| // $G $D/$F.go && $L $F.$A && ./$A.out |
| |
| // Copyright 2009 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. |
| |
| // trivial finalizer test |
| |
| package main |
| |
| import "runtime" |
| |
| const N = 250 |
| |
| type A struct { |
| b *B |
| n int |
| } |
| |
| type B struct { |
| n int |
| } |
| |
| var i int |
| var nfinal int |
| var final [N]int |
| |
| func finalA(a *A) { |
| if final[a.n] != 0 { |
| panicln("finalA", a.n, final[a.n]) |
| } |
| final[a.n] = 1 |
| } |
| |
| func finalB(b *B) { |
| if final[b.n] != 1 { |
| panicln("finalB", b.n, final[b.n]) |
| } |
| final[b.n] = 2 |
| nfinal++ |
| } |
| |
| func main() { |
| runtime.GOMAXPROCS(4) |
| for i = 0; i < N; i++ { |
| b := &B{i} |
| a := &A{b, i} |
| runtime.SetFinalizer(b, finalB) |
| runtime.SetFinalizer(a, finalA) |
| } |
| for i := 0; i < N; i++ { |
| runtime.GC() |
| runtime.Gosched() |
| } |
| if nfinal < N*9/10 { |
| panic("not enough finalizing:", nfinal, "/", N) |
| } |
| } |