1 /* SPDX-License-Identifier: (GPL-2.0-only or LGPL-2.1-only)
7 * Copyright (C) 2020 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
10 #ifndef _LTTNG_COUNTER_H
11 #define _LTTNG_COUNTER_H
13 #include <linux/types.h>
14 #include <linux/percpu.h>
15 #include <counter/config.h>
16 #include <counter/counter-types.h>
18 /* max_nr_elem is for each dimension. */
19 struct lib_counter
*lttng_counter_create(const struct lib_counter_config
*config
,
21 const size_t *max_nr_elem
,
22 int64_t global_sum_step
);
23 void lttng_counter_destroy(struct lib_counter
*counter
);
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 */
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
,
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
);
46 #endif /* _LTTNG_COUNTER_H */
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