import (
"bytes"
+ "fmt"
"internal/testenv"
"internal/trace"
"net"
"os"
"runtime"
. "runtime/trace"
+ "strings"
"sync"
"testing"
+ "text/tabwriter"
"time"
)
// on a channel, in a select or otherwise. So we kick off goroutines
// that need to block first in the hope that while we are executing
// the rest of the test, they will block.
- go func() {
+ go func() { // func1
select {}
}()
- go func() {
+ go func() { // func2
var c chan int
c <- 0
}()
- go func() {
+ go func() { // func3
var c chan int
<-c
}()
done1 := make(chan bool)
- go func() {
+ go func() { // func4
<-done1
}()
done2 := make(chan bool)
- go func() {
+ go func() { // func5
done2 <- true
}()
c1 := make(chan int)
c2 := make(chan int)
- go func() {
+ go func() { // func6
select {
case <-c1:
case <-c2:
}()
var mu sync.Mutex
mu.Lock()
- go func() {
+ go func() { // func7
mu.Lock()
mu.Unlock()
}()
var wg sync.WaitGroup
wg.Add(1)
- go func() {
+ go func() { // func8
wg.Wait()
}()
cv := sync.NewCond(&sync.Mutex{})
- go func() {
+ go func() { // func9
cv.L.Lock()
cv.Wait()
cv.L.Unlock()
if err != nil {
t.Fatalf("failed to listen: %v", err)
}
- go func() {
+ go func() { // func10
c, err := ln.Accept()
if err != nil {
t.Errorf("failed to accept: %v", err)
defer rp.Close()
defer wp.Close()
pipeReadDone := make(chan bool)
- go func() {
+ go func() { // func11
var data [1]byte
rp.Read(data[:])
pipeReadDone <- true
wp.Write(data[:])
<-pipeReadDone
+ oldGoMaxProcs := runtime.GOMAXPROCS(1)
+
Stop()
+
+ runtime.GOMAXPROCS(oldGoMaxProcs)
+
events, _ := parseTrace(t, buf)
// Now check that the stacks are correct.
- type frame struct {
- Fn string
- Line int
- }
type eventDesc struct {
Type byte
Stk []frame
want := []eventDesc{
{trace.EvGCStart, []frame{
{"runtime.GC", 0},
- {"runtime/trace_test.TestTraceSymbolize", 107},
+ {"runtime/trace_test.TestTraceSymbolize", 0},
{"testing.tRunner", 0},
}},
{trace.EvGoStart, []frame{
- {"runtime/trace_test.TestTraceSymbolize.func1", 37},
+ {"runtime/trace_test.TestTraceSymbolize.func1", 0},
}},
{trace.EvGoSched, []frame{
- {"runtime/trace_test.TestTraceSymbolize", 108},
+ {"runtime/trace_test.TestTraceSymbolize", 111},
{"testing.tRunner", 0},
}},
{trace.EvGoCreate, []frame{
- {"runtime/trace_test.TestTraceSymbolize", 37},
+ {"runtime/trace_test.TestTraceSymbolize", 40},
{"testing.tRunner", 0},
}},
{trace.EvGoStop, []frame{
{"runtime.block", 0},
- {"runtime/trace_test.TestTraceSymbolize.func1", 38},
+ {"runtime/trace_test.TestTraceSymbolize.func1", 0},
}},
{trace.EvGoStop, []frame{
{"runtime.chansend1", 0},
- {"runtime/trace_test.TestTraceSymbolize.func2", 42},
+ {"runtime/trace_test.TestTraceSymbolize.func2", 0},
}},
{trace.EvGoStop, []frame{
{"runtime.chanrecv1", 0},
- {"runtime/trace_test.TestTraceSymbolize.func3", 46},
+ {"runtime/trace_test.TestTraceSymbolize.func3", 0},
}},
{trace.EvGoBlockRecv, []frame{
{"runtime.chanrecv1", 0},
- {"runtime/trace_test.TestTraceSymbolize.func4", 50},
+ {"runtime/trace_test.TestTraceSymbolize.func4", 0},
}},
{trace.EvGoUnblock, []frame{
{"runtime.chansend1", 0},
- {"runtime/trace_test.TestTraceSymbolize", 110},
+ {"runtime/trace_test.TestTraceSymbolize", 113},
{"testing.tRunner", 0},
}},
{trace.EvGoBlockSend, []frame{
{"runtime.chansend1", 0},
- {"runtime/trace_test.TestTraceSymbolize.func5", 54},
+ {"runtime/trace_test.TestTraceSymbolize.func5", 0},
}},
{trace.EvGoUnblock, []frame{
{"runtime.chanrecv1", 0},
- {"runtime/trace_test.TestTraceSymbolize", 111},
+ {"runtime/trace_test.TestTraceSymbolize", 114},
{"testing.tRunner", 0},
}},
{trace.EvGoBlockSelect, []frame{
{"runtime.selectgo", 0},
- {"runtime/trace_test.TestTraceSymbolize.func6", 59},
