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Posted to dev@xalan.apache.org by "Helge Schulz (JIRA)" <xa...@xml.apache.org> on 2008/03/24 12:43:25 UTC
[jira] Created: (XALANJ-2439) [PATCH] XSLTC resource leak causes
'No more DTM IDs are available' error
[PATCH] XSLTC resource leak causes 'No more DTM IDs are available' error
------------------------------------------------------------------------
Key: XALANJ-2439
URL: https://issues.apache.org/jira/browse/XALANJ-2439
Project: XalanJ2
Issue Type: Bug
Components: XSLTC
Affects Versions: The Latest Development Code
Environment: Linux and Windows XP with Sun JRE 1.5.0_15 and 1.6.0_05
Reporter: Helge Schulz
Priority: Minor
Fix For: The Latest Development Code
The Xalan XSLT compiler (XSLTC) has several resource leaks in handling
result tree fragments in XSLT variables and parameters. If a variable
or parameter declaration contains XML elements, a new DOM tree is created
and a new internal integer id is reserved for it. The garbage collector can
never retrieve this DOM tree, because the id registration holds a reference
to it. This bug prevents the transformation of large input files, because
complex templates creates many result tree fragments and exceeds often the
absolute limit of possible DOM trees in XSLTC (2^16 = 65535). If this
limit is reached, XSLTC throws the following exception:
DTMException: No more DTM IDs are available
The attached patch adds a new release method to the DOM interface and calls
it, when the scope of a variable or parameter is leaved.
You can test this patch with the attached JAR file. This file can be
called with
java -Xmx800M -jar DOMLeak-XSLT-Test-X.Y.jar
This file contains four test style sheets with expected output files.
This bug exists also in *all* Sun JRE 1.5 and 1.6 versions, because the
Xalan XSLTC source code is used in the 'com.sun.org.apache.xalan.internal'
packages. The attached test JAR file contains also a patch for the current
Sun JRE version 1.6.0_5 and a fix JAR file to be installed into the
'../jre/lib/endorsed' directory of the JRE installation.
Please add the attached test files to the Xalan test suite. I have
released them under Apache license version 2.0.
Helge Schulz - http://OpenSHORE.org
----------
Here is the output of running my test cases with several Java version:
test:
apply-with-all-versions:
[apply] Buildfile: build.xml
[apply] test-java:
[apply] [echo] Test Sun Java 1.4.2_17 with integrated XSLT
[apply] [java] Testing DOMLeak-1-ResultTreeInVariable.xsl... Ok.
[apply] [java] Testing DOMLeak-2-ResultTreeInCallParameter.xsl... Ok.
[apply] [java] Testing DOMLeak-3-ResultTreeInApplyParameter.xsl... Ok.
[apply] [java] Testing DOMLeak-4-NodeSetAndMultiDOM.xsl... Ok.
[apply] [echo]
[apply] [echo] Test Sun Java 1.4.2_17 with latest Xalan (SVN revision 584164)
[apply] [java] Testing DOMLeak-1-ResultTreeInVariable.xsl... ERROR: 'No more DTM IDs are available'
[apply] [java] XSLT Exception: org.apache.xml.dtm.DTMException: No more DTM IDs are available
[apply] [java] Testing DOMLeak-2-ResultTreeInCallParameter.xsl... ERROR: 'No more DTM IDs are available'
[apply] [java] XSLT Exception: org.apache.xml.dtm.DTMException: No more DTM IDs are available
[apply] [java] Testing DOMLeak-3-ResultTreeInApplyParameter.xsl... ERROR: 'No more DTM IDs are available'
[apply] [java] XSLT Exception: org.apache.xml.dtm.DTMException: No more DTM IDs are available
[apply] [java] Testing DOMLeak-4-NodeSetAndMultiDOM.xsl... ERROR: 'No more DTM IDs are available'
[apply] [java] XSLT Exception: org.apache.xml.dtm.DTMException: No more DTM IDs are available
[apply] [echo]
[apply] [echo] Test Sun Java 1.4.2_17 with fixed Xalan
[apply] [java] Testing DOMLeak-1-ResultTreeInVariable.xsl... Ok.
[apply] [java] Testing DOMLeak-2-ResultTreeInCallParameter.xsl... Ok.
[apply] [java] Testing DOMLeak-3-ResultTreeInApplyParameter.xsl... Ok.
[apply] [java] Testing DOMLeak-4-NodeSetAndMultiDOM.xsl... Ok.
[apply] BUILD SUCCESSFUL
[apply] Total time: 1 minute 21 seconds
[apply] Buildfile: build.xml
[apply] test-java:
[apply] [echo] Test Sun Java 1.5.0_15 with integrated XSLT
[apply] [java] Testing DOMLeak-1-ResultTreeInVariable.xsl... ERROR: 'No more DTM IDs are available'
[apply] [java] XSLT Exception: com.sun.org.apache.xml.internal.dtm.DTMException: No more DTM IDs are available
[apply] [java] Testing DOMLeak-2-ResultTreeInCallParameter.xsl... ERROR: 'No more DTM IDs are available'
[apply] [java] XSLT Exception: com.sun.org.apache.xml.internal.dtm.DTMException: No more DTM IDs are available
[apply] [java] Testing DOMLeak-3-ResultTreeInApplyParameter.xsl... ERROR: 'No more DTM IDs are available'
[apply] [java] XSLT Exception: com.sun.org.apache.xml.internal.dtm.DTMException: No more DTM IDs are available
[apply] [java] Testing DOMLeak-4-NodeSetAndMultiDOM.xsl... ERROR: 'No more DTM IDs are available'
[apply] [java] XSLT Exception: com.sun.org.apache.xml.internal.dtm.DTMException: No more DTM IDs are available
[apply] [echo]
[apply] [echo] Test Sun Java 1.5.0_15 with latest Xalan (SVN revision 584164)
[apply] [java] Testing DOMLeak-1-ResultTreeInVariable.xsl... ERROR: 'No more DTM IDs are available'
[apply] [java] XSLT Exception: org.apache.xml.dtm.DTMException: No more DTM IDs are available
[apply] [java] Testing DOMLeak-2-ResultTreeInCallParameter.xsl... ERROR: 'No more DTM IDs are available'
[apply] [java] XSLT Exception: org.apache.xml.dtm.DTMException: No more DTM IDs are available
[apply] [java] Testing DOMLeak-3-ResultTreeInApplyParameter.xsl... ERROR: 'No more DTM IDs are available'
[apply] [java] XSLT Exception: org.apache.xml.dtm.DTMException: No more DTM IDs are available
[apply] [java] Testing DOMLeak-4-NodeSetAndMultiDOM.xsl... ERROR: 'No more DTM IDs are available'
[apply] [java] XSLT Exception: org.apache.xml.dtm.DTMException: No more DTM IDs are available
[apply] [echo]
[apply] [echo] Test Sun Java 1.5.0_15 with fixed Xalan
[apply] [java] Testing DOMLeak-1-ResultTreeInVariable.xsl... Ok.
[apply] [java] Testing DOMLeak-2-ResultTreeInCallParameter.xsl... Ok.
[apply] [java] Testing DOMLeak-3-ResultTreeInApplyParameter.xsl... Ok.
[apply] [java] Testing DOMLeak-4-NodeSetAndMultiDOM.xsl... Ok.
