select function

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Select in the socket programming is still more important, but for beginners socket people are not too fond of using Select to write programs, they are just used to writing such as Connect, accept, Blocking programs such as recv or recvfrom (the

The main is to simulate some Web pages in the table to achieve the full selection function. Your favorite sport is: Select All/Select All Soccer Basketball Badminton Table tennis When we click the Select All/Uncheck All button, the following

Summary of select device timeout usage Currently, the common method for setting SOCKET connect timeout on each platform is to use select (). The specific method is as follows: 1. Establish socket; 2. Set the socket to non-blocking mode; 3. Call

The Select system call enables our program to monitor the State Changes of multiple file handles (file descriptor. The program stops at select and waits until one or more of the monitored file handles change their status. There are a lot of files in

Select Function This function allows the process to instruct the kernel to wait for any one of multiple events and wake up only when one or more events occur or wait for a specified period of time. We call select to inform the kernel of the

It is not original. It is copied from Baidu space. The Select system call enables our program to monitor the State Changes of multiple file descriptors. The program stops at select and waits until one or more monitored file descriptors change their

The Select system call enables our program to monitor the State Changes of multiple file handles (File descr extends ptor. The program stops at select and waits until one or more of the monitored file handles change their status. File in the

Analysis of High-performance I/O models Analysis of High-performance IO Models   High-performance I/O models are often required for Server programming. There are four common I/O models: (1) Synchronous Blocking I/O (Blocking IO): the traditional

The Select system call enables our program to monitor the State Changes of multiple file handles (file descriptor. The program stops at select and waits until one or more of the monitored file handles change their status. There are a lot of files in

Clamav AntiVirus software source code analysis notes [8] Hedgehog @ http://blog.csdn.net/littlehedgehog [Command] The last time we talked about the main loop (accept_th), this is an endless loop, because Clamd is stuck and waiting for a client

Server-side programming often requires the construction of a high-performance IO model, with four of common IO models:(1) Synchronous blocking IO (Blocking io): The traditional IO model.(2) Synchronous non-blocking IO (non-blocking io): The socket

1.I/O Basic Knowledge 1.1What is a file descriptor? In a network, a socket object is a 1 file descriptor, and in a file, 1 file handles (that is, the files object) are 1 file descriptors. In fact, it can be understood as a "pointer" or "handle",

analysis of high performance IO model Server-side programming often requires the construction of high-performance IO models, with four common IO models: (1) Synchronous blocking IO (Blocking io): The traditional IO model. (2) Synchronous

1 . The so-called I/O multiplexing means that the kernel notifies the process when it discovers that one or more I/O conditions specified by the process are ready to be read. I/O multiplexing is suitable for the following occasions: (1) When a

Reprinted from Http://www.cnblogs.com/fanzhidongyzby/p/4098546.htmlServer-side programming often requires the construction of a high-performance IO model, with four of common IO models:(1) Synchronous blocking IO (Blocking io): The traditional IO

Transferred from: http://www.cnblogs.com/fanzhidongyzby/p/4098546.htmlThis is the clearest article I've ever seen explaining the IO model, and of course, if you want to learn more about it, continue to chew on the Sapphire book.Server-side

Linux select () (reproduced) -------------- Baidu encyclopedia # Include # Include # Include Int select (NFDs, readfds, writefds, limit TFDs, timeout) Int NFDs; Fd_set * readfds, * writefds, * required TFDs; Struct timeval * timeout; NDfS: the

See an I/O performance issue today. I think about this question. Several common I/O analysis under Linux in this blog here Analyzing blocking, non-blocking I/O, one thing in common is that many I/O are not able to confirm that I/O is ready and can

See an I/O performance issue today. I think about this question.Analyzing blocking, non-blocking I/O, one thing in common is that many I/O are not able to confirm that I/O is ready and can only be polled by a single polling method, which is