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/*
* This file is part of OpenTTD.
* OpenTTD is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, version 2.
* OpenTTD 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 General Public License for more details. You should have received a copy of the GNU General Public License along with OpenTTD. If not, see <http://www.gnu.org/licenses/>.
*/
/** @file newgrf_profiling.cpp Profiling of NewGRF action 2 handling. */
#include "newgrf_profiling.h"
#include "date_func.h"
#include "fileio_func.h"
#include "string_func.h"
#include "console_func.h"
#include "spritecache.h"
#include <chrono>
#include <time.h>
std::vector<NewGRFProfiler> _newgrf_profilers;
Date _newgrf_profile_end_date;
/**
* Create profiler object and begin profiling session.
* @param grffile The GRF file to collect profiling data on
* @param end_date Game date to end profiling on
*/
NewGRFProfiler::NewGRFProfiler(const GRFFile *grffile) : grffile{ grffile }, active{ false }, cur_call{}
{
}
/**
* Complete profiling session and write data to file
*/
NewGRFProfiler::~NewGRFProfiler()
{
}
/**
* Capture the start of a sprite group resolution.
* @param resolver Data about sprite group being resolved
*/
void NewGRFProfiler::BeginResolve(const ResolverObject &resolver)
{
using namespace std::chrono;
this->cur_call.root_sprite = resolver.root_spritegroup->nfo_line;
this->cur_call.subs = 0;
this->cur_call.time = (uint32)time_point_cast<microseconds>(high_resolution_clock::now()).time_since_epoch().count();
this->cur_call.tick = _tick_counter;
this->cur_call.cb = resolver.callback;
this->cur_call.feat = resolver.GetFeature();
this->cur_call.item = resolver.GetDebugID();
}
/**
* Capture the completion of a sprite group resolution.
*/
void NewGRFProfiler::EndResolve(const SpriteGroup *result)
{
using namespace std::chrono;
this->cur_call.time = (uint32)time_point_cast<microseconds>(high_resolution_clock::now()).time_since_epoch().count() - this->cur_call.time;
if (result == nullptr) {
this->cur_call.result = 0;
} else if (result->type == SGT_CALLBACK) {
this->cur_call.result = static_cast<const CallbackResultSpriteGroup *>(result)->result;
} else if (result->type == SGT_RESULT) {
this->cur_call.result = GetSpriteLocalID(static_cast<const ResultSpriteGroup *>(result)->sprite);
} else {
this->cur_call.result = result->nfo_line;
}
this->calls.push_back(this->cur_call);
}
/**
* Capture a recursive sprite group resolution.
*/
void NewGRFProfiler::RecursiveResolve()
{
this->cur_call.subs += 1;
}
void NewGRFProfiler::Start()
{
this->Abort();
this->active = true;
this->start_tick = _tick_counter;
}
uint32 NewGRFProfiler::Finish()
{
if (!this->active) return 0;
if (this->calls.empty()) {
IConsolePrintF(CC_DEBUG, "Finished profile of NewGRF [%08X], no events collected, not writing a file", BSWAP32(this->grffile->grfid));
return 0;
}
std::string filename = this->GetOutputFilename();
IConsolePrintF(CC_DEBUG, "Finished profile of NewGRF [%08X], writing %u events to %s", BSWAP32(this->grffile->grfid), (uint)this->calls.size(), filename.c_str());
FILE *f = FioFOpenFile(filename, "wt", Subdirectory::NO_DIRECTORY);
FileCloser fcloser(f);
uint32 total_microseconds = 0;
fputs("Tick,Sprite,Feature,Item,CallbackID,Microseconds,Depth,Result\n", f);
for (const Call &c : this->calls) {
fprintf(f, "%u,%u,0x%X,%u,0x%X,%u,%u,%u\n", c.tick, c.root_sprite, c.feat, c.item, (uint)c.cb, c.time, c.subs, c.result);
total_microseconds += c.time;
}
this->Abort();
return total_microseconds;
}
void NewGRFProfiler::Abort()
{
this->active = false;
this->calls.clear();
}
/**
* Get name of the file that will be written.
* @return File name of profiling output file.
*/
std::string NewGRFProfiler::GetOutputFilename() const
{
time_t write_time = time(nullptr);
char timestamp[16] = {};
strftime(timestamp, lengthof(timestamp), "%Y%m%d-%H%M", localtime(&write_time));
char filepath[MAX_PATH] = {};
seprintf(filepath, lastof(filepath), "%sgrfprofile-%s-%08X.csv", FiosGetScreenshotDir(), timestamp, BSWAP32(this->grffile->grfid));
return std::string(filepath);
}
uint32 NewGRFProfiler::FinishAll()
{
int max_ticks = 0;
uint32 total_microseconds = 0;
for (NewGRFProfiler &pr : _newgrf_profilers) {
if (pr.active) {
total_microseconds += pr.Finish();
max_ticks = std::max(max_ticks, _tick_counter - pr.start_tick);
}
}
if (total_microseconds > 0 && max_ticks > 0) {
IConsolePrintF(CC_DEBUG, "Total NewGRF callback processing: %u microseconds over %d ticks", total_microseconds, max_ticks);
}
_newgrf_profile_end_date = MAX_DAY;
return total_microseconds;
}
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