russell@unturf.com
489776baa4
Adds a second asm build (asm/uncommonlisp-gc) behind the GC_NAIVE
assembler flag, providing the benchmark baseline we previously had
no data for. Same binary, same surface, different allocator:
- 8-byte header per heap block (size << 1 | mark), placed at -8
from the tagged pointer so existing untag + offset accesses
stay unchanged.
- Chunk list tracked in a side array, letting sweep walk every
mmap'd region by header-chained blocks instead of guessing.
- Free list rebuilt each sweep, first-fit alloc with split on
large-leftover (>= 24 bytes).
- Mark phase enumerates five root classes: %r14 (global env,
untagged chain), sym_else_val, sym_table entries, every
sym_hash_bucket chain, and a conservative scan from current
%rsp to the initial stack_top captured at _start. The stack
scan runs twice per word — once as a tagged value, once as a
potential untagged env-node pointer (size-guarded to 24 bytes
so it can't walk off a wrong-size block).
- Transitive marking via an explicit 16K-entry mark stack;
gc_mark_env walks untagged env chains from %r14 and from every
closure's env field.
- heap_alloc preserves the non-GC ABI (only %rax clobbered) so
existing callers like bi_append, which holds state in %rcx
across make_pair, keep working.
- Overflow path uses check-then-write bumps and pads the old
chunk's tail with a single dead block before growing, so sweep
never walks into uninitialized mmap'd memory.
- HEAP_SIZE shrinks to 1 MB under GC_NAIVE so the collector
actually runs on ordinary workloads.
- Two diagnostic builtins in the GC build: (gc-collect) to force
a collection, (gc-stats) -> (collections . live-bytes).
Control-group bench (examples/bench-gc-memory.lsp, 2000 iterations
of build-sum-discard over 200-element lists, i5-8350U):
tier time_ms peak_rss final_rss
asm no-GC 1097 133.9 MB 133.9 MB (grows, never shrinks)
asm naive GC 1431 1.1 MB 1.1 MB (steady state)
124x less memory at a ~30% throughput cost. That is the number we
were guessing at before. Reproduce: make bench-gc.
Tests: 137 asm (no-GC) + 137 asm (GC) + 189 shared functional pass.
The two asm builds are tested independently via UNCOMMONLISP_BIN in
asm/test.sh; asm/Makefile now builds both and exposes a test-gc
target.
208 lines
7.7 KiB
Makefile
208 lines
7.7 KiB
Makefile
# ═══════════════════════════════════════════════════════════════════
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# uncommonlisp — Python + C + Assembly implementations
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# ═══════════════════════════════════════════════════════════════════
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#
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# Implementations:
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# Python uncommonlisp.py bytecode VM, full continuations, portal
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# C c/uncommonlisp tree-walker + bytecode VM + x86_64 JIT
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# Assembly asm/uncommonlisp pure x86_64, no libc, 13KB binary
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#
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# Test suites:
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# make test Python unit/integration (571 tests)
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# make c-test C unit/integration + JIT (76 tests) + functional (114)
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# make asm-test Assembly unit/integration/functional (75 tests)
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# make functional-test Shared .lsp suite in Python + C (114 each)
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# make test-all Everything (836 total)
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#
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# Benchmarks (each generates reproducible numbers referenced in the
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# whitepaper; hardware-independent commands, safety envelope built in):
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# make bench Python bench.py (tree-walker vs bytecode VM)
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# make c-bench C unit-level microbenchmarks
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# make bench-3way §6.4: Python vs C vs asm on sum-to/ack
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# make bench-portal §7.5: S-exp/JSON/binary portal save+load timings
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# make bench-portal-cross §7.2: 3x3 cross-impl portal save×load matrix
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# make bench-web §11.3: HTTP benchmark vs busybox + python http.server
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# make bench-rpc-chain §11.4: Py → C relay → asm backend chain timing
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# make bench-proof §8.6: EML proof — Lean 4 vs Lumbda tiers
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# make bench-all run every bench above back to back
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# make friction head-to-head timing: Python vs C vs CPython
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#
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# Other:
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# make examples Run examples in Python + C, compare output
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# make docs Generate architecture diagrams
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# make whitepaper Build PDF whitepaper
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# make clean-all Clean everything
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all: test
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# ─── Python implementation ────────────────────────────────────────
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test:
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python3 tests.py
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test-verbose:
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python3 tests.py -v
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bench:
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python3 bench.py
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bench-verbose:
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python3 bench.py -v
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repl:
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python3 uncommonlisp.py
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lint:
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python3 -m py_compile uncommonlisp.py
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python3 -m py_compile tests.py
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python3 -m py_compile bench.py
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# ─── C implementation ─────────────────────────────────────────────
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c-build:
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$(MAKE) -C c all
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c-test: c-build
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$(MAKE) -C c test
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@echo "── C functional tests (shared .lsp suite) ──"
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./c/uncommonlisp tests/functional.lsp
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c-bench: c-build
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$(MAKE) -C c bench
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c-repl: c-build
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./c/uncommonlisp
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c-clean:
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$(MAKE) -C c clean
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# ─── Assembly implementation ──────────────────────────────────────
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asm-build:
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$(MAKE) -C asm all
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asm-test: asm-build
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$(MAKE) -C asm test
