mirror of
https://github.com/golang/go
synced 2024-11-12 08:20:22 -07:00
d1bafffa4b
Fixes #583. Fixes #1776. Fixes #2001. Fixes #2112. R=golang-dev, bradfitz, r, gri CC=golang-dev https://golang.org/cl/5265044
45 lines
800 B
Go
45 lines
800 B
Go
// $G $D/$F.go && $L $F.$A && ./$A.out
|
|
|
|
// 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 chunk = 1<<20
|
|
runtime.UpdateMemStats()
|
|
sys := runtime.MemStats.Sys
|
|
b := make([]byte, chunk)
|
|
for i := range b {
|
|
b[i] = byte(i%10 + '0')
|
|
}
|
|
s := string(b)
|
|
for i := 0; i < 1000; i++ {
|
|
x = []byte(s)
|
|
}
|
|
runtime.UpdateMemStats()
|
|
sys1 := runtime.MemStats.Sys
|
|
if sys1-sys > chunk*50 {
|
|
println("allocated 1000 chunks of", chunk, "and used ", sys1-sys, "memory")
|
|
}
|
|
}
|
|
|
|
func send(c chan int) {
|
|
c <- 1
|
|
}
|
|
|
|
func main() {
|
|
}
|
|
|