Brummel
d5c565d48d
Tasks 1-5 GREEN. T1 baseline pins (re-point annotation + @ailang_rc_alloc heap-box byte-pin: size=8+n*8, tag@0, fields@8/16). T2 export gate widened (is_c_scalar -> two-level is_c_abi_type: single-ctor all-Int/Float record; multi-ctor/Str/List/nested still RED; gate suite 10/10; M1 adt-ret must-fail re-pointed to multi-ctor+Str Reading). T3 codegen forwarder widened (llvm_scalar record Type::Con -> ptr; M2 forwarder body byte-unchanged; 3/3 staticlib pins). T4/T5 E2E record round-trip own+borrow, global leak-freedom. Boss spec-consistency repair (M2.1-precedent class): orchestrator correctly BLOCKED Task 5 on a genuine spec defect -- the single-ctx-readback allocs==frees proof model is unsatisfiable for borrow (and only coincidentally passes for own) because M2's TLS-ctx is bound only during the synchronous forwarder call, so host-side decs land on g_rc_*, not ctx. Boss-verified globally leak-free + value-correct both modes. Spec + plan + harness amended to the stronger global model (sum all ailang_rc_stats: lines; the M2-TLS cross-attribution documented as correct behaviour). No fresh grounding-check (removes an over-strong measurement assumption). Tasks 6 (DESIGN.md frozen-layout SSOT + lockstep pointers + freeze wording + enforceability demo) and 7 (workspace-green gate) re-dispatched on the amended plan. Bench/architect milestone-close is audit-owned. iter embedding-abi-m3.1 (PARTIAL); INDEX.md line deferred to the DONE commit
54 lines
2.2 KiB
C
54 lines
2.2 KiB
C
/* Embedding-ABI M3 record round-trip C host (own + borrow via a
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* compile-time -DBORROW switch). Frozen value layout (DESIGN.md
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* §"Embedding ABI" > "Frozen value layout"):
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* p - 8 .. p uint64_t refcount header (set to 1 by ailang_rc_alloc)
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* p + 0 int64_t constructor tag (single ctor → 0)
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* p + 8 IEEE-754 double field 0 = Float acc
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* p + 16 int64_t field 1 = Int n
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* Total payload = 8 + 2*8 = 24.
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*
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* own : the kernel consumes each `(own (con State))` input (drop at
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* return); the host must NOT touch/dec it after the call.
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* borrow: the kernel does NOT consume the `(borrow (con State))`
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* input; the host retains it and dec's it itself each iter.
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* In both modes the return is host-owned and host-freed.
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*/
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#include <stdint.h>
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#include <assert.h>
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#include <string.h>
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#include <stdlib.h>
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typedef struct ailang_ctx ailang_ctx_t;
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extern ailang_ctx_t *ailang_ctx_new(void);
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extern void ailang_ctx_free(ailang_ctx_t *);
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extern void *ailang_rc_alloc(size_t);
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extern void ailang_rc_dec(void *);
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extern void *backtest_step(ailang_ctx_t *ctx, void *st, double sample);
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static void *make_state(double acc, int64_t n) {
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void *p = ailang_rc_alloc(8 + 2 * 8); /* header=1 set by runtime */
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*(int64_t *)((char *)p + 0) = 0; /* single-ctor tag = 0 */
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memcpy((char *)p + 8, &acc, 8); /* Float acc @ 8 */
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*(int64_t *)((char *)p + 16) = n; /* Int n @ 16 */
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return p;
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}
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int main(void) {
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ailang_ctx_t *ctx = ailang_ctx_new();
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void *st = make_state(0.0, 0);
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for (int i = 0; i < 1000000; i++) {
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void *next = backtest_step(ctx, st, (double)(i & 7));
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#ifdef BORROW
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ailang_rc_dec(st); /* borrow: host retained input, frees it */
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#endif
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/* own: kernel consumed `st`; do NOT touch/dec it here. */
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st = next; /* return is host-owned */
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}
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double acc; memcpy(&acc, (char *)st + 8, 8);
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int64_t n = *(int64_t *)((char *)st + 16);
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assert(n == 1000000);
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ailang_rc_dec(st); /* host frees the final return */
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ailang_ctx_free(ctx); /* AILANG_RC_STATS readback fires here */
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return 0;
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}
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