(file) Return to MessageQueueService.cpp CVS log (file) (dir) Up to [Pegasus] / pegasus / src / Pegasus / Common

Diff for /pegasus/src/Pegasus/Common/MessageQueueService.cpp between version 1.151 and 1.163

version 1.151, 2008/11/05 05:24:34 version 1.163, 2009/04/09 05:23:26
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 //%2006////////////////////////////////////////////////////////////////////////  //%LICENSE////////////////////////////////////////////////////////////////
 // //
 // Copyright (c) 2000, 2001, 2002 BMC Software; Hewlett-Packard Development  // Licensed to The Open Group (TOG) under one or more contributor license
 // Company, L.P.; IBM Corp.; The Open Group; Tivoli Systems.  // agreements.  Refer to the OpenPegasusNOTICE.txt file distributed with
 // Copyright (c) 2003 BMC Software; Hewlett-Packard Development Company, L.P.;  // this work for additional information regarding copyright ownership.
 // IBM Corp.; EMC Corporation, The Open Group.  // Each contributor licenses this file to you under the OpenPegasus Open
 // Copyright (c) 2004 BMC Software; Hewlett-Packard Development Company, L.P.;  // Source License; you may not use this file except in compliance with the
 // IBM Corp.; EMC Corporation; VERITAS Software Corporation; The Open Group.  // License.
 // Copyright (c) 2005 Hewlett-Packard Development Company, L.P.; IBM Corp.;  
 // EMC Corporation; VERITAS Software Corporation; The Open Group.  
 // Copyright (c) 2006 Hewlett-Packard Development Company, L.P.; IBM Corp.;  
 // EMC Corporation; Symantec Corporation; The Open Group.  
 // //
 // Permission is hereby granted, free of charge, to any person obtaining a copy  // Permission is hereby granted, free of charge, to any person obtaining a
 // of this software and associated documentation files (the "Software"), to  // copy of this software and associated documentation files (the "Software"),
 // deal in the Software without restriction, including without limitation the  // to deal in the Software without restriction, including without limitation
 // rights to use, copy, modify, merge, publish, distribute, sublicense, and/or  // the rights to use, copy, modify, merge, publish, distribute, sublicense,
 // sell copies of the Software, and to permit persons to whom the Software is  // and/or sell copies of the Software, and to permit persons to whom the
 // furnished to do so, subject to the following conditions:  // Software is furnished to do so, subject to the following conditions:
 // //
 // THE ABOVE COPYRIGHT NOTICE AND THIS PERMISSION NOTICE SHALL BE INCLUDED IN  // The above copyright notice and this permission notice shall be included
 // ALL COPIES OR SUBSTANTIAL PORTIONS OF THE SOFTWARE. THE SOFTWARE IS PROVIDED  // in all copies or substantial portions of the Software.
 // "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT  
 // LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR  
 // PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT  
 // HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN  
 // ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION  
 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.  
 // //
 //==============================================================================  // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
   // OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
   // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
   // IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
   // CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
   // TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
   // SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
   //
   //////////////////////////////////////////////////////////////////////////
 // //
 //%///////////////////////////////////////////////////////////////////////////// //%/////////////////////////////////////////////////////////////////////////////
  
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 #include <Pegasus/Common/Tracer.h> #include <Pegasus/Common/Tracer.h>
 #include <Pegasus/Common/MessageLoader.h> #include <Pegasus/Common/MessageLoader.h>
  
   PEGASUS_USING_STD;
   
