/* FasTC * Copyright (c) 2012 University of North Carolina at Chapel Hill. All rights reserved. * * Permission to use, copy, modify, and distribute this software and its documentation for educational, * research, and non-profit purposes, without fee, and without a written agreement is hereby granted, * provided that the above copyright notice, this paragraph, and the following four paragraphs appear * in all copies. * * Permission to incorporate this software into commercial products may be obtained by contacting the * authors or the Office of Technology Development at the University of North Carolina at Chapel Hill . * * This software program and documentation are copyrighted by the University of North Carolina at Chapel Hill. * The software program and documentation are supplied "as is," without any accompanying services from the * University of North Carolina at Chapel Hill or the authors. The University of North Carolina at Chapel Hill * and the authors do not warrant that the operation of the program will be uninterrupted or error-free. The * end-user understands that the program was developed for research purposes and is advised not to rely * exclusively on the program for any reason. * * IN NO EVENT SHALL THE UNIVERSITY OF NORTH CAROLINA AT CHAPEL HILL OR THE AUTHORS BE LIABLE TO ANY PARTY FOR * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES, INCLUDING LOST PROFITS, ARISING OUT OF THE * USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF THE UNIVERSITY OF NORTH CAROLINA AT CHAPEL HILL OR THE * AUTHORS HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. * * THE UNIVERSITY OF NORTH CAROLINA AT CHAPEL HILL AND THE AUTHORS SPECIFICALLY DISCLAIM ANY WARRANTIES, INCLUDING, * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE AND ANY * STATUTORY WARRANTY OF NON-INFRINGEMENT. THE SOFTWARE PROVIDED HEREUNDER IS ON AN "AS IS" BASIS, AND THE UNIVERSITY * OF NORTH CAROLINA AT CHAPEL HILL AND THE AUTHORS HAVE NO OBLIGATIONS TO PROVIDE MAINTENANCE, SUPPORT, UPDATES, * ENHANCEMENTS, OR MODIFICATIONS. * * Please send all BUG REPORTS to . * * The authors may be contacted via: * * Pavel Krajcevski * Dept of Computer Science * 201 S Columbia St * Frederick P. Brooks, Jr. Computer Science Bldg * Chapel Hill, NC 27599-3175 * USA * * */ // The original lisence from the code available at the following location: // http://software.intel.com/en-us/vcsource/samples/fast-texture-compression // // This code has been modified significantly from the original. //-------------------------------------------------------------------------------------- // Copyright 2011 Intel Corporation // All Rights Reserved // // Permission is granted to use, copy, distribute and prepare derivative works of this // software for any purpose and without fee, provided, that the above copyright notice // and this statement appear in all copies. Intel makes no representations about the // suitability of this software for any purpose. THIS SOFTWARE IS PROVIDED "AS IS." // INTEL SPECIFICALLY DISCLAIMS ALL WARRANTIES, EXPRESS OR IMPLIED, AND ALL LIABILITY, // INCLUDING CONSEQUENTIAL AND OTHER INDIRECT DAMAGES, FOR THE USE OF THIS SOFTWARE, // INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PROPRIETARY RIGHTS, AND INCLUDING THE // WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. Intel does not // assume any responsibility for any errors which may appear in this software nor any // responsibility to update it. // //-------------------------------------------------------------------------------------- #include "StopWatch.h" #include "TexCompTypes.h" #include #include class StopWatchImpl { public: uint64 frequency; uint64 start; uint64 stop; uintptr_t affinityMask; StopWatchImpl() : start(0), stop(0), affinityMask(0) { // Initialize the performance counter frequency. LARGE_INTEGER perfQuery; BOOL supported = QueryPerformanceFrequency(&perfQuery); assert(supported == TRUE); this->frequency = perfQuery.QuadPart; } }; StopWatch::StopWatch() : impl(new StopWatchImpl) { } StopWatch::StopWatch(const StopWatch &other) { impl = new StopWatchImpl(); memcpy(impl, other.impl, sizeof(StopWatchImpl)); } StopWatch &StopWatch::operator=(const StopWatch &other) { if(impl) { delete impl; } impl = new StopWatchImpl(); memcpy(impl, other.impl, sizeof(StopWatchImpl)); return *this; } StopWatch::~StopWatch() { delete impl; } // Start the stopwatch. void StopWatch::Start() { // MSDN recommends setting the thread affinity to avoid bugs in the BIOS and HAL. // Create an affinity mask for the current processor. impl->affinityMask = (DWORD_PTR)1 << GetCurrentProcessorNumber(); HANDLE currThread = GetCurrentThread(); DWORD_PTR prevAffinityMask = SetThreadAffinityMask(currThread, impl->affinityMask); assert(prevAffinityMask != 0); // Query the performance counter. LARGE_INTEGER perfQuery; BOOL result = QueryPerformanceCounter(&perfQuery); assert(result); impl->start = perfQuery.QuadPart; // Restore the thread's affinity mask. prevAffinityMask = SetThreadAffinityMask(currThread, prevAffinityMask); assert(prevAffinityMask != 0); } // Stop the stopwatch. void StopWatch::Stop() { // MSDN recommends setting the thread affinity to avoid bugs in the BIOS and HAL. // Use the affinity mask that was created in the Start function. HANDLE currThread = GetCurrentThread(); DWORD_PTR prevAffinityMask = SetThreadAffinityMask(currThread, impl->affinityMask); assert(prevAffinityMask != 0); // Query the performance counter. LARGE_INTEGER perfQuery; BOOL result = QueryPerformanceCounter(&perfQuery); assert(result); impl->stop = perfQuery.QuadPart; // Restore the thread's affinity mask. prevAffinityMask = SetThreadAffinityMask(currThread, prevAffinityMask); assert(prevAffinityMask != 0); } // Reset the stopwatch. void StopWatch::Reset() { impl->start = 0; impl->stop = 0; impl->affinityMask = 0; } // Get the elapsed time in seconds. double StopWatch::TimeInSeconds() const { // Return the elapsed time in seconds. assert((impl->stop - impl->start) > 0); return double(impl->stop - impl->start) / double(impl->frequency); } // Get the elapsed time in milliseconds. double StopWatch::TimeInMilliseconds() const { // Return the elapsed time in milliseconds. assert((impl->stop - impl->start) > 0); return double(impl->stop - impl->start) / double(impl->frequency) * 1000.0; } // Get the elapsed time in microseconds. double StopWatch::TimeInMicroseconds() const { // Return the elapsed time in microseconds. assert((impl->stop - impl->start) > 0); return double(impl->stop - impl->start) / double(impl->frequency) * 1000000.0; }