99 lines
2.7 KiB
Go
99 lines
2.7 KiB
Go
// Copyright 2022 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 resourcemanager
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import (
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"time"
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"github.com/google/uuid"
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"github.com/pingcap/tidb/pkg/resourcemanager/scheduler"
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"github.com/pingcap/tidb/pkg/resourcemanager/util"
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tidbutil "github.com/pingcap/tidb/pkg/util"
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"github.com/pingcap/tidb/pkg/util/cpu"
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)
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// InstanceResourceManager is a local instance resource manager
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var InstanceResourceManager = NewResourceManger()
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// RandomName is to get a random name for register pool. It is just for test.
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func RandomName() string {
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return uuid.New().String()
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}
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// ResourceManager is a resource manager
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type ResourceManager struct {
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poolMap *util.ShardPoolMap
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scheduler []scheduler.Scheduler
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cpuObserver *cpu.Observer
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exitCh chan struct{}
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wg tidbutil.WaitGroupWrapper
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}
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// NewResourceManger is to create a new resource manager
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func NewResourceManger() *ResourceManager {
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sc := make([]scheduler.Scheduler, 0, 1)
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sc = append(sc, scheduler.NewCPUScheduler())
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return &ResourceManager{
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cpuObserver: cpu.NewCPUObserver(),
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exitCh: make(chan struct{}),
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poolMap: util.NewShardPoolMap(),
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scheduler: sc,
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}
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}
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// Start is to start resource manager
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func (r *ResourceManager) Start() {
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r.wg.Run(r.cpuObserver.Start)
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r.wg.Run(func() {
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tick := time.NewTicker(100 * time.Millisecond)
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defer tick.Stop()
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for {
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select {
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case <-tick.C:
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r.schedule()
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case <-r.exitCh:
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return
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}
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}
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})
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}
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// Stop is to stop resource manager
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func (r *ResourceManager) Stop() {
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r.cpuObserver.Stop()
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close(r.exitCh)
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r.wg.Wait()
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}
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// Register is to register pool into resource manager
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func (r *ResourceManager) Register(pool util.GoroutinePool, name string, component util.Component) error {
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p := util.PoolContainer{Pool: pool, Component: component}
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return r.registerPool(name, &p)
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}
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func (r *ResourceManager) registerPool(name string, pool *util.PoolContainer) error {
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return r.poolMap.Add(name, pool)
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}
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// Unregister is to unregister pool into resource manager.
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func (r *ResourceManager) Unregister(name string) {
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r.poolMap.Del(name)
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}
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// Reset is to Reset resource manager. it is just for test.
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func (r *ResourceManager) Reset() {
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r.poolMap = util.NewShardPoolMap()
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}
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