| /* |
| * Copyright 2000-2009 JetBrains s.r.o. |
| * |
| * 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.intellij.openapi.vcs.impl; |
| |
| import com.intellij.openapi.application.Application; |
| import com.intellij.openapi.application.ApplicationManager; |
| import com.intellij.openapi.util.process.InterruptibleProcess; |
| |
| import java.io.IOException; |
| import java.io.InputStream; |
| import java.util.concurrent.ExecutionException; |
| import java.util.concurrent.Future; |
| import java.util.concurrent.TimeUnit; |
| import java.util.concurrent.TimeoutException; |
| |
| public abstract class ProcessWaiter<T extends CancellableRunnable> { |
| protected T myInStreamListener; |
| protected T myErrStreamListener; |
| |
| protected abstract T createStreamListener(final InputStream stream); |
| protected boolean tryReadStreams(final int rc) { |
| return true; |
| } |
| |
| public int execute(final InterruptibleProcess worker, final long timeout) throws IOException, ExecutionException, TimeoutException, InterruptedException { |
| myErrStreamListener = createStreamListener(worker.getErrorStream()); |
| myInStreamListener = createStreamListener(worker.getInputStream()); |
| |
| final Application app = ApplicationManager.getApplication(); |
| Future<?> errorStreamReadingFuture = null; |
| Future<?> outputStreamReadingFuture = null; |
| |
| final int rc; |
| try { |
| errorStreamReadingFuture = app.executeOnPooledThread(myErrStreamListener); |
| outputStreamReadingFuture = app.executeOnPooledThread(myInStreamListener); |
| rc = worker.execute(); |
| if (tryReadStreams(rc)) { |
| errorStreamReadingFuture.get(timeout, TimeUnit.MILLISECONDS); |
| outputStreamReadingFuture.get(timeout, TimeUnit.MILLISECONDS); |
| } |
| } finally { |
| cancelListeners(); |
| if (errorStreamReadingFuture != null) { |
| errorStreamReadingFuture.cancel(true); |
| } |
| if (outputStreamReadingFuture != null) { |
| outputStreamReadingFuture.cancel(true); |
| } |
| } |
| |
| return rc; |
| } |
| |
| public void cancelListeners() { |
| myErrStreamListener.cancel(); |
| myInStreamListener.cancel(); |
| } |
| |
| public T getInStreamListener() { |
| return myInStreamListener; |
| } |
| |
| public T getErrStreamListener() { |
| return myErrStreamListener; |
| } |
| } |