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/*
* Copyright 2013 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*
* Classes for writing out bench results in various formats.
*/
#ifndef SkResultsWriter_DEFINED
#define SkResultsWriter_DEFINED
#include "BenchLogger.h"
#include "SkJSONCPP.h"
#include "SkStream.h"
#include "SkString.h"
#include "SkTArray.h"
#include "SkTypes.h"
/**
* Base class for writing out the bench results.
*
* TODO(jcgregorio) Add info if tests fail to converge?
*/
class ResultsWriter : SkNoncopyable {
public:
virtual ~ResultsWriter() {};
// Records one option set for this run. All options must be set before
// calling bench().
virtual void option(const char name[], const char value[]) = 0;
// Denotes the start of a specific benchmark. Once bench is called,
// then config and timer can be called multiple times to record runs.
virtual void bench(const char name[], int32_t x, int32_t y) = 0;
// Records the specific configuration a bench is run under, such as "8888".
virtual void config(const char name[]) = 0;
// Records a single test metric.
virtual void timer(const char name[], double ms) = 0;
// Call when all results are finished.
virtual void end() = 0;
};
/**
* This ResultsWriter handles writing out the human readable format of the
* bench results.
*/
class LoggerResultsWriter : public ResultsWriter {
public:
explicit LoggerResultsWriter(BenchLogger& logger, const char* timeFormat)
: fLogger(logger)
, fTimeFormat(timeFormat) {
fLogger.logProgress("skia bench:");
}
virtual void option(const char name[], const char value[]) {
fLogger.logProgress(SkStringPrintf(" %s=%s", name, value));
}
virtual void bench(const char name[], int32_t x, int32_t y) {
fLogger.logProgress(SkStringPrintf(
"\nrunning bench [%3d %3d] %40s", x, y, name));
}
virtual void config(const char name[]) {
fLogger.logProgress(SkStringPrintf(" %s:", name));
}
virtual void timer(const char name[], double ms) {
fLogger.logProgress(SkStringPrintf(" %s = ", name));
fLogger.logProgress(SkStringPrintf(fTimeFormat, ms));
}
virtual void end() {
fLogger.logProgress("\n");
}
private:
BenchLogger& fLogger;
const char* fTimeFormat;
};
/**
* This ResultsWriter handles writing out the results in JSON.
*
* The output looks like (except compressed to a single line):
*
* {
* "options" : {
* "alpha" : "0xFF",
* "scale" : "0",
* ...
* "system" : "UNIX"
* },
* "results" : [
* {
* "name" : "Xfermode_Luminosity_640_480",
* "results" : [
* {
* "name": "565",
* "cmsecs" : 143.188128906250,
* "msecs" : 143.835957031250
* },
* ...
*/
Json::Value* SkFindNamedNode(Json::Value* root, const char name[]);
class JSONResultsWriter : public ResultsWriter {
public:
explicit JSONResultsWriter(const char filename[])
: fFilename(filename)
, fRoot()
, fResults(fRoot["results"])
, fBench(NULL)
, fConfig(NULL) {
}
virtual void option(const char name[], const char value[]) {
fRoot["options"][name] = value;
}
virtual void bench(const char name[], int32_t x, int32_t y) {
SkString sk_name(name);
sk_name.append("_");
sk_name.appendS32(x);
sk_name.append("_");
sk_name.appendS32(y);
Json::Value* bench_node = SkFindNamedNode(&fResults, sk_name.c_str());
fBench = &(*bench_node)["results"];
}
virtual void config(const char name[]) {
SkASSERT(NULL != fBench);
fConfig = SkFindNamedNode(fBench, name);
}
virtual void timer(const char name[], double ms) {
SkASSERT(NULL != fConfig);
(*fConfig)[name] = ms;
}
virtual void end() {
SkFILEWStream stream(fFilename.c_str());
stream.writeText(Json::FastWriter().write(fRoot).c_str());
stream.flush();
}
private:
SkString fFilename;
Json::Value fRoot;
Json::Value& fResults;
Json::Value* fBench;
Json::Value* fConfig;
};
/**
* This ResultsWriter writes out to multiple ResultsWriters.
*/
class MultiResultsWriter : public ResultsWriter {
public:
MultiResultsWriter() : writers() {
};
void add(ResultsWriter* writer) {
writers.push_back(writer);
}
virtual void option(const char name[], const char value[]) {
for (int i = 0; i < writers.count(); ++i) {
writers[i]->option(name, value);
}
}
virtual void bench(const char name[], int32_t x, int32_t y) {
for (int i = 0; i < writers.count(); ++i) {
writers[i]->bench(name, x, y);
}
}
virtual void config(const char name[]) {
for (int i = 0; i < writers.count(); ++i) {
writers[i]->config(name);
}
}
virtual void timer(const char name[], double ms) {
for (int i = 0; i < writers.count(); ++i) {
writers[i]->timer(name, ms);
}
}
virtual void end() {
for (int i = 0; i < writers.count(); ++i) {
writers[i]->end();
}
}
private:
SkTArray<ResultsWriter *> writers;
};
/**
* Calls the end() method of T on destruction.
*/
template <typename T> class CallEnd : SkNoncopyable {
public:
CallEnd(T& obj) : fObj(obj) {}
~CallEnd() { fObj.end(); }
private:
T& fObj;
};
#endif
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