class CriticalSection
{
#ifdef __WIN32__
	CRITICAL_SECTION s;
#else
     // Most likely fast mutex is enough, but as long as performance problems 
are not reported,
     // let's play safetly
     pthread_mutex_t m = PTHREAD_RECURSIVE_MUTEX_INITIALIZER_NP;
#endif
public:
	CriticalSection(unsigned SpinCount = 0)
	{
#ifdef __WIN32__
         InitializeCriticalSectionAndSpinCount(&s, SpinCount);
#else
         (void)SpinCount;
         // pthread_mutex_init(); Not needed as mutex is initialized statically
#endif // __WIN32__
     }
	CriticalSection(const CriticalSection&) = delete;   // Cannot be copied
	CriticalSection(const CriticalSection&&) = delete;  // Cannot be moved

	~CriticalSection()
     {
#ifdef __WIN32__
         DeleteCriticalSection(&s);
#else
         pthread_mutex_destroy(&m); // Most likely no-op
#endif // __WIN32__
     }

	void enter()
     {
#ifdef __WIN32__
         EnterCriticalSection(&s);
#else
         assert_perror(pthread_mutex_lock(&m));
#endif // __WIN32__
     }

	void leave()
	{
#ifdef __WIN32__
         LeaveCriticalSection(&s);
#else
         assert_perror(pthread_mutex_unlock(&m));
#endif // __WIN32__
     }
};