v8

http://code.google.com/apis/v8/design.html The above page explains the optimization technique v8 team uses to enable fast property access. But how about it's object instances? New properties can be added to the object anytime, so it should be allowed to grow in size. Does it simply allocate the memory with a default size and when it hits the size limit creates a new buffer and copy the old instance to the new buffer? Or there's another cool trick? Newly allocated JavaScript object in V8 look like ( -> means "points to"): [ class ] -> ... ; pointer to the hidden class [ properties ] -> [empty

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: Recently, I've started a project under Qt5.1.0 . After some development, I choose to make a scripting system under Javascript with Google V8 . Under Windows 7 x64 , the only way to compile V8 is under msvc2012 , and I got 3 .lib files to use. In a single project using ONLY V8 , everything works well. But integrating V8 with an existent project using Qt5 it's a bit more complicated. Here is an example of a minimal code I'm using : (Of course, there is more file in this project...) #include <QApplication> #include <v8.h> using namespace v8;

I read in various places that it's advisable to be careful with the arguments object and that this is ok... var i = arguments.length, args = new Array(i); while (i--) args[i] = arguments[i]; But, is this ok or not?... function makeArray (l) { var i = l.length, array = new Array(i); while (i--) array[i] = l[i]; return array; }; //... //EDIT: put the function on an object to better represent the actual case var o = {}; o.f = function (callback) { var args = makeArray (arguments); callback.apply(args[0] = this, args); }; What is meant by "leaking arguments" and how does it affect optimisation? I

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I want a very basic HTML/CSS/JS renderer embedded in my app using WebKit and preferably V8. All I need is to always render one page and possibly make network and local requests (load JSON/msgpack). I don't need prefetch, tabs, omnibox, profiles and other chromium features, but from what I see looking at CEF is that it embeds a full featured chromium. Are there any other solutions? 文章来源: Embed basic WebKit + V8 in my app

I am learning through the architecture of Node.js. I have following questions. Is event loop a part of libuv or v8? Is event queue a part of event loop? are event queue generated by libuv or v8 engine or event loop itself? What is the connection between libuv and v8 engine? If event loop is single threaded, does libuv come into picture to create multiple threads to handle File I/O? Does browsers have event loop mechanism or just Node.js does? The event loop is, first and foremost, a high-level concept that's a fundamental part of the JavaScript programming model. Practically, every V8 embedder