docs: asyncify currData + wasm-exceptions research dossiers
Two research dossiers under docs/features: - async/: Asyncify currData contention — the clipboard crash and post-idle tool hang as one disease (single global suspension slot, three producers), asyncify internals walkthroughs, prior art, arbiter designs A/B. - wasm-exceptions/: -fexceptions vs -fwasm-exceptions — measured invoke-driven share of the asyncify tax on pcbnew (59% raw / 64% gzip; download 64.5->36 MB if migrated), KiCad dialog-in-catch audit (85 direct / 93 review of 636, catch_audit.py included), binaryen toolchain status (partial EH support since v125; TryTable unsupported), and a catch-arm-hoisting pre-pass design that would obsolete the KiCad-side refactor. Cross-linked with the parked KICAD_WASM_EH end-to-end experiment (docs/wasm-exceptions-experiment.md). Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
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Viktor Vaczi
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docs/features/wasm-exceptions/audit-results.txt
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docs/features/wasm-exceptions/audit-results.txt
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{
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"total": 636,
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"trivial": 458,
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"needs_review": 93,
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"direct_suspend": 85
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}
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== per top-level dir (direct/review/trivial/infobar):
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eeschema direct= 37 review= 17 trivial=127 infobar= 0
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pcbnew direct= 32 review= 29 trivial=128 infobar= 0
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common direct= 9 review= 35 trivial=126 infobar= 0
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cvpcb direct= 3 review= 1 trivial= 0 infobar= 0
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pcb_calculator direct= 2 review= 0 trivial= 2 infobar= 0
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kicad direct= 1 review= 1 trivial= 21 infobar= 0
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pagelayout_editor direct= 1 review= 1 trivial= 3 infobar= 0
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scripting direct= 0 review= 0 trivial= 1 infobar= 0
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plugins direct= 0 review= 1 trivial= 4 infobar= 0
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3d-viewer direct= 0 review= 2 trivial= 6 infobar= 0
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utils direct= 0 review= 4 trivial= 27 infobar= 0
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libs direct= 0 review= 2 trivial= 7 infobar= 0
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gerbview direct= 0 review= 0 trivial= 6 infobar= 0
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== top 25 unknown callees inside needs_review catches (freq):
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4 clearOutlines
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4 message
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4 wxASSERT_MSG
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4 handleException
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4 tl::unexpected
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3 wxLogFatalError
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3 GetFullFilename
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3 std::string
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3 ReportMsg
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3 line_at
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3 positions
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3 LIBRARY_PARSE_ERROR
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3 move_push
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3 wxRemoveFile
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3 IsTooRecent
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3 Contents
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3 GetFieldValue
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3 ToOrigString
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3 SetValue
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2 GetFilename
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2 ClearShapes
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2 GetFPIDAsString
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2 wxString::FromUTF8
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2 GetFormatName
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2 nan
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== direct-suspend sites (85):
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cvpcb/display_footprints_frame.cpp:310
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cvpcb/cvpcb_mainframe.cpp:977
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cvpcb/readwrite_dlgs.cpp:163
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pcb_calculator/datafile_read_write.cpp:69
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pcb_calculator/calculator_panels/panel_r_calculator.cpp:130
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kicad/kicad_manager_frame.cpp:822
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common/draw_panel_gal.cpp:325
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common/draw_panel_gal.cpp:561
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common/drawing_sheet/ds_data_model_io.cpp:100
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common/drawing_sheet/ds_data_model_io.cpp:131
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common/widgets/design_block_pane.cpp:121
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common/widgets/design_block_pane.cpp:212
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common/widgets/design_block_pane.cpp:315
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common/widgets/design_block_pane.cpp:356
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common/widgets/design_block_pane.cpp:418
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pcbnew/load_select_footprint.cpp:378
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pcbnew/pcb_base_frame.cpp:1111
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pcbnew/pcb_base_frame.cpp:1239
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pcbnew/pcb_edit_frame.cpp:2209
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pcbnew/files.cpp:670
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pcbnew/files.cpp:678
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pcbnew/files.cpp:689
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pcbnew/files.cpp:1024
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pcbnew/files.cpp:1108
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pcbnew/footprint_libraries_utils.cpp:198
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pcbnew/footprint_libraries_utils.cpp:288
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pcbnew/footprint_libraries_utils.cpp:401
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pcbnew/footprint_libraries_utils.cpp:545
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pcbnew/footprint_libraries_utils.cpp:613
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pcbnew/footprint_libraries_utils.cpp:673
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pcbnew/footprint_libraries_utils.cpp:817
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pcbnew/pcb_design_block_utils.cpp:107
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pcbnew/pcb_design_block_utils.cpp:168
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pcbnew/pcb_design_block_utils.cpp:198
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pcbnew/pcb_design_block_utils.cpp:226
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pcbnew/pcb_design_block_utils.cpp:332
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pcbnew/pcb_design_block_utils.cpp:429
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pcbnew/pcb_draw_panel_gal.cpp:781
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pcbnew/tools/board_editor_control.cpp:751
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pcbnew/tools/footprint_editor_control.cpp:529
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pcbnew/tools/pcb_control.cpp:1990
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pcbnew/netlist_reader/netlist.cpp:74
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pcbnew/exporters/export_idf.cpp:662
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pcbnew/exporters/export_idf.cpp:670
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pcbnew/dialogs/dialog_board_setup.cpp:385
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pcbnew/specctra_import_export/specctra_import.cpp:71
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pcbnew/widgets/pcb_design_block_preview_widget.cpp:191
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eeschema/project_rescue.cpp:671
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eeschema/project_rescue.cpp:819
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eeschema/sch_draw_panel.cpp:200
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eeschema/project_sch.cpp:108
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eeschema/project_sch.cpp:122
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eeschema/sch_design_block_utils.cpp:139
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eeschema/sch_design_block_utils.cpp:179
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eeschema/sch_design_block_utils.cpp:222
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eeschema/sch_design_block_utils.cpp:364
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eeschema/sch_design_block_utils.cpp:446
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eeschema/sch_design_block_utils.cpp:526
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eeschema/sch_edit_frame.cpp:1528
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eeschema/sch_base_frame.cpp:96
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eeschema/sheet.cpp:231
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eeschema/files-io.cpp:356
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eeschema/files-io.cpp:365
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eeschema/files-io.cpp:374
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eeschema/files-io.cpp:911
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eeschema/files-io.cpp:1410
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eeschema/files-io.cpp:1423
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eeschema/symbol_library_manager.cpp:376
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eeschema/symbol_library_manager.cpp:553
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eeschema/tools/sch_editor_control.cpp:569
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eeschema/tools/sch_editor_control.cpp:1703
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eeschema/dialogs/dialog_edit_symbols_libid.cpp:742
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eeschema/dialogs/dialog_sheet_properties.cpp:597
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eeschema/dialogs/dialog_sim_model.cpp:1526
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eeschema/dialogs/dialog_bom.cpp:361
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eeschema/sim/spice_simulator.cpp:44
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eeschema/sim/spice_value.cpp:415
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eeschema/sim/simulator_frame_ui.cpp:1672
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eeschema/symbol_editor/symbol_editor.cpp:170
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eeschema/symbol_editor/symbol_editor.cpp:236
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eeschema/symbol_editor/symbol_editor.cpp:1147
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eeschema/symbol_editor/symbol_editor.cpp:1187
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eeschema/symbol_editor/symbol_editor_import_export.cpp:104
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eeschema/symbol_editor/symbol_editor_import_export.cpp:110
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pagelayout_editor/tools/pl_edit_tool.cpp:531
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