| 1 | /* |
| 2 | * SPDX-License-Identifier: MIT |
| 3 | * |
| 4 | * Copyright (C) 2020 Mathieu Desnoyers <mathieu.desnoyers@efficios.com> |
| 5 | * |
| 6 | * LTTng Counters API |
| 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" |
| 15 | #include "ust-helper.h" |
| 16 | |
| 17 | /* max_nr_elem is for each dimension. */ |
| 18 | LTTNG_HIDDEN |
| 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); |
| 27 | LTTNG_HIDDEN |
| 28 | void lttng_counter_destroy(struct lib_counter *counter); |
| 29 | |
| 30 | LTTNG_HIDDEN |
| 31 | int lttng_counter_set_global_shm(struct lib_counter *counter, int fd); |
| 32 | LTTNG_HIDDEN |
| 33 | int lttng_counter_set_cpu_shm(struct lib_counter *counter, int cpu, int fd); |
| 34 | |
| 35 | LTTNG_HIDDEN |
| 36 | int lttng_counter_get_global_shm(struct lib_counter *counter, int *fd, size_t *len); |
| 37 | LTTNG_HIDDEN |
| 38 | int lttng_counter_get_cpu_shm(struct lib_counter *counter, int cpu, int *fd, size_t *len); |
| 39 | |
| 40 | LTTNG_HIDDEN |
| 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); |
| 46 | LTTNG_HIDDEN |
| 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); |
| 52 | LTTNG_HIDDEN |
| 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 */ |