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stackctor.h
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stackctor.h
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/* StackHeap
* Dynamic-esque memory allocation, on the stack.
* Allows "allocating" memory of size unknown at compile time.
* Strategy: Pre-allocate a big array on the stack, and treat it as if it's the heap.
*
* License: MIT
* Copyright (c) 2018 Ivan Rubinson
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#ifndef STACKCTOR_H_INCLUDED
#define STACKCTOR_H_INCLUDED
#include "stackheap.h"
#include <new>
#ifndef STACKCTOR_HEAPSIZE
#pragma message("stackctor.h included, STACKCTOR_HEAPSIZE undefined. Using default: 512")
#define STACKCTOR_HEAPSIZE 512
#endif
#ifdef STACKCTOR_DEFINEHEAP
#pragma message("stackctor.h included, STACKCTOR_DEFINEHEAP undefined. Assuming StackHeap has been defined for the size STACKCTOR_HEAPSIZE elsewhere")
char StackHeap<STACKCTOR_HEAPSIZE>::memory[STACKCTOR_HEAPSIZE];
char StackHeap<STACKCTOR_HEAPSIZE>::block_directory[STACKCTOR_HEAPSIZE];
char StackHeap<STACKCTOR_HEAPSIZE>::unused_block_id;
#endif
template<class T, class ... Params>
T* static_new(Params... params)
{
StackHeap<STACKCTOR_HEAPSIZE>::init();
T* object = (T*)StackHeap<STACKCTOR_HEAPSIZE>::malloc(sizeof(T));
if (object != nullptr)
{
new(object) T(params...); // call constructor via <new> library
}
return object;
}
template<class T>
void static_delete(T* object)
{
if(object != nullptr)
{
object->~T(); // call destructor
StackHeap<STACKCTOR_HEAPSIZE>::free(object);
}
}
#undef STACKCTOR_HEAPSIZE
#undef STACKCTOR_DEFINEHEAP
#endif