mirror of
https://github.com/alliedmodders/hl2sdk.git
synced 2025-01-10 10:59:39 +08:00
c0def21c93
Changed/Added classes: CThreadMutex, CUtlMemoryBlockAllocator, CRawAllocator, CUtlHashtable, CUtlVector, CUtlMemory, CUtlMemory_RawAllocator, CUtlSymbolLarge, CUtlSymbolTableLargeBase
75 lines
2.0 KiB
C++
75 lines
2.0 KiB
C++
//===== Copyright 1996-2005, Valve Corporation, All rights reserved. ======//
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//
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// Purpose:
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//
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// $Workfile: $
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// $Date: $
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//
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//-----------------------------------------------------------------------------
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// $Log: $
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//
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// $NoKeywords: $
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//===========================================================================//
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#ifndef MEMBLOCKALLOCATOR_H
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#define MEMBLOCKALLOCATOR_H
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#ifdef _WIN32
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#pragma once
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#endif
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#include "tier1/utlvector.h"
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typedef unsigned int MemBlockHandle_t;
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#define MEMBLOCKHANDLE_INVALID ((MemBlockHandle_t)~0)
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class CUtlMemoryBlockAllocator
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{
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public:
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DLL_CLASS_IMPORT CUtlMemoryBlockAllocator( int nInitPages, unsigned int nPageSize, RawAllocatorType_t eAllocatorType );
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DLL_CLASS_IMPORT ~CUtlMemoryBlockAllocator( void );
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DLL_CLASS_IMPORT void RemoveAll( size_t nSize = 0 );
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DLL_CLASS_IMPORT void Purge( void );
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DLL_CLASS_IMPORT MemBlockHandle_t Alloc( unsigned int nSize );
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DLL_CLASS_IMPORT MemBlockHandle_t AllocAndCopy( const char* pBuf, unsigned int nSize );
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DLL_CLASS_IMPORT uint64 MemUsage( void );
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DLL_CLASS_IMPORT void SetPageSize( unsigned int nPageSize );
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DLL_CLASS_IMPORT MemBlockHandle_t FindPageWithSpace( unsigned int nSpace );
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void* GetBlock( MemBlockHandle_t handle ) const;
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private:
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struct MemPage_t
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{
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unsigned int m_nTotalSize;
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unsigned int m_nUsedSize;
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byte* m_pMemory;
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};
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typedef CUtlVector<MemPage_t, CUtlMemory_RawAllocator<MemPage_t>> MemPagesVec_t;
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unsigned int m_nMaxPagesExp;
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unsigned int m_nPageIndexMask;
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unsigned int m_nPageIndexShift;
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unsigned int m_nBlockOffsetMask;
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MemPagesVec_t m_MemPages;
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unsigned int m_nPageSize;
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RawAllocatorType_t m_eRawAllocatorType;
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};
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inline void* CUtlMemoryBlockAllocator::GetBlock( MemBlockHandle_t handle ) const
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{
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int nPageIndex = handle >> m_nPageIndexShift;
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int nBlockOffset = handle & m_nBlockOffsetMask;
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if ( nPageIndex >= 0 && nPageIndex < m_MemPages.Count() )
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return (void*)&m_MemPages[ nPageIndex ].m_pMemory[ nBlockOffset ];
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return NULL;
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}
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#endif // MEMBLOCKALLOCATOR_H
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