 PEGASUS_NAMESPACE_BEGIN PEGASUS_NAMESPACE_BEGIN
  
 cimom *MessageQueueService::_meta_dispatcher = 0; cimom *MessageQueueService::_meta_dispatcher = 0;
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     void* parm)     void* parm)
 { {
     Thread *myself = reinterpret_cast<Thread *>(parm);     Thread *myself = reinterpret_cast<Thread *>(parm);
     List<MessageQueueService, Mutex> *list =      MessageQueueService::PollingList *list =
         reinterpret_cast<List<MessageQueueService, Mutex>*>(myself->get_parm());          reinterpret_cast<MessageQueueService::PollingList*>(myself->get_parm());
  
       try
       {
     while (_stop_polling.get()  == 0)     while (_stop_polling.get()  == 0)
     {     {
         _polling_sem.wait();         _polling_sem.wait();
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         // processing the _polling_list         // processing the _polling_list
         // (e.g., MessageQueueServer::~MessageQueueService).         // (e.g., MessageQueueServer::~MessageQueueService).
  
         list->lock();              _polling_list_mutex.lock();
         MessageQueueService *service = list->front();         MessageQueueService *service = list->front();
         ThreadStatus rtn = PEGASUS_THREAD_OK;         ThreadStatus rtn = PEGASUS_THREAD_OK;
         while (service != NULL)         while (service != NULL)
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                 // lock and has ownership of the service object.                 // lock and has ownership of the service object.
  
                 service->_threads++;                 service->_threads++;
                 try  
                 {  
                     rtn = _thread_pool->allocate_and_awaken(                     rtn = _thread_pool->allocate_and_awaken(
                         service, _req_proc, &_polling_sem);                         service, _req_proc, &_polling_sem);
                 }  
                 catch (...)  
                 {  
                     service->_threads--;  
   
                     // allocate_and_awaken should never generate an exception.  
                     PEGASUS_ASSERT(0);  
                 }  
                 // if no more threads available, break from processing loop                 // if no more threads available, break from processing loop
                 if (rtn != PEGASUS_THREAD_OK )                 if (rtn != PEGASUS_THREAD_OK )
                 {                 {
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                         service->_threads.get()));                         service->_threads.get()));
  
                     Threads::yield();                     Threads::yield();
                     service = NULL;                          break;
                 }                 }
             }             }
             if (service != NULL)  
             {  
                 service = list->next_of(service);                 service = list->next_of(service);
             }             }
               _polling_list_mutex.unlock();
         }         }
         list->unlock();  
     }     }
       catch(const Exception &e)
       {
           PEG_TRACE((TRC_MESSAGEQUEUESERVICE,Tracer::LEVEL1,
               "Exception caught in MessageQueueService::polling_routine : %s",
                   (const char*)e.getMessage().getCString()));
       }
       catch(const exception &e)
       {
           PEG_TRACE((TRC_MESSAGEQUEUESERVICE,Tracer::LEVEL1,
               "Exception caught in MessageQueueService::polling_routine : %s",
                   e.what()));
       }
       catch(...)
       {
           PEG_TRACE_CSTRING(TRC_MESSAGEQUEUESERVICE,Tracer::LEVEL1,
               "Unknown Exception caught in MessageQueueService::polling_routine");
       }
   
       PEGASUS_ASSERT(_stop_polling.get());
   
     return ThreadReturnType(0);     return ThreadReturnType(0);
 } }
  
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 MessageQueueService::MessageQueueService( MessageQueueService::MessageQueueService(
     const char* name,      const char* name)
     Uint32 queueID)      : Base(name, true),
     : Base(name, true,  queueID),  
       _die(0),       _die(0),
       _threads(0),       _threads(0),
       _incoming(),       _incoming(),
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     }     }
     _service_count++;     _service_count++;
  
     _get_polling_list()->insert_back(this);      // Add to the polling list
       if (!_polling_list)
       {
           _polling_list = new PollingList;
       }
       _polling_list->insert_back(this);
      _meta_dispatcher->registerCIMService(this);
 } }
  
  
 MessageQueueService::~MessageQueueService() MessageQueueService::~MessageQueueService()
 { {
     _die = 1;  
   
     // The polling_routine locks the _polling_list while  
     // processing the incoming messages for services on the  
     // list.  Deleting the service from the _polling_list  
     // prior to processing, avoids synchronization issues  
     // with the _polling_routine.  
   
