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From kkoli...@apache.org
Subject svn commit: r951930 - in /tomcat/tc6.0.x/trunk: ./ java/org/apache/catalina/core/ java/org/apache/catalina/loader/ webapps/docs/ webapps/docs/config/
Date Sun, 06 Jun 2010 19:17:58 GMT
Author: kkolinko
Date: Sun Jun  6 19:17:58 2010
New Revision: 951930

URL: http://svn.apache.org/viewvc?rev=951930&view=rev
Log:
Fix https://issues.apache.org/bugzilla/show_bug.cgi?id=48971
Make stopping of leaking Timer threads optional and disabled by default.
It is merge of r950164, r950614 from trunk.

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/StandardContext.java
    tomcat/tc6.0.x/trunk/java/org/apache/catalina/loader/WebappClassLoader.java
    tomcat/tc6.0.x/trunk/java/org/apache/catalina/loader/WebappLoader.java
    tomcat/tc6.0.x/trunk/webapps/docs/changelog.xml
    tomcat/tc6.0.x/trunk/webapps/docs/config/context.xml

Propchange: tomcat/tc6.0.x/trunk/
------------------------------------------------------------------------------
--- svn:mergeinfo (original)
+++ svn:mergeinfo Sun Jun  6 19:17:58 2010
@@ -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
 0809,770876,772872,776921,776924,776935,776945,777464,777466,777576,777625,778379,778523-778524,781528,781779,782145,782791,783316,783696,783724,783756,783762,783766,783863,783934,784453,784602,784614,785381,785688,785768,785859,786468,786487,786490,786496,786667,787627,787770,787985,789389,790405,791041,791184,791194,791224,791243,791326,791328,791789,792740,793372,793757,793882,793981,794082,794673,794822,795043,795152,795210,795457,795466,797168,797425,797596,797607,802727,802940,804462,804544,804734,805153,809131,809603,810916,810977,812125,812137,812432,813001,813013,813866,814180,814708,814876,815972,816252,817442,817822,819339,819361,820110,820132,820874,820954,821397,828196,828201,828210,828225,828759,830378-830379,830999,831106,831774,831785,831828,831850,831860,832214,832218,833121,833545,834047,835036,835336,836405,881396,881412,883130,883134,883146,883165,883177,883362,883565,884341,885038,885231,885241,885260,885901,885991,886019,888072,889363,889606,889716,8901
 39,890265,890349-890350,890417,891185-891187,891583,892198,892341,892415,892464,892555,892812,892814,892817,892843,892887,893321,893493,894580,894586,894805,894831,895013,895045,895057,895191,895392,895703,896370,896384,897380-897381,897776,898126,898256,898468,898527,898555,898558,898718,898836,898906,899284,899348,899420,899653,899769-899770,899783,899788,899792,899916,899918-899919,899935,899949,903916,905020,905151,905722,905728,905735,907311,907513,907538,907652,907819,907825,907864,908002,908721,908754,908759,909097,909206,909212,909525,909636,909869,909875,909887,910266,910370,910442,910471,910485,910974,915226,915737,915861,916097,916141,916157,916170,917598,917633,918093,918489,918594,918684,918787,918792,918799,918803,918885,919851,919914,920025,920055,920298,920449,920596,920824,920840,921444,922010,926716,927062,927621,928482,928695,928732,928798,931709,932357,932967,935105,935983,939491,939551,940064,941356,941463,944409,944416,945808,945835,945841,946686,950596
 ,951615
+/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
 0809,770876,772872,776921,776924,776935,776945,777464,777466,777576,777625,778379,778523-778524,781528,781779,782145,782791,783316,783696,783724,783756,783762,783766,783863,783934,784453,784602,784614,785381,785688,785768,785859,786468,786487,786490,786496,786667,787627,787770,787985,789389,790405,791041,791184,791194,791224,791243,791326,791328,791789,792740,793372,793757,793882,793981,794082,794673,794822,795043,795152,795210,795457,795466,797168,797425,797596,797607,802727,802940,804462,804544,804734,805153,809131,809603,810916,810977,812125,812137,812432,813001,813013,813866,814180,814708,814876,815972,816252,817442,817822,819339,819361,820110,820132,820874,820954,821397,828196,828201,828210,828225,828759,830378-830379,830999,831106,831774,831785,831828,831850,831860,832214,832218,833121,833545,834047,835036,835336,836405,881396,881412,883130,883134,883146,883165,883177,883362,883565,884341,885038,885231,885241,885260,885901,885991,886019,888072,889363,889606,889716,8901
 39,890265,890349-890350,890417,891185-891187,891583,892198,892341,892415,892464,892555,892812,892814,892817,892843,892887,893321,893493,894580,894586,894805,894831,895013,895045,895057,895191,895392,895703,896370,896384,897380-897381,897776,898126,898256,898468,898527,898555,898558,898718,898836,898906,899284,899348,899420,899653,899769-899770,899783,899788,899792,899916,899918-899919,899935,899949,903916,905020,905151,905722,905728,905735,907311,907513,907538,907652,907819,907825,907864,908002,908721,908754,908759,909097,909206,909212,909525,909636,909869,909875,909887,910266,910370,910442,910471,910485,910974,915226,915737,915861,916097,916141,916157,916170,917598,917633,918093,918489,918594,918684,918787,918792,918799,918803,918885,919851,919914,920025,920055,920298,920449,920596,920824,920840,921444,922010,926716,927062,927621,928482,928695,928732,928798,931709,932357,932967,935105,935983,939491,939551,940064,941356,941463,944409,944416,945808,945835,945841,946686,950164
 ,950596,950614,951615

