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From ma...@apache.org
Subject svn commit: r1758563 - in /tomcat/tc8.0.x/trunk: ./ java/org/apache/catalina/core/JreMemoryLeakPreventionListener.java webapps/docs/config/listeners.xml
Date Wed, 31 Aug 2016 09:29:41 GMT
Author: markt
Date: Wed Aug 31 09:29:41 2016
New Revision: 1758563

URL: http://svn.apache.org/viewvc?rev=1758563&view=rev
Log:
The latest Java 9 early access builds have fixed some more memory leaks.
Also disable protection that is fixed in Java 8 when running on Java 8

Modified:
    tomcat/tc8.0.x/trunk/   (props changed)
    tomcat/tc8.0.x/trunk/java/org/apache/catalina/core/JreMemoryLeakPreventionListener.java
    tomcat/tc8.0.x/trunk/webapps/docs/config/listeners.xml

Propchange: tomcat/tc8.0.x/trunk/
------------------------------------------------------------------------------
--- svn:mergeinfo (original)
+++ svn:mergeinfo Wed Aug 31 09:29:41 2016
@@ -1,2 +1,2 @@
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 2923,1702971,1702984,1703024,1703040,1703044,1703049-1703050,1703143,1703146,1703151,1703160,1703164,1703167,1703174,1703192,1703287,1703290,1703358,1703408,1703486,1703509,1703523,1703542,1703545,1703554,1703584,1703673,1703676,1703678,1703680,1703763,1703784,1703821,1703842,1703849,1703851,1703853,1703856,1703860,1703865,1703890,1703948,1704149,1704151,1704251,1704278,1704289,1704302,1704305,1704307,1704318,1704331,1704647,1704658,1704689,1704702,1704706,1704711,1704730-1704733,1704735,1704739,1704741-1704742,1704744,1704786,1704867,1705231,1705630,1705635,1705639,1705647,1705650-1705652,1705842,1705848,1705865-1705866,1705942,1706017,1706744-1706745,1706853,1706915,1707052,1707088,1708500-1708501,1708504-1708505,1708570,1708649,1708687,1708745,1708957,1709120,1709266,1709295,1709375,1709663,1709895,1709960,1710070,1710134,1710341,1710346,1710441,1710445,1710489,1710517,1710523,1710571,1710577,1710632,1710676,1710689,1710753-1710754,1710779,1710924,1710930,1710933,1710945,1711006,
 1711016,1711022,1711026,1712163,1712225,1712228,1712233,1712250,1712254,1712489,1712547-1712548,1712588,1712617,1712645,1712654,1712695,1712765-1712766,1712771,1712775,1712859,1712876,1712898,1712902,1712905,1712912,1712974,1713129,1713168,1713184,1713285,1713362,1713397,1713446,1713612,1713618,1713871,1713931,1713975,1713987,1713992,1713997,1714002,1714012,1714019,1714054,1714521,1714535,1714537,1715168,1715188,1715206,1715413,1715415,1715434,1715510-1715512,1715514-1715515,1715517-1715519,1715521,1715633,1715661,1715682,1715965,1716213-1716214,1716258,1716269,1716347,1716354,1716364,1716413,1716420,1716511,1716543,1716640,1716644,1716856,1716858,1716881-1716882,1716886,1716894,1717085,1717225,1717233,1717252,1717264,1717282,1717286,1717290,1717385,1717416,1717418,1717445,1717515,1717520,1717528,1717965,1717967-1717968,1717979,1718022,1718308,1718523,1718794,1718796,1718834,1718836-1718838,1719278,1719291,1719315,1719332,1719334,1719340,1719346,1719441,1719446,1719488,1719909-17199
