| 1 | // SPDX-License-Identifier: GPL-3.0-or-later |
| 2 | |
| 3 | #ifndef NETDATA_PAGECACHE_H |
| 4 | #define NETDATA_PAGECACHE_H |
| 5 | |
| 6 | #include "rrdengine.h" |
| 7 | |
| 8 | extern struct mrg *main_mrg; |
| 9 | extern struct pgc *main_cache; |
| 10 | extern struct pgc *open_cache; |
| 11 | extern struct pgc *extent_cache; |
| 12 | |
| 13 | /* Forward declarations */ |
| 14 | struct rrdengine_instance; |
| 15 | |
| 16 | #define INVALID_TIME (0) |
| 17 | |
| 18 | extern struct rrdeng_cache_efficiency_stats rrdeng_cache_efficiency_stats; |
| 19 | |
| 20 | struct page_descr_with_data { |
| 21 | UUIDMAP_ID uuid_id; |
| 22 | Word_t metric_id; |
| 23 | usec_t start_time_ut; |
| 24 | usec_t end_time_ut; |
| 25 | uint8_t type; |
| 26 | uint32_t update_every_s; |
| 27 | uint32_t page_length; |
| 28 | struct pgd *pgd; |
| 29 | |
| 30 | struct { |
| 31 | struct page_descr_with_data *prev; |
| 32 | struct page_descr_with_data *next; |
| 33 | } link; |
| 34 | }; |
| 35 | |
| 36 | struct pg_alignment { |
| 37 | uint32_t refcount; |
| 38 | }; |
| 39 | |
| 40 | struct rrdeng_query_handle; |
| 41 | struct page_details_control; |
| 42 | |
| 43 | void rrdeng_prep_wait(struct page_details_control *pdc); |
| 44 | void rrdeng_prep_query(struct page_details_control *pdc, bool worker); |
| 45 | void pg_cache_preload(struct rrdeng_query_handle *handle); |
| 46 | struct pgc_page *pg_cache_lookup_next(struct rrdengine_instance *ctx, struct page_details_control *pdc, time_t now_s, uint32_t last_update_every_s, size_t *entries); |
| 47 | void pgc_and_mrg_initialize(void); |
| 48 | |
| 49 | void pgc_open_add_hot_page( |
| 50 | Word_t section, |
| 51 | Word_t metric_id, |
| 52 | time_t start_time_s, |
| 53 | time_t end_time_s, |
| 54 | uint32_t update_every_s, |
| 55 | struct rrdengine_datafile *datafile, |
| 56 | uint64_t extent_offset, |
| 57 | unsigned extent_size); |
| 58 | |
| 59 | #endif /* NETDATA_PAGECACHE_H */ |