[apply] BUILD SUCCESSFUL
[apply] Total time: 2 minutes 13 seconds
[apply] Buildfile: build.xml
[apply] test-java:
[apply] [echo] Test Sun Java 1.6.0_05 with integrated XSLT
[apply] [java] Testing DOMLeak-1-ResultTreeInVariable.xsl... ERROR: 'No more DTM IDs are available'
[apply] [java] XSLT Exception: com.sun.org.apache.xml.internal.dtm.DTMException: No more DTM IDs are available
[apply] [java] Testing DOMLeak-2-ResultTreeInCallParameter.xsl... ERROR: 'No more DTM IDs are available'
[apply] [java] XSLT Exception: com.sun.org.apache.xml.internal.dtm.DTMException: No more DTM IDs are available
[apply] [java] Testing DOMLeak-3-ResultTreeInApplyParameter.xsl... ERROR: 'No more DTM IDs are available'
[apply] [java] XSLT Exception: com.sun.org.apache.xml.internal.dtm.DTMException: No more DTM IDs are available
[apply] [java] Testing DOMLeak-4-NodeSetAndMultiDOM.xsl... ERROR: 'No more DTM IDs are available'
[apply] [java] XSLT Exception: com.sun.org.apache.xml.internal.dtm.DTMException: No more DTM IDs are available
[apply] [echo]
[apply] [echo] Test Sun Java 1.6.0_05 with latest Xalan (SVN revision 584164)
[apply] [java] Testing DOMLeak-1-ResultTreeInVariable.xsl... ERROR: 'No more DTM IDs are available'
[apply] [java] XSLT Exception: org.apache.xml.dtm.DTMException: No more DTM IDs are available
[apply] [java] Testing DOMLeak-2-ResultTreeInCallParameter.xsl... ERROR: 'No more DTM IDs are available'
[apply] [java] XSLT Exception: org.apache.xml.dtm.DTMException: No more DTM IDs are available
[apply] [java] Testing DOMLeak-3-ResultTreeInApplyParameter.xsl... ERROR: 'No more DTM IDs are available'
[apply] [java] XSLT Exception: org.apache.xml.dtm.DTMException: No more DTM IDs are available
[apply] [java] Testing DOMLeak-4-NodeSetAndMultiDOM.xsl... ERROR: 'No more DTM IDs are available'
[apply] [java] XSLT Exception: org.apache.xml.dtm.DTMException: No more DTM IDs are available
[apply] [echo]
[apply] [echo] Test Sun Java 1.6.0_05 with fixed Xalan
[apply] [java] Testing DOMLeak-1-ResultTreeInVariable.xsl... Ok.
[apply] [java] Testing DOMLeak-2-ResultTreeInCallParameter.xsl... Ok.
[apply] [java] Testing DOMLeak-3-ResultTreeInApplyParameter.xsl... Ok.
[apply] [java] Testing DOMLeak-4-NodeSetAndMultiDOM.xsl... Ok.
[apply] BUILD SUCCESSFUL
[apply] Total time: 1 minute 42 seconds
BUILD SUCCESSFUL
Total time: 5 minutes 22 seconds
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[jira] Commented: (XALANJ-2439) [PATCH] XSLTC resource leak causes
'No more DTM IDs are available' error
Posted by "Helge Schulz (JIRA)" <xa...@xml.apache.org>.
[ https://issues.apache.org/jira/browse/XALANJ-2439?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12806823#action_12806823 ]
Helge Schulz commented on XALANJ-2439:
--------------------------------------
On 2009-07-28 Martin von Gagern wrote:
>
> When do you release "temporary" result trees?
Temporary result trees in variables are released after leaving the enclosing element. That in parameters are released after a template call.
> Are you sure that there is no way a reference to such a temporary node may still be referenced somewhere at that time?
> Have you considered variables and parameters?
> Functions transforming nodesets into other nodesets?
> Could keys or some similar construct get a hand on such temporary nodes and store them longer than expected?
> Will generated nodes included in the output be available for all output formats, especially both SAX and DOM?
DOM nodes are always only in one document tree at a time. They must be always copied by method 'cloneNode', if they are copied into the result tree. So it is safe to release the temporary document trees.
Helge Schulz - http://OpenSHORE.org
> [PATCH] XSLTC resource leak causes 'No more DTM IDs are available' error
> ------------------------------------------------------------------------
>
> Key: XALANJ-2439
> URL: https://issues.apache.org/jira/browse/XALANJ-2439
> Project: XalanJ2
> Issue Type: Bug
> Components: XSLTC
> Affects Versions: The Latest Development Code
> Environment: Linux and Windows XP with Sun JRE 1.5.0_15 and 1.6.0_05
> Reporter: Helge Schulz
> Priority: Minor
> Fix For: The Latest Development Code
>
> Attachments: DOMLeak-4-NodeSetAndMultiDOM.xsl, DOMLeak-Xalan-SVN-r584164.patch, DOMLeak-XSLT-Test-1.0.jar
>
> Original Estimate: 4h
> Remaining Estimate: 4h
>
> The Xalan XSLT compiler (XSLTC) has several resource leaks in handling
> result tree fragments in XSLT variables and parameters. If a variable
> or parameter declaration contains XML elements, a new DOM tree is created
> and a new internal integer id is reserved for it. The garbage collector can
> never retrieve this DOM tree, because the id registration holds a reference
> to it. This bug prevents the transformation of large input files, because
> complex templates creates many result tree fragments and exceeds often the
> absolute limit of possible DOM trees in XSLTC (2^16 = 65535). If this
> limit is reached, XSLTC throws the following exception:
> DTMException: No more DTM IDs are available
> The attached patch adds a new release method to the DOM interface and calls
> it, when the scope of a variable or parameter is leaved.
> You can test this patch with the attached JAR file. This file can be
> called with
> java -Xmx800M -jar DOMLeak-XSLT-Test-X.Y.jar
> This file contains four test style sheets with expected output files.
> This bug exists also in *all* Sun JRE 1.5 and 1.6 versions, because the
> Xalan XSLTC source code is used in the 'com.sun.org.apache.xalan.internal'
> packages. The attached test JAR file contains also a patch for the current
> Sun JRE version 1.6.0_5 and a fix JAR file to be installed into the
> '../jre/lib/endorsed' directory of the JRE installation.
> Please add the attached test files to the Xalan test suite. I have
> released them under Apache license version 2.0.
> Helge Schulz - http://OpenSHORE.org
> ----------
> Here is the output of running my test cases with several Java version:
> test:
> apply-with-all-versions:
> [apply] Buildfile: build.xml
> [apply] test-java:
> [apply] [echo] Test Sun Java 1.4.2_17 with integrated XSLT
> [apply] [java] Testing DOMLeak-1-ResultTreeInVariable.xsl... Ok.
> [apply] [java] Testing DOMLeak-2-ResultTreeInCallParameter.xsl... Ok.
> [apply] [java] Testing DOMLeak-3-ResultTreeInApplyParameter.xsl... Ok.
> [apply] [java] Testing DOMLeak-4-NodeSetAndMultiDOM.xsl... Ok.
> [apply] [echo]
> [apply] [echo] Test Sun Java 1.4.2_17 with latest Xalan (SVN revision 584164)
> [apply] [java] Testing DOMLeak-1-ResultTreeInVariable.xsl... ERROR: 'No more DTM IDs are available'
> [apply] [java] XSLT Exception: org.apache.xml.dtm.DTMException: No more DTM IDs are available
> [apply] [java] Testing DOMLeak-2-ResultTreeInCallParameter.xsl... ERROR: 'No more DTM IDs are available'
> [apply] [java] XSLT Exception: org.apache.xml.dtm.DTMException: No more DTM IDs are available
> [apply] [java] Testing DOMLeak-3-ResultTreeInApplyParameter.xsl... ERROR: 'No more DTM IDs are available'
> [apply] [java] XSLT Exception: org.apache.xml.dtm.DTMException: No more DTM IDs are available
> [apply] [java] Testing DOMLeak-4-NodeSetAndMultiDOM.xsl... ERROR: 'No more DTM IDs are available'
> [apply] [java] XSLT Exception: org.apache.xml.dtm.DTMException: No more DTM IDs are available
> [apply] [echo]
> [apply] [echo] Test Sun Java 1.4.2_17 with fixed Xalan
> [apply] [java] Testing DOMLeak-1-ResultTreeInVariable.xsl... Ok.
