1010a961fb
- Root cause: header-based class indexing (HEADER_CLASSIDX=1) wrote a 1-byte header during allocation, but linear carve/refill and initial slab capacity still used bare class block sizes. This mismatch could overrun slab usable space and corrupt freelists, causing reproducible SEGV at ~100k iters. Changes - Superslab: compute capacity with effective stride (block_size + header for classes 0..6; class7 remains headerless) in superslab_init_slab(). Add a debug-only bound check in superslab_alloc_from_slab() to fail fast if carve would exceed usable bytes. - Refill (non-P0 and P0): use header-aware stride for all linear carving and TLS window bump operations. Ensure alignment/validation in tiny_refill_opt.h also uses stride, not raw class size. - Drain: keep existing defense-in-depth for remote sentinel and sanitize nodes before splicing into freelist (already present). Notes - This unifies the memory layout across alloc/linear-carve/refill with a single stride definition and keeps class7 (1024B) headerless as designed. - Debug builds add fail-fast checks; release builds remain lean. Next - Re-run Tiny benches (256/1024B) in debug to confirm stability, then in release. If any remaining crash persists, bisect with HAKMEM_TINY_P0_BATCH_REFILL=0 to isolate P0 batch carve, and continue reducing branch-miss as planned.
71 lines
2.7 KiB
C
71 lines
2.7 KiB
C
// ace_pool_connector.h - ACE-Pool Connection Box
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// Box Theory: Single Responsibility - Validate and route ACE ↔ Pool connections
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//
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// Purpose:
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// - Make ACE-Pool connection VISIBLE and VALIDATED
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// - Centralize error handling and logging
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// - Health check API for diagnostics
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//
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// Responsibilities:
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// ✅ Validate Pool is initialized before ACE uses it
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// ✅ Log connection status (success/failure/reason)
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// ✅ Provide health check API
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// ❌ NOT responsible for: allocation logic, size rounding, or memory management
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//
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// Box Boundaries:
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// INPUT: ACE requests allocation from Pool (size, site_id)
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// OUTPUT: Pool allocation result (ptr or NULL) + reason code
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// ERROR: Clear error messages (not silent failures!)
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#ifndef ACE_POOL_CONNECTOR_H
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#define ACE_POOL_CONNECTOR_H
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#include <stddef.h>
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#include <stdint.h>
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// ============================================================================
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// Box API: ACE-Pool Connection
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// ============================================================================
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// Connection status codes
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typedef enum {
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ACE_POOL_OK = 0, // Connection healthy
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ACE_POOL_NOT_INIT, // Pool not initialized
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ACE_POOL_NO_PAGES, // Pool has no pre-allocated pages
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ACE_POOL_WRAPPER_BLOCKED, // Wrapper protection blocking
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ACE_POOL_SIZE_MISMATCH, // Size not in Pool range
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ACE_POOL_ALLOC_FAILED, // Pool allocation returned NULL
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} AcePoolStatus;
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// Health check result
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typedef struct {
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int pool_initialized; // 1 if Pool is initialized
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int ace_enabled; // 1 if ACE is enabled
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int wrap_l2_enabled; // 1 if WRAP_L2 is enabled
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int bridge_class_5_size; // Size of Bridge class 5 (40KB expected)
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int bridge_class_6_size; // Size of Bridge class 6 (52KB expected)
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int preallocated_pages; // Number of pre-allocated pages (should be > 0)
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AcePoolStatus status; // Overall status
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const char* message; // Human-readable status message
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} AcePoolHealth;
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// ============================================================================
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// Box Functions
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// ============================================================================
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// Get health status (for debugging and monitoring)
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AcePoolHealth ace_pool_get_health(void);
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// Validate connection is ready (called by ACE before using Pool)
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// Returns: 1 if ready, 0 if not (sets reason code)
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int ace_pool_validate_connection(AcePoolStatus* out_status);
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// Connect ACE to Pool (wrapper around hak_pool_try_alloc with validation)
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// Returns: Allocated pointer or NULL (logs reason if NULL)
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void* ace_pool_try_alloc(size_t size, uintptr_t site_id, AcePoolStatus* out_status);
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// Print health status (for debugging)
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void ace_pool_print_health(void);
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#endif // ACE_POOL_CONNECTOR_H
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