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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 <sys/types.h>
#include <fcntl.h>
#include <limits.h>
namespace ns_log {
class Lock {
private:
Lock();
Lock(const Lock &);
Lock& operator =(const Lock &);
int _fd;
bool _isLocked;
public:
int fd() const { return _fd; }
int size();
explicit Lock(const char *filename, int mode = O_RDONLY | O_NOCTTY);
explicit Lock(int fd);
~Lock();
void lock(bool isExclusive);
void unlock();
};
} // end namespace ns_log
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