pcbjam/docs
Repository files (latest commit first)
Filename Latest commit message Latest commit date
Gergő Törcsvári 210b079ed9
fix(asyncify): ownership-scoped root deferral — the recorded nested self-rewind, cured
The v0.1.23 flight recorder caught the kill live (console-export-2026-8-1_19-16-8):
dozens of benign fiber round-trips at w=0, the yield cycling healthily on its
buffer — then "fcs … ROOT w=1" and the trap, state frozen at Rewinding with
currData=root+20. The fatal condition, observed rather than inferred: a fiber
round-trip inside the ROOT's OWN sleep-wake continuation re-suspends and
re-rewinds the root nested inside its live wake rewind. Consume-once passed
correctly — it guards a different corruption and stays.

The round-3 deferral was aimed right but unscoped (taxed fiber-owned wakes,
flaked S4). Final form: every fresh sleep is tagged root- or fiber-owned
(fiber ⇔ started inside a finishContextSwitch fiber slice or a fiber-owned
wake; root entries don't count as slices); finishContextSwitch(root) defers
one macrotask ONLY while a root-owned wake is live (Asyncify.__wakingRoot).
Beacon: root-entry-deferred. Verified inert where it must be: zero beacons
across all 13 drift-trio-scenarios logs (26/26 + 25/26-then-26/26 stress —
the single miss carried no beacons, i.e. the pre-existing under-load flake).

Also: resume re-entries no longer push sleep contexts (the v0.1.23 dump
carried ~380 leaked zero-linked entries), and wake events in the recorder are
tagged R/f for ownership.

.ci-cache-epoch 5→6.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_019SE4o46Lnq3hF574FFq8x4
2026-08-01 19:49:38 +02:00
..
debugging docs: ✏️ cleanup and organize docs 2026-06-05 12:16:13 +02:00
features fix(asyncify): ownership-scoped root deferral — the recorded nested self-rewind, cured 2026-08-01 19:49:38 +02:00
research docs: ✏️ cleanup and organize docs 2026-06-05 12:16:13 +02:00
build.md refactor: collapse dual-mode plumbing — the DOM port is the only WASM build 2026-06-12 20:19:48 +02:00
ci-build-slowness-findings.md docs: CI build perf findings + parked wasm-exceptions experiment 2026-06-11 07:50:57 +02:00
README.md docs: ✏️ cleanup and organize docs 2026-06-05 12:16:13 +02:00
wasm-exceptions-experiment.md feat(wasm-eh): migrate the WASM build to native wasm exceptions (+ 3D viewer default-on) 2026-06-30 09:40:26 +02:00

Documentation Map

A central index of the documentation in this repo. The goal of the project is to build KiCad with WASM and run it in a browser.

Note: per-area README.md files stay next to the code they describe (they're linked below). Cross-cutting guides live under docs/. Per-feature design notes live under features/.

Start here

  • Project README — overview, prerequisites, quick start, project structure
  • CLAUDE.md — project/agent context and contribution conventions

Build

  • docs/build.md — Docker-based KiCad WASM build system (two-phase build, outputs, memory)
  • docker/README.md — Docker build environment, branch-specific containers, troubleshooting
  • wasm/README.md — WASM compatibility layer (overrides/shims without patching KiCad)

Debugging & Asyncify

Architecture

  • wasm/README.md — WASM compatibility layer structure
  • web/README.md — web app (create/open KiCad projects), tech stack, URL routing, WASM artifact serving

Testing

Feature design docs

Per-feature design notes and porting records live under features/:

Archived / historical

features/archive/ holds docs whose work is done or superseded (each carries a status banner):

  • webgl — WebGL-GAL strategy/plan (since implemented in kicad/common/gal/webgl/)
  • ipc-api — IPC-API guard cleanup TODO (revert not yet actioned)