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Posted to dev@tomcat.apache.org by kk...@apache.org on 2011/10/11 13:30:04 UTC
svn commit: r1181719 - in /tomcat/tc6.0.x/trunk: ./ STATUS.txt
java/org/apache/catalina/core/JreMemoryLeakPreventionListener.java
java/org/apache/catalina/core/LocalStrings.properties
webapps/docs/changelog.xml webapps/docs/config/listeners.xml
Author: kkolinko
Date: Tue Oct 11 11:30:03 2011
New Revision: 1181719
URL: http://svn.apache.org/viewvc?rev=1181719&view=rev
Log:
Fix https://issues.apache.org/bugzilla/show_bug.cgi?id=51862
JreMemoryLeakPreventionListener enhancement to load configurable classes
Modified:
tomcat/tc6.0.x/trunk/ (props changed)
tomcat/tc6.0.x/trunk/STATUS.txt
tomcat/tc6.0.x/trunk/java/org/apache/catalina/core/JreMemoryLeakPreventionListener.java
tomcat/tc6.0.x/trunk/java/org/apache/catalina/core/LocalStrings.properties
tomcat/tc6.0.x/trunk/webapps/docs/changelog.xml
tomcat/tc6.0.x/trunk/webapps/docs/config/listeners.xml
Propchange: tomcat/tc6.0.x/trunk/
------------------------------------------------------------------------------
--- svn:mergeinfo (original)
+++ svn:mergeinfo Tue Oct 11 11:30:03 2011
@@ -1 +1 @@
-/tomcat/trunk:601180,606992,612607,630314,640888,652744,653247,666232,673796,673820,677910,683969,683982,684001,684081,684234,684269-684270,685177,687503,687645,689402,690781,691392,691805,692748,693378,694992,695053,695311,696780,696782,698012,698227,698236,698613,699427,699634,701355,709294,709811,709816,710063,710066,710125,710205,711126,711600,712461,712467,713953,714002,718360,719119,719124,719602,719626,719628,720046,720069,721040,721286,721708,721886,723404,723738,726052,727303,728032,728768,728947,729057,729567,729569,729571,729681,729809,729815,729934,730250,730590,731651,732859,732863,734734,740675,740684,742677,742697,742714,744160,744238,746321,746384,746425,747834,747863,748344,750258,750291,750921,751286-751287,751289,751295,752323,753039,757335,757774,758249,758365,758596,758616,758664,759074,761601,762868,762929,762936-762937,763166,763183,763193,763228,763262,763298,763302,763325,763599,763611,763654,763681,763706,764985,764997,765662,768335,769979,770716,77
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+/tomcat/trunk:601180,606992,612607,630314,640888,652744,653247,666232,673796,673820,677910,683969,683982,684001,684081,684234,684269-684270,685177,687503,687645,689402,690781,691392,691805,692748,693378,694992,695053,695311,696780,696782,698012,698227,698236,698613,699427,699634,701355,709294,709811,709816,710063,710066,710125,710205,711126,711600,712461,712467,713953,714002,718360,719119,719124,719602,719626,719628,720046,720069,721040,721286,721708,721886,723404,723738,726052,727303,728032,728768,728947,729057,729567,729569,729571,729681,729809,729815,729934,730250,730590,731651,732859,732863,734734,740675,740684,742677,742697,742714,744160,744238,746321,746384,746425,747834,747863,748344,750258,750291,750921,751286-751287,751289,751295,752323,753039,757335,757774,758249,758365,758596,758616,758664,759074,761601,762868,762929,762936-762937,763166,763183,763193,763228,763262,763298,763302,763325,763599,763611,763654,763681,763706,764985,764997,765662,768335,769979,770716,77
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,1099586,1099772,1099789,1100145,1100822,1101094,1101144,1124680,1130774,1133014,1137862,1137996,1138950,1138953,1140693,1141104,1141441,1142043,1142904,1143134,1143150,1148216,1148471,1152601,1156519,1164567,1167394,1172233-1172234,1172236,1173614,1174353,1175158,1175190,1177850,1177862,1178228,1178233
Modified: tomcat/tc6.0.x/trunk/STATUS.txt
URL: http://svn.apache.org/viewvc/tomcat/tc6.0.x/trunk/STATUS.txt?rev=1181719&r1=1181718&r2=1181719&view=diff
==============================================================================
--- tomcat/tc6.0.x/trunk/STATUS.txt (original)
+++ tomcat/tc6.0.x/trunk/STATUS.txt Tue Oct 11 11:30:03 2011
@@ -64,15 +64,6 @@ PATCHES PROPOSED TO BACKPORT:
- getStuckThreadIds() returns a list of ids. It might be useful to
have a similar method that returns Thread.getName() names.
-* bug 51862: JreMemoryLeakPreventionListener enhancement to load configurable classes
- https://issues.apache.org/bugzilla/show_bug.cgi?id=51862
- http://svn.apache.org/viewvc?rev=1174359&view=rev
- +1: slaurent, kkolinko, kfujino
- -1:
-
- kkolinko: In trunk it is r1174353. Maybe better to merge from there
- instead of r1174359, for consistency. The code is the same in both.
