Waluaigi

The PUC Lua VM, compiled to Java.

Background

Waluaigi is an experimental Lua implementation for the Java Virtual Machine (JVM). Unlike other Lua runtimes targeting the JVM, such as LuaJ or Cobalt, Waluaigi, this uses the sources of the original PUC Lua VM, ensuring an accuarate experience.

To do this, the C Lua VM is compiled to WebAssembly and then Java, using asmble.

Performance

Unfortunately, this comes at a cost. Waluaigi is about 10x slower than Cobalt and 100x time slower than PUC Lua. This testing was done using scripts/bench.lua. It's not exactly accurate or representative, but gives a rough idea.

| Runtime | Iterations | |:---------|-----------:| | PUC Lua | 5174 | | Cobalt | 570 | | Waluaigi | 50 |