Differential D1917 Diff 9304 ps/trunk/source/lib/timer.cpp

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ps/trunk/source/lib/timer.cpp

/* Copyright (C) 2010 Wildfire Games.		/* Copyright (C) 2019 Wildfire Games.
*		*
* Permission is hereby granted, free of charge, to any person obtaining		* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files (the		* a copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including		* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,		* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sublicense, and/or sell copies of the Software, and to		* distribute, sublicense, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to		* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:		* the following conditions:
▲ Show 20 Lines • Show All 67 Lines • ▼ Show 20 Lines	#if OS_WIN
// whrt_Time starts at zero, nothing needs to be done.		// whrt_Time starts at zero, nothing needs to be done.
#elif HAVE_CLOCK_GETTIME		#elif HAVE_CLOCK_GETTIME
(void)clock_gettime(CLOCK_REALTIME, &start);		(void)clock_gettime(CLOCK_REALTIME, &start);
#elif HAVE_GETTIMEOFDAY		#elif HAVE_GETTIMEOFDAY
gettimeofday(&start, 0);		gettimeofday(&start, 0);
#endif		#endif
}		}

static pthread_mutex_t ensure_monotonic_mutex = PTHREAD_MUTEX_INITIALIZER;		static std::mutex ensure_monotonic_mutex;
// NB: does not guarantee strict monotonicity - callers must avoid		// NB: does not guarantee strict monotonicity - callers must avoid
// dividing by the difference of two equal times.		// dividing by the difference of two equal times.
static void EnsureMonotonic(double& newTime)		static void EnsureMonotonic(double& newTime)
{		{
pthread_mutex_lock(&ensure_monotonic_mutex);		std::lock_guard<std::mutex> lock(ensure_monotonic_mutex);
static double maxTime;		static double maxTime;
maxTime = std::max(maxTime, newTime);		maxTime = std::max(maxTime, newTime);
newTime = maxTime;		newTime = maxTime;
pthread_mutex_unlock(&ensure_monotonic_mutex);
}		}


double timer_Time()		double timer_Time()
{		{
double t;		double t;

#if OS_WIN		#if OS_WIN
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