runtime: run goroutines during init
Fixes #583.
Fixes #1776.
Fixes #2001.
Fixes #2112.
R=golang-dev, bradfitz, r, gri
CC=golang-dev
https://golang.org/cl/5265044
diff --git a/test/init1.go b/test/init1.go
new file mode 100644
index 0000000..9ce3c12
--- /dev/null
+++ b/test/init1.go
@@ -0,0 +1,44 @@
+// $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() {
+}
+
