ActionScript Virtual Machine 2
| Developer(s) | Adobe Systems and Mozilla |
|---|---|
| Development status | Obsolete |
| Written in | C++ |
| Operating system | Cross-platform |
| Type | Virtual Machine for ECMAScript |
| License | Tri-licensed GPL, LGPL, and MPL |
| Website | developer.mozilla.org/en/Tamarin |
Tamarin is a free software virtual machine with just-in-time compilation (JIT) support intended to implement the 4th edition of the ECMAScript (ES4) language standard. Tamarin source code originates from ActionScript Virtual Machine 2 (AVM2) developed by Adobe Systems, as introduced within Adobe Flash Player 9, which implements ActionScript 3 scripting language. ActionScript Virtual Machine 2 was donated as open-source to Mozilla Foundation on November 7, 2006, to develop Tamarin as a high-performance virtual machine, with the support from broad Mozilla community, to be used by Mozilla and Adobe Systems in the next generation of their JavaScript and ActionScript engines with the ultimate aim to unify the scripting languages across web browsers and Adobe Flash platform and ease the development of rich better performing web applications.
The source code, including the just-in-time compiler and conservative garbage collector, was donated to the Mozilla Foundation on November 7, 2006. The contributed code is tri-licensed under the GPL, LGPL, and MPL licenses to be developed in Mozilla's Mercurial repository. The contributed code is approximately 135,000 lines of code, making it the largest single donation of code to the Mozilla project besides Netscape itself.
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