agra
da1063f1bb
mem: allocator init returns state by value (drops state-struct heap alloc)
...
Building on the Option 3 lvalue-borrow rule, the long-lived allocators
in `library/modules/allocators.sx` (GPA, Arena, TrackingAllocator) now
return their state by value instead of via a heap-allocated `*T`. The
caller binds the result to a local; the local IS the allocator state.
`xx local` borrows that storage under Option 3, so the `Allocator`
protocol value's `ctx` points at the local — no heap allocation for
the state struct, no `free` of the state needed.
```sx
gpa := GPA.init(); // GPA (value)
arena := Arena.init(xx gpa, 4096); // Arena (value)
tracker := TrackingAllocator.init(xx gpa); // TrackingAllocator (value)
push Context.{ allocator = xx tracker, data = null } { ... }
```
Why by-value:
- One fewer `libc_malloc` per allocator instance.
- No state-struct leak. The local is reclaimed at scope exit; `deinit`
only handles downstream resources (chunks, etc.) — not its own struct.
- Owning structs can embed allocators as value fields directly.
Callsite changes:
- `library/modules/ui/pipeline.sx`: `arena_a: Arena;` / `arena_b:
Arena;` (was `*Arena;`). The `build_arena: *Arena` local takes
`@self.arena_a` / `@self.arena_b`.
- `examples/126-xx-recover-then-dispatch.sx`: `recovered == @gpa`
instead of `recovered == gpa` (gpa is a value now).
- `examples/135-xx-lvalue-borrows.sx`: drop the `tracker_ptr.*`
deref — `init` already returns the value.
- `examples/50-smoke.sx`: Arena alloc counts dropped by 1 (no
state-struct allocation). Comments + snapshot updated.
`Arena.deinit` drops the trailing `parent.dealloc(xx a)` — the
caller's local owns the storage.
FFI IR snapshots regenerated to reflect the new signatures:
`@GPA.init` returns `i64` (was `ptr`); `@Arena.init` and
`@TrackingAllocator.init` use sret returns (was `ptr`).
CLAUDE.md "Allocator construction" rule rewritten around the
by-value convention. The forbidden caller-provides-storage and
redundant-pointer-rename patterns are still forbidden but for the
right reasons now (verbose, fragile) rather than as a workaround
for the old `init() -> *T` shape.
157/157 example tests pass; chess clean on macOS, iOS sim, and
Android via `tools/verify-step.sh`.
2026-05-25 15:33:28 +03:00
..
2026-02-15 12:02:36 +02:00
2026-02-15 12:02:36 +02:00
2026-02-15 12:02:36 +02:00
2026-02-15 12:02:36 +02:00
2026-02-15 12:02:36 +02:00
2026-02-15 19:44:20 +02:00
2026-02-15 12:02:36 +02:00
2026-02-15 12:02:36 +02:00
2026-02-15 12:02:36 +02:00
2026-02-15 12:02:36 +02:00
2026-02-15 12:02:36 +02:00
2026-02-15 12:02:36 +02:00
2026-02-15 12:02:36 +02:00
2026-02-15 12:02:36 +02:00
2026-05-17 13:19:08 +03:00
2026-05-25 09:10:04 +03:00
2026-02-15 12:02:36 +02:00
2026-02-15 12:02:36 +02:00