+ {"runtime/trace_test.TestTraceSymbolize.func6", 0},
}},
{trace.EvGoUnblock, []frame{
{"runtime.selectgo", 0},
- {"runtime/trace_test.TestTraceSymbolize", 112},
+ {"runtime/trace_test.TestTraceSymbolize", 115},
{"testing.tRunner", 0},
}},
{trace.EvGoBlockSync, []frame{
{"sync.(*Mutex).Lock", 0},
- {"runtime/trace_test.TestTraceSymbolize.func7", 67},
+ {"runtime/trace_test.TestTraceSymbolize.func7", 0},
}},
{trace.EvGoUnblock, []frame{
{"sync.(*Mutex).Unlock", 0},
- {"runtime/trace_test.TestTraceSymbolize", 116},
+ {"runtime/trace_test.TestTraceSymbolize", 0},
{"testing.tRunner", 0},
}},
{trace.EvGoBlockSync, []frame{
{"sync.(*WaitGroup).Wait", 0},
- {"runtime/trace_test.TestTraceSymbolize.func8", 73},
+ {"runtime/trace_test.TestTraceSymbolize.func8", 0},
}},
{trace.EvGoUnblock, []frame{
{"sync.(*WaitGroup).Add", 0},
{"sync.(*WaitGroup).Done", 0},
- {"runtime/trace_test.TestTraceSymbolize", 117},
+ {"runtime/trace_test.TestTraceSymbolize", 120},
{"testing.tRunner", 0},
}},
{trace.EvGoBlockCond, []frame{
{"sync.(*Cond).Wait", 0},
- {"runtime/trace_test.TestTraceSymbolize.func9", 78},
+ {"runtime/trace_test.TestTraceSymbolize.func9", 0},
}},
{trace.EvGoUnblock, []frame{
{"sync.(*Cond).Signal", 0},
- {"runtime/trace_test.TestTraceSymbolize", 118},
+ {"runtime/trace_test.TestTraceSymbolize", 0},
{"testing.tRunner", 0},
}},
{trace.EvGoSleep, []frame{
{"time.Sleep", 0},
- {"runtime/trace_test.TestTraceSymbolize", 109},
+ {"runtime/trace_test.TestTraceSymbolize", 0},
+ {"testing.tRunner", 0},
+ }},
+ {trace.EvGomaxprocs, []frame{
+ {"runtime.startTheWorld", 0}, // this is when the current gomaxprocs is logged.
+ {"runtime.GOMAXPROCS", 0},
+ {"runtime/trace_test.TestTraceSymbolize", 0},
{"testing.tRunner", 0},
}},
}
{"net.(*netFD).accept", 0},
{"net.(*TCPListener).accept", 0},
{"net.(*TCPListener).Accept", 0},
- {"runtime/trace_test.TestTraceSymbolize.func10", 86},
+ {"runtime/trace_test.TestTraceSymbolize.func10", 0},
}},
{trace.EvGoSysCall, []frame{
{"syscall.read", 0},
{"internal/poll.(*FD).Read", 0},
{"os.(*File).read", 0},
{"os.(*File).Read", 0},
- {"runtime/trace_test.TestTraceSymbolize.func11", 102},
+ {"runtime/trace_test.TestTraceSymbolize.func11", 0},
}},
}...)
}
matched[i] = true
}
}
- for i, m := range matched {
- if m {
+ for i, w := range want {
+ if matched[i] {
continue
}
- w := want[i]
- t.Errorf("did not match event %v at %v:%v", trace.EventDescriptions[w.Type].Name, w.Stk[0].Fn, w.Stk[0].Line)
- t.Errorf("seen the following events of this type:")
- for _, ev := range events {
- if ev.Type != w.Type {
- continue
- }
- for _, f := range ev.Stk {
- t.Logf(" %v :: %s:%v", f.Fn, f.File, f.Line)
+ seen, n := dumpEventStacks(w.Type, events)
+ t.Errorf("Did not match event %v with stack\n%s\nSeen %d events of the type\n%s",
+ trace.EventDescriptions[w.Type].Name, dumpFrames(w.Stk), n, seen)
+ }
+}
+
+func dumpEventStacks(typ byte, events []*trace.Event) ([]byte, int) {
+ matched := 0
+ o := new(bytes.Buffer)
+ tw := tabwriter.NewWriter(o, 0, 8, 0, '\t', 0)
+ for _, ev := range events {
+ if ev.Type != typ {
+ continue
+ }
+ matched++
+ fmt.Fprintf(tw, "Offset %d\n", ev.Off)
+ for _, f := range ev.Stk {
+ fname := f.File
+ if idx := strings.Index(fname, "/go/src/"); idx > 0 {
+ fname = fname[idx:]
}
- t.Logf("---")
+ fmt.Fprintf(tw, " %v\t%s:%d\n", f.Fn, fname, f.Line)
}
- t.Logf("======")
}
+ tw.Flush()
+ return o.Bytes(), matched
+}
+
+type frame struct {
+ Fn string
+ Line int
+}
+
+func dumpFrames(frames []frame) []byte {
+ o := new(bytes.Buffer)
+ tw := tabwriter.NewWriter(o, 0, 8, 0, '\t', 0)
+
+ for _, f := range frames {
+ fmt.Fprintf(tw, " %v\t :%d\n", f.Fn, f.Line)
+ }
+ tw.Flush()
+ return o.Bytes()
}