Add combine option for multiple profile file stats

Add the --combine option to produce a single aggregated statistics output for
multiple profile files. Outputs neither Skylark histograms nor the task chart.

--
MOS_MIGRATED_REVID=105051164

1 files changed, 110 insertions, 0 deletions

diff --git a/src/main/java/com/google/devtools/build/lib/profiler/output/MultiProfilePhaseHtml.java b/src/main/java/com/google/devtools/build/lib/profiler/output/MultiProfilePhaseHtml.java
new file mode 100644
index 0000000000..cbde62b4b4
--- /dev/null
+++ b/src/main/java/com/google/devtools/build/lib/profiler/output/MultiProfilePhaseHtml.java
@@ -0,0 +1,110 @@
+// Copyright 2015 The Bazel Authors. All rights reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//    http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+package com.google.devtools.build.lib.profiler.output;
+
+import com.google.devtools.build.lib.profiler.ProfilePhase;
+import com.google.devtools.build.lib.profiler.ProfilerTask;
+import com.google.devtools.build.lib.profiler.statistics.MultiProfileStatistics;
+import com.google.devtools.build.lib.profiler.statistics.PhaseStatistics;
+import com.google.devtools.build.lib.util.TimeUtilities;
+import com.google.devtools.build.lib.vfs.Path;
+
+import java.io.PrintStream;
+import java.util.EnumMap;
+
+/**
+ * Formats the per file phase statistics from {@link MultiProfileStatistics} into HTML tables.
+ */
+public final class MultiProfilePhaseHtml extends HtmlPrinter {
+
+  private final MultiProfileStatistics statistics;
+
+  public MultiProfilePhaseHtml(PrintStream out, MultiProfileStatistics statistics) {
+    super(out);
+    this.statistics = statistics;
+  }
+
+  /**
+   * Prints CSS definitions and JavaScript code.
+   */
+  void printHtmlHead() {
+    lnOpen("style", "type", "text/css", "<!--");
+    lnPrint("div.profiles-table {");
+    lnPrint("  width: 95%; margin: 0 auto; height: auto;");
+    lnPrint("}");
+    lnPrint("-->");
+    close(); // style
+  }
+
+  /**
+   * Prints the table data and JS for each phase and file.
+   *
+   * <p>Code must be added to the callback that is run when the Visualization library has loaded.
+   */
+  public void printVisualizationCallbackJs() {
+    lnPrint("var multiData;");
+    lnPrint("var statsDiv;");
+    lnPrint("var profileTable;");
+    for (ProfilePhase phase : statistics.getSummaryStatistics()) {
+      lnPrintf("statsDiv = document.getElementById('profile_file_stats_%s');", phase.nick);
+      lnPrint("multiData = new google.visualization.DataTable();");
+      lnPrint("multiData.addColumn('string', 'File');");
+      lnPrint("multiData.addColumn('number', 'total');");
+      PhaseStatistics summaryPhaseStatistics = statistics.getSummaryPhaseStatistics(phase);
+      for (ProfilerTask taskType : summaryPhaseStatistics) {
+        lnPrintf("multiData.addColumn('number', '%s %%');", taskType.name());
+      }
+      lnPrint("multiData.addRows([");
+      down();
+      for (Path file : statistics) {
+        EnumMap<ProfilePhase, PhaseStatistics> phases = statistics.getPhaseStatistics(file);
+        PhaseStatistics phaseStatistics = phases.get(phase);
+        lnPrintf("['%s', ", file);
+        long phaseDuration = phaseStatistics.getPhaseDurationNanos();
+        printf("{v:%d, f:'%s'}, ", phaseDuration, TimeUtilities.prettyTime(phaseDuration));
+        for (ProfilerTask taskType : summaryPhaseStatistics) {
+          if (phaseStatistics.wasExecuted(taskType)) {
+            double relative = phaseStatistics.getTotalRelativeDuration(taskType);
+            printf("{v:%.4f, f:'%.3f %%'}, ", relative, relative * 100);
+          } else {
+            print("0, ");
+          }
+        }
+        print("],");
+      }
+      lnPrint("]);");
+      up();
+      lnPrint("profileTable = new google.visualization.Table(statsDiv);");
+      lnPrint("profileTable.draw(multiData, {showRowNumber: true, width: '100%%'});");
+    }
+  }
+
+  /**
+   * Prints divs for the tables of statistics for profile files and their phases.
+   */
+  void printHtmlBody() {
+    lnPrint("<a name='profile_file_stats'/>");
+    lnElement("h3", "Profile File Statistics");
+    lnOpen("div", "class", "profiles-tables", "id", "profile_file_stats");
+    for (ProfilePhase phase : statistics.getSummaryStatistics()) {
+      lnOpen("div");
+      lnElement("h4", phase.nick);
+      lnElement("div", "class", "profiles-table", "id", "profile_file_stats_" + phase.nick);
+      lnClose();
+    }
+    lnClose(); // div
+  }
+}
+
+