feat(fileio): port async pools to Rust

Replace programs/fileio_asyncio.c with a declaration-only shim and register
Rust's async file-I/O implementation in the library archive. Preserve the C
ABI for pool and job contexts, including DEBUGLEVEL pointer-based pthread
wrappers, and select separate Rust build configurations for those layouts.
Keep ordered-read queue state locked while waiting, drain queued work before
shutdown frees job buffers, and use platform large-file seeks for sparse writes.

Test Plan:
- `cargo test --no-default-features --lib fileio_asyncio` (7 passed).
- `cargo test --no-default-features --features debug-pthread --lib fileio_asyncio` (7 passed).
- `cargo check --all-targets`, clippy library/benches/tests, and nightly fmt check (passed).
- Threaded program build and README round-trip (passed).
- `make -C tests poolTests` and `./tests/poolTests` (passed).
- Current C shim object defines no `AIO_*` symbols; the Rust archive exports all 20 declarations.
- Full standalone all-target Rust tests and the default CLI archive rebuild remain affected by unrelated C/Rust integration and another worker's in-progress benchmark changes.

This commit is contained in:

ddidderr

2026-07-18 01:43:25 +02:00

parent a15bf1d375

commit b6611f9f90

5 changed files with 1773 additions and 656 deletions

									
										rust/src/lib.rs
									
		+1
		
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				@@ -15,6 +15,7 @@ pub mod dict_builder_zdict;

				pub mod divsufsort;

				pub mod entropy_common;

				pub mod errors;

				pub mod fileio_asyncio;

				#[cfg(feature = "compression")]

				pub mod fse_compress;

				pub mod fse_decompress;