| // Copyright 2018 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.serialization; |
| |
| import static sun.misc.Unsafe.ARRAY_OBJECT_BASE_OFFSET; |
| import static sun.misc.Unsafe.ARRAY_OBJECT_INDEX_SCALE; |
| |
| import com.google.common.collect.ImmutableSet; |
| import com.google.common.collect.ImmutableTable; |
| import com.google.common.collect.Table.Cell; |
| import com.google.protobuf.CodedInputStream; |
| import com.google.protobuf.CodedOutputStream; |
| import java.io.IOException; |
| |
| /** Codec for {@link ImmutableTable}. */ |
| @SuppressWarnings({"rawtypes", "unchecked"}) |
| public class ImmutableTableCodec extends DeferredObjectCodec<ImmutableTable> { |
| |
| @Override |
| public Class<ImmutableTable> getEncodedClass() { |
| return ImmutableTable.class; |
| } |
| |
| @Override |
| public void serialize( |
| SerializationContext context, ImmutableTable object, CodedOutputStream codedOut) |
| throws SerializationException, IOException { |
| ImmutableSet<Cell> cellSet = object.cellSet(); |
| codedOut.writeInt32NoTag(cellSet.size()); |
| for (Cell cell : cellSet) { |
| context.serialize(cell.getRowKey(), codedOut); |
| context.serialize(cell.getColumnKey(), codedOut); |
| context.serialize(cell.getValue(), codedOut); |
| } |
| } |
| |
| @Override |
| public DeferredValue<ImmutableTable> deserializeDeferred( |
| AsyncDeserializationContext context, CodedInputStream codedIn) |
| throws SerializationException, IOException { |
| int size = codedIn.readInt32(); |
| if (size < 0) { |
| throw new SerializationException("Expected non-negative size: " + size); |
| } |
| if (size == 0) { |
| return ImmutableTable::of; |
| } |
| |
| EntryBuffer buffer = new EntryBuffer(size); |
| long offset = ARRAY_OBJECT_BASE_OFFSET; |
| for (int i = 0; i < size; i++) { |
| context.deserialize(codedIn, buffer.rowKeys, offset); |
| context.deserialize(codedIn, buffer.columnKeys, offset); |
| context.deserialize(codedIn, buffer.values, offset); |
| offset += ARRAY_OBJECT_INDEX_SCALE; |
| } |
| return buffer; |
| } |
| |
| private static final class EntryBuffer implements DeferredValue<ImmutableTable> { |
| private final Object[] rowKeys; |
| private final Object[] columnKeys; |
| private final Object[] values; |
| |
| private EntryBuffer(int size) { |
| this.rowKeys = new Object[size]; |
| this.columnKeys = new Object[size]; |
| this.values = new Object[size]; |
| } |
| |
| @Override |
| public ImmutableTable call() { |
| ImmutableTable.Builder builder = ImmutableTable.builder(); |
| for (int i = 0; i < size(); i++) { |
| builder.put( |
| /* rowKey= */ rowKeys[i], /* columnKey= */ columnKeys[i], /* value= */ values[i]); |
| } |
| return builder.buildOrThrow(); |
| } |
| |
| private int size() { |
| return rowKeys.length; |
| } |
| } |
| } |