//%2003////////////////////////////////////////////////////////////////////////
//
// 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.
//
// 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
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
//
//==============================================================================
//
// Author: Chip Vincent (cvincent@us.ibm.com)
//
// Modified By: Yi Zhou, Hewlett-Packard Company(yi_zhou@hp.com)
//              Jenny Yu, Hewlett-Packard Company(jenny_yu@hp.com)
//              Mike Day, IBM (mdday@us.ibm.com)
//              Dan Gorey, IBM djgorey@us.ibm.com
//
//%/////////////////////////////////////////////////////////////////////////////

#ifndef Pegasus_LocalProviderManager_h
#define Pegasus_LocalProviderManager_h

#include <Pegasus/Common/Config.h>
#include <Pegasus/Common/String.h>
#include <Pegasus/Common/IPC.h>
#include <Pegasus/Common/DQueue.h>
#include <Pegasus/Common/HashTable.h>
#include <Pegasus/Provider/CIMNullProvider.h>

#include <Pegasus/ProviderManager2/Lockable.h>
#include <Pegasus/ProviderManager2/Default/Provider.h>
#include <Pegasus/ProviderManager2/Default/ProviderModule.h>

#include <Pegasus/ProviderManager2/Default/Linkage.h>

PEGASUS_NAMESPACE_BEGIN

class PEGASUS_DEFPM_LINKAGE LocalProviderManager
{
public:
    LocalProviderManager(void);
    virtual ~LocalProviderManager(void);

public:
    OpProviderHolder getProvider(const String & fileName, const String & providerName,
        const String & interfaceName = String::EMPTY) ;

    void unloadProvider(const String & fileName, const String & providerName) ;

    void shutdownAllProviders(void) ;

    static PEGASUS_THREAD_RETURN PEGASUS_THREAD_CDECL provider_monitor(void *);

    void unload_idle_providers(void) ;

    Sint16 disableProvider(const String & fileName, const String & providerName);

private:
    enum CTRL
    {
        INSERT_PROVIDER,
        INSERT_MODULE,
        LOOKUP_PROVIDER,
        LOOKUP_MODULE,
        GET_PROVIDER,
        UNLOAD_PROVIDER,
        UNLOAD_ALL_PROVIDERS,
        UNLOAD_IDLE_PROVIDERS
    };

    typedef HashTable<String, Provider *,
        EqualFunc<String>,  HashFunc<String> > ProviderTable;

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


    typedef struct
    {
        const String *providerName;
        const String *fileName;
        const String *interfaceName;
    } CTRL_STRINGS;

    friend class ProviderManagerService;
    friend class ProviderModule;
    ProviderTable _providers;
    ModuleTable _modules;
    Uint32 _idle_timeout;

    Sint32 _provider_ctrl(CTRL code, void *parm, void *ret);
    AtomicInt _unload_idle_flag;

    Provider* _initProvider(Provider * provider,
                            const String & moduleFileName,
                            const String & interfaceName);

    void _unloadProvider(Provider * provider);

    Provider * _lookupProvider(const String & providerName);

    ProviderModule * _lookupModule(const String & moduleFileName,
                                  const String & interfaceName);

    Mutex _providerTableMutex;

protected:

};

PEGASUS_NAMESPACE_END

#endif
