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// mmap.h
/**
* Copyright (C) 2008 10gen Inc.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License, version 3,
* as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#pragma once
class MemoryMappedFile {
public:
static void closeAllFiles();
MemoryMappedFile();
~MemoryMappedFile(); /* closes the file if open */
void close();
/* only smart enough right now to deal with files of a fixed length.
creates if DNE
*/
void* map(const char *filename, int length);
void flush(bool sync);
void* viewOfs() { return view; }
private:
HANDLE fd;
HANDLE maphandle;
void *view;
int len;
};
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