src/StatCounters.h

   1 /*
   2  * Copyright (C) 1996-2025 The Squid Software Foundation and contributors
   3  *
   4  * Squid software is distributed under GPLv2+ license and includes
   5  * contributions from numerous individuals and organizations.
   6  * Please see the COPYING and CONTRIBUTORS files for details.
   7  */
   8
   9 #ifndef SQUID_SRC_STATCOUNTERS_H
  10 #define SQUID_SRC_STATCOUNTERS_H
  11
  12 #include "base/ByteCounter.h"
  13 #include "comm/Incoming.h"
  14 #include "StatHist.h"
  15
  16 #if USE_CACHE_DIGESTS
  17 /** statistics for cache digests and other hit "predictors" */
  18 class CacheDigestGuessStats
  19 {
  20 public:
  21     int trueHits = 0;
  22     int falseHits = 0;
  23     int trueMisses = 0;
  24     int falseMisses = 0;
  25 };
  26 #endif
  27
  28 /** General collection of process-wide statistics.
  29  *
  30  * \note if you add a field to StatCounters which requires any non-trivial
  31  *  initialization or copy you MUST sync statCountersInitSpecial()
  32  */
  33 class StatCounters
  34 {
  35 public:
  36     StatCounters() : timestamp(current_time) {}
  37
  38     struct {
  39         int clients = 0;
  40         int requests = 0;
  41         int hits = 0;
  42         int mem_hits = 0;
  43         int disk_hits = 0;
  44         int errors = 0;
  45         ByteCounter kbytes_in;
  46         ByteCounter kbytes_out;
  47         ByteCounter hit_kbytes_out;
  48         StatHist missSvcTime;
  49         StatHist nearMissSvcTime;
  50         StatHist nearHitSvcTime;
  51         StatHist hitSvcTime;
  52         StatHist allSvcTime;
  53     } client_http;
  54
  55     struct {
  56
  57         struct {
  58             int requests = 0;
  59             int errors = 0;
  60             ByteCounter kbytes_in;
  61             ByteCounter kbytes_out;
  62         } all, http, ftp, other;
  63     } server;
  64
  65     struct {
  66         int pkts_sent = 0;
  67         int queries_sent = 0;
  68         int replies_sent = 0;
  69         int pkts_recv = 0;
  70         int queries_recv = 0;
  71         int replies_recv = 0;
  72         int hits_sent = 0;
  73         int hits_recv = 0;
  74         int replies_queued = 0;
  75         int replies_dropped = 0;
  76         ByteCounter kbytes_sent;
  77         ByteCounter q_kbytes_sent;
  78         ByteCounter r_kbytes_sent;
  79         ByteCounter kbytes_recv;
  80         ByteCounter q_kbytes_recv;
  81         ByteCounter r_kbytes_recv;
  82         StatHist querySvcTime;
  83         StatHist replySvcTime;
  84         int query_timeouts = 0;
  85         int times_used = 0;
  86     } icp;
  87
  88     struct {
  89         int pkts_sent = 0;
  90         int pkts_recv = 0;
  91     } htcp;
  92
  93     struct {
  94         int requests = 0;
  95     } unlink;
  96
  97     struct {
  98         StatHist svcTime;
  99     } dns;
 100
 101     struct {
 102         int times_used = 0;
 103         ByteCounter kbytes_sent;
 104         ByteCounter kbytes_recv;
 105         ByteCounter memory;
 106         int msgs_sent = 0;
 107         int msgs_recv = 0;
 108 #if USE_CACHE_DIGESTS
 109         CacheDigestGuessStats guess;
 110 #endif
 111         StatHist on_xition_count;
 112     } cd;
 113
 114     struct {
 115         int times_used = 0;
 116     } netdb;
 117     int page_faults = 0;
 118     unsigned long int select_loops = 0;
 119     int select_fds = 0;
 120     double select_time = 0.0;
 121     double cputime = 0.0;
 122
 123     struct timeval timestamp;
 124 #if USE_POLL || USE_SELECT
 125     Comm::Incoming comm_dns;
 126     Comm::Incoming comm_tcp;
 127     Comm::Incoming comm_udp;
 128 #endif
 129     StatHist select_fds_hist;
 130
 131     struct {
 132         struct {
 133             int opens = 0;
 134             int closes = 0;
 135             int reads = 0;
 136             int writes = 0;
 137             int seeks = 0;
 138             int unlinks = 0;
 139         } disk;
 140
 141         struct {
 142             int accepts = 0;
 143             int sockets = 0;
 144             int connects = 0;
 145             int binds = 0;
 146             int closes = 0;
 147             int reads = 0;
 148             int writes = 0;
 149             int recvfroms = 0;
 150             int sendtos = 0;
 151         } sock;
 152         int selects = 0;
 153     } syscalls;
 154     int aborted_requests = 0;
 155
 156     struct {
 157         int files_cleaned = 0;
 158         int outs = 0;
 159         int ins = 0;
 160     } swap;
 161
 162     struct {
 163         uint64_t attempts = 0;
 164         uint64_t refusalsDueToLocking = 0;
 165         uint64_t refusalsDueToZeroSize = 0;
 166         uint64_t refusalsDueToTimeLimit = 0;
 167         uint64_t failures = 0;
 168     } hitValidation;
 169
 170 };
 171
 172 extern StatCounters statCounter;
 173
 174 #endif /* SQUID_SRC_STATCOUNTERS_H */
 175