mirror of
https://github.com/golang/go
synced 2024-11-12 03:40:21 -07:00
d2cc988429
X ,s;^// \$G (\$D/)?\$F\.go *$;// compile;g X ,s;^// \$G (\$D/)?\$F\.go && \$L \$F\.\$A *$;// build;g X ,s;^// \$G (\$D/)?\$F\.go && \$L \$F\.\$A && \./\$A\.out *$;// run;g X ,s;^// errchk \$G( -e)? (\$D/)?\$F\.go *$;// errorcheck;g R=golang-dev, bradfitz CC=golang-dev https://golang.org/cl/5673079
45 lines
798 B
Go
45 lines
798 B
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 chunk = 1 << 20
|
|
memstats := new(runtime.MemStats)
|
|
runtime.ReadMemStats(memstats)
|
|
sys := 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.ReadMemStats(memstats)
|
|
sys1 := 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() {
|
|
}
|