580 lines
16 KiB
Go
580 lines
16 KiB
Go
// Copyright 2018 PingCAP, Inc.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package memory
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import (
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"errors"
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"math/rand"
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"runtime"
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"runtime/debug"
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"strconv"
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"strings"
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"sync"
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"testing"
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"time"
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"github.com/pingcap/tidb/errno"
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"github.com/pingcap/tidb/parser/terror"
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"github.com/pingcap/tidb/util/mathutil"
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"github.com/stretchr/testify/require"
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)
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func TestSetLabel(t *testing.T) {
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tracker := NewTracker(1, -1)
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require.Equal(t, 1, tracker.label)
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require.Equal(t, int64(0), tracker.BytesConsumed())
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require.Equal(t, int64(-1), tracker.GetBytesLimit())
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require.Nil(t, tracker.getParent())
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require.Equal(t, 0, len(tracker.mu.children))
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tracker.SetLabel(2)
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require.Equal(t, 2, tracker.label)
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require.Equal(t, int64(0), tracker.BytesConsumed())
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require.Equal(t, int64(-1), tracker.GetBytesLimit())
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require.Nil(t, tracker.getParent())
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require.Equal(t, 0, len(tracker.mu.children))
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}
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func TestSetLabel2(t *testing.T) {
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tracker := NewTracker(1, -1)
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tracker2 := NewTracker(2, -1)
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tracker2.AttachTo(tracker)
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tracker2.Consume(10)
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require.Equal(t, tracker.BytesConsumed(), int64(10))
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tracker2.SetLabel(10)
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require.Equal(t, tracker.BytesConsumed(), int64(10))
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tracker2.Detach()
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require.Equal(t, tracker.BytesConsumed(), int64(0))
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}
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func TestConsume(t *testing.T) {
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tracker := NewTracker(1, -1)
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require.Equal(t, int64(0), tracker.BytesConsumed())
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tracker.Consume(100)
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require.Equal(t, int64(100), tracker.BytesConsumed())
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waitGroup := sync.WaitGroup{}
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waitGroup.Add(10)
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for i := 0; i < 10; i++ {
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go func() {
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defer waitGroup.Done()
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tracker.Consume(10)
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}()
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}
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waitGroup.Add(10)
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for i := 0; i < 10; i++ {
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go func() {
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defer waitGroup.Done()
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tracker.Consume(-10)
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}()
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}
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waitGroup.Wait()
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require.Equal(t, int64(100), tracker.BytesConsumed())
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}
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func TestRelease(t *testing.T) {
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debug.SetGCPercent(-1)
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defer debug.SetGCPercent(100)
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parentTracker := NewGlobalTracker(LabelForGlobalAnalyzeMemory, -1)
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tracker := NewTracker(1, -1)
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tracker.AttachToGlobalTracker(parentTracker)
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require.Equal(t, int64(0), tracker.BytesConsumed())
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EnableGCAwareMemoryTrack.Store(false)
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tracker.Consume(100)
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require.Equal(t, int64(100), tracker.BytesConsumed())
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require.Equal(t, int64(100), parentTracker.BytesConsumed())
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tracker.Release(100)
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require.Equal(t, int64(0), tracker.BytesConsumed())
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require.Equal(t, int64(0), parentTracker.BytesConsumed())
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require.Equal(t, int64(0), tracker.BytesReleased())
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require.Equal(t, int64(0), parentTracker.BytesReleased())
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EnableGCAwareMemoryTrack.Store(true)
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tracker.Consume(100)
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require.Equal(t, int64(100), tracker.BytesConsumed())
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require.Equal(t, int64(100), parentTracker.BytesConsumed())
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tracker.Release(100)
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require.Equal(t, int64(0), tracker.BytesConsumed())
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require.Equal(t, int64(0), parentTracker.BytesConsumed())
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require.Equal(t, int64(0), tracker.BytesReleased())
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require.Equal(t, int64(100), parentTracker.BytesReleased())
