c2047754c3
Compiler changes:
* Change map assignment to use mapassign and assign value directly.
* Change string iteration to use decoderune, faster for ASCII strings.
* Change makeslice to take int, and use makeslice64 for larger values.
* Add new noverflow field to hmap struct used for maps.
Unresolved problems, to be fixed later:
* Commented out test in go/types/sizes_test.go that doesn't compile.
* Commented out reflect.TestStructOf test for padding after zero-sized field.
Reviewed-on: https://go-review.googlesource.com/35231
gotools/:
Updates for Go 1.8rc1.
* Makefile.am (go_cmd_go_files): Add bug.go.
(s-zdefaultcc): Write defaultPkgConfig.
* Makefile.in: Rebuild.
From-SVN: r244456
530 lines
13 KiB
Go
530 lines
13 KiB
Go
// Copyright 2012 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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package runtime_test
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import (
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"bytes"
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"flag"
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"fmt"
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"internal/testenv"
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"io/ioutil"
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"os"
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"os/exec"
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"path/filepath"
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"regexp"
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"runtime"
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"strconv"
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"strings"
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"sync"
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"testing"
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"time"
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)
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var toRemove []string
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func TestMain(m *testing.M) {
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status := m.Run()
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for _, file := range toRemove {
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os.RemoveAll(file)
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}
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os.Exit(status)
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}
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func testEnv(cmd *exec.Cmd) *exec.Cmd {
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if cmd.Env != nil {
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panic("environment already set")
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}
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for _, env := range os.Environ() {
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// Exclude GODEBUG from the environment to prevent its output
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// from breaking tests that are trying to parse other command output.
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if strings.HasPrefix(env, "GODEBUG=") {
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continue
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}
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// Exclude GOTRACEBACK for the same reason.
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if strings.HasPrefix(env, "GOTRACEBACK=") {
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continue
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}
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cmd.Env = append(cmd.Env, env)
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}
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return cmd
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}
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var testprog struct {
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sync.Mutex
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dir string
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target map[string]buildexe
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}
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type buildexe struct {
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exe string
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err error
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}
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func runTestProg(t *testing.T, binary, name string) string {
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testenv.MustHaveGoBuild(t)
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exe, err := buildTestProg(t, binary)
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if err != nil {
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t.Fatal(err)
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}
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cmd := testEnv(exec.Command(exe, name))
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var b bytes.Buffer
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cmd.Stdout = &b
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cmd.Stderr = &b
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if err := cmd.Start(); err != nil {
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t.Fatalf("starting %s %s: %v", binary, name, err)
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}
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// If the process doesn't complete within 1 minute,
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// assume it is hanging and kill it to get a stack trace.
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p := cmd.Process
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done := make(chan bool)
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go func() {
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scale := 1
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// This GOARCH/GOOS test is copied from cmd/dist/test.go.
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// TODO(iant): Have cmd/dist update the environment variable.
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if runtime.GOARCH == "arm" || runtime.GOOS == "windows" {
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scale = 2
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}
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if s := os.Getenv("GO_TEST_TIMEOUT_SCALE"); s != "" {
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if sc, err := strconv.Atoi(s); err == nil {
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scale = sc
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}
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}
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select {
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case <-done:
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case <-time.After(time.Duration(scale) * time.Minute):
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p.Signal(sigquit)
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}
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}()
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if err := cmd.Wait(); err != nil {
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t.Logf("%s %s exit status: %v", binary, name, err)
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}
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close(done)
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return b.String()
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}
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func buildTestProg(t *testing.T, binary string, flags ...string) (string, error) {
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checkStaleRuntime(t)
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testprog.Lock()
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defer testprog.Unlock()
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if testprog.dir == "" {
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dir, err := ioutil.TempDir("", "go-build")
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if err != nil {
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t.Fatalf("failed to create temp directory: %v", err)
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}
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testprog.dir = dir
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toRemove = append(toRemove, dir)
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}
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if testprog.target == nil {
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testprog.target = make(map[string]buildexe)
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}
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name := binary
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if len(flags) > 0 {
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name += "_" + strings.Join(flags, "_")
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}
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target, ok := testprog.target[name]
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if ok {
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return target.exe, target.err
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}
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exe := filepath.Join(testprog.dir, name+".exe")
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cmd := exec.Command(testenv.GoToolPath(t), append([]string{"build", "-o", exe}, flags...)...)
