1")
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}
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}
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func send(c chan int) {
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c <- 1
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}
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func main() {
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}
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