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replace pkg/locker with github.com/moby/locker 

Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
This commit is contained in:
Sebastiaan van Stijn 2020-09-10 22:15:40 +02:00
parent b9da78cef2
commit 5ca758199d
No known key found for this signature in database
GPG Key ID: 76698F39D527CE8C
18 changed files with 326 additions and 264 deletions
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2
daemon/daemon.go
View File

@ -55,7 +55,6 @@ import (
"github.com/docker/docker/libcontainerd"
libcontainerdtypes "github.com/docker/docker/libcontainerd/types"
"github.com/docker/docker/pkg/idtools"
"github.com/docker/docker/pkg/locker"
"github.com/docker/docker/pkg/plugingetter"
"github.com/docker/docker/pkg/system"
"github.com/docker/docker/pkg/truncindex"
@ -68,6 +67,7 @@ import (
"github.com/docker/libnetwork"
"github.com/docker/libnetwork/cluster"
nwconfig "github.com/docker/libnetwork/config"
"github.com/moby/locker"
"github.com/pkg/errors"
"golang.org/x/sync/semaphore"
)

2
daemon/graphdriver/aufs/aufs.go
View File

@ -42,8 +42,8 @@ import (
"github.com/docker/docker/pkg/containerfs"
"github.com/docker/docker/pkg/directory"
"github.com/docker/docker/pkg/idtools"
"github.com/docker/docker/pkg/locker"
"github.com/docker/docker/pkg/system"
"github.com/moby/locker"
"github.com/moby/sys/mount"
"github.com/opencontainers/selinux/go-selinux/label"
"github.com/pkg/errors"

2
daemon/graphdriver/devmapper/driver.go
View File

@ -13,8 +13,8 @@ import (
"github.com/docker/docker/pkg/containerfs"
"github.com/docker/docker/pkg/devicemapper"
"github.com/docker/docker/pkg/idtools"
"github.com/docker/docker/pkg/locker"
units "github.com/docker/go-units"
"github.com/moby/locker"
"github.com/moby/sys/mount"
"github.com/sirupsen/logrus"
"golang.org/x/sys/unix"

2
daemon/graphdriver/fuse-overlayfs/fuseoverlayfs.go
View File

@ -22,9 +22,9 @@ import (
"github.com/docker/docker/pkg/containerfs"
"github.com/docker/docker/pkg/directory"
"github.com/docker/docker/pkg/idtools"
"github.com/docker/docker/pkg/locker"
"github.com/docker/docker/pkg/parsers/kernel"
"github.com/docker/docker/pkg/system"
"github.com/moby/locker"
"github.com/moby/sys/mount"
"github.com/opencontainers/selinux/go-selinux/label"
"github.com/pkg/errors"

2
daemon/graphdriver/overlay/overlay.go
View File

@ -19,9 +19,9 @@ import (
"github.com/docker/docker/pkg/containerfs"
"github.com/docker/docker/pkg/fsutils"
"github.com/docker/docker/pkg/idtools"
"github.com/docker/docker/pkg/locker"
"github.com/docker/docker/pkg/parsers"
"github.com/docker/docker/pkg/system"
"github.com/moby/locker"
"github.com/moby/sys/mount"
"github.com/opencontainers/selinux/go-selinux/label"
"github.com/sirupsen/logrus"

2
daemon/graphdriver/overlay2/overlay.go
View File

@ -25,10 +25,10 @@ import (
"github.com/docker/docker/pkg/directory"
"github.com/docker/docker/pkg/fsutils"
"github.com/docker/docker/pkg/idtools"
"github.com/docker/docker/pkg/locker"
"github.com/docker/docker/pkg/parsers"
"github.com/docker/docker/pkg/system"
units "github.com/docker/go-units"
"github.com/moby/locker"
"github.com/moby/sys/mount"
"github.com/opencontainers/selinux/go-selinux/label"
"github.com/sirupsen/logrus"

2
integration/plugin/logging/helpers_test.go
View File

@ -9,8 +9,8 @@ import (
"time"
"github.com/docker/docker/api/types"
"github.com/docker/docker/pkg/locker"
"github.com/docker/docker/testutil/fixtures/plugin"
"github.com/moby/locker"
"github.com/pkg/errors"
)

