1/*
2* Copyright (c) 2011 Erin Catto http://box2d.org
3*
4* This software is provided 'as-is', without any express or implied
5* warranty. In no event will the authors be held liable for any damages
6* arising from the use of this software.
7* Permission is granted to anyone to use this software for any purpose,
8* including commercial applications, and to alter it and redistribute it
9* freely, subject to the following restrictions:
10* 1. The origin of this software must not be misrepresented; you must not
11* claim that you wrote the original software. If you use this software
12* in a product, an acknowledgment in the product documentation would be
13* appreciated but is not required.
14* 2. Altered source versions must be plainly marked as such, and must not be
15* misrepresented as being the original software.
16* 3. This notice may not be removed or altered from any source distribution.
17*/
18
19#ifndef B2_TIMER_H
20#define B2_TIMER_H
21
22#include <Box2D/Common/b2Settings.h>
23
24/// Timer for profiling. This has platform specific code and may
25/// not work on every platform.
26class b2Timer
27{
28public:
29
30 /// Constructor
31 b2Timer();
32
33 /// Reset the timer.
34 void Reset();
35
36 /// Get the time since construction or the last reset.
37 float32 GetMilliseconds() const;
38
39private:
40
41#if defined(_WIN32)
42 float64 m_start;
43 static float64 s_invFrequency;
44#elif defined(__linux__) || defined (__APPLE__)
45 unsigned long m_start_sec;
46 unsigned long m_start_usec;
47#endif
48};
49
50#endif
51