MattJackson
aa12bdad62
Generalizes 0.20.5's hand-written wait_after_with_timeout into a
reusable primitive. After this change, every blocking syscall in the
recovery + mux paths is wrapped, so cooperative Halt has bounded
~250 ms latency reach even into kernel-owned thread states.
New module src/io/bounded.rs:
- BoundedError { Halted, Timeout, WorkerLost }
- bounded_syscall<F, R>(halt: Option<&Halt>, timeout, op) -> Result<R, BoundedError>
- Worker thread runs op; main thread recv_timeouts on a rendezvous
channel in 250 ms slices, polling halt between slices.
- Worker is intentionally leaked on timeout/halt — kernel reaps when
the syscall finally returns or at process exit. Calling thread is
NEVER trapped inside a kernel call.
- 6 unit tests cover the happy path + each error variant.
Refactored callsites:
- src/io/writeback/linux.rs::wait_after_with_timeout now delegates
to bounded_syscall. ~30 LOC of duplicated channel/thread plumbing
deleted. Same semantics, cleaner.
- src/io/writeback_file.rs::WritebackFile::sync_all now wraps the
final libc::fsync(fd) with bounded_syscall (60 s deadline). On
timeout: log error at target=mux and return Ok — kernel will flush
on close, best-effort but bounded. Covers FileSectorSink::finish,
PatchSink::close, SweepSink::close, and the mux MKV finalize path
(they all sync through WritebackFile).
What still hangs (deliberately not wrapped — too hot a path):
- File::write itself. Per-frame write on a wedged NFS could still
block; but back-pressure from a stuck consumer means the producer
notices within seconds, not minutes — different failure mode than
the WAIT_AFTER hang 0.20.5/0.20.6 fix.
45 lines
1.1 KiB
TOML
45 lines
1.1 KiB
TOML
[package]
|
|
name = "libfreemkv"
|
|
version = "0.20.6"
|
|
edition = "2024"
|
|
rust-version = "1.86"
|
|
license = "AGPL-3.0-only"
|
|
description = "Open source raw disc access library for optical drives"
|
|
repository = "https://github.com/freemkv/libfreemkv"
|
|
keywords = ["bluray", "uhd", "optical", "scsi", "disc"]
|
|
categories = ["hardware-support", "multimedia"]
|
|
|
|
[dependencies]
|
|
serde = { version = "1", features = ["derive"] }
|
|
serde_json = "1"
|
|
sha1 = "0.10"
|
|
sha2 = "0.10"
|
|
aes = "0.8"
|
|
cbc = "0.1"
|
|
flate2 = "1"
|
|
num-bigint = "0.4"
|
|
num-traits = "0.2"
|
|
num-integer = "0.1"
|
|
rand = "0.8"
|
|
cmac = "0.7"
|
|
zip = { version = "2", default-features = false, features = ["deflate"] }
|
|
base64 = "0.22.1"
|
|
# Trace-level instrumentation for Disc::copy + SgIoTransport::execute. Permitted
|
|
# under project docs ("Acceptable strings: debug/trace logging"). Consumers (autorip)
|
|
# wire a tracing subscriber and pipe events into the JSONL debug log.
|
|
tracing = "0.1"
|
|
|
|
[target.'cfg(target_os = "linux")'.dependencies]
|
|
libc = "0.2"
|
|
|
|
[target.'cfg(target_os = "macos")'.dependencies]
|
|
libc = "0.2"
|
|
|
|
[dev-dependencies]
|
|
tempfile = "3"
|
|
|
|
[[bench]]
|
|
name = "sgio_read"
|
|
harness = false
|
|
|