Reland https://codereview.chromium.org/286903025

tools/PictureResultsWriter.h

Index: tools/PictureResultsWriter.h
diff --git a/tools/PictureResultsWriter.h b/tools/PictureResultsWriter.h
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index 0000000000000000000000000000000000000000..0571e80d056031a00398e4db0e18d7a88d57f15f
--- /dev/null
+++ b/tools/PictureResultsWriter.h
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+/*
+ * Copyright 2014 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 SkPictureResultsWriter_DEFINED
+#define SkPictureResultsWriter_DEFINED
+
+#include "ResultsWriter.h"
+#include "SkBenchLogger.h"
+#include "SkJSONCPP.h"
+#include "SkStream.h"
+#include "SkString.h"
+#include "SkTArray.h"
+
+/**
+ * Base class for writing picture bench results.
+ */
+class PictureResultsWriter : SkNoncopyable {
+public:
+    enum TileFlags {kPurging, kAvg};
+
+    PictureResultsWriter() {}
+    virtual ~PictureResultsWriter() {}
+
+    virtual void bench(const char name[], int32_t x, int32_t y) = 0;
+    virtual void tileConfig(SkString configName) = 0;
+    virtual void tileMeta(int x, int y, int tx, int ty) = 0;
+    virtual void addTileFlag(PictureResultsWriter::TileFlags flag) = 0;
+    virtual void tileData(
+            TimerData* data, 
+            const char format[], 
+            const TimerData::Result result,
+            uint32_t timerTypes,
+            int numInnerLoops = 1) = 0;
+   virtual void end() = 0;
+};
+
+/**
+ * This class allows bench data to be piped into multiple
+ * PictureResultWriter classes. It does not own any classes
+ * passed to it, so the owner is required to manage any classes
+ * passed to PictureResultsMultiWriter */
+class PictureResultsMultiWriter : public PictureResultsWriter {
+public:
+    PictureResultsMultiWriter() 
+        : fWriters() {}
+    void add(PictureResultsWriter* newWriter) {
+        fWriters.push_back(newWriter);
+    }
+    virtual ~PictureResultsMultiWriter() {}
+    virtual void bench(const char name[], int32_t x, int32_t y) {
+        for(int i=0; i<fWriters.count(); ++i) {
+            fWriters[i]->bench(name, x, y);
+        }
+    }
+    virtual void tileConfig(SkString configName) {
+        for(int i=0; i<fWriters.count(); ++i) {
+            fWriters[i]->tileConfig(configName);
+        }
+    }
+    virtual void tileMeta(int x, int y, int tx, int ty) {
+        for(int i=0; i<fWriters.count(); ++i) {
+            fWriters[i]->tileMeta(x, y, tx, ty);
+        }
+    }
+    virtual void addTileFlag(PictureResultsWriter::TileFlags flag) {
+        for(int i=0; i<fWriters.count(); ++i) {
+            fWriters[i]->addTileFlag(flag);
+        }
+    }
+    virtual void tileData(
+            TimerData* data, 
+            const char format[], 
+            const TimerData::Result result,
+            uint32_t timerTypes,
+            int numInnerLoops = 1) {
+        for(int i=0; i<fWriters.count(); ++i) {
+            fWriters[i]->tileData(data, format, result, timerTypes, 
+                                 numInnerLoops);
+        }
+    }
+   virtual void end() {
+        for(int i=0; i<fWriters.count(); ++i) {
+            fWriters[i]->end();
+        }
+   }
+private:
+    SkTArray<PictureResultsWriter*> fWriters;
+};
+
+/**
+ * Writes to SkBenchLogger to mimic original behavior
+ */
+class PictureResultsLoggerWriter : public PictureResultsWriter {    
+private:
+    void logProgress(const char str[]) {
+        if(fLogger != NULL) {
+            fLogger->logProgress(str);
+        }
+    }
+public:
+    PictureResultsLoggerWriter(SkBenchLogger* log)
+          : fLogger(log), currentLine() {}
+    virtual void bench(const char name[], int32_t x, int32_t y) {
+        SkString result;
+        result.printf("running bench [%i %i] %s ", x, y, name);
