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/**
* Orthanc - A Lightweight, RESTful DICOM Store
* Copyright (C) 2012-2014 Medical Physics Department, CHU of Liege,
* Belgium
*
* This program is free software: you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation, either version 3 of the
* License, or (at your option) any later version.
*
* In addition, as a special exception, the copyright holders of this
* program give permission to link the code of its release with the
* OpenSSL project's "OpenSSL" library (or with modified versions of it
* that use the same license as the "OpenSSL" library), and distribute
* the linked executables. You must obey the GNU General Public License
* in all respects for all of the code used other than "OpenSSL". If you
* modify file(s) with this exception, you may extend this exception to
* your version of the file(s), but you are not obligated to do so. If
* you do not wish to do so, delete this exception statement from your
* version. If you delete this exception statement from all source files
* in the program, then also delete it here.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
**/
#include "../PrecompiledHeaders.h"
#include "ArrayFilledByThreads.h"
#include "../MultiThreading/ThreadedCommandProcessor.h"
#include "../OrthancException.h"
namespace Orthanc
{
class ArrayFilledByThreads::Command : public ICommand
{
private:
ArrayFilledByThreads& that_;
size_t index_;
public:
Command(ArrayFilledByThreads& that,
size_t index) :
that_(that),
index_(index)
{
}
virtual bool Execute()
{
std::auto_ptr<IDynamicObject> obj(that_.filler_.GetFillerItem(index_));
if (obj.get() == NULL)
{
return false;
}
else
{
boost::mutex::scoped_lock lock(that_.mutex_);
that_.array_[index_] = obj.release();
return true;
}
}
};
void ArrayFilledByThreads::Clear()
{
for (size_t i = 0; i < array_.size(); i++)
{
if (array_[i])
delete array_[i];
}
array_.clear();
filled_ = false;
}
void ArrayFilledByThreads::Update()
{
if (!filled_)
{
array_.resize(filler_.GetFillerSize());
Orthanc::ThreadedCommandProcessor processor(threadCount_);
for (size_t i = 0; i < array_.size(); i++)
{
processor.Post(new Command(*this, i));
}
processor.Join();
filled_ = true;
}
}
ArrayFilledByThreads::ArrayFilledByThreads(IFiller& filler) : filler_(filler)
{
filled_ = false;
threadCount_ = 4;
}
ArrayFilledByThreads::~ArrayFilledByThreads()
{
Clear();
}
void ArrayFilledByThreads::Reload()
{
Clear();
Update();
}
void ArrayFilledByThreads::Invalidate()
{
Clear();
}
void ArrayFilledByThreads::SetThreadCount(unsigned int t)
{
if (t < 1)
{
throw OrthancException(ErrorCode_ParameterOutOfRange);
}
threadCount_ = t;
}
size_t ArrayFilledByThreads::GetSize()
{
Update();
return array_.size();
}
IDynamicObject& ArrayFilledByThreads::GetItem(size_t index)
{
if (index >= GetSize())
{
throw Orthanc::OrthancException(Orthanc::ErrorCode_ParameterOutOfRange);
}
return *array_[index];
}
}
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