> [apply] [java] Testing DOMLeak-2-ResultTreeInCallParameter.xsl... Ok.
> [apply] [java] Testing DOMLeak-3-ResultTreeInApplyParameter.xsl... Ok.
> [apply] [java] Testing DOMLeak-4-NodeSetAndMultiDOM.xsl... Ok.
> [apply] BUILD SUCCESSFUL
> [apply] Total time: 1 minute 21 seconds
> [apply] Buildfile: build.xml
> [apply] test-java:
> [apply] [echo] Test Sun Java 1.5.0_15 with integrated XSLT
> [apply] [java] Testing DOMLeak-1-ResultTreeInVariable.xsl... ERROR: 'No more DTM IDs are available'
> [apply] [java] XSLT Exception: com.sun.org.apache.xml.internal.dtm.DTMException: No more DTM IDs are available
> [apply] [java] Testing DOMLeak-2-ResultTreeInCallParameter.xsl... ERROR: 'No more DTM IDs are available'
> [apply] [java] XSLT Exception: com.sun.org.apache.xml.internal.dtm.DTMException: No more DTM IDs are available
> [apply] [java] Testing DOMLeak-3-ResultTreeInApplyParameter.xsl... ERROR: 'No more DTM IDs are available'
> [apply] [java] XSLT Exception: com.sun.org.apache.xml.internal.dtm.DTMException: No more DTM IDs are available
> [apply] [java] Testing DOMLeak-4-NodeSetAndMultiDOM.xsl... ERROR: 'No more DTM IDs are available'
> [apply] [java] XSLT Exception: com.sun.org.apache.xml.internal.dtm.DTMException: No more DTM IDs are available
> [apply] [echo]
> [apply] [echo] Test Sun Java 1.5.0_15 with latest Xalan (SVN revision 584164)
> [apply] [java] Testing DOMLeak-1-ResultTreeInVariable.xsl... ERROR: 'No more DTM IDs are available'
> [apply] [java] XSLT Exception: org.apache.xml.dtm.DTMException: No more DTM IDs are available
> [apply] [java] Testing DOMLeak-2-ResultTreeInCallParameter.xsl... ERROR: 'No more DTM IDs are available'
> [apply] [java] XSLT Exception: org.apache.xml.dtm.DTMException: No more DTM IDs are available
> [apply] [java] Testing DOMLeak-3-ResultTreeInApplyParameter.xsl... ERROR: 'No more DTM IDs are available'
> [apply] [java] XSLT Exception: org.apache.xml.dtm.DTMException: No more DTM IDs are available
> [apply] [java] Testing DOMLeak-4-NodeSetAndMultiDOM.xsl... ERROR: 'No more DTM IDs are available'
> [apply] [java] XSLT Exception: org.apache.xml.dtm.DTMException: No more DTM IDs are available
> [apply] [echo]
> [apply] [echo] Test Sun Java 1.5.0_15 with fixed Xalan
> [apply] [java] Testing DOMLeak-1-ResultTreeInVariable.xsl... Ok.
> [apply] [java] Testing DOMLeak-2-ResultTreeInCallParameter.xsl... Ok.
> [apply] [java] Testing DOMLeak-3-ResultTreeInApplyParameter.xsl... Ok.
> [apply] [java] Testing DOMLeak-4-NodeSetAndMultiDOM.xsl... Ok.
> [apply] BUILD SUCCESSFUL
> [apply] Total time: 2 minutes 13 seconds
> [apply] Buildfile: build.xml
> [apply] test-java:
> [apply] [echo] Test Sun Java 1.6.0_05 with integrated XSLT
> [apply] [java] Testing DOMLeak-1-ResultTreeInVariable.xsl... ERROR: 'No more DTM IDs are available'
> [apply] [java] XSLT Exception: com.sun.org.apache.xml.internal.dtm.DTMException: No more DTM IDs are available
> [apply] [java] Testing DOMLeak-2-ResultTreeInCallParameter.xsl... ERROR: 'No more DTM IDs are available'
> [apply] [java] XSLT Exception: com.sun.org.apache.xml.internal.dtm.DTMException: No more DTM IDs are available
> [apply] [java] Testing DOMLeak-3-ResultTreeInApplyParameter.xsl... ERROR: 'No more DTM IDs are available'
> [apply] [java] XSLT Exception: com.sun.org.apache.xml.internal.dtm.DTMException: No more DTM IDs are available
> [apply] [java] Testing DOMLeak-4-NodeSetAndMultiDOM.xsl... ERROR: 'No more DTM IDs are available'
> [apply] [java] XSLT Exception: com.sun.org.apache.xml.internal.dtm.DTMException: No more DTM IDs are available
> [apply] [echo]
> [apply] [echo] Test Sun Java 1.6.0_05 with latest Xalan (SVN revision 584164)
> [apply] [java] Testing DOMLeak-1-ResultTreeInVariable.xsl... ERROR: 'No more DTM IDs are available'
> [apply] [java] XSLT Exception: org.apache.xml.dtm.DTMException: No more DTM IDs are available
> [apply] [java] Testing DOMLeak-2-ResultTreeInCallParameter.xsl... ERROR: 'No more DTM IDs are available'
> [apply] [java] XSLT Exception: org.apache.xml.dtm.DTMException: No more DTM IDs are available
> [apply] [java] Testing DOMLeak-3-ResultTreeInApplyParameter.xsl... ERROR: 'No more DTM IDs are available'
> [apply] [java] XSLT Exception: org.apache.xml.dtm.DTMException: No more DTM IDs are available
> [apply] [java] Testing DOMLeak-4-NodeSetAndMultiDOM.xsl... ERROR: 'No more DTM IDs are available'
> [apply] [java] XSLT Exception: org.apache.xml.dtm.DTMException: No more DTM IDs are available
> [apply] [echo]
> [apply] [echo] Test Sun Java 1.6.0_05 with fixed Xalan
> [apply] [java] Testing DOMLeak-1-ResultTreeInVariable.xsl... Ok.
> [apply] [java] Testing DOMLeak-2-ResultTreeInCallParameter.xsl... Ok.
> [apply] [java] Testing DOMLeak-3-ResultTreeInApplyParameter.xsl... Ok.
> [apply] [java] Testing DOMLeak-4-NodeSetAndMultiDOM.xsl... Ok.
> [apply] BUILD SUCCESSFUL
> [apply] Total time: 1 minute 42 seconds
> BUILD SUCCESSFUL
> Total time: 5 minutes 22 seconds
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[jira] Commented: (XALANJ-2439) [PATCH] XSLTC resource leak causes
'No more DTM IDs are available' error
Posted by "Helge Schulz (JIRA)" <xa...@xml.apache.org>.
