When Atomics.wait() is polyfilled, do not attempt to use it in _emscripten_thread_mailbox_await()#25853
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juj merged 3 commits intoemscripten-core:mainfrom Nov 26, 2025
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…ipten_thread_mailbox_await(), since the polyfill will not work there. This is take two at fixing emscripten-core#25494.
sbc100
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Nov 22, 2025
src/lib/libpthread.js
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| _emscripten_thread_mailbox_await__deps: ['$checkMailbox', '$waitAsyncPolyfilled'], | ||
| _emscripten_thread_mailbox_await: (pthread_ptr) => { | ||
| if (Atomics.waitAsync) { | ||
| if (!Atomics.waitAsyncPolyfilled) { |
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Why not just if (waitAsyncPolyfilled)? i.e. why modify the Atomics object at all?
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The idea was to make it look like a public API, if other code might need to check if the implementation was polyfilled or not. Changed to not modify the Atomics object.
sbc100
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Nov 22, 2025
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I assume there reason there is no test here is because writing a tests very hard? |
sbc100
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Nov 22, 2025
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There is an existing test that is flaky due to this - |
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…ipten_thread_mailbox_await() (emscripten-core#25853) When Atomics.wait() is polyfilled, do not attempt to use it in _emscripten_thread_mailbox_await(), since the polyfill will not work there. This is take two at fixing emscripten-core#25494.
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When Atomics.wait() is polyfilled, do not attempt to use it in _emscripten_thread_mailbox_await(), since the polyfill will not work there. This is take two at fixing #25494.