87b7d30998
Phase 9-1: O(1) SuperSlab lookup optimization - Created ss_addr_map_box: Hash table (8192 buckets) for O(1) SuperSlab lookup - Created ss_tls_hint_box: TLS caching layer for SuperSlab hints - Integrated hash table into registry (init, insert, remove, lookup) - Modified hak_super_lookup() to use new hash table - Expected: 50-80 cycles → 10-20 cycles (not verified - SuperSlab disabled by default) Phase 9-2: EMPTY slab recycling implementation - Created slab_recycling_box: SLAB_TRY_RECYCLE() macro following Box pattern - Integrated into remote drain (superslab_slab.c) - Integrated into TLS SLL drain (tls_sll_drain_box.h) with touched slab tracking - Observable: Debug tracing via HAKMEM_SLAB_RECYCLE_TRACE - Updated Makefile: Added new box objects to 3 build targets Known Issues: - SuperSlab registry exhaustion still occurs (unregistration not working) - shared_pool_release_slab() may not be removing from g_super_reg[] - Needs investigation before Phase 9-2 can be completed Expected Impact (when fixed): - Stage 1 hit rate: 0% → 80% - shared_fail events: 4 → 0 - Kernel overhead: 55% → 15% - Throughput: 16.5M → 25-30M ops/s (+50-80%) 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude <noreply@anthropic.com>
24 lines
927 B
C
24 lines
927 B
C
// ss_tls_hint_box.c - Phase 9-1-4: TLS Hints Implementation
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// Purpose: Thread-local storage for SuperSlab lookup cache
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#include "ss_tls_hint_box.h"
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#include "../hakmem_tiny_superslab.h"
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// ============================================================================
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// TLS Variables
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// ============================================================================
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// TLS cache: Most recently used SuperSlab per size class
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// - Each thread gets its own cache (no synchronization needed)
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// - Initialized to NULL on first access
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__thread struct SuperSlab* g_tls_ss_hint[TINY_NUM_CLASSES] = {NULL};
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// ============================================================================
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// Statistics (Debug builds only)
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// ============================================================================
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#if !HAKMEM_BUILD_RELEASE
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// Per-thread statistics for TLS hint performance
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__thread SSTLSHintStats g_tls_hint_stats = {0};
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#endif
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