1da8754d45
**問題:**
- Larson 4T で 100% SEGV (1T は 2.09M ops/s で完走)
- System/mimalloc は 4T で 33.52M ops/s 正常動作
- SS OFF + Remote OFF でも 4T で SEGV
**根本原因: (Task agent ultrathink 調査結果)**
```
CRASH: mov (%r15),%r13
R15 = 0x6261 ← ASCII "ba" (ゴミ値、未初期化TLS)
```
Worker スレッドの TLS 変数が未初期化:
- `__thread void* g_tls_sll_head[TINY_NUM_CLASSES];` ← 初期化なし
- pthread_create() で生成されたスレッドでゼロ初期化されない
- NULL チェックが通過 (0x6261 != NULL) → dereference → SEGV
**修正内容:**
全 TLS 配列に明示的初期化子 `= {0}` を追加:
1. **core/hakmem_tiny.c:**
- `g_tls_sll_head[TINY_NUM_CLASSES] = {0}`
- `g_tls_sll_count[TINY_NUM_CLASSES] = {0}`
- `g_tls_live_ss[TINY_NUM_CLASSES] = {0}`
- `g_tls_bcur[TINY_NUM_CLASSES] = {0}`
- `g_tls_bend[TINY_NUM_CLASSES] = {0}`
2. **core/tiny_fastcache.c:**
- `g_tiny_fast_cache[TINY_FAST_CLASS_COUNT] = {0}`
- `g_tiny_fast_count[TINY_FAST_CLASS_COUNT] = {0}`
- `g_tiny_fast_free_head[TINY_FAST_CLASS_COUNT] = {0}`
- `g_tiny_fast_free_count[TINY_FAST_CLASS_COUNT] = {0}`
3. **core/hakmem_tiny_magazine.c:**
- `g_tls_mags[TINY_NUM_CLASSES] = {0}`
4. **core/tiny_sticky.c:**
- `g_tls_sticky_ss[TINY_NUM_CLASSES][TINY_STICKY_RING] = {0}`
- `g_tls_sticky_idx[TINY_NUM_CLASSES][TINY_STICKY_RING] = {0}`
- `g_tls_sticky_pos[TINY_NUM_CLASSES] = {0}`
**効果:**
```
Before: 1T: 2.09M ✅ | 4T: SEGV 💀
After: 1T: 2.41M ✅ | 4T: 4.19M ✅ (+15% 1T, SEGV解消)
```
**テスト:**
```bash
# 1 thread: 完走
./larson_hakmem 2 8 128 1024 1 12345 1
→ Throughput = 2,407,597 ops/s ✅
# 4 threads: 完走（以前は SEGV）
./larson_hakmem 2 8 128 1024 1 12345 4
→ Throughput = 4,192,155 ops/s ✅
```
**調査協力:** Task agent (ultrathink mode) による完璧な根本原因特定
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude <noreply@anthropic.com>
51 lines
2.4 KiB
C
51 lines
2.4 KiB
C
// hak_exit_debug.inc.h — Exit-time Tiny/SS debug dump (one-shot)
|
|
#ifndef HAK_EXIT_DEBUG_INC_H
|
|
#define HAK_EXIT_DEBUG_INC_H
|
|
|
|
static void hak_flush_tiny_exit(void) {
|
|
if (g_flush_tiny_on_exit) {
|
|
hak_tiny_magazine_flush_all();
|
|
hak_tiny_trim();
|
|
}
|
|
if (g_ultra_debug_on_exit) {
|
|
hak_tiny_ultra_debug_dump();
|
|
}
|
|
// Path debug dump (optional): HAKMEM_TINY_PATH_DEBUG=1
|
|
hak_tiny_path_debug_dump();
|
|
// Extended counters (optional): HAKMEM_TINY_COUNTERS_DUMP=1
|
|
extern void hak_tiny_debug_counters_dump(void);
|
|
hak_tiny_debug_counters_dump();
|
|
|
|
// DEBUG: Print SuperSlab accounting stats
|
|
extern _Atomic uint64_t g_ss_active_dec_calls;
|
|
extern _Atomic uint64_t g_hak_tiny_free_calls;
|
|
extern _Atomic uint64_t g_ss_remote_push_calls;
|
|
extern _Atomic uint64_t g_free_ss_enter;
|
|
extern _Atomic uint64_t g_free_local_box_calls;
|
|
extern _Atomic uint64_t g_free_remote_box_calls;
|
|
extern uint64_t g_superslabs_allocated;
|
|
extern uint64_t g_superslabs_freed;
|
|
|
|
fprintf(stderr, "\n[EXIT DEBUG] SuperSlab Accounting:\n");
|
|
fprintf(stderr, " g_superslabs_allocated = %llu\n", (unsigned long long)g_superslabs_allocated);
|
|
fprintf(stderr, " g_superslabs_freed = %llu\n", (unsigned long long)g_superslabs_freed);
|
|
fprintf(stderr, " g_hak_tiny_free_calls = %llu\n",
|
|
(unsigned long long)atomic_load_explicit(&g_hak_tiny_free_calls, memory_order_relaxed));
|
|
fprintf(stderr, " g_ss_remote_push_calls = %llu\n",
|
|
(unsigned long long)atomic_load_explicit(&g_ss_remote_push_calls, memory_order_relaxed));
|
|
fprintf(stderr, " g_ss_active_dec_calls = %llu\n",
|
|
(unsigned long long)atomic_load_explicit(&g_ss_active_dec_calls, memory_order_relaxed));
|
|
extern _Atomic uint64_t g_free_wrapper_calls;
|
|
fprintf(stderr, " g_free_wrapper_calls = %llu\n",
|
|
(unsigned long long)atomic_load_explicit(&g_free_wrapper_calls, memory_order_relaxed));
|
|
fprintf(stderr, " g_free_ss_enter = %llu\n",
|
|
(unsigned long long)atomic_load_explicit(&g_free_ss_enter, memory_order_relaxed));
|
|
fprintf(stderr, " g_free_local_box_calls = %llu\n",
|
|
(unsigned long long)atomic_load_explicit(&g_free_local_box_calls, memory_order_relaxed));
|
|
fprintf(stderr, " g_free_remote_box_calls = %llu\n",
|
|
(unsigned long long)atomic_load_explicit(&g_free_remote_box_calls, memory_order_relaxed));
|
|
}
|
|
|
|
#endif // HAK_EXIT_DEBUG_INC_H
|
|
|