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The following commit(s) were added to refs/heads/main by this push:
new e000150a1a Update thread stopping code for Java 19 changes
e000150a1a is described below
commit e000150a1a4c61cbc25ac158f9cc1681ca7ae468
Author: Mark Thomas <ma...@apache.org>
AuthorDate: Tue May 17 16:43:19 2022 +0100
Update thread stopping code for Java 19 changes
---
.../catalina/loader/WebappClassLoaderBase.java | 42 ++---------
.../org/apache/tomcat/util/compat/Jre19Compat.java | 84 ++++++++++++++++++++++
java/org/apache/tomcat/util/compat/JreCompat.java | 75 ++++++++++++++++++-
.../tomcat/util/compat/LocalStrings.properties | 2 +
webapps/docs/changelog.xml | 8 +++
5 files changed, 175 insertions(+), 36 deletions(-)
diff --git a/java/org/apache/catalina/loader/WebappClassLoaderBase.java
b/java/org/apache/catalina/loader/WebappClassLoaderBase.java
index c8b1ee4507..3376713d6f 100644
--- a/java/org/apache/catalina/loader/WebappClassLoaderBase.java
+++ b/java/org/apache/catalina/loader/WebappClassLoaderBase.java
@@ -1845,41 +1845,13 @@ public abstract class WebappClassLoaderBase extends
URLClassLoader
// shutting down the executor
boolean usingExecutor = false;
try {
-
- // Runnable wrapped by Thread
- // "target" in Sun/Oracle JDK
- // "runnable" in IBM JDK
- // "action" in Apache Harmony
- Object target = null;
- for (String fieldName : new String[] { "target",
"runnable", "action" }) {
- try {
- Field targetField =
thread.getClass().getDeclaredField(fieldName);
- targetField.setAccessible(true);
- target = targetField.get(thread);
- break;
- } catch (NoSuchFieldException nfe) {
- continue;
- }
- }
-
- // "java.util.concurrent" code is in public domain,
- // so all implementations are similar including our
- // internal fork.
- if (target != null &&
target.getClass().getCanonicalName() != null &&
- (target.getClass().getCanonicalName().equals(
-
"org.apache.tomcat.util.threads.ThreadPoolExecutor.Worker") ||
-
target.getClass().getCanonicalName().equals(
-
"java.util.concurrent.ThreadPoolExecutor.Worker"))) {
- Field executorField =
target.getClass().getDeclaredField("this$0");
- executorField.setAccessible(true);
- Object executor = executorField.get(target);
- if (executor instanceof ThreadPoolExecutor) {
- ((ThreadPoolExecutor) executor).shutdownNow();
- usingExecutor = true;
- } else if (executor instanceof
java.util.concurrent.ThreadPoolExecutor) {
- ((java.util.concurrent.ThreadPoolExecutor)
executor).shutdownNow();
- usingExecutor = true;
- }
+ Object executor =
JreCompat.getInstance().getExecutor(thread);
+ if (executor instanceof ThreadPoolExecutor) {
+ ((ThreadPoolExecutor) executor).shutdownNow();
+ usingExecutor = true;
+ } else if (executor instanceof
java.util.concurrent.ThreadPoolExecutor) {
+ ((java.util.concurrent.ThreadPoolExecutor)
executor).shutdownNow();
+ usingExecutor = true;
}
} catch (SecurityException | NoSuchFieldException |
IllegalArgumentException |
IllegalAccessException |
InaccessibleObjectException e) {
diff --git a/java/org/apache/tomcat/util/compat/Jre19Compat.java
b/java/org/apache/tomcat/util/compat/Jre19Compat.java
new file mode 100644
index 0000000000..fb94810b40
--- /dev/null
+++ b/java/org/apache/tomcat/util/compat/Jre19Compat.java
@@ -0,0 +1,84 @@
+/*
+ * 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.tomcat.util.compat;
+
+import java.lang.reflect.Field;
+
+import org.apache.juli.logging.Log;
+import org.apache.juli.logging.LogFactory;
+import org.apache.tomcat.util.res.StringManager;
+
+public class Jre19Compat extends Jre16Compat {
+
+ private static final Log log = LogFactory.getLog(Jre19Compat.class);
+ private static final StringManager sm =
StringManager.getManager(Jre19Compat.class);
+
+ private static final boolean supported;
+
+ static {
+ // Don't need any Java 19 specific classes (yet) so just test for one
of
+ // the new ones for now.
+ Class<?> c1 = null;
+ try {
+ c1 = Class.forName("java.lang.WrongThreadException");
+ } catch (ClassNotFoundException cnfe) {
+ // Must be pre-Java 16
+ log.debug(sm.getString("jre19Compat.javaPre19"), cnfe);
+ }
+
+ supported = (c1 != null);
+ }
+
+ static boolean isSupported() {
+ return supported;
+ }
+
+ @Override
+ public Object getExecutor(Thread thread)
+ throws NoSuchFieldException, SecurityException,
IllegalArgumentException, IllegalAccessException {
+
+ Object result = super.getExecutor(thread);
+
+ if (result == null) {
+ Object holder = null;
+ Object task = null;
+ try {
+ Field holderField =
thread.getClass().getDeclaredField("holder");
+ holderField.setAccessible(true);
+ holder = holderField.get(thread);
+
+ Field taskField = holder.getClass().getDeclaredField("task");
+ taskField.setAccessible(true);
+ task = taskField.get(holder);
+ } catch (NoSuchFieldException nfe) {
+ return null;
+ }
+
+ if (task!= null && task.getClass().getCanonicalName() != null &&
+ (task.getClass().getCanonicalName().equals(
+
"org.apache.tomcat.util.threads.ThreadPoolExecutor.Worker") ||
+ task.getClass().getCanonicalName().equals(
+
"java.util.concurrent.ThreadPoolExecutor.Worker"))) {
+ Field executorField =
task.getClass().getDeclaredField("this$0");
+ executorField.setAccessible(true);
+ result = executorField.get(task);
+ }
+ }
+
+ return result;
+ }
+}
diff --git a/java/org/apache/tomcat/util/compat/JreCompat.java
b/java/org/apache/tomcat/util/compat/JreCompat.java
index e31e0a45cd..3e90bed588 100644
--- a/java/org/apache/tomcat/util/compat/JreCompat.java
+++ b/java/org/apache/tomcat/util/compat/JreCompat.java
@@ -16,6 +16,7 @@
*/
package org.apache.tomcat.util.compat;
+import java.lang.reflect.Field;
import java.net.SocketAddress;
import java.nio.channels.ServerSocketChannel;
import java.nio.channels.SocketChannel;
@@ -32,6 +33,7 @@ public class JreCompat {
private static final JreCompat instance;
private static final boolean graalAvailable;
private static final boolean jre16Available;
+ private static final boolean jre19Available;
private static final StringManager sm =
StringManager.getManager(JreCompat.class);
static {
@@ -48,11 +50,17 @@ public class JreCompat {
// This is Tomcat 10.1.x with a minimum Java version of Java 11.
