LockedPointer.h

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// This file's extension implies that it's C, but it's really -*- C++ -*-.
/*
 * Copyright (C) 2002-2021 CERN for the benefit of the ATLAS collaboration.
 */
#ifndef CXXUTILS_LOCKEDPOINTER_H
#define CXXUTILS_LOCKEDPOINTER_H
 
 
#include <mutex>
 
 
namespace CxxUtils {
 
 
template <class T, class MUTEX=std::recursive_mutex>
class LockedPointer
{
public:
  LockedPointer (T& p, std::unique_lock<MUTEX>&& lock)
    : m_lock (std::move (lock)),
      m_p (p)
  {
  }
 
  T* get() { return &m_p; }
  T* operator->() { return &m_p; }
  T& operator*() { return m_p; }
 
private:
  std::unique_lock<MUTEX> m_lock;
  T& m_p;
};
 
} // namespace CxxUtils
 
 
#endif // not CXXUTILS_LOCKEDPOINTER_H