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comparison libgo/misc/cgo/test/issue3250.go @ 111:04ced10e8804

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gcc 7
author kono
date Fri, 27 Oct 2017 22:46:09 +0900
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68:561a7518be6b 111:04ced10e8804
1 // Copyright 2013 The Go Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style
3 // license that can be found in the LICENSE file.
4
5 // +build !windows
6
7 package cgotest
8
9 /*
10 #include <signal.h>
11 #include <pthread.h>
12 #include <unistd.h>
13 #include <stdlib.h>
14
15 static void *thread(void *p) {
16 const int M = 100;
17 int i;
18 (void)p;
19 for (i = 0; i < M; i++) {
20 pthread_kill(pthread_self(), SIGCHLD);
21 usleep(rand() % 20 + 5);
22 }
23 return NULL;
24 }
25 void testSendSIG() {
26 const int N = 20;
27 int i;
28 pthread_t tid[N];
29 for (i = 0; i < N; i++) {
30 usleep(rand() % 200 + 100);
31 pthread_create(&tid[i], 0, thread, NULL);
32 }
33 for (i = 0; i < N; i++)
34 pthread_join(tid[i], 0);
35 }
36 */
37 import "C"
38
39 import (
40 "os"
41 "os/signal"
42 "syscall"
43 "testing"
44 "time"
45 )
46
47 func test3250(t *testing.T) {
48 t.Skip("skipped, see golang.org/issue/5885")
49 const (
50 thres = 1
51 sig = syscall.SIGCHLD
52 )
53 type result struct {
54 n int
55 sig os.Signal
56 }
57 var (
58 sigCh = make(chan os.Signal, 10)
59 waitStart = make(chan struct{})
60 waitDone = make(chan result)
61 )
62
63 signal.Notify(sigCh, sig)
64
65 go func() {
66 n := 0
67 alarm := time.After(time.Second * 3)
68 for {
69 select {
70 case <-waitStart:
71 waitStart = nil
72 case v := <-sigCh:
73 n++
74 if v != sig || n > thres {
75 waitDone <- result{n, v}
76 return
77 }
78 case <-alarm:
79 waitDone <- result{n, sig}
80 return
81 }
82 }
83 }()
84
85 waitStart <- struct{}{}
86 C.testSendSIG()
87 r := <-waitDone
88 if r.sig != sig {
89 t.Fatalf("received signal %v, but want %v", r.sig, sig)
90 }
91 t.Logf("got %d signals\n", r.n)
92 if r.n <= thres {
93 t.Fatalf("expected more than %d", thres)
94 }
95 }