mirror of
https://github.com/golang/go
synced 2024-11-23 09:20:05 -07:00
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
|
|
|
|
// 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 goroutines and garbage collection run during init.
|
|
|
|
package main
|
|
|
|
import "runtime"
|
|
|
|
var x []byte
|
|
|
|
func init() {
|
|
c := make(chan int)
|
|
go send(c)
|
|
<-c
|
|
|
|
const N = 1000
|
|
const MB = 1 << 20
|
|
b := make([]byte, MB)
|
|
for i := range b {
|
|
b[i] = byte(i%10 + '0')
|
|
}
|
|
s := string(b)
|
|
|
|
memstats := new(runtime.MemStats)
|
|
runtime.ReadMemStats(memstats)
|
|
sys, numGC := memstats.Sys, memstats.NumGC
|
|
|
|
// Generate 1,000 MB of garbage, only retaining 1 MB total.
|
|
for i := 0; i < N; i++ {
|
|
x = []byte(s)
|
|
}
|
|
|
|
// Verify that the garbage collector ran by seeing if we
|
|
// allocated fewer than N*MB bytes from the system.
|
|
runtime.ReadMemStats(memstats)
|
|
sys1, numGC1 := memstats.Sys, memstats.NumGC
|
|
if sys1-sys >= N*MB || numGC1 == numGC {
|
|
println("allocated 1000 chunks of", MB, "and used ", sys1-sys, "memory")
|
|
println("numGC went", numGC, "to", numGC1)
|
|
panic("init1")
|
|
}
|
|
}
|
|
|
|
func send(c chan int) {
|
|
c <- 1
|
|
}
|
|
|
|
func main() {
|
|
}
|