Lua Memory Snapshot

Lua C API utility to get all living objects and references in Lua.

About

• Based on Lua 5.3.5.
• The total size of all objects is exactly the same with the size returned by lua_gc.
• Changes in Lua source code:
  • Add nliveupval field in lua_State to record allocated UpVal.
  • Make static function index2addr public.
  • Add a new API lua_memory_snapshot to get snapshot.

Usage

1. Call lua_memory_snapshot and collect objects and references in callback.
2. Dump all objects or build object tree with collected data.

Example

Check example/snapshot.csv for example of dumped data.