src/sbuf/Stats.cc

   1 /*
   2  * Copyright (C) 1996-2017 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 "sbuf/MemBlob.h"
  11 #include "sbuf/SBuf.h"
  12 #include "sbuf/Stats.h"
  13
  14 #include <iostream>
  15
  16 SBufStats::SBufStats()
  17     : alloc(0), allocCopy(0), allocFromCString(0),
  18       assignFast(0), clear(0), append(0), moves(0), toStream(0), setChar(0),
  19       getChar(0), compareSlow(0), compareFast(0), copyOut(0),
  20       rawAccess(0), nulTerminate(0), chop(0), trim(0), find(0),
  21       caseChange(0), cowFast(0), cowSlow(0), live(0)
  22 {}
  23
  24 SBufStats&
  25 SBufStats::operator +=(const SBufStats& ss)
  26 {
  27     alloc += ss.alloc;
  28     allocCopy += ss.allocCopy;
  29     allocFromCString += ss.allocFromCString;
  30     assignFast += ss.assignFast;
  31     clear += ss.clear;
  32     append += ss.append;
  33     moves += ss.moves;
  34     toStream += ss.toStream;
  35     setChar += ss.setChar;
  36     getChar += ss.getChar;
  37     compareSlow += ss.compareSlow;
  38     compareFast += ss.compareFast;
  39     copyOut += ss.copyOut;
  40     rawAccess += ss.rawAccess;
  41     nulTerminate += ss.nulTerminate;
  42     chop += ss.chop;
  43     trim += ss.trim;
  44     find += ss.find;
  45     caseChange += ss.caseChange;
  46     cowFast += ss.cowFast;
  47     cowSlow += ss.cowSlow;
  48     live += ss.live;
  49
  50     return *this;
  51 }
  52
  53 std::ostream &
  54 SBufStats::dump(std::ostream& os) const
  55 {
  56     MemBlobStats ststats = MemBlob::GetStats();
  57     os <<
  58        "SBuf stats:\nnumber of allocations: " << alloc <<
  59        "\ncopy-allocations: " << allocCopy <<
  60        "\ncopy-allocations from C String: " << allocFromCString <<
  61        "\nlive references: " << live <<
  62        "\nno-copy assignments: " << assignFast <<
  63        "\nclearing operations: " << clear <<
  64        "\nappend operations: " << append <<
  65        "\nmove operations: " << moves <<
  66        "\ndump-to-ostream: " << toStream <<
  67        "\nset-char: " << setChar <<
  68        "\nget-char: " << getChar <<
  69        "\ncomparisons with data-scan: " << compareSlow <<
  70        "\ncomparisons not requiring data-scan: " << compareFast <<
  71        "\ncopy-out ops: " << copyOut <<
  72        "\nraw access to memory: " << rawAccess <<
  73        "\nNULL terminate C string: " << nulTerminate <<
  74        "\nchop operations: " << chop <<
  75        "\ntrim operations: " << trim <<
  76        "\nfind: " << find <<
  77        "\ncase-change ops: " << caseChange <<
  78        "\nCOW not actually requiring a copy: " << cowFast <<
  79        "\nCOW: " << cowSlow <<
  80        "\naverage store share factor: " <<
  81        (ststats.live != 0 ? static_cast<float>(live)/ststats.live : 0) <<
  82        std::endl;
  83     return os;
  84 }
  85