projects / lttng-tools.git / blame
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| f8cc2132 MD |
1 | #ifndef _LTT_TRACKER_H |
| 2 | #define _LTT_TRACKER_H | |
| 3 | ||
| 4 | /* | |
| 5 | * Copyright (C) 2018 - Mathieu Desnoyers <mathieu.desnoyers@efficios.com> | |
| 6 | * | |
| 7 | * This program is free software; you can redistribute it and/or modify | |
| 8 | * it under the terms of the GNU General Public License, version 2 only, | |
| 9 | * as published by the Free Software Foundation. | |
| 10 | * | |
| 11 | * This program is distributed in the hope that it will be useful, | |
| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 14 | * GNU General Public License for more details. | |
| 15 | * | |
| 16 | * You should have received a copy of the GNU General Public License along | |
| 17 | * with this program; if not, write to the Free Software Foundation, Inc., | |
| 18 | * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. | |
| 19 | */ | |
| 20 | ||
| 21 | #include <lttng/session.h> | |
| 22 | #include <urcu/rculfhash.h> | |
| 23 | #include <urcu/list.h> | |
| 24 | ||
| 25 | enum lttng_tracker_list_state { | |
| 26 | LTTNG_TRACK_ALL, | |
| 27 | LTTNG_TRACK_NONE, | |
| 28 | LTTNG_TRACK_LIST, | |
| 29 | }; | |
| 30 | ||
| 31 | /* Tracker ID */ | |
| 32 | struct lttng_tracker_list_node { | |
| 33 | struct lttng_tracker_id id; | |
| 34 | ||
| 35 | struct cds_list_head list_node; | |
| 36 | struct cds_lfht_node ht_node; | |
| 37 | struct rcu_head rcu_head; | |
| 38 | }; | |
| 39 | ||
| 40 | struct lttng_tracker_list { | |
| 41 | struct cds_list_head list_head; | |
| 42 | /* Hash table for O(1) removal lookup. */ | |
| 43 | struct cds_lfht *ht; | |
| 44 | enum lttng_tracker_list_state state; | |
| 45 | }; | |
| 46 | ||
| 47 | struct lttng_tracker_list *lttng_tracker_list_create(void); | |
| 48 | void lttng_tracker_list_destroy(struct lttng_tracker_list *tracker_list); | |
| 49 | ||
| 50 | int lttng_tracker_list_add(struct lttng_tracker_list *tracker_list, | |
| 51 | const struct lttng_tracker_id *id); | |
| 52 | int lttng_tracker_list_remove(struct lttng_tracker_list *tracker_list, | |
| 53 | const struct lttng_tracker_id *id); | |
| 54 | ||
| 55 | int lttng_tracker_id_lookup_string(enum lttng_tracker_type tracker_type, | |
| 56 | const struct lttng_tracker_id *id, | |
| 57 | int *result); | |
| 58 | ssize_t lttng_tracker_id_get_list(struct lttng_tracker_list *tracker_list, | |
| 59 | struct lttng_tracker_id **_ids); | |
| 60 | int lttng_tracker_id_set_list(struct lttng_tracker_list *tracker_list, | |
| 61 | struct lttng_tracker_id *_ids, | |
| 62 | size_t count); | |
| 63 | ||
| 64 | #endif /* _LTT_TRACKER_H */ |