2026-02-15 12:02:36 +02:00
2026-05-24 22:59:20 +03:00
2026-02-15 12:02:36 +02:00
2026-02-15 12:02:36 +02:00
2026-02-15 12:02:36 +02:00
2026-02-15 12:02:36 +02:00
2026-02-15 12:02:36 +02:00
2026-02-15 12:02:36 +02:00
2026-02-15 12:02:36 +02:00
2026-02-20 18:22:42 +02:00
2026-02-15 12:02:36 +02:00
2026-02-15 12:02:36 +02:00
2026-02-15 12:02:36 +02:00
2026-02-15 19:44:20 +02:00
2026-02-15 12:02:36 +02:00
2026-02-15 12:02:36 +02:00
2026-02-15 12:02:36 +02:00
2026-02-15 12:02:36 +02:00
2026-02-15 12:02:36 +02:00
2026-02-15 12:02:36 +02:00
2026-02-15 12:02:36 +02:00
2026-02-15 12:02:36 +02:00
2026-02-15 12:02:36 +02:00
2026-02-15 12:02:36 +02:00
2026-02-15 12:02:36 +02:00
2026-02-15 12:02:36 +02:00
2026-02-15 12:02:36 +02:00
2026-02-15 12:02:36 +02:00
2026-02-15 12:02:36 +02:00
2026-02-15 12:02:36 +02:00
2026-02-15 12:02:36 +02:00
2026-02-15 12:02:36 +02:00
2026-02-15 12:02:36 +02:00
2026-02-15 12:02:36 +02:00
2026-02-15 12:02:36 +02:00
2026-02-15 12:02:36 +02:00
2026-02-15 12:02:36 +02:00
2026-02-15 12:02:36 +02:00
2026-02-15 12:02:36 +02:00
2026-02-15 12:02:36 +02:00
2026-02-22 22:16:30 +02:00
2026-02-22 22:16:30 +02:00
2026-02-22 17:24:04 +02:00
2026-02-22 17:24:04 +02:00
2026-02-22 17:24:04 +02:00
2026-02-22 17:24:04 +02:00
2026-02-22 17:24:04 +02:00
2026-02-28 18:03:38 +02:00
2026-02-23 13:45:44 +02:00
2026-02-23 13:45:44 +02:00
2026-02-25 15:51:22 +02:00
2026-02-25 15:51:22 +02:00
2026-03-02 21:00:55 +02:00
2026-03-02 21:00:55 +02:00
2026-02-15 19:44:20 +02:00
2026-05-25 15:33:28 +03:00
2026-03-05 16:20:36 +02:00
2026-03-05 16:20:36 +02:00
2026-05-17 13:19:08 +03:00
2026-05-17 13:19:08 +03:00
2026-05-17 13:19:08 +03:00
2026-05-17 13:19:08 +03:00
2026-05-17 13:19:08 +03:00
2026-05-17 13:19:08 +03:00
2026-05-17 13:19:08 +03:00
2026-05-17 13:19:08 +03:00
2026-05-17 13:19:08 +03:00
2026-05-17 13:19:08 +03:00
2026-05-17 13:19:08 +03:00
2026-05-17 13:19:08 +03:00
2026-05-17 13:19:08 +03:00
2026-05-17 13:19:08 +03:00
2026-05-17 13:19:08 +03:00
2026-05-17 13:19:08 +03:00
2026-05-17 13:19:08 +03:00
2026-05-17 13:19:08 +03:00
2026-05-17 13:19:08 +03:00
2026-05-17 13:19:08 +03:00
2026-05-17 13:19:08 +03:00
2026-05-17 13:19:08 +03:00
2026-05-17 13:19:08 +03:00
2026-05-17 13:19:08 +03:00
2026-05-17 19:36:37 +03:00
2026-05-17 19:36:37 +03:00
2026-05-17 19:36:37 +03:00
2026-05-17 19:36:37 +03:00
2026-05-17 19:36:37 +03:00
2026-05-17 19:36:37 +03:00
2026-05-17 19:36:37 +03:00
2026-05-17 19:36:37 +03:00
2026-05-17 19:36:37 +03:00
2026-05-17 19:36:37 +03:00
2026-05-17 19:36:37 +03:00
2026-05-17 19:36:37 +03:00
2026-05-17 19:36:37 +03:00
2026-05-17 19:36:37 +03:00
2026-05-17 19:36:37 +03:00
2026-05-17 19:36:37 +03:00
2026-05-17 19:36:37 +03:00
2026-05-17 19:36:37 +03:00
2026-05-17 19:36:37 +03:00
2026-05-17 19:36:37 +03:00