 10,1720200,1720234,1720394,1720439,1720445,1720448,1720462,1720506,1720652,1720654-1720655,1720711,1720752,1720769,1720776,1720804,1720815,1721303,1721307,1721311,1721314,1721447,1721528,1721539,1721812,1721817,1721830,1721860,1721866,1721881,1721887,1722205,1722292,1722399,1722453,1722455,1722522,1722526,1722532,1722548,1722574,1722583,1722585,1722799,1722807,1722824,1722828-1722829,1722831,1722859,1722902,1722905,1722923,1722939,1722945,1722996,1723068,1723127,1723155,1723250,1723316-1723318,1723368,1723371,1723375,1723377,1723380,1723410,1723414,1723437,1723484,1723486,1723493-1723494,1723500,1723552,1723554,1723683,1723707,1723736,1724012,1724232,1724252,1724325,1724427-1724428,1724433,1724673,1724788,1724863,1724900,1724997,1725113,1725126-1725127,1725150,1725165,1725183,1725199,1725202,1725204,1725207,1725263-1725264,1725266,1725278,1725282,1725405,1725599,1725601,1725635,1725646,1725649-1725652,1725694,1725696-1725697,1725816,1725851,1725906-1725907,1725910,1725914,1725920,17
 25926,1726177,1726202,1726628,1726632,1726637,1726639,1726648,1726651,1726654,1726669,1726676,1726803,1726925-1726926,1726972-1726973,1726991,1727162,1727670,1727675,1727899,1727914,1727917,1728091,1728138,1728433,1728448,1728664,1728677,1729185,1729361,1729625,1729730,1730101-1730102,1730137,1730612,1730946-1730975,1731008,1731055,1731079,1731283,1731856,1731882,1731946-1731958,1731976-1731983,1732359,1732488,1732900-1733448,1733602,1733617-1733963,1733978,1734113,1734128,1734192,1734258,1734301,1734418-1734454,1734466-1734512,1734522,1734592,1734594,1734597,1735041,1735577,1736162,1736209,1736280,1736646,1736836,1737119,1737280,1737339,1737632,1737664,1737715,1737834,1737903,1737959,1738014-1738015,1738018,1738022,1738039,1738043,1738059-1738060,1738147,1738149,1738174-1738175,1738643,1738850,1738982,1738996,1739079-1739081,1739087,1739113,1739153,1739172,1739176,1739474,1739726,1739762,1739775,1739814,1739817-1739818,1739975,1740131,1740324,1740465,1740509,1740520,1740535,1740707
 ,1740803,1740810,1740980,1740991,1741015,1741147,1741173,1741181,1741190,1741202,1741208,1741213,1741221,1741225,1741232,1741409,1741677,1741892,1741896,1742071,1742090,1742093,1742101,1742105,1742111,1742146,1742166,1742181,1742184,1742187,1742246,1742248-1742251,1742263-1742264,1742268,1742276,1742369,1742448,1742919,1742975,1742984,1742986,1743117,1743124-1743125,1743134,1743425,1743554,1743679,1743696-1743697,1743700-1743701,1744058,1744064-1744065,1744125,1744194,1744229,1744270,1744323,1744432,1744684,1744697,1744705,1744760,1745227,1745337,1746306,1746427,1746473,1746620,1746649,1746724,1746939,1746989,1747536,1747924,1748001,1748547,1748629,1748715,1749287,1749328,1749665-1749666,1750015,1750056,1750899,1750975,1750995,1751061,1751097,1752212,1752737,1753078,1753080,1753358,1753363,1754111,1754140-1754141,1754281,1754310,1754445,1754467,1754494,1754496,1754528,1754532-1754533,1754613,1754714,1754874,1754941,1754944,1754950-1754951,1755214,1755224,1755230,1755646-1755647,1755
 650,1755675,1755693,1755717,1755884,1755890,1755918-1755919,1755942,1756013,1756019,1756039,1756408,1756410,1756898,1756939,1757123-1757124,1757126,1757128,1757132-1757133,1757167-1757168,1757175,1757180,1757182,1757195,1757271,1757278,1757347,1757353-1757354,1757363,1757374,1757399,1757406,1757408,1757495,1757499,1757527,1757997,1758072-1758075,1758078-1758079,1758369,1758423,1758425-1758427,1758430,1758486-1758487,1758499,1758556

