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Linux Process thread learning notes: running newProgram Zhou yinhui   As we mentioned in the previous article, when a new process is started, the new process will copy most of the context of the parent process and then runCodeIf we make the

I have studied software engineering. software Engineering is a required course for every programmer. if you have never studied, we suggest you take a look. in this chapter, we will learn the idea of network programming from the perspective of

Before I submitted and installed the child-runs-first patch, I did an experiment to verify the results of my previous theoretical analysis, in my opinion, sub-processes may be more likely to seize the parent process no matter how they seize the

Pipeline (PIPE ):Used for communication between kinship processes (such as parent and child processes and sibling processes)A process writes data to the pipeline: the number of bytes written is smaller than pipe_buf, which is an atomic operation.

Introduction In this article, we will learn about the GNU/Linux pipeline. Although the pipeline model is very old, it is still a very useful inter-process communication mechanism. We will learn what a semi-bidirectional pipeline is and what a famous

8.9About the definition of parallelism I've written an article before, for reference:The difference between concurrency and parallelism the differences between Concurrency and Parallel+----------------------------+| Process pair Concurrent?|+-----

File Descriptor Redirectioncat : Redirecting input to test01 filecat>test02 : Redirect the standard correct output to the test02 file, and the input device is redirected to the test01 file. Content is overwritten if test02 exists. The output file

Guardian Process ConceptsDaemons are also known as daemon processes, which are a special process that runs in the background. He is independent of the terminal and periodically performs some sort of task or waits for something to happen. Daemons are

This example overrides the Title:implementing software timers example of Don LibesWhy this feature is needed because most computer software clock systems usually have only one clock to trigger an interrupt. When running multiple tasks, we would like

Process RelationshipsProcess GroupA process group is a collection of one or more processes. Typically, they are combined in the same job, and each process in the same process group receives various signals from the same terminal, each with a unique

A daemon is a process that has a long lifetime. They often start when the system boots, and only terminate when the system shuts down. Because they do not have control terminals, they are running in the background.Features of the daemon processThe

The so-called concurrent server is at the same time can handle requests from multiple clients; A circular server is a request that the server can respond to only one client at a time. And for TCP and UDP sockets, the two servers are implemented in

Copy-on-write technology was originally generated by UNIX systems to implement a fool-like process creation: when a fork () system call is made, the kernel copies the entire address space of the parent process as-is and assigns the copied copy to

The only way to create a new process in Linux is to use the fork () function. The fork () function is a very important function in Linux, and there are some differences from previous functions, because the fork () function looks like it executes

First, the introductionFork is one of the most difficult concepts for anyone who has not touched the Unix/linux operating system: it executes once and returns two values. The fork function is one of the most outstanding achievements of the UNIX

Linux Server Development Preliminary Chen Qin Yang          server development needs to consider a lot of things, such as server architecture, stability, performance and load capacity, and so on. In fact, in the process of developing a server,

System: CentOS 5.91. Install expectYum-y Install expect 2. Configure the anti-SSH agent disconnect script The code is as follows Copy Code VI sshproxy.sh#!/usr/bin/expect-fSet Timeout 60Spawn/usr/bin/ssh-qtfncngd 7070-g

Inter-process Communication modeInter-process communication methods include pipelines, shared memory, signals, semaphores, message queues, sockets.Purpose of inter-process communicationThe main purpose of inter-process communication is: data

in the in Linux0.11, process switching is based on the TSS mechanism provided by Intel , to switch from one process to another, that is to switch the TSS this structure. However, such switching is inefficient, so Linux and Windows later changed to

Article Title: Linux Network Programming-9. server model. Linux is a technology channel of the IT lab in China. Includes basic categories such as desktop applications, Linux system management, kernel research, embedded systems, and open source. I