blob: bc9ab56fafc1ecb6fee3928e91b4974f9e197ab9 [file] [log] [blame]
// 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.testutil;
import com.google.common.base.Throwables;
import java.util.concurrent.atomic.AtomicInteger;
/**
* {@link ThrowableRecordingRunnableWrapper} that can throw if one task has thrown an exception but
* others are still processing.
*/
public class TestRunnableWrapper extends ThrowableRecordingRunnableWrapper {
// Because IncrementableCountDownLatch isn't public, we have to use a hacky AtomicInteger.
private final AtomicInteger runningTasks = new AtomicInteger(0);
public TestRunnableWrapper(String name) {
super(name);
}
public void waitForTasksAndMaybeThrow() throws Exception {
Throwable firstThrownError;
do {
firstThrownError = getFirstThrownError();
if (firstThrownError != null) {
Throwables.propagateIfPossible(firstThrownError);
throw new RuntimeException(firstThrownError);
}
Thread.sleep(100);
} while (runningTasks.get() > 0);
}
@Override
public Runnable wrap(final Runnable runnable) {
final Runnable wrapped = super.wrap(runnable);
return new Runnable() {
@Override
public void run() {
runningTasks.incrementAndGet();
try {
wrapped.run();
} finally {
runningTasks.decrementAndGet();
}
}
};
}
}