src/adaptation/icap/History.cc

   1 /*
   2  * Copyright (C) 1996-2014 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     logType(LOG_TAG_NONE),
  17     req_sz(0),
  18     concurrencyLevel(0)
  19 {
  20     memset(&currentStart, 0, sizeof(currentStart));
  21     memset(&pastTime, 0, sizeof(pastTime));
  22 }
  23
  24 void Adaptation::Icap::History::start(const char *context)
  25 {
  26     if (!concurrencyLevel++)
  27         currentStart = current_time;
  28
  29     debugs(93,4, HERE << "start " << context << " level=" << concurrencyLevel
  30            << " time=" << tvToMsec(pastTime) << ' ' << this);
  31 }
  32
  33 void Adaptation::Icap::History::stop(const char *context)
  34 {
  35     if (!concurrencyLevel) {
  36         debugs(93, DBG_IMPORTANT, HERE << "Internal error: poor history accounting " << this);
  37         return;
  38     }
  39
  40     struct timeval current;
  41     currentTime(current);
  42     debugs(93,4, HERE << "stop " << context << " level=" << concurrencyLevel <<
  43            " time=" << tvToMsec(pastTime) << '+' << tvToMsec(current) << ' ' << this);
  44
  45     if (!--concurrencyLevel)
  46         tvAssignAdd(pastTime, current);
  47 }
  48
  49 void
  50 Adaptation::Icap::History::processingTime(timeval &total) const
  51 {
  52     currentTime(total);
  53     tvAssignAdd(total, pastTime);
  54     debugs(93,7, HERE << " current total: " << tvToMsec(total) << ' ' << this);
  55 }
  56
  57 void
  58 Adaptation::Icap::History::currentTime(timeval &current) const
  59 {
  60     if (concurrencyLevel > 0)
  61         tvSub(current, currentStart, current_time);
  62     else {
  63         current.tv_sec = 0;
  64         current.tv_usec = 0;
  65     }
  66 }
  67