src/Thread_MessageHandler.cpp

   1 ///////////////////////////////////////////////////////////////////////////////
   2 // LameXP - Audio Encoder Front-End
   3 // Copyright (C) 2004-2017 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 }
  51
  52 MessageHandlerThread::~MessageHandlerThread(void)
  53 {
  54 }
  55
  56 void MessageHandlerThread::run()
  57 {
  58         setTerminationEnabled(true);
  59         QStringList params;
  60         quint32 command = 0, flags = 0;
  61
  62         while(!m_aborted)
  63         {
  64                 if(!m_ipcChannel->read(command, flags, params))
  65                 {
  66                         qWarning("Failed to read next IPC message!");
  67                         break;
  68                 }
  69
  70                 if(command == IPC_CMD_NOOP)
  71                 {
  72                         continue;
  73                 }
  74
  75                 switch(command)
  76                 {
  77                 case IPC_CMD_PING:
  78                         emit otherInstanceDetected();
  79                         break;
  80                 case IPC_CMD_ADD_FILE:
  81                         if(params.count() > 0 )
  82                         {
  83                                 emit fileReceived(params.first());
  84                         }
  85                         break;
  86                 case IPC_CMD_ADD_FOLDER:
  87                         if(params.count() > 0 )
  88                         {
  89                                 emit folderReceived(params.first(), TEST_FLAG(IPC_FLAG_ADD_RECURSIVE));
  90                         }
  91                         break;
  92                 case IPC_CMD_TERMINATE:
  93                         if(TEST_FLAG(IPC_FLAG_FORCE))
  94                         {
  95                                 _exit(-2);
  96                         }
  97                         emit killSignalReceived();
  98                         break;
  99                 default:
 100                         qWarning("Received an unknown IPC message! (command=%u)", command);
 101                         break;
 102                 }
 103         }
 104 }
 105
 106 void MessageHandlerThread::stop(void)
 107 {
 108         if(!m_aborted)
 109         {
 110                 m_aborted.ref();
 111                 m_ipcChannel->send(0, 0, QStringList());
 112         }
 113 }
 114
 115 ////////////////////////////////////////////////////////////
 116 // EVENTS
 117 ////////////////////////////////////////////////////////////
 118
 119 /*NONE*/