git.sesse.net Git - casparcg/blob - protocol/amcp/AMCPCommandQueue.cpp

   1 /*\r
   2 * copyright (c) 2010 Sveriges Television AB <info@casparcg.com>\r
   3 *\r
   4 *  This file is part of CasparCG.\r
   5 *\r
   6 *    CasparCG is free software: you can redistribute it and/or modify\r
   7 *    it under the terms of the GNU General Public License as published by\r
   8 *    the Free Software Foundation, either version 3 of the License, or\r
   9 *    (at your option) any later version.\r
  10 *\r
  11 *    CasparCG is distributed in the hope that it will be useful,\r
  12 *    but WITHOUT ANY WARRANTY; without even the implied warranty of\r
  13 *    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the\r
  14 *    GNU General Public License for more details.\r
  15 \r
  16 *    You should have received a copy of the GNU General Public License\r
  17 *    along with CasparCG.  If not, see <http://www.gnu.org/licenses/>.\r
  18 *\r
  19 */\r
  20  \r
  21 #include "..\stdafx.h"\r
  22 \r
  23 #include "AMCPCommandQueue.h"\r
  24 \r
  25 namespace caspar { namespace protocol { namespace amcp {\r
  26         \r
  27 AMCPCommandQueue::AMCPCommandQueue() : newCommandEvent_(FALSE, FALSE) \r
  28 {}\r
  29 \r
  30 AMCPCommandQueue::~AMCPCommandQueue() \r
  31 {\r
  32         Stop();\r
  33 }\r
  34 \r
  35 bool AMCPCommandQueue::Start() \r
  36 {\r
  37         if(commandPump_.IsRunning())\r
  38                 return false;\r
  39 \r
  40         return commandPump_.Start(this);\r
  41 }\r
  42 \r
  43 void AMCPCommandQueue::Stop() \r
  44 {\r
  45         commandPump_.Stop();\r
  46 }\r
  47 \r
  48 void AMCPCommandQueue::AddCommand(AMCPCommandPtr pNewCommand)\r
  49 {\r
  50         {\r
  51                 tbb::mutex::scoped_lock lock(mutex_);\r
  52 \r
  53                 if(pNewCommand->GetScheduling() == ImmediatelyAndClear) {\r
  54                         //Clears the queue, objects are deleted automatically\r
  55                         commands_.clear();\r
  56 \r
  57                         commands_.push_back(pNewCommand);\r
  58                         CASPAR_LOG(info) << "Cleared queue and added command";\r
  59                 }\r
  60                 else {\r
  61                         commands_.push_back(pNewCommand);\r
  62                         CASPAR_LOG(info) << "Added command to end of queue";\r
  63                 }\r
  64         }\r
  65 \r
  66         SetEvent(newCommandEvent_);\r
  67 }\r
  68 \r
  69 void AMCPCommandQueue::Run(HANDLE stopEvent)\r
  70 {\r
  71         bool logTemporarilyBadState = true;\r
  72         AMCPCommandPtr pCurrentCommand;\r
  73 \r
  74         CASPAR_LOG(info) << "AMCP CommandPump started";\r
  75 \r
  76         while(WaitForSingleObject(stopEvent, 0) != WAIT_OBJECT_0)\r
  77         {\r
  78                 DWORD waitResult = WaitForSingleObject(newCommandEvent_, 50);\r
  79                 if(waitResult == WAIT_OBJECT_0) \r
  80                 {\r
  81                         tbb::mutex::scoped_lock lock(mutex_);\r
  82 \r
  83                         if(commands_.size() > 0)\r
  84                         {\r
  85                                 CASPAR_LOG(debug) << "Found " << commands_.size() << " commands in queue";\r
  86 \r
  87                                 AMCPCommandPtr pNextCommand = commands_.front();\r
  88 \r
  89                                 if(pCurrentCommand == 0 || pNextCommand->GetScheduling() == ImmediatelyAndClear) {\r
  90                                         pCurrentCommand = pNextCommand;\r
  91                                         commands_.pop_front();\r
  92                                 }\r
  93                         }\r
  94                 }\r
  95 \r
  96                 if(pCurrentCommand != 0) \r
  97                 {\r
  98                         try\r
  99                         {\r
 100                                 if(pCurrentCommand->Execute()) \r
 101                                         CASPAR_LOG(info) << "Executed command: " << pCurrentCommand->print();\r
 102                                 else \r
 103                                         CASPAR_LOG(info) << "Failed to execute command: " << pCurrentCommand->print();\r
 104                         }\r
 105                         catch(...)\r
 106                         {\r
 107                                 CASPAR_LOG_CURRENT_EXCEPTION();\r
 108                                 CASPAR_LOG(info) << "Failed to execute command:" << pCurrentCommand->print();\r
 109                         }\r
 110                                 \r
 111                         pCurrentCommand->SendReply();\r
 112                         pCurrentCommand.reset();\r
 113 \r
 114                         newCommandEvent_.Set();\r
 115                         logTemporarilyBadState = true;\r
 116 \r
 117                         CASPAR_LOG(info) << "Ready for a new command";\r
 118                 }\r
 119         }\r
 120 \r
 121         CASPAR_LOG(info) << "CommandPump ended";\r
 122 }\r
 123 \r
 124 bool AMCPCommandQueue::OnUnhandledException(const std::exception& ex) throw() \r
 125 {\r
 126         bool bDoRestart = true;\r
 127 \r
 128         try \r
 129         {\r
 130                 CASPAR_LOG(fatal) << "UNHANDLED EXCEPTION in commandqueue. Message: " << ex.what();\r
 131         }\r
 132         catch(...)\r
 133         {\r
 134                 bDoRestart = false;\r
 135         }\r
 136 \r
 137         return bDoRestart;\r
 138 }\r
 139 \r
 140 }}}