mirror of
https://github.com/ceph/ceph-csi.git
synced 2024-12-29 00:10:23 +00:00
119 lines
3.0 KiB
Go
119 lines
3.0 KiB
Go
/*
|
|
*
|
|
* Copyright 2017 gRPC authors.
|
|
*
|
|
* Licensed under the Apache License, Version 2.0 (the "License");
|
|
* you may not use this file except in compliance with the License.
|
|
* You may obtain a copy of the License at
|
|
*
|
|
* http://www.apache.org/licenses/LICENSE-2.0
|
|
*
|
|
* Unless required by applicable law or agreed to in writing, software
|
|
* distributed under the License is distributed on an "AS IS" BASIS,
|
|
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
* See the License for the specific language governing permissions and
|
|
* limitations under the License.
|
|
*
|
|
*/
|
|
|
|
// Package leakcheck contains functions to check leaked goroutines.
|
|
//
|
|
// Call "defer leakcheck.Check(t)" at the beginning of tests.
|
|
package leakcheck
|
|
|
|
import (
|
|
"runtime"
|
|
"sort"
|
|
"strings"
|
|
"time"
|
|
)
|
|
|
|
var goroutinesToIgnore = []string{
|
|
"testing.Main(",
|
|
"testing.tRunner(",
|
|
"testing.(*M).",
|
|
"runtime.goexit",
|
|
"created by runtime.gc",
|
|
"created by runtime/trace.Start",
|
|
"interestingGoroutines",
|
|
"runtime.MHeap_Scavenger",
|
|
"signal.signal_recv",
|
|
"sigterm.handler",
|
|
"runtime_mcall",
|
|
"(*loggingT).flushDaemon",
|
|
"goroutine in C code",
|
|
}
|
|
|
|
// RegisterIgnoreGoroutine appends s into the ignore goroutine list. The
|
|
// goroutines whose stack trace contains s will not be identified as leaked
|
|
// goroutines. Not thread-safe, only call this function in init().
|
|
func RegisterIgnoreGoroutine(s string) {
|
|
goroutinesToIgnore = append(goroutinesToIgnore, s)
|
|
}
|
|
|
|
func ignore(g string) bool {
|
|
sl := strings.SplitN(g, "\n", 2)
|
|
if len(sl) != 2 {
|
|
return true
|
|
}
|
|
stack := strings.TrimSpace(sl[1])
|
|
if strings.HasPrefix(stack, "testing.RunTests") {
|
|
return true
|
|
}
|
|
|
|
if stack == "" {
|
|
return true
|
|
}
|
|
|
|
for _, s := range goroutinesToIgnore {
|
|
if strings.Contains(stack, s) {
|
|
return true
|
|
}
|
|
}
|
|
|
|
return false
|
|
}
|
|
|
|
// interestingGoroutines returns all goroutines we care about for the purpose of
|
|
// leak checking. It excludes testing or runtime ones.
|
|
func interestingGoroutines() (gs []string) {
|
|
buf := make([]byte, 2<<20)
|
|
buf = buf[:runtime.Stack(buf, true)]
|
|
for _, g := range strings.Split(string(buf), "\n\n") {
|
|
if !ignore(g) {
|
|
gs = append(gs, g)
|
|
}
|
|
}
|
|
sort.Strings(gs)
|
|
return
|
|
}
|
|
|
|
// Errorfer is the interface that wraps the Errorf method. It's a subset of
|
|
// testing.TB to make it easy to use Check.
|
|
type Errorfer interface {
|
|
Errorf(format string, args ...interface{})
|
|
}
|
|
|
|
func check(efer Errorfer, timeout time.Duration) {
|
|
// Loop, waiting for goroutines to shut down.
|
|
// Wait up to timeout, but finish as quickly as possible.
|
|
deadline := time.Now().Add(timeout)
|
|
var leaked []string
|
|
for time.Now().Before(deadline) {
|
|
if leaked = interestingGoroutines(); len(leaked) == 0 {
|
|
return
|
|
}
|
|
time.Sleep(50 * time.Millisecond)
|
|
}
|
|
for _, g := range leaked {
|
|
efer.Errorf("Leaked goroutine: %v", g)
|
|
}
|
|
}
|
|
|
|
// Check looks at the currently-running goroutines and checks if there are any
|
|
// interestring (created by gRPC) goroutines leaked. It waits up to 10 seconds
|
|
// in the error cases.
|
|
func Check(efer Errorfer) {
|
|
check(efer, 10*time.Second)
|
|
}
|