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// finalizer func is called async, need to wait for it to be called
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for {
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runtime.GC()
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if parentTracker.BytesReleased() == 0 {
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break
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}
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time.Sleep(time.Millisecond * 5)
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}
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waitGroup := sync.WaitGroup{}
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waitGroup.Add(10)
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for i := 0; i < 10; i++ {
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go func() {
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defer waitGroup.Done()
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tracker.Consume(10)
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}()
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}
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waitGroup.Add(10)
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for i := 0; i < 10; i++ {
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go func() {
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defer waitGroup.Done()
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tracker.Release(10)
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}()
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}
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waitGroup.Wait()
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// finalizer func is called async, need to wait for it to be called
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for {
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runtime.GC()
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if parentTracker.BytesReleased() == 0 {
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break
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}
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time.Sleep(time.Millisecond * 5)
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}
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require.Equal(t, int64(0), tracker.BytesConsumed())
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require.Equal(t, int64(0), parentTracker.BytesConsumed())
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require.Equal(t, int64(0), tracker.BytesReleased())
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}
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func TestBufferedConsumeAndRelease(t *testing.T) {
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debug.SetGCPercent(-1)
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defer debug.SetGCPercent(100)
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parentTracker := NewGlobalTracker(LabelForGlobalAnalyzeMemory, -1)
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tracker := NewTracker(1, -1)
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tracker.AttachToGlobalTracker(parentTracker)
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require.Equal(t, int64(0), tracker.BytesConsumed())
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EnableGCAwareMemoryTrack.Store(true)
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bufferedMemSize := int64(0)
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tracker.BufferedConsume(&bufferedMemSize, int64(TrackMemWhenExceeds)/2)
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require.Equal(t, int64(0), tracker.BytesConsumed())
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tracker.BufferedConsume(&bufferedMemSize, int64(TrackMemWhenExceeds)/2)
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require.Equal(t, int64(TrackMemWhenExceeds), tracker.BytesConsumed())
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bufferedReleaseSize := int64(0)
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tracker.BufferedRelease(&bufferedReleaseSize, int64(TrackMemWhenExceeds)/2)
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require.Equal(t, int64(TrackMemWhenExceeds), parentTracker.BytesConsumed())
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require.Equal(t, int64(0), parentTracker.BytesReleased())
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tracker.BufferedRelease(&bufferedReleaseSize, int64(TrackMemWhenExceeds)/2)
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require.Equal(t, int64(0), parentTracker.BytesConsumed())
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require.Equal(t, int64(TrackMemWhenExceeds), parentTracker.BytesReleased())
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// finalizer func is called async, need to wait for it to be called
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for {
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runtime.GC()
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if parentTracker.BytesReleased() == 0 {
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break
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}
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time.Sleep(time.Millisecond * 5)
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}
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}
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func TestOOMAction(t *testing.T) {
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tracker := NewTracker(1, 100)
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// make sure no panic here.
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tracker.Consume(10000)
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tracker = NewTracker(1, 100)
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action := &mockAction{}
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tracker.SetActionOnExceed(action)
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require.False(t, action.called)
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tracker.Consume(10000)
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require.True(t, action.called)
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// test fallback
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action1 := &mockAction{}
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action2 := &mockAction{}
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tracker.SetActionOnExceed(action1)
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tracker.FallbackOldAndSetNewAction(action2)
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require.False(t, action1.called)
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require.False(t, action2.called)
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tracker.Consume(10000)
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require.True(t, action2.called)
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require.False(t, action1.called)
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tracker.Consume(10000)
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require.True(t, action1.called)
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require.True(t, action2.called)
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// test softLimit
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tracker = NewTracker(1, 100)
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action1 = &mockAction{}
