hakmem/core/tiny_debug_ring.h

#ifndef TINY_DEBUG_RING_H
#define TINY_DEBUG_RING_H

#include <stdint.h>
#include <stddef.h>
#include "hakmem_build_flags.h"

// Tiny Debug Ring Trace (Phase 8 tooling)
// Environment: HAKMEM_TINY_TRACE_RING=1 to enable
// Records recent alloc/free events and dumps them on SIGSEGV.

enum {
    TINY_RING_EVENT_ALLOC_ENTER = 1,
    TINY_RING_EVENT_ALLOC_SUCCESS,
    TINY_RING_EVENT_ALLOC_NULL,
    TINY_RING_EVENT_ALLOC_REFILL_START,
    TINY_RING_EVENT_ALLOC_REFILL_NULL,
    TINY_RING_EVENT_ALLOC_BIND,
    TINY_RING_EVENT_FREE_ENTER,
    TINY_RING_EVENT_FREE_FAST,
    TINY_RING_EVENT_FREE_REMOTE,
    TINY_RING_EVENT_FREE_LOCAL,
    TINY_RING_EVENT_FREE_RETURN_MAG,
    TINY_RING_EVENT_SUPERSLAB_ADOPT,
    TINY_RING_EVENT_SUPERSLAB_ALLOC,
    TINY_RING_EVENT_SUPERSLAB_PUBLISH,
    TINY_RING_EVENT_SUPERSLAB_ADOPT_FAIL,
    TINY_RING_EVENT_REMOTE_PUSH,
    TINY_RING_EVENT_REMOTE_INVALID,
    TINY_RING_EVENT_REMOTE_DRAIN,
    TINY_RING_EVENT_OWNER_ACQUIRE,
    TINY_RING_EVENT_OWNER_RELEASE,
    TINY_RING_EVENT_FRONT_BYPASS,
    TINY_RING_EVENT_MAILBOX_PUBLISH,
    TINY_RING_EVENT_MAILBOX_FETCH,
    TINY_RING_EVENT_MAILBOX_FETCH_NULL,
    TINY_RING_EVENT_ROUTE
};

#if HAKMEM_BUILD_RELEASE && !HAKMEM_DEBUG_VERBOSE
static inline void tiny_debug_ring_init(void) {
    (void)0;
}
static inline void tiny_debug_ring_record(uint16_t event, uint16_t class_idx, void* ptr, uintptr_t aux) {
    (void)event; (void)class_idx; (void)ptr; (void)aux;
}
#else
void tiny_debug_ring_init(void);
void tiny_debug_ring_record(uint16_t event, uint16_t class_idx, void* ptr, uintptr_t aux);
#endif

#endif // TINY_DEBUG_RING_H