     // ATTN: added to prevent assertion in List in which the list does not  
     // contain this element.  
   
     if (_get_polling_list()->contains(this))  
         _get_polling_list()->remove(this);  
  
     // ATTN: The code for closing the _incoming queue      // Close incoming queue.
     // is not working correctly. In OpenPegasus 2.5,  
     // execution of the following code is very timing  
     // dependent. This needs to be fix.  
     // See Bug 4079 for details.  
     if (_incoming_queue_shutdown.get() == 0)     if (_incoming_queue_shutdown.get() == 0)
     {     {
         _shutdown_incoming_queue();          AsyncIoClose *msg = new AsyncIoClose(
               0,
               _queueId,
               true);
           SendForget(msg);
           // Wait until our queue has been shutdown.
           while (_incoming_queue_shutdown.get() == 0)
           {
               Threads::yield();
     }     }
       }
   
       // die now.
       _die = 1;
   
       _meta_dispatcher->deregisterCIMService(this);
  
     // Wait until all threads processing the messages     // Wait until all threads processing the messages
     // for this service have completed.     // for this service have completed.
   
     while (_threads.get() > 0)     while (_threads.get() > 0)
     {     {
         Threads::yield();         Threads::yield();
     }     }
  
   
       // The polling_routine locks the _polling_list while
       // processing the incoming messages for services on the
       // list.  Deleting the service from the _polling_list
       // prior to processing, avoids synchronization issues
       // with the _polling_routine.
       _removeFromPollingList(this);
   
     {     {
         AutoMutex autoMut(_meta_dispatcher_mutex);         AutoMutex autoMut(_meta_dispatcher_mutex);
   
         _service_count--;         _service_count--;
           // If we are last service to die, delete metadispatcher.
         if (_service_count.get() == 0)         if (_service_count.get() == 0)
         {         {
   
             _stop_polling++;             _stop_polling++;
             _polling_sem.signal();             _polling_sem.signal();
             if (_polling_thread)             if (_polling_thread)
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                 delete _polling_thread;                 delete _polling_thread;
                 _polling_thread = 0;                 _polling_thread = 0;
             }             }
             _meta_dispatcher->_shutdown_routed_queue();  
             delete _meta_dispatcher;             delete _meta_dispatcher;
             _meta_dispatcher = 0;             _meta_dispatcher = 0;
  
             delete _thread_pool;             delete _thread_pool;
             _thread_pool = 0;             _thread_pool = 0;
         }         }
     } // mutex unlocks here      }
  
     // Clean up any extra stuff on the queue.     // Clean up any extra stuff on the queue.
     AsyncOpNode* op = 0;     AsyncOpNode* op = 0;
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     }     }
 } }
  
 void MessageQueueService::_shutdown_incoming_queue()  
 {  
     if (_incoming_queue_shutdown.get() > 0)  
         return;  
   
     AsyncIoctl *msg = new AsyncIoctl(  
         0,  
         _queueId,  
         _queueId,  
         true,  
         AsyncIoctl::IO_CLOSE,  
         0,  
         0);  
   
     msg->op = get_op();  
     msg->op->_flags = ASYNC_OPFLAGS_FIRE_AND_FORGET;  
   
     msg->op->_op_dest = this;  
     msg->op->_request.reset(msg);  
     if (_incoming.enqueue(msg->op))  
     {  
         _polling_sem.signal();  
     }  
     else  
     {  
         // This means the queue has already been shut-down (happens  when there  
         // are two AsyncIoctrl::IO_CLOSE messages generated and one got first  
         // processed.  
         delete msg;  
     }  
 }  
   
   
 void MessageQueueService::enqueue(Message* msg) void MessageQueueService::enqueue(Message* msg)
 { {
     PEG_METHOD_ENTER(TRC_MESSAGEQUEUESERVICE, "MessageQueueService::enqueue()");     PEG_METHOD_ENTER(TRC_MESSAGEQUEUESERVICE, "MessageQueueService::enqueue()");
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             if (operation)             if (operation)
             {             {
                operation->_service_ptr = service;  
                service->_handle_incoming_operation(operation);                service->_handle_incoming_operation(operation);
             }             }
         } while (operation);         } while (operation);
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     return 0;     return 0;
 } }
  
   
 void MessageQueueService::_sendwait_callback(  
     AsyncOpNode* op,  
     MessageQueue* q,  
     void *parm)  
 {  
     op->_client_sem.signal();  
 }  
   