[ https://issues.apache.org/jira/browse/XALANJ-2439?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12581515#action_12581515 ]
Helge Schulz commented on XALANJ-2439:
--------------------------------------
Here is my patch:
Index: org/apache/xalan/xsltc/dom/SAXImpl.java
===================================================================
--- org/apache/xalan/xsltc/dom/SAXImpl.java (revision 640381)
+++ org/apache/xalan/xsltc/dom/SAXImpl.java (working copy)
@@ -1836,6 +1836,11 @@
initSize, m_buildIdIndex);
}
}
+
+ public void release()
+ {
+ _dtmManager.release(this, true);
+ }
/**
* %HZ% Need Javadoc
Index: org/apache/xalan/xsltc/dom/DOMAdapter.java
===================================================================
--- org/apache/xalan/xsltc/dom/DOMAdapter.java (revision 640381)
+++ org/apache/xalan/xsltc/dom/DOMAdapter.java (working copy)
@@ -463,4 +463,9 @@
public Hashtable getElementsWithIDs() {
return _dom.getElementsWithIDs();
}
+
+ public void release() {
+ _dom.release();
+ }
+
}
Index: org/apache/xalan/xsltc/dom/SimpleResultTreeImpl.java
===================================================================
--- org/apache/xalan/xsltc/dom/SimpleResultTreeImpl.java (revision 640381)
+++ org/apache/xalan/xsltc/dom/SimpleResultTreeImpl.java (working copy)
@@ -1015,4 +1015,13 @@
public void migrateTo(DTMManager manager)
{
}
+
+ public void release()
+ {
+ if (_documentID != 0) {
+ _dtmManager.release(this, true);
+ _documentID = 0;
+ }
+ }
+
}
Index: org/apache/xalan/xsltc/dom/AdaptiveResultTreeImpl.java
===================================================================
--- org/apache/xalan/xsltc/dom/AdaptiveResultTreeImpl.java (revision 640381)
+++ org/apache/xalan/xsltc/dom/AdaptiveResultTreeImpl.java (working copy)
@@ -1316,5 +1316,14 @@
super.documentRelease();
}
}
+
+ public void release()
+ {
+ if (_dom != null) {
+ _dom.release();
+ _dom = null;
+ }
+ super.release();
+ }
}
Index: org/apache/xalan/xsltc/dom/MultiDOM.java
===================================================================
--- org/apache/xalan/xsltc/dom/MultiDOM.java (revision 640381)
+++ org/apache/xalan/xsltc/dom/MultiDOM.java (working copy)
@@ -280,6 +280,58 @@
public int addDOMAdapter(DOMAdapter adapter) {
return addDOMAdapter(adapter, true);
}
+
+ private boolean isMatchingAdapterEntry(DOM entry, DOMAdapter adapter) {
+ DOM dom = adapter.getDOMImpl();
+
+ return (entry == adapter) || (
+
+ /*
+ * Method addDOMAdapter overwrites for AdaptiveResultTreeImpl
+ * objects the usual entry with an adapter to the nested
+ * DOM, so we must check this here. See last 'if' statement
+ * of addDOMAdapter.
+ */
+
+ (dom instanceof AdaptiveResultTreeImpl) &&
+ (entry instanceof DOMAdapter) &&
+ (((AdaptiveResultTreeImpl) dom).getNestedDOM()
+ == ((DOMAdapter) entry).getDOMImpl())
+ );
+ }
+
+ public void removeDOMAdapter(DOMAdapter adapter) {
+ _documents.remove(adapter.getDocumentURI(0));
+ DOM dom = adapter.getDOMImpl();
+
+ if (dom instanceof DTMDefaultBase) {
+ SuballocatedIntVector ids = ((DTMDefaultBase) dom).getDTMIDs();
+ int idsSize = ids.size();
+ for (int i = 0; i < idsSize; i++) {
+ _adapters[ids.elementAt(i) >>> DTMManager.IDENT_DTM_NODE_BITS] = null;
+ }
+ } else {
+ int id = dom.getDocument() >>> DTMManager.IDENT_DTM_NODE_BITS;
+ if ((id > 0) &&
+ (id < _adapters.length) &&
+ isMatchingAdapterEntry(_adapters[id], adapter)) {
+ _adapters[id] = null;
+ } else {
+ boolean found = false;
+
+ for (int i = 0; i < _adapters.length; i++) {
+ if (isMatchingAdapterEntry(_adapters[id], adapter)) {
+ _adapters[i] = null;
+ found = true;
+ }
+ }
+ if (!found) {
+ System.err.println("Warning: Memory leak in"
+ + " MultiDOM.removeDOMAdapter (adapter not found).");
+ }
+ }
+ }
+ }
private int addDOMAdapter(DOMAdapter adapter, boolean indexByURI) {
// Add the DOM adapter to the array of DOMs
@@ -662,4 +714,9 @@
public Hashtable getElementsWithIDs() {
return _main.getElementsWithIDs();
}
+
+ public void release() {
+ _main.release();
+ }
+
}
Index: org/apache/xalan/xsltc/DOM.java
===================================================================
--- org/apache/xalan/xsltc/DOM.java (revision 640381)
+++ org/apache/xalan/xsltc/DOM.java (working copy)
@@ -102,4 +102,5 @@
public int getDocument();
public String getUnparsedEntityURI(String name);
public Hashtable getElementsWithIDs();
+ public void release();
}
Index: org/apache/xalan/xsltc/compiler/WithParam.java
===================================================================
--- org/apache/xalan/xsltc/compiler/WithParam.java (revision 640381)
+++ org/apache/xalan/xsltc/compiler/WithParam.java (working copy)
@@ -22,9 +22,14 @@
package org.apache.xalan.xsltc.compiler;
import org.apache.bcel.generic.ConstantPoolGen;
+import org.apache.bcel.generic.ALOAD;
+import org.apache.bcel.generic.ASTORE;
+import org.apache.bcel.generic.CHECKCAST;
+import org.apache.bcel.generic.INVOKEINTERFACE;
import org.apache.bcel.generic.INVOKEVIRTUAL;
import org.apache.bcel.generic.InstructionList;
import org.apache.bcel.generic.PUSH;
+import org.apache.bcel.generic.LocalVariableGen;
import org.apache.xalan.xsltc.compiler.util.ClassGenerator;
import org.apache.xalan.xsltc.compiler.util.ErrorMsg;
import org.apache.xalan.xsltc.compiler.util.MethodGenerator;
@@ -56,6 +61,12 @@
* Parameter's default value.
*/
private Expression _select;
+
+ /**
+ * Reference to JVM variable with temporary result tree, which
+ * must be released after template call.
+ */
+ private LocalVariableGen _local;
/**
* %OPT% This is set to true when the WithParam is used in a CallTemplate
@@ -155,7 +166,10 @@
* a 'select' attribute, or in the with-param element's body
*/
public void translateValue(ClassGenerator classGen,
- MethodGenerator methodGen) {
+ MethodGenerator methodGen) {
+ final ConstantPoolGen cpg = classGen.getConstantPool();
+ final InstructionList il = methodGen.getInstructionList();
+
// Compile expression is 'select' attribute if present
if (_select != null) {
_select.translate(classGen, methodGen);
@@ -164,11 +178,16 @@
// If not, compile result tree from parameter body if present.
