Managing State and Error Handling
Use lua_pcall for protected calls and handle errors in the C layer.
Multiple Lua States
You can run multiple lua_State instances in the same process. Each is fully independent: separate globals, separate stacks, no shared memory by default.
Thread States
lua_newthread(L) creates a child thread (coroutine) sharing the same global environment but with its own stack. This is how Lua coroutines are implemented in C.
All lessons in this course
- The Lua C API Stack Model
- Calling Lua Functions from C
- Registering C Functions in Lua
- Managing State and Error Handling