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// Copyright Yahoo. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
#pragma once
#include <vespa/vespalib/data/input.h>
namespace vespalib {
/**
* Abstract input backed by a memory-mapped file.
**/
class MappedFileInput : public Input
{
private:
int _fd;
char *_data;
size_t _size;
size_t _used;
public:
MappedFileInput(const vespalib::string &file_name);
~MappedFileInput();
bool valid() const;
Memory get() const { return Memory(_data, _size); }
Memory obtain() override;
Input &evict(size_t bytes) override;
};
} // namespace vespalib
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