2
integration/plugin/volumes/helpers_test.go
View File

@ -9,8 +9,8 @@ import (
"time"
"github.com/docker/docker/api/types"
"github.com/docker/docker/pkg/locker"
"github.com/docker/docker/testutil/fixtures/plugin"
"github.com/moby/locker"
"github.com/pkg/errors"
"gotest.tools/v3/assert"
)

2
layer/layer_store.go
View File

@ -12,10 +12,10 @@ import (
"github.com/docker/distribution"
"github.com/docker/docker/daemon/graphdriver"
"github.com/docker/docker/pkg/idtools"
"github.com/docker/docker/pkg/locker"
"github.com/docker/docker/pkg/plugingetter"
"github.com/docker/docker/pkg/stringid"
"github.com/docker/docker/pkg/system"
"github.com/moby/locker"
digest "github.com/opencontainers/go-digest"
"github.com/sirupsen/logrus"
"github.com/vbatts/tar-split/tar/asm"

96
pkg/locker/locker.go
View File

@ -14,99 +14,17 @@ waiting for the lock.
package locker // import "github.com/docker/docker/pkg/locker"
import (
"errors"
"sync"
"sync/atomic"
"github.com/moby/locker"
)
// ErrNoSuchLock is returned when the requested lock does not exist
var ErrNoSuchLock = errors.New("no such lock")
// Deprecated: use github.com/moby/locker.ErrNoSuchLock
var ErrNoSuchLock = locker.ErrNoSuchLock
// Locker provides a locking mechanism based on the passed in reference name
type Locker struct {
mu sync.Mutex
locks map[string]*lockCtr
}
// lockCtr is used by Locker to represent a lock with a given name.
type lockCtr struct {
mu sync.Mutex
// waiters is the number of waiters waiting to acquire the lock
// this is int32 instead of uint32 so we can add `-1` in `dec()`
waiters int32
}
// inc increments the number of waiters waiting for the lock
func (l *lockCtr) inc() {
atomic.AddInt32(&l.waiters, 1)
}
// dec decrements the number of waiters waiting on the lock
func (l *lockCtr) dec() {
atomic.AddInt32(&l.waiters, -1)
}
// count gets the current number of waiters
func (l *lockCtr) count() int32 {
return atomic.LoadInt32(&l.waiters)
}
// Lock locks the mutex
func (l *lockCtr) Lock() {
l.mu.Lock()
}
// Unlock unlocks the mutex
func (l *lockCtr) Unlock() {
l.mu.Unlock()
}
// Deprecated: use github.com/moby/locker.Locker
type Locker = locker.Locker
// New creates a new Locker
func New() *Locker {
return &Locker{
locks: make(map[string]*lockCtr),
}
}
// Lock locks a mutex with the given name. If it doesn't exist, one is created
func (l *Locker) Lock(name string) {
l.mu.Lock()
if l.locks == nil {
l.locks = make(map[string]*lockCtr)
}
nameLock, exists := l.locks[name]
if !exists {
nameLock = &lockCtr{}
l.locks[name] = nameLock
}
// increment the nameLock waiters while inside the main mutex
// this makes sure that the lock isn't deleted if `Lock` and `Unlock` are called concurrently
nameLock.inc()
l.mu.Unlock()
// Lock the nameLock outside the main mutex so we don't block other operations
// once locked then we can decrement the number of waiters for this lock
nameLock.Lock()
nameLock.dec()
}
// Unlock unlocks the mutex with the given name
// If the given lock is not being waited on by any other callers, it is deleted
func (l *Locker) Unlock(name string) error {
l.mu.Lock()
nameLock, exists := l.locks[name]
if !exists {
l.mu.Unlock()
return ErrNoSuchLock
}
if nameLock.count() == 0 {
delete(l.locks, name)
}
nameLock.Unlock()
l.mu.Unlock()
return nil
}
// Deprecated: use github.com/moby/locker.New
var New = locker.New

