cf5028d55b
* Added CUDA support * Performance improvements * API improvements * Added "depth" parameter to GEMM * Android cross-compilation
123 lines
2.5 KiB
C++
123 lines
2.5 KiB
C++
/* =========================================================================
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Copyright (c) 2010-2014, Institute for Microelectronics,
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Institute for Analysis and Scientific Computing,
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TU Wien.
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Portions of this software are copyright by UChicago Argonne, LLC.
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-----------------
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ViennaCL - The Vienna Computing Library
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-----------------
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Project Head: Karl Rupp rupp@iue.tuwien.ac.at
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(A list of authors and contributors can be found in the PDF manual)
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License: MIT (X11), see file LICENSE in the base directory
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============================================================================= */
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#ifndef _ISAAC_TOOLS_TIMER_HPP_
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#define _ISAAC_TOOLS_TIMER_HPP_
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/** @file isaac/tools/timer.hpp
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@brief A simple, yet (mostly) sufficiently accurate timer for benchmarking and profiling. */
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#include <iostream>
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#ifdef _WIN32
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#define WINDOWS_LEAN_AND_MEAN
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#include <windows.h>
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#undef min
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#undef max
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namespace isaac
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{
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namespace tools
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{
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/** @brief Simple timer class based on gettimeofday (POSIX) or QueryPerformanceCounter (Windows).
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*
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* Avoids messing with Boost and should be sufficient for benchmarking purposes.
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*/
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class timer
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{
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public:
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timer()
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{
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QueryPerformanceFrequency(&freq);
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}
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void start()
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{
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QueryPerformanceCounter((LARGE_INTEGER*) &start_time);
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}
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double get() const
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{
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LARGE_INTEGER elapsed;
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QueryPerformanceCounter((LARGE_INTEGER*) &end_time);
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elapsed.QuadPart = end_time.QuadPart - start_time.QuadPart;
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return elapsed.QuadPart / static_cast<double>(freq.QuadPart);
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}
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private:
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LARGE_INTEGER freq;
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LARGE_INTEGER start_time;
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LARGE_INTEGER end_time;
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};
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}
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}
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#else
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#include <sys/time.h>
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namespace isaac
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{
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namespace tools
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{
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/** @brief Simple timer class based on gettimeofday (POSIX) or QueryPerformanceCounter (Windows).
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*
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* Avoids messing with Boost and should be sufficient for benchmarking purposes.
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*/
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class timer
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{
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public:
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timer() : ts(0)
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{}
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void start()
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{
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struct timeval tval;
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gettimeofday(&tval, NULL);
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ts = static_cast<double>(tval.tv_sec * 1000000 + tval.tv_usec);
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}
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double get() const
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{
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struct timeval tval;
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gettimeofday(&tval, NULL);
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double end_time = static_cast<double>(tval.tv_sec * 1000000 + tval.tv_usec);
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return static_cast<double>(end_time-ts) / 1000000.0;
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}
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private:
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double ts;
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};
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}
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}
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#endif
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#endif
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