WIP of assimp integration.

Engine/lib/assimp/contrib/Open3DGC/o3dgcTimer.h

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+/*
+Copyright (c) 2013 Khaled Mammou - Advanced Micro Devices, Inc.
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.
+*/
+
+#pragma once
+#ifndef O3DGC_TIMER_H
+#define O3DGC_TIMER_H
+
+#include "o3dgcCommon.h"
+
+#ifdef _WIN32
+/* Thank you, Microsoft, for file WinDef.h with min/max redefinition. */
+#define NOMINMAX
+#include <windows.h>
+#elif __APPLE__
+#include <mach/clock.h>
+#include <mach/mach.h>
+#else
+#include <time.h>
+#include <sys/time.h>
+#endif
+
+
+
+namespace o3dgc
+{
+#ifdef _WIN32
+    class Timer
+    {
+    public: 
+        Timer(void)
+        {
+            m_start.QuadPart = 0;
+            m_stop.QuadPart  = 0;
+            QueryPerformanceFrequency( &m_freq ) ;
+        };
+        ~Timer(void){};
+        void Tic() 
+        {
+            QueryPerformanceCounter(&m_start) ;
+        }
+        void Toc() 
+        {
+            QueryPerformanceCounter(&m_stop);
+        }
+        double GetElapsedTime() // in ms
+        {
+            LARGE_INTEGER delta;
+            delta.QuadPart = m_stop.QuadPart - m_start.QuadPart;
+            return (1000.0 * delta.QuadPart) / (double)m_freq.QuadPart;
+        }
+    private:
+        LARGE_INTEGER m_start;
+        LARGE_INTEGER m_stop;
+        LARGE_INTEGER m_freq;
+
+    };
+#elif __APPLE__
+    class Timer
+    {
+    public: 
+        Timer(void)
+        {
+            memset(this, 0, sizeof(Timer));
+            host_get_clock_service(mach_host_self(), CALENDAR_CLOCK, & m_cclock);
+        };
+        ~Timer(void)
+        {
+            mach_port_deallocate(mach_task_self(),  m_cclock);
+        };
+        void Tic() 
+        {
+            clock_get_time( m_cclock, &m_start);
+        }
+        void Toc() 
+        {
+            clock_get_time( m_cclock, &m_stop);
+        }
+        double GetElapsedTime() // in ms
+        {
+            return 1000.0 * (m_stop.tv_sec - m_start.tv_sec + (1.0E-9) * (m_stop.tv_nsec - m_start.tv_nsec));
+        }
+    private:
+        clock_serv_t    m_cclock;
+        mach_timespec_t m_start;
+        mach_timespec_t m_stop;
+    };
+#else
+    class Timer
+    {
+    public: 
+        Timer(void)
+        {
+            memset(this, 0, sizeof(Timer));
+        };
+        ~Timer(void){};
+        void Tic() 
+        {
+            clock_gettime(CLOCK_REALTIME, &m_start);
+        }
+        void Toc() 
+        {
+            clock_gettime(CLOCK_REALTIME, &m_stop);
+        }
+        double GetElapsedTime() // in ms
+        {
+            return 1000.0 * (m_stop.tv_sec - m_start.tv_sec + (1.0E-9) * (m_stop.tv_nsec - m_start.tv_nsec));
+        }
+    private:
+         struct timespec m_start;
+         struct timespec m_stop;
+    };
+#endif
+
+}
+#endif // O3DGC_TIMER_H