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/*
Minetest
Copyright (C) 2015 celeron55, Perttu Ahola <celeron55@gmail.com>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation; either version 2.1 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License along
with this program; if not, write to the Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include "profiler.h"
#include "porting.h"
static Profiler main_profiler;
Profiler *g_profiler = &main_profiler;
ScopeProfiler::ScopeProfiler(
Profiler *profiler, const std::string &name, ScopeProfilerType type) :
m_profiler(profiler),
m_name(name), m_type(type)
{
m_name.append(" [ms]");
if (m_profiler)
m_timer = new TimeTaker(m_name, nullptr, PRECISION_MILLI);
}
ScopeProfiler::~ScopeProfiler()
{
if (!m_timer)
return;
float duration_ms = m_timer->stop(true);
float duration = duration_ms / 1000.0;
if (m_profiler) {
switch (m_type) {
case SPT_ADD:
m_profiler->add(m_name, duration);
break;
case SPT_AVG:
m_profiler->avg(m_name, duration);
break;
case SPT_GRAPH_ADD:
m_profiler->graphAdd(m_name, duration);
break;
}
}
delete m_timer;
}
Profiler::Profiler()
{
m_start_time = porting::getTimeMs();
}
void Profiler::add(const std::string &name, float value)
{
MutexAutoLock lock(m_mutex);
{
/* No average shall have been used; mark add used as -2 */
std::map<std::string, int>::iterator n = m_avgcounts.find(name);
if (n == m_avgcounts.end()) {
m_avgcounts[name] = -2;
} else {
if (n->second == -1)
n->second = -2;
assert(n->second == -2);
}
}
{
std::map<std::string, float>::iterator n = m_data.find(name);
if (n == m_data.end())
m_data[name] = value;
else
n->second += value;
}
}
void Profiler::avg(const std::string &name, float value)
{
MutexAutoLock lock(m_mutex);
int &count = m_avgcounts[name];
assert(count != -2);
count = MYMAX(count, 0) + 1;
m_data[name] += value;
}
void Profiler::clear()
{
MutexAutoLock lock(m_mutex);
for (auto &it : m_data) {
it.second = 0;
}
m_avgcounts.clear();
m_start_time = porting::getTimeMs();
}
float Profiler::getValue(const std::string &name) const
{
auto numerator = m_data.find(name);
if (numerator == m_data.end())
return 0.f;
auto denominator = m_avgcounts.find(name);
if (denominator != m_avgcounts.end()) {
if (denominator->second >= 1)
return numerator->second / denominator->second;
}
return numerator->second;
}
int Profiler::getAvgCount(const std::string &name) const
{
auto n = m_avgcounts.find(name);
if (n != m_avgcounts.end() && n->second >= 1)
return n->second;
return 1;
}
u64 Profiler::getElapsedMs() const
{
return porting::getTimeMs() - m_start_time;
}
int Profiler::print(std::ostream &o, u32 page, u32 pagecount)
{
GraphValues values;
getPage(values, page, pagecount);
char num_buf[50];
for (const auto &i : values) {
o << " " << i.first << " ";
if (i.second == 0) {
o << std::endl;
continue;
}
s32 space = 44 - i.first.size();
for (s32 j = 0; j < space; j++) {
if ((j & 1) && j < space - 1)
o << ".";
else
o << " ";
}
porting::mt_snprintf(num_buf, sizeof(num_buf), "% 4ix % 3g",
getAvgCount(i.first), i.second);
o << num_buf << std::endl;
}
return values.size();
}
void Profiler::getPage(GraphValues &o, u32 page, u32 pagecount)
{
MutexAutoLock lock(m_mutex);
u32 minindex, maxindex;
paging(m_data.size(), page, pagecount, minindex, maxindex);
for (const auto &i : m_data) {
if (maxindex == 0)
break;
maxindex--;
if (minindex != 0) {
minindex--;
continue;
}
o[i.first] = i.second / getAvgCount(i.first);
}
}
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