golang tls 代码
文件路径：/misc/cgo/testtls/tls.go
/ Copyright 2013 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 cgotlstest
/ #include <pthread.h>
/ extern void setTLS(int);
/ extern int getTLS();
import "C"
import (
"runtime"
"testing"
)
func testTLS(t *testing.T) {
runtime.LockOSThread()
defer runtime.UnlockOSThread()
if val := C.getTLS(); val != 0 {
t.Fatalf("at start, C.getTLS() = %#x, want 0", val)
}
const keyVal = 0x1234
C.setTLS(keyVal)
if val := C.getTLS(); val != keyVal {
t.Fatalf("at end, C.getTLS() = %#x, want %#x", val, keyVal)
}
}