src/bin/lttng-sessiond/map.h

   1 /*
   2  * Copyright (C) 2020 Francis Deslauriers <francis.deslauriers@efficios.com>
   3  *
   4  * SPDX-License-Identifier: GPL-2.0-only
   5  *
   6  */
   7 #ifndef _LTT_MAP_H
   8 #define _LTT_MAP_H
   9
  10 #include <lttng/map/map.h>
  11 #include <common/kernel-ctl/kernel-ctl.h>
  12 #include "trace-kernel.h"
  13 #include "trace-ust.h"
  14
  15 struct map_kv_ht_entry {
  16         struct lttng_ht_node_str node;
  17         char *key;
  18         int64_t value;
  19         bool has_overflowed;
  20         bool has_underflowed;
  21 };
  22
  23 enum lttng_error_code map_kernel_add(struct ltt_kernel_session *ksession,
  24                 struct lttng_map *map);
  25 enum lttng_error_code map_kernel_enable(struct ltt_kernel_session *ksession,
  26                 struct ltt_kernel_map *kmap);
  27 enum lttng_error_code map_kernel_disable(struct ltt_kernel_session *ksession,
  28                 struct ltt_kernel_map *kmap);
  29
  30 int map_ust_add(struct ltt_ust_session *usession,
  31                 struct lttng_map *map);
  32 int map_ust_enable(struct ltt_ust_session *usess,
  33                 struct ltt_ust_map *umap);
  34 int map_ust_disable(struct ltt_ust_session *usess,
  35                 struct ltt_ust_map *umap);
  36
  37 void map_add_or_increment_map_values(struct lttng_ht *map_values, const char *key,
  38                 int64_t value, bool has_underflowed, bool has_overflowed);
  39
  40 int map_new_content_section(struct lttng_map_content *map_content,
  41                 enum lttng_map_key_value_pair_list_type list_type,
  42                 bool summed_all_cpus, unsigned int identifier,
  43                 int cpu, struct lttng_ht *values);
  44
  45 #endif /* _LTT_MAP_H */