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https://github.com/logos-messaging/nim-ffi.git
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6bc626946e
The recycle/async-destroy work changed the Nim `ffiDtor` export from `int destroy(ctx)` to `int destroy(ctx, callback, userData)`, but the C++ and Rust generators still emitted the 1-arg signature. Foreign callers therefore passed only `ctx`; inside Nim, `callback`/`userData` held uninitialised register garbage. `requestRecycle` stored the garbage callback and the recycle handler later invoked it — a jump through a wild pointer that segfaulted in every C++ E2E / ASan / TSan job (the crash surfaced at teardown, after each test's assertions had already passed). Generate the 3-arg ABI and have the destructor/Drop block on the recycle callback via the existing sync-call helper, so the pool slot is fully drained and parked before the handle goes away — otherwise rapid create/destroy churn (StressShortLivedPerThreadContext, ThreadedHammer) could outrun the recycle and exhaust the pool. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
21 lines
1.2 KiB
Rust
21 lines
1.2 KiB
Rust
use std::os::raw::{c_char, c_int, c_void};
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pub type FFICallback = unsafe extern "C" fn(
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ret: c_int,
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msg: *const c_char,
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len: usize,
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user_data: *mut c_void,
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);
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#[link(name = "my_timer")]
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extern "C" {
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pub fn my_timer_create(req_cbor: *const u8, req_cbor_len: usize, callback: FFICallback, user_data: *mut c_void) -> *mut c_void;
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pub fn my_timer_echo(ctx: *mut c_void, callback: FFICallback, user_data: *mut c_void, req_cbor: *const u8, req_cbor_len: usize) -> c_int;
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pub fn my_timer_version(ctx: *mut c_void, callback: FFICallback, user_data: *mut c_void, req_cbor: *const u8, req_cbor_len: usize) -> c_int;
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pub fn my_timer_complex(ctx: *mut c_void, callback: FFICallback, user_data: *mut c_void, req_cbor: *const u8, req_cbor_len: usize) -> c_int;
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pub fn my_timer_schedule(ctx: *mut c_void, callback: FFICallback, user_data: *mut c_void, req_cbor: *const u8, req_cbor_len: usize) -> c_int;
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pub fn my_timer_destroy(ctx: *mut c_void, callback: FFICallback, user_data: *mut c_void) -> c_int;
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pub fn my_timer_add_event_listener(ctx: *mut c_void, event_name: *const c_char, callback: FFICallback, user_data: *mut c_void) -> u64;
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pub fn my_timer_remove_event_listener(ctx: *mut c_void, listener_id: u64) -> c_int;
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}
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