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cmd.Dir = "testdata/" + binary
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out, err := testEnv(cmd).CombinedOutput()
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if err != nil {
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target.err = fmt.Errorf("building %s %v: %v\n%s", binary, flags, err, out)
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testprog.target[name] = target
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return "", target.err
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}
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target.exe = exe
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testprog.target[name] = target
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return exe, nil
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}
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var (
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staleRuntimeOnce sync.Once // guards init of staleRuntimeErr
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staleRuntimeErr error
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)
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func checkStaleRuntime(t *testing.T) {
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staleRuntimeOnce.Do(func() {
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// 'go run' uses the installed copy of runtime.a, which may be out of date.
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out, err := testEnv(exec.Command(testenv.GoToolPath(t), "list", "-f", "{{.Stale}}", "runtime")).CombinedOutput()
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if err != nil {
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staleRuntimeErr = fmt.Errorf("failed to execute 'go list': %v\n%v", err, string(out))
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return
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}
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if string(out) != "false\n" {
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staleRuntimeErr = fmt.Errorf("Stale runtime.a. Run 'go install runtime'.")
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}
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})
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if staleRuntimeErr != nil {
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t.Fatal(staleRuntimeErr)
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}
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}
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func testCrashHandler(t *testing.T, cgo bool) {
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type crashTest struct {
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Cgo bool
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}
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var output string
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if cgo {
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output = runTestProg(t, "testprogcgo", "Crash")
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} else {
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output = runTestProg(t, "testprog", "Crash")
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}
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want := "main: recovered done\nnew-thread: recovered done\nsecond-new-thread: recovered done\nmain-again: recovered done\n"
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if output != want {
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t.Fatalf("output:\n%s\n\nwanted:\n%s", output, want)
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}
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}
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func TestCrashHandler(t *testing.T) {
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testCrashHandler(t, false)
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}
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func testDeadlock(t *testing.T, name string) {
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output := runTestProg(t, "testprog", name)
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want := "fatal error: all goroutines are asleep - deadlock!\n"
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if !strings.HasPrefix(output, want) {
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t.Fatalf("output does not start with %q:\n%s", want, output)
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}
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}
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func TestSimpleDeadlock(t *testing.T) {
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testDeadlock(t, "SimpleDeadlock")
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}
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func TestInitDeadlock(t *testing.T) {
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testDeadlock(t, "InitDeadlock")
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}
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func TestLockedDeadlock(t *testing.T) {
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testDeadlock(t, "LockedDeadlock")
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}
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func TestLockedDeadlock2(t *testing.T) {
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testDeadlock(t, "LockedDeadlock2")
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}
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func TestGoexitDeadlock(t *testing.T) {
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output := runTestProg(t, "testprog", "GoexitDeadlock")
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want := "no goroutines (main called runtime.Goexit) - deadlock!"
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if !strings.Contains(output, want) {
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t.Fatalf("output:\n%s\n\nwant output containing: %s", output, want)
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}
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}
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func TestStackOverflow(t *testing.T) {
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output := runTestProg(t, "testprog", "StackOverflow")
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want := "runtime: goroutine stack exceeds 1474560-byte limit\nfatal error: stack overflow"
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if !strings.HasPrefix(output, want) {
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t.Fatalf("output does not start with %q:\n%s", want, output)
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}
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}
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func TestThreadExhaustion(t *testing.T) {
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output := runTestProg(t, "testprog", "ThreadExhaustion")
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want := "runtime: program exceeds 10-thread limit\nfatal error: thread exhaustion"
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if !strings.HasPrefix(output, want) {
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t.Fatalf("output does not start with %q:\n%s", want, output)
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}
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}
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func TestRecursivePanic(t *testing.T) {
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output := runTestProg(t, "testprog", "RecursivePanic")
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want := `wrap: bad
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panic: again
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`
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if !strings.HasPrefix(output, want) {
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t.Fatalf("output does not start with %q:\n%s", want, output)
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}
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}
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func TestGoexitCrash(t *testing.T) {
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output := runTestProg(t, "testprog", "GoexitExit")
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want := "no goroutines (main called runtime.Goexit) - deadlock!"
