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379 lines
9.8 KiB
379 lines
9.8 KiB
// 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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// 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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"math/rand"
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"os"
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"sync"
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"testing"
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"github.com/cznic/mathutil"
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. "github.com/pingcap/check"
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"github.com/pingcap/parser/terror"
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"github.com/pingcap/tidb/errno"
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"github.com/pingcap/tidb/util/logutil"
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"github.com/pingcap/tidb/util/testleak"
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)
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func TestT(t *testing.T) {
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CustomVerboseFlag = true
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logLevel := os.Getenv("log_level")
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logutil.InitLogger(logutil.NewLogConfig(logLevel, logutil.DefaultLogFormat, "", logutil.EmptyFileLogConfig, false))
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TestingT(t)
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}
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var _ = Suite(&testSuite{})
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type testSuite struct{}
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func (s *testSuite) SetUpSuite(c *C) {}
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func (s *testSuite) TearDownSuite(c *C) {}
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func (s *testSuite) SetUpTest(c *C) { testleak.BeforeTest() }
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func (s *testSuite) TearDownTest(c *C) { testleak.AfterTest(c)() }
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func (s *testSuite) TestSetLabel(c *C) {
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tracker := NewTracker(1, -1)
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c.Assert(tracker.label, Equals, 1)
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c.Assert(tracker.BytesConsumed(), Equals, int64(0))
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c.Assert(tracker.bytesLimit, Equals, int64(-1))
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c.Assert(tracker.parent, IsNil)
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c.Assert(len(tracker.mu.children), Equals, 0)
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tracker.SetLabel(2)
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c.Assert(tracker.label, Equals, 2)
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c.Assert(tracker.BytesConsumed(), Equals, int64(0))
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c.Assert(tracker.bytesLimit, Equals, int64(-1))
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c.Assert(tracker.parent, IsNil)
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c.Assert(len(tracker.mu.children), Equals, 0)
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}
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func (s *testSuite) TestConsume(c *C) {
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tracker := NewTracker(1, -1)
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c.Assert(tracker.BytesConsumed(), Equals, int64(0))
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tracker.Consume(100)
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c.Assert(tracker.BytesConsumed(), Equals, int64(100))
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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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c.Assert(tracker.BytesConsumed(), Equals, int64(100))
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}
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func (s *testSuite) TestOOMAction(c *C) {
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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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c.Assert(action.called, IsFalse)
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tracker.Consume(10000)
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c.Assert(action.called, IsTrue)
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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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c.Assert(action1.called, IsFalse)
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c.Assert(action2.called, IsFalse)
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tracker.Consume(10000)
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c.Assert(action1.called, IsTrue)
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c.Assert(action2.called, IsFalse)
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tracker.Consume(10000)
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c.Assert(action1.called, IsTrue)
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c.Assert(action2.called, IsTrue)
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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) SetLogHook(hook func(uint64)) {
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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 (s *testSuite) TestAttachTo(c *C) {
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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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c.Assert(child.BytesConsumed(), Equals, int64(100))
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c.Assert(oldParent.BytesConsumed(), Equals, int64(100))
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c.Assert(child.parent, DeepEquals, oldParent)
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c.Assert(len(oldParent.mu.children), Equals, 1)
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c.Assert(oldParent.mu.children[child.label][0], DeepEquals, child)
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child.AttachTo(newParent)
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c.Assert(child.BytesConsumed(), Equals, int64(100))
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c.Assert(oldParent.BytesConsumed(), Equals, int64(0))
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c.Assert(newParent.BytesConsumed(), Equals, int64(100))
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c.Assert(child.parent, DeepEquals, newParent)
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c.Assert(len(newParent.mu.children), Equals, 1)
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c.Assert(newParent.mu.children[child.label][0], DeepEquals, child)
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c.Assert(len(oldParent.mu.children), Equals, 0)
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}
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func (s *testSuite) TestDetach(c *C) {
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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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c.Assert(child.BytesConsumed(), Equals, int64(100))
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c.Assert(parent.BytesConsumed(), Equals, int64(100))
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c.Assert(len(parent.mu.children), Equals, 1)
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c.Assert(parent.mu.children[child.label][0], DeepEquals, child)
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child.Detach()
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c.Assert(child.BytesConsumed(), Equals, int64(100))
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c.Assert(parent.BytesConsumed(), Equals, int64(0))
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c.Assert(len(parent.mu.children), Equals, 0)
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c.Assert(child.parent, IsNil)
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}
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func (s *testSuite) TestReplaceChild(c *C) {
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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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c.Assert(parent.BytesConsumed(), Equals, int64(100))
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parent.ReplaceChild(oldChild, newChild)
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c.Assert(parent.BytesConsumed(), Equals, int64(500))
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c.Assert(len(parent.mu.children), Equals, 1)
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c.Assert(parent.mu.children[newChild.label][0], DeepEquals, newChild)
