Class CryptFileMutex

libcppcryptfs/file/openfiles.h:40–69

using namespace std;

class CryptFileMutex {
private:
	// the outer mutex is for fairness so exclusive lockers can get in
	// because they need to do only a small portion of their work in exclusive mode
	mutex m_outer_mutex;  
	shared_mutex m_inner_mutex;
public:
	void lock() 
	{
		lock_guard<mutex> lck(m_outer_mutex);
		m_inner_mutex.lock();		
	}

	void lock_shared() 
	{		
		lock_guard<mutex> lck(m_outer_mutex);
		m_inner_mutex.lock_shared();
	}

	void unlock() 
	{
		m_inner_mutex.unlock();
	}

	void unlock_shared() 
	{
		m_inner_mutex.unlock_shared();
	}

};

class CryptOpenFile {
private: