// ************************************************************************** // * This file is part of the FreeFileSync project. It is distributed under * // * GNU General Public License: http://www.gnu.org/licenses/gpl.html * // * Copyright (C) Zenju (zenju AT gmx DOT de) - All Rights Reserved * // ************************************************************************** #ifndef DEBUG_PERF_HEADER #define DEBUG_PERF_HEADER #include "deprecate.h" #include "tick_count.h" #ifdef FFS_WIN #include <sstream> #else #include <iostream> #endif //############# two macros for quick performance measurements ############### #define PERF_START zen::PerfTimer perfTest; #define PERF_STOP perfTest.showResult(); //########################################################################### namespace zen { class PerfTimer { public: class TimerError {}; ZEN_DEPRECATE PerfTimer() : ticksPerSec_(ticksPerSec()), startTime(), resultShown(false) { //std::clock() - "counts CPU time in C and wall time in VC++" - WTF!??? #ifdef FFS_WIN if (::SetThreadAffinityMask(::GetCurrentThread(), 1) == 0) throw TimerError(); //"should not be required unless there are bugs in BIOS or HAL" - msdn, QueryPerformanceCounter #endif startTime = getTicks(); if (ticksPerSec_ == 0 || !startTime.isValid()) throw TimerError(); } ~PerfTimer() { if (!resultShown) showResult(); } void showResult() { const TickVal now = getTicks(); if (!now.isValid()) throw TimerError(); const auto delta = static_cast<long>(1000.0 * dist(startTime, now) / ticksPerSec_); #ifdef FFS_WIN std::ostringstream ss; ss << delta << " ms"; ::MessageBoxA(nullptr, ss.str().c_str(), "Timer", 0); #else std::clog << "Perf: duration: " << delta << " ms\n"; #endif resultShown = true; startTime = getTicks(); //don't include call to MessageBox()! if (!startTime.isValid()) throw TimerError(); } private: const std::int64_t ticksPerSec_; TickVal startTime; bool resultShown; }; } #endif //DEBUG_PERF_HEADER