TAO/DevGuideExamples/Multithreading/DynamicThreadPool/MessengerServer.cpp

   1 #include "started_pch.h"
   2
   3 #include "Messenger_i.h"
   4 #include "tao/Dynamic_TP/DTP_POA_Strategy.h"
   5 #include <iostream>
   6 #include <fstream>
   7 #include "ace/Get_Opt.h"
   8
   9 const ACE_TCHAR *ior_output_file = ACE_TEXT ("Messenger.ior");
  10
  11 int
  12 parse_args (int argc, ACE_TCHAR *argv[])
  13 {
  14   ACE_Get_Opt get_opts (argc, argv, ACE_TEXT("o:"));
  15   int c;
  16
  17   while ((c = get_opts ()) != -1)
  18     switch (c)
  19       {
  20       case 'o':
  21         ior_output_file = get_opts.opt_arg ();
  22         break;
  23
  24       case '?':
  25       default:
  26         ACE_ERROR_RETURN ((LM_ERROR,
  27                            "usage:  %s "
  28                            "-o <iorfile>"
  29                            "\n",
  30                            argv [0]),
  31                           -1);
  32       }
  33   // Indicates successful parsing of the command line
  34   return 0;
  35 }
  36
  37 int ACE_TMAIN (int argc, ACE_TCHAR *argv[])
  38 {
  39   try {
  40     // Initialize the ORB.
  41     CORBA::ORB_var orb = CORBA::ORB_init( argc, argv );
  42
  43     if (parse_args (argc, argv) != 0)
  44         return 1;
  45
  46     //Get reference to the RootPOA.
  47     CORBA::Object_var obj = orb->resolve_initial_references( "RootPOA" );
  48     PortableServer::POA_var poa = PortableServer::POA::_narrow( obj.in() );
  49
  50     // Create a configuration structure and set the values
  51     TAO_DTP_Definition tp_config;
  52
  53     tp_config.min_threads_ = 1;                   // Set low water mark to 1 thread.
  54     tp_config.init_threads_ = 3;                  // Start 3 threads to start.
  55     tp_config.max_threads_ = -1;                  // Create threads as needed (no limit).
  56     tp_config.queue_depth_ = -1;                  // Allow infinite queue depth.
  57     tp_config.stack_size_ = (64 * 1024);          // Each thread with 64K stacksize.
  58     tp_config.timeout_ = ACE_Time_Value(30,0);    // Expire thread that is idle for 30 sec.
  59
  60     // Create the dynamic thread pool servant dispatching strategy object, and
  61     // hold it in a (local) smart pointer variable.
  62     TAO_Intrusive_Ref_Count_Handle<TAO_DTP_POA_Strategy> dtp_strategy =
  63                             new TAO_DTP_POA_Strategy(&tp_config, false);
  64
  65   // Tell the strategy to apply itself to the child poa.
  66     if (dtp_strategy->apply_to(poa.in()) == false)
  67       {
  68         ACE_ERROR((LM_ERROR,
  69                    "Failed to apply CSD strategy to root poa.\n"));
  70         return -1;
  71       }
  72
  73
  74     // Activate the POAManager.
  75     PortableServer::POAManager_var mgr = poa->the_POAManager();
  76     mgr->activate();
  77
  78     // Create a servant.
  79     PortableServer::Servant_var<Messenger_i> servant = new Messenger_i();
  80
  81     // Register the servant with the RootPOA, obtain its object
  82     // reference, stringify it, and write it to a file.
  83     PortableServer::ObjectId_var oid = poa->activate_object( servant.in() );
  84     obj = poa->id_to_reference( oid.in() );
  85     CORBA::String_var str = orb->object_to_string( obj.in() );
  86     std::ofstream iorFile( ACE_TEXT_ALWAYS_CHAR(ior_output_file) );
  87     iorFile << str.in() << std::endl;
  88     iorFile.close();
  89     std::cout << "IOR written to file " << ACE_TEXT_ALWAYS_CHAR(ior_output_file) << std::endl;
  90
  91     // Accept requests from clients.
  92     orb->run();
  93     orb->destroy();
  94
  95     return 0;
  96   }
  97   catch(const CORBA::Exception& ex) {
  98     std::cerr << "CORBA exception: " << ex << std::endl;
  99   }
 100
 101   return 1;
 102 }