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//# ObjectStack.cc: A stack of re-usable objects
//# Copyright (C) 2007
//# Associated Universities, Inc. Washington DC, USA.
//#
//# This library is free software; you can redistribute it and/or modify it
//# under the terms of the GNU Library General Public License as published by
//# the Free Software Foundation; either version 2 of the License, or (at your
//# option) any later version.
//#
//# This library 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 Library General Public
//# License for more details.
//#
//# You should have received a copy of the GNU Library General Public License
//# along with this library; if not, write to the Free Software Foundation,
//# Inc., 675 Massachusetts Ave, Cambridge, MA 02139, USA.
//#
//# Correspondence concerning AIPS++ should be addressed as follows:
//# Internet email: casa-feedback@nrao.edu.
//# Postal address: AIPS++ Project Office
//# National Radio Astronomy Observatory
//# 520 Edgemont Road
//# Charlottesville, VA 22903-2475 USA
#ifndef CASA_OBJECTSTACK_TCC
#define CASA_OBJECTSTACK_TCC
//# Includes
#include <casacore/casa/Containers/ObjectStack.h>
namespace casacore { //# NAMESPACE CASACORE - BEGIN
template <class T>
ObjectStack<T> &ObjectStack<T>::stack() {
static ObjectStack<T> theStack;
return theStack;
}
//# Destructor
template <class T>
ObjectStack<T>::~ObjectStack() {
for (uInt i=0; i<stack_p.size(); ++i) {
delete stack_p[i];
stack_p[i]=0;
}
}
//# Member functions
template <class T>
T *ObjectStack<T>::get() {
std::lock_guard<std::mutex> lock(mutex_p);
if (stack_p.empty()) stack_p.push_back(new T);
T* object = stack_p.back();
stack_p.pop_back();
return object;
}
template <class T>
void ObjectStack<T>::clear() {
std::lock_guard<std::mutex> lock(mutex_p);
std::vector<T*>(stack_p).swap(stack_p);
}
} //# NAMESPACE CASACORE - END
#endif
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