go libgo2 源码
golang libgo2 代码
文件路径：/misc/cgo/testcarchive/testdata/libgo2/libgo2.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 <unistd.h>
#include <stdlib.h>
#include <stdio.h>
// Raise SIGPIPE.
static void CRaiseSIGPIPE() {
int fds[2];
if (pipe(fds) == -1) {
perror("pipe");
exit(EXIT_FAILURE);
}
// Close the reader end
close(fds[0]);
// Write to the writer end to provoke a SIGPIPE
if (write(fds[1], "some data", 9) != -1) {
fprintf(stderr, "write to a closed pipe succeeded\n");
exit(EXIT_FAILURE);
}
close(fds[1]);
}
*/
import "C"
import (
"fmt"
"os"
"runtime"
)
// RunGoroutines starts some goroutines that don't do anything.
// The idea is to get some threads going, so that a signal will be delivered
// to a thread started by Go.
//export RunGoroutines
func RunGoroutines() {
for i := 0; i < 4; i++ {
go func() {
runtime.LockOSThread()
select {}
}()
}
}
var P *byte
// TestSEGV makes sure that an invalid address turns into a run-time Go panic.
//export TestSEGV
func TestSEGV() {
defer func() {
if recover() == nil {
fmt.Fprintln(os.Stderr, "no panic from segv")
os.Exit(1)
}
}()
*P = 0
fmt.Fprintln(os.Stderr, "continued after segv")
os.Exit(1)
}
// Noop ensures that the Go runtime is initialized.
//export Noop
func Noop() {
}
// Raise SIGPIPE.
//export GoRaiseSIGPIPE
func GoRaiseSIGPIPE() {
C.CRaiseSIGPIPE()
}
func main() {
}
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