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#define HOT_LRU 0
#define WARM_LRU 64
#define COLD_LRU 128
#define TEMP_LRU 192
#define CLEAR_LRU(id) (id & ~(3<<6))
/* See items.c */
uint64_t get_cas_id(void);
/*@null@*/
item *do_item_alloc(char *key, const size_t nkey, const unsigned int flags, const rel_time_t exptime, const int nbytes);
void item_free(item *it);
bool item_size_ok(const size_t nkey, const int flags, const int nbytes);
int do_item_link(item *it, const uint32_t hv); /** may fail if transgresses limits */
void do_item_unlink(item *it, const uint32_t hv);
void do_item_unlink_nolock(item *it, const uint32_t hv);
void do_item_remove(item *it);
void do_item_update(item *it); /** update LRU time to current and reposition */
void do_item_update_nolock(item *it);
int do_item_replace(item *it, item *new_it, const uint32_t hv);
int item_is_flushed(item *it);
void do_item_linktail_q(item *it);
void do_item_unlinktail_q(item *it);
item *do_item_crawl_q(item *it);
/*@null@*/
char *item_cachedump(const unsigned int slabs_clsid, const unsigned int limit, unsigned int *bytes);
void item_stats(ADD_STAT add_stats, void *c);
void do_item_stats_add_crawl(const int i, const uint64_t reclaimed,
const uint64_t unfetched, const uint64_t checked);
void item_stats_totals(ADD_STAT add_stats, void *c);
/*@null@*/
void item_stats_sizes(ADD_STAT add_stats, void *c);
void item_stats_sizes_init(void);
void item_stats_sizes_enable(ADD_STAT add_stats, void *c);
void item_stats_sizes_disable(ADD_STAT add_stats, void *c);
void item_stats_sizes_add(item *it);
void item_stats_sizes_remove(item *it);
bool item_stats_sizes_status(void);
item *do_item_get(const char *key, const size_t nkey, const uint32_t hv, conn *c, const bool do_update);
item *do_item_touch(const char *key, const size_t nkey, uint32_t exptime, const uint32_t hv, conn *c);
void item_stats_reset(void);
extern pthread_mutex_t lru_locks[POWER_LARGEST];
int start_lru_maintainer_thread(void);
int stop_lru_maintainer_thread(void);
int init_lru_maintainer(void);
void lru_maintainer_pause(void);
void lru_maintainer_resume(void);
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