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通过研究Linux的线程机制和信号量实现读者写者(Reader
通过研究Linux的线程机制和信号量实现读者写者(Reader-Writer)问题并发控制。
1)写-写互斥:不能有两个写者同时进行写操作;
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;
5)写者优先的附加限制:如果一个读者申请进行读操作时已有另一个写者在等待访问共享资源,则该读者必须等到没有写者处于等待状态后才能开始读操作。
-By studying the Linux thread mechanism and semaphores realize readers who write (Reader-Writer) the issue of concurrency control. 1) to write- write mutex: Can not write at the same time there are two write operations 2) read- write mutex: Can not have a thread at the same time in reading and writing another thread 3) Reading- Reading of permit: can have one or more readers read 4) the priority of additional restrictions readers: If the readers apply for a read operation, there was another reader being read, the reader can be directly started reading operation 5) to write additional priority Restrictions: If an application for a reader reading write operation has been in waiting for another visit to a shared resource, the read
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C algorithm to achieve bankers
用C实现银行家算法-C algorithm to achieve bankers
- 2023-07-07 16:00:03下载
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This is my job to achieve a small operating system is the file system that can d...
这个是我操作系统的小作业实现的是文件系统,可以进行文件增加删减等操作-This is my job to achieve a small operating system is the file system that can delete files and other operations to increase
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Class ucos operating system code, and want to be useful to interested friends
类ucos操作系统代码,希望对感兴趣的朋友有用-Class ucos operating system code, and want to be useful to interested friends
- 2022-02-22 09:34:40下载
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串口的vc演示程序,和调试助手类似哦,比较超值啊
串口的vc演示程序,和调试助手类似哦,比较超值啊-Vc serial demo program, and debug similar aides Oh, ah Comparison Value
- 2022-02-16 08:11:35下载
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ucosii的GUI
ucos GUI源代码,大家参考参考。不知道为什么字符还不够啊。-ucosii GUI
- 2022-06-13 01:19:08下载
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this is aes algorithm
this is aes algorithm
- 2022-02-02 04:29:09下载
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system verilog fifo env
system verilog fifo env
- 2022-03-23 17:28:56下载
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freedos32 the source code and dos compatible operating system. Now only 0. Versi...
freedos32的源代码,和dos兼容的操作系统。现在仅是0。05版本-freedos32 the source code and dos compatible operating system. Now only 0. Version 05
- 2023-02-17 17:45:03下载
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文件属性的改变以及移动文件的c语言程序源代码
文件属性的改变以及移动文件的c语言程序源代码-Change file attributes, and mobile file c language source code
- 2022-08-23 20:39:15下载
- 积分:1