forked from dolphin-emu/dolphin
139 lines
3.6 KiB
C++
139 lines
3.6 KiB
C++
// Copyright 2014 Dolphin Emulator Project
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// Licensed under GPLv2+
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// Refer to the license.txt file included.
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#include <cmath>
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#include <cstdio>
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#include <cstring>
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#include <iomanip>
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#include <ios>
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#include <sstream>
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#include "Common/Profiler.h"
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#include "Common/Timer.h"
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static const u32 PROFILER_FIELD_LENGTH = 8;
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static const u32 PROFILER_FIELD_LENGTH_FP = PROFILER_FIELD_LENGTH + 3;
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static const int PROFILER_LAZY_DELAY = 60; // in frames
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std::list<Profiler*> Profiler::s_all_profilers;
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u32 Profiler::s_max_length = 0;
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u64 Profiler::s_frame_time;
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u64 Profiler::s_usecs_frame;
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std::string Profiler::s_lazy_result = "";
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int Profiler::s_lazy_delay = 0;
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Profiler::Profiler(const std::string& name)
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: m_name(name), m_usecs(0), m_usecs_min(-1), m_usecs_max(0), m_usecs_quad(0), m_calls(0), m_depth(0)
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{
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m_time = Common::Timer::GetTimeUs();
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s_max_length = std::max<u32>(s_max_length, u32(m_name.length()));
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s_all_profilers.push_back(this);
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}
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Profiler::~Profiler()
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{
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s_all_profilers.remove(this);
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}
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std::string Profiler::ToString()
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{
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if (s_lazy_delay > 0)
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{
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s_lazy_delay--;
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return s_lazy_result;
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}
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s_lazy_delay = PROFILER_LAZY_DELAY - 1;
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// don't write anything if no profilation is enabled
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if (s_all_profilers.empty())
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return "";
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u64 end = Common::Timer::GetTimeUs();
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s_usecs_frame = end - s_frame_time;
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s_frame_time = end;
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std::ostringstream buffer;
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buffer << std::setw(s_max_length) << std::left << "" << " ";
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buffer << std::setw(PROFILER_FIELD_LENGTH) << std::right << "calls" << " ";
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buffer << std::setw(PROFILER_FIELD_LENGTH) << std::right << "sum" << " ";
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buffer << std::setw(PROFILER_FIELD_LENGTH_FP) << std::right << "rel" << " ";
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buffer << std::setw(PROFILER_FIELD_LENGTH) << std::right << "min" << " ";
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buffer << std::setw(PROFILER_FIELD_LENGTH_FP) << std::right << "avg" << " ";
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buffer << std::setw(PROFILER_FIELD_LENGTH_FP) << std::right << "stdev" << " ";
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buffer << std::setw(PROFILER_FIELD_LENGTH) << std::right << "max" << " ";
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buffer << "/ usec" << std::endl;
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for (auto profiler : s_all_profilers)
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{
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buffer << profiler->Read() << std::endl;
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}
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s_lazy_result = buffer.str();
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return s_lazy_result;
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}
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void Profiler::Start()
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{
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if (!m_depth++)
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{
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m_time = Common::Timer::GetTimeUs();
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}
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}
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void Profiler::Stop()
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{
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if (!--m_depth)
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{
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u64 end = Common::Timer::GetTimeUs();
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u64 diff = end - m_time;
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m_usecs += diff;
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m_usecs_min = std::min(m_usecs_min, diff);
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m_usecs_max = std::max(m_usecs_max, diff);
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m_usecs_quad += diff * diff;
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m_calls++;
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}
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}
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std::string Profiler::Read()
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{
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double avg = 0;
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double stdev = 0;
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double time_rel = 0;
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if(m_calls)
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{
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avg = double(m_usecs)/m_calls;
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stdev = std::sqrt(double(m_usecs_quad)/m_calls - avg*avg);
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}
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else
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{
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m_usecs_min = 0;
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}
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if(s_usecs_frame)
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{
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time_rel = double(m_usecs)*100/s_usecs_frame;
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}
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std::ostringstream buffer;
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buffer << std::setw(s_max_length) << std::left << m_name << " ";
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buffer << std::setw(PROFILER_FIELD_LENGTH) << std::right << m_calls << " ";
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buffer << std::setw(PROFILER_FIELD_LENGTH) << std::right << m_usecs << " ";
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buffer << std::setw(PROFILER_FIELD_LENGTH_FP) << std::right << time_rel << " ";
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buffer << std::setw(PROFILER_FIELD_LENGTH) << std::right << m_usecs_min << " ";
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buffer << std::setw(PROFILER_FIELD_LENGTH_FP) << std::right << std::fixed << std::setprecision(2) << avg << " ";
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buffer << std::setw(PROFILER_FIELD_LENGTH_FP) << std::right << std::fixed << std::setprecision(2) << stdev << " ";
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buffer << std::setw(PROFILER_FIELD_LENGTH) << std::right << m_usecs_max;
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m_usecs = 0;
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m_usecs_min = -1;
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m_usecs_max = 0;
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m_usecs_quad = 0;
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m_calls = 0;
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return buffer.str();
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}
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