Modified: tomcat/tc6.0.x/trunk/STATUS.txt
URL: http://svn.apache.org/viewvc/tomcat/tc6.0.x/trunk/STATUS.txt?rev=951930&r1=951929&r2=951930&view=diff
==============================================================================
--- tomcat/tc6.0.x/trunk/STATUS.txt (original)
+++ tomcat/tc6.0.x/trunk/STATUS.txt Sun Jun  6 19:17:58 2010
@@ -196,14 +196,6 @@ PATCHES PROPOSED TO BACKPORT:
   +1: kfujino, kkolinko
   -1: 
 
-* Fix https://issues.apache.org/bugzilla/show_bug.cgi?id=48971
-  Make stopping of leaking Timer threads optional
-  http://svn.apache.org/viewvc?rev=950164&view=rev
-  +1: markt
-  +1: kkolinko (with r950614)
-  +1: kfujino (with r950614)
-  -1: 
-
 * Fix https://issues.apache.org/bugzilla/show_bug.cgi?id=49099
   Provide a mechanism for including requests rejected by the CoyoteAdapter in
   the standard access log

Modified: tomcat/tc6.0.x/trunk/java/org/apache/catalina/core/StandardContext.java
URL: http://svn.apache.org/viewvc/tomcat/tc6.0.x/trunk/java/org/apache/catalina/core/StandardContext.java?rev=951930&r1=951929&r2=951930&view=diff
==============================================================================
--- tomcat/tc6.0.x/trunk/java/org/apache/catalina/core/StandardContext.java (original)
+++ tomcat/tc6.0.x/trunk/java/org/apache/catalina/core/StandardContext.java Sun Jun  6 19:17:58
2010
@@ -715,9 +715,16 @@ public class StandardContext
      * instability. As such, enabling this should be viewed as an option of last
      * resort in a development environment and is not recommended in a
      * production environment. If not specified, the default value of
-     * <code>false</code> will be used. 
+     * <code>false</code> will be used.
      */
     private boolean clearReferencesStopThreads = false;
+
+    /**
+     * Should Tomcat attempt to terminate any {@link java.util.TimerThread}s
+     * that have been started by the web application? If not specified, the
+     * default value of <code>false</code> will be used.
+     */
+    private boolean clearReferencesStopTimerThreads = false;
     
     /**
      * Should Tomcat attempt to clear any ThreadLocal objects that are instances
@@ -2059,6 +2066,31 @@ public class StandardContext
 
