#ifndef MESSMER_CPPUTILS_LOCK_COMBINEDLOCK_H

#define MESSMER_CPPUTILS_LOCK_COMBINEDLOCK_H

#include "../macros.h"

namespace cpputils {

/**

* This class is used to combine multiple locks into one, taking care that they are locked/unlocked

* in the order they were given to the constructor.

*/

class CombinedLock final {

public:

CombinedLock(std::unique_lock<std::mutex> *outer, std::unique_lock<std::mutex> *inner)

: _outer(outer), _inner(inner) {

}

void lock() {

_outer->lock();

_inner->lock();

}

void unlock() {

_inner->unlock();

_outer->unlock();

}

private:

std::unique_lock<std::mutex> *_outer;

std::unique_lock<std::mutex> *_inner;

DISALLOW_COPY_AND_ASSIGN(CombinedLock);

};

}

#endif