Line data    Source code

       1             : /*
       2             :  * Copyright (c) 2015 Cisco and/or its affiliates.
       3             :  * Licensed under the Apache License, Version 2.0 (the "License");
       4             :  * you may not use this file except in compliance with the License.
       5             :  * You may obtain a copy of the License at:
       6             :  *
       7             :  *     http://www.apache.org/licenses/LICENSE-2.0
       8             :  *
       9             :  * Unless required by applicable law or agreed to in writing, software
      10             :  * distributed under the License is distributed on an "AS IS" BASIS,
      11             :  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
      12             :  * See the License for the specific language governing permissions and
      13             :  * limitations under the License.
      14             :  */
      15             : /*
      16             :  * counter.c: simple and packet/byte counters
      17             :  *
      18             :  * Copyright (c) 2008 Eliot Dresselhaus
      19             :  *
      20             :  * Permission is hereby granted, free of charge, to any person obtaining
      21             :  * a copy of this software and associated documentation files (the
      22             :  * "Software"), to deal in the Software without restriction, including
      23             :  * without limitation the rights to use, copy, modify, merge, publish,
      24             :  * distribute, sublicense, and/or sell copies of the Software, and to
      25             :  * permit persons to whom the Software is furnished to do so, subject to
      26             :  * the following conditions:
      27             :  *
      28             :  * The above copyright notice and this permission notice shall be
      29             :  * included in all copies or substantial portions of the Software.
      30             :  *
      31             :  *  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
      32             :  *  EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
      33             :  *  MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
      34             :  *  NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
      35             :  *  LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
      36             :  *  OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
      37             :  *  WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
      38             :  */
      39             : 
      40             : #include <vlib/vlib.h>
      41             : #include <vlib/stats/stats.h>
      42             : 
      43             : void
      44       10664 : vlib_clear_simple_counters (vlib_simple_counter_main_t * cm)
      45             : {
      46             :   counter_t *my_counters;
      47             :   uword i, j;
      48             : 
      49       21337 :   for (i = 0; i < vec_len (cm->counters); i++)
      50             :     {
      51       10673 :       my_counters = cm->counters[i];
      52             : 
      53      122764 :       for (j = 0; j < vec_len (my_counters); j++)
      54             :         {
      55      112091 :           my_counters[j] = 0;
      56             :         }
      57             :     }
      58       10664 : }
      59             : 
      60             : void
      61        3969 : vlib_clear_combined_counters (vlib_combined_counter_main_t * cm)
      62             : {
      63             :   vlib_counter_t *my_counters;
      64             :   uword i, j;
      65             : 
      66        7806 :   for (i = 0; i < vec_len (cm->counters); i++)
      67             :     {
      68        3837 :       my_counters = cm->counters[i];
      69             : 
      70       57296 :       for (j = 0; j < vec_len (my_counters); j++)
      71             :         {
      72       53459 :           my_counters[j].packets = 0;
      73       53459 :           my_counters[j].bytes = 0;
      74             :         }
      75             :     }
      76        3969 : }
      77             : 
      78             : void
      79      324881 : vlib_validate_simple_counter (vlib_simple_counter_main_t * cm, u32 index)
      80             : {
      81      324881 :   vlib_thread_main_t *tm = vlib_get_thread_main ();
      82      324881 :   char *name = cm->stat_segment_name ? cm->stat_segment_name : cm->name;
      83             : 
      84      324881 :   if (name == 0)
      85             :     {
      86         575 :       if (cm->counters == 0)
      87         575 :         cm->stats_entry_index = ~0;
      88         575 :       vec_validate (cm->counters, tm->n_vlib_mains - 1);
      89        1205 :       for (int i = 0; i < tm->n_vlib_mains; i++)
      90         630 :         vec_validate_aligned (cm->counters[i], index, CLIB_CACHE_LINE_BYTES);
      91         575 :       return;
      92             :     }
      93             : 
      94      324306 :   if (cm->counters == 0)
      95       53885 :     cm->stats_entry_index = vlib_stats_add_counter_vector ("%s", name);
      96             : 
      97      324306 :   vlib_stats_validate (cm->stats_entry_index, tm->n_vlib_mains - 1, index);
