wait function

  A Unix process is created when a process calls fork. Fork splits the running executable process into two parts. The sub-process will be allocated to the kernel stack. At the end of the stack, there is a thread_struct structure, which has a pointer

Normal exit of the process------------------1. Return from the main function.int main (...) {...return x;}Equivalent to:int main (...) {...Exit (x);}2. Call the Exit function of the standard C language.#include void exit (int status);1) Call process

ObjectiveIf the parent process does not end, and the child process terminates. The child process will always be a zombie process until the parent process calls the wait function to reclaim the child process or the parent process terminates.This

What if we wanted to call 1 shell scripts or execute 1 Bash shell commands when we were writing 1 C programs? In fact, the header file contains 1 function system () that calls the shell command or script, and it is convenient to simply pass the

JQuery is developed quickly. It has a major version every six months and a minor version every two months. Each version introduces some new features. What I want to introduce today is a new function & mdash;-deferred object introduced from jQuery1.5.

I. Thread Synchronization Basic Principles: In the synchronization process, the two most important concepts are:Synchronization object and wait Function. During thread synchronization, a synchronization object needs to be defined first. The

  POSIX thread: A completed thread/process consists of three parts: code + Data + Memory stack. When a sub-thread and sub-process are created, For fork () to create a sub-process, make a copy of all three parts, including the file descriptor,

First, what is the deferred object?In the process of developing a website, we often encounter some long-time JavaScript operations. Where there are asynchronous operations (such as AJAX reading server data) and synchronous operations (such as

Traditionally, the The above code will load four JavaScript files in turn: script1.js, script2-a.js, script2-b.js and script3.js. After loading the first three files, run the two functions initscript1 () and

Here are some simple examples to summarize some of the uses of this:1. The This in the method points to the object that is currently executing the method, such as:var name = "Window"var tom = { name:"Tom"; Show:function() {alert (this.

The proxy class for peerconnection is defined in the Trunk\talk\app\webrtc\peerconnectionproxy.h file, class Peerconnection:public Peerconnectioninterface, while # define BEGIN_PROXY_MAP (c) \Class C # #Proxy: Public C # #Interface所以BEGIN_PROXY_MAP (

First, what is the deferred object?In the process of developing a website, we often encounter some long-time JavaScript operations. Where there are asynchronous operations (such as AJAX reading server data) and synchronous operations (such as

Wait for timer kernel eventCreateWaitableTimer (Psecurity_attributes PSA,BOOL Fmanualreset,Pctstr pszname);The process can get its own handle to the existing waiting timer associated with the process.HANDLE Openwaitabletimer (DWORD

Objective:The specific kernel objects that can be waited for are:Process, thread, job, file and console standard input stream/output stream/error stream, event, waiting timer, semaphore, mutex.Wait function:DWORD WaitForSingleObject ( HANDLE

Concurrent ServerFirst of all, let's assume that there are two types of servers: first, the first connection request processing time is 1s, the 50th connection request processing time is 50s, the 100th connection request processing time is 100s.

This function is very important and will become the core method of jQuery in the future. It completely changes how to use ajax in jQuery. All ajax code of jQuery has been rewritten to implement it. However, it is abstract, difficult for beginners to

JQuery is developed quickly. It has a major version every six months and a minor version every two months. Each version introduces some new features. What I want to introduce today is a new feature introduced from jQuery1.5.0-the deferred

This article mainly introduces Deferred of deferred in jQuery. the promise () method reminds you to pay attention to deferred. promise () and jQuery's. the difference between promise () instance methods. For more information, see Deferred. promise ()

This article was seen on the web.First, what is the deferred object?In the process of developing a website, we often encounter some long-time JavaScript operations. Where there are asynchronous operations (such as AJAX reading server data) and

Analysis of jQuery deferred object usage, jquerydeferred The jquery deferred object is jQuery's callback function solution. It solves the problem of time-consuming operations, provides better control over those operations, and unified programming