What does OAT mean?

android android-5.0-lollipop android-runtime
Snowcat8436 picture Snowcat8436 · Feb 10, 2015 · Viewed 23.2k times · Source

We know that Dalvik uses APK, DEX, and ODEX files. And we know this abbreviation means via AOSP source or Developers site.

(like this - https://source.android.com/devices/tech/dalvik/dex-format.html)

  • DEX means Dalvik EXcutable file.
  • ODEX means Optimized Dalvik EXcutable file.
  • APK means Android PacKage.

ART (Android RunTime) uses OAT and ART, but they do not explain the meaning anywhere.

Does anyone know the meaning of these shortened words?

Answer

Jesse Wilson picture Jesse Wilson · May 3, 2017

It’s Of Ahead Time, a silly reordering of Ahead Of Time. We went with that because then we say that process of converting .dex files to .oat files would be called quakerizing and that would be really funny.

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