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action2 = &mockAction{}
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action3 := &mockAction{}
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tracker.SetActionOnExceed(action1)
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tracker.FallbackOldAndSetNewActionForSoftLimit(action2)
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tracker.FallbackOldAndSetNewActionForSoftLimit(action3)
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require.False(t, action3.called)
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require.False(t, action2.called)
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require.False(t, action1.called)
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tracker.Consume(80)
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require.True(t, action3.called)
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require.False(t, action2.called)
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require.False(t, action1.called)
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tracker.Consume(20)
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require.True(t, action3.called)
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require.True(t, action2.called) // SoftLimit fallback
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require.True(t, action1.called) // HardLimit
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// test fallback
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action1 = &mockAction{}
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action2 = &mockAction{}
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action3 = &mockAction{}
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action4 := &mockAction{}
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action5 := &mockAction{}
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tracker.SetActionOnExceed(action1)
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tracker.FallbackOldAndSetNewAction(action2)
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tracker.FallbackOldAndSetNewAction(action3)
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tracker.FallbackOldAndSetNewAction(action4)
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tracker.FallbackOldAndSetNewAction(action5)
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require.Equal(t, action5, tracker.actionMuForHardLimit.actionOnExceed)
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require.Equal(t, action4, tracker.actionMuForHardLimit.actionOnExceed.GetFallback())
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action4.SetFinished()
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require.Equal(t, action3, tracker.actionMuForHardLimit.actionOnExceed.GetFallback())
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action3.SetFinished()
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action2.SetFinished()
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require.Equal(t, action1, tracker.actionMuForHardLimit.actionOnExceed.GetFallback())
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}
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type mockAction struct {
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BaseOOMAction
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called bool
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priority int64
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}
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func (a *mockAction) Action(t *Tracker) {
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if a.called && a.fallbackAction != nil {
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a.fallbackAction.Action(t)
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return
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}
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a.called = true
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}
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func (a *mockAction) GetPriority() int64 {
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return a.priority
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}
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func TestAttachTo(t *testing.T) {
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oldParent := NewTracker(1, -1)
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newParent := NewTracker(2, -1)
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child := NewTracker(3, -1)
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child.Consume(100)
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child.AttachTo(oldParent)
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require.Equal(t, int64(100), child.BytesConsumed())
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require.Equal(t, int64(100), oldParent.BytesConsumed())
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require.Equal(t, oldParent, child.getParent())
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require.Equal(t, 1, len(oldParent.mu.children))
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require.Equal(t, child, oldParent.mu.children[child.label][0])
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child.AttachTo(newParent)
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require.Equal(t, int64(100), child.BytesConsumed())
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require.Equal(t, int64(0), oldParent.BytesConsumed())
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require.Equal(t, int64(100), newParent.BytesConsumed())
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require.Equal(t, newParent, child.getParent())
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require.Equal(t, 1, len(newParent.mu.children))
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require.Equal(t, child, newParent.mu.children[child.label][0])
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require.Equal(t, 0, len(oldParent.mu.children))
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}
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func TestDetach(t *testing.T) {
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parent := NewTracker(1, -1)
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child := NewTracker(2, -1)
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child.Consume(100)
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child.AttachTo(parent)
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require.Equal(t, int64(100), child.BytesConsumed())
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require.Equal(t, int64(100), parent.BytesConsumed())
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require.Equal(t, 1, len(parent.mu.children))
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require.Equal(t, child, parent.mu.children[child.label][0])
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child.Detach()
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require.Equal(t, int64(100), child.BytesConsumed())
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require.Equal(t, int64(0), parent.BytesConsumed())
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require.Equal(t, 0, len(parent.mu.children))
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require.Nil(t, child.getParent())
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}
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func TestReplaceChild(t *testing.T) {