   
 // callback function is responsible for cleaning up all resources // callback function is responsible for cleaning up all resources
 // including op, op->_callback_node, and op->_callback_ptr // including op, op->_callback_node, and op->_callback_ptr
 void MessageQueueService::_handle_async_callback(AsyncOpNode* op) void MessageQueueService::_handle_async_callback(AsyncOpNode* op)
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 void MessageQueueService::_handle_async_request(AsyncRequest *req) void MessageQueueService::_handle_async_request(AsyncRequest *req)
 { {
     MessageType type = req->getType();     MessageType type = req->getType();
     if (type == ASYNC_IOCTL)      if (type == ASYNC_IOCLOSE)
     {     {
         handle_AsyncIoctl(static_cast<AsyncIoctl *>(req));          handle_AsyncIoClose(static_cast<AsyncIoClose*>(req));
     }     }
     else if (type == ASYNC_CIMSERVICE_START)     else if (type == ASYNC_CIMSERVICE_START)
     {     {
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     cimom::_make_response(req, code);     cimom::_make_response(req, code);
 } }
  
   
 void MessageQueueService::_completeAsyncResponse( void MessageQueueService::_completeAsyncResponse(
     AsyncRequest* request,     AsyncRequest* request,
     AsyncReply* reply)     AsyncReply* reply)
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 Boolean MessageQueueService::accept_async(AsyncOpNode* op) Boolean MessageQueueService::accept_async(AsyncOpNode* op)
 { {
       if (!_isRunning)
       {
           // Don't accept any messages other than start.
           if (op->_request.get()->getType() != ASYNC_CIMSERVICE_START)
           {
               return false;
           }
       }
   
     if (_incoming_queue_shutdown.get() > 0)     if (_incoming_queue_shutdown.get() > 0)
         return false;         return false;
   
     if (_polling_thread == NULL)     if (_polling_thread == NULL)
     {     {
           PEGASUS_ASSERT(_polling_list);
         _polling_thread = new Thread(         _polling_thread = new Thread(
             polling_routine,             polling_routine,
             reinterpret_cast<void *>(_get_polling_list()),              reinterpret_cast<void *>(_polling_list),
             false);             false);
         ThreadStatus tr = PEGASUS_THREAD_OK;         ThreadStatus tr = PEGASUS_THREAD_OK;
         while ( (tr =_polling_thread->run()) != PEGASUS_THREAD_OK)         while ( (tr =_polling_thread->run()) != PEGASUS_THREAD_OK)
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     return false;     return false;
 } }
  
 void MessageQueueService::handle_AsyncIoctl(AsyncIoctl* req)  void MessageQueueService::handle_AsyncIoClose(AsyncIoClose *req)
 {  
     switch (req->ctl)  
     {  
         case AsyncIoctl::IO_CLOSE:  
         {         {
             MessageQueueService *service =             MessageQueueService *service =
                 static_cast<MessageQueueService *>(req->op->_service_ptr);          static_cast<MessageQueueService*>(req->op->_op_dest);
  
 #ifdef MESSAGEQUEUESERVICE_DEBUG #ifdef MESSAGEQUEUESERVICE_DEBUG
             PEGASUS_STD(cout) << service->getQueueName() <<             PEGASUS_STD(cout) << service->getQueueName() <<
                 " Received AsyncIoctl::IO_CLOSE " << PEGASUS_STD(endl);          " Received AsyncIoClose " << PEGASUS_STD(endl);
 #endif #endif
       // set the closing flag, don't accept any more messages
       service->_incoming_queue_shutdown = 1;
  
