mirror of
https://github.com/DNSCrypt/dnscrypt-proxy.git
synced 2024-12-12 22:36:32 +01:00
72 lines
1.8 KiB
Go
72 lines
1.8 KiB
Go
package dns
|
|
|
|
import (
|
|
"fmt"
|
|
"os"
|
|
"runtime"
|
|
"sort"
|
|
"strings"
|
|
"testing"
|
|
"time"
|
|
)
|
|
|
|
// copied from net/http/main_test.go
|
|
|
|
func interestingGoroutines() (gs []string) {
|
|
buf := make([]byte, 2<<20)
|
|
buf = buf[:runtime.Stack(buf, true)]
|
|
for _, g := range strings.Split(string(buf), "\n\n") {
|
|
sl := strings.SplitN(g, "\n", 2)
|
|
if len(sl) != 2 {
|
|
continue
|
|
}
|
|
stack := strings.TrimSpace(sl[1])
|
|
if stack == "" ||
|
|
strings.Contains(stack, "testing.(*M).before.func1") ||
|
|
strings.Contains(stack, "os/signal.signal_recv") ||
|
|
strings.Contains(stack, "created by net.startServer") ||
|
|
strings.Contains(stack, "created by testing.RunTests") ||
|
|
strings.Contains(stack, "closeWriteAndWait") ||
|
|
strings.Contains(stack, "testing.Main(") ||
|
|
strings.Contains(stack, "testing.(*T).Run(") ||
|
|
// These only show up with GOTRACEBACK=2; Issue 5005 (comment 28)
|
|
strings.Contains(stack, "runtime.goexit") ||
|
|
strings.Contains(stack, "created by runtime.gc") ||
|
|
strings.Contains(stack, "dns.interestingGoroutines") ||
|
|
strings.Contains(stack, "runtime.MHeap_Scavenger") {
|
|
continue
|
|
}
|
|
gs = append(gs, stack)
|
|
}
|
|
sort.Strings(gs)
|
|
return
|
|
}
|
|
|
|
func goroutineLeaked() error {
|
|
if testing.Short() {
|
|
// Don't worry about goroutine leaks in -short mode or in
|
|
// benchmark mode. Too distracting when there are false positives.
|
|
return nil
|
|
}
|
|
|
|
var stackCount map[string]int
|
|
for i := 0; i < 5; i++ {
|
|
n := 0
|
|
stackCount = make(map[string]int)
|
|
gs := interestingGoroutines()
|
|
for _, g := range gs {
|
|
stackCount[g]++
|
|
n++
|
|
}
|
|
if n == 0 {
|
|
return nil
|
|
}
|
|
// Wait for goroutines to schedule and die off:
|
|
time.Sleep(100 * time.Millisecond)
|
|
}
|
|
for stack, count := range stackCount {
|
|
fmt.Fprintf(os.Stderr, "%d instances of:\n%s\n", count, stack)
|
|
}
|
|
return fmt.Errorf("too many goroutines running after dns test(s)")
|
|
}
|