tomoaki/hakmem
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Phase 15: Box BenchMeta separation + ExternalGuard debug + investigation report

Browse Source 
- Implement Box BenchMeta pattern in bench_random_mixed.c (BENCH_META_CALLOC/FREE)
- Add enhanced debug logging to external_guard_box.h (caller tracking, FG classification)
- Document investigation in PHASE15_BUG_ANALYSIS.md

Issue: Page-aligned MIDCAND pointer not in SuperSlab registry → ExternalGuard → crash
Hypothesis: May be pre-existing SuperSlab bug (not Phase 15-specific)
Next: Test in Phase 14-C to verify
This commit is contained in:
Moe Charm (CI)
2025-11-15 23:00:21 +09:00
parent cef99b311d
commit d378ee11a0
9 changed files with 785 additions and 40 deletions
Download Patch File Download Diff File Expand all files Collapse all files

63
core/hakmem_tiny.c
View File

@ -1767,6 +1767,10 @@ TinySlab* hak_tiny_owner_slab(void* ptr) {
__thread TinyHeapV2Mag g_tiny_heap_v2_mag[TINY_NUM_CLASSES];
__thread TinyHeapV2Stats g_tiny_heap_v2_stats[TINY_NUM_CLASSES];
// Phase 14: TinyUltraHot - Ultra-fast C1/C2 path (L1 dcache miss reduction)
#include "front/tiny_ultra_hot.h"
__thread TinyUltraHot g_ultra_hot;
// Box 6: Free Fast Path (Layer 2 - 2-3 instructions)
#include "tiny_free_fast.inc.h"
@ -2090,3 +2094,62 @@ void tiny_heap_v2_print_stats(void) {
fprintf(stderr, "==============================\n\n");
}
// Phase 14 + Phase 14-B: UltraHot statistics (C2-C5)
void ultra_hot_print_stats(void) {
extern __thread TinyUltraHot g_ultra_hot;
static int g_stats_enable = -1;
if (g_stats_enable == -1) {
const char* e = getenv("HAKMEM_TINY_ULTRA_HOT_STATS");
g_stats_enable = (e && *e && *e != '0') ? 1 : 0;
}
if (!g_stats_enable) return;
fprintf(stderr, "\n=== TinyUltraHot Statistics (Phase 14 + 14-B) ===\n");
// C1 (16B) stats - Phase 14
uint64_t c1_total = g_ultra_hot.c1_alloc_calls;
if (c1_total > 0) {
double c1_hit_rate = 100.0 * g_ultra_hot.c1_hits / c1_total;
fprintf(stderr, "[C2-16B] alloc=%lu hits=%lu (%.1f%%) misses=%lu\n",
c1_total, g_ultra_hot.c1_hits, c1_hit_rate, g_ultra_hot.c1_misses);
fprintf(stderr, " free=%lu free_hits=%lu\n",
g_ultra_hot.c1_free_calls, g_ultra_hot.c1_free_hits);
}
// C2 (32B) stats - Phase 14
uint64_t c2_total = g_ultra_hot.c2_alloc_calls;
if (c2_total > 0) {
double c2_hit_rate = 100.0 * g_ultra_hot.c2_hits / c2_total;
fprintf(stderr, "[C3-32B] alloc=%lu hits=%lu (%.1f%%) misses=%lu\n",
c2_total, g_ultra_hot.c2_hits, c2_hit_rate, g_ultra_hot.c2_misses);
fprintf(stderr, " free=%lu free_hits=%lu\n",
g_ultra_hot.c2_free_calls, g_ultra_hot.c2_free_hits);
}
// C4 (64B) stats - Phase 14-B NEW
uint64_t c4_total = g_ultra_hot.c4_alloc_calls;
if (c4_total > 0) {
double c4_hit_rate = 100.0 * g_ultra_hot.c4_hits / c4_total;
fprintf(stderr, "[C4-64B] alloc=%lu hits=%lu (%.1f%%) misses=%lu (NEW Phase 14-B)\n",
c4_total, g_ultra_hot.c4_hits, c4_hit_rate, g_ultra_hot.c4_misses);
fprintf(stderr, " free=%lu free_hits=%lu\n",
g_ultra_hot.c4_free_calls, g_ultra_hot.c4_free_hits);
}
// C5 (128B) stats - Phase 14-B NEW
uint64_t c5_total = g_ultra_hot.c5_alloc_calls;
if (c5_total > 0) {
double c5_hit_rate = 100.0 * g_ultra_hot.c5_hits / c5_total;
fprintf(stderr, "[C5-128B] alloc=%lu hits=%lu (%.1f%%) misses=%lu (NEW Phase 14-B)\n",
c5_total, g_ultra_hot.c5_hits, c5_hit_rate, g_ultra_hot.c5_misses);
fprintf(stderr, " free=%lu free_hits=%lu\n",
g_ultra_hot.c5_free_calls, g_ultra_hot.c5_free_hits);
}
if (c1_total == 0 && c2_total == 0 && c4_total == 0 && c5_total == 0) {
fprintf(stderr, "(No UltraHot allocs recorded)\n");
}
fprintf(stderr, "==================================================\n\n");
}