/*
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
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* 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).
*
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package sun.java2d.xr;
/**
* UInt32 "emulation", mimics the behaviour of xcb's request counter.
* In order to be compatible with xcb we have to wrap exactly when xcb would do.
* @author Clemens Eisserer
*/
public class XcbRequestCounter {
private final static long MAX_UINT = 4294967295L;
long value;
public XcbRequestCounter(long value) {
this.value = value;
}
public void setValue(long value) {
this.value = value;
}
public long getValue() {
return value;
}
public void add(long v) {
value += v;
/*Handle 32-bit unsigned int overflow*/
if (value > MAX_UINT) {
value = 0; //-= MAX_UINT; //Shouldn't that be zero?!?!
}
}
}