recv.cpp

// -*- mode: c++; c-indent-level: 4; c++-member-init-indent: 8; comment-column: 35; -*-

// "recv.cpp"

// (c) OPAC Team, LIFL, August 2005

/* This library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Lesser General Public
   License as published by the Free Software Foundation; either
   version 2 of the License, or (at your option) any later version.
   
   This library is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   Lesser General Public License for more details.
   
   You should have received a copy of the GNU Lesser General Public
   License along with this library; if not, write to the Free Software
   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
   
   Contact: paradiseo-help@lists.gforge.inria.fr
*/

#include "comm.h"
#include "tags.h"
#include "worker.h"
#include "scheduler.h"
#include "mess.h"
#include "node.h"
#include "../../core/runner.h"
#include "../../core/cooperative.h"
#include "../../core/peo_debug.h"

void receiveMessages () {

  cleanBuffers ();
    
  do {

    if (! atLeastOneActiveThread ()) {
      //      printDebugMessage ("debut wait");
      waitMessage ();
      //printDebugMessage ("fin wait");
    }
    
    int src, tag;

    while (probeMessage (src, tag)) {
      
      receiveMessage (src, tag);
      initMessage ();
      /*
      char b [1000];
      sprintf (b, "traitement recv %d\n", tag);
      printDebugMessage (b);
      */
      
      switch (tag) {
        
      case RUNNER_STOP_TAG:     
        unpackTerminationOfRunner ();   
        wakeUpCommunicator ();
        break;
      
      case COOP_TAG:
        //      printDebugMessage ("reception de message de cooperation");
        COOP_ID coop_id;
        unpack (coop_id);
        getCooperative (coop_id) -> unpack ();
        break;

      case SCHED_REQUEST_TAG:   
        unpackResourceRequest ();
        break;
        
      case SCHED_RESULT_TAG:
        {         
          /* Unpacking the resource */
          SERVICE_ID serv_id;
          unpack (serv_id);
          Service * serv = getService (serv_id);
          int dest;
          unpack (dest);
          WORKER_ID worker_id;
          unpack (worker_id);

          /* Going back ... */
          initMessage ();
          pack (worker_id);
          pack (serv_id); 
          serv -> packData ();
          serv -> notifySendingData ();
          sendMessage (dest, TASK_DATA_TAG);
          break;
        }

      case TASK_DATA_TAG:
      {
        WORKER_ID worker_id;
        unpack (worker_id);             
        Worker * worker = getWorker (worker_id);
        worker -> setSource (src);
        worker -> unpackData ();
        worker -> wakeUp ();
        break; 
      }
      
      case TASK_RESULT_TAG:
        {
          SERVICE_ID serv_id;
          unpack (serv_id);
          Service * serv = getService (serv_id);
          serv -> unpackResult ();
          break;
        }

      case TASK_DONE_TAG:
        unpackTaskDone ();
        break;

      default:
        ;
      };
    }
        
  } while (! atLeastOneActiveThread () && atLeastOneActiveRunner () /*&& ! allResourcesFree ()*/);
}

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