| // 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.lib.exec; |
| |
| import com.google.common.collect.ImmutableList; |
| import com.google.common.util.concurrent.ThreadFactoryBuilder; |
| import com.google.devtools.build.lib.actions.ActionContext; |
| import com.google.devtools.build.lib.actions.ExecutionStrategy; |
| import com.google.devtools.build.lib.events.Reporter; |
| import com.google.devtools.build.lib.rules.fileset.FilesetActionContext; |
| import java.util.concurrent.LinkedBlockingQueue; |
| import java.util.concurrent.ThreadPoolExecutor; |
| import java.util.concurrent.TimeUnit; |
| |
| /** |
| * Context for Fileset manifest actions. It currently only provides a ThreadPoolExecutor. |
| * |
| * <p>Fileset is a legacy, google-internal mechanism to make parts of the source tree appear as a |
| * tree in the output directory. |
| */ |
| @ExecutionStrategy(contextType = FilesetActionContext.class) |
| public final class FilesetActionContextImpl implements FilesetActionContext { |
| // TODO(bazel-team): it would be nice if this weren't shipped in Bazel at all. |
| |
| /** |
| * Factory class. |
| */ |
| public static class Provider extends ActionContextProvider { |
| private FilesetActionContextImpl impl; |
| private final Reporter reporter; |
| private final ThreadPoolExecutor filesetPool; |
| |
| public Provider(Reporter reporter, String workspaceName) { |
| this.reporter = reporter; |
| this.filesetPool = newFilesetPool(100); |
| this.impl = new FilesetActionContextImpl(filesetPool, workspaceName); |
| } |
| |
| private static ThreadPoolExecutor newFilesetPool(int threads) { |
| ThreadPoolExecutor pool = new ThreadPoolExecutor(threads, threads, 3L, TimeUnit.SECONDS, |
| new LinkedBlockingQueue<Runnable>()); |
| // Do not consume threads when not in use. |
| pool.allowCoreThreadTimeOut(true); |
| pool.setThreadFactory(new ThreadFactoryBuilder().setNameFormat("Fileset worker %d").build()); |
| return pool; |
| } |
| |
| @Override |
| public Iterable<? extends ActionContext> getActionContexts() { |
| return ImmutableList.of(impl); |
| } |
| |
| @Override |
| public void executionPhaseEnding() { |
| BlazeExecutor.shutdownHelperPool(reporter, filesetPool, "Fileset"); |
| } |
| } |
| |
| private final ThreadPoolExecutor filesetPool; |
| private final String workspaceName; |
| |
| private FilesetActionContextImpl(ThreadPoolExecutor filesetPool, String workspaceName) { |
| this.filesetPool = filesetPool; |
| this.workspaceName = workspaceName; |
| } |
| |
| @Override |
| public ThreadPoolExecutor getFilesetPool() { |
| return filesetPool; |
| } |
| |
| @Override |
| public String getWorkspaceName() { |
| return workspaceName; |
| } |
| } |