#ifndef HAKMEM_LEARN_LOG_H
#define HAKMEM_LEARN_LOG_H

#include <stdint.h>

typedef struct {
    uint64_t ts_ns;
    uintptr_t site;
    uint32_t size;
    uint16_t class_idx;
    uint32_t tid_low;
} hkm_log_entry_t;

typedef struct hkm_log_ring {
    hkm_log_entry_t entries[1024];
    volatile uint32_t head; // producer index (per-thread)
    volatile uint32_t tail; // consumer index (learner)
} hkm_log_ring_t;

void hkm_log_init_tls(void);
void hkm_log_maybe(uintptr_t site, uint32_t size, uint16_t class_idx);
void hkm_log_flush_file(const char* path);

#endif