else if (hasContents()) {
compileResultTree(classGen, methodGen);
+
+ // store result tree into local variable to release them later
+
+ _local = methodGen.addLocalVariable2("@" + _escapedName,
+ Type.ResultTree.toJCType(), il.getEnd());
+ il.append(DUP);
+ il.append(new ASTORE(_local.getIndex()));
}
// If neither are present then store empty string in parameter slot
else {
- final ConstantPoolGen cpg = classGen.getConstantPool();
- final InstructionList il = methodGen.getInstructionList();
il.append(new PUSH(cpg, Constants.EMPTYSTRING));
}
}
@@ -206,4 +225,30 @@
ADD_PARAMETER_SIG)));
il.append(POP); // cleanup stack
}
+
+ public void unmap(ClassGenerator classGen, MethodGenerator methodGen) {
+ if (_local != null) {
+ // System.out.println("WithParam.unmap: index=" + _local.getIndex());
+ final InstructionList il = methodGen.getInstructionList();
+
+ if (classGen.getStylesheet().callsNodeset() &&
+ classGen.getDOMClass().equals(MULTI_DOM_CLASS)) {
+ final int removeCNI = classGen.getConstantPool().addMethodref(
+ MULTI_DOM_CLASS, "removeDOMAdapter",
+ "(" + DOM_ADAPTER_SIG + ")V");
+
+ il.append(methodGen.loadDOM());
+ il.append(new CHECKCAST(classGen.getConstantPool().addClass(MULTI_DOM_CLASS)));
+ il.append(new ALOAD(_local.getIndex()));
+ il.append(new CHECKCAST(classGen.getConstantPool().addClass(DOM_ADAPTER_CLASS)));
+ il.append(new INVOKEVIRTUAL(removeCNI));
+ }
+ final int releaseCNI = classGen.getConstantPool().addInterfaceMethodref(
+ DOM_IMPL_CLASS, "release", "()V");
+
+ il.append(new ALOAD(_local.getIndex()));
+ il.append(new INVOKEINTERFACE(releaseCNI, 1));
+ _local = null;
+ }
+ }
}
Index: org/apache/xalan/xsltc/compiler/SyntaxTreeNode.java
===================================================================
--- org/apache/xalan/xsltc/compiler/SyntaxTreeNode.java (revision 640381)
+++ org/apache/xalan/xsltc/compiler/SyntaxTreeNode.java (working copy)
@@ -524,7 +524,7 @@
for (int i = 0; i < n; i++) {
if( _contents.elementAt(i) instanceof VariableBase) {
final VariableBase var = (VariableBase)_contents.elementAt(i);
- var.unmapRegister(methodGen);
+ var.unmapRegister(classGen, methodGen);
}
}
}
Index: org/apache/xalan/xsltc/compiler/ApplyTemplates.java
===================================================================
--- org/apache/xalan/xsltc/compiler/ApplyTemplates.java (revision 640381)
+++ org/apache/xalan/xsltc/compiler/ApplyTemplates.java (working copy)
@@ -189,7 +189,17 @@
_functionName,
applyTemplatesSig);
il.append(new INVOKEVIRTUAL(applyTemplates));
+
+ // unmap parameters to release temporary result trees
+ final Enumeration childs = getContents().elements();
+ while (childs.hasMoreElements()) {
+ final Object child = childs.nextElement();
+ if (child instanceof WithParam) {
+ ((WithParam) child).unmap(classGen, methodGen);
+ }
+ }
+
// Pop parameter frame
if (stylesheet.hasLocalParams() || hasContents()) {
il.append(classGen.loadTranslet());
Index: org/apache/xalan/xsltc/compiler/VariableBase.java
===================================================================
--- org/apache/xalan/xsltc/compiler/VariableBase.java (revision 640381)
+++ org/apache/xalan/xsltc/compiler/VariableBase.java (working copy)
@@ -26,7 +26,10 @@
import org.apache.bcel.generic.ConstantPoolGen;
import org.apache.bcel.generic.Instruction;
import org.apache.bcel.generic.InstructionList;
+import org.apache.bcel.generic.CHECKCAST;
+import org.apache.bcel.generic.INVOKEINTERFACE;
import org.apache.bcel.generic.INVOKESPECIAL;
+import org.apache.bcel.generic.INVOKEVIRTUAL;
import org.apache.bcel.generic.LocalVariableGen;
import org.apache.bcel.generic.NEW;
import org.apache.bcel.generic.PUSH;
@@ -34,6 +37,7 @@
import org.apache.xalan.xsltc.compiler.util.ErrorMsg;
import org.apache.xalan.xsltc.compiler.util.MethodGenerator;
import org.apache.xalan.xsltc.compiler.util.NodeSetType;
+import org.apache.xalan.xsltc.compiler.util.ResultTreeType;
import org.apache.xalan.xsltc.compiler.util.Type;
import org.apache.xalan.xsltc.compiler.util.Util;
import org.apache.xml.utils.XML11Char;
@@ -96,12 +100,35 @@
* Remove the mapping of this variable to a register.
* Called when we leave the AST scope of the variable's declaration
*/
- public void unmapRegister(MethodGenerator methodGen) {
- if (_local != null) {
- _local.setEnd(methodGen.getInstructionList().getEnd());
- methodGen.removeLocalVariable(_local);
- _refs = null;
- _local = null;
+ public void unmapRegister(ClassGenerator classGen, MethodGenerator methodGen) {
+ if (_local != null) {
+ if (_type instanceof ResultTreeType) {
+ final ConstantPoolGen cpg = classGen.getConstantPool();
+ final InstructionList il = methodGen.getInstructionList();
+
+ if (classGen.getStylesheet().callsNodeset() &&
+ classGen.getDOMClass().equals(MULTI_DOM_CLASS)) {
+ final int removeCNI = cpg.addMethodref(
+ MULTI_DOM_CLASS, "removeDOMAdapter",
+ "(" + DOM_ADAPTER_SIG + ")V");
+
+ il.append(methodGen.loadDOM());
+ il.append(new CHECKCAST(cpg.addClass(MULTI_DOM_CLASS)));
+ il.append(loadInstruction());
+ il.append(new CHECKCAST(cpg.addClass(DOM_ADAPTER_CLASS)));
+ il.append(new INVOKEVIRTUAL(removeCNI));
+ }
+ final int releaseCNI = cpg.addInterfaceMethodref(
+ DOM_IMPL_CLASS, "release", "()V");
+ il.append(loadInstruction());
+ il.append(new INVOKEINTERFACE(releaseCNI, 1));
+ }
+ if (_refs.isEmpty()) {
+ _local.setEnd(methodGen.getInstructionList().getEnd());
+ methodGen.removeLocalVariable(_local);
+ _refs = null;
+ _local = null;
+ }
}
}
Index: org/apache/xalan/xsltc/compiler/CallTemplate.java
===================================================================
--- org/apache/xalan/xsltc/compiler/CallTemplate.java (revision 640381)
+++ org/apache/xalan/xsltc/compiler/CallTemplate.java (working copy)
@@ -167,7 +167,15 @@
il.append(new INVOKEVIRTUAL(cpg.addMethodref(className,
methodName,
methodSig.toString())));
-
+
+ // unmap parameters to release temporary result trees
+
+ for (int i = 0; i < _parameters.length; i++) {
+ if(_parameters[i] instanceof WithParam) {
+ ((WithParam) _parameters[i]).unmap(classGen, methodGen);
+ }
+ }
+
// Do not need to call Translet.popParamFrame() if we are
// calling a simple named template.
if (_calleeTemplate == null && (stylesheet.hasLocalParams() || hasContents())) {
> [PATCH] XSLTC resource leak causes 'No more DTM IDs are available' error
> ------------------------------------------------------------------------
>
> Key: XALANJ-2439
> URL: https://issues.apache.org/jira/browse/XALANJ-2439
> Project: XalanJ2
> Issue Type: Bug
> Components: XSLTC
> Affects Versions: The Latest Development Code
> Environment: Linux and Windows XP with Sun JRE 1.5.0_15 and 1.6.0_05
> Reporter: Helge Schulz
> Priority: Minor
> Fix For: The Latest Development Code
>
> Original Estimate: 4h
> Remaining Estimate: 4h
>
> The Xalan XSLT compiler (XSLTC) has several resource leaks in handling
> result tree fragments in XSLT variables and parameters. If a variable
> or parameter declaration contains XML elements, a new DOM tree is created
> and a new internal integer id is reserved for it. The garbage collector can
> never retrieve this DOM tree, because the id registration holds a reference
> to it. This bug prevents the transformation of large input files, because
> complex templates creates many result tree fragments and exceeds often the
> absolute limit of possible DOM trees in XSLTC (2^16 = 65535). If this
> limit is reached, XSLTC throws the following exception:
> DTMException: No more DTM IDs are available
> The attached patch adds a new release method to the DOM interface and calls
> it, when the scope of a variable or parameter is leaved.
