mirror of
https://github.com/ptitSeb/Serious-Engine
synced 2024-11-25 03:40:26 +01:00
65 lines
2.1 KiB
C++
65 lines
2.1 KiB
C++
/* Copyright (c) 2002-2012 Croteam Ltd.
|
|
This program is free software; you can redistribute it and/or modify
|
|
it under the terms of version 2 of the GNU General Public License as published by
|
|
the Free Software Foundation
|
|
|
|
|
|
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, write to the Free Software Foundation, Inc.,
|
|
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. */
|
|
|
|
#ifndef SE_INCL_LINEARALLOCATOR_H
|
|
#define SE_INCL_LINEARALLOCATOR_H
|
|
#ifdef PRAGMA_ONCE
|
|
#pragma once
|
|
#endif
|
|
/*
|
|
* Template class for dynamic allocation of objects in a linear fashion.
|
|
*/
|
|
template<class Type>
|
|
class CLinearAllocator {
|
|
// implementation:
|
|
public:
|
|
CListHead la_lhBlocks; // list of allocated memory blocks
|
|
INDEX la_ctAllocationStep; // number of objects allocated
|
|
INDEX la_ctObjects; // number of objects allocated
|
|
INDEX la_ctFree; // number of free objects in current block
|
|
Type *la_ptNextFree; // pointer to next free object
|
|
|
|
// allocate a new memory block
|
|
void AllocBlock(INDEX iCount);
|
|
|
|
// interface:
|
|
public:
|
|
// default constructor
|
|
CLinearAllocator(void);
|
|
// copy constructor
|
|
CLinearAllocator(CLinearAllocator<Type> &laOriginal);
|
|
// destructor -- frees all memory
|
|
~CLinearAllocator(void);
|
|
// destroy all objects, and reset the allocator to initial (empty) state
|
|
void Clear(void);
|
|
|
|
/* Set how many elements to allocate when stack overflows. */
|
|
inline void SetAllocationStep(INDEX ctStep);
|
|
|
|
// allocate a new object
|
|
inline Type &New(void);
|
|
inline Type *New(INDEX ct);
|
|
// free all objects but keep allocated space and relinearize it
|
|
inline void Reset(void);
|
|
// these are just for compatibility with CDynamicStackArray<>:
|
|
inline Type &Push(void) { return New(); };
|
|
inline Type *Push(INDEX ct) { return New(ct); };
|
|
inline void PopAll(void) { Reset(); };
|
|
};
|
|
|
|
|
|
#endif /* include-once check. */
|
|
|