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https://issues.apache.org/jira/browse/GEODE-8584?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17216993#comment-17216993
]
ASF GitHub Bot commented on GEODE-8584:
---------------------------------------
Bill commented on a change in pull request #5638:
URL: https://github.com/apache/geode/pull/5638#discussion_r507961548
##########
File path:
geode-core/src/main/java/org/apache/geode/internal/net/ByteBufferSharingImpl.java
##########
@@ -0,0 +1,91 @@
+/*
+ * 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.geode.internal.net;
+
+import java.nio.ByteBuffer;
+import java.util.concurrent.locks.Lock;
+import java.util.concurrent.locks.ReentrantLock;
+
+/**
+ * An {@link AutoCloseable} meant to be acquired in a try-with-resources
statement. The resource (a
+ * {@link ByteBuffer}) is available (for reading and modification) in the
scope of the
+ * try-with-resources. Collaborates with {@link ByteBufferReferencing} to
ensure final dereference
+ * returns the {@link ByteBuffer} to the pool.
+ */
+class ByteBufferSharingImpl implements ByteBufferSharing {
+
+ private final ByteBuffer buffer;
+ private final Lock lock;
+ private final ByteBufferReferencing referencing;
+
+ /**
+ * This constructor is for use only by the owner of the shared resource (a
{@link ByteBuffer}).
+ * Furthermore, this constructor is only for use in constructing the very
first {@link
+ * ByteBufferSharingImpl} for the resource. Subsequent instances must be
constructed via the copy
+ * constructor.
+ *
+ * A resource owner calls this constructor and retains the reference and
never hands it out.
+ * Instead, the owner hands out copies, constructed via the copy constructor.
+ *
+ * This constructor acquires no lock and does not modify the reference count
through the {@link
+ * ByteBufferReferencing} (passed in here.)
+ */
+ ByteBufferSharingImpl(final ByteBuffer buffer,
+ final ByteBufferReferencing referencing) {
+ this(buffer, new ReentrantLock(), referencing);
+ }
+
+ /**
+ * This constructor is for use only by the owner of the shared resource.
It's used for handing out
+ * references to the shared resource. So it does reference counting and also
acquires a lock.
+ *
+ * Resource owners will typically return the result of this constructor, to
a caller. That caller
+ * binds that reference to a variable in a try-with-resources statement and
relies on the
+ * AutoCloseable protocol to invoke close() on the object at the end of the
block.
+ */
+ ByteBufferSharingImpl(final ByteBufferSharingImpl other) {
+ this(other.buffer, other.lock, other.referencing);
+ referencing.addReference();
+ lock.lock();
+ }
+
+ private ByteBufferSharingImpl(final ByteBuffer buffer,
+ final Lock lock,
+ final ByteBufferReferencing referencing) {
+ this.buffer = buffer;
+ this.lock = lock;
+ this.referencing = referencing;
+ }
+
+ @Override
+ public ByteBuffer getBuffer() {
+ return buffer;
+ }
+
+ @Override
+ public void close() {
+ final int usages = referencing.dropReference();
+ if (usages > 0) {
+ /*
+ * We don't unlock when the very last usage goes away. The resource
owner holds the first
+ * usage and there is no lock associated with that one. Subsequent
usages have a lock and
+ * so require a corresponding unlock.
+ */
+ lock.unlock();
Review comment:
Talked to @dschneider-pivotal and we agreed this is not an issue.
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us...@infra.apache.org
> Message transmission fails with IllegalStateException in socket i/o code
> ------------------------------------------------------------------------
>
> Key: GEODE-8584
> URL: https://issues.apache.org/jira/browse/GEODE-8584
> Project: Geode
> Issue Type: Bug
> Components: membership, messaging
> Affects Versions: 1.12.0, 1.13.0, 1.14.0
> Reporter: Bruce J Schuchardt
> Priority: Major
> Labels: pull-request-available
> Fix For: 1.12.1, 1.14.0, 1.13.1
>
>
> Transmission of an update operation failed with a toData exception caused by
> an IllegalStateException in socket i/o code. It shouldn't be possible for
> this exception to happen unless multiple threads are using the buffer at the
> same time.
