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For example, in Java, the Selector's select () method is used to implement this synchronous blocking operation waiting for an event to occur. In the implementation of select () under Linux operating system, a) will call epollCtl (epfd, opcode, fd, events) to register the events that have been registered in Initiation Dispatcher into Linux system, where fd means Handle and events means Handle events that we are interested in; B) Synchronize the occurrence of a blocked wait registered event by calling the epollWait method. Events on different event sources may occur at the same time. Once an event is triggered, the epollWait method will return. C) Finally, find the associated SelectorKeyImpl object by the event that occurred, set the event that occurred to the ready state, and then put the SelectorKeyImpl into the selectedSet. In this way, we can get the event-ready SelectorKeyImpl collection through the Selector.selectedKeys () method.　　南方边境某省最南端的边陲小镇。四周山峦围绕，一条公路通往繁华世界……马山在这个雾气飘渺的小镇上长大，参军，参战，负伤，退伍，结婚，生子……随后如愿地当上了一名小镇民警。马山有一支手枪，但是从来没有用过；但是马山知道，小镇因他和他的枪而安宁平和。但是一天早晨，他醒来的时候，枪不翼而飞了！面对着空空如野的枪套，马山的神经几乎崩溃。因为他知道，枪里装着三颗子弹……马山同样知道：偷枪的人，是要杀人的！马山如同一个焦虑的幽灵走遍了镇上的每一个角落，用目光机警地审视着身边的每一个人。一夜之间，小镇上所有的人都成了马山怀疑的对象！一夜之间，马山原本以为熟悉不过的小镇突然陌生了，并逐渐变幻成为一个危机四伏的陷井，显现出诡异危险的气息！小镇上的每一个人似乎都有偷枪的动机，每个人似乎都在拼命地对马山隐瞒着什么，甚Attack-Life这对夫妻已经结婚十年，有两个孩子。一天，妻子弗朗西斯（莎拉·杰茜卡·帕克 Sarah Jessica Parker 饰）醍醐灌顶般地开始重新审视自己的人生和紧张的婚姻关系，却发现想要一刀两断、重新开始，可没想象得那么容易。[Different Squat and Hard Pull Movements and Training in Strength Lifting and Weightlifting [Reprint/Collection]]无不心痒难耐，恨不得立刻就看到后续章节。21. The performance appraisal is not clear. A clear reward or punishment system should be established. The performance appraisal has been implemented since May, but the performance salary has not been implemented, causing speculation and dissatisfaction among employees.