Files
LithosAnanke/src
Robert Allan JamesandClaude Sonnet 5 4018fe8b04 FABRIC-3.md §I.2: FIRSTTOUCH + migration state machine (blk_meta_relocate_devblock)
Closes the block-subsystem punch-list item -- built exactly to §F.11's
already-decided algorithm after re-verifying it against current
blk_meta_t (a 2026-09-03 re-scoping note had wrongly claimed the chain
fields no longer existed; they do, untouched by BMAPFMT).

blk_firsttouch_claim(): one linear scan of Artemis's own device
(new blk_get_first_disk_range(), correctly bounding the scan instead of
the global multi-device LBN space), scattered-chain claim via
prev_block/next_block/chain_length, owner_fp stamped on every member
devblock, fails outright with no partial claim.

blk_meta_relocate_devblock(): the real migration primitive -- bridges
the existing FORTH-block-granularity blk_subsys_relocate_block() up to
devblock granularity (BLK_PACK_RATIO=3, corrected mid-design), running
it 3x and transferring blk_meta_t ownership fields. The "migration
state machine" turned out to be just the 2 states BLK_FLAG_MIGRATING
already reserved; the real design work was the trigger. Two were
scoped in conversation (overflow onto Artemis; heat-based wear
leveling); heat/wear-leveling is built and wired into sk_repl_idle()
via blk_meta_t.write_count. Overflow is deliberately left open,
precisely scoped (needs a slot-lookup-by-device-pointer call site
threaded from WIREBIND) rather than guessed at.

Also flagged, not fixed: BMAPFMT's owner_fp/CLAIMED and the pre-existing
BAM allocator are two parallel, unreconciled accounting systems --
FIRSTTOUCH/relocate only touch the former.

Verified 3-arch boot to ok> (amd64/aarch64/riscv64, each in the
foreground); logs and DoE CSVs from this session's verification runs
included per this repo's own audit-artifact convention.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_019YcT3H2PQeyujrzjqS3Var
2026-09-04 10:33:47 -04:00
..
2026-08-01 07:49:56 -04:00
2026-08-01 07:49:56 -04:00
2026-08-01 07:49:56 -04:00
2026-08-01 07:49:56 -04:00

src/

Hosted StarForth VM implementation (compiled by the root Makefile). Bare-metal kernel sources live in src/starkernel/; FORTH word implementations in src/word_source/; the test harness in src/test_runner/; platform shims in src/platform/.

Entry point / interpreter core

  • main.c — CLI entry point, VM init, DoE mode dispatch.
  • vm.c — interpreter loop, stacks, dictionary state (the central runtime file).
  • vm_api.c — external VM API implementation.
  • vm_bootstrap.c — VM bootstrap initialization.
  • vm_debug.c — debugging utilities.
  • vm_time.c — time-related VM operations.
  • vm_internal.h — internal-only declarations shared across the vm_*.c files, not part of the public include/vm_api.h surface.
  • repl.c — REPL read-eval-print loop.
  • cli.c — CLI argument parsing.
  • io.c — I/O operations.
  • log.c — logging infrastructure.

Memory / dictionary / blocks

  • memory_management.c — dictionary allocator.
  • dictionary_management.c — dictionary allocation and search.
  • dictionary_heat_optimization.c — Loop #1 execution-heat tracking.
  • word_registry.c — word registration system.
  • block_subsystem.c — logical→physical block mapper.
  • blkio_file.c, blkio_ram.c, blkio_factory.c — block I/O backends (file-backed, RAM-backed) and the factory that selects between them.
  • stack_management.c — stack operations.

Physics-driven adaptive runtime (7 feedback loops)

  • physics_runtime.c — main physics coordinator.
  • physics_hotwords_cache.c — Loop #1 hot-words caching.
  • physics_metadata.c — per-word metadata tracking.
  • physics_pipelining_metrics.c — Loop #4 word-transition prediction.
  • physics_execution_hooks.c — execution instrumentation.
  • rolling_window_of_truth.c — Loop #2 circular execution-history buffer.
  • inference_engine.c — Loops #5/#6, statistical inference (window-width, decay-slope).
  • ssm_jacquard.c — L8 Jacquard steady-state mode selector; consumes compudynamics.c for tuning-word/config lookups.
  • compudynamics.c — generic compudynamics module (cd_tuning_word(), cd_tuning_vm()); the score/UCB/reward/weight constants for the L8 adaptive table live here, not in ssm_jacquard.c.
  • heartbeat_export.c — heartbeat metrics export (CSV export function itself not yet implemented — see docs/working/architecture/heartbeat_csv_export.md).

Math / measurement

  • math_portable.c — portable math functions.
  • profiler.c — performance profiling.
  • doe_metrics.c — Design of Experiments metrics (2^7 factorial).

Any .bak file alongside a .c file here (doe_metrics.c.bak, inference_engine.c.bak, vm.c.bak) is a pre-edit backup left by a past maintenance script (see scripts/remove_loop_conditionals.sh), not a build input.