Files
LithosAnanake/src
Robert Allan JamesandClaude Sonnet 5 70c259dad0 Revert HEARTBEAT-TICKS@ to vm->heartbeat.tick_count; FABRIC-2.md Section R:
find and fix the real ACL-TTL measurement bug (zuse session never
authenticated, ACL enforcement never active)

Two mistakes corrected in sequence, both documented in full in
FABRIC-2.md Section R:

1. HEARTBEAT-TICKS@ was swapped to read heartbeat_ticks() -- a newer,
   kernel-only ISR hardware-timer counter (src/starkernel/heartbeat.c,
   the M5 TIME-TRUST engine) -- based on a misreading of which counter
   "the one clock" law refers to. Reverted to vm->heartbeat.tick_count,
   Loop #7 "Adaptive Heartrate", the actual year-plus-old counter the
   whole physics runtime is built on. Removed the now-irrelevant
   HEARTBEAT-PERIOD-NS@ accessor added to diagnose the wrong counter's
   adaptive re-arm period. Three-arch QEMU re-acceptance: POST 1012/0/0
   on amd64/aarch64/riscv64, HEARTBEAT-TICKS@ confirmed returning 77
   (matching the original pre-heartbeat_ticks() acceptance) on all three.

2. The real bug, found after the revert: every "ACL enabled" measurement
   in this investigation (Section P's 18-cell campaign, Section Q's
   pilot) loaded ACL.4th and ran EXEC-DOE from the bare `ok>` prompt
   without ever authenticating a zuse session. repl.c:303 keeps
   emergency_console=1 until zuse_session=1; vm_core.c:755 skips the
   entire ACL check block (TTL decrement and acl_recheck()) whenever
   emergency_console is set. ACL was configured but never armed.
   capsules/zuse.4th's pre-existing self-pin bug means the documented
   automatic zuse activation doesn't work either (still flagged, not
   fixed) -- worked around by invoking the directly-registered
   ZUSE-AUTHENTICATE word explicitly.

Validated pilot (amd64, seed 12345, 30 reps, same build, disabled vs.
genuinely zuse-authenticated-enabled): +117 ticks, +0.0448% overhead.
Disabled-arm determinism double-confirmed (261064 ticks, exact repeat
on a fresh boot) -- the 117-tick difference is real signal, not noise.
Reconciles with the original ACL-RWT campaign's own heartbeat-tick
result (+0.0054%-0.0088%, same order of magnitude). Section P's
wall-clock numbers and Section Q's "instrument blind" conclusion are
both marked invalidated/corrected in place, not deleted.

n=1 per arm, one architecture -- not yet a full campaign. Scoped as
next step, not undertaken in this pass.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
2026-08-21 11:22:56 -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
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.