dangernoodle-io / breadboard / 28560892169

100%

push

github

feat(bb_arena): generic multi-instance arena primitive (BSS/heap/SPIRAM backing) (B1-478 PR A) (#652)

- new components/bb_arena/ primitive: bb_arena_init (caller buffer),
  bb_arena_init_heap/_spiram (bb_mem-backed), alloc/free/reset/owns/
  free_bytes/get_stats/destroy
- shared platform/host/bb_arena/bb_arena.c compiles for both host and
  ESP-IDF; init_heap/_spiram reuse the existing bb_mem SPIRAM-preferred
  facade instead of hand-rolling a second allocator (CLAUDE.md
  reuse-or-extract rule) rather than duplicating bb_heap_arena's
  multi_heap-based draft
- additive only: zero consumers, bb_heap_arena/bb_mqtt/existing Kconfig
  untouched; wired into native_scaffold.py + platformio.ini host build and
  the smoke example's REQUIRES (dormant, proves it compiles under -Werror)
- host tests: test/test_host/test_arena.c covers every init variant, alloc/
  owns/reset, free_bytes accounting, exhaustion, bb_mem alloc-fail
  injection, and destroy semantics for caller vs owned buffers

Co-authored-by: Claude Opus 4.8 <noreply@anthropic.com>

1840 of 1840 branches covered (100.0%)

Branch coverage included in aggregate %.

3167 of 3167 relevant lines covered (100.0%)

1290.49 hits per line