TAO/examples/CSD_Strategy/ThreadPool5/OrbTask.cpp

   1 // This may look like C, but it's really -*- C++ -*-
   2
   3 //=============================================================================
   4 /**
   5  *  @file    OrbTask.cpp
   6  *
   7  *  @author  Tim Bradley <bradley_t@ociweb.com>
   8  */
   9 //=============================================================================
  10
  11 #include "OrbTask.h"
  12
  13 namespace { enum { MAX_ORB_TASK_WORKER_THREADS = 20 }; }
  14
  15
  16 OrbTask::OrbTask(CORBA::ORB_ptr orb, unsigned num_threads)
  17   : num_threads_(num_threads)
  18 {
  19   this->orb_ = CORBA::ORB::_duplicate(orb);
  20 }
  21
  22
  23 OrbTask::~OrbTask()
  24 {
  25 }
  26
  27
  28 int
  29 OrbTask::open(void*)
  30 {
  31   if (this->num_threads_ < 1)
  32     {
  33       ACE_ERROR_RETURN((LM_ERROR,
  34                         "(%P|%t) OrbTask failed to open.  "
  35                         "num_threads_ (%d) is less-than 1.\n",
  36                         this->num_threads_),
  37                        -1);
  38     }
  39
  40   if (this->num_threads_ > MAX_ORB_TASK_WORKER_THREADS)
  41     {
  42       ACE_ERROR_RETURN((LM_ERROR,
  43                         "(%P|%t) OrbTask failed to open.  "
  44                         "num_threads_ (%d) is too large.  Max is %d.\n",
  45                         this->num_threads_, MAX_ORB_TASK_WORKER_THREADS),
  46                        -1);
  47     }
  48
  49   if (CORBA::is_nil(this->orb_.in()))
  50     {
  51       ACE_ERROR_RETURN((LM_ERROR,
  52                         "(%P|%t) OrbTask failed to open.  "
  53                         "ORB object reference is nil.\n"),
  54                         -1);
  55     }
  56
  57   if (this->activate(THR_NEW_LWP | THR_JOINABLE, this->num_threads_) != 0)
  58     {
  59       // Assumes that when activate returns non-zero return code that
  60       // no threads were activated.
  61       ACE_ERROR_RETURN((LM_ERROR,
  62                         "(%P|%t) OrbTask failed to activate "
  63                         "(%d) worker threads.\n",
  64                         this->num_threads_),
  65                        -1);
  66     }
  67
  68   return 0;
  69 }
  70
  71
  72 int
  73 OrbTask::svc()
  74 {
  75   try
  76   {
  77     this->orb_->run();
  78   }
  79   catch (...)
  80   {
  81     ACE_ERROR((LM_ERROR,
  82                "(%P|%t) Exception raised by ORB::run() method. "
  83                "OrbTask is stopping.\n"));
  84   }
  85
  86   return 0;
  87 }
  88
  89
  90 int
  91 OrbTask::close(u_long)
  92 {
  93   return 0;
  94 }