      98      324306 :   cm->counters = vlib_stats_get_entry_data_pointer (cm->stats_entry_index);
      99             : }
     100             : 
     101             : void
     102           1 : vlib_free_simple_counter (vlib_simple_counter_main_t * cm)
     103             : {
     104           1 :   if (cm->stats_entry_index == ~0)
     105             :     {
     106           0 :       for (int i = 0; i < vec_len (cm->counters); i++)
     107           0 :         vec_free (cm->counters[i]);
     108           0 :       vec_free (cm->counters);
     109             :     }
     110             :   else
     111             :     {
     112           1 :       vlib_stats_remove_entry (cm->stats_entry_index);
     113           1 :       cm->counters = NULL;
     114             :     }
     115           1 : }
     116             : 
     117             : void
     118      224840 : vlib_validate_combined_counter (vlib_combined_counter_main_t * cm, u32 index)
     119             : {
     120      224840 :   vlib_thread_main_t *tm = vlib_get_thread_main ();
     121      224840 :   char *name = cm->stat_segment_name ? cm->stat_segment_name : cm->name;
     122             : 
     123      224840 :   if (name == 0)
     124             :     {
     125         165 :       if (cm->counters == 0)
     126          34 :         cm->stats_entry_index = ~0;
     127         165 :       vec_validate (cm->counters, tm->n_vlib_mains - 1);
     128         330 :       for (int i = 0; i < tm->n_vlib_mains; i++)
     129         165 :         vec_validate_aligned (cm->counters[i], index, CLIB_CACHE_LINE_BYTES);
     130         165 :       return;
     131             :     }
     132             : 
     133      224675 :   if (cm->counters == 0)
     134        7953 :     cm->stats_entry_index = vlib_stats_add_counter_pair_vector ("%s", name);
     135             : 
     136      224675 :   vlib_stats_validate (cm->stats_entry_index, tm->n_vlib_mains - 1, index);
     137      224675 :   cm->counters = vlib_stats_get_entry_data_pointer (cm->stats_entry_index);
     138             : }
     139             : 
     140             : int
     141      100811 :   vlib_validate_combined_counter_will_expand
     142             :   (vlib_combined_counter_main_t * cm, u32 index)
     143             : {
     144      100811 :   vlib_thread_main_t *tm = vlib_get_thread_main ();
     145             :   int i;
     146      100811 :   void *oldheap = vlib_stats_set_heap ();
     147             : 
     148             :   /* Possibly once in recorded history */
     149      100811 :   if (PREDICT_FALSE (vec_len (cm->counters) == 0))
     150             :     {
     151           0 :       clib_mem_set_heap (oldheap);
     152           0 :       return 1;
     153             :     }
     154             : 
     155      203375 :   for (i = 0; i < tm->n_vlib_mains; i++)
     156             :     {
     157             :       /* Trivially OK, and proves that index >= vec_len(...) */
     158      106989 :       if (index < vec_len (cm->counters[i]))
     159       50804 :         continue;
     160       56185 :       if (vec_resize_will_expand (cm->counters[i],
     161             :                                   index - vec_len (cm->counters[i]) +
     162             :                                     1 /* length_increment */))
     163             :         {
     164        4425 :           clib_mem_set_heap (oldheap);
     165        4425 :           return 1;
     166             :         }
     167             :     }
     168       96386 :   clib_mem_set_heap (oldheap);
     169       96386 :   return 0;
     170             : }
     171             : 
     172             : void
     173           1 : vlib_free_combined_counter (vlib_combined_counter_main_t * cm)
     174             : {
     175           1 :   if (cm->stats_entry_index == ~0)
     176             :     {
     177           0 :       for (int i = 0; i < vec_len (cm->counters); i++)
     178           0 :         vec_free (cm->counters[i]);
     179           0 :       vec_free (cm->counters);
     180             :     }
     181             :   else
     182             :     {
     183           1 :       vlib_stats_remove_entry (cm->stats_entry_index);
     184           1 :       cm->counters = NULL;
     185             :     }
     186           1 : }
     187             : 
     188             : u32
     189          27 : vlib_combined_counter_n_counters (const vlib_combined_counter_main_t * cm)
     190             : {
     191          27 :   ASSERT (cm->counters);
     192          27 :   return (vec_len (cm->counters[0]));
     193             : }
     194             : 
     195             : u32
     196      819532 : vlib_simple_counter_n_counters (const vlib_simple_counter_main_t * cm)
     197             : {
     198      819532 :   ASSERT (cm->counters);
     199      819532 :   return (vec_len (cm->counters[0]));
     200             : }
     201             : 
     202             : /*
     203             :  * fd.io coding-style-patch-verification: ON
     204             :  *
     205             :  * Local Variables:
     206             :  * eval: (c-set-style "gnu")
     207             :  * End:
     208             :  */