>
> {noformat}
> org.apache.geode.ToDataException: toData failed on dsfid=71 msg:null
> at
> org.apache.geode.internal.InternalDataSerializer.writeDSFID(InternalDataSerializer.java:1509)
> at
> org.apache.geode.internal.tcp.MsgStreamer.writeMessage(MsgStreamer.java:249)
> at
> org.apache.geode.distributed.internal.direct.DirectChannel.sendToMany(DirectChannel.java:306)
> at
> org.apache.geode.distributed.internal.direct.DirectChannel.sendToOne(DirectChannel.java:182)
> at
> org.apache.geode.distributed.internal.direct.DirectChannel.send(DirectChannel.java:511)
> at
> org.apache.geode.distributed.internal.DistributionImpl.directChannelSend(DistributionImpl.java:346)
> at
> org.apache.geode.distributed.internal.DistributionImpl.send(DistributionImpl.java:291)
> at
> org.apache.geode.distributed.internal.ClusterDistributionManager.sendViaMembershipManager(ClusterDistributionManager.java:2053)
> at
> org.apache.geode.distributed.internal.ClusterDistributionManager.sendOutgoing(ClusterDistributionManager.java:1981)
> at
> org.apache.geode.distributed.internal.ClusterDistributionManager.sendMessage(ClusterDistributionManager.java:2018)
> at
> org.apache.geode.distributed.internal.ClusterDistributionManager.putOutgoing(ClusterDistributionManager.java:1083)
> at
> org.apache.geode.internal.cache.DistributedCacheOperation._distribute(DistributedCacheOperation.java:572)
> at
> org.apache.geode.internal.cache.DistributedCacheOperation.startOperation(DistributedCacheOperation.java:277)
> at
> org.apache.geode.internal.cache.DistributedCacheOperation.distribute(DistributedCacheOperation.java:318)
> at
> org.apache.geode.internal.cache.DistributedRegion.distributeUpdate(DistributedRegion.java:520)
> at
> org.apache.geode.internal.cache.DistributedRegion.basicPutPart3(DistributedRegion.java:498)
> at
> org.apache.geode.internal.cache.map.RegionMapPut.doAfterCompletionActions(RegionMapPut.java:307)
> at
> org.apache.geode.internal.cache.map.AbstractRegionMapPut.doPut(AbstractRegionMapPut.java:185)
> at
> org.apache.geode.internal.cache.map.AbstractRegionMapPut.runWhileLockedForCacheModification(AbstractRegionMapPut.java:119)
> at
> org.apache.geode.internal.cache.map.RegionMapPut.runWhileLockedForCacheModification(RegionMapPut.java:161)
> at
> org.apache.geode.internal.cache.map.AbstractRegionMapPut.put(AbstractRegionMapPut.java:169)
> at
> org.apache.geode.internal.cache.AbstractRegionMap.basicPut(AbstractRegionMap.java:2044)
> at
> org.apache.geode.internal.cache.LocalRegion.virtualPut(LocalRegion.java:5599)
> at
> org.apache.geode.internal.cache.DistributedRegion.virtualPut(DistributedRegion.java:393)
> at
> org.apache.geode.internal.cache.LocalRegion.virtualPut(LocalRegion.java:5577)
> at
> org.apache.geode.internal.cache.LocalRegionDataView.putEntry(LocalRegionDataView.java:157)
> at
> org.apache.geode.internal.cache.LocalRegion.basicPut(LocalRegion.java:5035)
> at
> org.apache.geode.internal.cache.LocalRegion.replaceWithCallbackArgument(LocalRegion.java:10600)
> at
> org.apache.geode.internal.cache.LocalRegion.replace(LocalRegion.java:10566)
> [application code traces deleted]
> Caused by: java.lang.IllegalArgumentException
> at java.nio.Buffer.position(Buffer.java:244)
> at sun.nio.ch.IOUtil.writeFromNativeBuffer(IOUtil.java:96)
> at sun.nio.ch.IOUtil.write(IOUtil.java:51)
> at sun.nio.ch.SocketChannelImpl.write(SocketChannelImpl.java:469)
> at
> org.apache.geode.internal.tcp.Connection.writeFully(Connection.java:2596)
> at
> org.apache.geode.internal.tcp.Connection.sendPreserialized(Connection.java:1866)
> at
> org.apache.geode.internal.tcp.MsgStreamer.realFlush(MsgStreamer.java:330)
> at org.apache.geode.internal.tcp.MsgStreamer.write(MsgStreamer.java:390)
> at
> org.apache.geode.DataSerializer.writeByteArray(DataSerializer.java:1185)
> at
> org.apache.geode.DataSerializer.writeByteArray(DataSerializer.java:1153)
> at
> org.apache.geode.internal.cache.DistributedCacheOperation.writeValue(DistributedCacheOperation.java:137)
> at
> org.apache.geode.internal.cache.UpdateOperation$UpdateMessage.toData(UpdateOperation.java:417)
> at
> org.apache.geode.internal.serialization.internal.DSFIDSerializerImpl.invokeToData(DSFIDSerializerImpl.java:213)
> at
> org.apache.geode.internal.serialization.internal.DSFIDSerializerImpl.write(DSFIDSerializerImpl.java:137)
> at
> org.apache.geode.internal.InternalDataSerializer.writeDSFID(InternalDataSerializer.java:1484)
> ... 37 more {noformat}
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