> You can test this patch with the attached JAR file. This file can be
> called with
> java -Xmx800M -jar DOMLeak-XSLT-Test-X.Y.jar
> This file contains four test style sheets with expected output files.
> This bug exists also in *all* Sun JRE 1.5 and 1.6 versions, because the
> Xalan XSLTC source code is used in the 'com.sun.org.apache.xalan.internal'
> packages. The attached test JAR file contains also a patch for the current
> Sun JRE version 1.6.0_5 and a fix JAR file to be installed into the
> '../jre/lib/endorsed' directory of the JRE installation.
> Please add the attached test files to the Xalan test suite. I have
> released them under Apache license version 2.0.
> Helge Schulz - http://OpenSHORE.org
> ----------
> Here is the output of running my test cases with several Java version:
> test:
> apply-with-all-versions:
> [apply] Buildfile: build.xml
> [apply] test-java:
> [apply] [echo] Test Sun Java 1.4.2_17 with integrated XSLT
> [apply] [java] Testing DOMLeak-1-ResultTreeInVariable.xsl... Ok.
> [apply] [java] Testing DOMLeak-2-ResultTreeInCallParameter.xsl... Ok.
> [apply] [java] Testing DOMLeak-3-ResultTreeInApplyParameter.xsl... Ok.
> [apply] [java] Testing DOMLeak-4-NodeSetAndMultiDOM.xsl... Ok.
> [apply] [echo]
> [apply] [echo] Test Sun Java 1.4.2_17 with latest Xalan (SVN revision 584164)
> [apply] [java] Testing DOMLeak-1-ResultTreeInVariable.xsl... ERROR: 'No more DTM IDs are available'
> [apply] [java] XSLT Exception: org.apache.xml.dtm.DTMException: No more DTM IDs are available
> [apply] [java] Testing DOMLeak-2-ResultTreeInCallParameter.xsl... ERROR: 'No more DTM IDs are available'
> [apply] [java] XSLT Exception: org.apache.xml.dtm.DTMException: No more DTM IDs are available
> [apply] [java] Testing DOMLeak-3-ResultTreeInApplyParameter.xsl... ERROR: 'No more DTM IDs are available'
> [apply] [java] XSLT Exception: org.apache.xml.dtm.DTMException: No more DTM IDs are available
> [apply] [java] Testing DOMLeak-4-NodeSetAndMultiDOM.xsl... ERROR: 'No more DTM IDs are available'
> [apply] [java] XSLT Exception: org.apache.xml.dtm.DTMException: No more DTM IDs are available
> [apply] [echo]
> [apply] [echo] Test Sun Java 1.4.2_17 with fixed Xalan
> [apply] [java] Testing DOMLeak-1-ResultTreeInVariable.xsl... Ok.
> [apply] [java] Testing DOMLeak-2-ResultTreeInCallParameter.xsl... Ok.
> [apply] [java] Testing DOMLeak-3-ResultTreeInApplyParameter.xsl... Ok.
> [apply] [java] Testing DOMLeak-4-NodeSetAndMultiDOM.xsl... Ok.
> [apply] BUILD SUCCESSFUL
> [apply] Total time: 1 minute 21 seconds
> [apply] Buildfile: build.xml
> [apply] test-java:
> [apply] [echo] Test Sun Java 1.5.0_15 with integrated XSLT
> [apply] [java] Testing DOMLeak-1-ResultTreeInVariable.xsl... ERROR: 'No more DTM IDs are available'
> [apply] [java] XSLT Exception: com.sun.org.apache.xml.internal.dtm.DTMException: No more DTM IDs are available
> [apply] [java] Testing DOMLeak-2-ResultTreeInCallParameter.xsl... ERROR: 'No more DTM IDs are available'
> [apply] [java] XSLT Exception: com.sun.org.apache.xml.internal.dtm.DTMException: No more DTM IDs are available
> [apply] [java] Testing DOMLeak-3-ResultTreeInApplyParameter.xsl... ERROR: 'No more DTM IDs are available'
> [apply] [java] XSLT Exception: com.sun.org.apache.xml.internal.dtm.DTMException: No more DTM IDs are available
> [apply] [java] Testing DOMLeak-4-NodeSetAndMultiDOM.xsl... ERROR: 'No more DTM IDs are available'
> [apply] [java] XSLT Exception: com.sun.org.apache.xml.internal.dtm.DTMException: No more DTM IDs are available
> [apply] [echo]
> [apply] [echo] Test Sun Java 1.5.0_15 with latest Xalan (SVN revision 584164)
> [apply] [java] Testing DOMLeak-1-ResultTreeInVariable.xsl... ERROR: 'No more DTM IDs are available'
> [apply] [java] XSLT Exception: org.apache.xml.dtm.DTMException: No more DTM IDs are available
> [apply] [java] Testing DOMLeak-2-ResultTreeInCallParameter.xsl... ERROR: 'No more DTM IDs are available'
> [apply] [java] XSLT Exception: org.apache.xml.dtm.DTMException: No more DTM IDs are available
> [apply] [java] Testing DOMLeak-3-ResultTreeInApplyParameter.xsl... ERROR: 'No more DTM IDs are available'
> [apply] [java] XSLT Exception: org.apache.xml.dtm.DTMException: No more DTM IDs are available
> [apply] [java] Testing DOMLeak-4-NodeSetAndMultiDOM.xsl... ERROR: 'No more DTM IDs are available'
> [apply] [java] XSLT Exception: org.apache.xml.dtm.DTMException: No more DTM IDs are available
> [apply] [echo]
> [apply] [echo] Test Sun Java 1.5.0_15 with fixed Xalan
> [apply] [java] Testing DOMLeak-1-ResultTreeInVariable.xsl... Ok.
> [apply] [java] Testing DOMLeak-2-ResultTreeInCallParameter.xsl... Ok.
> [apply] [java] Testing DOMLeak-3-ResultTreeInApplyParameter.xsl... Ok.
> [apply] [java] Testing DOMLeak-4-NodeSetAndMultiDOM.xsl... Ok.
