projects / lttng-ust.git / blame
| Commit | Line | Data |
|---|---|---|
| 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 Internal Header |
| ebabbf58 MD |
7 | */ |
| 8 | ||
| 9 | #ifndef _LTTNG_COUNTER_INTERNAL_H | |
| 10 | #define _LTTNG_COUNTER_INTERNAL_H | |
| 11 | ||
| 12 | #include <stdint.h> | |
| 13 | #include <lttng/ust-config.h> | |
| 14 | #include <urcu/compiler.h> | |
| 15 | #include "counter-types.h" | |
| 16 | ||
| 17 | static inline int lttng_counter_validate_indexes(const struct lib_counter_config *config, | |
| 18 | struct lib_counter *counter, | |
| 19 | const size_t *dimension_indexes) | |
| 20 | { | |
| 21 | size_t nr_dimensions = counter->nr_dimensions, i; | |
| 22 | ||
| 23 | for (i = 0; i < nr_dimensions; i++) { | |
| 24 | if (caa_unlikely(dimension_indexes[i] >= counter->dimensions[i].max_nr_elem)) | |
| 25 | return -EOVERFLOW; | |
| 26 | } | |
| 27 | return 0; | |
| 28 | } | |
| 29 | ||
| 30 | ||
| 31 | static inline size_t lttng_counter_get_index(const struct lib_counter_config *config, | |
| 32 | struct lib_counter *counter, | |
| 33 | const size_t *dimension_indexes) | |
| 34 | { | |
| 35 | size_t nr_dimensions = counter->nr_dimensions, i; | |
| 36 | size_t index = 0; | |
| 37 | ||
| 38 | for (i = 0; i < nr_dimensions; i++) { | |
| 39 | struct lib_counter_dimension *dimension = &counter->dimensions[i]; | |
| 40 | const size_t *dimension_index = &dimension_indexes[i]; | |
| 41 | ||
| 42 | index += *dimension_index * dimension->stride; | |
| 43 | } | |
| 44 | return index; | |
| 45 | } | |
| 46 | ||
| 47 | #endif /* _LTTNG_COUNTER_INTERNAL_H */ |