60 lines
1.0 KiB
Go
60 lines
1.0 KiB
Go
// Copyright 2016 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.
|
|
|
|
// +build !plan9,!windows
|
|
|
|
// Test that a sequence of callbacks from C to Go get the same m.
|
|
// This failed to be true on arm and arm64, which was the root cause
|
|
// of issue 13881.
|
|
|
|
package main
|
|
|
|
/*
|
|
#include <stddef.h>
|
|
#include <pthread.h>
|
|
|
|
extern void GoCheckM();
|
|
|
|
static void* thread(void* arg __attribute__ ((unused))) {
|
|
GoCheckM();
|
|
return NULL;
|
|
}
|
|
|
|
static void CheckM() {
|
|
pthread_t tid;
|
|
pthread_create(&tid, NULL, thread, NULL);
|
|
pthread_join(tid, NULL);
|
|
pthread_create(&tid, NULL, thread, NULL);
|
|
pthread_join(tid, NULL);
|
|
}
|
|
*/
|
|
import "C"
|
|
|
|
import (
|
|
"fmt"
|
|
"os"
|
|
)
|
|
|
|
func init() {
|
|
register("EnsureDropM", EnsureDropM)
|
|
}
|
|
|
|
var savedM uintptr
|
|
|
|
//export GoCheckM
|
|
func GoCheckM() {
|
|
m := runtime_getm_for_test()
|
|
if savedM == 0 {
|
|
savedM = m
|
|
} else if savedM != m {
|
|
fmt.Printf("m == %x want %x\n", m, savedM)
|
|
os.Exit(1)
|
|
}
|
|
}
|
|
|
|
func EnsureDropM() {
|
|
C.CheckM()
|
|
fmt.Println("OK")
|
|
}
|