go libgo4 源码
golang libgo4 代码
文件路径：/misc/cgo/testcarchive/testdata/libgo4/libgo4.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
/*
#include <signal.h>
#include <pthread.h>
// Raise SIGIO.
static void CRaiseSIGIO(pthread_t* p) {
pthread_kill(*p, SIGIO);
}
*/
import "C"
import (
"os"
"os/signal"
"sync/atomic"
"syscall"
)
var sigioCount int32
// Catch SIGIO.
//export GoCatchSIGIO
func GoCatchSIGIO() {
c := make(chan os.Signal, 1)
signal.Notify(c, syscall.SIGIO)
go func() {
for range c {
atomic.AddInt32(&sigioCount, 1)
}
}()
}
// Raise SIGIO.
//export GoRaiseSIGIO
func GoRaiseSIGIO(p *C.pthread_t) {
C.CRaiseSIGIO(p)
}
// Return the number of SIGIO signals seen.
//export SIGIOCount
func SIGIOCount() C.int {
return C.int(atomic.LoadInt32(&sigioCount))
}
func main() {
}
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