 
     /**
+     * Return the clearReferencesStopTimerThreads flag for this Context.
+     */
+    public boolean getClearReferencesStopTimerThreads() {
+        return (this.clearReferencesStopTimerThreads);
+    }
+
+
+    /**
+     * Set the clearReferencesStopTimerThreads feature for this Context.
+     *
+     * @param clearReferencesStopTimerThreads The new flag value
+     */
+    public void setClearReferencesStopTimerThreads(
+            boolean clearReferencesStopTimerThreads) {
+
+        boolean oldClearReferencesStopTimerThreads =
+            this.clearReferencesStopTimerThreads;
+        this.clearReferencesStopTimerThreads = clearReferencesStopTimerThreads;
+        support.firePropertyChange("clearReferencesStopTimerThreads",
+                                   oldClearReferencesStopTimerThreads,
+                                   this.clearReferencesStopTimerThreads);
+    }
+
+
+    /**
      * Return the clearReferencesThreadLocals flag for this Context.
      */
     public boolean getClearReferencesThreadLocals() {

Modified: tomcat/tc6.0.x/trunk/java/org/apache/catalina/loader/WebappClassLoader.java
URL: http://svn.apache.org/viewvc/tomcat/tc6.0.x/trunk/java/org/apache/catalina/loader/WebappClassLoader.java?rev=951930&r1=951929&r2=951930&view=diff
==============================================================================
--- tomcat/tc6.0.x/trunk/java/org/apache/catalina/loader/WebappClassLoader.java (original)
+++ tomcat/tc6.0.x/trunk/java/org/apache/catalina/loader/WebappClassLoader.java Sun Jun  6
19:17:58 2010
@@ -445,13 +445,18 @@ public class WebappClassLoader
      * instability. As such, enabling this should be viewed as an option of last
      * resort in a development environment and is not recommended in a
      * production environment. If not specified, the default value of
-     * <code>false</code> will be used. Note that instances of
-     * java.util.TimerThread will always be terminate since a safe method exists
-     * to do so.
+     * <code>false</code> will be used.
      */
     private boolean clearReferencesStopThreads = false;
 
     /**
+     * Should Tomcat attempt to terminate any {@link java.util.TimerThread}s
+     * that have been started by the web application? If not specified, the
+     * default value of <code>false</code> will be used.
+     */
+    private boolean clearReferencesStopTimerThreads = false;
+
+    /**
      * Should Tomcat attempt to clear any ThreadLocal objects that are instances
      * of classes loaded by this class loader. Failure to remove any such
      * objects will result in a memory leak on web application stop, undeploy or
@@ -666,6 +671,25 @@ public class WebappClassLoader
 
 
      /**
+      * Return the clearReferencesStopTimerThreads flag for this Context.
+      */
+     public boolean getClearReferencesStopTimerThreads() {
+         return (this.clearReferencesStopTimerThreads);
+     }
+
+
+     /**
+      * Set the clearReferencesStopTimerThreads feature for this Context.
+      *
+      * @param clearReferencesStopTimerThreads The new flag value
+      */
+     public void setClearReferencesStopTimerThreads(
+             boolean clearReferencesStopTimerThreads) {
+         this.clearReferencesStopTimerThreads = clearReferencesStopTimerThreads;
+     }
+
+
+     /**
       * Return the clearReferencesLogFactoryRelease flag for this Context.
       */
      public boolean getClearReferencesLogFactoryRelease() {
@@ -673,6 +697,16 @@ public class WebappClassLoader
      }
 
 
+     /**
+      * Set the clearReferencesLogFactoryRelease feature for this Context.
+      *
+      * @param clearReferencesLogFactoryRelease The new flag value
+      */
+     public void setClearReferencesLogFactoryRelease(
+             boolean clearReferencesLogFactoryRelease) {
+         this.clearReferencesLogFactoryRelease =
+             clearReferencesLogFactoryRelease;
+     }
 
