go libgo3 源码
golang libgo3 代码
文件路径：/misc/cgo/testcarchive/testdata/libgo3/libgo3.go
// Copyright 2015 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.
package main
import "C"
import (
"os"
"os/signal"
"syscall"
"time"
)
// The channel used to read SIGIO signals.
var sigioChan chan os.Signal
// CatchSIGIO starts catching SIGIO signals.
//export CatchSIGIO
func CatchSIGIO() {
sigioChan = make(chan os.Signal, 1)
signal.Notify(sigioChan, syscall.SIGIO)
}
// ResetSIGIO stops catching SIGIO signals.
//export ResetSIGIO
func ResetSIGIO() {
signal.Reset(syscall.SIGIO)
}
// SawSIGIO reports whether we saw a SIGIO.
//export SawSIGIO
func SawSIGIO() C.int {
select {
case <-sigioChan:
return 1
case <-time.After(5 * time.Second):
return 0
}
}
// ProvokeSIGPIPE provokes a kernel-initiated SIGPIPE.
//export ProvokeSIGPIPE
func ProvokeSIGPIPE() {
r, w, err := os.Pipe()
if err != nil {
panic(err)
}
r.Close()
defer w.Close()
w.Write([]byte("some data"))
}
func main() {
}
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