runtime: shorten tests in all.bash

This cuts 23 seconds from all.bash on my MacBook Pro.

Change-Id: Ibc4d7c01660b9e9ebd088dd55ba993f0d7ec6aa3
Reviewed-on: https://go-review.googlesource.com/73991
Reviewed-by: Ian Lance Taylor <iant@golang.org>

src/cmd/dist/test.go

@@ -402,9 +402,9 @@ func (t *tester) registerTests() {
 		testName := "runtime:cpu124"
 		t.tests = append(t.tests, distTest{
 			name:    testName,
-			heading: "GOMAXPROCS=2 runtime -cpu=1,2,4",
+			heading: "GOMAXPROCS=2 runtime -cpu=1,2,4 -quick",
 			fn: func(dt *distTest) error {
-				cmd := t.addCmd(dt, "src", "go", "test", "-short", t.timeout(300), t.tags(), "runtime", "-cpu=1,2,4")
+				cmd := t.addCmd(dt, "src", "go", "test", "-short", t.timeout(300), t.tags(), "runtime", "-cpu=1,2,4", "-quick")
 				// We set GOMAXPROCS=2 in addition to -cpu=1,2,4 in order to test runtime bootstrap code,
 				// creation of first goroutines and first garbage collections in the parallel setting.
 				cmd.Env = append(os.Environ(), "GOMAXPROCS=2")

src/runtime/crash_test.go

@@ -44,6 +44,10 @@ type buildexe struct {
 }
 
 func runTestProg(t *testing.T, binary, name string, env ...string) string {
+	if *flagQuick {
+		t.Skip("-quick")
+	}
+
 	testenv.MustHaveGoBuild(t)
 
 	exe, err := buildTestProg(t, binary)
@@ -53,6 +57,9 @@ func runTestProg(t *testing.T, binary, name string, env ...string) string {
 
 	cmd := testenv.CleanCmdEnv(exec.Command(exe, name))
 	cmd.Env = append(cmd.Env, env...)
+	if testing.Short() {
+		cmd.Env = append(cmd.Env, "RUNTIME_TEST_SHORT=1")
+	}
 	var b bytes.Buffer
 	cmd.Stdout = &b
 	cmd.Stderr = &b
@@ -93,6 +100,10 @@ func runTestProg(t *testing.T, binary, name string, env ...string) string {
 }
 
 func buildTestProg(t *testing.T, binary string, flags ...string) (string, error) {
+	if *flagQuick {
+		t.Skip("-quick")
+	}
+
 	checkStaleRuntime(t)
 
 	testprog.Lock()

src/runtime/map_test.go

@@ -244,7 +244,7 @@ func testConcurrentReadsAfterGrowth(t *testing.T, useReflect bool) {
 	numGrowStep := 250
 	numReader := 16
 	if testing.Short() {
-		numLoop, numGrowStep = 2, 500
+		numLoop, numGrowStep = 2, 100
 	}
 	for i := 0; i < numLoop; i++ {
 		m := make(map[int]int, 0)

src/runtime/memmove_test.go

@@ -9,6 +9,7 @@ import (
 	"encoding/binary"
 	"fmt"
 	"internal/race"
+	"internal/testenv"
 	. "runtime"
 	"testing"
 )
@@ -88,6 +89,10 @@ func TestMemmoveAlias(t *testing.T) {
 }
 
 func TestMemmoveLarge0x180000(t *testing.T) {
+	if testing.Short() && testenv.Builder() == "" {
+		t.Skip("-short")
+	}
+
 	t.Parallel()
 	if race.Enabled {
 		t.Skip("skipping large memmove test under race detector")
@@ -96,6 +101,10 @@ func TestMemmoveLarge0x180000(t *testing.T) {
 }
 
 func TestMemmoveOverlapLarge0x120000(t *testing.T) {
+	if testing.Short() && testenv.Builder() == "" {
+		t.Skip("-short")
+	}
+
 	t.Parallel()
 	if race.Enabled {
 		t.Skip("skipping large memmove test under race detector")

src/runtime/mfinal_test.go

@@ -243,6 +243,10 @@ var (
 )
 
 func TestDeferKeepAlive(t *testing.T) {
+	if *flagQuick {
+		t.Skip("-quick")
+	}
+
 	// See issue 21402.
 	t.Parallel()
 	type T *int // needs to be a pointer base type to avoid tinyalloc and its never-finalized behavior.

src/runtime/runtime_test.go

@@ -5,6 +5,7 @@
 package runtime_test
 
 import (
+	"flag"
 	"io"
 	. "runtime"
 	"runtime/debug"
@@ -13,6 +14,8 @@ import (
 	"unsafe"
 )
 
+var flagQuick = flag.Bool("quick", false, "skip slow tests, for second run in all.bash")
+
 func init() {
 	// We're testing the runtime, so make tracebacks show things
 	// in the runtime. This only raises the level, so it won't

src/runtime/testdata/testprogcgo/callback.go

@@ -29,6 +29,7 @@ import "C"
 
 import (
 	"fmt"
+	"os"
 	"runtime"
 )
 
@@ -63,7 +64,10 @@ func grow1(x, sum *int) int {
 }
 
 func CgoCallbackGC() {
-	const P = 100
+	P := 100
+	if os.Getenv("RUNTIME_TESTING_SHORT") != "" {
+		P = 10
+	}
 	done := make(chan bool)
 	// allocate a bunch of stack frames and spray them with pointers
 	for i := 0; i < P; i++ {

src/runtime/testdata/testprogcgo/cgo.go

@@ -52,7 +52,11 @@ func CgoSignalDeadlock() {
 	time.Sleep(time.Millisecond)
 	start := time.Now()
 	var times []time.Duration
-	for i := 0; i < 64; i++ {
+	n := 64
+	if os.Getenv("RUNTIME_TEST_SHORT") != "" {
+		n = 16
+	}
+	for i := 0; i < n; i++ {
 		go func() {
 			runtime.LockOSThread()
 			select {}