notify

The notify() function is used to wake up one waiting thread (if any exists). Only threads that have called the wait() method can be awakened.

    
    
    
notify()

Examples

Use the notify() function to wake up waiting threads.

    javascript
    
    
function consumer(dict, condition) {
    while (true) {
        condition.acquire()
        while (dict.get("array").length == 0) {
            Log(threading.currentThread().name(), "wait()...", ", array:", dict.get("array"))
            condition.wait()
        }
        var arr = dict.get("array")
        var num = arr.shift()
        Log(threading.currentThread().name(), ", num:", num, ", array:", arr, "#FF0000")
        dict.set("array", arr)
        Sleep(1000)
        condition.release()
    }
}

function main() {
    var condition = threading.Condition()
    var dict = threading.Dict()
    dict.set("array", [])
    var t1 = threading.Thread(consumer, dict, condition)
    var t2 = threading.Thread(consumer, dict, condition)
    var t3 = threading.Thread(consumer, dict, condition)
    Sleep(1000)
    var i = 0
    while (true) {
        condition.acquire()
        var msg = ""
        var arr = dict.get("array")
        var randomNum = Math.floor(Math.random() * 5) + 1
        if (arr.length >= 3) {
            condition.notifyAll()
            msg = "notifyAll"
        } else {
            arr.push(i)
            dict.set("array", arr)
            if (randomNum > 3 && arr.length > 0) {
                condition.notify()
                msg = "notify"
            } else {
                msg = "pass"
            }
            i++
        }

        Log(_D(), "randomNum:", randomNum, ", array:", arr, ", msg:", msg)
        condition.release()
        Sleep(1000)
    }
}

See Also

Remarks

The notify() function wakes up one thread in the waiting queue.

When the notify() function wakes up a thread, that thread will reacquire the thread lock.

notifyAll

The notifyAll() function is used to wake up all waiting threads.

    
    
    
notifyAll()

Examples

For examples, please refer to the ThreadCondition.notify() section.

See Also

Remarks

The notifyAll() function wakes up all threads in the waiting state one by one, and the awakened threads will reacquire the thread lock.

wait

The wait() function is used to put a thread into a waiting state under specific conditions.

    
    
    
wait()

Examples

For examples, please refer to the content in the ThreadCondition.notify() section.

See Also

Remarks

The wait() function releases the thread lock and will reacquire the thread lock when the thread is awakened.

acquire

The acquire() function is used to request a thread lock (acquire lock).

    
    
    
acquire()

Examples

For examples, please refer to the content in the ThreadCondition.notify() section.

See Also

Remarks

The thread lock of the current condition object must be requested (acquired) before calling wait().

release

The release() function is used to release the thread lock (unlock).

    
    
    
release()

Examples

For examples, please refer to the content in the ThreadCondition.notify() section.

See Also

Remarks

After calling wait(), you need to release the thread lock (unlock) of the current condition object.