A security neutral mutex class for the managed platform

#pragma once

class CMutexSecurityNuetralUnmanaged
{

private:
	const char* m_szMutexName;
	HANDLE m_hMutex;

public:
	CMutexSecurityNuetralUnmanaged(const char*  szMutexName):m_szMutexName(szMutexName)
	{
		m_hMutex = NULL;
	}

	~CMutexSecurityNuetralUnmanaged()
	{
	}

	 bool WaitOne()
	 {
		bool rtn = false;
		SECURITY_DESCRIPTOR sd;
		SECURITY_ATTRIBUTES sa;
		try{
			if (!InitializeSecurityDescriptor(&sd, SECURITY_DESCRIPTOR_REVISION)) return FALSE;			
			if (!SetSecurityDescriptorDacl(&sd, TRUE, NULL, FALSE))  return FALSE;

			sa.nLength = sizeof(sa);
			sa.lpSecurityDescriptor = &sd;
			sa.bInheritHandle = FALSE;
			m_hMutex = CreateMutex(&sa, true, m_szMutexName);
			WaitForSingleObject( m_hMutex, 10000L);
			
			rtn = true;
		}
		catch(...){
			rtn = false;
		}
		return rtn;
	 }

	 bool Done()
	 {
		 bool rtn = false;
		 try{
			ReleaseMutex(m_hMutex);
			CloseHandle(m_hMutex);
			rtn = true;
		}
		catch(...)
		{
			rtn = false;
		}
		return rtn;
	 }

};