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Commits on Apr 27, 2022

• 复习了tcp三次握手，四次挥手以及滑动窗口并编写多进程服务器和客户端的通信，复习了信号捕捉

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Commits on Apr 26, 2022

• 复习了socket函数以及socket通信流程，一次通信的结束是由connect结束所开始

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Commits on Apr 24, 2022

• 学习字节序，大端小端字节序和socket传输时的网络字节序

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Commits on Apr 23, 2022

• 学习ARP以及网络通信过程，封装和分用

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Commits on Apr 20, 2022

• 复习网络基础

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Commits on Apr 17, 2022

• 学习了条件变量和信号量

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Commits on Apr 16, 2022

• 学习了死锁，读写锁和消费者生产者模型

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Commits on Apr 14, 2022

• 学习了线程的分离，取消和同步

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Commits on Apr 9, 2022

• 学习了多线程，线程的创建，退出和回收线程退出的资源函数

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Commits on Apr 6, 2022

• 学习了守护进程，其主要的思想就是让运行的进程脱离控制终端的管控，使得进程与控制终端分离，主要步骤为创建父子进程，父进程退出，子进程创建新的会话，脱离控制终端管控，子进程继承的内核区的有关系统的文件描述符表的重定向，防止当前终端输出相关信息，然后完成核心业务逻辑

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Commits on Apr 5, 2022

• 学习了共享内存，共享内存是ipc中效率最高的一种方式，将一块物理内存空间映射到进程的虚拟地址空间进行操作，因为他直接操纵内存，而内存映射还有文件io的操作，同时创建共享内存的步骤即shmget，shmat获得内存指针，然后进行操作，然后shmdt解除关联，然后shmctl删除共享内存，删除只是标记删除，共享内存还存在，只是标记删除后不可再关联此片共享内存，直到共享内存的链接数为0，共享内存销毁

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• 学习了两个信号捕获函数，学习了自定义信号集处理函数以及系统提供的与内核阻塞信号集交互的函数,可以修改，解阻塞和覆盖内核的阻塞信号集以及SIGCHLD信号

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Commits on Apr 3, 2022

• 学习alarm设置定时器，学习setitimer，每隔间隔设置一次，到时间发出sigalrm信号

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Commits on Apr 1, 2022

• 学习信号相关的知识，学习kill，raise，abort，kill可以传递信号给任意进程

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• 学习匿名内存映射以及完成匿名内存映射复制文件

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Commits on Mar 27, 2022

• 通过内存映射完成父子进程通信以及无关系进程的通信

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• 通过fork()以及fifo实现简易聊天功能,读写不互阻塞

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Commits on Mar 26, 2022

• 使用有名管道进行通讯

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Commits on Mar 21, 2022

• 子进程执行ps aux指令，让父进程接收

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• exec函数族和父子进程匿名管道通信

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Commits on Mar 17, 2022

• test ssh

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• 模拟ls -l命令以及学习lseek

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• 使用linux IO函数实现文件复制

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Commits on Mar 16, 2022

• 学习文件IO，C库和linux的IO函数区别

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• 学习makefile和gdb调试

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• 学习makefile和gdb调试

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Commits on Mar 14, 2022

• learning shared_lib and how to use and configure it

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Commits on Mar 13, 2022

• learn how to create static lib and use it to compile an executeable

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• first day

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