8161236: Runtime.Version.{compareTo, equals}IgnoreOpt should be renamed
Reviewed-by: alanb, rfield, ksrini
/*
* Copyright (c) 2016, 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. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* 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
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*/
package jdk.jshell.execution;
import java.io.InputStream;
/**
*
* @author Jan Lahoda
*/
class PipeInputStream extends InputStream {
private static final int INITIAL_SIZE = 128;
private int[] buffer = new int[INITIAL_SIZE];
private int start;
private int end;
private boolean closed;
@Override
public synchronized int read() {
while (start == end) {
if (closed) {
return -1;
}
try {
wait();
} catch (InterruptedException ex) {
//ignore
}
}
try {
return buffer[start];
} finally {
start = (start + 1) % buffer.length;
}
}
public synchronized void write(int b) {
if (closed) {
throw new IllegalStateException("Already closed.");
}
int newEnd = (end + 1) % buffer.length;
if (newEnd == start) {
//overflow:
int[] newBuffer = new int[buffer.length * 2];
int rightPart = (end > start ? end : buffer.length) - start;
int leftPart = end > start ? 0 : start - 1;
System.arraycopy(buffer, start, newBuffer, 0, rightPart);
System.arraycopy(buffer, 0, newBuffer, rightPart, leftPart);
buffer = newBuffer;
start = 0;
end = rightPart + leftPart;
newEnd = end + 1;
}
buffer[end] = b;
end = newEnd;
notifyAll();
}
@Override
public synchronized void close() {
closed = true;
notifyAll();
}
}