tree 406fda2973407461cbadd7d0bf45afc109bfedad
parent 9b417e4f0f87da6bfe8dc5f02c987acfcb6dca31
author Sebastien Hertz <shertz@google.com> 1397469548 +0200
committer Sebastien Hertz <shertz@google.com> 1397469675 +0200

Clear unused roots from debugger

SingleStepControl and DebugInvokeReq hold roots which are only used during a
limited amount of time. Clear these roots once we finish using them.

Also cleans some code around single-step.

Change-Id: Ica2f65e04a4d60272199490cd40ad1803d3b9f02