-
* Add build date and version to documentation pages
Automate copyright end date
It is based on r962466
Modified: tomcat/tc6.0.x/trunk/java/org/apache/catalina/core/JreMemoryLeakPreventionListener.java
URL: http://svn.apache.org/viewvc/tomcat/tc6.0.x/trunk/java/org/apache/catalina/core/JreMemoryLeakPreventionListener.java?rev=1181719&r1=1181718&r2=1181719&view=diff
==============================================================================
--- tomcat/tc6.0.x/trunk/java/org/apache/catalina/core/JreMemoryLeakPreventionListener.java (original)
+++ tomcat/tc6.0.x/trunk/java/org/apache/catalina/core/JreMemoryLeakPreventionListener.java Tue Oct 11 11:30:03 2011
@@ -23,6 +23,7 @@ import java.lang.reflect.Method;
import java.net.MalformedURLException;
import java.net.URL;
import java.net.URLConnection;
+import java.util.StringTokenizer;
import javax.imageio.ImageIO;
import javax.xml.parsers.DocumentBuilderFactory;
@@ -175,6 +176,19 @@ public class JreMemoryLeakPreventionList
this.ldapPoolProtection = ldapPoolProtection;
}
+ /**
+ * List of comma-separated fully qualified class names to load and initialize during
+ * the startup of this Listener. This allows to pre-load classes that are known to
+ * provoke classloader leaks if they are loaded during a request processing.
+ */
+ private String classesToInitialize = null;
+ public String getClassesToInitialize() {
+ return classesToInitialize;
+ }
+ public void setClassesToInitialize(String classesToInitialize) {
+ this.classesToInitialize = classesToInitialize;
+ }
+
public void lifecycleEvent(LifecycleEvent event) {
// Initialise these classes when Tomcat starts
if (Lifecycle.INIT_EVENT.equals(event.getType())) {
@@ -370,6 +384,22 @@ public class JreMemoryLeakPreventionList
}
}
}
+
+ if (classesToInitialize != null) {
+ StringTokenizer strTok =
+ new StringTokenizer(classesToInitialize, ", \r\n\t");
+ while (strTok.hasMoreTokens()) {
+ String classNameToLoad = strTok.nextToken();
+ try {
+ Class.forName(classNameToLoad);
+ } catch (ClassNotFoundException e) {
+ log.error(
+ sm.getString("jreLeakListener.classToInitializeFail",
+ classNameToLoad), e);
+ // continue with next class to load
+ }
+ }
+ }
} finally {
Thread.currentThread().setContextClassLoader(loader);
Modified: tomcat/tc6.0.x/trunk/java/org/apache/catalina/core/LocalStrings.properties
URL: http://svn.apache.org/viewvc/tomcat/tc6.0.x/trunk/java/org/apache/catalina/core/LocalStrings.properties?rev=1181719&r1=1181718&r2=1181719&view=diff
==============================================================================
--- tomcat/tc6.0.x/trunk/java/org/apache/catalina/core/LocalStrings.properties (original)
+++ tomcat/tc6.0.x/trunk/java/org/apache/catalina/core/LocalStrings.properties Tue Oct 11 11:30:03 2011
@@ -66,6 +66,7 @@ jreLeakListener.jarUrlConnCacheFail=Fail
jreLeakListener.xmlParseFail=Error whilst attempting to prevent memory leaks during XML parsing
jreLeakListener.authPolicyFail=Error whilst attempting to prevent memory leak in javax.security.auth.Policy class
jreLeakListener.ldapPoolManagerFail=Failed to trigger creation of the com.sun.jndi.ldap.LdapPoolManager class during Tomcat start to prevent possible memory leaks. This is expected on non-Sun JVMs.
+jreLeakListener.classToInitializeFail=Failed to load class {0} during Tomcat start to prevent possible memory leaks.
naming.wsdlFailed=Failed to find wsdl file: {0}
naming.bindFailed=Failed to bind object: {0}
naming.jmxRegistrationFailed=Failed to register in JMX: {0}
Modified: tomcat/tc6.0.x/trunk/webapps/docs/changelog.xml
URL: http://svn.apache.org/viewvc/tomcat/tc6.0.x/trunk/webapps/docs/changelog.xml?rev=1181719&r1=1181718&r2=1181719&view=diff
==============================================================================
--- tomcat/tc6.0.x/trunk/webapps/docs/changelog.xml (original)
+++ tomcat/tc6.0.x/trunk/webapps/docs/changelog.xml Tue Oct 11 11:30:03 2011
@@ -62,6 +62,11 @@
(kkolinko)
</fix>
<add>
+ <bug>51862</bug>: Added a <code>classesToInitialize</code> attribute to
+ <code>JreMemoryLeakPreventionListener</code> to allow pre-loading of configurable
+ classes to avoid some classloader leaks. (slaurent)
+ </add>
+ <add>
Allow to overwrite the check for distributability
of session attributes by session implementations. (rjung)
</add>
Modified: tomcat/tc6.0.x/trunk/webapps/docs/config/listeners.xml
URL: http://svn.apache.org/viewvc/tomcat/tc6.0.x/trunk/webapps/docs/config/listeners.xml?rev=1181719&r1=1181718&r2=1181719&view=diff
==============================================================================
--- tomcat/tc6.0.x/trunk/webapps/docs/config/listeners.xml (original)
+++ tomcat/tc6.0.x/trunk/webapps/docs/config/listeners.xml Tue Oct 11 11:30:03 2011
@@ -257,6 +257,16 @@ service:jmx:rmi://<hostname>:10002
Defaults to <code>false</code> because an AWT thread is launched.</p>
</attribute>
+ <attribute name="classesToInitialize" required="false">
+ <p>List of comma-separated fully qualified class names to load and initialize
+ during the startup of this Listener. This allows to pre-load classes that are
+ known to provoke classloader leaks if they are loaded during a request
+ processing. Non-JRE classes may be referenced, like
+ <code>oracle.jdbc.driver.OracleTimeoutThreadPerVM</code>.
+ The default value is empty, but specific JRE classes are loaded by other leak
+ protection features managed by other attributes of this Listener.</p>
+ </attribute>
+
<attribute name="gcDaemonProtection" required="false">
<p>Enables protection so that calls to
<code>sun.misc.GC.requestLatency(long)</code> triggered by a web
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