| /* |
| * Copyright 2014 Google Inc. |
| * |
| * 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.gwt.dev.codeserver; |
| |
| import com.google.gwt.core.ext.TreeLogger.Type; |
| |
| import java.util.concurrent.ExecutorService; |
| import java.util.concurrent.Executors; |
| |
| /** |
| * Executes requests to compile modules using Super Dev Mode. |
| * |
| * <p>Guarantees that only one thread invokes the GWT compiler at a time and reports |
| * progress on waiting jobs. |
| * |
| * <p>JobRunners are thread-safe. |
| */ |
| public class JobRunner { |
| private final JobEventTable table; |
| private final OutboxTable outboxes; |
| private final ExecutorService executor = Executors.newSingleThreadExecutor(); |
| |
| JobRunner(JobEventTable table, OutboxTable outboxes) { |
| this.table = table; |
| this.outboxes = outboxes; |
| } |
| |
| /** |
| * Submits a job to be executed. (Returns immediately.) |
| */ |
| synchronized void submit(final Job job) { |
| if (table.wasSubmitted(job)) { |
| throw new IllegalStateException("job already submitted: " + job.getId()); |
| } |
| job.onSubmitted(table); |
| executor.submit(new Runnable() { |
| @Override |
| public void run() { |
| recompile(job, outboxes); |
| } |
| }); |
| job.getLogger().log(Type.TRACE, "added job to queue"); |
| } |
| |
| private static void recompile(Job job, OutboxTable outboxes) { |
| job.getLogger().log(Type.INFO, "starting job: " + job.getId()); |
| job.getOutbox().recompile(job); |
| } |
| } |