             // respond to this message. this is fire and forget, so we             // respond to this message. this is fire and forget, so we
             // don't need to delete anything.             // don't need to delete anything.
             // this takes care of two problems that were being found             // this takes care of two problems that were being found
             // << Thu Oct  9 10:52:48 2003 mdd >>             // << Thu Oct  9 10:52:48 2003 mdd >>
             _make_response(req, async_results::OK);             _make_response(req, async_results::OK);
             // ensure we do not accept any further messages  
   
             // ensure we don't recurse on IO_CLOSE  
             if (_incoming_queue_shutdown.get() > 0)  
                 break;  
   
             // set the closing flag  
             service->_incoming_queue_shutdown = 1;  
             // empty out the queue  
             while (1)  
             {  
                 AsyncOpNode* operation = 0;  
                 try  
                 {  
                     operation = service->_incoming.dequeue();  
                 }  
                 catch (...)  
                 {  
                     break;  
                 }  
                 if (operation)  
                 {  
                     operation->_service_ptr = service;  
                     service->_handle_incoming_operation(operation);  
                 }  
                 else  
                     break;  
             } // message processing loop  
   
             // shutdown the AsyncQueue  
             service->_incoming.close();  
             return;  
         }  
   
         default:  
             _make_response(req, async_results::CIM_NAK);  
     }  
 } }
  
 void MessageQueueService::handle_CimServiceStart(CimServiceStart* req) void MessageQueueService::handle_CimServiceStart(CimServiceStart* req)
Line 662 
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     void* callback_ptr,     void* callback_ptr,
     Uint32 flags)     Uint32 flags)
 { {
     PEGASUS_ASSERT(op != 0 && callback != 0);      PEGASUS_ASSERT(op != 0);
       PEGASUS_ASSERT((callback == 0) ==
           (flags == ASYNC_OPFLAGS_PSEUDO_CALLBACK));
  
     // destination of this message     // destination of this message
     op->_op_dest = MessageQueue::lookup(destination);     op->_op_dest = MessageQueue::lookup(destination);
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     op->_callback_response_q = callback_response_q;     op->_callback_response_q = callback_response_q;
     // user data for callback     // user data for callback
     op->_callback_ptr = callback_ptr;     op->_callback_ptr = callback_ptr;
     // I am the originator of this request  
     op->_callback_request_q = this;  
  
     return  _meta_dispatcher->route_async(op);     return  _meta_dispatcher->route_async(op);
 } }
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     _sendAsync(     _sendAsync(
         request->op,         request->op,
         request->dest,         request->dest,
         _sendwait_callback,          0,
         this,         this,
         (void *)0,         (void *)0,
         ASYNC_OPFLAGS_PSEUDO_CALLBACK);         ASYNC_OPFLAGS_PSEUDO_CALLBACK);
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Line 708 
     return rpl;     return rpl;
 } }
  
 Uint32 MessageQueueService::find_service_qid(const String &name)  Uint32 MessageQueueService::find_service_qid(const char* name)
 { {
     MessageQueue *queue = MessageQueue::lookup((const char*)name.getCString());      MessageQueue* queue = MessageQueue::lookup(name);
     PEGASUS_ASSERT(queue);     PEGASUS_ASSERT(queue);
     return queue->getQueueId();     return queue->getQueueId();
 } }
  
 MessageQueueService::PollingList* MessageQueueService::_get_polling_list()  void MessageQueueService::_removeFromPollingList(MessageQueueService *service)
 { {
     _polling_list_mutex.lock();     _polling_list_mutex.lock();
       _polling_list->remove(service);
     if (!_polling_list)  
         _polling_list = new PollingList;  
   
     _polling_list_mutex.unlock();     _polling_list_mutex.unlock();
   
     return _polling_list;  
 } }
  
 PEGASUS_NAMESPACE_END PEGASUS_NAMESPACE_END

Legend:
Removed from v.1.151  
changed lines
  Added in v.1.163
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