sharedpropertyblock.h

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#pragma once
// 
 
#include "propertyblock.h"
#include "shared/src/blockmemset.h"
 
namespace models {
 template <class T> class SharedPropertyBlock {
 public:
 SharedPropertyBlock() { }
 virtual ~SharedPropertyBlock() { }
 
 const T *claim(const T &t);
 void release(const T *t);
 
 private:
 BlockMemSet<T> properties_;
 };
 
 template <class T> const T *SharedPropertyBlock<T>::claim(const T &in) {
 auto i = properties_.insert(in);
 const T &t = *i.first;
 t.incrementReference();
 return &t;
 }
 
 template <class T> void SharedPropertyBlock<T>::release(const T *t) {
 assert(t);
 auto i = properties_.find(*t);
 assert(i!=properties_.end());
 const T &found = *i;
 assert(&found==t);
 if (!found.decrementReference())
 properties_.erase(i);
 }
} // namespace models
 
// EoF