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oldChild := NewTracker(1, -1)
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oldChild.Consume(100)
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newChild := NewTracker(2, -1)
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newChild.Consume(500)
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parent := NewTracker(3, -1)
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oldChild.AttachTo(parent)
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require.Equal(t, int64(100), parent.BytesConsumed())
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parent.ReplaceChild(oldChild, newChild)
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require.Equal(t, int64(500), parent.BytesConsumed())
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require.Equal(t, 1, len(parent.mu.children))
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require.Equal(t, newChild, parent.mu.children[newChild.label][0])
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require.Equal(t, parent, newChild.getParent())
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require.Nil(t, oldChild.getParent())
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parent.ReplaceChild(oldChild, nil)
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require.Equal(t, int64(500), parent.BytesConsumed())
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require.Equal(t, 1, len(parent.mu.children))
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require.Equal(t, newChild, parent.mu.children[newChild.label][0])
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require.Equal(t, parent, newChild.getParent())
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require.Nil(t, oldChild.getParent())
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parent.ReplaceChild(newChild, nil)
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require.Equal(t, int64(0), parent.BytesConsumed())
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require.Equal(t, 0, len(parent.mu.children))
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require.Nil(t, newChild.getParent())
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require.Nil(t, oldChild.getParent())
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node1 := NewTracker(1, -1)
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node2 := NewTracker(2, -1)
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node3 := NewTracker(3, -1)
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node2.AttachTo(node1)
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node3.AttachTo(node2)
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node3.Consume(100)
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require.Equal(t, int64(100), node1.BytesConsumed())
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node2.ReplaceChild(node3, nil)
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require.Equal(t, int64(0), node2.BytesConsumed())
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require.Equal(t, int64(0), node1.BytesConsumed())
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}
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func TestToString(t *testing.T) {
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parent := NewTracker(1, -1)
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child1 := NewTracker(2, 1000)
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child2 := NewTracker(3, -1)
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child3 := NewTracker(4, -1)
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child4 := NewTracker(5, -1)
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child1.AttachTo(parent)
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child2.AttachTo(parent)
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child3.AttachTo(parent)
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child4.AttachTo(parent)
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child1.Consume(100)
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child2.Consume(2 * 1024)
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child3.Consume(3 * 1024 * 1024)
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child4.Consume(4 * 1024 * 1024 * 1024)
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require.Equal(t, parent.String(), `
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"1"{
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"consumed": 4.00 GB
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"2"{
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"quota": 1000 Bytes
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"consumed": 100 Bytes
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}
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"3"{
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"consumed": 2 KB
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}
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"4"{
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"consumed": 3 MB
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}
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"5"{
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"consumed": 4 GB
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}
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}
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`)
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}
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func TestMaxConsumed(t *testing.T) {
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r := NewTracker(1, -1)
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c1 := NewTracker(2, -1)
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c2 := NewTracker(3, -1)
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cc1 := NewTracker(4, -1)
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c1.AttachTo(r)
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c2.AttachTo(r)
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cc1.AttachTo(c1)
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ts := []*Tracker{r, c1, c2, cc1}
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var consumed, maxConsumed int64
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for i := 0; i < 10; i++ {
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tracker := ts[rand.Intn(len(ts))]
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b := rand.Int63n(1000) - 500
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if consumed+b < 0 {
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b = -consumed
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}
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consumed += b
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tracker.Consume(b)
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maxConsumed = mathutil.Max(maxConsumed, consumed)
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require.Equal(t, consumed, r.BytesConsumed())
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require.Equal(t, maxConsumed, r.MaxConsumed())
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}
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}
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func TestGlobalTracker(t *testing.T) {
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r := NewGlobalTracker(1, -1)
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c1 := NewTracker(2, -1)