// Look for the highest supported JVM first
- if (Jre16Compat.isSupported()) {
+ if (Jre19Compat.isSupported()) {
+ instance = new Jre19Compat();
+ jre19Available = true;
+ jre16Available = true;
+ } else if (Jre16Compat.isSupported()) {
instance = new Jre16Compat();
+ jre19Available = false;
jre16Available = true;
} else {
instance = new JreCompat();
+ jre19Available = false;
jre16Available = false;
}
}
@@ -73,6 +81,11 @@ public class JreCompat {
}
+ public static boolean isJre19Available() {
+ return jre19Available;
+ }
+
+
// Java 11 implementations of Java 16 methods
/**
@@ -101,4 +114,64 @@ public class JreCompat {
public SocketChannel openUnixDomainSocketChannel() {
throw new
UnsupportedOperationException(sm.getString("jreCompat.noUnixDomainSocket"));
}
+
+
+ // Java 11 implementations of Java 19 methods
+
+
+ /**
+ * Obtains the executor, if any, used to create the provided thread.
+ *
+ * @param thread The thread to examine
+ *
+ * @return The executor, if any, that created the provided thread
+ *
+ * @throws NoSuchFieldException
+ * If a field used via reflection to obtain the executor
cannot
+ * be found
+ * @throws SecurityException
+ * If a security exception occurs while trying to identify the
+ * executor
+ * @throws IllegalArgumentException
+ * If the instance object does not match the class of the
field
+ * when obtaining a field value via reflection
+ * @throws IllegalAccessException
+ * If a field is not accessible due to access restrictions
+ */
+ public Object getExecutor(Thread thread)
+ throws NoSuchFieldException, SecurityException,
IllegalArgumentException, IllegalAccessException {
+
+ Object result = null;
+
+ // Runnable wrapped by Thread
+ // "target" in Sun/Oracle JDK
+ // "runnable" in IBM JDK
+ // "action" in Apache Harmony
+ Object target = null;
+ for (String fieldName : new String[] { "target", "runnable", "action"
}) {
+ try {
+ Field targetField =
thread.getClass().getDeclaredField(fieldName);
+ targetField.setAccessible(true);
+ target = targetField.get(thread);
+ break;
+ } catch (NoSuchFieldException nfe) {
+ continue;
+ }
+ }
+
+ // "java.util.concurrent" code is in public domain,
+ // so all implementations are similar including our
+ // internal fork.
+ if (target != null && target.getClass().getCanonicalName() != null &&
+ (target.getClass().getCanonicalName().equals(
+
"org.apache.tomcat.util.threads.ThreadPoolExecutor.Worker") ||
+ target.getClass().getCanonicalName().equals(
+
"java.util.concurrent.ThreadPoolExecutor.Worker"))) {
+ Field executorField = target.getClass().getDeclaredField("this$0");
+ executorField.setAccessible(true);
+ result = executorField.get(target);
+ }
+
+ return result;
+ }
}
diff --git a/java/org/apache/tomcat/util/compat/LocalStrings.properties
b/java/org/apache/tomcat/util/compat/LocalStrings.properties
index 9cf1b5c7ad..17f9ce4304 100644
--- a/java/org/apache/tomcat/util/compat/LocalStrings.properties
+++ b/java/org/apache/tomcat/util/compat/LocalStrings.properties
@@ -16,4 +16,6 @@
jre16Compat.javaPre16=Class not found so assuming code is running on a
pre-Java 16 JVM
jre16Compat.unexpected=Failed to create references to Java 16 classes and
methods
+jre19Compat.javaPre19=Class not found so assuming code is running on a
pre-Java 19 JVM
+
jreCompat.noUnixDomainSocket=Java Runtime does not support Unix domain
sockets. You must use Java 16 to use this feature.
diff --git a/webapps/docs/changelog.xml b/webapps/docs/changelog.xml
index 4d0bbac83d..ca1521f30f 100644
--- a/webapps/docs/changelog.xml
+++ b/webapps/docs/changelog.xml
@@ -105,6 +105,14 @@
issues do not "pop up" wrt. others).
-->
<section name="Tomcat 10.1.0-M16 (markt)" rtext="in development">
+ <subsection name="Catalina">
+ <changelog>
+ <fix>
+ Update the memory leak protection code to support stopping application
+ created executor threads when running on Java 19 and later. (markt)
+ </fix>
+ </changelog>
+ </subsection>
<subsection name="Jasper">
<changelog>
<fix>
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