/*
* Copyright (c) 2020, 2020, 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
* questions.
*/
package com.oracle.svm.core.genscavenge;
public class LinearImageHeapAllocator {
private long position;
public LinearImageHeapAllocator(long position) {
this.position = position;
}
public long getPosition() {
return position;
}
public long allocate(long size) {
long begin = position;
position += size;
return begin;
}
public void align(int multiple) {
allocate(computePadding(position, multiple));
}
static long computePadding(long offset, int alignment) {
long remainder = offset % alignment;
return remainder == 0 ? 0 : alignment - remainder;
}
}