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asm-repl: asm-build
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./asm/uncommonlisp
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asm-clean:
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$(MAKE) -C asm clean
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# ─── All implementations ─────────────────────────────────────────
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functional-test: c-build
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@echo "═══ Shared functional tests (114 tests) ═══"
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@echo "── Python ──"
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@python3 uncommonlisp.py --fast tests/functional.lsp | tail -3
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@echo "── C ──"
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@./c/uncommonlisp tests/functional.lsp | tail -3
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test-all: test c-test asm-test functional-test
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@echo "════════════════════════════════════════════════════"
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@echo "All tests passed (Python + C + Assembly + functional)"
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# ─── Benchmarks (reproducible; referenced in whitepaper §6–§11) ───
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bench-3way: c-build asm-build
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@bash tests/bench-3way.sh
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bench-portal: c-build asm-build
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@bash tests/portal-benchmark.sh
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bench-portal-cross: c-build asm-build
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@bash tests/portal-cross-test.sh
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bench-web: c-build asm-build
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@bash tests/web-benchmark.sh
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bench-rpc-chain: c-build asm-build
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@bash tests/rpc-chain-bench.sh
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bench-proof: c-build asm-build
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@bash tests/bench-proof.sh
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bench-hashset: asm-build
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@bash tests/bench-hashset.sh
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bench-gc: asm-build
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@bash tests/bench-gc-memory.sh
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bench-all: bench c-bench bench-3way bench-portal bench-portal-cross bench-web bench-rpc-chain bench-proof
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@echo "═══════════════════════════════════════════════════════════"
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@echo "All benchmarks complete. Numbers in the whitepaper §6.4,"
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@echo "§7.2, §7.5, §11.3, §11.4 are reproducible from these targets."
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# ─── Examples ─────────────────────────────────────────────────────
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examples: c-build
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@echo "═══ fibonacci.lsp ═══"
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@echo "--- Python ---" && python3 uncommonlisp.py --fast examples/fibonacci.lsp
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@echo "--- C ---" && ./c/uncommonlisp examples/fibonacci.lsp
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@echo
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@echo "═══ mergesort.lsp ═══"
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@echo "--- Python ---" && python3 uncommonlisp.py --fast examples/mergesort.lsp
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@echo "--- C ---" && ./c/uncommonlisp examples/mergesort.lsp
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@echo
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@echo "═══ objects.lsp ═══"
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@echo "--- Python ---" && python3 uncommonlisp.py examples/objects.lsp
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@echo "--- C ---" && ./c/uncommonlisp examples/objects.lsp
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# ─── Friction benchmark ──────────────────────────────────────────
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friction: c-build asm-build
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bash friction.sh
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# ─── Documentation ────────────────────────────────────────────────
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DOT_FILES := $(wildcard docs/*.dot)
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DOT_PNGS := $(DOT_FILES:.dot=.png)
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docs: $(DOT_PNGS)
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docs/%.png: docs/%.dot
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dot -Tpng $< -o $@
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# ─── Whitepaper ───────────────────────────────────────────────────
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VENV := whitepaper/.venv
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RST := whitepaper/uncommonlisp-whitepaper.rst
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PDF := whitepaper/uncommonlisp-whitepaper.pdf
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STYLE := whitepaper/whitepaper.style
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$(VENV)/bin/rst2pdf:
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python3 -m venv $(VENV)
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$(VENV)/bin/pip install --upgrade pip
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$(VENV)/bin/pip install rst2pdf
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whitepaper: $(PDF)
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$(PDF): $(RST) $(STYLE) $(VENV)/bin/rst2pdf
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cd whitepaper && ../$(<D)/.venv/bin/rst2pdf \
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-s whitepaper.style \
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--fit-background-mode=scale \
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uncommonlisp-whitepaper.rst \
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-o uncommonlisp-whitepaper.pdf
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@ln -sf uncommonlisp-whitepaper.pdf whitepaper/WHITEPAPER.pdf
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@echo "Built: $(PDF)"
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# ─── Clean ────────────────────────────────────────────────────────
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clean:
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rm -rf __pycache__ *.pyc
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clean-whitepaper:
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rm -rf $(VENV) $(PDF) whitepaper/WHITEPAPER.pdf
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clean-docs:
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rm -f docs/*.png
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clean-all: clean clean-whitepaper clean-docs c-clean asm-clean
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.PHONY: all test test-verbose bench bench-verbose repl lint \
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c-build c-test c-bench c-repl c-clean \
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asm-build asm-test asm-repl asm-clean \
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test-all bench-all examples friction functional-test \
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bench-3way bench-portal bench-portal-cross bench-web bench-rpc-chain bench-proof \
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docs whitepaper clean clean-whitepaper clean-docs clean-all
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