a430545820
目的: hakmem_tiny_superslab.h の肥大化を解消 (500+ 行) 実装内容: 1. superslab_types.h を作成 - SuperSlab 構造体定義 (TinySlabMeta, SuperSlab) - 設定定数 (SUPERSLAB_SIZE_MAX, TINY_NUM_CLASSES_SS) - コンパイル時アサーション 2. superslab_inline.h を作成 - ホットパス用インライン関数を集約 - ss_slabs_capacity(), slab_index_for() - tiny_slab_base_for(), ss_remote_push() - _ss_remote_drain_to_freelist_unsafe() - Fail-fast validation helpers - ACE helpers (hak_now_ns, hak_tiny_superslab_next_lg) 3. hakmem_tiny_superslab.h をリファクタリング - 665 行 → 104 行 (-84%) - include のみに書き換え - 関数宣言と extern 宣言のみ残す 効果: ✅ ビルド成功 (libhakmem.so, larson_hakmem) ✅ Mid-Large allocator テスト通過 (3.98M ops/s) ⚠️ Tiny allocator の freelist corruption バグは未解決 (リファクタリングのスコープ外) 注意: - Phase 6-2.6/6-2.7 の freelist バグは依然として存在 - リファクタリングは保守性向上のみが目的 - バグ修正は次のフェーズで対応 🤖 Generated with Claude Code Co-Authored-By: Claude <noreply@anthropic.com>
104 lines
3.8 KiB
C
104 lines
3.8 KiB
C
// hakmem_tiny_superslab.h - SuperSlab allocator for Tiny Pool (Phase 6.22)
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// Purpose: mimalloc-inspired 2MB aligned slab allocation for fast pointer→slab lookup
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// License: MIT
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// Date: 2025-10-24
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// Phase 6-2.8: Refactored into modular headers (types, inline)
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#ifndef HAKMEM_TINY_SUPERSLAB_H
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#define HAKMEM_TINY_SUPERSLAB_H
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#include <stdint.h>
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#include <stddef.h>
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#include <stdbool.h>
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#include <stdatomic.h>
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#include <stdlib.h>
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#include <time.h> // Phase 8.3: For clock_gettime() in hak_now_ns()
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#include <signal.h>
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#include <stdio.h> // For fprintf() debugging
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#include <pthread.h>
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// Phase 6-2.8: Modular headers (types, inline functions)
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#include "superslab/superslab_types.h"
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#include "superslab/superslab_inline.h"
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// Legacy includes (for backward compatibility)
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#include "tiny_debug_ring.h"
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#include "tiny_remote.h"
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#include "hakmem_tiny_superslab_constants.h" // Phase 6-2.5: Centralized layout constants
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// Debug instrumentation flags (defined in hakmem_tiny.c)
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extern int g_debug_remote_guard;
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extern int g_tiny_safe_free_strict;
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extern _Atomic uint64_t g_ss_active_dec_calls;
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uint32_t tiny_remote_drain_threshold(void);
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// ============================================================================
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// SuperSlab Management Functions
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// ============================================================================
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// Allocate a new SuperSlab (2MB aligned)
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SuperSlab* superslab_allocate(uint8_t size_class);
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// Free a SuperSlab
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void superslab_free(SuperSlab* ss);
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// Initialize a slab within SuperSlab
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void superslab_init_slab(SuperSlab* ss, int slab_idx, size_t block_size, uint32_t owner_tid);
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// Mark a slab as active
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void superslab_activate_slab(SuperSlab* ss, int slab_idx);
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// Mark a slab as inactive
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void superslab_deactivate_slab(SuperSlab* ss, int slab_idx);
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// Find first free slab index (-1 if none)
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int superslab_find_free_slab(SuperSlab* ss);
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// Statistics
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void superslab_print_stats(SuperSlab* ss);
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// Phase 8.3: ACE statistics
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void superslab_ace_print_stats(void);
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// ============================================================================
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// Phase 8.3: ACE (Adaptive Cache Engine) - SuperSlab adaptive sizing
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// ============================================================================
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// ACE tick function (called periodically, ~150ms interval)
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// Observes metrics and decides promotion (1MB→2MB) or demotion (2MB→1MB)
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void hak_tiny_superslab_ace_tick(int class_idx, uint64_t now_ns);
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// Phase 8.4: ACE Observer (called from Learner thread - zero hot-path overhead)
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void hak_tiny_superslab_ace_observe_all(void);
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// ============================================================================
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// Partial SuperSlab adopt/publish (per-class single-slot)
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// ============================================================================
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// Publish a SuperSlab with available freelist for other threads to adopt.
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void ss_partial_publish(int class_idx, SuperSlab* ss);
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// Adopt published SuperSlab for the class (returns NULL if none).
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SuperSlab* ss_partial_adopt(int class_idx);
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// ============================================================================
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// SuperSlab adopt gate (publish/adopt wiring helper)
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// ============================================================================
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// Environment-aware switch that keeps free/alloc sides in sync. Default:
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// - Disabled until cross-thread free is observed.
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// - `HAKMEM_TINY_SS_ADOPT=1` forces ON, `=0` forces OFF.
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int tiny_adopt_gate_should_publish(void);
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int tiny_adopt_gate_should_adopt(void);
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void tiny_adopt_gate_on_remote_seen(int class_idx);
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// ============================================================================
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// External variable declarations
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// ============================================================================
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extern _Atomic int g_ss_remote_seen; // set to 1 on first remote free observed
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extern int g_remote_force_notify;
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#endif // HAKMEM_TINY_SUPERSLAB_H
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