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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.临北市公安局刑警队长郑大军在破获一个贩毒案的时候得知自己的老师梅景扬夫妇被杀害，发誓要抓到杀害恩师的凶手。郑大军很快发现了犯罪嫌疑人，一个越狱的亡命徒黑虎。而沈东健因杀害恩师所以心理冲击很大，希望能够押运脱犯罪的阴影做一个“好人”。然而他的义父欧阳沧对他留下梅雪的做法极为不满，沈东键痛苦的前熬着，一方面与警方对抗来掩藏了黑虎；一方面，他加倍关怀梅雪，让自己的心理得到平衡……你只管带人去，按我吩咐的打点分派各项军需。Tashi Villagers: I don't believe it. I didn't believe it at that time. You lied.几位副将军忍无可忍，有人对黎章厉声呵斥，有人派军士去请顾涧——他带着胡钧去了辕门外，安抚第五将聚众闹事的人去了——总之，一定不能让黎章杀了公主，那事态真是无可挽回了。Not only does it mean that after the content production is completed, the operation measures are over. These contents should be better distributed inside and outside the product, so as to make full use of the content and maximize the value of the content.