176bbf6569
Root Cause:
- shared_pool_ensure_capacity_unlocked() used realloc() for metadata
- realloc() → hak_alloc_at(128) → shared_pool_init() → realloc() → INFINITE RECURSION
- Triggered by workset=128 (high memory pressure) but not workset=64
Symptoms:
- bench_fixed_size_hakmem 1 16 128: timeout (infinite hang)
- bench_fixed_size_hakmem 1 1024 128: works fine
- Size-class specific: C1-C3 (16-64B) hung, C7 (1024B) worked
Fix:
- Replace realloc() with direct mmap() for Shared Pool metadata allocation
- Use munmap() to free old mappings (not free()\!)
- Breaks recursion: Shared Pool metadata now allocated outside HAKMEM allocator
Files Modified:
- core/hakmem_shared_pool.c:
* Added sys/mman.h include
* shared_pool_ensure_capacity_unlocked(): realloc → mmap/munmap (40 lines)
- benchmarks/src/fixed/bench_fixed_size.c: (cleanup only, no logic change)
Performance (before → after):
- 16B / workset=128: timeout → 18.5M ops/s ✅ FIXED
- 1024B / workset=128: 4.3M ops/s → 18.5M ops/s (no regression)
- 16B / workset=64: 44M ops/s → 18.5M ops/s (no regression)
Testing:
./out/release/bench_fixed_size_hakmem 10000 256 128
Expected: ~18M ops/s (instant completion)
Before: infinite hang
Commit includes debug trace cleanup (Task agent removed all fprintf debug output).
Phase: 13-C (TinyHeapV2 debugging / Shared Pool stability fix)
174 lines
6.4 KiB
Makefile
174 lines
6.4 KiB
Makefile
core/hakmem_tiny.o: core/hakmem_tiny.c core/hakmem_tiny.h \
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core/hakmem_build_flags.h core/hakmem_trace.h \
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core/hakmem_tiny_mini_mag.h core/hakmem_tiny_config.h \
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core/hakmem_phase7_config.h core/hakmem_tiny_superslab.h \
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core/superslab/superslab_types.h core/hakmem_tiny_superslab_constants.h \
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core/superslab/superslab_inline.h core/superslab/superslab_types.h \
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core/tiny_debug_ring.h core/tiny_remote.h \
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core/hakmem_tiny_superslab_constants.h core/hakmem_super_registry.h \
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core/hakmem_internal.h core/hakmem.h core/hakmem_config.h \
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core/hakmem_features.h core/hakmem_sys.h core/hakmem_whale.h \
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core/hakmem_syscall.h core/hakmem_tiny_magazine.h \
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core/hakmem_tiny_integrity.h core/box/tiny_next_ptr_box.h \
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core/hakmem_tiny_config.h core/tiny_nextptr.h \
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core/hakmem_tiny_batch_refill.h core/hakmem_tiny_stats.h core/tiny_api.h \
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core/hakmem_tiny_stats_api.h core/hakmem_tiny_query_api.h \
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core/hakmem_tiny_rss_api.h core/hakmem_tiny_registry_api.h \
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core/tiny_tls.h core/tiny_debug.h core/tiny_mmap_gate.h \
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core/tiny_refill.h core/slab_handle.h core/tiny_sticky.h \
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core/tiny_ready.h core/box/mailbox_box.h core/hakmem_tiny_superslab.h \
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core/tiny_remote_bg.h core/hakmem_tiny_remote_target.h \
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core/tiny_ready_bg.h core/tiny_route.h core/box/adopt_gate_box.h \
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core/tiny_tls_guard.h core/hakmem_tiny_tls_list.h \
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core/hakmem_tiny_bg_spill.h core/tiny_adaptive_sizing.h \
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core/tiny_system.h core/hakmem_prof.h core/front/quick_slot.h \
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core/front/../hakmem_tiny.h core/front/fast_cache.h \
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core/front/quick_slot.h core/front/../hakmem_tiny_fastcache.inc.h \
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core/front/../hakmem_tiny.h core/front/../tiny_remote.h \
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core/tiny_publish.h core/box/tls_sll_box.h \
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core/box/../hakmem_tiny_config.h core/box/../hakmem_build_flags.h \
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core/box/../tiny_remote.h core/box/../tiny_region_id.h \
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core/box/../hakmem_build_flags.h core/box/../tiny_box_geometry.h \
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core/box/../hakmem_tiny_superslab_constants.h \
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core/box/../hakmem_tiny_config.h core/box/../ptr_track.h \
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core/box/../hakmem_tiny_integrity.h core/box/../ptr_track.h \
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core/box/../ptr_trace.h core/box/../tiny_debug_ring.h \
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core/hakmem_tiny_hotmag.inc.h core/hakmem_tiny_hot_pop.inc.h \
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core/hakmem_tiny_refill.inc.h core/tiny_box_geometry.h \
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core/tiny_region_id.h core/refill/ss_refill_fc.h \
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core/hakmem_tiny_ultra_front.inc.h core/hakmem_tiny_intel.inc \