2026-05-17 19:36:37 +03:00
2026-05-17 19:36:37 +03:00
2026-05-17 19:36:37 +03:00
2026-05-17 19:36:37 +03:00
2026-05-17 19:36:37 +03:00
2026-05-17 19:36:37 +03:00
2026-05-17 19:36:37 +03:00
2026-05-17 19:36:37 +03:00
2026-05-17 19:36:37 +03:00
2026-05-17 19:36:37 +03:00
2026-05-17 19:36:37 +03:00
2026-05-17 19:36:37 +03:00
2026-05-17 19:36:37 +03:00
2026-05-17 19:36:37 +03:00
2026-05-17 19:36:37 +03:00
2026-05-17 19:36:37 +03:00
2026-05-18 00:11:23 +03:00
2026-05-18 00:11:23 +03:00
2026-05-18 00:11:23 +03:00
2026-05-18 00:11:23 +03:00
2026-05-18 00:11:23 +03:00
2026-05-18 00:11:23 +03:00
2026-05-18 17:40:10 +03:00
2026-05-18 17:40:10 +03:00
2026-05-18 17:40:10 +03:00
2026-05-18 17:40:10 +03:00
2026-05-18 17:40:10 +03:00
2026-05-18 17:40:10 +03:00
2026-05-18 17:40:10 +03:00
2026-05-18 17:40:10 +03:00
2026-05-18 17:40:10 +03:00
2026-05-18 17:40:10 +03:00
2026-05-18 17:40:10 +03:00
2026-05-18 17:40:10 +03:00
2026-05-18 17:40:10 +03:00
2026-05-19 12:06:08 +03:00
2026-05-18 17:40:10 +03:00
2026-05-18 17:40:10 +03:00
2026-05-18 17:40:10 +03:00
2026-05-18 17:40:10 +03:00
2026-05-18 17:40:10 +03:00
2026-05-18 17:40:10 +03:00
2026-05-18 18:32:55 +03:00
2026-05-18 18:32:55 +03:00
2026-05-24 22:59:20 +03:00
2026-05-24 22:59:20 +03:00
2026-05-19 00:22:35 +03:00
2026-05-19 00:22:35 +03:00
2026-05-19 11:31:04 +03:00
2026-05-19 11:31:04 +03:00
2026-05-19 19:18:31 +03:00
2026-05-19 19:18:31 +03:00
2026-05-19 21:14:31 +03:00
2026-05-19 21:14:31 +03:00
2026-05-22 19:03:31 +03:00
2026-05-22 19:03:31 +03:00
2026-05-22 19:03:31 +03:00
2026-05-22 19:03:31 +03:00
2026-05-22 19:03:31 +03:00
2026-05-22 19:03:31 +03:00
2026-05-22 19:03:31 +03:00
2026-05-22 19:03:31 +03:00
2026-05-22 19:03:31 +03:00
2026-05-22 19:03:31 +03:00
2026-05-22 19:03:31 +03:00
2026-05-22 19:03:31 +03:00
2026-05-22 19:03:31 +03:00
2026-05-22 19:03:31 +03:00
2026-05-23 01:28:32 +03:00
2026-05-23 01:28:32 +03:00
2026-05-24 22:59:20 +03:00
2026-05-24 22:59:20 +03:00
2026-05-24 22:59:20 +03:00
2026-05-24 22:59:20 +03:00
2026-05-24 22:59:20 +03:00
2026-05-24 22:59:20 +03:00
2026-05-24 22:59:20 +03:00
2026-05-24 22:59:20 +03:00
2026-05-24 22:59:20 +03:00
2026-05-24 22:59:20 +03:00
2026-05-24 22:59:20 +03:00
2026-05-24 22:59:20 +03:00
2026-05-25 09:50:37 +03:00
2026-05-25 09:50:37 +03:00
2026-05-25 11:41:59 +03:00
2026-05-25 11:41:59 +03:00
2026-05-25 12:18:27 +03:00
2026-05-25 12:18:27 +03:00
2026-05-25 15:01:58 +03:00
2026-05-25 15:01:58 +03:00
2026-05-25 15:23:13 +03:00
2026-05-25 15:23:13 +03:00
2026-05-19 11:15:13 +03:00
2026-05-19 11:15:13 +03:00
2026-05-19 11:21:16 +03:00
2026-05-19 11:32:36 +03:00
2026-05-19 11:41:06 +03:00
2026-05-19 11:41:06 +03:00
2026-05-19 11:44:43 +03:00
2026-05-19 11:44:43 +03:00
2026-05-19 11:46:47 +03:00
2026-05-19 11:46:47 +03:00
2026-05-19 11:48:34 +03:00
