| 1 | /* |
| 2 | * Copyright (C) 2018 Mathieu Desnoyers <mathieu.desnoyers@efficios.com> |
| 3 | * |
| 4 | * SPDX-License-Identifier: GPL-2.0-only |
| 5 | * |
| 6 | */ |
| 7 | |
| 8 | #ifndef _LTT_TRACKER_H |
| 9 | #define _LTT_TRACKER_H |
| 10 | |
| 11 | #include <lttng/tracker.h> |
| 12 | #include <urcu.h> |
| 13 | #include <urcu/list.h> |
| 14 | #include <urcu/rculfhash.h> |
| 15 | |
| 16 | enum lttng_tracker_list_state { |
| 17 | LTTNG_TRACK_ALL, |
| 18 | LTTNG_TRACK_NONE, |
| 19 | LTTNG_TRACK_LIST, |
| 20 | }; |
| 21 | |
| 22 | /* Tracker ID */ |
| 23 | struct lttng_tracker_list_node { |
| 24 | struct lttng_tracker_id *id; |
| 25 | |
| 26 | struct cds_list_head list_node; |
| 27 | struct cds_lfht_node ht_node; |
| 28 | struct rcu_head rcu_head; |
| 29 | }; |
| 30 | |
| 31 | struct lttng_tracker_list { |
| 32 | struct cds_list_head list_head; |
| 33 | /* Hash table for O(1) removal lookup. */ |
| 34 | struct cds_lfht *ht; |
| 35 | enum lttng_tracker_list_state state; |
| 36 | }; |
| 37 | |
| 38 | struct lttng_tracker_list *lttng_tracker_list_create(void); |
| 39 | void lttng_tracker_list_destroy(struct lttng_tracker_list *tracker_list); |
| 40 | |
| 41 | int lttng_tracker_list_add(struct lttng_tracker_list *tracker_list, |
| 42 | const struct lttng_tracker_id *id); |
| 43 | int lttng_tracker_list_remove(struct lttng_tracker_list *tracker_list, |
| 44 | const struct lttng_tracker_id *id); |
| 45 | |
| 46 | int lttng_tracker_id_lookup_string(enum lttng_tracker_type tracker_type, |
| 47 | const struct lttng_tracker_id *id, |
| 48 | int *result); |
| 49 | int lttng_tracker_id_get_list(const struct lttng_tracker_list *tracker_list, |
| 50 | struct lttng_tracker_ids **_ids); |
| 51 | int lttng_tracker_id_set_list(struct lttng_tracker_list *tracker_list, |
| 52 | const struct lttng_tracker_ids *_ids); |
| 53 | |
| 54 | #endif /* _LTT_TRACKER_H */ |