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c2 := NewTracker(3, -1)
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c1.Consume(100)
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c2.Consume(200)
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c1.AttachToGlobalTracker(r)
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c2.AttachToGlobalTracker(r)
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require.Equal(t, int64(300), r.BytesConsumed())
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require.Equal(t, r, c1.getParent())
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require.Equal(t, r, c2.getParent())
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require.Equal(t, 0, len(r.mu.children))
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c1.DetachFromGlobalTracker()
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c2.DetachFromGlobalTracker()
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require.Equal(t, int64(0), r.BytesConsumed())
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require.Nil(t, c1.getParent())
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require.Nil(t, c2.getParent())
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require.Equal(t, 0, len(r.mu.children))
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defer func() {
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v := recover()
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require.Equal(t, "Attach to a non-GlobalTracker", v)
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}()
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commonTracker := NewTracker(4, -1)
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c1.AttachToGlobalTracker(commonTracker)
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c1.AttachTo(commonTracker)
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require.Equal(t, int64(100), commonTracker.BytesConsumed())
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require.Equal(t, 1, len(commonTracker.mu.children))
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require.Equal(t, commonTracker, c1.getParent())
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c1.AttachToGlobalTracker(r)
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require.Equal(t, int64(0), commonTracker.BytesConsumed())
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require.Equal(t, 0, len(commonTracker.mu.children))
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require.Equal(t, int64(100), r.BytesConsumed())
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require.Equal(t, r, c1.getParent())
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require.Equal(t, 0, len(r.mu.children))
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defer func() {
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v := recover()
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require.Equal(t, "Detach from a non-GlobalTracker", v)
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}()
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c2.AttachTo(commonTracker)
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c2.DetachFromGlobalTracker()
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}
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func parseByteUnit(str string) (int64, error) {
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u := strings.TrimSpace(str)
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switch u {
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case "GB":
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return byteSizeGB, nil
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case "MB":
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return byteSizeMB, nil
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case "KB":
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return byteSizeKB, nil
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case "Bytes":
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return byteSizeBB, nil
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}
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return 0, errors.New("invalid byte unit: " + str)
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}
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func parseByte(str string) (int64, error) {
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vBuf := make([]byte, 0, len(str))
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uBuf := make([]byte, 0, 2)
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b := int64(0)
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for _, v := range str {
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if (v >= '0' && v <= '9') || v == '.' {
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vBuf = append(vBuf, byte(v))
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} else if v != ' ' {
|
|
uBuf = append(uBuf, byte(v))
|
|
}
|
|
}
|
|
unit, err := parseByteUnit(string(uBuf))
|
|
if err != nil {
|
|
return 0, err
|
|
}
|
|
v, err := strconv.ParseFloat(string(vBuf), 64)
|
|
if err != nil {
|
|
return 0, err
|
|
}
|
|
b = int64(v * float64(unit))
|
|
return b, nil
|
|
}
|
|
|
|
func TestFormatBytesWithPrune(t *testing.T) {
|
|
cases := []struct {
|
|
b string
|
|
s string
|
|
}{
|
|
{"0 Bytes", "0 Bytes"},
|
|
{"1 Bytes", "1 Bytes"},
|
|
{"9 Bytes", "9 Bytes"},
|
|
{"10 Bytes", "10 Bytes"},
|
|
{"999 Bytes", "999 Bytes"},
|
|
{"1 KB", "1024 Bytes"},
|
|
{"1.123 KB", "1.12 KB"},
|
|
{"1.023 KB", "1.02 KB"},
|
|
{"1.003 KB", "1.00 KB"},
|
|
{"10.456 KB", "10.5 KB"},
|
|
{"10.956 KB", "11.0 KB"},
|
|
{"999.056 KB", "999.1 KB"},
|
|
{"999.988 KB", "1000.0 KB"},
|
|
{"1.123 MB", "1.12 MB"},
|
|
{"1.023 MB", "1.02 MB"},
|
|
{"1.003 MB", "1.00 MB"},
|
|
{"10.456 MB", "10.5 MB"},
|
|
{"10.956 MB", "11.0 MB"},
|
|
{"999.056 MB", "999.1 MB"},
|
|
{"999.988 MB", "1000.0 MB"},
|
|
{"1.123 GB", "1.12 GB"},
|
|
{"1.023 GB", "1.02 GB"},
|
|
{"1.003 GB", "1.00 GB"},
|
|
{"10.456 GB", "10.5 GB"},
|
|
{"10.956 GB", "11.0 GB"},
|
|
{"9.412345 MB", "9.41 MB"},
|
|
{"10.412345 MB", "10.4 MB"},
|
|
{"5.999 GB", "6.00 GB"},
|
|
{"100.46 KB", "100.5 KB"},
|
|
{"18.399999618530273 MB", "18.4 MB"},
|
|
{"9.15999984741211 MB", "9.16 MB"},
|
|
}
|
|
for _, ca := range cases {
|
|
b, err := parseByte(ca.b)
|
|
require.NoError(t, err)
|
|
result := FormatBytes(b)
|
|
require.Equalf(t, ca.s, result, "input: %v\n", ca.b)
|
|
}
|
|
}
|
|
|
|
func TestErrorCode(t *testing.T) {
|
|
require.Equal(t, errno.ErrMemExceedThreshold, int(terror.ToSQLError(errMemExceedThreshold).Code))
|
|
}
|
|
|
|
func TestOOMActionPriority(t *testing.T) {
|
|
tracker := NewTracker(1, 100)
|
|
// make sure no panic here.
|
|
tracker.Consume(10000)
|
|
|
|
tracker = NewTracker(1, 1)
|
|
tracker.actionMuForHardLimit.actionOnExceed = nil
|
|
n := 100
|
|
actions := make([]*mockAction, n)
|
|
for i := 0; i < n; i++ {
|
|
actions[i] = &mockAction{priority: int64(i)}
|
|
}
|
|
|
|
randomShuffle := make([]int, n)
|
|
for i := 0; i < n; i++ {
|
|
randomShuffle[i] = i
|
|
pos := rand.Int() % (i + 1)
|
|
randomShuffle[i], randomShuffle[pos] = randomShuffle[pos], randomShuffle[i]
|
|
}
|
|
|
|
for i := 0; i < n; i++ {
|
|
tracker.FallbackOldAndSetNewAction(actions[randomShuffle[i]])
|
|
}
|
|
for i := n - 1; i >= 0; i-- {
|
|
tracker.Consume(100)
|
|
for j := n - 1; j >= 0; j-- {
|
|
if j >= i {
|
|
require.True(t, actions[j].called)
|
|
} else {
|
|
require.False(t, actions[j].called)
|
|
}
|
|
}
|
|
}
|
|
}
|