Overview

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Ares

Ares is an automatic runtime recovery JVM.

BUILD

  1. Install libhiredis
  2. Install a prebuilt JDK 8, e.g., jdk1.8.0u65
  3. Check make/quick_build.sh

Known Bugs

  1. Currently, we do not clear expression stack before recovering. This is in deed a bug that will crash if GC happens during recovering, particularly when using JPF. We can copy the expression stack of the top frame into a proper place. The problem is that this code should be implemented in assembly. So, dynamical allocation would be non-trivial and introduce performance bottle neck. A solution is to allocate a fixed buffer per thread as we never do recursive recovering and we can track the max stack in the whole JVM.

A workaround is to use very large heap that avoids GC during JPF.