dolphin/Source/Core/Common/Profiler.cpp

Ignoring revisions in .git-blame-ignore-revs. Click here to bypass and see the normal blame view.

165 lines
4.1 KiB
C++
Raw Normal View History

2014-11-19 18:57:12 +00:00
// Copyright 2014 Dolphin Emulator Project
// SPDX-License-Identifier: GPL-2.0-or-later
2014-11-19 18:57:12 +00:00
2021-12-10 02:22:16 +00:00
#include "Common/Profiler.h"
#include <algorithm>
2014-11-19 18:57:12 +00:00
#include <cmath>
#include <cstdio>
#include <cstring>
#include <iomanip>
#include <ios>
#include <sstream>
#include "Common/Timer.h"
2015-08-20 09:41:49 +00:00
namespace Common
{
2014-12-04 03:54:54 +00:00
static const u32 PROFILER_FIELD_LENGTH = 8;
static const u32 PROFILER_FIELD_LENGTH_FP = PROFILER_FIELD_LENGTH + 3;
static const int PROFILER_LAZY_DELAY = 60; // in frames
2014-11-19 18:57:12 +00:00
std::list<Profiler*> Profiler::s_all_profilers;
2015-08-20 09:41:49 +00:00
std::mutex Profiler::s_mutex;
2014-11-19 18:57:12 +00:00
u32 Profiler::s_max_length = 0;
u64 Profiler::s_frame_time;
u64 Profiler::s_usecs_frame;
2019-03-02 18:42:25 +00:00
std::string Profiler::s_lazy_result;
2014-11-19 18:57:12 +00:00
int Profiler::s_lazy_delay = 0;
Profiler::Profiler(const std::string& name)
: m_name(name), m_usecs(0), m_usecs_min(UINT64_MAX), m_usecs_max(0), m_usecs_quad(0),
m_calls(0), m_depth(0)
2014-11-19 18:57:12 +00:00
{
m_time = Common::Timer::NowUs();
2014-11-19 18:57:12 +00:00
s_max_length = std::max<u32>(s_max_length, u32(m_name.length()));
2015-08-20 09:41:49 +00:00
std::lock_guard<std::mutex> lk(s_mutex);
2014-11-19 18:57:12 +00:00
s_all_profilers.push_back(this);
}
Profiler::~Profiler()
{
2015-08-20 09:41:49 +00:00
std::lock_guard<std::mutex> lk(s_mutex);
2014-11-19 18:57:12 +00:00
s_all_profilers.remove(this);
}
2015-08-20 09:41:49 +00:00
bool Profiler::operator<(const Profiler& b) const
{
return m_usecs < b.m_usecs;
}
2014-11-19 18:57:12 +00:00
std::string Profiler::ToString()
{
if (s_lazy_delay > 0)
{
s_lazy_delay--;
return s_lazy_result;
}
s_lazy_delay = PROFILER_LAZY_DELAY - 1;
2014-11-19 18:57:12 +00:00
// don't write anything if no profilation is enabled
2015-08-20 09:41:49 +00:00
std::lock_guard<std::mutex> lk(s_mutex);
2014-11-19 18:57:12 +00:00
if (s_all_profilers.empty())
return "";
u64 end = Common::Timer::NowUs();
2014-11-19 18:57:12 +00:00
s_usecs_frame = end - s_frame_time;
s_frame_time = end;
2014-11-19 18:57:12 +00:00
std::ostringstream buffer;
buffer << std::setw(s_max_length) << std::left << ""
<< " ";
buffer << std::setw(PROFILER_FIELD_LENGTH) << std::right << "calls"
<< " ";
buffer << std::setw(PROFILER_FIELD_LENGTH) << std::right << "sum"
<< " ";
buffer << std::setw(PROFILER_FIELD_LENGTH_FP) << std::right << "rel"
<< " ";
buffer << std::setw(PROFILER_FIELD_LENGTH) << std::right << "min"
<< " ";
buffer << std::setw(PROFILER_FIELD_LENGTH_FP) << std::right << "avg"
<< " ";
buffer << std::setw(PROFILER_FIELD_LENGTH_FP) << std::right << "stdev"
<< " ";
buffer << std::setw(PROFILER_FIELD_LENGTH) << std::right << "max"
<< " ";
2014-11-19 18:57:12 +00:00
buffer << "/ usec" << std::endl;
2015-08-20 09:41:49 +00:00
s_all_profilers.sort([](Profiler* a, Profiler* b) { return *b < *a; });
2014-11-19 18:57:12 +00:00
for (auto profiler : s_all_profilers)
{
buffer << profiler->Read() << std::endl;
}
s_lazy_result = buffer.str();
return s_lazy_result;
}
void Profiler::Start()
{
if (!m_depth++)
{
m_time = Common::Timer::NowUs();
2014-11-19 18:57:12 +00:00
}
}
void Profiler::Stop()
{
if (!--m_depth)
{
u64 end = Common::Timer::NowUs();
2014-11-19 18:57:12 +00:00
u64 diff = end - m_time;
2014-11-19 18:57:12 +00:00
m_usecs += diff;
m_usecs_min = std::min(m_usecs_min, diff);
m_usecs_max = std::max(m_usecs_max, diff);
m_usecs_quad += diff * diff;
m_calls++;
}
}
std::string Profiler::Read()
{
double avg = 0;
double stdev = 0;
double time_rel = 0;
if (m_calls)
{
avg = double(m_usecs) / m_calls;
stdev = std::sqrt(double(m_usecs_quad) / m_calls - avg * avg);
}
else
{
m_usecs_min = 0;
}
if (s_usecs_frame)
{
time_rel = double(m_usecs) * 100 / s_usecs_frame;
}
2014-11-19 18:57:12 +00:00
std::ostringstream buffer;
2014-11-19 18:57:12 +00:00
buffer << std::setw(s_max_length) << std::left << m_name << " ";
buffer << std::setw(PROFILER_FIELD_LENGTH) << std::right << m_calls << " ";
buffer << std::setw(PROFILER_FIELD_LENGTH) << std::right << m_usecs << " ";
buffer << std::setw(PROFILER_FIELD_LENGTH_FP) << std::right << time_rel << " ";
buffer << std::setw(PROFILER_FIELD_LENGTH) << std::right << m_usecs_min << " ";
buffer << std::setw(PROFILER_FIELD_LENGTH_FP) << std::right << std::fixed << std::setprecision(2)
<< avg << " ";
buffer << std::setw(PROFILER_FIELD_LENGTH_FP) << std::right << std::fixed << std::setprecision(2)
<< stdev << " ";
buffer << std::setw(PROFILER_FIELD_LENGTH) << std::right << m_usecs_max;
2014-11-19 18:57:12 +00:00
m_usecs = 0;
m_usecs_min = UINT64_MAX;
2014-11-19 18:57:12 +00:00
m_usecs_max = 0;
m_usecs_quad = 0;
m_calls = 0;
2014-11-19 18:57:12 +00:00
return buffer.str();
}
} // namespace Common