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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,8 +1,19 @@ | ||
| load("@io_bazel_rules_go//go:def.bzl", "go_library") | ||
| load("@io_bazel_rules_go//go:def.bzl", "go_library", "go_test") | ||
|
|
||
| go_library( | ||
| name = "pooltask", | ||
| srcs = ["task.go"], | ||
| srcs = [ | ||
| "task.go", | ||
| "task_manager.go", | ||
| ], | ||
| importpath = "github.com/pingcap/tidb/resourcemanager/pooltask", | ||
| visibility = ["//visibility:public"], | ||
| deps = ["@org_uber_go_atomic//:atomic"], | ||
| ) | ||
|
|
||
| go_test( | ||
| name = "pooltask_test", | ||
| srcs = ["task_test.go"], | ||
| embed = [":pooltask"], | ||
| deps = ["@com_github_stretchr_testify//require"], | ||
| ) |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,146 @@ | ||
| // Copyright 2022 PingCAP, Inc. | ||
| // | ||
| // 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 pooltask | ||
|
|
||
| import ( | ||
| "container/list" | ||
| "sync" | ||
| "time" | ||
|
|
||
| "go.uber.org/atomic" | ||
| ) | ||
|
|
||
| const shard int = 8 | ||
|
|
||
| func getShardID(id uint64) uint64 { | ||
| return id % uint64(shard) | ||
| } | ||
|
|
||
| type tContainer[T any, U any, C any, CT any, TF Context[CT]] struct { | ||
| task *TaskBox[T, U, C, CT, TF] | ||
| } | ||
|
|
||
| type meta struct { | ||
| stats *list.List | ||
| createTS time.Time | ||
| origin int32 | ||
| running int32 | ||
| } | ||
|
|
||
| func newStats(concurrency int32) *meta { | ||
| s := &meta{ | ||
| createTS: time.Now(), | ||
| stats: list.New(), | ||
| origin: concurrency, | ||
| } | ||
| return s | ||
| } | ||
|
|
||
| func (m *meta) getOriginConcurrency() int32 { | ||
| return m.origin | ||
| } | ||
|
|
||
| // TaskStatusContainer is a container that can control or watch the pool. | ||
| type TaskStatusContainer[T any, U any, C any, CT any, TF Context[CT]] struct { | ||
| stats map[uint64]*meta | ||
| rw sync.RWMutex | ||
| } | ||
|
|
||
| // TaskManager is a manager that can control or watch the pool. | ||
| type TaskManager[T any, U any, C any, CT any, TF Context[CT]] struct { | ||
| task []TaskStatusContainer[T, U, C, CT, TF] | ||
| running atomic.Int32 | ||
| concurrency int32 | ||
| } | ||
|
|
||
| // NewTaskManager create a new pooltask manager. | ||
| func NewTaskManager[T any, U any, C any, CT any, TF Context[CT]](c int32) TaskManager[T, U, C, CT, TF] { | ||
| task := make([]TaskStatusContainer[T, U, C, CT, TF], shard) | ||
| for i := 0; i < shard; i++ { | ||
| task[i] = TaskStatusContainer[T, U, C, CT, TF]{ | ||
| stats: make(map[uint64]*meta), | ||
| } | ||
| } | ||
| return TaskManager[T, U, C, CT, TF]{ | ||
| task: task, | ||
| concurrency: c, | ||
| } | ||
| } | ||
|
|
||
| // RegisterTask register a task to the manager. | ||
| func (t *TaskManager[T, U, C, CT, TF]) RegisterTask(taskID uint64, concurrency int32) { | ||
| id := getShardID(taskID) | ||
| t.task[id].rw.Lock() | ||
| t.task[id].stats[taskID] = newStats(concurrency) | ||
| t.task[id].rw.Unlock() | ||
| } | ||
|
|
||
| // DeleteTask delete a task from the manager. | ||
| func (t *TaskManager[T, U, C, CT, TF]) DeleteTask(taskID uint64) { | ||
| shardID := getShardID(taskID) | ||
| t.task[shardID].rw.Lock() | ||
| delete(t.task[shardID].stats, taskID) | ||
| t.task[shardID].rw.Unlock() | ||
| } | ||
|
|
||
| // hasTask check if the task is in the manager. | ||
| func (t *TaskManager[T, U, C, CT, TF]) hasTask(taskID uint64) bool { | ||
| shardID := getShardID(taskID) | ||
| t.task[shardID].rw.Lock() | ||
| defer t.task[shardID].rw.Unlock() | ||
| _, ok := t.task[shardID].stats[taskID] | ||
| return ok | ||
| } | ||
|
|
||
| // AddSubTask AddTask add a task to the manager. | ||
| func (t *TaskManager[T, U, C, CT, TF]) AddSubTask(taskID uint64, task *TaskBox[T, U, C, CT, TF]) { | ||
| shardID := getShardID(taskID) | ||
| tc := tContainer[T, U, C, CT, TF]{ | ||
| task: task, | ||
| } | ||
| t.running.Inc() | ||
| t.task[shardID].rw.Lock() | ||
| t.task[shardID].stats[taskID].stats.PushBack(tc) | ||
| t.task[shardID].stats[taskID].running++ // running job in this task | ||
| t.task[shardID].rw.Unlock() | ||
| } | ||
|
|
||
| // ExitSubTask is to exit a task, and it will decrease the count of running pooltask. | ||
| func (t *TaskManager[T, U, C, CT, TF]) ExitSubTask(taskID uint64) { | ||
| shardID := getShardID(taskID) | ||
| t.running.Dec() // total running tasks | ||
| t.task[shardID].rw.Lock() | ||
| t.task[shardID].stats[taskID].running-- // running job in this task | ||
| t.task[shardID].rw.Unlock() | ||
| } | ||
|
|
||
| // Running return the count of running job in this task. | ||
| func (t *TaskManager[T, U, C, CT, TF]) Running(taskID uint64) int32 { | ||
| shardID := getShardID(taskID) | ||
| t.task[shardID].rw.Lock() | ||
| defer t.task[shardID].rw.Unlock() | ||
| return t.task[shardID].stats[taskID].running | ||
| } | ||
|
|
||
| // StopTask is to stop a task by TaskID. | ||
| func (t *TaskManager[T, U, C, CT, TF]) StopTask(taskID uint64) { | ||
| shardID := getShardID(taskID) | ||
| t.task[shardID].rw.Lock() | ||
| defer t.task[shardID].rw.Unlock() | ||
| l := t.task[shardID].stats[taskID].stats | ||
| for e := l.Front(); e != nil; e = e.Next() { | ||
| e.Value.(tContainer[T, U, C, CT, TF]).task.SetStatus(StopTask) | ||
| } | ||
| } |
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