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core/hakmem_tiny_background.inc core/hakmem_tiny_bg_bin.inc.h \
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core/hakmem_tiny_tls_ops.h core/hakmem_tiny_remote.inc \
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core/hakmem_tiny_init.inc core/box/prewarm_box.h \
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core/hakmem_tiny_bump.inc.h core/hakmem_tiny_smallmag.inc.h \
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core/tiny_atomic.h core/tiny_alloc_fast.inc.h \
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core/tiny_alloc_fast_sfc.inc.h core/hakmem_tiny_fastcache.inc.h \
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core/front/tiny_front_c23.h core/front/../hakmem_build_flags.h \
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core/tiny_alloc_fast_inline.h core/front/tiny_heap_v2.h \
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core/tiny_free_fast.inc.h core/hakmem_tiny_alloc.inc \
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core/hakmem_tiny_slow.inc core/hakmem_tiny_free.inc \
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core/box/free_publish_box.h core/mid_tcache.h \
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core/tiny_free_magazine.inc.h core/tiny_superslab_alloc.inc.h \
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core/box/superslab_expansion_box.h \
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core/box/../superslab/superslab_types.h core/box/../tiny_tls.h \
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core/tiny_superslab_free.inc.h core/box/free_remote_box.h \
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core/box/free_local_box.h core/hakmem_tiny_lifecycle.inc \
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core/hakmem_tiny_slab_mgmt.inc core/tiny_fc_api.h
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core/hakmem_tiny.h:
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core/hakmem_build_flags.h:
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core/hakmem_trace.h:
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core/hakmem_tiny_mini_mag.h:
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core/hakmem_tiny_config.h:
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core/hakmem_phase7_config.h:
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core/hakmem_tiny_superslab.h:
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core/superslab/superslab_types.h:
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core/hakmem_tiny_superslab_constants.h:
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core/superslab/superslab_inline.h:
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core/superslab/superslab_types.h:
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core/tiny_debug_ring.h:
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core/tiny_remote.h:
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core/hakmem_tiny_superslab_constants.h:
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core/hakmem_super_registry.h:
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core/hakmem_internal.h:
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core/hakmem.h:
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core/hakmem_config.h:
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core/hakmem_features.h:
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core/hakmem_sys.h:
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core/hakmem_whale.h:
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core/hakmem_syscall.h:
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core/hakmem_tiny_magazine.h:
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core/hakmem_tiny_integrity.h:
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core/box/tiny_next_ptr_box.h:
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core/hakmem_tiny_config.h:
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core/tiny_nextptr.h:
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core/hakmem_tiny_batch_refill.h:
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core/hakmem_tiny_stats.h:
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core/tiny_api.h:
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core/hakmem_tiny_stats_api.h:
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core/hakmem_tiny_query_api.h:
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core/hakmem_tiny_rss_api.h:
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core/hakmem_tiny_registry_api.h:
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core/tiny_tls.h:
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core/tiny_debug.h:
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core/tiny_mmap_gate.h:
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core/tiny_refill.h:
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core/slab_handle.h:
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core/tiny_sticky.h:
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core/tiny_ready.h:
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core/box/mailbox_box.h:
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core/hakmem_tiny_superslab.h:
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core/tiny_remote_bg.h:
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core/hakmem_tiny_remote_target.h:
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core/tiny_ready_bg.h:
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core/tiny_route.h:
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core/box/adopt_gate_box.h:
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core/tiny_tls_guard.h:
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core/hakmem_tiny_tls_list.h:
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core/hakmem_tiny_bg_spill.h:
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core/tiny_adaptive_sizing.h:
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core/tiny_system.h:
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core/hakmem_prof.h:
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core/front/quick_slot.h:
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core/front/../hakmem_tiny.h:
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core/front/fast_cache.h:
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core/front/quick_slot.h:
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core/front/../hakmem_tiny_fastcache.inc.h:
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core/front/../hakmem_tiny.h:
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core/front/../tiny_remote.h:
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core/tiny_publish.h:
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core/box/tls_sll_box.h:
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core/box/../hakmem_tiny_config.h:
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core/box/../hakmem_build_flags.h:
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core/box/../tiny_remote.h:
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core/box/../tiny_region_id.h:
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core/box/../hakmem_build_flags.h:
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core/box/../tiny_box_geometry.h:
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core/box/../hakmem_tiny_superslab_constants.h:
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core/box/../hakmem_tiny_config.h:
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core/box/../ptr_track.h:
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core/box/../hakmem_tiny_integrity.h:
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core/box/../ptr_track.h:
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core/box/../ptr_trace.h:
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core/box/../tiny_debug_ring.h:
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core/hakmem_tiny_hotmag.inc.h:
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core/hakmem_tiny_hot_pop.inc.h:
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core/hakmem_tiny_refill.inc.h:
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core/tiny_box_geometry.h:
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core/tiny_region_id.h:
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core/refill/ss_refill_fc.h:
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core/hakmem_tiny_ultra_front.inc.h:
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core/hakmem_tiny_intel.inc:
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core/hakmem_tiny_background.inc:
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core/hakmem_tiny_bg_bin.inc.h:
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core/hakmem_tiny_tls_ops.h:
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core/hakmem_tiny_remote.inc:
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core/hakmem_tiny_init.inc:
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core/box/prewarm_box.h:
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core/hakmem_tiny_bump.inc.h:
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core/hakmem_tiny_smallmag.inc.h:
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core/tiny_atomic.h:
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core/tiny_alloc_fast.inc.h:
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core/tiny_alloc_fast_sfc.inc.h:
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core/hakmem_tiny_fastcache.inc.h:
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core/front/tiny_front_c23.h:
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core/front/../hakmem_build_flags.h:
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core/tiny_alloc_fast_inline.h:
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core/front/tiny_heap_v2.h:
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core/tiny_free_fast.inc.h:
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core/hakmem_tiny_alloc.inc:
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core/hakmem_tiny_slow.inc:
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core/hakmem_tiny_free.inc:
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core/box/free_publish_box.h:
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core/mid_tcache.h:
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core/tiny_free_magazine.inc.h:
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core/tiny_superslab_alloc.inc.h:
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core/box/superslab_expansion_box.h:
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core/box/../superslab/superslab_types.h:
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core/box/../tiny_tls.h:
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core/tiny_superslab_free.inc.h:
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core/box/free_remote_box.h:
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core/box/free_local_box.h:
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core/hakmem_tiny_lifecycle.inc:
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core/hakmem_tiny_slab_mgmt.inc:
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core/tiny_fc_api.h:
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