tools/timertop/timerinfo.cpp

   1 /*
   2   timerinfo.cpp
   3
   4   This file is part of GammaRay, the Qt application inspection and
   5   manipulation tool.
   6
   7   Copyright (C) 2010-2011 Klarälvdalens Datakonsult AB, a KDAB Group company, info@kdab.com
   8   Author: Thomas McGuire <thomas.mcguire@kdab.com>
   9
  10   This program is free software; you can redistribute it and/or modify
  11   it under the terms of the GNU General Public License as published by
  12   the Free Software Foundation, either version 2 of the License, or
  13   (at your option) any later version.
  14
  15   This program is distributed in the hope that it will be useful,
  16   but WITHOUT ANY WARRANTY; without even the implied warranty of
  17   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18   GNU General Public License for more details.
  19
  20   You should have received a copy of the GNU General Public License
  21   along with this program.  If not, see <http://www.gnu.org/licenses/>.
  22 */
  23 #include "timerinfo.h"
  24
  25 #include <util.h>
  26
  27 #include <QObject>
  28
  29 using namespace GammaRay;
  30
  31 static const int maxTimeoutEvents = 1000;
  32 static const int maxTimeSpan = 10000;
  33
  34 TimerInfo::TimerInfo(QTimer *timer)
  35   : m_type(QTimerType),
  36     m_timer(timer),
  37     m_timerId(timer->timerId()),
  38     m_totalWakeups(0),
  39     m_lastReceiver(0)
  40 {
  41 }
  42
  43 TimerInfo::TimerInfo(int timerId)
  44   : m_type(QObjectType),
  45     m_timerId(timerId),
  46     m_totalWakeups(0)
  47 {
  48 }
  49
  50 void TimerInfo::addEvent(const TimeoutEvent &timeoutEvent)
  51 {
  52   m_timeoutEvents.append(timeoutEvent);
  53   removeOldEvents();
  54   m_totalWakeups++;
  55 }
  56
  57 int TimerInfo::numEvents() const
  58 {
  59   return m_timeoutEvents.size();
  60 }
  61
  62 QTimer *TimerInfo::timer() const
  63 {
  64   return m_timer;
  65 }
  66
  67 int TimerInfo::timerId() const
  68 {
  69   return m_timerId;
  70 }
  71
  72 FunctionCallTimer *TimerInfo::functionCallTimer()
  73 {
  74   return &m_functionCallTimer;
  75 }
  76
  77 QString TimerInfo::wakeupsPerSec() const
  78 {
  79   int totalWakeups = 0;
  80   int start = 0;
  81   int end = m_timeoutEvents.size() - 1;
  82   for (int i = end; i >= 0; i--) {
  83     const TimeoutEvent &event = m_timeoutEvents.at(i);
  84     if (event.timeStamp.msecsTo(QTime::currentTime()) > maxTimeSpan) {
  85       start = i;
  86       break;
  87     }
  88     totalWakeups++;
  89   }
  90
  91   if (totalWakeups > 0 && end > start) {
  92     const QTime startTime = m_timeoutEvents[start].timeStamp;
  93     const QTime endTime = m_timeoutEvents[end].timeStamp;
  94     const int timeSpan = startTime.msecsTo(endTime);
  95     const float wakeupsPerSec = totalWakeups / (float)timeSpan * 1000.0f;
  96     return QString::number(wakeupsPerSec, 'f', 1);
  97   }
  98   return "0";
  99 }
 100
 101 QString TimerInfo::timePerWakeup() const
 102 {
 103   if (m_type == QObjectType) {
 104     return "N/A";
 105   }
 106
 107   int totalWakeups = 0;
 108   int totalTime = 0;
 109   for (int i = m_timeoutEvents.size() - 1; i >= 0; i--) {
 110     const TimeoutEvent &event = m_timeoutEvents.at(i);
 111     if (event.timeStamp.msecsTo(QTime::currentTime()) > maxTimeSpan) {
 112       break;
 113     }
 114     totalWakeups++;
 115     totalTime += event.executionTime;
 116   }
 117
 118   if (totalWakeups > 0) {
 119     return QString::number(totalTime / (float)totalWakeups, 'f', 1);
 120   }
 121   return "N/A";
 122 }
 123
 124 QString TimerInfo::maxWakeupTime() const
 125 {
 126   if (m_type == QObjectType) {
 127     return "N/A";
 128   }
 129
 130   int max = 0;
 131   for (int i = 0; i < m_timeoutEvents.size(); i++) {
 132     const TimeoutEvent &event = m_timeoutEvents.at(i);
 133     if (event.executionTime > max) {
 134       max = event.executionTime;
 135     }
 136   }
 137   return QString::number(max);
 138 }
 139
 140 int TimerInfo::totalWakeups() const
 141 {
 142   return m_totalWakeups;
 143 }
 144
 145 QString TimerInfo::state() const
 146 {
 147   if (!m_timer){
 148     return QObject::tr("None");
 149   }
 150
 151   if (!m_timer->isActive()) {
 152     return QObject::tr("Inactive");
 153   } else {
 154     if (m_timer->isSingleShot()) {
 155       return QObject::tr("Singleshot (%1 ms)").arg(m_timer->interval());
 156     } else {
 157       return QObject::tr("Repeating (%1 ms)").arg(m_timer->interval());
 158     }
 159   }
 160 }
 161
 162 void TimerInfo::removeOldEvents()
 163 {
 164   if (m_timeoutEvents.size() > maxTimeoutEvents) {
 165     m_timeoutEvents.removeFirst();
 166   }
 167 }
 168
 169 void TimerInfo::setLastReceiver(QObject *receiver)
 170 {
 171     m_lastReceiver = receiver;
 172 }
 173
 174 QString TimerInfo::displayName() const
 175 {
 176   if (timer()) {
 177     return Util::displayString(timer());
 178   } else {
 179     if (m_lastReceiver) {
 180       return Util::displayString(m_lastReceiver);
 181     } else {
 182       return QObject::tr("Unknown QObject");
 183     }
 184   }
 185 }