mirror of
https://github.com/DrBeef/JKXR.git
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90 lines
1.8 KiB
C
90 lines
1.8 KiB
C
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/*
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===========================================================================
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Copyright (C) 2000 - 2013, Raven Software, Inc.
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Copyright (C) 2001 - 2013, Activision, Inc.
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Copyright (C) 2013 - 2015, OpenJK contributors
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This file is part of the OpenJK source code.
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OpenJK is free software; you can redistribute it and/or modify it
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under the terms of the GNU General Public License version 2 as
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published by the Free Software Foundation.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, see <http://www.gnu.org/licenses/>.
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===========================================================================
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*/
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#if !defined(MINIHEAP_H_INC)
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#define MINIHEAP_H_INC
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class CMiniHeap
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{
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char *mHeap;
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char *mCurrentHeap;
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int mSize;
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#if _DEBUG
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int mMaxAlloc;
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#endif
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public:
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// reset the heap back to the start
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void ResetHeap()
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{
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#if _DEBUG
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if ((intptr_t)mCurrentHeap - (intptr_t)mHeap>mMaxAlloc)
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{
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mMaxAlloc=(intptr_t)mCurrentHeap - (intptr_t)mHeap;
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}
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#endif
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mCurrentHeap = mHeap;
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}
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// initialise the heap
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CMiniHeap(int size)
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{
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mHeap = (char *)Z_Malloc(size, TAG_GHOUL2, qtrue);
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mSize = size;
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#if _DEBUG
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mMaxAlloc=0;
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#endif
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if (mHeap)
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{
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ResetHeap();
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}
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}
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// free up the heap
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~CMiniHeap()
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{
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if (mHeap)
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{
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// the quake heap will be long gone, no need to free it Z_Free(mHeap);
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}
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}
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// give me some space from the heap please
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char *MiniHeapAlloc(int size)
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{
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if (size < (mSize - ((intptr_t)mCurrentHeap - (intptr_t)mHeap)))
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{
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char *tempAddress = mCurrentHeap;
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mCurrentHeap += size;
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return tempAddress;
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}
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return NULL;
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}
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};
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extern CMiniHeap *G2VertSpaceServer;
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#endif //MINIHEAP_H_INC
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