src/Thread_DiskObserver.cpp

   1 ///////////////////////////////////////////////////////////////////////////////
   2 // LameXP - Audio Encoder Front-End
   3 // Copyright (C) 2004-2011 LoRd_MuldeR <MuldeR2@GMX.de>
   4 //
   5 // This program is free software; you can redistribute it and/or modify
   6 // it under the terms of the GNU General Public License as published by
   7 // the Free Software Foundation; either version 2 of the License, or
   8 // (at your option) any later version.
   9 //
  10 // This program is distributed in the hope that it will be useful,
  11 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13 // GNU General Public License for more details.
  14 //
  15 // You should have received a copy of the GNU General Public License along
  16 // with this program; if not, write to the Free Software Foundation, Inc.,
  17 // 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  18 //
  19 // http://www.gnu.org/licenses/gpl-2.0.txt
  20 ///////////////////////////////////////////////////////////////////////////////
  21
  22 #include "Thread_DiskObserver.h"
  23
  24 #include "Global.h"
  25
  26 #include <QDir>
  27
  28 #define MIN_DISKSPACE 104857600LL //100 MB
  29
  30 ////////////////////////////////////////////////////////////
  31 // Constructor & Destructor
  32 ////////////////////////////////////////////////////////////
  33
  34 DiskObserverThread::DiskObserverThread(const QString &path)
  35 :
  36         m_path(makeRootDir(path))
  37 {
  38         m_terminated = false;
  39 }
  40
  41 DiskObserverThread::~DiskObserverThread(void)
  42 {
  43 }
  44
  45 ////////////////////////////////////////////////////////////
  46 // Protected functions
  47 ////////////////////////////////////////////////////////////
  48
  49 void DiskObserverThread::run(void)
  50 {
  51         qDebug("DiskSpace observer started!");
  52
  53         try
  54         {
  55                 observe();
  56         }
  57         catch(...)
  58         {
  59                 fflush(stdout);
  60                 fflush(stderr);
  61                 fprintf(stderr, "\nGURU MEDITATION !!!\n");
  62                 FatalAppExit(0, L"Unhandeled exception error, application will exit!");
  63                 TerminateProcess(GetCurrentProcess(), -1);
  64         }
  65 }
  66
  67 void DiskObserverThread::observe(void)
  68 {
  69         __int64 freeSpace, minimumSpace = MIN_DISKSPACE;
  70
  71         while(!m_terminated)
  72         {
  73                 freeSpace = lamexp_free_diskspace(m_path);
  74                 if(freeSpace < minimumSpace)
  75                 {
  76                         qWarning("Free diskspace on '%s' dropped below %s MB, only %s MB free!", m_path.toUtf8().constData(), QString::number(minimumSpace / 1048576ui64).toUtf8().constData(), QString::number(freeSpace / 1048576ui64).toUtf8().constData());
  77                         emit messageLogged(tr("Low diskspace on drive '%1' detected (only %2 MB are free), problems can occur!").arg(QDir::toNativeSeparators(m_path), QString::number(freeSpace / 1048576ui64)), true);
  78                         minimumSpace = min(freeSpace, (minimumSpace >> 1));
  79                 }
  80                 Sleep(1000);
  81         }
  82 }
  83
  84 QString DiskObserverThread::makeRootDir(const QString &baseDir)
  85 {
  86         QDir dir(baseDir);
  87
  88         if(!dir.exists())
  89         {
  90                 return baseDir;
  91         }
  92
  93         bool success = true;
  94
  95         while(success)
  96         {
  97                 success = dir.cdUp();
  98         }
  99
 100         return dir.canonicalPath();
 101 }
 102
 103 ////////////////////////////////////////////////////////////
 104 // SLOTS
 105 ////////////////////////////////////////////////////////////
 106
 107 /*NONE*/
 108
 109 ////////////////////////////////////////////////////////////
 110 // EVENTS
 111 ////////////////////////////////////////////////////////////
 112
 113 /*NONE*/