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ebabbf58 | 1 | /* |
c0c0989a | 2 | * SPDX-License-Identifier: MIT |
ebabbf58 MD |
3 | * |
4 | * Copyright (C) 2020 Mathieu Desnoyers <mathieu.desnoyers@efficios.com> | |
5 | * | |
c0c0989a | 6 | * LTTng Counters API |
ebabbf58 MD |
7 | */ |
8 | ||
9 | #ifndef _LTTNG_COUNTER_H | |
10 | #define _LTTNG_COUNTER_H | |
11 | ||
12 | #include <stdint.h> | |
13 | #include <lttng/ust-config.h> | |
14 | #include "counter-types.h" | |
864a1eda | 15 | #include "ust-helper.h" |
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16 | |
17 | /* max_nr_elem is for each dimension. */ | |
3d5db36a | 18 | LTTNG_HIDDEN |
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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 | int global_counter_fd, | |
24 | int nr_counter_cpu_fds, | |
25 | const int *counter_cpu_fds, | |
26 | bool is_daemon); | |
3d5db36a | 27 | LTTNG_HIDDEN |
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28 | void lttng_counter_destroy(struct lib_counter *counter); |
29 | ||
3d5db36a | 30 | LTTNG_HIDDEN |
ebabbf58 | 31 | int lttng_counter_set_global_shm(struct lib_counter *counter, int fd); |
3d5db36a | 32 | LTTNG_HIDDEN |
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33 | int lttng_counter_set_cpu_shm(struct lib_counter *counter, int cpu, int fd); |
34 | ||
3d5db36a | 35 | LTTNG_HIDDEN |
ebabbf58 | 36 | int lttng_counter_get_global_shm(struct lib_counter *counter, int *fd, size_t *len); |
3d5db36a | 37 | LTTNG_HIDDEN |
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38 | int lttng_counter_get_cpu_shm(struct lib_counter *counter, int cpu, int *fd, size_t *len); |
39 | ||
3d5db36a | 40 | LTTNG_HIDDEN |
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41 | int lttng_counter_read(const struct lib_counter_config *config, |
42 | struct lib_counter *counter, | |
43 | const size_t *dimension_indexes, | |
44 | int cpu, int64_t *value, | |
45 | bool *overflow, bool *underflow); | |
3d5db36a | 46 | LTTNG_HIDDEN |
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47 | int lttng_counter_aggregate(const struct lib_counter_config *config, |
48 | struct lib_counter *counter, | |
49 | const size_t *dimension_indexes, | |
50 | int64_t *value, | |
51 | bool *overflow, bool *underflow); | |
3d5db36a | 52 | LTTNG_HIDDEN |
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53 | int lttng_counter_clear(const struct lib_counter_config *config, |
54 | struct lib_counter *counter, | |
55 | const size_t *dimension_indexes); | |
56 | ||
57 | #endif /* _LTTNG_COUNTER_H */ |