linux socket programming by example pdf

Recently in the Linux kernel to learn the red and black tree, found on the site is not a good example of the visual expression. Referring to the techniques of some great gods on the Internet, finally inThe terminal realizes the visual expression of the red-black tree.The red-black tree Code We used this time was copied from the Linux kernel: include/

This tool is seen through the Rpcgen Man manual to compile the RPC source program into a C language source program, making it easy to implement remote procedure calls.1. The following example program is the role of the client program (Fedora Linux) takes the central server is also Linux) time, the programming process i

LinuxLowerCMulti-thread programming example 2007Year 11Month 29Day Thursday10: 39 When learning things, examples are often the most interesting. I always learn basic theories and don't do it. I feel no sense of accomplishment. The following is an example. We create two threads to increase the number of threads.Maybe this in

Today, I learned a little bit about the shell programming under Linux and simply recorded the test cases.1. Edit the shell script file as follows:#!/bin/bashecho "Hello Bash Linux"echo "No. 0 parameter: $ A"echo "First parameter: $ $"echo "Current child shell process: $$"#pidarr = ' PS x | awk ' {print '} 'pidarr=$ (ps x | awk ' {print $} ')Echo $pidaddFor ID in

A small example of MySQL C programming in Linux-Linux general technology-Linux programming and kernel information. for details, see the following. To include the header file mysql. h MYSQL * conn; MYSQL_RES * res; MYSQL_ROW row; C

sockaddr_in srvaddr; struct sockaddr_in cliaddr; int len,port; Char hello[]= "hi,welcome to linux-code!\n"; if ((Sockfd=socket (af_inet,sock_stream,0)) ==-1) { fprintf (stderr, "Socket error:%s\n\a", Strerror (errno)); Exit (1); } /* Server-side FILLED SOCKADDR structure * * Bzero (srvaddr,sizeof (struct sockaddr_in)); Srvaddr.sin_family=af_inet; Srva

bets off this sentence}Pthread_cleanup_pop (0);Pthread_cleanup_pop (1);return (void *) 0;}Sleep (1); Two threads run successively indeterminateprintf ("Welcome Enter the func2!\n");Pthread_cleanup_push (void*) Clean, "The first time call!");Pthread_cleanup_push (void*) Clean, "The second time call!");if (argv) {Pthread_exit (NULL);}Pthread_cleanup_pop (0);Pthread_cleanup_pop (0);return (void *) 0;}int main () {pthread_t Tid1,tid2;if (Pthread_create (tid1,null, (void *) func1, (void *) 1)! = 0)

This article mainly introduces the openmp multi-thread programming example in linux. For more information, see Key syntax:Copy codeThe code is as follows:# Inlcude # Pragma omp parallel # Pragma omp for callback ction (+: variable) # Pragma omp critical // lock { } # Pragma omp parallel for private (x, y) // Each thread copies the x and y variables

Write a program, open 3 threads, the IDs of the 3 threads are a, B, C, each thread prints its own ID on the screen 10 times, the output must be displayed in the order of ABC, such as: Abcabc .... recursion in turn.Use conditional variables to implement:#include #include #include Static pthread_mutex_t Mtx=pthread_mutex_initializer;Static pthread_cond_t CondA;Static pthread_cond_t condb;Static pthread_cond_t Condc;void* Threada (void *arg){int a = 10;while (a--){Sleep (2);printf ("A begin.\n");Pt

#include Linux Pipeline Programming Example

threads and one consumer thread, and the producer's sleep time is five times that of the consumer, from the dynamic output, we can see that there is basically a dynamic balance, that is, five producers have produced five items at once, and the consumer consumes one copy for 1 second, just before the producer continues production. Iv. Introduction to spin locks and read/write locks (1) spin locks A spin lock is similar to a mutex lock, and has higher performance than a mutex lock.A very importa

thread, the two threads may not be executed in order, and they may be scheduled and executed in turn. If the two threads are scheduled to run in turn, the order of the printed 10 1 and 10 2 is not fixed. After thread 1 prints a few characters, it may not interrupt. the CPU is allocated to thread 2 for execution. This allows every thread to obtain CPU resources as much as possible. But it also brings about problems. If two threads access a variable together. Both threads modify the modification.

stat output, the conversion of the group ID to the group name, and the conversion of the time (Stat function time is Linux time, The number of seconds from 1970-1-1 to the moment).③ if it is a directory file, you need to read the list of files in the directory one at a time and store them on demand in the linked list, this example chooses a simple insert sort, and then reads the basic information of the fi

("msgsnd");D estorymessage (MsgId); exit (-2);}}Iii. receiving messages from the message queueThe function prototype for Message Queuing to receive messages is as follows:#include QID: identifier of the message queueMSGP: Message struct-body pointerMSGSZ: Message content SizeMsgtyp: Message TypeMSGFLG: Ibid.The code after encapsulation is as follows:void ReceiveMessage (int msgid,char* msg,int who) {Msgbuf buf;if (MSGRCV (msgid,buf,sizeof), Buf.mtext) who,0) { Perror ("MSGRCV");D estorymessage

People who understand the network transport protocol know that it is easy to use TCP to implement file transfer. As opposed to TCP, because UDP is a connectionless, unreliable transport protocol, we need to consider the issue of packet loss and the first to (packet order), so we want to implement UDP transfer files, we need to solve these two problems. The method is to number the packet, received and stored in the order of the package, the receiver sends the confirmation message to the sender af