| // 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.statistics; |
| |
| import static com.google.devtools.build.lib.profiler.ProfilerTask.CRITICAL_PATH; |
| |
| import com.google.common.collect.ImmutableList; |
| import com.google.devtools.build.lib.profiler.ProfilerTask; |
| import com.google.devtools.build.lib.profiler.TraceEvent; |
| import com.google.devtools.build.lib.profiler.analysis.ProfileInfo; |
| import com.google.devtools.build.lib.profiler.analysis.ProfileInfo.Task; |
| import java.time.Duration; |
| import java.util.List; |
| |
| /** |
| * Keeps a predefined list of {@link Task}'s cumulative durations and allows iterating over pairs of |
| * their descriptions and relative durations. |
| */ |
| public final class CriticalPathStatistics { |
| private final ImmutableList<TraceEvent> criticalPathEntries; |
| private Duration totalDuration = Duration.ZERO; |
| |
| public CriticalPathStatistics(ProfileInfo info) { |
| ImmutableList.Builder<TraceEvent> criticalPathEntriesBuilder = new ImmutableList.Builder<>(); |
| for (Task task : info.rootTasksById) { |
| if (task.type == CRITICAL_PATH) { |
| for (Task criticalPathEntry : task.subtasks) { |
| totalDuration = totalDuration.plus(Duration.ofNanos(criticalPathEntry.durationNanos)); |
| criticalPathEntriesBuilder.add( |
| TraceEvent.create( |
| ProfilerTask.CRITICAL_PATH_COMPONENT.description, |
| criticalPathEntry.getDescription(), |
| Duration.ofNanos(criticalPathEntry.startTime), |
| Duration.ofNanos(criticalPathEntry.durationNanos), |
| criticalPathEntry.threadId)); |
| } |
| } |
| } |
| this.criticalPathEntries = criticalPathEntriesBuilder.build(); |
| } |
| |
| public CriticalPathStatistics(List<TraceEvent> traceEvents) { |
| ImmutableList.Builder<TraceEvent> criticalPathEntriesBuilder = new ImmutableList.Builder<>(); |
| for (TraceEvent traceEvent : traceEvents) { |
| if (ProfilerTask.CRITICAL_PATH_COMPONENT.description.equals(traceEvent.category())) { |
| criticalPathEntriesBuilder.add(traceEvent); |
| totalDuration = totalDuration.plus(traceEvent.duration()); |
| } |
| } |
| this.criticalPathEntries = criticalPathEntriesBuilder.build(); |
| } |
| |
| public Duration getTotalDuration() { |
| return totalDuration; |
| } |
| |
| public ImmutableList<TraceEvent> getCriticalPathEntries() { |
| return criticalPathEntries; |
| } |
| } |
| |