Return to JMPILocalProviderManager.cpp CVS log

Up to [Pegasus] / pegasus / src / Pegasus / ProviderManager2 / JMPI

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
// 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)
//              Mike Day IBM Corporation (mdday@us.ibm.com)
//              Adrian Schuur, schuur@de.ibm.com
//
//%/////////////////////////////////////////////////////////////////////////////

#include "JMPILocalProviderManager.h"

#include <Pegasus/Common/Time.h>
#include <Pegasus/Common/Constants.h>
#include <Pegasus/Common/Tracer.h>
#include <Pegasus/Common/PegasusVersion.h>

#include <Pegasus/ProviderManager2/JMPI/JMPIProvider.h>
#include <Pegasus/ProviderManager2/JMPI/JMPIProviderModule.h>
#include <Pegasus/ProviderManager2/ProviderManagerService.h>

PEGASUS_USING_STD;
PEGASUS_NAMESPACE_BEGIN

int JMPILocalProviderManager::trace=0;

#ifdef PEGASUS_DEBUG
#define DDD(x) if (JMPILocalProviderManager::trace) x;
#else
#define DDD(x)
#endif

JMPILocalProviderManager::JMPILocalProviderManager(void)
    : _idle_timeout(IDLE_LIMIT)
{
#ifdef PEGASUS_DEBUG
   if (getenv("PEGASUS_JMPI_TRACE"))
      JMPILocalProviderManager::trace=1;
   else
      JMPILocalProviderManager::trace=0;
#else
   JMPILocalProviderManager::trace=0;
#endif
}

JMPILocalProviderManager::~JMPILocalProviderManager(void)
{
    Uint32 ccode;

    _provider_ctrl(UNLOAD_ALL_PROVIDERS, this, &ccode);
}

Sint32 JMPILocalProviderManager::_provider_ctrl(CTRL code, void *parm, void *ret)
{
    static Uint32 quantum;
    PEG_METHOD_ENTER(TRC_PROVIDERMANAGER, "_provider_ctrl");

    Sint32 ccode = 0;
    CTRL_STRINGS *parms = reinterpret_cast<CTRL_STRINGS *>(parm);

    switch(code)
    {

    case GET_PROVIDER:
        {
            PEG_TRACE_STRING(TRC_PROVIDERMANAGER,
                             Tracer::LEVEL2,
                             "_provider_ctrl::GET_PROVIDER");

            String providerName = *(parms->providerName);
            String moduleFileName = *(parms->fileName);
            String interfaceName = *(parms->interfaceName);

            DDD(PEGASUS_STD(cout)
                <<"--- JMPILocalProviderManager::_provider_ctrl: GET_PROVIDER providerName = "
                <<providerName
                <<", moduleFileName = "
                <<moduleFileName
                <<", interfaceName = "
                <<interfaceName
                <<PEGASUS_STD(endl));

            if (providerName.size () == 0)
            {
               throw NullPointer();
            }

            JMPIProvider::OpProviderHolder* ph =
               reinterpret_cast< JMPIProvider::OpProviderHolder* >( ret );
            JMPIProviderModule *newModule = NULL;
            JMPIProviderModule *module = NULL;
            JMPIProvider *newProvider = NULL;
            JMPIProvider *provider = NULL;
            ProviderVector base;

            try
            {
               AutoMutex lock (_providerTableMutex);

               if (true == _providers.lookup(providerName, provider))
               {
                   PEG_TRACE_STRING(TRC_PROVIDERMANAGER,
                                    Tracer::LEVEL4,
                                    "Found JMPIProvider "
                                    + providerName
                                    + " in JMPIProvider Manager Cache");
                   DDD(PEGASUS_STD(cout)
                       <<"--- JMPILocalProviderManager::_provider_ctrl: Found "
                       <<providerName
                       <<" in JMPIProvider Manager Cache"
                       <<PEGASUS_STD(endl));
                   DDD(PEGASUS_STD(cout)
                       <<"--- JMPILocalProviderManager::_provider_ctrl:"
                         " setting provider to "
                       <<PEGASUS_STD(hex)
                       <<(int)provider
                       <<PEGASUS_STD(dec)
                       <<PEGASUS_STD(endl));

                   ph->SetProvider(provider);

///////////////////ph->GetProvider().update_idle_timer();
                   break;
               }

