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#ifndef _PFC_MEM_BLOCK_H_
#define _PFC_MEM_BLOCK_H_
class mem_block
{
private:
void * data;
int size;
public:
mem_block() {data=0;size=0;}
~mem_block() {if (data) free(data);}
int get_size() const {return size;}
void * get_ptr() const {return data;}
void * set_size(int new_size)
{
if (data==0) data = malloc(size = new_size);
else if (size!=new_size)
{
void * new_data = realloc(data,new_size);
if (!new_data) return 0;
data = new_data;
size = new_size;
}
return data;
}
void * check_size(int new_size)
{
if (size<new_size) return set_size(new_size);
else return data;
}
operator void * () const {return data;}
};
template<class T>
class mem_block_t : private mem_block
{
public:
int get_size() const {return mem_block::get_size()/sizeof(T);}
T* get_ptr() const {return static_cast<T*>(mem_block::get_ptr());}
T* set_size(int new_size) {return static_cast<T*>(mem_block::set_size(new_size*sizeof(T)));}
T* check_size(int new_size) {return static_cast<T*>(mem_block::check_size(new_size*sizeof(T)));}
operator T * () const {return get_ptr();}
};
#endif
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