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: context_switch (struct RQ *rq, struct task_struct *prev,struct task_struct *next) {struct mm_struct *mm, *old mm Prepare_task_switch (RQ, Prev, next); MM = next->mm; OLDMM = prev->active_mm; Arch_start_context_switch (prev); if (!mm) {next->active_mm = OLDMM; Atomic_inc (oldmm->mm_count); Enter_lazy_tlb (OLDMM, next); } else switch_mm (OLDMM, MM, next); if (!prev->mm) {prev->active_mm = NULL; rq->prev_mm = OLDMM; } spin_release (rq->lock.dep

. MostTwistedcode is clearly written, and its online documentation is great (at least at the level of open source software). But if you don't understand the model, whether it's readingTwistedthe source or useTwistedthe code is more or more relevant, you will find it very nerve-racking. So, I'll use the previous sections to introduce this model to let you master its mechanism, and later, to explainTwistedthe characteristics. In fact, at first, we don't useTwisted, instead, you will use a simplePy

Above is the address structure of the corresponding IpV4:Sin_len the size of the entire structuresin_family protocol family, corresponding to TCP fixed to af_inet, in addition to TCP Protocol support UNIX domain protocol, etc.Port for Sin_port socket communicationSIN_ADDR is an unsigned 32-bit network byte addressThe above structure only supports IPV4 address protocol, if we support other protocols, we have introduced the General Protocol address ProtocolIn use, the IPV4 protocol can be converte

This article used to be based on the refactoring of Sqlsessionfactorybean, a brief review of what has been done: New Sqlsessionfactorybean, the original code and mybatis-spring the same; The Buildsqlsessionfactory () method is used to extract a large number of if statements into a group of small methods, reserving the custom configuration method, and adding the getter method of common attributes; Extracts the component factory interface and provide

Review the development of Java Annotations (Annotation), reproduced two, are relatively basic, easy to understand. Getting started with a deep understanding of Java: Annotations (Annotation) custom annotations To drill down into annotations, we have to be able to define our own annotations and use annotations, before we define our own annotations, we have to understand the syntax of the meta annotations and the related definition annotations that J

configuration file. Second, when we want to do some logging, permission control, performance statistics, etc., in the traditional application we may be in need of objects or methods, and such as permission control, performance statistics are mostly duplicated, so there is a lot of code duplication code, even if some people say I extract the generic part, There must be calls or duplicates, like performance statistics we may only do when necessary, after the diagnosis to remove the code, as well

This article is mainly used to store CSS and CSS3 of the selector part of the Knowledge for future review and memory.The content is divided into two parts, the first part is the CSS selector of some basic knowledge. The second part is the new CSS3 added selector.Before we get started, let's start with a brief introduction to the selector, which is about locating the HTML elements of the page we want to style. Selectors can be divided into the followin

A basket of eggs in front of you, so you pick a few to take back to eat, what will you do? I think the general will be like this: can not say all take away, this is not good, but also to see which several large, and then pick those few! Today want to share with you a little bit, by the selection of the Data driven meaning! Say Han, maybe "data-driven" is not my proposition, but these four words are really appropriate, very consistent with my thinking, ready for long-term use, however, the probl

Welcome and Introductionoverviewreadinglog 9/9 videos and quiz completed; 10/29 Review; Note1.1 Welcome 1) What are machine learning? Machine learning are the science of getting compters to learn, without being explicitly programmed. 1.2 Introduction Linear regression with one variable Linear regression predicts a real-valued output based

as a compile-time exceptionThrowable Basic Methods getMessage () ? Gets the exception information, which returns a string. toString () ? Gets the exception class name and exception information, and returns a string. printstacktrace () ? Gets the exception class name and exception information, and the location where the exception appears in the program. return value void. Printstacktrace (printstream s) ? This method is typically used to store exception conten

result_match: result +=str (i) print (Result) Unfortunately, the failure ... The printed content contains not only text, but also some included tags, such as The defects of regular expressions are shown here. Let's use BeautifulSoup to parse the document. to use BeautifulSoup to parse the content, please review the article I wrote about getting started with crawlers. The code to get the div tag where the body is located is as follows: from Impor

Preface Today, in the Nuggets, I saw an article about the spring framework for the presentation, which referred to the face test of the cow net. So I downloaded the Cattle Network app, found the interview topic is very rich. I chose the Java aspect of the face test to do a bit. 10 topics for a group of interview questions, finished, I found myself a lot of wrong, most of them are basic questions. As the saying goes: The depth of the foundation determines the height of the future. I feel that I

asp+ 2000-10-31 · Zhao in Yesky Asp+ is the next generation version of ASP, but asp+ not from the ASP3.0 natural evolution, in many ways, asp+ and ASP are essentially different. Asp+ is completely based on modules and components, has better scalability and customization, data processing has introduced a number of exciting new technologies, it is these innovative new features, so that asp+ far beyond the ASP, but also to provide web developers with greater flexibility, Effectively shortens the d

Setupquickstartsdb.bat file for modification. Third Step Review Application Select MainForm.cs file in Visual Studio 2005 Solution Manager, select View | Designer menu, the application contains a DataGrid and several menus, and we will use the data Access Application block to count the number of customer in the database and load the data into the DataGrid. Step fourth to implement the Customer menu item 1