Linux Kernel series-12. B. Operating System Development-jump from Loader to protection mode, 12. bloader
Now, the kernel has been loaded into the memory. It is time to jump into the protection mode.
The first is GDT and the corresponding selector. We only define three descriptors, which are 0 ~ 4 GB executable segment, a 0 ~ A 4 GB read/write segment and a segment pointing to the memory start address:
; GDT; Segment Base Address segment boundary, attr
Java. Lang. classloader is provided in the Java class library as the base class of the class loader.
Java Virtual Machine andProgramBoth call the loadclass method of classloader to load classes.
However, classloader is an abstract class. The real loader must be a subclass of classloader.
The classloader itself is also a Java class and needs to be loaded.
A bootstrap class
module loader and modularize javascript:
A module loader file. For example, loader. js
Multiple underlying modules (such as selector and UA) and multiple business modules (such as dialog and suggest)
Multiple page-related script call files
Advantages:
Load as needed: only the modules and files required for the current page are loaded,
(); Class appClass = appLoader.loadClass ("com.acme.devices.SinisterEngine"); ... ClassLoader appLoader = ... Class appClass = appLoader.loadClass ("com.acme.devices.SinisterEngine");
To be replaced by:
Bundle appBundle = ... Class appClass = appBundle.loadClass ("com.acme.devices.SinisterEngine");
Although we have to do a lot of work so that OSGi can load the application code for us, we have at least a graceful and correct way to do our job and work better than ever! Users can now Add/remove
This article is based on the first article, if you have not installed the Curl-loader Performance testing tool. Please refer to the Performance Test tool Curl-loader (Linux) First
This section specifically analyzes the use of Curl-loader, as well as the meaning of the parameters.
Simple performance testing and requirements environment:
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depend on Vue.js (jquery and Vue mixed scenarios):
Therefore, in the actual use of the need to lock, that is, when the script is loading, should not repeat the request script, waiting for the completion of the loading, followed by the implementation of the logic, there is promise this good tool, to achieve very simple.
Vue loader
var promisestack = [];
function Loadvue () {
var promise = $. Deferred ();
if (loadvue.lock) {
Promises
This article brings you the content is about how to use pure CSS to implement the loader (with source code), there is a certain reference value, the need for friends can refer to, I hope you have some help.
Effect Preview
Source code Download
Https://github.com/comehope/front-end-daily-challenges
Code interpretation
To define the DOM, there are only 1 elements:
Center display:
body {
margin:0;
HEIGHT:100VH;
Display:flex;
Align-items
In the last "https://www.cnblogs.com/webor2006/p/9246850.html" analysis source found two places to set the thread context ClassLoader code, as follows:Because it is a very important thing, so this time specifically for it to carry out the theme, the main role in order to change the principal and parental mode in some scenarios is not suitable or can not meet the needs, the following first write a simple test code:What is the output?That is, the context class
Installing Postcss-loadernpm install --save-dev postcss-loaderConfigure Webpack.config.js{ test:/\.css$/, use:[ ‘style-loader‘, ‘css-loader?importLoaders=1‘, ‘postcss-loader‘ ]}One approach is to configurepostcss.config.jsmodule.exports = { plugins: [ require(‘autoprefixer‘)({ /* ...options */ }) ]}The second way is to use
Through the use of jquery lazy loader plug-ins can be implemented to delay the loading of the picture, when the page is longer, will only load the user window of the picture, depending on the window of the picture will wait until you drag the scroll bar to the back before loading, so effective to avoid too many pictures and slow loading.
Using the Lazy loader plug-in is simple, just introduce the lazy
Introduction of Loader
"Class loader" (ClassLoader), as the name suggests, is used to dynamically load class files. The standard Java SDK has a ClassLoader class that enables you to load the required class files, provided that
ClassLoader class initialization must be made to the path of the class file.
The difference between the class file referenced by the Import keyword and the classloader dynamic load
ZZ from:http://blog.csdn.net/ly601579033/article/details/48318239
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The general flowchart is as follows:
After power-on, the Reset,arm core starts executing the Boot ROM, with the following actions: (code is cured in ROM)
1. Initialize the built-in SRAM stack
2, initialize the NAND/EMMC (mobile phone built-in storage)
3. Import the pre-loader stored in NAND into the SRAM
4. Jump to SRAM to
This document analyzes the usage of Loader and PluginLoader in ZendFramework. For your reference, ZendFramework provides Zend_Loader to dynamically load files. The usage is as follows: 1. how to load a file: Zend_Loader: loadFile ($ filename, $ dirsnull
This article analyzes the usage of Loader and PluginLoader in Zend Framework. For your reference, the Zend Framework provides Zend_Loader to dynamically loa
SQL * loader is a tool used to import external data from Oracle databases. it is similar to the load tool of DB2, but has more options. It supports variable loading modes, optional loading and multi-Table loading.
How to use SQL * LoaderWe can use the sqlldr tool of Oracle to import data. For example:Sqlldr Scott/tiger control = loader. CTLThe control file (loader
SQL * loader is a tool used to import external data from Oracle databases. it is similar to the load tool of DB2, but has more options. It supports variable loading modes, optional loading and multi-Table loading.
How to use SQL * LoaderWe can use the sqlldr tool of Oracle to import data. For example:Sqlldr Scott/tiger control = loader. CTLThe control file (loader
Package COM. jadyer. classloader; /*** go deep into the JVM root-Class Loader test * @ author macro Yu * @ editor Jan 24,201 2 11:23:22 pm * @ see ================ ========================================================== ===========================================* @ see Java. lang. class. the getclassloader () method API has the following description * @ see this method will return NULL in such implementations * @ see if this class was loaded by th
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