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2）读-写互斥：不能同时有一个线程在读，而另一个线程在写；
3）读-读允许：可以有一个或多个读者在读；
4）读者优先的附加限制：如果读者申请进行读操作时已有另一个读者正在进行读操作，则该读者可直接开始读操作；
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A real model of examples show the contents of memory to compile NASM @ CPU and c...
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android 操作系统英文开发文档说明
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z xzx z
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惠普公司bios完整源代码大机密!
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