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Posted to dev@tomcat.apache.org by ma...@apache.org on 2016/05/05 16:32:34 UTC

svn commit: r1742449 - in /tomcat/tc8.5.x/trunk: ./ java/org/apache/catalina/core/JreMemoryLeakPreventionListener.java webapps/docs/changelog.xml webapps/docs/config/listeners.xml

Author: markt
Date: Thu May  5 16:32:34 2016
New Revision: 1742449

URL: http://svn.apache.org/viewvc?rev=1742449&view=rev
Log:
Remove unnecessary code

Modified:
    tomcat/tc8.5.x/trunk/   (props changed)
    tomcat/tc8.5.x/trunk/java/org/apache/catalina/core/JreMemoryLeakPreventionListener.java
    tomcat/tc8.5.x/trunk/webapps/docs/changelog.xml
    tomcat/tc8.5.x/trunk/webapps/docs/config/listeners.xml

Propchange: tomcat/tc8.5.x/trunk/
------------------------------------------------------------------------------
--- svn:mergeinfo (original)
+++ svn:mergeinfo Thu May  5 16:32:34 2016
@@ -1 +1 @@
-/tomcat/trunk:1734785,1734799,1734845,1734928,1735041,1735044,1735480,1735577,1735597,1735599-1735600,1735615,1736145,1736162,1736209,1736280,1736297,1736299,1736489,1736646,1736703,1736836,1736849,1737104-1737105,1737112,1737117,1737119-1737120,1737155,1737157,1737192,1737280,1737339,1737632,1737664,1737715,1737748,1737785,1737834,1737860,1737959,1738005,1738007,1738014-1738015,1738018,1738022,1738039,1738043,1738059-1738060,1738147,1738149,1738174-1738175,1738261,1738589,1738623-1738625,1738643,1738816,1738850,1738855,1738946-1738948,1738953-1738954,1738979,1738982,1739079-1739081,1739087,1739113,1739153,1739172,1739176,1739191,1739474,1739726,1739762,1739775,1739814,1739817-1739818,1739975,1740131,1740324,1740465,1740495,1740508-1740509,1740520,1740535,1740707,1740803,1740810,1740969,1740980,1740991,1740997,1741015,1741033,1741036,1741058,1741060,1741080,1741147,1741159,1741164,1741173,1741181,1741190,1741197,1741202,1741208,1741213,1741221,1741225,1741232,1741409,1741501,1741677
 ,1741892,1741896,1741984,1742023,1742042,1742071,1742090,1742093,1742101,1742105,1742111,1742139,1742146,1742148,1742166,1742181,1742184,1742187,1742246,1742248-1742251,1742263-1742264,1742268,1742276,1742369,1742387
+/tomcat/trunk:1734785,1734799,1734845,1734928,1735041,1735044,1735480,1735577,1735597,1735599-1735600,1735615,1736145,1736162,1736209,1736280,1736297,1736299,1736489,1736646,1736703,1736836,1736849,1737104-1737105,1737112,1737117,1737119-1737120,1737155,1737157,1737192,1737280,1737339,1737632,1737664,1737715,1737748,1737785,1737834,1737860,1737959,1738005,1738007,1738014-1738015,1738018,1738022,1738039,1738043,1738059-1738060,1738147,1738149,1738174-1738175,1738261,1738589,1738623-1738625,1738643,1738816,1738850,1738855,1738946-1738948,1738953-1738954,1738979,1738982,1739079-1739081,1739087,1739113,1739153,1739172,1739176,1739191,1739474,1739726,1739762,1739775,1739814,1739817-1739818,1739975,1740131,1740324,1740465,1740495,1740508-1740509,1740520,1740535,1740707,1740803,1740810,1740969,1740980,1740991,1740997,1741015,1741033,1741036,1741058,1741060,1741080,1741147,1741159,1741164,1741173,1741181,1741190,1741197,1741202,1741208,1741213,1741221,1741225,1741232,1741409,1741501,1741677
 ,1741892,1741896,1741984,1742023,1742042,1742071,1742090,1742093,1742101,1742105,1742111,1742139,1742146,1742148,1742166,1742181,1742184,1742187,1742246,1742248-1742251,1742263-1742264,1742268,1742276,1742369,1742387,1742448

