go main 源码
golang main 代码
文件路径：/misc/cgo/testasan/main.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 main
/*
#include <sys/mman.h>
#include <pthread.h>
#include <unistd.h>
void ctor(void) __attribute__((constructor));
static void* thread(void*);
void
ctor(void)
{
// occupy memory where Go runtime would normally map heap
mmap((void*)0x00c000000000, 64<<10, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_FIXED, -1, 0);
// allocate 4K every 10us
pthread_t t;
pthread_create(&t, 0, thread, 0);
}
static void*
thread(void *p)
{
for(;;) {
usleep(10000);
mmap(0, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0);
}
return 0;
}
*/
import "C"
import (
"fmt"
"os"
"path/filepath"
"time"
)
func main() {
start := time.Now()
// ensure that we can function normally
var v [][]byte
for i := 0; i < 1000; i++ {
time.Sleep(10 * time.Microsecond)
v = append(v, make([]byte, 64<<10))
}
fmt.Printf("ok\t%s\t%s\n", filepath.Base(os.Args[0]), time.Since(start).Round(time.Millisecond))
}
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