Modified: tomcat/tc8.0.x/trunk/java/org/apache/catalina/core/JreMemoryLeakPreventionListener.java
URL: http://svn.apache.org/viewvc/tomcat/tc8.0.x/trunk/java/org/apache/catalina/core/JreMemoryLeakPreventionListener.java?rev=1758563&r1=1758562&r2=1758563&view=diff
==============================================================================
--- tomcat/tc8.0.x/trunk/java/org/apache/catalina/core/JreMemoryLeakPreventionListener.java
(original)
+++ tomcat/tc8.0.x/trunk/java/org/apache/catalina/core/JreMemoryLeakPreventionListener.java
Wed Aug 31 09:29:41 2016
@@ -37,6 +37,7 @@ import org.apache.catalina.LifecycleList
 import org.apache.juli.logging.Log;
 import org.apache.juli.logging.LogFactory;
 import org.apache.tomcat.util.ExceptionUtils;
+import org.apache.tomcat.util.compat.JreCompat;
 import org.apache.tomcat.util.compat.JreVendor;
 import org.apache.tomcat.util.res.StringManager;
 import org.w3c.dom.Document;
@@ -258,13 +259,13 @@ public class JreMemoryLeakPreventionList
                 // Trigger a call to sun.awt.AppContext.getAppContext(). This
                 // will pin the system class loader in memory but that shouldn't
                 // be an issue.
-                if (appContextProtection) {
+                if (appContextProtection && !JreCompat.isJre8Available()) {
                     ImageIO.getCacheDirectory();
                 }
 
                 // Trigger the creation of the AWT (AWT-Windows, AWT-XAWT,
                 // etc.) thread
-                if (awtThreadProtection) {
+                if (awtThreadProtection && !JreCompat.isJre9Available()) {
                     java.awt.Toolkit.getDefaultToolkit();
                 }
 
@@ -281,7 +282,7 @@ public class JreMemoryLeakPreventionList
                  *       to terminate
                  *
                  */
-                if (gcDaemonProtection) {
+                if (gcDaemonProtection && !JreCompat.isJre9Available()) {
                     try {
                         Class<?> clazz = Class.forName("sun.misc.GC");
                         Method method = clazz.getDeclaredMethod(
@@ -319,7 +320,7 @@ public class JreMemoryLeakPreventionList
                  * Calling getPolicy retains a static reference to the context
                  * class loader.
                  */
-                if (securityPolicyProtection) {
+                if (securityPolicyProtection && !JreCompat.isJre8Available()) {
                     try {
                         // Policy.getPolicy();
                         Class<?> policyClass = Class
@@ -352,7 +353,7 @@ public class JreMemoryLeakPreventionList
                  * Initializing javax.security.auth.login.Configuration retains a static
reference to the context
                  * class loader.
                  */
-                if (securityLoginConfigurationProtection) {
+                if (securityLoginConfigurationProtection && !JreCompat.isJre8Available())
{
                     try {
                         Class.forName("javax.security.auth.login.Configuration", true, ClassLoader.getSystemClassLoader());
                     } catch(ClassNotFoundException e) {
@@ -367,8 +368,10 @@ public class JreMemoryLeakPreventionList
                  * to the web application class loader.
                  *
                  * Instead we initialize JCA right now.
+                 *
+                 * Fixed in Java 9 onwards (from early access build 133)
                  */
-                if (tokenPollerProtection) {
+                if (tokenPollerProtection && !JreCompat.isJre9Available()) {
                     java.security.Security.getProviders();
                 }
 
@@ -401,7 +404,10 @@ public class JreMemoryLeakPreventionList
                     }
                 }
 
-                if (xmlParsingProtection) {
+                /*
+                 * Fixed in Java 9 onwards (from early access build 133)
+                 */
+                if (xmlParsingProtection && !JreCompat.isJre9Available()) {
                     // There are two known issues with XML parsing that affect
                     // Java 7+. The issues both relate to cached Exception
                     // instances that retain a link to the TCCL via the
@@ -427,7 +433,7 @@ public class JreMemoryLeakPreventionList
                     }
                 }
 
-                if (ldapPoolProtection) {
+                if (ldapPoolProtection && !JreCompat.isJre9Available()) {
                     try {
                         Class.forName("com.sun.jndi.ldap.LdapPoolManager");
                     } catch (ClassNotFoundException e) {

