src/adaptation/icap/History.cc

   1 /*
   2  * Copyright (C) 1996-2019 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 #include "squid.h"
  10 #include "adaptation/icap/History.h"
  11 #include "Debug.h"
  12 #include "globals.h"
  13 #include "SquidTime.h"
  14
  15 Adaptation::Icap::History::History():
  16     req_sz(0),
  17     concurrencyLevel(0)
  18 {
  19     memset(&currentStart, 0, sizeof(currentStart));
  20     memset(&pastTime, 0, sizeof(pastTime));
  21 }
  22
  23 void Adaptation::Icap::History::start(const char *context)
  24 {
  25     if (!concurrencyLevel++)
  26         currentStart = current_time;
  27
  28     debugs(93,4, HERE << "start " << context << " level=" << concurrencyLevel
  29            << " time=" << tvToMsec(pastTime) << ' ' << this);
  30 }
  31
  32 void Adaptation::Icap::History::stop(const char *context)
  33 {
  34     if (!concurrencyLevel) {
  35         debugs(93, DBG_IMPORTANT, HERE << "Internal error: poor history accounting " << this);
  36         return;
  37     }
  38
  39     struct timeval current;
  40     currentTime(current);
  41     debugs(93,4, HERE << "stop " << context << " level=" << concurrencyLevel <<
  42            " time=" << tvToMsec(pastTime) << '+' << tvToMsec(current) << ' ' << this);
  43
  44     if (!--concurrencyLevel)
  45         tvAssignAdd(pastTime, current);
  46 }
  47
  48 void
  49 Adaptation::Icap::History::processingTime(timeval &total) const
  50 {
  51     currentTime(total);
  52     tvAssignAdd(total, pastTime);
  53     debugs(93,7, HERE << " current total: " << tvToMsec(total) << ' ' << this);
  54 }
  55
  56 void
  57 Adaptation::Icap::History::currentTime(timeval &current) const
  58 {
  59     if (concurrencyLevel > 0)
  60         tvSub(current, currentStart, current_time);
  61     else {
  62         current.tv_sec = 0;
  63         current.tv_usec = 0;
  64     }
  65 }
  66