46 lines
1.2 KiB
C++
46 lines
1.2 KiB
C++
//========== Copyright (C) Valve Corporation, All rights reserved. ==========//
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//
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// Purpose: CVirtualMemoryManager interface
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//
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//===========================================================================//
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#ifndef MEM_VIRT_H
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#define MEM_VIRT_H
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#ifdef _WIN32
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#pragma once
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#endif
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#define VMM_KB ( 1024 )
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#define VMM_MB ( 1024 * VMM_KB )
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#ifdef _PS3
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// Total virtual address space reserved by CVirtualMemoryManager on startup:
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#define VMM_VIRTUAL_SIZE ( 512 * VMM_MB )
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#define VMM_PAGE_SIZE ( 64 * VMM_KB )
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#endif
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// Allocate virtual sections via IMemAlloc::AllocateVirtualMemorySection
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abstract_class IVirtualMemorySection
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{
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public:
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// Information about memory section
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virtual void * GetBaseAddress() = 0;
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virtual size_t GetPageSize() = 0;
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virtual size_t GetTotalSize() = 0;
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// Functions to manage physical memory mapped to virtual memory
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virtual bool CommitPages( void *pvBase, size_t numBytes ) = 0;
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virtual void DecommitPages( void *pvBase, size_t numBytes ) = 0;
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// Release the physical memory and associated virtual address space
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virtual void Release() = 0;
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};
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// Get the IVirtualMemorySection associated with a given memory address (if any):
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extern IVirtualMemorySection *GetMemorySectionForAddress( void *pAddress );
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#endif // MEM_VIRT_H
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