               PEG_TRACE_STRING(TRC_PROVIDERMANAGER,
                                Tracer::LEVEL4,
                                "Creating JMPIProvider " + providerName );
               DDD(PEGASUS_STD(cout)
                   <<"--- JMPILocalProviderManager::_provider_ctrl: Creating "
                   <<providerName
                   <<PEGASUS_STD(endl));

               if (false == _modules.lookup(moduleFileName, module))
               {
                   PEG_TRACE_STRING(TRC_PROVIDERMANAGER,
                                    Tracer::LEVEL4,
                                    "Creating JMPIProvider Module "
                                    + moduleFileName );
                   DDD(PEGASUS_STD(cout)
                       <<"--- JMPILocalProviderManager::_provider_ctrl: "
                         "Creating module "
                         <<moduleFileName
                         <<PEGASUS_STD(endl));

                   newModule = new JMPIProviderModule(moduleFileName,
                                                      interfaceName);

                   if (0 == newModule)
                   {
                       PEG_TRACE_STRING(TRC_PROVIDERMANAGER,
                                        Tracer::LEVEL4,
                                        "new JMPIProviderModule is NULL!");
                       DDD(PEGASUS_STD(cout)
                           <<"--- JMPILocalProviderManager::_provider_ctrl:"
                             " new JMPIProviderModule is NULL!"
                             <<PEGASUS_STD(endl));

                       throw NullPointer();
                   }

                   module = newModule;

                   _modules.insert(moduleFileName, module);
               }
               else
               {
                   PEG_TRACE_STRING(TRC_PROVIDERMANAGER,
                                    Tracer::LEVEL4,
                                    "Using Cached JMPIProvider Module "
                                    + moduleFileName);
                   DDD(PEGASUS_STD(cout)
                       <<"--- JMPILocalProviderManager::_provider_ctrl: "
                       "Using cached "
                       <<moduleFileName
                       <<PEGASUS_STD(endl));
               }

               PEG_TRACE_STRING(TRC_PROVIDERMANAGER,
                                Tracer::LEVEL4,
                                "Loading/Linking JMPIProvider Module "
                                + moduleFileName );
               DDD(PEGASUS_STD(cout)
                   <<"--- JMPILocalProviderManager::_provider_ctrl:"
                     " Loading/Linking module "
                     <<moduleFileName
                     <<PEGASUS_STD(endl));

               try
               {
                   base = module->load(moduleFileName);
               }
               catch(...)
               {
                   PEG_TRACE_STRING(TRC_PROVIDERMANAGER,
                                    Tracer::LEVEL4,
                                    "Exception caught Loading/Linking"
                                    " JMPIProvider Module "
                                    + moduleFileName );
                   DDD(PEGASUS_STD(cout)
                       <<"--- JMPILocalProviderManager::_provider_ctrl: "
                       "Exception caught Loading/Linking module "
                       <<moduleFileName
                       <<PEGASUS_STD(endl));

                   throw;
               }

               // create provider module
               newProvider = new JMPIProvider(providerName, module, &base);
               if (0 == newProvider)
               {
                   PEG_TRACE_STRING(TRC_PROVIDERMANAGER,
                                    Tracer::LEVEL4,
                                    "new JMPIProvider is NULL!");
                   DDD(PEGASUS_STD(cout)
                       <<"--- JMPILocalProviderManager::_provider_ctrl: "
                         "new JMPIProvider is NULL!"
                       <<PEGASUS_STD(endl));

                   throw NullPointer();
               }

               provider = newProvider;

               if (0 == (provider->_cimom_handle = new CIMOMHandle()))
               {
                   PEG_TRACE_STRING(TRC_PROVIDERMANAGER,
                                    Tracer::LEVEL4,
                                    "_cimom_handle is NULL!");
                   DDD(PEGASUS_STD(cout)
                       <<"--- JMPILocalProviderManager::_provider_ctrl:"
                         " _cimom_handle is NULL!"
                         <<PEGASUS_STD(endl));

                   throw NullPointer();
               }

               provider->_quantum = 0;

               {
                  AutoMutex lock(provider->_statusMutex);

