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1.3 死锁线程试图对同一个互斥量A加锁两次。线程1拥有A锁，请求获得B锁；线程2拥有B锁，请求获得A锁【作业】：编写程序，实现上述两种死锁现象。1.4 读写锁与互斥量类似，但读写锁允许更高的并行性。其特性为：写独占，读共享。1.4.1 读写锁状态特别强调：读写锁只有一把...

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1.线程同步1.1 同步概念所谓同步，即同时起步，协调一致。不同的对象，对“同步”的理解方式略有不同。如，设备同步，是指在两个设备之间规定一个共同的时间参考；数据库同步，是指让两个或多个数据库内容保持一致，或者按需要部分保持一致；文件同步，是指让两个或多个文...

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