mirror of
https://github.com/golang/go
synced 2024-11-06 08:26:12 -07:00
1be957d703
This is needed for typical tests with gccgo, as it passes the LD_LIBRARY_PATH environment variable to the new program. Change-Id: I9bf4b0dbdff63f5449c7fcb8124eaeab10ed7f34 Reviewed-on: https://go-review.googlesource.com/35481 Run-TryBot: Ian Lance Taylor <iant@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
129 lines
2.8 KiB
Go
129 lines
2.8 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 !windows
|
|
|
|
// Issue 18146: pthread_create failure during syscall.Exec.
|
|
|
|
package cgotest
|
|
|
|
import "C"
|
|
|
|
import (
|
|
"bytes"
|
|
"crypto/md5"
|
|
"os"
|
|
"os/exec"
|
|
"runtime"
|
|
"syscall"
|
|
"testing"
|
|
"time"
|
|
)
|
|
|
|
func test18146(t *testing.T) {
|
|
if runtime.GOOS == "darwin" {
|
|
t.Skipf("skipping flaky test on %s; see golang.org/issue/18202", runtime.GOOS)
|
|
}
|
|
|
|
if runtime.GOARCH == "mips" || runtime.GOARCH == "mips64" {
|
|
t.Skipf("skipping on %s", runtime.GOARCH)
|
|
}
|
|
|
|
attempts := 1000
|
|
threads := 4
|
|
|
|
if testing.Short() {
|
|
attempts = 100
|
|
}
|
|
|
|
// Restrict the number of attempts based on RLIMIT_NPROC.
|
|
// Tediously, RLIMIT_NPROC was left out of the syscall package,
|
|
// probably because it is not in POSIX.1, so we define it here.
|
|
// It is not defined on Solaris.
|
|
var nproc int
|
|
setNproc := true
|
|
switch runtime.GOOS {
|
|
default:
|
|
setNproc = false
|
|
case "linux":
|
|
nproc = 6
|
|
case "darwin", "dragonfly", "freebsd", "netbsd", "openbsd":
|
|
nproc = 7
|
|
}
|
|
if setNproc {
|
|
var rlim syscall.Rlimit
|
|
if syscall.Getrlimit(nproc, &rlim) == nil {
|
|
max := int(rlim.Cur) / (threads + 5)
|
|
if attempts > max {
|
|
t.Logf("lowering attempts from %d to %d for RLIMIT_NPROC", attempts, max)
|
|
attempts = max
|
|
}
|
|
}
|
|
}
|
|
|
|
if os.Getenv("test18146") == "exec" {
|
|
runtime.GOMAXPROCS(1)
|
|
for n := threads; n > 0; n-- {
|
|
go func() {
|
|
for {
|
|
_ = md5.Sum([]byte("Hello, !"))
|
|
}
|
|
}()
|
|
}
|
|
runtime.GOMAXPROCS(threads)
|
|
argv := append(os.Args, "-test.run=NoSuchTestExists")
|
|
if err := syscall.Exec(os.Args[0], argv, os.Environ()); err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
}
|
|
|
|
var cmds []*exec.Cmd
|
|
defer func() {
|
|
for _, cmd := range cmds {
|
|
cmd.Process.Kill()
|
|
}
|
|
}()
|
|
|
|
args := append(append([]string(nil), os.Args[1:]...), "-test.run=Test18146")
|
|
for n := attempts; n > 0; n-- {
|
|
cmd := exec.Command(os.Args[0], args...)
|
|
cmd.Env = append(os.Environ(), "test18146=exec")
|
|
buf := bytes.NewBuffer(nil)
|
|
cmd.Stdout = buf
|
|
cmd.Stderr = buf
|
|
if err := cmd.Start(); err != nil {
|
|
// We are starting so many processes that on
|
|
// some systems (problem seen on Darwin,
|
|
// Dragonfly, OpenBSD) the fork call will fail
|
|
// with EAGAIN.
|
|
if pe, ok := err.(*os.PathError); ok {
|
|
err = pe.Err
|
|
}
|
|
if se, ok := err.(syscall.Errno); ok && (se == syscall.EAGAIN || se == syscall.EMFILE) {
|
|
time.Sleep(time.Millisecond)
|
|
continue
|
|
}
|
|
|
|
t.Error(err)
|
|
return
|
|
}
|
|
cmds = append(cmds, cmd)
|
|
}
|
|
|
|
failures := 0
|
|
for _, cmd := range cmds {
|
|
err := cmd.Wait()
|
|
if err == nil {
|
|
continue
|
|
}
|
|
|
|
t.Errorf("syscall.Exec failed: %v\n%s", err, cmd.Stdout)
|
|
failures++
|
|
}
|
|
|
|
if failures > 0 {
|
|
t.Logf("Failed %v of %v attempts.", failures, len(cmds))
|
|
}
|
|
}
|