                  PEG_TRACE_STRING(TRC_PROVIDERMANAGER,
                                   Tracer::LEVEL2,
                                   "Loading JMPIProvider "
                                   +  provider->_name);
                  DDD(PEGASUS_STD(cout)
                      <<"--- JMPILocalProviderManager::_provider_ctrl:"
                        " Loading "
                        <<provider->_name
                        <<PEGASUS_STD(endl));
                  try
                  {
                      provider->initialize(*(provider->_cimom_handle));
                  }
                  catch(CIMException &cimExcept)
                  {
                      PEG_TRACE_STRING(
                          TRC_PROVIDERMANAGER,
                          Tracer::LEVEL4,
                          "Calling provider->initialize caused exception:"
                          +cimExcept.getMessage()
                          );
                      DDD(PEGASUS_STD(cout)
                          <<"--- JMPILocalProviderManager::_provider_ctrl:"
                            " Exception caught calling initialize!"
                            <<PEGASUS_STD(endl));
                      throw;
                  }                      
                  catch(Exception &except)
                  {
                      PEG_TRACE_STRING(
                          TRC_PROVIDERMANAGER,
                          Tracer::LEVEL4,
                          "Calling provider->initialize caused exception:"
                          +except.getMessage()
                          );
                      DDD(PEGASUS_STD(cout)
                          <<"--- JMPILocalProviderManager::_provider_ctrl:"
                            " Exception caught calling initialize!"
                            <<PEGASUS_STD(endl));
                      throw PEGASUS_CIM_EXCEPTION(CIM_ERR_FAILED, 
                                                  except.getMessage());
                  }
                  catch(...)
                  {
                      PEG_TRACE_STRING(TRC_PROVIDERMANAGER,
                                       Tracer::LEVEL4,
                                       "Exception caught calling initialize!");
                      DDD(PEGASUS_STD(cout)
                          <<"--- JMPILocalProviderManager::_provider_ctrl:"
                            " Exception caught calling initialize!"
                            <<PEGASUS_STD(endl));

                      throw UninitializedObjectException();
                  }
               }

///////////////provider->update_idle_timer();

               _providers.insert(providerName, provider);
            }
            catch (...)
            {
               if (newModule)
               {
                  _modules.remove(moduleFileName);
               }

               delete newModule;

               if (newProvider)
               {
                  delete newProvider->_cimom_handle;
               }

               delete newProvider;

               throw;
            }

            DDD(PEGASUS_STD(cout)
                <<"--- JMPILocalProviderManager::_provider_ctrl:"
                  "setting provider to "
                  <<PEGASUS_STD(hex)
                  <<(int)provider
                  <<PEGASUS_STD(dec)
                  <<PEGASUS_STD(endl));

            ph->SetProvider( provider );
            break;
        }

    case UNLOAD_PROVIDER:
        {
            DDD(PEGASUS_STD(cout)
                <<"--- JMPILocalProviderManager::_provider_ctrl: "
                  "UNLOAD_PROVIDER"
                  <<PEGASUS_STD(endl));
            break;
        }

    case LOOKUP_PROVIDER:
        {
            PEG_TRACE_STRING(TRC_PROVIDERMANAGER,
                             Tracer::LEVEL2,
                             "_provider_ctrl::LOOKUP_PROVIDER");
            DDD(PEGASUS_STD(cout)
                <<"--- JMPILocalProviderManager::_provider_ctrl: "
                "LOOKUP_PROVIDER "
                <<*(parms->providerName)
                <<PEGASUS_STD(endl));

            AutoMutex lock (_providerTableMutex);

            if (true == _providers.lookup(*(parms->providerName),
                                   *(reinterpret_cast<JMPIProvider * *>(ret))))
            {
                PEG_TRACE_STRING(TRC_PROVIDERMANAGER,
                                 Tracer::LEVEL4,
                                 "Found JMPIProvider in cache: "
                                 + *(parms->providerName));

////////////////(*(reinterpret_cast<JMPIProvider * *>(ret)))->update_idle_timer();
            }
            else
            {
                PEG_TRACE_STRING(TRC_PROVIDERMANAGER,
                                 Tracer::LEVEL4,
                                 "Could not find  JMPIProvider in cache: "
                                 + *(parms->providerName));
                ccode = -1;
            }

            break;
        }

    case LOOKUP_MODULE:
        {
            PEG_TRACE_STRING(TRC_PROVIDERMANAGER,
                             Tracer::LEVEL2,
                             "_provider_ctrl::LOOKUP_MODULE");
            DDD(PEGASUS_STD(cout)
                <<"--- JMPILocalProviderManager::_provider_ctrl: "
                  "LOOKUP_MODULE "
                <<*(parms->fileName)
                <<PEGASUS_STD(endl));

            AutoMutex lock (_providerTableMutex);

            if (false  == _modules.lookup(*(parms->fileName),
                *(reinterpret_cast<JMPIProviderModule * *>(ret))))
            {
                PEG_TRACE_STRING(TRC_PROVIDERMANAGER, Tracer::LEVEL4,
                    "Could not find  JMPIProvider Module in cache: " +
                    *(parms->fileName));
                ccode = -1;
            }

            break;
        }

    case INSERT_PROVIDER:
        {
            PEG_TRACE_STRING(TRC_PROVIDERMANAGER,
                             Tracer::LEVEL2,
                             "_provider_ctrl::INSERT_PROVIDER");
            DDD(PEGASUS_STD(cout)
                <<"--- JMPILocalProviderManager::_provider_ctrl: "
                  "INSERT_PROVIDER "
                <<*(parms->providerName)
                <<PEGASUS_STD(endl));

