87 lines
2.5 KiB
C++
87 lines
2.5 KiB
C++
#ifndef VIRTUAL_MEMORY_H
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#define VIRTUAL_MEMORY_H
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#if defined(XBOX)
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#include <xtl.h>
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#else
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#include <windows.h>
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#endif
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#include "RageThreads.h"
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struct vm_page;
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class VirtualMemoryManager
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{
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public:
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VirtualMemoryManager();
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~VirtualMemoryManager();
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bool Init();
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void Destroy();
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void* Allocate(size_t size);
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bool Free(void *ptr);
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bool PageFault(void *ptr);
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bool DecommitLRU();
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bool EnsureFreeMemory(size_t size);
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void Lock(void *ptr);
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void Unlock(void *ptr);
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void SetLogging(bool l) { logging = l; }
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bool IsValid() { return inited; }
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bool IsLogging() { return logging; }
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unsigned long GetThreshold() { return threshold; }
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protected:
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vm_page *pages;
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HANDLE vmemFile;
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DWORD baseAddress;
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unsigned long totalPages;
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unsigned long pageSize;
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unsigned long threshold;
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unsigned long pageLRU;
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bool inited;
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bool logging;
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// mutex to make sure pages aren't allocated/deallocated concurrently
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RageMutex vmemMutex;
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};
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void *valloc(size_t size);
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void vfree(void *ptr);
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//#define malloc(size) valloc(size)
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//#define free(memblock) vfree(memblock)
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extern VirtualMemoryManager vmem_Manager;
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LONG _stdcall CheckPageFault(LPEXCEPTION_POINTERS e);
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int NoMemory(size_t size);
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#endif
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/*
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* (c) 2004 Ryan Dortmans
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* All rights reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, and/or sell copies of the Software, and to permit persons to
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* whom the Software is furnished to do so, provided that the above
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* copyright notice(s) and this permission notice appear in all copies of
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* the Software and that both the above copyright notice(s) and this
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* permission notice appear in supporting documentation.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF
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* THIRD PARTY RIGHTS. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR HOLDERS
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* INCLUDED IN THIS NOTICE BE LIABLE FOR ANY CLAIM, OR ANY SPECIAL INDIRECT
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* OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS
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* OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
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* OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
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* PERFORMANCE OF THIS SOFTWARE.
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*/ |