Class CryptOpenFile

libcppcryptfs/file/openfiles.h:71–137

};

class CryptOpenFile {
private:
	CryptFileMutex m_mutex;
	unordered_map<HANDLE, DWORD> m_handles;
public:
	CryptOpenFile() = delete;
	virtual ~CryptOpenFile() = default;

	CryptOpenFile(HANDLE h)
	{		
		m_handles[h] = 1;		
	}

	void Open(HANDLE h)
	{
		auto it = m_handles.find(h);
		if (it == m_handles.end()) {
			m_handles[h] = 1;
		} else {
			it->second++;
		}
	}

	bool Close(HANDLE h)
	{
		auto it = m_handles.find(h);
		if (it == m_handles.end()) {
			return false;
		}

		it->second--;

		if (it->second == 0)
			m_handles.erase(h);

		return true;
	}

	bool Empty()
	{
		return m_handles.empty();
	}

	void LockShared()
	{
		m_mutex.lock_shared();
	}

	void UnlockShared()
	{
		m_mutex.unlock_shared();
	}

	void LockExclusive()
	{
		m_mutex.lock();
	}