src/Thread_MessageHandler.cpp

   1 ///////////////////////////////////////////////////////////////////////////////
   2 // LameXP - Audio Encoder Front-End
   3 // Copyright (C) 2004-2016 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, but always including the *additional*
   9 // restrictions defined in the "License.txt" file.
  10 //
  11 // This program is distributed in the hope that it will be useful,
  12 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 // GNU General Public License for more details.
  15 //
  16 // You should have received a copy of the GNU General Public License along
  17 // with this program; if not, write to the Free Software Foundation, Inc.,
  18 // 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  19 //
  20 // http://www.gnu.org/licenses/gpl-2.0.txt
  21 ///////////////////////////////////////////////////////////////////////////////
  22
  23 #include "Thread_MessageHandler.h"
  24
  25 //Internal
  26 #include "Global.h"
  27 #include "IPCCommands.h"
  28
  29 //MUtils
  30 #include <MUtils/IPCChannel.h>
  31
  32 //Qt
  33 #include <QSharedMemory>
  34 #include <QSystemSemaphore>
  35 #include <QMessageBox>
  36
  37 //CRL
  38 #include <limits.h>
  39
  40 #define TEST_FLAG(X) ((flags & (X)) == (X))
  41
  42 ////////////////////////////////////////////////////////////
  43 // Constructor
  44 ////////////////////////////////////////////////////////////
  45
  46 MessageHandlerThread::MessageHandlerThread(MUtils::IPCChannel *const ipcChannel)
  47 :
  48         m_ipcChannel(ipcChannel)
  49 {
  50         m_aborted = false;
  51 }
  52
  53 MessageHandlerThread::~MessageHandlerThread(void)
  54 {
  55 }
  56
  57 void MessageHandlerThread::run()
  58 {
  59         m_aborted = false;
  60         setTerminationEnabled(true);
  61         QStringList params;
  62         quint32 command = 0, flags = 0;
  63
  64         while(!m_aborted)
  65         {
  66                 if(!m_ipcChannel->read(command, flags, params))
  67                 {
  68                         qWarning("Failed to read next IPC message!");
  69                         break;
  70                 }
  71
  72                 if(command == IPC_CMD_NOOP)
  73                 {
  74                         continue;
  75                 }
  76
  77                 switch(command)
  78                 {
  79                 case IPC_CMD_PING:
  80                         emit otherInstanceDetected();
  81                         break;
  82                 case IPC_CMD_ADD_FILE:
  83                         if(params.count() > 0 )
  84                         {
  85                                 emit fileReceived(params.first());
  86                         }
  87                         break;
  88                 case IPC_CMD_ADD_FOLDER:
  89                         if(params.count() > 0 )
  90                         {
  91                                 emit folderReceived(params.first(), TEST_FLAG(IPC_FLAG_ADD_RECURSIVE));
  92                         }
  93                         break;
  94                 case IPC_CMD_TERMINATE:
  95                         if(TEST_FLAG(IPC_FLAG_FORCE))
  96                         {
  97                                 _exit(-2);
  98                         }
  99                         emit killSignalReceived();
 100                         break;
 101                 default:
 102                         qWarning("Received an unknown IPC message! (command=%u)", command);
 103                         break;
 104                 }
 105         }
 106 }
 107
 108 void MessageHandlerThread::stop(void)
 109 {
 110         if(!m_aborted)
 111         {
 112                 m_aborted = true;
 113                 m_ipcChannel->send(0, 0, QStringList());
 114         }
 115 }
 116
 117 ////////////////////////////////////////////////////////////
 118 // EVENTS
 119 ////////////////////////////////////////////////////////////
 120
 121 /*NONE*/