161
pkg/locker/locker_test.go
View File

@ -1,161 +0,0 @@
package locker // import "github.com/docker/docker/pkg/locker"
import (
"math/rand"
"strconv"
"sync"
"testing"
"time"
)
func TestLockCounter(t *testing.T) {
l := &lockCtr{}
l.inc()
if l.waiters != 1 {
t.Fatal("counter inc failed")
}
l.dec()
if l.waiters != 0 {
t.Fatal("counter dec failed")
}
}
func TestLockerLock(t *testing.T) {
l := New()
l.Lock("test")
ctr := l.locks["test"]
if ctr.count() != 0 {
t.Fatalf("expected waiters to be 0, got :%d", ctr.waiters)
}
chDone := make(chan struct{})
go func() {
l.Lock("test")
close(chDone)
}()
chWaiting := make(chan struct{})
go func() {
for range time.Tick(1 * time.Millisecond) {
if ctr.count() == 1 {
close(chWaiting)
break
}
}
}()
select {
case <-chWaiting:
case <-time.After(3 * time.Second):
t.Fatal("timed out waiting for lock waiters to be incremented")
}
select {
case <-chDone:
t.Fatal("lock should not have returned while it was still held")
default:
}
if err := l.Unlock("test"); err != nil {
t.Fatal(err)
}
select {
case <-chDone:
case <-time.After(3 * time.Second):
t.Fatalf("lock should have completed")
}
if ctr.count() != 0 {
t.Fatalf("expected waiters to be 0, got: %d", ctr.count())
}
}
func TestLockerUnlock(t *testing.T) {
l := New()
l.Lock("test")
l.Unlock("test")
chDone := make(chan struct{})
go func() {
l.Lock("test")
close(chDone)
}()
select {
case <-chDone:
case <-time.After(3 * time.Second):
t.Fatalf("lock should not be blocked")
}
}
func TestLockerConcurrency(t *testing.T) {
l := New()
var wg sync.WaitGroup
for i := 0; i <= 10000; i++ {
wg.Add(1)
go func() {
l.Lock("test")
// if there is a concurrency issue, will very likely panic here
l.Unlock("test")
wg.Done()
}()
}
chDone := make(chan struct{})
go func() {
wg.Wait()
close(chDone)
}()
select {
case <-chDone:
case <-time.After(10 * time.Second):
t.Fatal("timeout waiting for locks to complete")
}
// Since everything has unlocked this should not exist anymore
if ctr, exists := l.locks["test"]; exists {
t.Fatalf("lock should not exist: %v", ctr)
}
}
func BenchmarkLocker(b *testing.B) {
l := New()
for i := 0; i < b.N; i++ {
l.Lock("test")
l.Unlock("test")
}
}
func BenchmarkLockerParallel(b *testing.B) {
l := New()
b.SetParallelism(128)
b.RunParallel(func(pb *testing.PB) {
for pb.Next() {
l.Lock("test")
l.Unlock("test")
}
})
}
func BenchmarkLockerMoreKeys(b *testing.B) {
l := New()
var keys []string
for i := 0; i < 64; i++ {
keys = append(keys, strconv.Itoa(i))
}
b.SetParallelism(128)
b.RunParallel(func(pb *testing.PB) {
for pb.Next() {
k := keys[rand.Intn(len(keys))]
l.Lock(k)
l.Unlock(k)
}
})
}

1
vendor.conf
View File

@ -6,6 +6,7 @@ github.com/golang/gddo 72a348e765d293ed6d1ded7b6995
github.com/google/uuid 0cd6bf5da1e1c83f8b45653022c74f71af0538a4 # v1.1.1
github.com/gorilla/mux 98cb6bf42e086f6af920b965c38cacc07402d51b # v1.8.0
github.com/Microsoft/opengcs a10967154e143a36014584a6f664344e3bb0aa64
github.com/moby/locker 281af2d563954745bea9d1487c965f24d30742fe # v1.0.1
github.com/moby/term 73f35e472e8f0a3f91347164138ce6bd73b756a9
github.com/creack/pty 3a6a957789163cacdfe0e291617a1c8e80612c11 # v1.1.9

190
vendor/github.com/moby/locker/LICENSE generated vendored Normal file
View File

@ -0,0 +1,190 @@
Apache License
Version 2.0, January 2004
https://www.apache.org/licenses/
TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
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direction or management of such entity, whether by contract or
otherwise, or (ii) ownership of fifty percent (50%) or more of the
outstanding shares, or (iii) beneficial ownership of such entity.
"You" (or "Your") shall mean an individual or Legal Entity
exercising permissions granted by this License.
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including but not limited to software source code, documentation
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"Work" shall mean the work of authorship, whether in Source or
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5. Submission of Contributions. Unless You explicitly state otherwise,
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2
pkg/locker/README.md → vendor/github.com/moby/locker/README.md generated vendored
View File

