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// mmap_mm.cpp - in memory (no file) version
/* Copyright 2009 10gen Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "pch.h"
#include "mmap.h"
/* in memory (no file) version */
namespace mongo {
MemoryMappedFile::MemoryMappedFile() {
fd = 0;
maphandle = 0;
view = 0;
len = 0;
}
void MemoryMappedFile::close() {
if ( view )
free( view );
view = 0;
len = 0;
}
void* MemoryMappedFile::map(const char *filename, long& length , int options ) {
verify( length );
view = malloc( length );
return view;
}
void MemoryMappedFile::flush(bool sync) {
}
void MemoryMappedFile::_lock() {}
void MemoryMappedFile::_unlock() {}
}
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