+        this->logProgress(result.c_str());
+    }
+    virtual void tileConfig(SkString configName) {
+        currentLine = configName;
+    }
+    virtual void tileMeta(int x, int y, int tx, int ty) {
+        currentLine.appendf(": tile [%i,%i] out of [%i,%i]", x, y, tx, ty);
+    }
+    virtual void addTileFlag(PictureResultsWriter::TileFlags flag) {
+        if(flag == PictureResultsWriter::kPurging) {
+            currentLine.append(" <withPurging>");
+        } else if(flag == PictureResultsWriter::kAvg) {
+            currentLine.append(" <averaged>");
+        }
+    }
+    virtual void tileData(
+            TimerData* data, 
+            const char format[], 
+            const TimerData::Result result,
+            uint32_t timerTypes,
+            int numInnerLoops = 1) {
+        SkString results = data->getResult(format, result,
+                currentLine.c_str(), timerTypes, numInnerLoops);
+        results.append("\n");
+        this->logProgress(results.c_str());
+    }
+    virtual void end() {}
+private:
+    SkBenchLogger* fLogger;
+    SkString currentLine;
+};
+
+#ifdef SK_BUILD_JSON_WRITER
+/**
+ * This PictureResultsWriter collects data in a JSON node
+ *
+ * The format is something like
+ * {
+ *      benches: [
+ *          {
+ *              name: "Name_of_test"
+ *              tilesets: [
+ *                  {
+ *                      name: "Name of the configuration"
+ *                      tiles: [
+ *                          {
+ *                              flags: {
+ *                                  purging: true //Flags for the current tile
+ *                                              // are put here
+ *                              }
+ *                              data: {
+ *                                  wsecs: [....] //Actual data ends up here
+ *                              }
+ *                          }
+ *                      ]
+ *                  }
+ *              ]
+ *          }
+ *      ]
+ * }*/
+
+class PictureJSONResultsWriter : public PictureResultsWriter {
+public:
+    PictureJSONResultsWriter(const char filename[])
+        : fFilename(filename),
+          fRoot(), 
+          fCurrentBench(NULL),
+          fCurrentTileSet(NULL),
+          fCurrentTile(NULL) {}
+
+    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(&fRoot["benches"], sk_name.c_str());
+        fCurrentBench = &(*bench_node)["tileSets"];
+    }
+    virtual void tileConfig(SkString configName) {
+        SkASSERT(fCurrentBench != NULL);
+        fCurrentTileSet = SkFindNamedNode(fCurrentBench, configName.c_str());
+        fCurrentTile = &(*fCurrentTileSet)["tiles"][0];
+    }
+    virtual void tileMeta(int x, int y, int tx, int ty) {
+        SkASSERT(fCurrentTileSet != NULL);
+        (*fCurrentTileSet)["tx"] = tx;
+        (*fCurrentTileSet)["ty"] = ty;
+        fCurrentTile = &(*fCurrentTileSet)["tiles"][x+tx*y];
+    }
+    virtual void addTileFlag(PictureResultsWriter::TileFlags flag) {
+        SkASSERT(fCurrentTile != NULL);
+        if(flag == PictureResultsWriter::kPurging) {
+            (*fCurrentTile)["flags"]["purging"] = true;
+        } else if(flag == PictureResultsWriter::kAvg) {
+            (*fCurrentTile)["flags"]["averaged"] = true;
+        }
+    }
+    virtual void tileData(
+            TimerData* data, 
+            const char format[], 
+            const TimerData::Result result,
+            uint32_t timerTypes,
+            int numInnerLoops = 1) {
+        SkASSERT(fCurrentTile != NULL);
+        (*fCurrentTile)["data"] = data->getJSON(timerTypes, result, numInnerLoops);
+    }
+    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 *fCurrentBench;
+    Json::Value *fCurrentTileSet;
+    Json::Value *fCurrentTile;
+};
+#endif // SK_BUILD_JSON_WRITER
+
+#endif