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 /*
 * 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 m_start_sec;
     unsigned long m_start_usec;
 #endif
 };
 
 #endif