Modified: tomcat/tc8.5.x/trunk/java/org/apache/catalina/core/JreMemoryLeakPreventionListener.java
URL: http://svn.apache.org/viewvc/tomcat/tc8.5.x/trunk/java/org/apache/catalina/core/JreMemoryLeakPreventionListener.java?rev=1742449&r1=1742448&r2=1742449&view=diff
==============================================================================
--- tomcat/tc8.5.x/trunk/java/org/apache/catalina/core/JreMemoryLeakPreventionListener.java (original)
+++ tomcat/tc8.5.x/trunk/java/org/apache/catalina/core/JreMemoryLeakPreventionListener.java Thu May  5 16:32:34 2016
@@ -90,19 +90,6 @@ public class JreMemoryLeakPreventionList
     }
 
     /**
-     * Protect against the memory leak caused when the
-     * <code>sun.java2d.Disposer</code> class is loaded by a web application.
-     * Defaults to <code>false</code> because a new Thread is launched.
-     */
-    private boolean java2dDisposerProtection = false;
-    public boolean isJava2DDisposerProtection() {
-        return java2dDisposerProtection;
-    }
-    public void setJava2DDisposerProtection(boolean java2dDisposerProtection) {
-        this.java2dDisposerProtection = java2dDisposerProtection;
-    }
-
-    /**
      * Protect against the memory leak caused when the first call to
      * <code>sun.misc.GC.requestLatency(long)</code> is triggered by a web
      * application. This first call will start a GC Daemon thread with the
@@ -281,17 +268,6 @@ public class JreMemoryLeakPreventionList
                     java.awt.Toolkit.getDefaultToolkit();
                 }
 
-                // Trigger the creation of the "Java2D Disposer" thread.
-                // See https://bz.apache.org/bugzilla/show_bug.cgi?id=51687
-                if(java2dDisposerProtection) {
-                    try {
-                        Class.forName("sun.java2d.Disposer");
-                    } catch (ClassNotFoundException cnfe) {
-                        // Ignore this case: we must be running on a
-                        // non-Sun-based JRE.
-                    }
-                }
-
                 /*
                  * Several components end up calling
                  * sun.misc.GC.requestLatency(long) which creates a daemon

Modified: tomcat/tc8.5.x/trunk/webapps/docs/changelog.xml
URL: http://svn.apache.org/viewvc/tomcat/tc8.5.x/trunk/webapps/docs/changelog.xml?rev=1742449&r1=1742448&r2=1742449&view=diff
==============================================================================
--- tomcat/tc8.5.x/trunk/webapps/docs/changelog.xml (original)
+++ tomcat/tc8.5.x/trunk/webapps/docs/changelog.xml Thu May  5 16:32:34 2016
@@ -176,6 +176,12 @@
         the contents of <code>WEB-INF/classes</code> as a possible exploded JAR.
         (markt)
       </fix>
+      <scode>
+        Remove the <code>java2DDisposerProtection</code> option from the
+        <code>JreMemoryLeakPreventionListener</code>. The leak is fixed in Java
+        7 onwards and Tomcat 9 requires Java 8 so the option is unnecessary.
+        (markt)
+      </scode>
     </changelog>
   </subsection>
   <subsection name="Coyote">

Modified: tomcat/tc8.5.x/trunk/webapps/docs/config/listeners.xml
URL: http://svn.apache.org/viewvc/tomcat/tc8.5.x/trunk/webapps/docs/config/listeners.xml?rev=1742449&r1=1742448&r2=1742449&view=diff
==============================================================================
--- tomcat/tc8.5.x/trunk/webapps/docs/config/listeners.xml (original)
+++ tomcat/tc8.5.x/trunk/webapps/docs/config/listeners.xml Thu May  5 16:32:34 2016
@@ -222,13 +222,6 @@
         startup on non-Sun JVMs. The default is <code>true</code>.</p>
       </attribute>
 
-      <attribute name="java2DDisposerProtection" required="false">
-        <p>Enables protection so that loading the
-        <code>sun.java2d.Disposer</code> class by a web application does not
-        result in a memory leak.
-        Defaults to <code>false</code> because a thread is launched.</p>
-      </attribute>
-
       <attribute name="ldapPoolProtection" required="false">
         <p>Enables protection so that the PoolCleaner thread started by
         <code>com.sun.jndi.ldap.LdapPoolManager</code> does not result in a



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