            AutoMutex lock (_providerTableMutex);

            if (false  == _providers.insert(*(parms->providerName),
                                    *reinterpret_cast<JMPIProvider * *>(parm)))
                ccode = -1;
            break;
        }

    case INSERT_MODULE:
        {
            PEG_TRACE_STRING(TRC_PROVIDERMANAGER,
                             Tracer::LEVEL2,
                             "_provider_ctrl::INSERT_MODULE");
            DDD(PEGASUS_STD(cout)
                <<"--- JMPILocalProviderManager::_provider_ctrl: "
                  "INSERT_MODULE "
                <<*(parms->fileName)
                <<PEGASUS_STD(endl));

            AutoMutex lock (_providerTableMutex);

            if(false  == _modules.insert(*(parms->fileName),
                              *reinterpret_cast<JMPIProviderModule * *>(parm)))
                ccode = -1;
            break;
        }

    case REMOVE_PROVIDER:
        {
            PEG_TRACE_STRING(TRC_PROVIDERMANAGER,
                             Tracer::LEVEL2,
                             "_provider_ctrl::REMOVE_PROVIDER");
            DDD(PEGASUS_STD(cout)
                <<"--- JMPILocalProviderManager::_provider_ctrl: "
                  "REMOVE_PROVIDER "
                <<*(parms->providerName)
                <<PEGASUS_STD(endl));

            AutoMutex lock (_providerTableMutex);

            if (false == _providers.remove(*(parms->providerName)))
                ccode = -1;
            break;
        }

    case REMOVE_MODULE:
        {
            PEG_TRACE_STRING(TRC_PROVIDERMANAGER,
                             Tracer::LEVEL2,
                             "_provider_ctrl::REMOVE_MODULE");
            DDD(PEGASUS_STD(cout)
                <<"--- JMPILocalProviderManager::_provider_ctrl: REMOVE_MODULE "
                <<*(parms->fileName)
                <<PEGASUS_STD(endl));

            AutoMutex lock (_providerTableMutex);

            if (false == _modules.remove(*(parms->fileName)))
                ccode = -1;
            break;
        }

    case UNLOAD_ALL_PROVIDERS:
        {
           DDD(PEGASUS_STD(cout)
               <<"--- JMPILocalProviderManager::_provider_ctrl: "
                 "UNLOAD_ALL_PROVIDERS"
               <<PEGASUS_STD(endl));

           JMPIjvm::destroyJVM();
           break;
        }

    case UNLOAD_IDLE_PROVIDERS:
         {
           DDD(PEGASUS_STD(cout)
               <<"--- JMPILocalProviderManager::_provider_ctrl: "
                 "UNLOAD_IDLE_PROVIDERS"
               <<PEGASUS_STD(endl));
           break;
        }

    case UNLOAD_IDLE_MODULES:
        {
           DDD(PEGASUS_STD(cout)
               <<"--- JMPILocalProviderManager::_provider_ctrl: "
                 "UNLOAD_IDLE_MODULES"
               <<PEGASUS_STD(endl));
           break;
        }

    default:
        {
           DDD(PEGASUS_STD(cout)
               <<"--- JMPILocalProviderManager::_provider_ctrl: unknown! "
               <<code
               <<PEGASUS_STD(endl));
           ccode = -1;
           break;
        }
    }
    PEG_METHOD_EXIT();
    return(ccode);
}

JMPIProvider * JMPILocalProviderManager::_getResolver
   (const String & fileName, const String & interfaceType)
{
    JMPIProvider *pr;
    String id(interfaceType+String("::")+fileName);
    if (true == _resolvers.lookup(id,pr)) {
       return pr;
    }
    return NULL;
}

JMPIProvider::OpProviderHolder JMPILocalProviderManager::getProvider(
    const String & fileName,
    const String & providerName,
    const String & interfaceName)
{
    JMPIProvider::OpProviderHolder ph;
    CTRL_STRINGS strings;
    Sint32 ccode;
    strings.fileName = &fileName;
    strings.providerName = &providerName;
    strings.interfaceName = &interfaceName;

