| 1 | /* SPDX-License-Identifier: (GPL-2.0-only or LGPL-2.1-only) |
| 2 | * |
| 3 | * counter/counter.h |
| 4 | * |
| 5 | * LTTng Counters API |
| 6 | * |
| 7 | * Copyright (C) 2020 Mathieu Desnoyers <mathieu.desnoyers@efficios.com> |
| 8 | */ |
| 9 | |
| 10 | #ifndef _LTTNG_COUNTER_H |
| 11 | #define _LTTNG_COUNTER_H |
| 12 | |
| 13 | #include <linux/types.h> |
| 14 | #include <linux/percpu.h> |
| 15 | #include <counter/config.h> |
| 16 | #include <counter/counter-types.h> |
| 17 | |
| 18 | /* max_nr_elem is for each dimension. */ |
| 19 | struct lib_counter *lttng_counter_create(const struct lib_counter_config *config, |
| 20 | size_t nr_dimensions, |
| 21 | const size_t *max_nr_elem, |
| 22 | int64_t global_sum_step); |
| 23 | void lttng_counter_destroy(struct lib_counter *counter); |
| 24 | |
| 25 | int lttng_counter_get_nr_dimensions(const struct lib_counter_config *config, |
| 26 | struct lib_counter *counter, |
| 27 | size_t *nr_dimensions); |
| 28 | int lttng_counter_get_max_nr_elem(const struct lib_counter_config *config, |
| 29 | struct lib_counter *counter, |
| 30 | size_t *max_nr_elem); /* array of size nr_dimensions */ |
| 31 | |
| 32 | int lttng_counter_read(const struct lib_counter_config *config, |
| 33 | struct lib_counter *counter, |
| 34 | const size_t *dimension_indexes, |
| 35 | int cpu, int64_t *value, |
| 36 | bool *overflow, bool *underflow); |
| 37 | int lttng_counter_aggregate(const struct lib_counter_config *config, |
| 38 | struct lib_counter *counter, |
| 39 | const size_t *dimension_indexes, |
| 40 | int64_t *value, |
| 41 | bool *overflow, bool *underflow); |
| 42 | int lttng_counter_clear(const struct lib_counter_config *config, |
| 43 | struct lib_counter *counter, |
| 44 | const size_t *dimension_indexes); |
| 45 | |
| 46 | #endif /* _LTTNG_COUNTER_H */ |