mirror of
https://github.com/golang/go
synced 2024-09-30 06:24:33 -06:00
e16f64c094
Otherwise, these tests produce no output, which can make the overall output of all.bash a bit tricky to decipher. Updates #30316 Updates #29062 Change-Id: I33b9e070fd28b9f21ece128e9e603a982c08b7cc Reviewed-on: https://go-review.googlesource.com/c/go/+/208483 Run-TryBot: Bryan C. Mills <bcmills@google.com> Reviewed-by: Jay Conrod <jayconrod@google.com>
57 lines
1.1 KiB
Go
57 lines
1.1 KiB
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))
|
|
}
|