6 * Copyright (C) 2020 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
8 * Permission is hereby granted, free of charge, to any person obtaining a copy
9 * of this software and associated documentation files (the "Software"), to deal
10 * in the Software without restriction, including without limitation the rights
11 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
12 * copies of the Software, and to permit persons to whom the Software is
13 * furnished to do so, subject to the following conditions:
15 * The above copyright notice and this permission notice shall be included in
16 * all copies or substantial portions of the Software.
18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
19 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
20 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
21 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
22 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
23 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
27 #ifndef _LTTNG_COUNTER_H
28 #define _LTTNG_COUNTER_H
31 #include <lttng/ust-config.h>
32 #include "counter-types.h"
35 /* max_nr_elem is for each dimension. */
37 struct lib_counter
*lttng_counter_create(const struct lib_counter_config
*config
,
39 const size_t *max_nr_elem
,
40 int64_t global_sum_step
,
41 int global_counter_fd
,
42 int nr_counter_cpu_fds
,
43 const int *counter_cpu_fds
,
46 void lttng_counter_destroy(struct lib_counter
*counter
);
49 int lttng_counter_set_global_shm(struct lib_counter
*counter
, int fd
);
51 int lttng_counter_set_cpu_shm(struct lib_counter
*counter
, int cpu
, int fd
);
54 int lttng_counter_get_global_shm(struct lib_counter
*counter
, int *fd
, size_t *len
);
56 int lttng_counter_get_cpu_shm(struct lib_counter
*counter
, int cpu
, int *fd
, size_t *len
);
59 int lttng_counter_read(const struct lib_counter_config
*config
,
60 struct lib_counter
*counter
,
61 const size_t *dimension_indexes
,
62 int cpu
, int64_t *value
,
63 bool *overflow
, bool *underflow
);
65 int lttng_counter_aggregate(const struct lib_counter_config
*config
,
66 struct lib_counter
*counter
,
67 const size_t *dimension_indexes
,
69 bool *overflow
, bool *underflow
);
71 int lttng_counter_clear(const struct lib_counter_config
*config
,
72 struct lib_counter
*counter
,
73 const size_t *dimension_indexes
);
75 #endif /* _LTTNG_COUNTER_H */
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