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BUG#: 5314
TITLE: IPC Refactoring

DESCRIPTION: This patch cleans up the IPC related classes. It (1) reorganizes
related classes into their own headers, (2) makes the mutex class recursive to
eliminate recursive lock exclusion logic, (3) reimplements condition variables,
renames dozens of global functions.

//%2006////////////////////////////////////////////////////////////////////////
//
// Copyright (c) 2000, 2001, 2002 BMC Software; Hewlett-Packard Development
// Company, L.P.; IBM Corp.; The Open Group; Tivoli Systems.
// Copyright (c) 2003 BMC Software; Hewlett-Packard Development Company, L.P.;
// IBM Corp.; EMC Corporation, The Open Group.
// Copyright (c) 2004 BMC Software; Hewlett-Packard Development Company, L.P.;
// IBM Corp.; EMC Corporation; VERITAS Software Corporation; The Open Group.
// 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
// of this software and associated documentation files (the "Software"), to
// deal in the Software without restriction, including without limitation the
// rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
// sell copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
// 
// THE ABOVE COPYRIGHT NOTICE AND THIS PERMISSION NOTICE SHALL BE INCLUDED IN
// ALL COPIES OR SUBSTANTIAL PORTIONS OF 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
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//==============================================================================
//
// Author: Heather Sterling (hsterl@us.ibm.com)
//
// Modified By: 
//
//%/////////////////////////////////////////////////////////////////////////////

#ifndef Pegasus_ConsumerManager_h
#define Pegasus_ConsumerManager_h

#include <Pegasus/Common/Config.h>
#include <Pegasus/Common/HashTable.h>
#include <Pegasus/Common/OptionManager.h>
#include <Pegasus/Common/ArrayInternal.h>
#include <Pegasus/Common/CIMInstance.h>
#include <Pegasus/Consumer/CIMIndicationConsumer.h>
#include <Pegasus/Common/System.h>
#include <Pegasus/DynListener/Linkage.h>

#include "ConsumerModule.h"
#include "DynamicConsumer.h"

PEGASUS_NAMESPACE_BEGIN

/** The ConsumerManager class is responsible for managing all of the consumers.  It is also responsible for
 *  synchronizing consumer operations.
 */

class PEGASUS_DYNLISTENER_LINKAGE ConsumerManager
{
public:

    ConsumerManager(const String& consumerDir, const String& consumerConfigDir, Boolean enableConsumerUnload, Uint32 idleTimeout);

    virtual ~ConsumerManager();

    String getConsumerDir();

    String getConsumerConfigDir();

    Boolean getEnableConsumerUnload();

    Uint32 getIdleTimeout();

    Boolean hasLoadedConsumers();

    Boolean hasActiveConsumers();

    DynamicConsumer* getConsumer(const String& consumerName);

    void unloadConsumer(const String& consumerName);

    void unloadAllConsumers();

    void unloadIdleConsumers();

private:

    typedef HashTable<String, DynamicConsumer *, EqualFunc<String>,  HashFunc<String> > ConsumerTable;

    typedef HashTable<String, ConsumerModule *, EqualFunc<String>, HashFunc<String> > ModuleTable;

    //consumer queue
    ConsumerTable _consumers;
    Mutex _consumerTableMutex;

    //consumer module queue
    ModuleTable _modules;
    Mutex _moduleTableMutex;

    //config properties
    String _consumerDir;
    String _consumerConfigDir;
    Boolean _enableConsumerUnload;
    Uint32 _idleTimeout; //ms
    Boolean _forceShutdown;

	//ATTN: Bugzilla 3765 - Uncomment when OptionManager has a reset capability
	//OptionManager _optionMgr;

    //global thread pool
    ThreadPool* _thread_pool;

    //worker thread
    static ThreadReturnType PEGASUS_THREAD_CDECL _worker_routine(void *param);


    //methods

    ConsumerModule* _lookupModule(const String & moduleFileName);
 
    String _getConsumerLibraryName(const String & consumerName);

    void _initConsumer(const String& consumerName, DynamicConsumer* consumer);

    void _unloadConsumers(Array<DynamicConsumer*> consumersToUnload);

    void _init();

    Array<IndicationDispatchEvent> _deserializeOutstandingIndications(const String& consumerName);

    void _serializeOutstandingIndications(const String& consumerName, Array<IndicationDispatchEvent> indications);

};

PEGASUS_NAMESPACE_END

#endif /* Pegasus_ConsumerManager_h */