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package sun.java2d.xr;

Class provides unused XIDs, used for creating server-side objects
created by the java backend.
It does buffering, to minimize JNI overhead.
Author:
Clemens Eisserer/**
 * Class provides unused XIDs, used for creating server-side objects
 * created by the java backend.
 * It does buffering, to minimize JNI overhead.
 *
 * @author Clemens Eisserer
 */

public class XIDGenerator {
    private static final int XID_BUFFER_SIZE = 512;

    int[] xidBuffer = new int[XID_BUFFER_SIZE];
    int currentIndex = XID_BUFFER_SIZE;

    public int getNextXID() {

        if (currentIndex >= XID_BUFFER_SIZE) {
            bufferXIDs(xidBuffer, xidBuffer.length);
            currentIndex = 0;
        }

        return xidBuffer[currentIndex++];
    }

    private static native void bufferXIDs(int[] buffer, int arraySize);
}