ivandasch commented on a change in pull request #9569: URL: https://github.com/apache/ignite/pull/9569#discussion_r766623319
########## File path: modules/numa-allocator/src/main/java/org/apache/ignite/mem/InterleavedNumaAllocationStrategy.java ########## @@ -0,0 +1,78 @@ +/* + * 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.ignite.mem; + +import java.io.Serializable; +import java.util.Arrays; +import org.apache.ignite.internal.mem.NumaAllocUtil; +import org.apache.ignite.internal.util.tostring.GridToStringBuilder; +import org.apache.ignite.internal.util.tostring.GridToStringInclude; +import org.apache.ignite.internal.util.typedef.internal.A; + +/** + * Interleaved NUMA allocation strategy. + * <p> + * Use {@link InterleavedNumaAllocationStrategy#InterleavedNumaAllocationStrategy()} to allocate memory interleaved + * on all available NUMA nodes. Memory will be allocated using {@code void *numa_alloc_interleaved(size_t)} + * of {@code libnuma}. + * <p> + * Use {@link InterleavedNumaAllocationStrategy#InterleavedNumaAllocationStrategy(int[])} to allocate memory interleaved + * on specified nodes. + * {@code void *numa_alloc_interleaved_subset(size_t, struct bitmask*)} of {@code lubnuma}. + */ +public class InterleavedNumaAllocationStrategy implements NumaAllocationStrategy, Serializable { + /** */ + private static final long serialVersionUID = 0L; + + /** */ + @GridToStringInclude + private final int[] nodes; + + /** */ + public InterleavedNumaAllocationStrategy() { + this(null); + } + + /** + * @param nodes Array of NUMA nodes to allocate on. + */ + public InterleavedNumaAllocationStrategy(int[] nodes) { + if (nodes != null && nodes.length > 0) { + this.nodes = Arrays.copyOf(nodes, nodes.length); + + Arrays.sort(this.nodes); + A.ensure(this.nodes[0] >= 0, "NUMA node number must be positive, passed instead " + + Arrays.toString(this.nodes)); + A.ensure(this.nodes[this.nodes.length - 1] < NumaAllocUtil.NUMA_NODES_CNT, Review comment: Yep, they can. -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: [email protected] For queries about this service, please contact Infrastructure at: [email protected]
