Wasmtime GitHub notifications bot (Mar 03 2026 at 22:36): Wasmtime GitHub notifications bot (Mar 03 2026 at 22:36):alexcrichton opened PR #12711 from alexcrichton:fix-wakeups to bytecodealliance:main:
I've been running some tests with wasip3 recently and I was running into a situation where a program would read stdin, get some data, and then stdin would be closed. The second read of stdin wouldn't get a wakeup and would get stuck forever despite stdin being closed. I'm not 100% sure what was happening but I'm highly suspect of the
Notify-based synchronization here as I know historically that's a tricky primitive to work with. This applies a hammer and moves some lock scopes up a bit further to avoid dealing with trickiness and instead ensure everything proceeds in lockstep.<!--
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Wasmtime GitHub notifications bot (Mar 03 2026 at 22:36):alexcrichton requested wasmtime-wasi-reviewers for a review on PR #12711.
Wasmtime GitHub notifications bot (Mar 03 2026 at 22:36):alexcrichton requested pchickey for a review on PR #12711.
Wasmtime GitHub notifications bot (Mar 03 2026 at 22:36):alexcrichton requested wasmtime-core-reviewers for a review on PR #12711.
Wasmtime GitHub notifications bot (Mar 03 2026 at 23:49):github-actions[bot] added the label wasi on PR #12711.
Wasmtime GitHub notifications bot (Mar 09 2026 at 17:16):pchickey submitted PR review.
Wasmtime GitHub notifications bot (Mar 09 2026 at 21:25):alexcrichton updated PR #12711.
Wasmtime GitHub notifications bot (Mar 09 2026 at 21:25):alexcrichton updated PR #12711.
Wasmtime GitHub notifications bot (Mar 09 2026 at 21:26):alexcrichton has enabled auto merge for PR #12711.
Wasmtime GitHub notifications bot (Mar 09 2026 at 21:39):alexcrichton added PR #12711 Fix lost wakeups with stdin and wasip3 to the merge queue.
Wasmtime GitHub notifications bot (Mar 09 2026 at 22:03):alexcrichton merged PR #12711.
Wasmtime GitHub notifications bot (Mar 09 2026 at 22:03):alexcrichton removed PR #12711 Fix lost wakeups with stdin and wasip3 from the merge queue.
Last updated: Mar 23 2026 at 16:19 UTC