# oxilean-runtime — TODO
> Task list for the runtime system crate.
> Last updated: 2026-03-09
## ✅ Completed
**Status**: COMPLETE — ~31,676 SLOC implemented across 253 source files
### Runtime System Features
- [x] Runtime primitives
- [x] Memory management
- [x] Evaluation support
- [x] Reference counting
- [x] Garbage collection integration
- [x] Object representation
- [x] Primitive operations
### Execution Support
- [x] Value representation
- [x] Closure representation
- [x] Thunk evaluation
- [x] Lazy evaluation support
- [x] Stack management
- [x] Exception handling
### Built-in Functions
- [x] I/O primitives
- [x] String operations
- [x] Arithmetic operations
- [x] Comparison operations
- [x] Container operations
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## 🐛 Known Issues
None reported. All tests passing.
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## ✅ Completed: Runtime Profiling
- [x] Performance profiling support — `profiler.rs` (Profiler, ProfilingEvent, ProfileReport, 6 tests)
- [x] Memory profiling — `profiler.rs` (MemoryProfile, heap tracking)
- [x] Alternative GC strategies — `gc_strategies.rs` (MarkSweep, Semispace, Generational GC, 8 tests)
- [x] WASM runtime integration — `wasm_runtime.rs` (WasmModule, WasmMemory, WasmRuntime, 8 tests)