5582cbc22c
1. Archive unused backend files (ss_legacy/unified_backend_box.c/h) - These files were not linked in the build - Moved to archive/ to reduce confusion 2. Created HAK_RET_ALLOC_BLOCK macro for SuperSlab allocations - Replaces superslab_return_block() function - Consistent with existing HAK_RET_ALLOC pattern - Single source of truth for header writing - Defined in hakmem_tiny_superslab_internal.h 3. Added header validation on TLS SLL push - Detects blocks pushed without proper header - Enabled via HAKMEM_TINY_SLL_VALIDATE_HDR=1 (release) - Always on in debug builds - Logs first 10 violations with backtraces Benefits: - Easier to track allocation paths - Catches header bugs at push time - More maintainable macro-based design Note: Larson bug still reproduces - header corruption occurs before push validation can catch it. 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude <noreply@anthropic.com>
44 lines
1.6 KiB
C
44 lines
1.6 KiB
C
// Box: Legacy Backend (Phase 12)
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// Purpose: Per-class SuperSlabHead backend (legacy implementation)
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//
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// Responsibilities:
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// - Maintain per-class SuperSlabHead (g_superslab_heads)
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// - Initialize SuperSlabHead for a class
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// - Expand SuperSlabHead by allocating new chunks
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// - Find chunk for a pointer (chunk walk)
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// - Legacy hint box (per-thread, per-class bump allocation)
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//
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// Dependencies:
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// - ss_allocation_box (superslab_allocate, superslab_free, superslab_init_slab)
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// - hakmem_tiny_config (g_tiny_class_sizes)
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//
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// API:
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// - init_superslab_head() - initialize SuperSlabHead for a class
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// - expand_superslab_head() - expand SuperSlabHead by allocating new chunk
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// - find_chunk_for_ptr() - find chunk for a pointer
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// - hak_tiny_alloc_superslab_backend_legacy() - per-class backend
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// - hak_tiny_alloc_superslab_backend_hint() - hint optimization
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// - hak_tiny_ss_hint_record() - hint recording
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#ifndef SS_LEGACY_BACKEND_BOX_H
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#define SS_LEGACY_BACKEND_BOX_H
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#include "hakmem_tiny_superslab.h"
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// Global per-class SuperSlabHeads
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extern SuperSlabHead* g_superslab_heads[TINY_NUM_CLASSES_SS];
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// SuperSlabHead management
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SuperSlabHead* init_superslab_head(int class_idx);
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int expand_superslab_head(SuperSlabHead* head);
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SuperSlab* find_chunk_for_ptr(void* ptr, int class_idx);
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// Legacy backend API
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void* hak_tiny_alloc_superslab_backend_legacy(int class_idx);
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// Hint box (optional optimization)
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void* hak_tiny_alloc_superslab_backend_hint(int class_idx);
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void hak_tiny_ss_hint_record(int class_idx, SuperSlab* ss, int slab_idx);
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#endif // SS_LEGACY_BACKEND_BOX_H
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