| /* |
| * 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.internal.processors.cache.persistence.tree.reuse; |
| |
| import java.util.concurrent.atomic.AtomicLong; |
| import java.util.concurrent.atomic.AtomicReferenceFieldUpdater; |
| import org.apache.ignite.IgniteCheckedException; |
| import org.apache.ignite.internal.GridKernalContext; |
| import org.apache.ignite.internal.metric.IoStatisticsHolderNoOp; |
| import org.apache.ignite.internal.pagemem.PageMemory; |
| import org.apache.ignite.internal.pagemem.wal.IgniteWriteAheadLogManager; |
| import org.apache.ignite.internal.processors.cache.persistence.freelist.PagesList; |
| import org.apache.ignite.internal.processors.cache.persistence.tree.util.PageLockListener; |
| |
| /** |
| * Reuse list. |
| */ |
| public class ReuseListImpl extends PagesList implements ReuseList { |
| /** */ |
| private static final AtomicReferenceFieldUpdater<ReuseListImpl, Stripe[]> bucketUpdater = |
| AtomicReferenceFieldUpdater.newUpdater(ReuseListImpl.class, Stripe[].class, "bucket"); |
| |
| /** */ |
| private volatile Stripe[] bucket; |
| |
| /** Onheap pages cache. */ |
| private final PagesCache bucketCache; |
| |
| /** |
| * @param cacheId Cache ID. |
| * @param name Name (for debug purpose). |
| * @param pageMem Page memory. |
| * @param wal Write ahead log manager. |
| * @param metaPageId Metadata page ID. |
| * @param initNew {@code True} if new metadata should be initialized. |
| * @throws IgniteCheckedException If failed. |
| */ |
| public ReuseListImpl( |
| int cacheId, |
| String name, |
| PageMemory pageMem, |
| IgniteWriteAheadLogManager wal, |
| long metaPageId, |
| boolean initNew, |
| PageLockListener lockLsnr, |
| GridKernalContext ctx, |
| AtomicLong pageListCacheLimit |
| ) throws IgniteCheckedException { |
| super( |
| cacheId, |
| name, |
| pageMem, |
| 1, |
| wal, |
| metaPageId, |
| lockLsnr, |
| ctx |
| ); |
| |
| bucketCache = new PagesCache(pageListCacheLimit); |
| |
| reuseList = this; |
| |
| init(metaPageId, initNew); |
| } |
| |
| /** {@inheritDoc} */ |
| @Override protected boolean isReuseBucket(int bucket) { |
| assert bucket == 0 : bucket; |
| |
| return true; |
| } |
| |
| /** {@inheritDoc} */ |
| @Override public void addForRecycle(ReuseBag bag) throws IgniteCheckedException { |
| put(bag, 0, 0, 0, 0, IoStatisticsHolderNoOp.INSTANCE); |
| } |
| |
| /** {@inheritDoc} */ |
| @Override public long takeRecycledPage() throws IgniteCheckedException { |
| return takeEmptyPage(0, null, IoStatisticsHolderNoOp.INSTANCE); |
| } |
| |
| /** {@inheritDoc} */ |
| @Override public long recycledPagesCount() throws IgniteCheckedException { |
| return storedPagesCount(0); |
| } |
| |
| /** {@inheritDoc} */ |
| @Override protected Stripe[] getBucket(int bucket) { |
| return this.bucket; |
| } |
| |
| /** {@inheritDoc} */ |
| @Override protected int getBucketIndex(int freeSpace) { |
| return 0; |
| } |
| |
| /** {@inheritDoc} */ |
| @Override protected boolean casBucket(int bucket, Stripe[] exp, Stripe[] upd) { |
| return bucketUpdater.compareAndSet(this, exp, upd); |
| } |
| |
| /** {@inheritDoc} */ |
| @Override protected PagesCache getBucketCache(int bucket, boolean create) { |
| return bucketCache; |
| } |
| |
| /** {@inheritDoc} */ |
| @Override public String toString() { |
| return "ReuseList [name=" + name + ']'; |
| } |
| } |