The circular queue with the maximum capacity of n, the tail pointer of the queue is rear, and the head pointer of the queue is front,the condition for queue empty is ( ). A.A rear=front B.B (rear+1) MOD n=front C.C rear+1=front...
* @Description:*/publicclassConTest2 {privateintqueueSize = 10;privatePriorityQueue<Integer> queue =newPriorityQueue<Integer>(queueSize);privateLock lock =newReentrantLock();privateCondition notFull =lock.newCondition();privateCondition notEmpty =lock.newCondition();publicstaticvoidmain(String[] args)th...
一、事件Event Event(事件):事件处理的机制:全局定义了一个内置标志Flag,如果Flag值为 False,那么当程序执行 event.wait方法时就会阻塞,如果Flag值为True,那么event.wait 方法时便不再阻塞。 Event其实就是一个简化版的 Condition。Eve
在这个例子中,ProducerConsumerQueue类使用了Lock和Condition来实现一个线程安全的生产者-消费者队列,当生产者尝试向已满的队列中添加元素时,它会通过调用notFull.await()进入等待状态,同样地,当消费者尝试从空队列中移除元素时,它会通过调用notEmpty.await()进入等待状态。 当生产者成功地向队列中添加了一个元素后,...
条件锁condition与Queue() import queue import time import random import threading import asyncio import logging # from queue import Empty logging.basicConfig(level = logging.INFO,format = '%(asctime)s - %(levelname)s -->%(funcName)s at line %(lineno)d: \n %(message)s')...
voidtake(){while(isEmpty())(myMutex.lock();notEmpty.wait(myMutex);}intnode=taskQueue.front();taskQueue.pop();cout<<"ɾ������: "<<node<<", �߳�ID: "<<this_thread::get_id()<<endl;myMutex.unlock();// ����������notFull.notify...
(node);int interruptMode=0;// 如果这个节点的线程不在同步队列中,说明该线程还不具备竞争锁的资格while(!isOnSyncQueue(node)){// 挂起线程LockSupport.park(this);// 如果线程中断,退出if((interruptMode=checkInterruptWhileWaiting(node))!=0)break;}// 上面的循环退出有两种情况:// 1. isOnSyncQueue(...
(The java.util.concurrent.ArrayBlockingQueue class provides this functionality, so there is no reason to implement this sample usage class.) A Condition implementation can provide behavior and semantics that is different from that of the Object monitor methods, such as guaranteed ordering for notifica...
notify_one(); } void Take(T& x) { std::lock_guard<std::mutex> locker(_mutex); while (IsEmpty()) { std::cout << "empty wait.." << std::endl; _notFull.notify_one(); _notEmpty.wait(_mutex); } x=_queue.front(); _queue.pop_front(); _notFull.notify_one(); } bool ...
(TheArrayBlockingQueueclass provides this functionality, so there is no reason to implement this sample usage class.) AConditionimplementation can provide behavior and semantics that is different from that of theObjectmonitor methods, such as guaranteed ordering for notifications, or not requiring a lo...