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if !strings.Contains(output, want) {
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t.Fatalf("output:\n%s\n\nwant output containing: %s", output, want)
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}
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}
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func TestGoexitDefer(t *testing.T) {
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c := make(chan struct{})
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go func() {
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defer func() {
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r := recover()
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if r != nil {
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t.Errorf("non-nil recover during Goexit")
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}
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c <- struct{}{}
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}()
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runtime.Goexit()
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}()
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// Note: if the defer fails to run, we will get a deadlock here
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<-c
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}
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func TestGoNil(t *testing.T) {
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output := runTestProg(t, "testprog", "GoNil")
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want := "go of nil func value"
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if !strings.Contains(output, want) {
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t.Fatalf("output:\n%s\n\nwant output containing: %s", output, want)
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}
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}
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func TestMainGoroutineID(t *testing.T) {
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output := runTestProg(t, "testprog", "MainGoroutineID")
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want := "panic: test\n\ngoroutine 1 [running]:\n"
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if !strings.HasPrefix(output, want) {
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t.Fatalf("output does not start with %q:\n%s", want, output)
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}
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}
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func TestNoHelperGoroutines(t *testing.T) {
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output := runTestProg(t, "testprog", "NoHelperGoroutines")
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matches := regexp.MustCompile(`goroutine [0-9]+ \[`).FindAllStringSubmatch(output, -1)
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if len(matches) != 1 || matches[0][0] != "goroutine 1 [" {
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t.Fatalf("want to see only goroutine 1, see:\n%s", output)
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}
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}
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func TestBreakpoint(t *testing.T) {
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output := runTestProg(t, "testprog", "Breakpoint")
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want := "runtime.Breakpoint()"
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if !strings.Contains(output, want) {
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t.Fatalf("output:\n%s\n\nwant output containing: %s", output, want)
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}
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}
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func TestGoexitInPanic(t *testing.T) {
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// see issue 8774: this code used to trigger an infinite recursion
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output := runTestProg(t, "testprog", "GoexitInPanic")
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want := "fatal error: no goroutines (main called runtime.Goexit) - deadlock!"
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if !strings.HasPrefix(output, want) {
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t.Fatalf("output does not start with %q:\n%s", want, output)
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}
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}
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// Issue 14965: Runtime panics should be of type runtime.Error
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func TestRuntimePanicWithRuntimeError(t *testing.T) {
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testCases := [...]func(){
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0: func() {
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var m map[uint64]bool
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m[1234] = true
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},
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1: func() {
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ch := make(chan struct{})
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close(ch)
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close(ch)
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},
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2: func() {
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var ch = make(chan struct{})
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close(ch)
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ch <- struct{}{}
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},
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3: func() {
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var s = make([]int, 2)
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_ = s[2]
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},
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4: func() {
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n := -1
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_ = make(chan bool, n)
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},
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5: func() {
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close((chan bool)(nil))
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},
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}
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for i, fn := range testCases {
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got := panicValue(fn)
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if _, ok := got.(runtime.Error); !ok {
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t.Errorf("test #%d: recovered value %v(type %T) does not implement runtime.Error", i, got, got)
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}
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}
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}
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func panicValue(fn func()) (recovered interface{}) {
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defer func() {
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recovered = recover()
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}()
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fn()
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return
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}
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func TestPanicAfterGoexit(t *testing.T) {
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// an uncaught panic should still work after goexit
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output := runTestProg(t, "testprog", "PanicAfterGoexit")
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want := "panic: hello"
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if !strings.HasPrefix(output, want) {
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t.Fatalf("output does not start with %q:\n%s", want, output)
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}
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}
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func TestRecoveredPanicAfterGoexit(t *testing.T) {
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output := runTestProg(t, "testprog", "RecoveredPanicAfterGoexit")
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want := "fatal error: no goroutines (main called runtime.Goexit) - deadlock!"
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if !strings.HasPrefix(output, want) {
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t.Fatalf("output does not start with %q:\n%s", want, output)
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}
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}
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func TestRecoverBeforePanicAfterGoexit(t *testing.T) {
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// 1. defer a function that recovers
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// 2. defer a function that panics
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// 3. call goexit
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// Goexit should run the #2 defer. Its panic
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// should be caught by the #1 defer, and execution
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// should resume in the caller. Like the Goexit
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// never happened!
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defer func() {
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r := recover()
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if r == nil {
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panic("bad recover")
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}
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}()
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defer func() {
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panic("hello")
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}()
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runtime.Goexit()
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}
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func TestNetpollDeadlock(t *testing.T) {
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t.Parallel()
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output := runTestProg(t, "testprognet", "NetpollDeadlock")
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want := "done\n"
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if !strings.HasSuffix(output, want) {
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t.Fatalf("output does not start with %q:\n%s", want, output)
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}
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}
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func TestPanicTraceback(t *testing.T) {
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t.Parallel()
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output := runTestProg(t, "testprog", "PanicTraceback")
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want := "panic: hello"
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if !strings.HasPrefix(output, want) {
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t.Fatalf("output does not start with %q:\n%s", want, output)
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}
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// Check functions in the traceback.
