Golang의 동시 프로그래밍을 위한 새로운 아이디어: Goroutines의 향후 개발 방향 탐색

type Scheduler struct {
    queues []chan func()
}

func (s *Scheduler) Init(numQueues int) {
    s.queues = make([]chan func(), numQueues)
    for i := 0; i < numQueues; i++ {
        s.queues[i] = make(chan func(), 100)
        go s.run(i)
    }
}

func (s *Scheduler) run(queueIndex int) {
    for f := range s.queues[queueIndex] {
        f()
    }
}

func (s *Scheduler) Schedule(f func()) {
    queueIndex := // 根据自定义策略选择队列
    s.queues[queueIndex] <- f
}

type CondVar struct {
    lock     sync.Mutex
    waiters  []*sync.Cond
}

func (cv *CondVar) Wait() {
    cv.lock.Lock()
    defer cv.lock.Unlock()
    c := sync.NewCond(&cv.lock)
    cv.waiters = append(cv.waiters, c)
    c.Wait()
}

func (cv *CondVar) Signal() {
    cv.lock.Lock()
    defer cv.lock.Unlock()
    if len(cv.waiters) > 0 {
        cv.waiters[0].Signal()
        cv.waiters = cv.waiters[1:]
    }
}

type SharedResource struct {
    lock sync.Mutex
    counter int
}

func (sr *SharedResource) Increment() {
    sr.lock.Lock()
    defer sr.lock.Unlock()
    sr.counter++
}

func (sr *SharedResource) Decrement() {
    sr.lock.Lock()
    defer sr.lock.Unlock()
    sr.counter--
}

func main() {
    sr := &SharedResource{}
    
    for i := 0; i < 10; i++ {
        go func() {
            sr.Increment()
            // do something
            sr.Decrement()
        }()
    }
    
    // 等待所有Goroutines执行完毕
    // ...
}