| 1 | /* |
| 2 | * counter/counter-types.h |
| 3 | * |
| 4 | * LTTng Counters Types |
| 5 | * |
| 6 | * Copyright (C) 2020 Mathieu Desnoyers <mathieu.desnoyers@efficios.com> |
| 7 | * |
| 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: |
| 14 | * |
| 15 | * The above copyright notice and this permission notice shall be included in |
| 16 | * all copies or substantial portions of the Software. |
| 17 | * |
| 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 |
| 24 | * SOFTWARE. |
| 25 | */ |
| 26 | |
| 27 | #ifndef _LTTNG_COUNTER_TYPES_H |
| 28 | #define _LTTNG_COUNTER_TYPES_H |
| 29 | |
| 30 | #include <stdint.h> |
| 31 | #include <stddef.h> |
| 32 | #include <stdbool.h> |
| 33 | #include <sys/types.h> |
| 34 | #include <lttng/counter-config.h> |
| 35 | #include <lttng/ust-config.h> |
| 36 | #include "shm_types.h" |
| 37 | |
| 38 | struct lib_counter_dimension { |
| 39 | /* |
| 40 | * Max. number of indexable elements. |
| 41 | */ |
| 42 | size_t max_nr_elem; |
| 43 | /* |
| 44 | * The stride for a dimension is the multiplication factor which |
| 45 | * should be applied to its index to take into account other |
| 46 | * dimensions nested inside. |
| 47 | */ |
| 48 | size_t stride; |
| 49 | }; |
| 50 | |
| 51 | struct lib_counter_layout { |
| 52 | void *counters; |
| 53 | unsigned long *overflow_bitmap; |
| 54 | unsigned long *underflow_bitmap; |
| 55 | int shm_fd; |
| 56 | size_t shm_len; |
| 57 | struct lttng_counter_shm_handle handle; |
| 58 | }; |
| 59 | |
| 60 | enum lib_counter_arithmetic { |
| 61 | LIB_COUNTER_ARITHMETIC_MODULAR, |
| 62 | LIB_COUNTER_ARITHMETIC_SATURATE, |
| 63 | }; |
| 64 | |
| 65 | struct lib_counter { |
| 66 | size_t nr_dimensions; |
| 67 | int64_t allocated_elem; |
| 68 | struct lib_counter_dimension *dimensions; |
| 69 | enum lib_counter_arithmetic arithmetic; |
| 70 | union { |
| 71 | struct { |
| 72 | int32_t max, min; |
| 73 | } limits_32_bit; |
| 74 | struct { |
| 75 | int64_t max, min; |
| 76 | } limits_64_bit; |
| 77 | } saturation; |
| 78 | union { |
| 79 | int8_t s8; |
| 80 | int16_t s16; |
| 81 | int32_t s32; |
| 82 | int64_t s64; |
| 83 | } global_sum_step; /* 0 if unused */ |
| 84 | struct lib_counter_config config; |
| 85 | |
| 86 | struct lib_counter_layout global_counters; |
| 87 | struct lib_counter_layout *percpu_counters; |
| 88 | |
| 89 | bool is_daemon; |
| 90 | struct lttng_counter_shm_object_table *object_table; |
| 91 | }; |
| 92 | |
| 93 | #endif /* _LTTNG_COUNTER_TYPES_H */ |