Modified: tomcat/tc8.0.x/trunk/webapps/docs/config/listeners.xml
URL: http://svn.apache.org/viewvc/tomcat/tc8.0.x/trunk/webapps/docs/config/listeners.xml?rev=1758563&r1=1758562&r2=1758563&view=diff
==============================================================================
--- tomcat/tc8.0.x/trunk/webapps/docs/config/listeners.xml (original)
+++ tomcat/tc8.0.x/trunk/webapps/docs/config/listeners.xml Wed Aug 31 09:29:41 2016
@@ -170,6 +170,8 @@
         application do not result in a memory leak. Note that enabling this
         protection will trigger a requirement for a graphical environment unless
         Java is started in head-less mode. The default is <code>false</code>.
+        This protection is disabled if running on Java 8 onwards since the leak
+        has been fixed for Java 8 onwards.
         </p>
       </attribute>
 
@@ -177,7 +179,9 @@
         <p>Enables protection so that calls to
         <code>java.awt.Toolkit.getDefaultToolkit()</code> triggered by a web
         application do not result in a memory leak.
-        Defaults to <code>false</code> because an AWT thread is launched.</p>
+        Defaults to <code>false</code> because an AWT thread is launched. This
+        protection is disabled if running on Java 9 onwards since the leak has
+        been fixed for Java 9 onwards.</p>
       </attribute>
 
       <attribute name="classesToInitialize" required="false">
@@ -205,7 +209,9 @@
         trigger a call to this method. A side effect of enabling this protection
         is the creation of a thread named "GC Daemon". The protection uses
         reflection to access internal Sun classes and may generate errors on
-        startup on non-Sun JVMs. The default is <code>true</code>.</p>
+        startup on non-Sun JVMs. The default is <code>true</code>. This
+        protection is disabled if running on Java 9 onwards since the leak has
+        been fixed for Java 9 onwards.</p>
       </attribute>
 
       <attribute name="ldapPoolProtection" required="false">
@@ -218,7 +224,8 @@
         class the PoolCleaner thread will be configured with the thread's
         context class loader set to the web application class loader which in
         turn will trigger a memory leak on reload. Defaults to
-        <code>true</code>.</p>
+        <code>true</code>. This protection is disabled if running on Java 9 
+        onwards since the leak has been fixed for Java 9 onwards.</p>
       </attribute>
 
       <attribute name="securityLoginConfigurationProtection" required="false">
@@ -228,7 +235,9 @@
         class will trigger the initializer that will retain a static reference
         to the context class loader. The protection loads the class with the
         system class loader to ensure that the static initializer is not
-        triggered by a web application. Defaults to <code>true</code>.</p>
+        triggered by a web application. Defaults to <code>true</code>. This
+        protection is disabled if running on Java 8 onwards since the leak has
+        been fixed for Java 8 onwards.</p>
       </attribute>
 
       <attribute name="securityPolicyProtection" required="false">
@@ -240,8 +249,8 @@
         of this class to ensure that the static initializer is not triggered by
         a web application. Defaults to <code>true</code>.</p>
         <p>Note: The underlying leak has been fixed in Java 7 update 51 onwards
-        and Java 8 onwards. This option is unnecessary if running on a fixed
-        version of Java.</p>
+        and Java 8 onwards. This protection is therefor disabled if running on
+        Java 8 onwards.</p>
       </attribute>
 
       <attribute name="tokenPollerProtection" required="false">
@@ -253,7 +262,9 @@
         deployment when the MessageDigest for generating session IDs is
         initialized. As a result the thread has the Webapp class loader as its
         thread context class loader. Enabling the protection initializes JCA
-        early during Tomcat startup. Defaults to <code>true</code>.</p>
+        early during Tomcat startup. Defaults to <code>true</code>. This
+        protection is disabled if running on Java 9 onwards since the leak has
+        been fixed for Java 9 onwards.</p>
       </attribute>
 
       <attribute name="urlCacheProtection" required="false">
@@ -269,7 +280,9 @@
         <p>Enables protection so that parsing XML files within a web application
         does not result in a memory leak. Note that memory profilers may not
         display the GC root associated with this leak making it particularly
-        hard to diagnose. Defaults to <code>true</code>.</p>
+        hard to diagnose. Defaults to <code>true</code>. This protection is
+        disabled if running on Java 9 onwards since the leak has been fixed for
+        Java 9 onwards.</p>
       </attribute>
 
     </attributes>



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