> [apply] BUILD SUCCESSFUL
> [apply] Total time: 2 minutes 13 seconds
> [apply] Buildfile: build.xml
> [apply] test-java:
> [apply] [echo] Test Sun Java 1.6.0_05 with integrated XSLT
> [apply] [java] Testing DOMLeak-1-ResultTreeInVariable.xsl... ERROR: 'No more DTM IDs are available'
> [apply] [java] XSLT Exception: com.sun.org.apache.xml.internal.dtm.DTMException: No more DTM IDs are available
> [apply] [java] Testing DOMLeak-2-ResultTreeInCallParameter.xsl... ERROR: 'No more DTM IDs are available'
> [apply] [java] XSLT Exception: com.sun.org.apache.xml.internal.dtm.DTMException: No more DTM IDs are available
> [apply] [java] Testing DOMLeak-3-ResultTreeInApplyParameter.xsl... ERROR: 'No more DTM IDs are available'
> [apply] [java] XSLT Exception: com.sun.org.apache.xml.internal.dtm.DTMException: No more DTM IDs are available
> [apply] [java] Testing DOMLeak-4-NodeSetAndMultiDOM.xsl... ERROR: 'No more DTM IDs are available'
> [apply] [java] XSLT Exception: com.sun.org.apache.xml.internal.dtm.DTMException: No more DTM IDs are available
> [apply] [echo]
> [apply] [echo] Test Sun Java 1.6.0_05 with latest Xalan (SVN revision 584164)
> [apply] [java] Testing DOMLeak-1-ResultTreeInVariable.xsl... ERROR: 'No more DTM IDs are available'
> [apply] [java] XSLT Exception: org.apache.xml.dtm.DTMException: No more DTM IDs are available
> [apply] [java] Testing DOMLeak-2-ResultTreeInCallParameter.xsl... ERROR: 'No more DTM IDs are available'
> [apply] [java] XSLT Exception: org.apache.xml.dtm.DTMException: No more DTM IDs are available
> [apply] [java] Testing DOMLeak-3-ResultTreeInApplyParameter.xsl... ERROR: 'No more DTM IDs are available'
> [apply] [java] XSLT Exception: org.apache.xml.dtm.DTMException: No more DTM IDs are available
> [apply] [java] Testing DOMLeak-4-NodeSetAndMultiDOM.xsl... ERROR: 'No more DTM IDs are available'
> [apply] [java] XSLT Exception: org.apache.xml.dtm.DTMException: No more DTM IDs are available
> [apply] [echo]
> [apply] [echo] Test Sun Java 1.6.0_05 with fixed Xalan
> [apply] [java] Testing DOMLeak-1-ResultTreeInVariable.xsl... Ok.
> [apply] [java] Testing DOMLeak-2-ResultTreeInCallParameter.xsl... Ok.
> [apply] [java] Testing DOMLeak-3-ResultTreeInApplyParameter.xsl... Ok.
> [apply] [java] Testing DOMLeak-4-NodeSetAndMultiDOM.xsl... Ok.
> [apply] BUILD SUCCESSFUL
> [apply] Total time: 1 minute 42 seconds
> BUILD SUCCESSFUL
> Total time: 5 minutes 22 seconds
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[jira] Commented: (XALANJ-2439) [PATCH] XSLTC resource leak causes
'No more DTM IDs are available' error
Posted by "Henry Zongaro (JIRA)" <xa...@xml.apache.org>.
[ https://issues.apache.org/jira/browse/XALANJ-2439?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12833005#action_12833005 ]
Henry Zongaro commented on XALANJ-2439:
---------------------------------------
As with bug XALANJ-2438, it seems there is some code derived from Sun's reference implementation of JAXP in a jar file attached to this bug report: DOMLeak-XSLT-Test-1.0.jar. May I ask you to remove that code, since it's licensed under different terms than the Apache license? Because you've accessed Sun's reference implementation, I won't be able to review your patches, as they might contain code that's covered under Sun's copyright. As I am not an employee of Sun or Oracle, I don't have the authority to contribute Sun copyright code to the Apache project. Only an employee of Sun or Oracle who has signed an Apache CLA can contribute such code.
Thanks for your understanding,
Henry
> [PATCH] XSLTC resource leak causes 'No more DTM IDs are available' error
> ------------------------------------------------------------------------
>
> Key: XALANJ-2439
> URL: https://issues.apache.org/jira/browse/XALANJ-2439
> Project: XalanJ2
> Issue Type: Bug
> Components: XSLTC
> Affects Versions: The Latest Development Code
> Environment: Linux and Windows XP with Sun JRE 1.5.0_15 and 1.6.0_05
> Reporter: Helge Schulz
> Priority: Minor
> Fix For: The Latest Development Code
>
> Attachments: DOMLeak-4-NodeSetAndMultiDOM.xsl, DOMLeak-Xalan-SVN-r584164.patch, DOMLeak-XSLT-Test-1.0.jar
>
> Original Estimate: 4h
> Remaining Estimate: 4h
>
> The Xalan XSLT compiler (XSLTC) has several resource leaks in handling
> result tree fragments in XSLT variables and parameters. If a variable
> or parameter declaration contains XML elements, a new DOM tree is created
> and a new internal integer id is reserved for it. The garbage collector can
> never retrieve this DOM tree, because the id registration holds a reference
> to it. This bug prevents the transformation of large input files, because
> complex templates creates many result tree fragments and exceeds often the
> absolute limit of possible DOM trees in XSLTC (2^16 = 65535). If this
> limit is reached, XSLTC throws the following exception:
> DTMException: No more DTM IDs are available
> The attached patch adds a new release method to the DOM interface and calls
> it, when the scope of a variable or parameter is leaved.
> You can test this patch with the attached JAR file. This file can be
> called with
> java -Xmx800M -jar DOMLeak-XSLT-Test-X.Y.jar
> This file contains four test style sheets with expected output files.
> This bug exists also in *all* Sun JRE 1.5 and 1.6 versions, because the
> Xalan XSLTC source code is used in the 'com.sun.org.apache.xalan.internal'
> packages. The attached test JAR file contains also a patch for the current
> Sun JRE version 1.6.0_5 and a fix JAR file to be installed into the
> '../jre/lib/endorsed' directory of the JRE installation.
> Please add the attached test files to the Xalan test suite. I have
> released them under Apache license version 2.0.
> Helge Schulz - http://OpenSHORE.org
> ----------
> Here is the output of running my test cases with several Java version:
> test:
> apply-with-all-versions:
> [apply] Buildfile: build.xml
> [apply] test-java:
> [apply] [echo] Test Sun Java 1.4.2_17 with integrated XSLT
> [apply] [java] Testing DOMLeak-1-ResultTreeInVariable.xsl... Ok.
> [apply] [java] Testing DOMLeak-2-ResultTreeInCallParameter.xsl... Ok.
> [apply] [java] Testing DOMLeak-3-ResultTreeInApplyParameter.xsl... Ok.
> [apply] [java] Testing DOMLeak-4-NodeSetAndMultiDOM.xsl... Ok.
> [apply] [echo]
> [apply] [echo] Test Sun Java 1.4.2_17 with latest Xalan (SVN revision 584164)
> [apply] [java] Testing DOMLeak-1-ResultTreeInVariable.xsl... ERROR: 'No more DTM IDs are available'
> [apply] [java] XSLT Exception: org.apache.xml.dtm.DTMException: No more DTM IDs are available
> [apply] [java] Testing DOMLeak-2-ResultTreeInCallParameter.xsl... ERROR: 'No more DTM IDs are available'
> [apply] [java] XSLT Exception: org.apache.xml.dtm.DTMException: No more DTM IDs are available
> [apply] [java] Testing DOMLeak-3-ResultTreeInApplyParameter.xsl... ERROR: 'No more DTM IDs are available'
> [apply] [java] XSLT Exception: org.apache.xml.dtm.DTMException: No more DTM IDs are available
> [apply] [java] Testing DOMLeak-4-NodeSetAndMultiDOM.xsl... ERROR: 'No more DTM IDs are available'
> [apply] [java] XSLT Exception: org.apache.xml.dtm.DTMException: No more DTM IDs are available
> [apply] [echo]
> [apply] [echo] Test Sun Java 1.4.2_17 with fixed Xalan
> [apply] [java] Testing DOMLeak-1-ResultTreeInVariable.xsl... Ok.
