| /* |
| * Copyright 2016 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.idea.blaze.base.scope.scopes; |
| |
| import com.google.common.collect.Lists; |
| import com.google.idea.blaze.base.scope.BlazeContext; |
| import com.google.idea.blaze.base.scope.BlazeScope; |
| import com.google.idea.blaze.base.scope.output.PrintOutput; |
| import org.jetbrains.annotations.NotNull; |
| import org.jetbrains.annotations.Nullable; |
| |
| import java.util.List; |
| |
| /** |
| * Prints timing information as output. |
| */ |
| public class TimingScope implements BlazeScope { |
| |
| @NotNull |
| private final String name; |
| |
| private long startTime; |
| |
| private double duration; |
| |
| @Nullable |
| private TimingScope parentScope; |
| |
| @NotNull |
| private List<TimingScope> children = Lists.newArrayList(); |
| |
| public TimingScope(@NotNull String name) { |
| this.name = name; |
| } |
| |
| @Override |
| public void onScopeBegin(@NotNull BlazeContext context) { |
| startTime = System.currentTimeMillis(); |
| parentScope = context.getParentScope(this); |
| |
| if (parentScope != null) { |
| parentScope.children.add(this); |
| } |
| } |
| |
| @Override |
| public void onScopeEnd(@NotNull BlazeContext context) { |
| if (context.isCancelled()) { |
| return; |
| } |
| |
| long elapsedTime = System.currentTimeMillis() - startTime; |
| duration = (double)elapsedTime / 1000.0; |
| |
| if (parentScope == null) { |
| outputReport(context); |
| } |
| } |
| |
| private void outputReport(@NotNull BlazeContext context) { |
| context.output(new PrintOutput("\n==== TIMING REPORT ====\n")); |
| outputReport(context, this, 0); |
| } |
| |
| private static void outputReport( |
| @NotNull BlazeContext context, |
| @NotNull TimingScope timingScope, |
| int depth) { |
| String selfString = ""; |
| |
| // Self time trivially 100% if no children |
| if (timingScope.children.size() > 0) { |
| // Calculate self time as <my duration> - <sum child duration> |
| double selfTime = timingScope.duration; |
| for (TimingScope child : timingScope.children) { |
| selfTime -= child.duration; |
| } |
| |
| selfString = selfTime > 0.1 |
| ? String.format(" (%s)", durationStr(selfTime)) |
| : ""; |
| } |
| |
| context.output(new PrintOutput( |
| String.format("%s%s: %s%s", |
| getIndentation(depth), |
| timingScope.name, |
| durationStr(timingScope.duration), |
| selfString) |
| )); |
| |
| for (TimingScope child : timingScope.children) { |
| outputReport(context, child, depth + 1); |
| } |
| } |
| |
| private static String durationStr(double time) { |
| return time >= 1.0 |
| ? String.format("%.1fs", time) |
| : String.format("%dms", (int)(time * 1000)); |
| } |
| |
| private static String getIndentation(int depth) { |
| StringBuilder sb = new StringBuilder(); |
| for (int i = 0; i < depth; ++i) { |
| sb.append(" "); |
| } |
| return sb.toString(); |
| } |
| } |