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1. What is system call In the Linux World, we often encounter the term system call. The so-called system call is a series of functions provided by the kernel with very powerful functions. These system calls are implemented in the kernel, and then

A simple echoserver. Listen on the configured network address (or 0.0.0.0) // create listen int init_listen_sock(int epsfd, unsigned short port) { std::vector ip_list; if (!get_ipv4_addr(ip_list)) return 1; for (int i = 0; i

1. C-based BSD socket (a common network interface in UNIX systems )Feel BSD sockets easiest to understand, easiest to get started with, most flexible but most difficult to use, especially for large projectsNeed to import header file#import #import

The error in this article refers to an error that occurs when the code compiles a completely correct program to run, because there is no successful invocation of some system call functions in the program. Often these system call functions use a

This article is about the difference and connection between wait and Waitpid. To avoid the creation of a zombie process, whenever we create a subprocess, the master process waits for the child process to return to clean up the subprocess.  To do

Inux system Programming I've been looking at the Original link http://www.cnblogs.com/skyme/archive/2011/01/04/1925404.htmlShared memory is a piece of memory that is reserved for the system to be considered for communication between multiple

Turn http://www.cnblogs.com/Seapeak/archive/2010/04/08/1707807.htmlThe comrades who use C to develop network programs on the Linux platform are generally familiar with the famous libevent. But new people that have come into this field are confused.

The set_error_handler () function sets the custom error handling function. This function is used to create your own error handling methods during runtime. This function returns the old error handler. If it fails, the system returns the null

# Identifying system performance bottlenecks # strace & ltraceStrace and ltrace correspond to system calls and library function calls respectively. system calls actually refer to the underlying call. In the linux program design, they refer to the

When we write a program, there will inevitably be problems (often problems), and when PHP encounters an error, it gives the location of the error script, the number of rows, and the reason. A lot of people say it's not a big deal. Indeed, during the

The set_error_handler () function sets the custom error handling function. This function is used to create your own error handling methods during runtime. This function returns the old error handler. if it fails, the system returns the null

The set_error_handler () function sets the custom error handling function. This function is used to create your own error handling methods during runtime. This function returns the old error handler. if it fails, the system returns the null

Summary of Set error handler function usage in PHP, SetHandler The Set_error_handler () function sets the user-defined error-handling function. This function is used to create the user's own error handling method during runtime. The function

Summary of the use of the seterrorhandler function in PHP, sethandler. Summary of the use of the seterrorhandler function in PHP. the sethandlerset_error_handler () function sets the custom error handling function. This function is used to create

The Set_error_handler () function sets the user-defined error-handling function. This function is used to create the user's own error handling method during runtime. The function returns the old error handler and returns null if it fails. Let's

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The implementation of the server and the client chat with each other, no order restrictions, can be carried out at the same time. Service side: SERVER.C #include #include #include #include #include #include #include #include #include #include

Installing GCC previously seemed smooth, but I don't know what's going on today. An error has been used to install GCC using the Yum command on a virtual machine on a centos system. The installation instructions I perform are: yum-y install gcc

What is the relationship between Nginx Tengine openresty? Tengine is equivalent to Nginx's two development, making some changes that add unique featuresOpenresty is an enhanced version of Nginx that extends a number of modules, featuring the LUA

The code under Windows is as follows Server.cpp #include Client.cpp #include The following code for Linux is as follows:Makefile CLI=CLI ser=ser dir=. cc=g++ ser_obj=$ (dir)/ser.o cli_obj=$ (dir)/cli.o ser_src=$ (dir)/ser.cpp