| // 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.skyframe; |
| |
| import com.google.common.annotations.VisibleForTesting; |
| import com.google.common.collect.ImmutableSortedSet; |
| import com.google.common.collect.Interner; |
| import com.google.devtools.build.lib.analysis.config.BuildConfiguration; |
| import com.google.devtools.build.lib.analysis.config.BuildOptions; |
| import com.google.devtools.build.lib.analysis.config.FragmentClassSet; |
| import com.google.devtools.build.lib.concurrent.BlazeInterners; |
| import com.google.devtools.build.lib.concurrent.ThreadSafety.ThreadSafe; |
| import com.google.devtools.build.lib.skyframe.serialization.autocodec.AutoCodec; |
| import com.google.devtools.build.lib.skyframe.serialization.autocodec.AutoCodec.VisibleForSerialization; |
| import com.google.devtools.build.skyframe.SkyFunctionName; |
| import com.google.devtools.build.skyframe.SkyKey; |
| import com.google.devtools.build.skyframe.SkyValue; |
| import java.io.Serializable; |
| import java.util.Objects; |
| import java.util.Set; |
| import java.util.logging.Logger; |
| |
| /** A Skyframe value representing a {@link BuildConfiguration}. */ |
| // TODO(bazel-team): mark this immutable when BuildConfiguration is immutable. |
| // @Immutable |
| @AutoCodec |
| @ThreadSafe |
| public class BuildConfigurationValue implements SkyValue { |
| private static final Logger logger = Logger.getLogger(BuildConfigurationValue.class.getName()); |
| private final BuildConfiguration configuration; |
| |
| BuildConfigurationValue(BuildConfiguration configuration) { |
| this.configuration = configuration; |
| } |
| |
| public BuildConfiguration getConfiguration() { |
| return configuration; |
| } |
| |
| /** |
| * Returns the key for a requested configuration. |
| * |
| * @param fragments the fragments the configuration should contain |
| * @param optionsDiff the {@link BuildOptions.OptionsDiffForReconstruction} object the {@link |
| * BuildOptions} should be rebuilt from |
| */ |
| @ThreadSafe |
| public static Key key( |
| Set<Class<? extends BuildConfiguration.Fragment>> fragments, |
| BuildOptions.OptionsDiffForReconstruction optionsDiff) { |
| return Key.create( |
| FragmentClassSet.of( |
| ImmutableSortedSet.copyOf(BuildConfiguration.lexicalFragmentSorter, fragments)), |
| optionsDiff); |
| } |
| |
| public static Key key( |
| FragmentClassSet fragmentClassSet, BuildOptions.OptionsDiffForReconstruction optionsDiff) { |
| return Key.create(fragmentClassSet, optionsDiff); |
| } |
| |
| public static Key key(BuildConfiguration buildConfiguration) { |
| return key(buildConfiguration.fragmentClasses(), buildConfiguration.getBuildOptionsDiff()); |
| } |
| |
| /** {@link SkyKey} for {@link BuildConfigurationValue}. */ |
| @AutoCodec |
| public static final class Key implements SkyKey, Serializable { |
| private static final Interner<Key> keyInterner = BlazeInterners.newWeakInterner(); |
| |
| private final FragmentClassSet fragments; |
| final BuildOptions.OptionsDiffForReconstruction optionsDiff; |
| // If hashCode really is -1, we'll recompute it from scratch each time. Oh well. |
| private volatile int hashCode = -1; |
| |
| @AutoCodec.Instantiator |
| @VisibleForSerialization |
| static Key create( |
| FragmentClassSet fragments, BuildOptions.OptionsDiffForReconstruction optionsDiff) { |
| return keyInterner.intern(new Key(fragments, optionsDiff)); |
| } |
| |
| private Key(FragmentClassSet fragments, BuildOptions.OptionsDiffForReconstruction optionsDiff) { |
| this.fragments = fragments; |
| this.optionsDiff = optionsDiff; |
| } |
| |
| @VisibleForTesting |
| public ImmutableSortedSet<Class<? extends BuildConfiguration.Fragment>> getFragments() { |
| return fragments.fragmentClasses(); |
| } |
| |
| public BuildOptions.OptionsDiffForReconstruction getOptionsDiff() { |
| return optionsDiff; |
| } |
| |
| @Override |
| public SkyFunctionName functionName() { |
| return SkyFunctions.BUILD_CONFIGURATION; |
| } |
| |
| @Override |
| public boolean equals(Object o) { |
| if (this == o) { |
| return true; |
| } |
| if (!(o instanceof Key)) { |
| return false; |
| } |
| Key otherConfig = (Key) o; |
| return optionsDiff.equals(otherConfig.optionsDiff) |
| && Objects.equals(fragments, otherConfig.fragments); |
| } |
| |
| @Override |
| public int hashCode() { |
| if (hashCode == -1) { |
| hashCode = Objects.hash(fragments, optionsDiff); |
| } |
| return hashCode; |
| } |
| |
| @Override |
| public String toString() { |
| return "BuildConfigurationValue.Key[" + optionsDiff.getChecksum() + "]"; |
| } |
| } |
| } |