flink-runtime/src/test/java/org/apache/flink/runtime/memory/MemoryManagerBuilder.java

/*
 * 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.flink.runtime.memory;

import static org.apache.flink.runtime.memory.MemoryManager.DEFAULT_PAGE_SIZE;

/** Builder class for {@link MemoryManager}. */
public class MemoryManagerBuilder {
    private static final long DEFAULT_MEMORY_SIZE = 32L * DEFAULT_PAGE_SIZE;

    private long memorySize = DEFAULT_MEMORY_SIZE;
    private int pageSize = DEFAULT_PAGE_SIZE;

    private MemoryManagerBuilder() {}

    public MemoryManagerBuilder setMemorySize(long memorySize) {
        this.memorySize = memorySize;
        return this;
    }

    public MemoryManagerBuilder setPageSize(int pageSize) {
        this.pageSize = pageSize;
        return this;
    }

    public MemoryManager build() {
        return new MemoryManager(
                memorySize, pageSize, UnsafeMemoryBudgetTest.MAX_SLEEPS_VERIFY_EMPTY_FOR_TESTS);
    }

    public static MemoryManagerBuilder newBuilder() {
        return new MemoryManagerBuilder();
    }
}