HeapFactory.h

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// Copyright CERN 2012 - Developed in collaboration with GSI

#ifndef HEAP_FACTORY_H_
#define HEAP_FACTORY_H_

#include <fesa-core/DataStore/DeviceFactoryImp.h>
#include <fesa-core/Exception/FesaException.h>

#include <cstring>

namespace fesa
{

template<typename GlobalDeviceType, typename DomainStoreType, typename DevInstType> class DeviceFactoryImp;

template<typename GlobalDeviceType, typename DomainStoreType, typename DevInstType>
class HeapFactory: public DeviceFactoryImp<GlobalDeviceType, DomainStoreType, DevInstType>
{
  public:
    HeapFactory(const std::string& className);

    bool setUpMemory();
};

//******************************************************************

//CRFESA-764 not all the methods have to be inline
template<typename GlobalDeviceType, typename DomainStoreType, typename DevInstType>
HeapFactory<GlobalDeviceType, DomainStoreType, DevInstType>::HeapFactory(const std::string& className) :
    DeviceFactoryImp<GlobalDeviceType, DomainStoreType, DevInstType> (className)
{
}

template<typename GlobalDeviceType, typename DomainStoreType, typename DevInstType>
bool HeapFactory<GlobalDeviceType, DomainStoreType, DevInstType>::setUpMemory()
{
    char* p;

    //Calculates needed memory for all fields and all devices
    this->computeMemorySize();
    try
    {
        //Reserves memory for all fields and all devices
        p = new char[this->size_];
    }
    catch (std::bad_alloc& ex)
    {
        throw FesaException(__FILE__, __LINE__, FesaErrorAllocatingMemory.c_str(), ex.what());
    }

    //This sets the whole memory-block to zeros
    std::memset(p, 0, this->size_);

    //maps all fields (and devices) to the reserved memory-block
    this->mapFields(p, true);
    return true;
}

} // fesa

#endif // HEAP_FACTORY_H_