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This commit is contained in:
Brian Fiete 2019-08-23 11:56:54 -07:00
parent c74712dad9
commit 078564ac9e
3242 changed files with 1616395 additions and 0 deletions
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46
BeefySysLib/util/MappedFile.cpp Normal file
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#include "MappedFile.h"
USING_NS_BF;
#ifdef BF_PLATFORM_WINDOWS
MappedFile::MappedFile()
{
mMappedFile = INVALID_HANDLE_VALUE;
mMappedFileMapping = INVALID_HANDLE_VALUE;
mData = NULL;
mFileSize = 0;
}
MappedFile::~MappedFile()
{
if (mData != NULL)
::UnmapViewOfFile(mData);
if (mMappedFileMapping != INVALID_HANDLE_VALUE)
::CloseHandle(mMappedFileMapping);
if (mMappedFile != INVALID_HANDLE_VALUE)
::CloseHandle(mMappedFile);
}
bool MappedFile::Open(const StringImpl& fileName)
{
mFileName = fileName;
mMappedFile = CreateFileA(fileName.c_str(), GENERIC_READ, FILE_SHARE_READ, NULL, OPEN_EXISTING, NULL, NULL);
if (mMappedFile == INVALID_HANDLE_VALUE)
{
return false;
}
DWORD highFileSize = 0;
mFileSize = (int)GetFileSize(mMappedFile, &highFileSize);
mMappedFileMapping = CreateFileMapping(mMappedFile, NULL, PAGE_READONLY, 0, mFileSize, NULL);
mData = MapViewOfFile(mMappedFileMapping, FILE_MAP_READ, 0, 0, mFileSize);
if (mData == NULL)
{
return false;
}
return true;
}
#endif