 
      /**
@@ -694,18 +728,6 @@ public class WebappClassLoader
      }
 
 
-     /**
-      * Set the clearReferencesLogFactoryRelease feature for this Context.
-      *
-      * @param clearReferencesLogFactoryRelease The new flag value
-      */
-     public void setClearReferencesLogFactoryRelease(
-             boolean clearReferencesLogFactoryRelease) {
-         this.clearReferencesLogFactoryRelease =
-             clearReferencesLogFactoryRelease;
-     }
-
-
     // ------------------------------------------------------- Reloader Methods
 
 
@@ -2034,9 +2056,10 @@ public class WebappClassLoader
                         continue;
                     }
                    
-                    // TimerThread is not normally visible
+                    // TimerThread can be stopped safely so treat separately
                     if (thread.getClass().getName().equals(
-                            "java.util.TimerThread")) {
+                            "java.util.TimerThread") &&
+                            clearReferencesStopTimerThreads) {
                         clearReferencesStopTimerThread(thread);
                         continue;
                     }

Modified: tomcat/tc6.0.x/trunk/java/org/apache/catalina/loader/WebappLoader.java
URL: http://svn.apache.org/viewvc/tomcat/tc6.0.x/trunk/java/org/apache/catalina/loader/WebappLoader.java?rev=951930&r1=951929&r2=951930&view=diff
==============================================================================
--- tomcat/tc6.0.x/trunk/java/org/apache/catalina/loader/WebappLoader.java (original)
+++ tomcat/tc6.0.x/trunk/java/org/apache/catalina/loader/WebappLoader.java Sun Jun  6 19:17:58
2010
@@ -643,6 +643,8 @@ public class WebappLoader
                         ((StandardContext) container).getAntiJARLocking());
                 classLoader.setClearReferencesStopThreads(
                         ((StandardContext) container).getClearReferencesStopThreads());
+                classLoader.setClearReferencesStopTimerThreads(
+                        ((StandardContext) container).getClearReferencesStopTimerThreads());
                 classLoader.setClearReferencesThreadLocals(
                         ((StandardContext) container).getClearReferencesThreadLocals());
             }

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=951930&r1=951929&r2=951930&view=diff
==============================================================================
--- tomcat/tc6.0.x/trunk/webapps/docs/changelog.xml (original)
+++ tomcat/tc6.0.x/trunk/webapps/docs/changelog.xml Sun Jun  6 19:17:58 2010
@@ -108,6 +108,10 @@
         <bug>48903</bug>: Fix deadlock in webapp class loader. (rjung)
       </fix>
       <fix>
+        <bug>48971</bug>: Make stopping of leaking Timer threads optional and
+        disabled by default. (markt)
+      </fix>
+      <fix>
         <bug>48976</bug>: Document JAVA_ENDORSED_DIRS in start-up scripts. Patch
         provided by Laurent Vaills. (markt)
       </fix>

Modified: tomcat/tc6.0.x/trunk/webapps/docs/config/context.xml
URL: http://svn.apache.org/viewvc/tomcat/tc6.0.x/trunk/webapps/docs/config/context.xml?rev=951930&r1=951929&r2=951930&view=diff
==============================================================================
--- tomcat/tc6.0.x/trunk/webapps/docs/config/context.xml (original)
+++ tomcat/tc6.0.x/trunk/webapps/docs/config/context.xml Sun Jun  6 19:17:58 2010
@@ -343,6 +343,14 @@
         default value of <code>false</code> will be used.</p>
       </attribute>
 
+      <attribute name="clearReferencesStopTimerThreads" required = "false">
+        <p>If <code>true</code>, Tomcat attempts to terminate
+        <code>java.util.Timer</code> threads that have been started by the web
+        application. Unlike standard threads, timer threads can be stopped
+        safely although there may still be side-effects for the application. If
+        not specified, the default value of <code>false</code> will be used.</p>
+      </attribute>
+
       <attribute name="clearReferencesThreadLocals" required="false">
         <p>If <code>true</code>, Tomcat attempts to clear any ThreadLocal
         objects that are instances of classes loaded by this class loader.



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