2026-05-19 11:48:34 +03:00
2026-05-19 11:51:34 +03:00
2026-05-19 11:51:34 +03:00
2026-05-19 11:57:44 +03:00
2026-05-19 11:57:44 +03:00
2026-05-19 11:59:18 +03:00
2026-05-19 11:59:18 +03:00
2026-05-22 13:13:43 +03:00
2026-05-22 13:13:43 +03:00
2026-05-19 12:46:53 +03:00
2026-05-19 12:46:53 +03:00
2026-05-19 21:25:42 +03:00
2026-05-19 21:25:42 +03:00
2026-05-19 21:41:26 +03:00
2026-05-25 15:33:28 +03:00
2026-05-19 21:41:26 +03:00
2026-05-19 22:26:03 +03:00
2026-05-25 15:33:28 +03:00
2026-05-19 22:26:03 +03:00
2026-05-19 22:30:05 +03:00
2026-05-25 15:33:28 +03:00
2026-05-19 22:30:05 +03:00
2026-05-19 22:31:58 +03:00
2026-05-25 15:33:28 +03:00
2026-05-19 22:31:58 +03:00
2026-05-19 22:33:58 +03:00
2026-05-25 15:33:28 +03:00
2026-05-19 22:33:58 +03:00
2026-05-19 22:36:36 +03:00
2026-05-25 15:33:28 +03:00
2026-05-19 22:36:36 +03:00
2026-05-19 22:40:47 +03:00
2026-05-25 15:33:28 +03:00
2026-05-19 22:40:47 +03:00
2026-05-23 01:28:32 +03:00
2026-05-23 01:28:32 +03:00
2026-05-23 01:28:32 +03:00
2026-05-23 01:28:32 +03:00
2026-05-20 09:24:14 +03:00
2026-05-20 09:24:14 +03:00
2026-05-20 09:30:02 +03:00
2026-05-20 09:30:02 +03:00
2026-05-20 09:35:09 +03:00
2026-05-20 09:35:09 +03:00
2026-05-20 10:02:56 +03:00
2026-05-20 10:02:56 +03:00
2026-05-20 10:05:30 +03:00
2026-05-20 10:05:30 +03:00
2026-05-20 10:10:23 +03:00
2026-05-20 10:10:23 +03:00
2026-05-20 10:15:10 +03:00
2026-05-20 10:15:10 +03:00
2026-05-20 11:07:41 +03:00
2026-05-25 15:33:28 +03:00
2026-05-20 11:07:41 +03:00
2026-05-23 01:28:32 +03:00
2026-05-23 01:28:32 +03:00
2026-05-20 10:41:24 +03:00
2026-05-20 10:41:24 +03:00
2026-05-20 10:54:37 +03:00
2026-05-25 15:33:28 +03:00
2026-05-20 10:54:37 +03:00
2026-05-20 13:53:25 +03:00
2026-05-20 13:53:25 +03:00
2026-05-20 14:42:03 +03:00
2026-05-20 14:42:03 +03:00
2026-05-20 16:57:30 +03:00
2026-05-20 16:57:30 +03:00
2026-05-20 17:14:51 +03:00
2026-05-20 17:14:51 +03:00
2026-05-19 12:45:49 +03:00
2026-05-19 12:45:49 +03:00
2026-05-19 12:56:53 +03:00
2026-05-19 12:56:53 +03:00
2026-05-19 12:59:13 +03:00
2026-05-25 15:33:28 +03:00
2026-05-19 12:59:13 +03:00
2026-05-19 18:39:10 +03:00
2026-05-19 18:39:10 +03:00
2026-05-19 18:44:14 +03:00
2026-05-19 18:44:14 +03:00
2026-05-19 18:45:57 +03:00
2026-05-25 15:33:28 +03:00
2026-05-19 18:50:26 +03:00
2026-05-19 18:51:56 +03:00
2026-05-19 18:51:56 +03:00
2026-05-19 18:53:19 +03:00
2026-05-19 18:53:19 +03:00
2026-05-19 18:57:41 +03:00
2026-05-19 18:57:41 +03:00
2026-05-19 19:00:47 +03:00
2026-05-19 19:00:47 +03:00
2026-05-19 20:12:09 +03:00
2026-05-19 20:12:09 +03:00
2026-05-19 21:19:09 +03:00
2026-05-19 21:19:09 +03:00
2026-05-18 17:40:10 +03:00
2026-05-18 17:40:10 +03:00
2026-05-18 17:40:10 +03:00
2026-05-18 17:40:10 +03:00
2026-05-18 17:40:10 +03:00
2026-05-18 17:40:10 +03:00