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BREAKING: New Runtime Compiler In Android 4.4 To Possibly Bring Better Perfomance In Future Releases.


Its good to know  that the Android 4.4 again comes up with new and exciting features. And its really surprising that an unexpected feature addition. However it looks like to be a different real time compiler engine. In addition to Dalvik, references to ART have appeared under Android's Developer Options menu. Its not been a while since Google purchased the French company Flexycore. While Flexycore has got nothing to do with ART, the purchase and ART compiler show Google's renewed focus on improving device performance.
 
As you could see a screenshot to your right, there is a now a menu allowing you to choose between Dalvik and ART within developer options. Switching from Dalvik to ART switches from libdvm.so library to libart.so. And besides the ODEX files ready by Dalvik VM, ART appears to use OAT files. Accordingly, Android 4.4source 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.
 
Its been really exciting to wait and watch for the plenty of new features that is coming along with Android 4.4

Source: More details regarding ART can now be found on the Android Source Code Documentation Website
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