Tue Oct 21 19:10:21 UTC 2008 Abdullah Sowayan <abdullah.sowayan@lmco.com>

1 files changed, 73 insertions, 0 deletions

diff --git a/TAO/DevGuideExamples/Multithreading/ThreadPool/MessengerServer.cpp b/TAO/DevGuideExamples/Multithreading/ThreadPool/MessengerServer.cpp
new file mode 100644
index 00000000000..af34d103c0d
--- /dev/null
+++ b/TAO/DevGuideExamples/Multithreading/ThreadPool/MessengerServer.cpp
@@ -0,0 +1,73 @@
+#include "Messenger_i.h"
+#include <iostream>
+#include <fstream>
+// 1. Define a "task" class for implenting the thread pool threads.
+#include <ace/Task.h>
+
+class ORB_Task : public ACE_Task_Base
+{
+public:
+  ORB_Task (CORBA::ORB_ptr orb)
+  : orb_(CORBA::ORB::_duplicate(orb)) { }
+  virtual ~ORB_Task () { }
+  virtual int svc ()
+  {
+    this->orb_->run();
+    return 0;
+  }
+private:
+  CORBA::ORB_var orb_;
+};
+
+// 2. Establish the number of threads.
+static const int nthreads = 4;
+
+int ACE_TMAIN (int argc, ACE_TCHAR *argv[])
+{
+  try {
+    // Initialize the ORB.
+    CORBA::ORB_var orb = CORBA::ORB_init( argc, argv );
+
+    //Get reference to the RootPOA.
+    CORBA::Object_var obj = orb->resolve_initial_references( "RootPOA" );
+    PortableServer::POA_var poa = PortableServer::POA::_narrow( obj.in() );
+
+    // Activate the POAManager.
+    PortableServer::POAManager_var mgr = poa->the_POAManager();
+    mgr->activate();
+
+    // Create a servant.
+    Messenger_i messenger_servant;
+
+    // Register the servant with the RootPOA, obtain its object
+    // reference, stringify it, and write it to a file.
+    PortableServer::ObjectId_var oid =
+      poa->activate_object( &messenger_servant );
+    CORBA::Object_var messenger_obj = poa->id_to_reference( oid.in() );
+    CORBA::String_var str = orb->object_to_string( messenger_obj.in() );
+    std::ofstream iorFile( "Messenger.ior" );
+    iorFile << str.in() << std::endl;
+    iorFile.close();
+    std::cout << "IOR written to file Messenger.ior" << std::endl;
+
+    // 3. Create and activate threads for the thread pool.
+    ORB_Task task (orb.in());
+    int retval = task.activate (THR_NEW_LWP | THR_JOINABLE, nthreads);
+    if (retval != 0) {
+      std::cerr << "Failed to activate " << nthreads << " threads." << std::endl;
+      return 1;
+    }
+
+    // 4. Wait for threads to finish.
+    task.wait();
+
+    // Clean up.
+    orb->destroy();
+  }
+  catch(const CORBA::Exception& ex) {
+    std::cerr << "CORBA exception: " << ex << std::endl;
+    return 1;
+  }
+
+  return 0;
+}