BREAKING: New Runtime Compiler in Android 4.4 to Possibly Bring Better Performance in Future Releases

Posted by Unknown on Thursday, October 31, 2013

BREAKING: New Runtime Compiler in Android 4.4 to Possibly Bring Better Performance in Future Releases

Android 4.4 KitKat ushers in several new and exciting features, many of which we talked about last night. One new and unexpected feature addition, however, appears to be a different real time compiler engine. In addition to Dalvik, references to ART have appeared under Android's Developer Options menu. Not too long ago, Google purchased the French company Flexycore. And now, we may just be seeing the very first fruits from this purchase.

As can be seen in the screenshot to your right, there is now a menu allowing you to choose between Dalvik and ART within Developer options. Switching from Dalvik to ART switches from the libdvm.so library to libart.so. And rather than the ODEX files read by the Dalvik VM, ART appears to use OAT files. Accordingly, Android 4.4 source also includes a dex2oat program to convert ODEX files into OAT files compatible with ART.

It is important to keep in mind that this is currently "hidden," as it breaks the emulator. However, it has far reaching potential in that it can compile Android apps into more native code than what's currently available through Android's JIT.

Exciting times, folks. Looks like Android 4.4 will have plenty of new features that are just waiting to be uncovered.

[Many thanks to berwyn for the tip and to Pulser_G2 and Xplodwild for the additional research!]

_________
Want something on the XDA Portal? Send us a tip!Google+

Via xda-developers.com

{ 0 comments... read them below or add one }

Post a Comment