Replace MessagePort/BroadcastChannel registries with MessagePortPipe primitive#29937

Merged

Jarred-Sumner merged 17 commits into

mainfrom

farm/0b8cdb6f/messageport-pipe

Apr 30, 2026

Commits on Apr 29, 2026

Replace MessagePort/BroadcastChannel registries with MessagePortPipe
robobun
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test: gate concurrent MessageChannel race test behind isDebug/isASAN
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Restore Apple BSD-2 headers on WebKit-derived files; drop explicit test timeouts
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Address review: one-message-per-drain-task, listener cleanup on disentangle, fold listener flag into state atomic
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MessagePort: hold m_pipe as const Ref<> for the port's lifetime
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TransferredMessagePort: close orphaned pipe side on drop
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Keep superseded MessagePortChannel/Registry files as empty stubs; gate worker subprocess tests behind debug/ASAN
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Remove dead MessagePort forward declaration from ScriptExecutionContext.h
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Guard MessagePortPipe.cpp body behind a marker in the pipe-backed MessagePort.h
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Worker.cpp: propagate disentanglePorts exception, not serialized's
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tests: add objectTypeCounts GC check + adversarial transfer/close coverage
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MessagePortPipe: batch-loop drain like Node instead of one task per message
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MessagePortPipe: guard stale drain tasks against cross-context re-attach
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MessagePortPipe: also break drain loop on same-context re-attach
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Commits on Apr 30, 2026