@ -23,7 +23,7 @@ import (
"sync"
"time"
"github.com/docker/docker/pkg/locker"
"github.com/moby/locker"
)
type important struct {

3
vendor/github.com/moby/locker/go.mod generated vendored Normal file
View File

@ -0,0 +1,3 @@
module github.com/moby/locker
go 1.13

112
vendor/github.com/moby/locker/locker.go generated vendored Normal file
View File

@ -0,0 +1,112 @@
/*
Package locker provides a mechanism for creating finer-grained locking to help
free up more global locks to handle other tasks.
The implementation looks close to a sync.Mutex, however the user must provide a
reference to use to refer to the underlying lock when locking and unlocking,
and unlock may generate an error.
If a lock with a given name does not exist when `Lock` is called, one is
created.
Lock references are automatically cleaned up on `Unlock` if nothing else is
waiting for the lock.
*/
package locker
import (
"errors"
"sync"
"sync/atomic"
)
// ErrNoSuchLock is returned when the requested lock does not exist
var ErrNoSuchLock = errors.New("no such lock")
// Locker provides a locking mechanism based on the passed in reference name
type Locker struct {
mu sync.Mutex
locks map[string]*lockCtr
}
// lockCtr is used by Locker to represent a lock with a given name.
type lockCtr struct {
mu sync.Mutex
// waiters is the number of waiters waiting to acquire the lock
// this is int32 instead of uint32 so we can add `-1` in `dec()`
waiters int32
}
// inc increments the number of waiters waiting for the lock
func (l *lockCtr) inc() {
atomic.AddInt32(&l.waiters, 1)
}
// dec decrements the number of waiters waiting on the lock
func (l *lockCtr) dec() {
atomic.AddInt32(&l.waiters, -1)
}
// count gets the current number of waiters
func (l *lockCtr) count() int32 {
return atomic.LoadInt32(&l.waiters)
}
// Lock locks the mutex
func (l *lockCtr) Lock() {
l.mu.Lock()
}
// Unlock unlocks the mutex
func (l *lockCtr) Unlock() {
l.mu.Unlock()
}
// New creates a new Locker
func New() *Locker {
return &Locker{
locks: make(map[string]*lockCtr),
}
}
// Lock locks a mutex with the given name. If it doesn't exist, one is created
func (l *Locker) Lock(name string) {
l.mu.Lock()
if l.locks == nil {
l.locks = make(map[string]*lockCtr)
}
nameLock, exists := l.locks[name]
if !exists {
nameLock = &lockCtr{}
l.locks[name] = nameLock
}
// increment the nameLock waiters while inside the main mutex
// this makes sure that the lock isn't deleted if `Lock` and `Unlock` are called concurrently
nameLock.inc()
l.mu.Unlock()
// Lock the nameLock outside the main mutex so we don't block other operations
// once locked then we can decrement the number of waiters for this lock
nameLock.Lock()
nameLock.dec()
}
// Unlock unlocks the mutex with the given name
// If the given lock is not being waited on by any other callers, it is deleted
func (l *Locker) Unlock(name string) error {
l.mu.Lock()
nameLock, exists := l.locks[name]
if !exists {
l.mu.Unlock()
return ErrNoSuchLock
}
if nameLock.count() == 0 {
delete(l.locks, name)
}
nameLock.Unlock()
l.mu.Unlock()
return nil
}

2
volume/drivers/extpoint.go
View File

@ -8,10 +8,10 @@ import (
"sync"
"github.com/docker/docker/errdefs"
"github.com/docker/docker/pkg/locker"
getter "github.com/docker/docker/pkg/plugingetter"
"github.com/docker/docker/pkg/plugins"
"github.com/docker/docker/volume"
"github.com/moby/locker"
"github.com/pkg/errors"
"github.com/sirupsen/logrus"
)

5
volume/service/store.go
View File

@ -10,14 +10,13 @@ import (
"sync"
"time"
"github.com/pkg/errors"
"github.com/docker/docker/errdefs"
"github.com/docker/docker/pkg/locker"
"github.com/docker/docker/volume"
"github.com/docker/docker/volume/drivers"
volumemounts "github.com/docker/docker/volume/mounts"
"github.com/docker/docker/volume/service/opts"
"github.com/moby/locker"
"github.com/pkg/errors"
"github.com/sirupsen/logrus"
bolt "go.etcd.io/bbolt"
)