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c.Assert(newChild.parent, DeepEquals, parent)
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c.Assert(oldChild.parent, IsNil)
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parent.ReplaceChild(oldChild, nil)
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c.Assert(parent.BytesConsumed(), Equals, int64(500))
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c.Assert(len(parent.mu.children), Equals, 1)
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c.Assert(parent.mu.children[newChild.label][0], DeepEquals, newChild)
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c.Assert(newChild.parent, DeepEquals, parent)
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c.Assert(oldChild.parent, IsNil)
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parent.ReplaceChild(newChild, nil)
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c.Assert(parent.BytesConsumed(), Equals, int64(0))
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c.Assert(len(parent.mu.children), Equals, 0)
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c.Assert(newChild.parent, IsNil)
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c.Assert(oldChild.parent, IsNil)
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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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c.Assert(node1.BytesConsumed(), Equals, int64(100))
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node2.ReplaceChild(node3, nil)
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c.Assert(node2.BytesConsumed(), Equals, int64(0))
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c.Assert(node1.BytesConsumed(), Equals, int64(0))
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}
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func (s *testSuite) TestToString(c *C) {
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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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c.Assert(parent.String(), Equals, `
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"1"{
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"consumed": 4.00293168798089 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 (s *testSuite) TestMaxConsumed(c *C) {
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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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t := 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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t.Consume(b)
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maxConsumed = mathutil.MaxInt64(maxConsumed, consumed)
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c.Assert(r.BytesConsumed(), Equals, consumed)
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c.Assert(r.MaxConsumed(), Equals, maxConsumed)
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}
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}
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func (s *testSuite) TestGlobalTracker(c *C) {
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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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c.Assert(r.BytesConsumed(), Equals, int64(300))
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c.Assert(c1.parent, DeepEquals, r)
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c.Assert(c2.parent, DeepEquals, r)
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c.Assert(len(r.mu.children), Equals, 0)
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c1.DetachFromGlobalTracker()
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c2.DetachFromGlobalTracker()
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c.Assert(r.BytesConsumed(), Equals, int64(0))
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c.Assert(c1.parent, IsNil)
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c.Assert(c2.parent, IsNil)
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c.Assert(len(r.mu.children), Equals, 0)
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defer func() {
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v := recover()
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c.Assert(v, Equals, "Attach to a non-GlobalTracker")
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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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c.Assert(commonTracker.BytesConsumed(), Equals, int64(100))
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c.Assert(len(commonTracker.mu.children), Equals, 1)
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c.Assert(c1.parent, DeepEquals, commonTracker)
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c1.AttachToGlobalTracker(r)
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c.Assert(commonTracker.BytesConsumed(), Equals, int64(0))
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c.Assert(len(commonTracker.mu.children), Equals, 0)
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c.Assert(r.BytesConsumed(), Equals, int64(100))
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c.Assert(c1.parent, DeepEquals, r)
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c.Assert(len(r.mu.children), Equals, 0)
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defer func() {
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v := recover()
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c.Assert(v, Equals, "Detach from a non-GlobalTracker")
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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 BenchmarkConsume(b *testing.B) {
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tracker := NewTracker(1, -1)
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b.RunParallel(func(pb *testing.PB) {
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childTracker := NewTracker(2, -1)
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childTracker.AttachTo(tracker)
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for pb.Next() {
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childTracker.Consume(256 << 20)
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}
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})
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}
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func (s *testSuite) TestErrorCode(c *C) {
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c.Assert(int(terror.ToSQLError(errMemExceedThreshold).Code), Equals, errno.ErrMemExceedThreshold)
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}
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func (s *testSuite) TestOOMActionPriority(c *C) {
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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, 1)
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tracker.actionMu.actionOnExceed = nil
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n := 100
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actions := make([]*mockAction, n)
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for i := 0; i < n; i++ {
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actions[i] = &mockAction{priority: int64(i)}
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}
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randomShuffle := make([]int, n)
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for i := 0; i < n; i++ {
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randomShuffle[i] = i
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pos := rand.Int() % (i + 1)
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randomShuffle[i], randomShuffle[pos] = randomShuffle[pos], randomShuffle[i]
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}
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for i := 0; i < n; i++ {
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tracker.FallbackOldAndSetNewAction(actions[randomShuffle[i]])
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}
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for i := n - 1; i >= 0; i-- {
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tracker.Consume(100)
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for j := n - 1; j >= 0; j-- {
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if j >= i {
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c.Assert(actions[j].called, IsTrue)
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} else {
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c.Assert(actions[j].called, IsFalse)
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}
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}
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}
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}
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