include/lttng/counter-config.h

   1 /*
   2  * lttng/counter-config.h
   3  *
   4  * LTTng Counters Configuration
   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_CONFIG_H
  28 #define _LTTNG_COUNTER_CONFIG_H
  29
  30 #include <stdint.h>
  31
  32 enum lib_counter_config_alloc {
  33         COUNTER_ALLOC_PER_CPU = (1 << 0),
  34         COUNTER_ALLOC_GLOBAL  = (1 << 1),
  35 };
  36
  37 enum lib_counter_config_sync {
  38         COUNTER_SYNC_PER_CPU,
  39         COUNTER_SYNC_GLOBAL,
  40 };
  41
  42 struct lib_counter_config {
  43         uint32_t alloc; /* enum lib_counter_config_alloc flags */
  44         enum lib_counter_config_sync sync;
  45         enum {
  46                 COUNTER_ARITHMETIC_MODULAR,
  47                 COUNTER_ARITHMETIC_SATURATE,    /* TODO */
  48         } arithmetic;
  49         enum {
  50                 COUNTER_SIZE_8_BIT      = 1,
  51                 COUNTER_SIZE_16_BIT     = 2,
  52                 COUNTER_SIZE_32_BIT     = 4,
  53                 COUNTER_SIZE_64_BIT     = 8,
  54         } counter_size;
  55 };
  56
  57 #endif /* _LTTNG_COUNTER_CONFIG_H */