    PEG_METHOD_ENTER(TRC_PROVIDERMANAGER, "ProviderManager::getProvider");

    try {
        ccode = _provider_ctrl( GET_PROVIDER, &strings, &ph );
    }
    catch (const Exception &e) {
        DDD(PEGASUS_STD(cout)
            <<"--- JMPILocalProviderManager::getProvider: loading proxy: "
            <<e.getMessage()
            <<PEGASUS_STD(endl));
        PEG_METHOD_EXIT();
        throw;
    }
    catch(...) {
        DDD(PEGASUS_STD(cout)
            <<"--- JMPILocalProviderManager::getProvider: catch (...) "
            <<PEGASUS_STD(endl));
        PEG_METHOD_EXIT();
        throw;
    }

    PEG_METHOD_EXIT();
    return(ph);
}

void JMPILocalProviderManager::unloadProvider(
    const String & fileName,
    const String & providerName)
{
    CTRL_STRINGS strings;
    PEG_METHOD_ENTER(TRC_PROVIDERMANAGER, "ProviderManager::unloadProvider");
    strings.fileName = &fileName;
    strings.providerName = &providerName;
    _provider_ctrl(UNLOAD_PROVIDER, &strings, (void *)0);
    PEG_METHOD_EXIT();
}

void JMPILocalProviderManager::shutdownAllProviders(void)
{
    PEG_METHOD_ENTER(TRC_PROVIDERMANAGER, "ProviderManager::shutdownAllProviders");
    _provider_ctrl(UNLOAD_ALL_PROVIDERS, (void *)this, (void *)0);
    PEG_METHOD_EXIT();
}


Boolean JMPILocalProviderManager::hasActiveProviders()
{
    PEG_METHOD_ENTER(TRC_PROVIDERMANAGER, "ProviderManager::hasActiveProviders");

    AutoMutex lock (_providerTableMutex);

    Boolean fRet = _providers.size() > 0;

    PEG_METHOD_EXIT();
    return fRet;
}

void JMPILocalProviderManager::unloadIdleProviders()
{
    PEG_METHOD_ENTER(TRC_PROVIDERMANAGER,
        "ProviderManager::unloadIdleProviders");

    static struct timeval first = {0,0}, now, last = {0,0};

    if(first.tv_sec == 0)
    {
        Time::gettimeofday(&first);
    }
    Time::gettimeofday(&now);

    if (((now.tv_sec - first.tv_sec) > IDLE_LIMIT) &&
       ((now.tv_sec - last.tv_sec) > IDLE_LIMIT))
    {
        Time::gettimeofday(&last);
        PEG_TRACE_STRING(TRC_PROVIDERMANAGER, Tracer::LEVEL4,
            "Checking for Idle providers to unload.");
        try
        {
            AutoMutex lock(_providerTableMutex);

            _provider_ctrl(UNLOAD_IDLE_PROVIDERS, this, (void *)0);
        }
        catch(...)
        {
            PEG_TRACE_STRING(TRC_PROVIDERMANAGER, Tracer::LEVEL2,
                "Caught unexpected exception from UNLOAD_IDLE_PROVIDERS.");
        }
    }
    PEG_METHOD_EXIT();
}

Array <JMPIProvider *>
JMPILocalProviderManager::getIndicationProvidersToEnable ()
{
    PEG_METHOD_ENTER (TRC_PROVIDERMANAGER,
        "JMPILocalProviderManager::getIndicationProvidersToEnable");

    Array <JMPIProvider *> enableProviders;

    try
    {
        AutoMutex lock (_providerTableMutex);

        Tracer::trace (TRC_PROVIDERMANAGER, Tracer::LEVEL4,
            "Number of providers in _providers table = %d", _providers.size ());

        //
        // Iterate through the _providers table
        //
        for (ProviderTable::Iterator i = _providers.start (); i != 0; i++)
        {
            //
            //  Enable any indication provider with current subscriptions
            //
            JMPIProvider * provider = i.value ();
            if (provider->testSubscriptions ())
            {
                enableProviders.append (provider);
            }
        }
    }
    catch (CIMException & e)
    {
        PEG_TRACE_STRING (TRC_DISCARDED_DATA, Tracer::LEVEL2,
            "CIMException: " + e.getMessage ());
    }
    catch (Exception & e)
    {
        PEG_TRACE_STRING (TRC_DISCARDED_DATA, Tracer::LEVEL2,
            "Exception: " + e.getMessage ());
    }
    catch (...)
    {
        PEG_TRACE_STRING (TRC_DISCARDED_DATA, Tracer::LEVEL2,
            "Unexpected error in getIndicationProvidersToEnable");
    }

    Tracer::trace (TRC_PROVIDERMANAGER, Tracer::LEVEL4,
        "Number of indication providers to enable = %d",
        enableProviders.size ());

    PEG_METHOD_EXIT ();
    return enableProviders;
}


PEGASUS_NAMESPACE_END