Cyd
2b8ca921cb
Complete disaster-recovery snapshot: engine/game source, game data assets, VC6 toolchain + DX SDKs, build outputs, deployed game, and _UNUSED archive. Large binaries in Git LFS; text preserved byte-for-byte (core.autocrlf=false, no eol attributes). See RECOVERY.md for the one-clone rebuild procedure.
106 lines
2.6 KiB
C++
106 lines
2.6 KiB
C++
// This is a part of the Microsoft Foundation Classes C++ library.
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// Copyright (C) 1992-1998 Microsoft Corporation
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// All rights reserved.
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//
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// This source code is only intended as a supplement to the
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// Microsoft Foundation Classes Reference and related
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// electronic documentation provided with the library.
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// See these sources for detailed information regarding the
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// Microsoft Foundation Classes product.
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#include "stdafx.h"
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#ifdef AFX_CORE4_SEG
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#pragma code_seg(AFX_CORE4_SEG)
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#endif
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#ifdef _DEBUG
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#undef THIS_FILE
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static char THIS_FILE[] = __FILE__;
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#endif
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#define new DEBUG_NEW
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////////////////////////////////////////////////////////////////////////////
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// CSharedFile implementation
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CSharedFile::CSharedFile(UINT nAllocFlags, UINT nGrowBytes)
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: CMemFile(nGrowBytes)
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{
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m_nAllocFlags = nAllocFlags;
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m_hGlobalMemory = NULL;
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m_bAllowGrow = TRUE;
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}
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CSharedFile::~CSharedFile()
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{
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if (m_lpBuffer)
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Close(); // call appropriate Close/Free
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ASSERT(m_lpBuffer == NULL);
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}
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void CSharedFile::SetHandle(HGLOBAL hGlobalMemory, BOOL bAllowGrow)
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{
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ASSERT(m_hGlobalMemory == NULL); // do once only
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ASSERT(m_lpBuffer == NULL); // do once only
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ASSERT(m_nPosition == 0);
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m_hGlobalMemory = hGlobalMemory;
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m_lpBuffer = (BYTE*)::GlobalLock(m_hGlobalMemory);
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m_nBufferSize = m_nFileSize = ::GlobalSize(m_hGlobalMemory);
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m_bAllowGrow = bAllowGrow;
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}
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BYTE* CSharedFile::Alloc(DWORD nBytes)
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{
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ASSERT(m_hGlobalMemory == NULL); // do once only
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m_hGlobalMemory = ::GlobalAlloc(m_nAllocFlags, nBytes);
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if (m_hGlobalMemory == NULL)
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return NULL;
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return (BYTE*)::GlobalLock(m_hGlobalMemory);
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}
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BYTE* CSharedFile::Realloc(BYTE*, DWORD nBytes)
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{
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if (!m_bAllowGrow)
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return NULL;
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ASSERT(m_hGlobalMemory != NULL);
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::GlobalUnlock(m_hGlobalMemory);
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HGLOBAL hNew;
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hNew = ::GlobalReAlloc(m_hGlobalMemory, nBytes, m_nAllocFlags);
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if (hNew == NULL)
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return NULL;
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m_hGlobalMemory = hNew;
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return (BYTE*)::GlobalLock(m_hGlobalMemory);
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}
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void CSharedFile::Free(BYTE*)
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{
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ASSERT(m_hGlobalMemory != NULL);
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::GlobalUnlock(m_hGlobalMemory);
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::GlobalFree(m_hGlobalMemory);
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}
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HGLOBAL CSharedFile::Detach()
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{
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HGLOBAL hMem;
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ASSERT(m_hGlobalMemory != NULL);
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hMem = m_hGlobalMemory;
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m_hGlobalMemory = NULL; // detach from global handle
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// re-initialize the CMemFile parts too
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m_lpBuffer = NULL;
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m_nBufferSize = 0;
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return hMem;
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}
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#ifdef AFX_INIT_SEG
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#pragma code_seg(AFX_INIT_SEG)
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#endif
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IMPLEMENT_DYNAMIC(CSharedFile, CMemFile)
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////////////////////////////////////////////////////////////////////////////
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