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I'll use a few blogs to summarize some of the ways in which you can communicate between processes in Linux, and I'm going to make this summary part of the beginning in every blog in this series.Ways to communicate between processes Pipeline

Piping (pipe)In Linux, pipelines are also a kind of file, but more special, we can use the pipe function to create a pipeline, its prototype is declared as follows:# Inlcude intpipe (int fields[2]); tune? Use the pipe function to open up in the

First, the basic Knowledge Source program compilation/***hello.c***/int main () {printf ("hello,world.\n"); return 0;}Gcc-o Hello hello.c-O Generate executable file-C Output only target code-G to debugMakefile Writing# # # #makefile1 # #MAIN:MAIN.O

There are some basic rules to be followed when writing daemons to prevent unnecessary interactions, which are described below, followed by a function deamonize written according to these rules.(1) First, call Umask to set the file creation screen

1. Standard Flow PipingPipeline Operations Support file stream mode, which is used to create a pipeline that links another process, through functions Popen and PcloseThe specific introduction of Popen in this blog:linux multi-process learning is

UNIX Domain sockets introduction UNIX domain sockets are used to communicate between processes running on the same machine. Although Internet domain sockets can be used for the same purpose, UNIX domain sockets are more efficient.UNIX domain sockets

IntroductionThis article writes a concurrent server (concurrent server) program that fork out a child process for each client request.Attention1. Signal Processing problems For the same signal, according to the order of the signal is processed

Unknowingly two weeks did not post, because "10,000 U.S. dollar Ford Scholarship Defense", ACM Contest, network paper reading and network work a lot of things to disperse the time, so write a blog post to fill up before a hole.A blog post about

The code is as follows:#include #include#include#include#include#includeinlineintMysystem (Const Char*cmd) {pid_t pid; if(cmd = = NULL)return 1; intstatus; if(PID = fork ()) 0) Status =-1; Else if(0==pid) {Execl ("/bin/sh","SH","- C", CMD, (Char*)0);

A parent-child process can interact with the data through a pipeline, and a pipeline can have only one data flow, and to achieve duplex communication, two pipelines are implemented. How the Pipeline works: Request a pipe

ObjectiveThis article will be divided into two parts, the first part of the implementation of a pair of concurrent back-up Server/client program (see the previous article in this part can not see the repetition); The second part is the server to add

Communication effects between processes1. Data transfer: A process needs to upload his data to other processes2. Resource Sharing3. Process notification Events4, Process Control: Some processes completely control the execution of another process,

The conversion of the IP of the string to the 32 IP说明 网络上的IP都是数字加点(192.168.0.1)构成struct in_addr结构使用32位的IP，如IP(C0A80001)是192.168.0.1int inet_aton(constcharstruct in_addr *inp)将a.b.c.d的IP转换为32位的IP，存储在 inp指针里面char *inet_ntoa(structin)

1#include 2#include 3#include 4#include string.h>5 #defineMAXLINE 106 intMainvoid)7 {8 CharBuf[maxline];9 pid_t pid;Ten intstatus; Oneprintf"%%"); A while(Fgets (buf,maxline,stdin)! =NULL) { - if(Buf[strlen (BUF)-1] =='\ n') -Buf[strlen (BUF)-1]

The system () function is powerful, I know more about the implementation of Linux, the specific analysis of this, the similar in Windows is an unknown solution. OK, first look at the Linux version of the system function source code: #include

Man vfork:NAMEVfork- Create a child process and block parentSynopsis#include #include pid_t vfork (void);DESCRIPTIONStandard description(from Posix.1) The Vfork () function has the same effect as fork (2), except that the behav‐IOR is undefined if

IntroductionThis article writes a concurrent server (concurrent server) program that fork out a child process for each client request.Attention1. Signal Processing problemsFor the same signal, according to the order of the signal is processed

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1, first to clarify the meaning of the process and thread:Process is a program with a certain independent function on a data set on a running activity, is the system for resource allocation and scheduling of an independent unit . Compared with a

A classic example of concurrent access to a server using a multiple process approach. Program Implementation function: 1. The client reads a line of text from the standard input and sends it to the server. 2. The server receives the text sent by