Robert Allan JamesandClaude Opus 5.5
5bc7b4dee7
- New spinlock primitive (spinlock.h/.c): CAS on an owner word (core+1), interrupts masked while any lock is held (state kept in the per-core block, so release order doesn't matter). Recursion, release-not-held, held-at-switch and destroyed-while-held are counted and logged, never silent. Locks are no-ops until the boot core's block is installed (riscv64's monolithic early boot prints before sk_percpu_boot_init()). - Kernel locks in a documented order: hermes, switch, registry, doe, log, console, heap, vmm, pmm. sf_mutex (dict_lock/tuning_lock) uses the same lock word. - Hermes: public functions over *_locked internals; never held across the drain's vm_interpret_kind(); switch notifications after dropping the lock; event payload moved off static storage. Switch table and registry never call out while held (slot/entry copied under the lock). - No lock crosses a switch: checked at context switch (leave, resume) and the idle point. - Probe (removed): every lock balances on all three ISAs; 0 held at switch over 7.5M-51M checks; 0 recursions, 0 bad releases. - Standard sequence on amd64/aarch64/riscv64: hashes and G byte-identical to MC-0a, MINT/WIREBIND/USE ok, conservation true, 0 idle growth. - Block subsystem split out as MC-0b2 (Captain Bob's ruling). Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
include/
Public headers for the hosted StarForth VM (src/). Kernel-only headers
live under include/starkernel/.
Core VM
vm.h— theVMstruct and all core types (DictEntry,DictPhysics, stacks, dictionary state); the central header most other files include.vm_api.h— external VM API surface.vm_host.h,vm_debug.h,startup.h,version.h— host integration, debug utilities, startup sequencing, version string.cli.h,repl.h,io.h,log.h— CLI parsing, REPL loop, I/O, logging.word_registry.h— word registration system shared by everysrc/word_source/*.cfile.compudynamics.h— the generic compudynamics module: tuning-word/config lookups (cd_tuning_word(),cd_tuning_vm()) consumed byssm_jacquard.c.
Memory / blocks
memory_management.h,dictionary_management.h— dictionary allocator and search.block_subsystem.h,blkcfg.h,blkio.h,blkio_factory.h— logical→ physical block mapper and pluggable block I/O backends (file/RAM).platform_alloc.h,platform_lock.h,platform_time.h— platform abstraction shims (hosted vs. kernel allocation/locking/timing).
Physics-driven adaptive runtime (7 feedback loops)
physics_runtime.h— main physics coordinator.physics_hotwords_cache.h— Loop #1, execution-heat hot-words cache.physics_metadata.h— per-wordDictPhysicsmetadata tracking.physics_pipelining_metrics.h— Loop #4, word-transition prediction.physics_execution_hooks.h— execution instrumentation hook points.rolling_window_of_truth.h,rolling_window_knobs.h— Loop #2 circular execution-history buffer and its tuning knobs.inference_engine.h— Loops #5/#6, window-width and decay-slope statistical inference.dictionary_heat_optimization.h— Loop #1 heat counters.ssm_jacquard.h— L8 Jacquard steady-state mode selector.doe_metrics.h— Design of Experiments (2^7 factorial) metrics.profiler.h— performance profiling hooks.
Arithmetic / codegen
q48_16.h— Q48.16 deterministic fixed-point arithmetic (used instead of IEEE-754 float specifically to keep cross-architecture behavior bit-identical).math_portable.h— portable math helpers.arch_detect.h,starforth_config.h— architecture detection and the build-flag fallback-default layer (used when a.cfile is compiled by hand withoutmake).vm_asm_opt.h,vm_asm_opt_arm64.h,vm_asm_opt_riscv64.h,vm_inner_interp_asm.h,vm_inner_interp_arm64.h,vm_inner_interp_riscv64.h— per-architecture assembler-optimized inner interpreter (USE_ASM_OPT=1).
See include/starkernel/README.md for the bare-metal kernel headers.