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BUG#: 5485
TITLE: Simplify idle provider detection logic
DESCRIPTION: Move the tracking of the last activity time from the CIMOMHandle to the provider manager.  Remove the unused pending_operation() methods from the CIMOMHandle and provider managers.  Remove the unnecessary CIMOMHandleOpSemaphore class and its uses.  Simplify the Mutex lock requirements in the DefaultProviderManager.  Consolidate the provider unloading logic in the DefaultProviderManager.  Remove the pm_service_op_lock and op_counter classes, consolidating the operation counting in the ProviderOperationCounter class.  Augment the ProviderStatus interface to remove the need for friend relationships

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#include "ProviderStatus.h"
#include <Pegasus/Common/Time.h>
#include <Pegasus/Common/PegasusAssert.h>

PEGASUS_NAMESPACE_BEGIN

ProviderStatus::ProviderStatus()
{
    setInitialized(false);
}

ProviderStatus::~ProviderStatus()
{
}

Boolean ProviderStatus::isInitialized()
{
    AutoMutex lock(_statusMutex);
    return _isInitialized;
}

void ProviderStatus::setInitialized(Boolean initialized)
{
    AutoMutex lock(_statusMutex);
    _isInitialized = initialized;

    if (!_isInitialized)
    {
        _module = 0;
        _cimomHandle = 0;
        _currentOperations = 0;
        _indicationsEnabled = false;
        _currentSubscriptions = 0;
    }

    Time::gettimeofday(&_lastOperationEndTime);
}

ProviderModule* ProviderStatus::getModule() const
{
    return _module;
}

void ProviderStatus::setModule(ProviderModule* module)
{
    _module = module;
}

CIMOMHandle* ProviderStatus::getCIMOMHandle()
{
    return _cimomHandle;
}

void ProviderStatus::setCIMOMHandle(CIMOMHandle* cimomHandle)
{
    _cimomHandle = cimomHandle;
}

void ProviderStatus::getLastOperationEndTime(struct timeval* t)
{
    PEGASUS_ASSERT(t != 0);
    AutoMutex lock(_lastOperationEndTimeMutex);
    memcpy(t, &_lastOperationEndTime, sizeof(struct timeval));
}

Boolean ProviderStatus::isIdle()
{
    if (!_isInitialized ||
        (_currentOperations.get() > 0) ||
        _indicationsEnabled)
    {
        return false;
    }

    if (_cimomHandle)
    {
        return _cimomHandle->unload_ok();
    }

    return true;
}

void ProviderStatus::operationBegin()
{
    _currentOperations++;
}

void ProviderStatus::operationEnd()
{
    _currentOperations--;

    // Update the timer used to detect idle providers
    AutoMutex lock(_lastOperationEndTimeMutex);
    Time::gettimeofday(&_lastOperationEndTime);
}

Uint32 ProviderStatus::numCurrentOperations() const
{
    return _currentOperations.get();
}

Boolean ProviderStatus::getIndicationsEnabled() const
{
    return _indicationsEnabled;
}

void ProviderStatus::setIndicationsEnabled(Boolean indicationsEnabled)
{
    _indicationsEnabled = indicationsEnabled;
}

Boolean ProviderStatus::testIfZeroAndIncrementSubscriptions()
{
    AutoMutex lock(_currentSubscriptionsMutex);
    return (_currentSubscriptions++ == 0);
}

Boolean ProviderStatus::decrementSubscriptionsAndTestIfZero()
{
    AutoMutex lock(_currentSubscriptionsMutex);
    return (--_currentSubscriptions == 0);
}

Boolean ProviderStatus::testSubscriptions()
{
    AutoMutex lock(_currentSubscriptionsMutex);
    return (_currentSubscriptions > 0);
}

void ProviderStatus::resetSubscriptions()
{
    AutoMutex lock(_currentSubscriptionsMutex);
    _currentSubscriptions = 0;
}

void ProviderStatus::setProviderInstance(const CIMInstance& instance)
{
    _providerInstance = instance;
}

CIMInstance ProviderStatus::getProviderInstance()
{
    return _providerInstance;
}

Mutex& ProviderStatus::getStatusMutex()
{
    return _statusMutex;
}

PEGASUS_NAMESPACE_END