51 lines
		
	
	
		
			1.4 KiB
		
	
	
	
		
			C
		
	
	
	
		
		
			
		
	
	
			51 lines
		
	
	
		
			1.4 KiB
		
	
	
	
		
			C
		
	
	
	
|  | /*
 | ||
|  | * Copyright (c) 2011 Erin Catto http://box2d.org
 | ||
|  | * | ||
|  | * This software is provided 'as-is', without any express or implied | ||
|  | * warranty.  In no event will the authors be held liable for any damages | ||
|  | * arising from the use of this software. | ||
|  | * Permission is granted to anyone to use this software for any purpose, | ||
|  | * including commercial applications, and to alter it and redistribute it | ||
|  | * freely, subject to the following restrictions: | ||
|  | * 1. The origin of this software must not be misrepresented; you must not | ||
|  | * claim that you wrote the original software. If you use this software | ||
|  | * in a product, an acknowledgment in the product documentation would be | ||
|  | * appreciated but is not required. | ||
|  | * 2. Altered source versions must be plainly marked as such, and must not be | ||
|  | * misrepresented as being the original software. | ||
|  | * 3. This notice may not be removed or altered from any source distribution. | ||
|  | */ | ||
|  | 
 | ||
|  | #ifndef B2_TIMER_H
 | ||
|  | #define B2_TIMER_H
 | ||
|  | 
 | ||
|  | #include "Box2D/Common/b2Settings.h"
 | ||
|  | 
 | ||
|  | /// Timer for profiling. This has platform specific code and may
 | ||
|  | /// not work on every platform.
 | ||
|  | class b2Timer | ||
|  | { | ||
|  | public: | ||
|  | 
 | ||
|  | 	/// Constructor
 | ||
|  | 	b2Timer(); | ||
|  | 
 | ||
|  | 	/// Reset the timer.
 | ||
|  | 	void Reset(); | ||
|  | 
 | ||
|  | 	/// Get the time since construction or the last reset.
 | ||
|  | 	float32 GetMilliseconds() const; | ||
|  | 
 | ||
|  | private: | ||
|  | 
 | ||
|  | #if defined(_WIN32)
 | ||
|  | 	float64 m_start; | ||
|  | 	static float64 s_invFrequency; | ||
|  | #elif defined(__linux__) || defined (__APPLE__)
 | ||
|  | 	unsigned long long m_start_sec; | ||
|  | 	unsigned long long m_start_usec; | ||
|  | #endif
 | ||
|  | }; | ||
|  | 
 | ||
|  | #endif
 |