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A user
A user-space device driver can do many of the things that kernel drivers can t, such as perform a long-running computation, block while waiting for an event, or read files from the file system. Unlike kernel drivers, a user-space device driver can use other device drivers--that is, access the network, talk to a serial port, get interactive input from the user, pop up GUI windows, or read from disks. User-space drivers implemented using FUSD can be much easier to debug it is impossible for them to crash the machine, are easily traceable using tools such as gdb, and can be killed and restarted without rebooting even if they become corrupted. FUSD drivers don t have to be in C--Perl, Python, or any other language that knows how to read from and write to a file descriptor can work with FUSD. User-space drivers can be swapped out, whereas kernel drivers lock physical memory.-A user-space device driver can do many of the things that kernel drivers can t, such as perform a long-running comput
- 2022-11-28 07:20:03下载
- 积分：1
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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
- 2022-02-06 09:26:49下载
- 积分：1
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应用rapidemo RAPI函数copydevicetopc
rapidemo rapi函数的应用CopyDeviceToPC-Application rapidemo rapi function CopyDeviceToPC
- 2022-01-25 20:11:11下载
- 积分：1
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a complete multi
一个完整的多用户银行家算法-a complete multi-user bankers Algorithm
- 2022-03-25 06:57:18下载
- 积分：1
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bankers algorithm. Resolve Deadlock
银行家算法.解决死锁问题-bankers algorithm. Resolve Deadlock
- 2022-04-17 09:22:05下载
- 积分：1
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developed abroad MACH
国外开发的著名分布式操作系统mach的有关代码文章，很有参考价值-developed abroad MACH-distributed operating system code in the articles of great reference value
- 2022-03-24 06:53:50下载
- 积分：1
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本书用大量的篇幅讲述了与计算机原理相关的条种编码方法，并通过数字逻辑电路(包括逻辑与开关，逻辑门电路与触发器，二进制加法器等)以及存储器、微处理器的形式、组织及...
本书用大量的篇幅讲述了与计算机原理相关的条种编码方法，并通过数字逻辑电路(包括逻辑与开关，逻辑门电路与触发器，二进制加法器等)以及存储器、微处理器的形式、组织及发展阐述了编码的实现。此外，本书还涉及到计算机系统、操作系统、编程语言等的产生及发展，甚至对计算机图形化的相关技术也给了一个全面的描述。阅读本书，相信您会从它图文并茂的编排组织，通俗风趣的语言文字、简练丰富的背景知识中体会到作者超凡的智慧和深邃的学问。本书定会带你去畅游计算机内部世界并和你共同去探索编码的奥秘。本书适合各种技术背景的人阅读，并可作为高等院校计算机或非计算机专业的教材使用-This book with plenty of space to talk about with computer-related articles of the principle of encoding method, and through digital logic circuit (including logic and switches, logic gates and flip-flops, binary adder, etc.) as well as the memory, microprocessor form Organization and development on the realization of coding
- 2022-03-05 03:56:59下载
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test GPIO program code
测试GPIO程序代码
- 2022-03-04 20:28:01下载
- 积分：1
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很好用的域名代理系统，很好，我X这个站真J8麻烦
很好用的域名代理系统，很好，我X这个站真J8麻烦-A good proxy to use the domain name system, very good, I really X this station J8 trouble
- 2022-01-25 17:07:13下载
- 积分：1
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本项目是一款内存动态分区分配模拟程序。用户通过本程序可以了解动态分区分配方式中使用的数据结构和分配算法，加深对动态分区存储管理方式及其实现过程的理解。...
本项目是一款内存动态分区分配模拟程序。用户通过本程序可以了解动态分区分配方式中使用的数据结构和分配算法，加深对动态分区存储管理方式及其实现过程的理解。-The project is a dynamic partitioning of memory allocation simulation program. Users through the process can understand the dynamic partition allocation methods used in data structure and distribution of algorithms, understanding of dynamic partitioning storage management approach and its realization process of understanding.
- 2023-04-07 23:50:04下载
- 积分：1
