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/*
* Copyright (c) 2011, 2018, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
package vm.share.process;
import java.util.List;
import java.util.ArrayList;
import nsk.share.TestBug;
public class StreamMessageInput implements MessageInput {
private Object sync = new Object();
private List<String> lines = new ArrayList<String>();
private int position = 0;
private volatile boolean active = false;
private volatile Throwable exception;
public StreamMessageInput() {
}
public StreamMessageInput(StreamReader sd) {
bind(sd);
}
public StreamListener createListener() {
return new Listener();
}
public void bind(StreamReader sd) {
sd.addListener(createListener());
}
public boolean isActive() {
return active;
}
public boolean isException() {
return exception != null;
}
public Throwable getException() {
return exception;
}
public boolean waitForStart(long timeout) throws InterruptedException {
long startTime = System.currentTimeMillis();
long curTime = startTime;
synchronized (sync) {
while (!active && curTime - startTime < timeout) {
sync.wait(curTime - startTime);
curTime = System.currentTimeMillis();
}
}
return active;
}
public boolean waitForFinish(long timeout) throws InterruptedException {
long startTime = System.currentTimeMillis();
long curTime = startTime;
synchronized (sync) {
while (active && curTime - startTime < timeout) {
sync.wait(curTime - startTime);
curTime = System.currentTimeMillis();
}
}
return !active;
}
public boolean waitForMessage(String msg, long timeout) throws InterruptedException {
long startTime = System.currentTimeMillis();
long curTime = startTime;
int n = position;
synchronized (sync) {
while (curTime - startTime < timeout) {
while (n < lines.size()) {
// System.out.println("Check: " + lines.get(n));
if (msg == null || lines.get(n++).contains(msg)) {
return true;
}
}
sync.wait(timeout - (curTime - startTime));
curTime = System.currentTimeMillis();
}
return false;
}
}
public boolean waitForMessage(long timeout) throws InterruptedException {
return waitForMessage(null, timeout);
}
public String getMessage() {
if (position < lines.size())
return lines.get(position++);
else
return null;
}
public String getMessage(int index) {
return lines.get(index);
}
public int getPosition() {
return position;
}
public void setPosition(int position) {
this.position = position;
}
public int getMessageCount() {
return lines.size();
}
public List<String> getMessages() {
return getMessages(position, lines.size());
}
public List<String> getMessages(int to) {
return getMessages(position, to);
}
public List<String> getMessages(int from, int to) {
synchronized (sync) {
if (to < 0)
to = lines.size() + to;
position = Math.max(position, to);
return new ArrayList<String>(lines.subList(from, to));
}
}
public void reset() {
synchronized (sync) {
position = lines.size();
}
}
private class Listener implements StreamListener {
@Override
public void onStart() {
synchronized (sync) {
active = true;
sync.notifyAll();
}
}
@Override
public void onRead(String line) {
//System.out.println("onRead: " + line);
synchronized (sync) {
lines.add(line);
sync.notifyAll();
}
}
@Override
public void onFinish() {
synchronized (sync) {
active = false;
sync.notifyAll();
}
}
@Override
public void onException(Throwable e) {
exception = e;
}
}
}
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