| 1 | #include <stdio.h> |
| 2 | #include <stdint.h> |
| 3 | |
| 4 | #include <lttng/lttng.h> |
| 5 | #include <lttng/handle.h> |
| 6 | #include <lttng/map.h> |
| 7 | #include <lttng/map-query.h> |
| 8 | |
| 9 | int main() { |
| 10 | int ret; |
| 11 | enum lttng_map_query_status query_status; |
| 12 | enum lttng_error_code ret_code; |
| 13 | unsigned int map_count, list_count; |
| 14 | enum lttng_map_status map_status; |
| 15 | struct lttng_map_content *map_content = NULL; |
| 16 | struct lttng_map_list *map_list = NULL; |
| 17 | const struct lttng_map *map = NULL; |
| 18 | struct lttng_domain *domains = NULL; |
| 19 | const struct lttng_map_key_value_pair_list *kv_list; |
| 20 | const struct lttng_map_key_value_pair *kv_pair; |
| 21 | const char *key; |
| 22 | int64_t value; |
| 23 | int nb_domains; |
| 24 | |
| 25 | |
| 26 | nb_domains = lttng_list_domains("mysession", &domains); |
| 27 | |
| 28 | struct lttng_handle *handle = lttng_create_handle("mysession", &domains[0]); |
| 29 | |
| 30 | struct lttng_map_query *map_query = lttng_map_query_create( |
| 31 | LTTNG_MAP_QUERY_CONFIG_CPU_SUBSET, |
| 32 | LTTNG_MAP_QUERY_CONFIG_BUFFER_UST_UID_ALL, |
| 33 | LTTNG_MAP_QUERY_CONFIG_APP_BITNESS_ALL); |
| 34 | |
| 35 | if (!map_query) { |
| 36 | printf("Error creating the map query\n"); |
| 37 | ret = -1; |
| 38 | goto end; |
| 39 | } |
| 40 | |
| 41 | query_status = lttng_map_query_add_cpu(map_query, 0); |
| 42 | if (query_status != LTTNG_MAP_QUERY_STATUS_OK) { |
| 43 | printf("Error setting the targeted cpu\n"); |
| 44 | ret = -1; |
| 45 | goto end; |
| 46 | } |
| 47 | |
| 48 | query_status = lttng_map_query_add_key_filter(map_query, |
| 49 | "total number of hits"); |
| 50 | if (query_status != LTTNG_MAP_QUERY_STATUS_OK) { |
| 51 | printf("Error setting the targeted key\n"); |
| 52 | ret = -1; |
| 53 | goto end; |
| 54 | } |
| 55 | |
| 56 | ret_code = lttng_list_maps(handle, &map_list); |
| 57 | if (ret_code != LTTNG_OK) { |
| 58 | printf("Error getting list of all maps\n"); |
| 59 | ret = -1; |
| 60 | goto end; |
| 61 | } |
| 62 | |
| 63 | map_status = lttng_map_list_get_count(map_list, &map_count); |
| 64 | if (map_status != LTTNG_MAP_STATUS_OK) { |
| 65 | printf("Error getting the number of maps\n"); |
| 66 | ret = -1; |
| 67 | goto end; |
| 68 | } |
| 69 | |
| 70 | if (map_count < 1) { |
| 71 | printf("Error: expecting at least 1 map.\n"); |
| 72 | ret = -1; |
| 73 | goto end; |
| 74 | } |
| 75 | |
| 76 | map = lttng_map_list_get_at_index(map_list, 0); |
| 77 | if (!map) { |
| 78 | printf("Error getting map at index 0\n"); |
| 79 | ret = -1; |
| 80 | goto end; |
| 81 | } |
| 82 | |
| 83 | ret_code = lttng_list_map_content(handle, map, map_query, &map_content); |
| 84 | if (ret_code != LTTNG_OK) { |
| 85 | printf("Error executing the query on map\n"); |
| 86 | ret = -1; |
| 87 | goto end; |
| 88 | } |
| 89 | |
| 90 | map_status = lttng_map_content_get_count(map_content, &list_count); |
| 91 | if (map_status != LTTNG_MAP_STATUS_OK) { |
| 92 | printf("Error getting the number of key value pair list\n"); |
| 93 | ret = -1; |
| 94 | goto end; |
| 95 | } |
| 96 | |
| 97 | if (list_count < 1) { |
| 98 | printf("Error: expecting at least 1 list.\n"); |
| 99 | ret = -1; |
| 100 | goto end; |
| 101 | } |
| 102 | |
| 103 | kv_list = lttng_map_content_get_at_index(map_content, 0); |
| 104 | if (!kv_list) { |
| 105 | printf("Error getting key value pair list at index 0\n"); |
| 106 | ret = -1; |
| 107 | goto end; |
| 108 | } |
| 109 | |
| 110 | kv_pair = lttng_map_key_value_pair_list_get_at_index(kv_list, 0); |
| 111 | if (!kv_pair) { |
| 112 | printf("Error getting key value pair at index 0\n"); |
| 113 | ret = -1; |
| 114 | goto end; |
| 115 | } |
| 116 | |
| 117 | lttng_map_key_value_pair_get_key(kv_pair, &key); |
| 118 | lttng_map_key_value_pair_get_value(kv_pair, &value); |
| 119 | |
| 120 | printf("Key: \"%s\", value: %"PRId64"\n", key, value); |
| 121 | |
| 122 | ret = 0; |
| 123 | end: |
| 124 | return ret; |
| 125 | } |