Wasmtime GitHub notifications bot (Feb 06 2024 at 23:27): Wasmtime GitHub notifications bot (Feb 06 2024 at 23:27):pchickey opened PR #7881 from bytecodealliance:pch/wasi-common-self-contained to bytecodealliance:main:
The goal of this PR is to set the stage for wasmtime-wasi::preview2 to be promoted to the root of the wasmtime-wasi crate. This PR is settling up on a bunch of tech debt, and is intended to be backported to the
release-18.0.0branch. Once landed and backported, a follow-up PR will finish this work to be released as part of the19.0release.Now that Preview 2 is out, and wasmtime-wasi::preview2::preview1 is providing wasmtime-cli's default implementation of Preview 1 for a few releases, wasi-common only needs to exist to keep the (zombie, given the proposal status) wasmtime-wasi-threads implementation working. Since most embedders don't care about that, we want to push wasi-common out of the wasmtime-wasi crate.
Historically,
wasi-commonwas "independent" ofwasmtimeandwasmtime-wasiprovided the integration. This hasn't actually been the case for a while, but nowwasi-commonuses a cargo featurewasmtimeto determine whether to take a dependency on wasmtime. In addition, another historical accident ofwasi-commonwas that it defined theWasiFile,WasiDir,WasiSchedand etc traits, but didn't actually provide impls of those traits - those were provided bywasi-cap-std-syncandwasi-tokio. (That architectural wart was mostly because I didn't understand cargo features and optional dependencies when I developed it.) To gloss over that whole mess,wasmtime-wasiprovided a conveniently integrated with wasmtime export ofwasi-commonhooked towasi-cap-std-sync's impls at its root (as well as underwasmtime_wasi::sync) and thewasi-commonhooked towasi-tokiounderwasmtime_wasi::tokio.This PR plows the whole legacy mess over into
wasi-common, and leaveswasmtime_wasi's exports of -common under#[deprecated(since = "18.0.0", note = "... permanent deletion in 19.0"]markers. These deprecations will be released for wasmtime 18 and then go away completely in wasmtime 19.The
wasi-cap-std-syncandwasi-tokiocrates have now been totally inlined atwasi_common::syncandwasi_common::tokio, behind features, as they always could have been. Wasmtime integration for those impls are defined in those mods as well, rather than inwasmtime-wasi.The
wasi-common::maybe_exit_on_errorfunc exists so that the cli and (recoils in horror) wasi-threads can terminate the entire process in the case of a trap, which is a pretty terrible idea in general. Besides providing the deprecated implementation, this PR moves the logic for thepreview2::I32Exithandling to an associated function that extracts an exit code in thewasmtime-wasi::preview2::errormodule, and all calls tostd::process::exitto thewasmtime-clicrate, since that is such an extraordinarily dangerous function. Additionally I switched to using a rustix export for the sigabort exit code, rather than libc, to eliminate an unnecessary dep.The follow-up PR will delete the deprecations (the entire contents of the root except for
pub mod preview2), move the entirewasmtime_wasi::preview2mod up to the root, and shift all of the tests and examples throughout this repository to use wasmtime_wasi instead of wasi_common.<!--
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Wasmtime GitHub notifications bot (Feb 06 2024 at 23:27):pchickey requested fitzgen for a review on PR #7881.
Wasmtime GitHub notifications bot (Feb 06 2024 at 23:27):pchickey requested wasmtime-default-reviewers for a review on PR #7881.
Wasmtime GitHub notifications bot (Feb 06 2024 at 23:27):pchickey requested wasmtime-core-reviewers for a review on PR #7881.
Wasmtime GitHub notifications bot (Feb 06 2024 at 23:27):pchickey requested sunfishcode for a review on PR #7881.
Wasmtime GitHub notifications bot (Feb 06 2024 at 23:27):pchickey requested alexcrichton for a review on PR #7881.
Wasmtime GitHub notifications bot (Feb 07 2024 at 01:03):github-actions[bot] commented on PR #7881:
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Wasmtime GitHub notifications bot (Feb 09 2024 at 00:22):sunfishcode submitted PR review:
This looks great! Much simpler.
Could you add a high-level summary to the top of wasi-common's top-level doc comment in src/lib.rs that mentions it contains the WASI 0.1 implementation?
Wasmtime GitHub notifications bot (Feb 09 2024 at 00:34):pchickey updated PR #7881.
Wasmtime GitHub notifications bot (Feb 09 2024 at 00:34):pchickey commented on PR #7881:
Good reminder - done!
Wasmtime GitHub notifications bot (Feb 09 2024 at 00:34):pchickey has enabled auto merge for PR #7881.
Wasmtime GitHub notifications bot (Feb 09 2024 at 00:42):pchickey updated PR #7881.
Wasmtime GitHub notifications bot (Feb 09 2024 at 00:48):pchickey updated PR #7881.
Wasmtime GitHub notifications bot (Feb 09 2024 at 11:55):alexcrichton submitted PR review:
:broom: :broom: :broom:
Wasmtime GitHub notifications bot (Feb 09 2024 at 11:55):alexcrichton submitted PR review:
:broom: :broom: :broom:
Wasmtime GitHub notifications bot (Feb 09 2024 at 11:55):alexcrichton created PR review comment:
Can you add docs here indicating what the return value means?
Wasmtime GitHub notifications bot (Feb 09 2024 at 18:18):pchickey updated PR #7881.
Wasmtime GitHub notifications bot (Feb 09 2024 at 18:30):pchickey updated PR #7881.
Wasmtime GitHub notifications bot (Feb 09 2024 at 18:31):pchickey submitted PR review.
Wasmtime GitHub notifications bot (Feb 09 2024 at 18:31):pchickey created PR review comment:
Good catch. As I went to write docs I decided that downcasting and determining the exit code shouldnt be collapsed into a single associated function, and changed this to a
(&self) -> i32that has a more straightforward doc, and inlined the downcasting at its 2 use sites.
Wasmtime GitHub notifications bot (Feb 09 2024 at 23:25):pchickey updated PR #7881.
Wasmtime GitHub notifications bot (Feb 10 2024 at 00:40):pchickey updated PR #7881.
Wasmtime GitHub notifications bot (Feb 10 2024 at 00:42):pchickey updated PR #7881.
Wasmtime GitHub notifications bot (Feb 10 2024 at 00:48):pchickey updated PR #7881.
Wasmtime GitHub notifications bot (Feb 12 2024 at 18:46):pchickey updated PR #7881.
Wasmtime GitHub notifications bot (Feb 12 2024 at 18:48):pchickey updated PR #7881.
Wasmtime GitHub notifications bot (Feb 12 2024 at 19:21):pchickey updated PR #7881.
Wasmtime GitHub notifications bot (Feb 12 2024 at 19:46):pchickey updated PR #7881.
Wasmtime GitHub notifications bot (Feb 13 2024 at 17:20):pchickey updated PR #7881.
Wasmtime GitHub notifications bot (Feb 13 2024 at 17:20):pchickey has enabled auto merge for PR #7881.
Wasmtime GitHub notifications bot (Feb 13 2024 at 18:32):pchickey merged PR #7881.
Last updated: Dec 13 2025 at 21:03 UTC