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nim-ffi/examples/timer/cpp_bindings
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Ivan FB 0e176bd5eb
fix(ffi): set up foreign-thread GC in entry procs; recycle/event cleanup 
- Call initializeLibrary() (setupForeignThreadGc) in the `.ffi.` request
  wrapper and in add/remove_event_listener so a foreign (Go) caller thread
  has an initialised Nim heap before any allocation ($reqTypeName /
  $eventName / registry ops). Without it such a thread segfaults in the
  allocator under GC pressure — the production unwrap SIGSEGV.
- recycleContext resets the event registry/queue + stuck flag on park so a
  reused pool slot starts clean.
- ffiDtor doc/cleanup for the async recycle ABI.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
2026-06-12 11:28:48 +02:00
..
CMakeLists.txt
fix(ffi): set up foreign-thread GC in entry procs; recycle/event cleanup
2026-06-12 11:28:48 +02:00
main.cpp
Remove wildcard event listener; keep per-event dispatch (#70)
2026-06-02 22:22:35 +02:00
my_timer.hpp
Remove wildcard event listener; keep per-event dispatch (#70)
2026-06-02 22:22:35 +02:00
README.md
Add basic cpp e2e tests (#27)
2026-05-19 12:43:34 +02:00

README.md

C++ Bindings for nim-timer

Purpose

This folder contains auto-generated C++ bindings for the my_timer Nim library. It is generated from ../timer.nim and provides:

  • my_timer.hpp: High-level C++ class (MyTimerCtx) wrapping the FFI interface
  • main.cpp: Example executable demonstrating how to use the bindings
  • CMakeLists.txt: Build configuration that compiles the Nim library and links the C++ example

How It's Generated

Generate or regenerate these bindings by running from the parent directory:

cd examples/timer
nimble genbindings_cpp

This command:

  1. Invokes the Nim compiler with -d:targetLang:cpp flag
  2. Triggers genBindings("examples/timer/cpp_bindings", "../timer.nim") in timer.nim
  3. Creates/updates the generated binding files

Building the Example

cd examples/timer/cpp_bindings
cmake -S . -B build
cmake --build build
./build/example

Do Not Edit

The generated files in this folder are overwritten each time nimble genbindings_cpp runs. Any manual changes will be lost.