| // Copyright 2014 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.skyframe; |
| |
| import com.google.common.collect.Iterables; |
| |
| import java.util.Collection; |
| import java.util.Comparator; |
| import java.util.Map; |
| import java.util.Set; |
| import java.util.TreeMap; |
| import java.util.TreeSet; |
| |
| /** {@link NotifyingInMemoryGraph} that returns reverse deps ordered alphabetically. */ |
| public class DeterministicInMemoryGraph extends NotifyingInMemoryGraph { |
| private static final Comparator<SkyKey> ALPHABETICAL_SKYKEY_COMPARATOR = |
| new Comparator<SkyKey>() { |
| @Override |
| public int compare(SkyKey o1, SkyKey o2) { |
| return o1.toString().compareTo(o2.toString()); |
| } |
| }; |
| |
| public DeterministicInMemoryGraph(Listener listener) { |
| super(listener); |
| } |
| |
| public DeterministicInMemoryGraph() { |
| super(Listener.NULL_LISTENER); |
| } |
| |
| @Override |
| protected DeterministicValueEntry getEntry(SkyKey key) { |
| return new DeterministicValueEntry(key); |
| } |
| |
| @Override |
| public Map<SkyKey, NodeEntry> getBatch(Iterable<SkyKey> keys) { |
| Map<SkyKey, NodeEntry> result = new TreeMap<>(ALPHABETICAL_SKYKEY_COMPARATOR); |
| result.putAll(super.getBatch(keys)); |
| return result; |
| } |
| |
| /** |
| * This class uses TreeSet to store reverse dependencies of NodeEntry. As a result all values are |
| * lexicographically sorted. |
| */ |
| private class DeterministicValueEntry extends NotifyingNodeEntry { |
| private DeterministicValueEntry(SkyKey myKey) { |
| super(myKey); |
| } |
| |
| @SuppressWarnings("unchecked") |
| @Override |
| public synchronized Collection<SkyKey> getReverseDeps() { |
| TreeSet<SkyKey> result = new TreeSet<>(ALPHABETICAL_SKYKEY_COMPARATOR); |
| Iterables.addAll(result, super.getReverseDeps()); |
| return result; |
| } |
| |
| @Override |
| public synchronized Set<SkyKey> getInProgressReverseDeps() { |
| TreeSet<SkyKey> result = new TreeSet<>(ALPHABETICAL_SKYKEY_COMPARATOR); |
| result.addAll(buildingState.getReverseDepsToSignal()); |
| return result; |
| } |
| |
| @Override |
| public synchronized Set<SkyKey> getTemporaryDirectDeps() { |
| TreeSet<SkyKey> result = new TreeSet<>(ALPHABETICAL_SKYKEY_COMPARATOR); |
| result.addAll(super.getTemporaryDirectDeps()); |
| return result; |
| } |
| } |
| } |