موتور V8 و تکنیک های بهینه سازی

محمد حسن گیلک

mgilak2@gmail.com

twitter @hasangilak

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موتور V8 و تکنیک های بهینه سازی

محمد حسن گیلک mgilak2@gmail.com

call stack


call stack


call stack


call stack


call stack


call stack


call stack


call stack


call stack


Hidden classes


Hidden classes


Hash Table


Hash Table


Hash Table


Hash Table


Garbage Collection


Garbage Collection


Garbage Collection


Memory Leak


  • مقدار قابل توجهی از حافظه به برنامه اختصاص داده میشه.
  • اکثر این حافظه ها به دلیل غیر قابل دسترس بودن علامت گذاری میشن ( به فرض ما نال کردیم پوینتری رو که به اطلاعات کش ما دسترسی داشت و دیگه بهش نیاز نداریم )
  • دیگه هیچ اختصاص حافظه ای رخ نده.

Memory Leak


Memory Leak


Memory Leak


Memory Leak


Memory Leak

Memory Leak

Event Loop

Rendering

Rendering

Point of View

Press ESC to enter the slide overview.

Hold down alt and click on any element to zoom in on it using zoom.js. Alt + click anywhere to zoom back out.

Touch Optimized

Presentations look great on touch devices, like mobile phones and tablets. Simply swipe through your slides.

Fragments

Hit the next arrow...

... to step through ...

... a fragmented slide.

Fragment Styles

There's different types of fragments, like:

grow

shrink

fade-out

fade-right, up, down, left

fade-in-then-out

fade-in-then-semi-out

Highlight red blue green

Transition Styles

You can select from different transitions, like:
None - Fade - Slide - Convex - Concave - Zoom

Themes

reveal.js comes with a few themes built in:
Black (default) - White - League - Sky - Beige - Simple
Serif - Blood - Night - Moon - Solarized

Slide Backgrounds

Set data-background="#dddddd" on a slide to change the background color. All CSS color formats are supported.

Down arrow

Image Backgrounds

<section data-background="image.png">

Tiled Backgrounds

<section data-background="image.png" data-background-repeat="repeat" data-background-size="100px">

Video Backgrounds

<section data-background-video="video.mp4,video.webm">

... and GIFs!

Background Transitions

Different background transitions are available via the backgroundTransition option. This one's called "zoom".

Reveal.configure({ backgroundTransition: 'zoom' })

Background Transitions

You can override background transitions per-slide.

<section data-background-transition="zoom">

Pretty Code


function linkify( selector ) {
  if( supports3DTransforms ) {

    var nodes = document.querySelectorAll( selector );

    for( var i = 0, len = nodes.length; i < len; i++ ) {
      var node = nodes[i];

      if( !node.className ) {
        node.className += ' roll';
      }
    }
  }
}
					

Code syntax highlighting courtesy of highlight.js.

Marvelous List

  • No order here
  • Or here
  • Or here
  • Or here

Fantastic Ordered List

  1. One is smaller than...
  2. Two is smaller than...
  3. Three!

Tabular Tables

Item Value Quantity
Apples $1 7
Lemonade $2 18
Bread $3 2

Clever Quotes

These guys come in two forms, inline: The nice thing about standards is that there are so many to choose from and block:

“For years there has been a theory that millions of monkeys typing at random on millions of typewriters would reproduce the entire works of Shakespeare. The Internet has proven this theory to be untrue.”

Intergalactic Interconnections

You can link between slides internally, like this.

Speaker View

There's a speaker view. It includes a timer, preview of the upcoming slide as well as your speaker notes.

Press the S key to try it out.

Export to PDF

Presentations can be exported to PDF, here's an example:

Global State

Set data-state="something" on a slide and "something" will be added as a class to the document element when the slide is open. This lets you apply broader style changes, like switching the page background.

State Events

Additionally custom events can be triggered on a per slide basis by binding to the data-state name.


Reveal.addEventListener( 'customevent', function() {
	console.log( '"customevent" has fired' );
} );
					

Take a Moment

Press B or . on your keyboard to pause the presentation. This is helpful when you're on stage and want to take distracting slides off the screen.

Much more

THE END

- Try the online editor
- Source code & documentation