/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.activemq.artemis.core.io.mapped;
import java.nio.ByteBuffer;
import io.netty.util.internal.PlatformDependent;
final class BytesUtils {
private BytesUtils() {
}
public static long align(final long value, final long alignment) {
return (value + (alignment - 1)) & ~(alignment - 1);
}
public static void zerosDirect(final ByteBuffer buffer) {
//TODO When PlatformDependent will be replaced by VarHandle or Unsafe, replace with safepoint-fixed setMemory
//DANGEROUS!! erases bound-checking using directly addresses -> safe only if it use counted loops
int remaining = buffer.capacity();
long address = PlatformDependent.directBufferAddress(buffer);
while (remaining >= 8) {
PlatformDependent.putLong(address, 0L);
address += 8;
remaining -= 8;
}
while (remaining > 0) {
PlatformDependent.putByte(address, (byte) 0);
address++;
remaining--;
}
}
}