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fns := []string{"main.pt1.func1", "panic", "main.pt2.func1", "panic", "main.pt2", "main.pt1"}
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for _, fn := range fns {
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re := regexp.MustCompile(`(?m)^` + regexp.QuoteMeta(fn) + `\(.*\n`)
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idx := re.FindStringIndex(output)
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if idx == nil {
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t.Fatalf("expected %q function in traceback:\n%s", fn, output)
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}
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output = output[idx[1]:]
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}
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}
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func testPanicDeadlock(t *testing.T, name string, want string) {
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// test issue 14432
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output := runTestProg(t, "testprog", name)
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if !strings.HasPrefix(output, want) {
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t.Fatalf("output does not start with %q:\n%s", want, output)
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}
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}
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func TestPanicDeadlockGosched(t *testing.T) {
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testPanicDeadlock(t, "GoschedInPanic", "panic: errorThatGosched\n\n")
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}
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func TestPanicDeadlockSyscall(t *testing.T) {
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testPanicDeadlock(t, "SyscallInPanic", "1\n2\npanic: 3\n\n")
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}
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func TestPanicLoop(t *testing.T) {
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output := runTestProg(t, "testprog", "PanicLoop")
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if want := "panic while printing panic value"; !strings.Contains(output, want) {
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t.Errorf("output does not contain %q:\n%s", want, output)
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}
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}
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func TestMemPprof(t *testing.T) {
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testenv.MustHaveGoRun(t)
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exe, err := buildTestProg(t, "testprog")
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if err != nil {
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t.Fatal(err)
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}
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got, err := testEnv(exec.Command(exe, "MemProf")).CombinedOutput()
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if err != nil {
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t.Fatal(err)
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}
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fn := strings.TrimSpace(string(got))
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defer os.Remove(fn)
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cmd := testEnv(exec.Command(testenv.GoToolPath(t), "tool", "pprof", "-alloc_space", "-top", exe, fn))
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found := false
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for i, e := range cmd.Env {
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if strings.HasPrefix(e, "PPROF_TMPDIR=") {
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cmd.Env[i] = "PPROF_TMPDIR=" + os.TempDir()
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found = true
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break
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}
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}
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if !found {
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cmd.Env = append(cmd.Env, "PPROF_TMPDIR="+os.TempDir())
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}
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top, err := cmd.CombinedOutput()
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t.Logf("%s", top)
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|
if err != nil {
|
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t.Fatal(err)
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}
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if !bytes.Contains(top, []byte("MemProf")) {
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t.Error("missing MemProf in pprof output")
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}
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}
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var concurrentMapTest = flag.Bool("run_concurrent_map_tests", false, "also run flaky concurrent map tests")
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func TestConcurrentMapWrites(t *testing.T) {
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if !*concurrentMapTest {
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t.Skip("skipping without -run_concurrent_map_tests")
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}
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testenv.MustHaveGoRun(t)
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output := runTestProg(t, "testprog", "concurrentMapWrites")
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want := "fatal error: concurrent map writes"
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if !strings.HasPrefix(output, want) {
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t.Fatalf("output does not start with %q:\n%s", want, output)
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}
|
|
}
|
|
func TestConcurrentMapReadWrite(t *testing.T) {
|
|
if !*concurrentMapTest {
|
|
t.Skip("skipping without -run_concurrent_map_tests")
|
|
}
|
|
testenv.MustHaveGoRun(t)
|
|
output := runTestProg(t, "testprog", "concurrentMapReadWrite")
|
|
want := "fatal error: concurrent map read and map write"
|
|
if !strings.HasPrefix(output, want) {
|
|
t.Fatalf("output does not start with %q:\n%s", want, output)
|
|
}
|
|
}
|
|
func TestConcurrentMapIterateWrite(t *testing.T) {
|
|
if !*concurrentMapTest {
|
|
t.Skip("skipping without -run_concurrent_map_tests")
|
|
}
|
|
testenv.MustHaveGoRun(t)
|
|
output := runTestProg(t, "testprog", "concurrentMapIterateWrite")
|
|
want := "fatal error: concurrent map iteration and map write"
|
|
if !strings.HasPrefix(output, want) {
|
|
t.Fatalf("output does not start with %q:\n%s", want, output)
|
|
}
|
|
}
|