1// Copyright 2015 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
5package main
6
7import "C"
8
9import (
10	"os"
11	"os/signal"
12	"syscall"
13	"time"
14)
15
16// The channel used to read SIGIO signals.
17var sigioChan chan os.Signal
18
19// CatchSIGIO starts catching SIGIO signals.
20//
21//export CatchSIGIO
22func CatchSIGIO() {
23	sigioChan = make(chan os.Signal, 1)
24	signal.Notify(sigioChan, syscall.SIGIO)
25}
26
27// ResetSIGIO stops catching SIGIO signals.
28//
29//export ResetSIGIO
30func ResetSIGIO() {
31	signal.Reset(syscall.SIGIO)
32}
33
34// SawSIGIO reports whether we saw a SIGIO.
35//
36//export SawSIGIO
37func SawSIGIO() C.int {
38	select {
39	case <-sigioChan:
40		return 1
41	case <-time.After(5 * time.Second):
42		return 0
43	}
44}
45
46// ProvokeSIGPIPE provokes a kernel-initiated SIGPIPE.
47//
48//export ProvokeSIGPIPE
49func ProvokeSIGPIPE() {
50	r, w, err := os.Pipe()
51	if err != nil {
52		panic(err)
53	}
54	r.Close()
55	defer w.Close()
56	w.Write([]byte("some data"))
57}
58
59func main() {
60}
61