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BUG#: 8252
TITLE: metadispatcher thread may crash while monitoring the dead service
DESCRIPTION: created service registration with metadispatcher so that metadispatcher routes messages to services only if their registration is valid.

//%LICENSE////////////////////////////////////////////////////////////////
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// this work for additional information regarding copyright ownership.
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// Source License; you may not use this file except in compliance with the
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// copy of this software and associated documentation files (the "Software"),
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#ifndef Pegasus_Cimom_h
#define Pegasus_Cimom_h

#include <Pegasus/Common/Config.h>
#include <Pegasus/Common/InternalException.h>
#include <Pegasus/Common/MessageQueue.h>
#include <Pegasus/Common/AsyncQueue.h>
#include <Pegasus/Common/Thread.h>
#include <Pegasus/Common/ArrayInternal.h>
#include <Pegasus/Common/AsyncOpNode.h>
#include <Pegasus/Common/CimomMessage.h>
#include <Pegasus/Common/MessageQueueService.h>
//#include <Pegasus/Server/CIMOperationRequestDispatcher.h>
//#include <Pegasus/Server/CIMOperationResponseEncoder.h>
//#include <Pegasus/Server/CIMOperationRequestDecoder.h>
#include <Pegasus/Common/Linkage.h>
#include <Pegasus/Common/List.h>
#include <Pegasus/Common/Mutex.h>
#include <Pegasus/Common/Time.h>
#include <Pegasus/Common/HashTable.h>

PEGASUS_NAMESPACE_BEGIN

extern const Uint32 CIMOM_Q_ID;

class MessageQueueService;

class PEGASUS_COMMON_LINKAGE cimom : public MessageQueue
{
public:
    cimom();
    virtual ~cimom();

    AsyncOpNode* get_cached_op();
    void cache_op(AsyncOpNode* op);

    Boolean registerCIMService(MessageQueueService *service);
    Boolean deregisterCIMService(MessageQueueService *service);

    typedef HashTable <MessageQueueService*, Boolean, EqualFunc <void*>,
        HashFunc <void*> > RegisteredServicesTable;

protected:
      static void _make_response(Message* req, Uint32 code);
      static void _completeAsyncResponse(
          AsyncRequest* request,
          AsyncReply* reply);
      static void _complete_op_node(AsyncOpNode* op);

private:
    AsyncQueue<AsyncOpNode> _routed_ops;

    static ThreadReturnType PEGASUS_THREAD_CDECL _routing_proc(void*);

    Thread _routing_thread;

    void _handle_cimom_op(AsyncOpNode* op);

    virtual void handleEnqueue();

    Boolean route_async(AsyncOpNode* operation);

    inline Boolean _monitorCIMService(MessageQueueService *service);
    inline void _releaseCIMService(MessageQueueService *service);

    AtomicInt _die;
    AtomicInt _routed_queue_shutdown;

    static cimom *_global_this;


    static RegisteredServicesTable _registeredServicesTable;
    static Mutex _registeredServicesTableLock;

    friend class MessageQueueService;
};

PEGASUS_NAMESPACE_END

#endif // Pegasus_Cimom_h