#ifndef CRAWLER_H

#define CRAWLER_H

#define LRU_CRAWLER_CAP_REMAINING -1

typedef struct {

    uint64_t histo[61];

    uint64_t ttl_hourplus;

    uint64_t noexp;

    uint64_t reclaimed;

    uint64_t seen;

    rel_time_t start_time;

    rel_time_t end_time;

    bool run_complete;

} crawlerstats_t;

struct crawler_expired_data {

    pthread_mutex_t lock;

    crawlerstats_t crawlerstats[POWER_LARGEST];

    /* redundant with crawlerstats_t so we can get overall start/stop/done */

    rel_time_t start_time;

    rel_time_t end_time;

    bool crawl_complete;

    bool is_external; /* whether this was an alloc local or remote to the module. */

};

enum crawler_result_type {

    CRAWLER_OK=0, CRAWLER_RUNNING, CRAWLER_BADCLASS, CRAWLER_NOTSTARTED, CRAWLER_ERROR

};

int start_item_crawler_thread(void);

#define CRAWLER_WAIT true

#define CRAWLER_NOWAIT false

int stop_item_crawler_thread(bool wait);

int init_lru_crawler(void *arg);

enum crawler_result_type lru_crawler_crawl(char *slabs, enum crawler_run_type,

        void *c, const int sfd, unsigned int remaining);

int lru_crawler_start(uint8_t *ids, uint32_t remaining,

                             const enum crawler_run_type type, void *data,

                             void *c, const int sfd);

void lru_crawler_pause(void);

void lru_crawler_resume(void);

#endif