[new release] eio_windows, eio_posix, eio_main, eio_linux and eio (0.10) #23864
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CHANGES: New features: - Add eio_posix backend (@talex5 @haesbaert ocaml-multicore/eio#448 ocaml-multicore/eio#477, reviewed by @avsm @patricoferris @polytypic). This replaces eio_luv on all platforms except Windows (which will later switch to its own backend). It is a lot faster, provides access to more modern features (such as `openat`), and can safely share OS resources between domains. - Add subprocess support (@patricoferris @talex5 ocaml-multicore/eio#461 ocaml-multicore/eio#464 ocaml-multicore/eio#472, reviewed by @haesbaert @avsm). This is the low-level API support for eio_linux and eio_posix. A high-level cross-platform API will be added in the next release. - Add `Fiber.fork_seq` (@talex5 ocaml-multicore/eio#460, reviewed by @avsm). This is a light-weight alternative to using a single-producer, single-consumer, 0-capacity stream, similar to a Python generator function. Bug fixes: - eio_linux: make it safe to share FDs across domains (@talex5 ocaml-multicore/eio#440, reviewed by @haesbaert). It was previously not safe to share file descriptors between domains because if one domain used an FD just as another was closing it, and the FD got reused, then the original operation could act on the wrong file. - eio_linux: release uring if Linux is too old (@talex5 ocaml-multicore/eio#476). Avoids a small resource leak. - eio_linux: improve error handling creating pipes and sockets (@talex5 ocaml-multicore/eio#474, spotted by @avsm). If we get an error (e.g. too many FDs) then report it to the calling fiber, instead of exiting the event loop. - eio_linux: wait for uring to finish before exiting (@talex5 ocaml-multicore/eio#470, reviewed by @avsm). If the main fiber raised an exception then it was possible to exit while a cancellation operation was still in progress. - eio_main: make `EIO_BACKEND` handling more uniform (@talex5 ocaml-multicore/eio#447). Previously this environment variable was only used on Linux. Now all platforms check it. - Tell dune about `EIO_BACKEND` (@talex5 ocaml-multicore/eio#442). If this changes, dune needs to re-run the tests. - eio_linux: add some missing close-on-execs (@talex5 ocaml-multicore/eio#441). - eio_linux: `read_exactly` fails to update file offset (@talex5 ocaml-multicore/eio#438). - Work around dune `enabled_if` bug on non-Linux systems (@polytypic ocaml-multicore/eio#475, reviewed by @talex5). - Use raw system call of `getrandom` for glibc versions before 2.25 (@zenfey ocaml-multicore/eio#482). Documentation: - Add `HACKING.md` with hints for working on Eio (@talex5 ocaml-multicore/eio#443, reviewed by @avsm @polytypic). - Improve worker pool example (@talex5 ocaml-multicore/eio#454). - Add more Conditions documentation (@talex5 ocaml-multicore/eio#436, reviewed by @haesbaert). This adds a discussion of conditions to the README and provides examples using them to handle signals. - Condition: fix the example in the docstring (@avsm ocaml-multicore/eio#468). Performance: - Add a network benchmark using an HTTP-like protocol (@talex5 ocaml-multicore/eio#478, reviewed by @avsm @patricoferris). - Add a benchmark for reading from `/dev/zero` (@talex5 ocaml-multicore/eio#439). Other changes: - Add CI for macOS (@talex5 ocaml-multicore/eio#452). - Add tests for `pread`, `pwrite` and `readdir` (@talex5 ocaml-multicore/eio#451). - eio_linux: split into multiple files (@talex5 ocaml-multicore/eio#465 ocaml-multicore/eio#466, reviewed by @avsm). - Update Dockerfile (@talex5 ocaml-multicore/eio#471). - Use dune.3.7.0 (@patricoferris ocaml-multicore/eio#457). - Mint exclusive IDs across domains (@TheLortex ocaml-multicore/eio#480, reported by @haesbaert, reviewed by @talex5). The tracing currently only works with a single domain anyway, but this will change when OCaml 5.1 is released.
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I've pushed upper bounds for the packages failing to build |
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Thanks! You may want to announce this on https://discuss.ocaml.org, where we have a Community category and an |
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Eio
CHANGES:
New features / API changes:
Add
Eio.Processfor cross-platform subprocess support (@patricoferris @talex5 #499, reviewed by @anmonteiro @avsm @haesbaert).Add
Eio_unix.Net module(@talex5 #516, reviewed by @avsm).The Unix network APIs have been cleaned up and moved here, and some missing datagram operations have been added.
sendnow takes an iovec, not just a single buffer.Add support for domain local await (@polytypic @talex5 #494 #503).
Allows sharing e.g. kcas data-structures across Eio and Domainslib domains.
Add initial eio_windows backend (@patricoferris @talex5 #497 #530 #511 #523 #509, reviewed by @avsm @polytypic).
Remove eio_luv backend (@talex5 #485).
It was only used on Windows, and has been replaced by eio_windows.
Unify
Eio_linux.FDandEio_posix.FdasEio_unix.Fd(@talex5 #491).Now that eio_luv is gone, there is no need for different backends to have different types for wrapped file descriptors.
Move
Eio.Stdenv.ttoEio_unix.Stdenv.base(@talex5 #498).Note that the rest of
Eio.Stdenvis still there; only the definition of a full Unix-like environment has moved.Deprecation cleanups (@talex5 #508).
Removed some APIs that were already marked as deprecated in Eio 0.8.
Bug fixes:
eio_linux: fall back to
forkifclone3is unavailable (@talex5 #524, reported by @smondet, reviewed by @avsm).Docker's default security policy blocks
clone3.Don't call
accept_fork's error handler on cancellation (@talex5 #520).This isn't an error and should not be reported.
Fix
eio_unix_is_blockingC stub (@patricoferris #505, reviewed by @talex5).Fix
Condition.await bugwhen cancelling (@polytypic @talex5 #487).Buf_write: fix flush returning too early (@talex5 #539, reported by @cometkim).
Ignore
ENOTCONNerrors on socket shutdown (@avsm #533, reported by @patricoferris, reviewed by @talex5).Documentation:
Link to developer meetings information (@talex5 @Sudha247 #515).
Adopt OCaml Code of Conduct (@Sudha247 #501).
Add README links to Meio and Lambda Capabilities blog post (@talex5 #496).
Document mirage
Ipaddrconversion (@RyanGibb @patricoferris @talex5 #492).Document how to use Domainslib from Eio (@talex5 #489, reviewed by @polytypic @patricoferris).
Other changes:
Run benchmarks with current-bench (@Sudha247 @talex5 #500).
Fix MDX tests on OCaml 5.1 (@talex5 #526).
Add stress test for spawning processes (@talex5 #519).
This was an attempt to track down the Race in signal.c causes programs to hang ocaml#12253 signals bug.
Eio.Process.pp_statusshould be polymorphic (@talex5 #518).eio_posix: probe for existence of some flags (@talex5 #507, reported by @hannesm).
FreeBSD 12 didn't have
O_DSYNC. Also, addO_RESOLVE_BENEATHandO_PATHif available.Fix race in ctf tests (@talex5 #493).