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 Types |
| ebabbf58 MD |
7 | */ |
| 8 | ||
| 9 | #ifndef _LTTNG_COUNTER_TYPES_H | |
| 10 | #define _LTTNG_COUNTER_TYPES_H | |
| 11 | ||
| 12 | #include <stdint.h> | |
| 13 | #include <stddef.h> | |
| 14 | #include <stdbool.h> | |
| 15 | #include <sys/types.h> | |
| 16 | #include <lttng/counter-config.h> | |
| 17 | #include <lttng/ust-config.h> | |
| 18 | #include "shm_types.h" | |
| 19 | ||
| 20 | struct lib_counter_dimension { | |
| 21 | /* | |
| 22 | * Max. number of indexable elements. | |
| 23 | */ | |
| 24 | size_t max_nr_elem; | |
| 25 | /* | |
| 26 | * The stride for a dimension is the multiplication factor which | |
| 27 | * should be applied to its index to take into account other | |
| 28 | * dimensions nested inside. | |
| 29 | */ | |
| 30 | size_t stride; | |
| 31 | }; | |
| 32 | ||
| 33 | struct lib_counter_layout { | |
| 34 | void *counters; | |
| 35 | unsigned long *overflow_bitmap; | |
| 36 | unsigned long *underflow_bitmap; | |
| 37 | int shm_fd; | |
| 38 | size_t shm_len; | |
| 39 | struct lttng_counter_shm_handle handle; | |
| 40 | }; | |
| 41 | ||
| 42 | enum lib_counter_arithmetic { | |
| 43 | LIB_COUNTER_ARITHMETIC_MODULAR, | |
| 44 | LIB_COUNTER_ARITHMETIC_SATURATE, | |
| 45 | }; | |
| 46 | ||
| 47 | struct lib_counter { | |
| 48 | size_t nr_dimensions; | |
| 49 | int64_t allocated_elem; | |
| 50 | struct lib_counter_dimension *dimensions; | |
| 51 | enum lib_counter_arithmetic arithmetic; | |
| 52 | union { | |
| 53 | struct { | |
| 54 | int32_t max, min; | |
| 55 | } limits_32_bit; | |
| 56 | struct { | |
| 57 | int64_t max, min; | |
| 58 | } limits_64_bit; | |
| 59 | } saturation; | |
| 60 | union { | |
| 61 | int8_t s8; | |
| 62 | int16_t s16; | |
| 63 | int32_t s32; | |
| 64 | int64_t s64; | |
| 65 | } global_sum_step; /* 0 if unused */ | |
| 66 | struct lib_counter_config config; | |
| 67 | ||
| 68 | struct lib_counter_layout global_counters; | |
| 69 | struct lib_counter_layout *percpu_counters; | |
| 70 | ||
| 71 | bool is_daemon; | |
| 72 | struct lttng_counter_shm_object_table *object_table; | |
| 73 | }; | |
| 74 | ||
| 75 | #endif /* _LTTNG_COUNTER_TYPES_H */ |