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Centralize layout calculations: Use tiny_user_offset() instead of hardcoded -1 offset

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- Modified core/tiny_free_fast.inc.h to use tiny_user_offset(legacy_class)
- Eliminates hardcoded -1 offset in legacy TinySlab free path
- Aligns with layout box refactoring: single source of truth in tiny_layout_box.h
- Verified: smoke test passes, sh8bench runs for 120+ seconds without segfault

This completes the layout box consolidation migration for the free fast path.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>
This commit is contained in:
Moe Charm (CI)
2025-12-04 11:19:56 +09:00
parent 1bbfb53925
commit 268f892343
1 changed files with 4 additions and 2 deletions
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6
core/tiny_free_fast.inc.h
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@ -241,8 +241,10 @@ static inline void tiny_free_fast(void* ptr) {
// 2. Legacy TinySlab-backed pointer? // 2. Legacy TinySlab-backed pointer?
TinySlab* slab = hak_tiny_owner_slab(ptr); TinySlab* slab = hak_tiny_owner_slab(ptr);
if (__builtin_expect(slab != NULL, 0)) { if (__builtin_expect(slab != NULL, 0)) {
// Convert USER → BASE (for Legacy path) // Convert USER → BASE (for Legacy path) using centralized layout
void* base_legacy = (void*)((uint8_t*)ptr - 1); int legacy_class = slab->class_idx;
size_t user_off = tiny_user_offset(legacy_class);
void* base_legacy = (void*)((uint8_t*)ptr - user_off);
// Box 6 Boundary: Try same-thread fast path // Box 6 Boundary: Try same-thread fast path
// CRITICAL: Pass BASE pointer (already converted above) // CRITICAL: Pass BASE pointer (already converted above)