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@ r25751:3154638283de
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Location: cpp/openttd-patchpack/source/src/newgrf_profiling.cpp
r25751:3154638283de
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Feature: framework to make savegames self-descriptive
We won't be able to make it fully self-descriptive (looking at you
MAP-chunks), but anything else can. With this framework, we can
add headers for each chunk explaining how each chunk looks like
in detail.
They also will all be tables, making it a lot easier to read in
external tooling, and opening the way to consider a database
(like SQLite) to use as savegame format.
Lastly, with the headers in the savegame, you can freely add
fields without needing a savegame version bump; older versions
of OpenTTD will simply ignore the new field. This also means
we can remove all the SLE_CONDNULL, as they are irrelevant.
The next few commits will start using this framework.
We won't be able to make it fully self-descriptive (looking at you
MAP-chunks), but anything else can. With this framework, we can
add headers for each chunk explaining how each chunk looks like
in detail.
They also will all be tables, making it a lot easier to read in
external tooling, and opening the way to consider a database
(like SQLite) to use as savegame format.
Lastly, with the headers in the savegame, you can freely add
fields without needing a savegame version bump; older versions
of OpenTTD will simply ignore the new field. This also means
we can remove all the SLE_CONDNULL, as they are irrelevant.
The next few commits will start using this framework.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 | /*
* 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 "walltime_func.h"
#include <chrono>
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()) {
IConsolePrint(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();
IConsolePrint(CC_DEBUG, "Finished profile of NewGRF [{:08X}], writing {} events to '{}'.", BSWAP32(this->grffile->grfid), this->calls.size(), filename);
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
{
char timestamp[16] = {};
LocalTime::Format(timestamp, lastof(timestamp), "%Y%m%d-%H%M");
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) {
IConsolePrint(CC_DEBUG, "Total NewGRF callback processing: {} microseconds over {} ticks.", total_microseconds, max_ticks);
}
_newgrf_profile_end_date = MAX_DAY;
return total_microseconds;
}
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