80 lines
1.2 KiB
Go
80 lines
1.2 KiB
Go
package pool
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import (
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"sync"
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)
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type TaskPool struct {
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workers int
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queue chan Task
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wg sync.WaitGroup
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lck sync.Mutex
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curTaskID int
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waitMap map[int]chan struct{}
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}
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func NewTaskPool(maxWorkers, bufferSize int) *TaskPool {
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return &TaskPool{
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workers: maxWorkers,
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queue: make(chan Task, bufferSize),
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waitMap: make(map[int]chan struct{}),
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curTaskID: 1, // task id starts from 1
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}
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}
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func (tp *TaskPool) Start() {
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for i := 1; i <= tp.workers; i++ { // worker id starts from 1
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worker := NewWorker(i, tp.queue, tp)
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tp.wg.Add(1)
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go worker.Start(&tp.wg)
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}
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}
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func (tp *TaskPool) AddTask(f func()) int {
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tp.lck.Lock()
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id := tp.curTaskID
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tp.curTaskID++
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waitChan := make(chan struct{})
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tp.waitMap[id] = waitChan
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tp.lck.Unlock()
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task := Task{id: id, f: f}
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tp.queue <- task
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return id
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}
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func (tp *TaskPool) WaitForTask(taskID int) {
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tp.lck.Lock()
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waitChan, ok := tp.waitMap[taskID]
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if !ok {
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tp.lck.Unlock()
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return
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}
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tp.lck.Unlock()
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<-waitChan
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}
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func (tp *TaskPool) markTaskComplete(taskID int) {
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tp.lck.Lock()
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defer tp.lck.Unlock()
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waitChan, ok := tp.waitMap[taskID]
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if !ok {
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return
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}
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close(waitChan)
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delete(tp.waitMap, taskID)
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}
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func (tp *TaskPool) Stop() {
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close(tp.queue)
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tp.wg.Wait()
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}
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