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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.You will also see this kind of green machine, which is relatively old.2020年3月，《人间世》纪录片团队再度出发。这一次，我们依然和一线医护在一起，和重症患者在一起；和医学专家在一起，也和老人与孩子在一起。我们记录下故事，也记录下残章；记录生的欢畅，也记录死亡。历时两个多月，我们拍摄了逾三万分钟的素材，剪辑成四集160分钟纪录片。英布则是回府陪伴娇妻，陈平等一干家臣暂居武信君府，跟着项梁回府去了。The number of casualties in various countries in World War II was 3,000,000 in Japan.雍正年间，三阿哥弘时聪颖伶俐智勇双全却受人挑拨后导致皇上对自己日渐疏远。因此遭人嫉恨，被人追杀。中箭后的他意外穿越300年后的21世纪，成为林氏集团的准继承人。也因为早有婚约的关系与刁蛮任性的大小姐宗梦笛及宗氏集团二股东之子开了一段真挚浪漫的而又错综复杂的情感纠葛。宿命的情感轮回，以及王权及利益的致命危机。一场旷世奇缘，带着致命诱惑的爱情背后，深藏一个难以回首的伤痛秘密和惊天阴谋。美国尼米兹号航空母舰在例行维修时，遭遇奇怪的风暴，突然与美国太平洋舰队失去联系。在遭遇日本“0”式侦察机和发现珍珠港泊满了二战前的战舰后，舰上官兵们才意识到，自己所在的航空母舰穿过时光隧道，回到了二次世界大战前夕的珍珠港，舰上官兵进一步发现正要对珍珠港发动攻击、启发战端的日本航空母舰舰群，要么凭借自己先进的战斗机和导弹对日本舰队抢先发动进攻，进而避免珍珠港惨遭浩劫，同时改变历史；要么远离珍珠港让历史顺其自然地发展。更令众人烦恼的是，他们救起的参议员在日本对珍珠港发动袭击前瞬间消失了。袭击迫在眉睫，他们不得不做出抉择……