> [apply] [java] Testing DOMLeak-2-ResultTreeInCallParameter.xsl... Ok.
> [apply] [java] Testing DOMLeak-3-ResultTreeInApplyParameter.xsl... Ok.
> [apply] [java] Testing DOMLeak-4-NodeSetAndMultiDOM.xsl... Ok.
> [apply] BUILD SUCCESSFUL
> [apply] Total time: 1 minute 21 seconds
> [apply] Buildfile: build.xml
> [apply] test-java:
> [apply] [echo] Test Sun Java 1.5.0_15 with integrated XSLT
> [apply] [java] Testing DOMLeak-1-ResultTreeInVariable.xsl... ERROR: 'No more DTM IDs are available'
> [apply] [java] XSLT Exception: com.sun.org.apache.xml.internal.dtm.DTMException: No more DTM IDs are available
> [apply] [java] Testing DOMLeak-2-ResultTreeInCallParameter.xsl... ERROR: 'No more DTM IDs are available'
> [apply] [java] XSLT Exception: com.sun.org.apache.xml.internal.dtm.DTMException: No more DTM IDs are available
> [apply] [java] Testing DOMLeak-3-ResultTreeInApplyParameter.xsl... ERROR: 'No more DTM IDs are available'
> [apply] [java] XSLT Exception: com.sun.org.apache.xml.internal.dtm.DTMException: No more DTM IDs are available
> [apply] [java] Testing DOMLeak-4-NodeSetAndMultiDOM.xsl... ERROR: 'No more DTM IDs are available'
> [apply] [java] XSLT Exception: com.sun.org.apache.xml.internal.dtm.DTMException: No more DTM IDs are available
> [apply] [echo]
> [apply] [echo] Test Sun Java 1.5.0_15 with latest Xalan (SVN revision 584164)
> [apply] [java] Testing DOMLeak-1-ResultTreeInVariable.xsl... ERROR: 'No more DTM IDs are available'
> [apply] [java] XSLT Exception: org.apache.xml.dtm.DTMException: No more DTM IDs are available
> [apply] [java] Testing DOMLeak-2-ResultTreeInCallParameter.xsl... ERROR: 'No more DTM IDs are available'
> [apply] [java] XSLT Exception: org.apache.xml.dtm.DTMException: No more DTM IDs are available
> [apply] [java] Testing DOMLeak-3-ResultTreeInApplyParameter.xsl... ERROR: 'No more DTM IDs are available'
> [apply] [java] XSLT Exception: org.apache.xml.dtm.DTMException: No more DTM IDs are available
> [apply] [java] Testing DOMLeak-4-NodeSetAndMultiDOM.xsl... ERROR: 'No more DTM IDs are available'
> [apply] [java] XSLT Exception: org.apache.xml.dtm.DTMException: No more DTM IDs are available
> [apply] [echo]
> [apply] [echo] Test Sun Java 1.5.0_15 with fixed Xalan
> [apply] [java] Testing DOMLeak-1-ResultTreeInVariable.xsl... Ok.
> [apply] [java] Testing DOMLeak-2-ResultTreeInCallParameter.xsl... Ok.
> [apply] [java] Testing DOMLeak-3-ResultTreeInApplyParameter.xsl... Ok.
> [apply] [java] Testing DOMLeak-4-NodeSetAndMultiDOM.xsl... Ok.
> [apply] BUILD SUCCESSFUL
> [apply] Total time: 2 minutes 13 seconds
> [apply] Buildfile: build.xml
> [apply] test-java:
> [apply] [echo] Test Sun Java 1.6.0_05 with integrated XSLT
> [apply] [java] Testing DOMLeak-1-ResultTreeInVariable.xsl... ERROR: 'No more DTM IDs are available'
> [apply] [java] XSLT Exception: com.sun.org.apache.xml.internal.dtm.DTMException: No more DTM IDs are available
> [apply] [java] Testing DOMLeak-2-ResultTreeInCallParameter.xsl... ERROR: 'No more DTM IDs are available'
> [apply] [java] XSLT Exception: com.sun.org.apache.xml.internal.dtm.DTMException: No more DTM IDs are available
> [apply] [java] Testing DOMLeak-3-ResultTreeInApplyParameter.xsl... ERROR: 'No more DTM IDs are available'
> [apply] [java] XSLT Exception: com.sun.org.apache.xml.internal.dtm.DTMException: No more DTM IDs are available
> [apply] [java] Testing DOMLeak-4-NodeSetAndMultiDOM.xsl... ERROR: 'No more DTM IDs are available'
> [apply] [java] XSLT Exception: com.sun.org.apache.xml.internal.dtm.DTMException: No more DTM IDs are available
> [apply] [echo]
> [apply] [echo] Test Sun Java 1.6.0_05 with latest Xalan (SVN revision 584164)
> [apply] [java] Testing DOMLeak-1-ResultTreeInVariable.xsl... ERROR: 'No more DTM IDs are available'
> [apply] [java] XSLT Exception: org.apache.xml.dtm.DTMException: No more DTM IDs are available
> [apply] [java] Testing DOMLeak-2-ResultTreeInCallParameter.xsl... ERROR: 'No more DTM IDs are available'
> [apply] [java] XSLT Exception: org.apache.xml.dtm.DTMException: No more DTM IDs are available
> [apply] [java] Testing DOMLeak-3-ResultTreeInApplyParameter.xsl... ERROR: 'No more DTM IDs are available'
> [apply] [java] XSLT Exception: org.apache.xml.dtm.DTMException: No more DTM IDs are available
> [apply] [java] Testing DOMLeak-4-NodeSetAndMultiDOM.xsl... ERROR: 'No more DTM IDs are available'
> [apply] [java] XSLT Exception: org.apache.xml.dtm.DTMException: No more DTM IDs are available
> [apply] [echo]
> [apply] [echo] Test Sun Java 1.6.0_05 with fixed Xalan
> [apply] [java] Testing DOMLeak-1-ResultTreeInVariable.xsl... Ok.
> [apply] [java] Testing DOMLeak-2-ResultTreeInCallParameter.xsl... Ok.
> [apply] [java] Testing DOMLeak-3-ResultTreeInApplyParameter.xsl... Ok.
> [apply] [java] Testing DOMLeak-4-NodeSetAndMultiDOM.xsl... Ok.
> [apply] BUILD SUCCESSFUL
> [apply] Total time: 1 minute 42 seconds
> BUILD SUCCESSFUL
> Total time: 5 minutes 22 seconds
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[jira] Commented: (XALANJ-2439) [PATCH] XSLTC resource leak causes
'No more DTM IDs are available' error
Posted by "Eric Schwarzenbach (JIRA)" <xa...@xml.apache.org>.
[ https://issues.apache.org/jira/browse/XALANJ-2439?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12854145#action_12854145 ]
Eric Schwarzenbach commented on XALANJ-2439:
--------------------------------------------
I can tell you this patch does not fix all DTM "leaks".
My own situation is of a template which makes many call-back to my system using a Java extension function which returns a DOM NodeList as a result. To simplify the scenario, it is more or less like the following: the document being transformed has a large number X elements. There is a template for element X in my XSLT that makes several such extension function calls, generating (as seen by debugging) a DTM for each of these; these are not released when the template is exited. I've applied this patch (manually) to the Xalan-J 2.7.1 release source, and it does not release the DTMs created in this way.
FWIW, here is a stack trace from the DTMManagerDefault.addDTM call (I simply created a RuntimeException in the code and logged it with log4j as a convenient way to get this):
org.apache.xml.dtm.ref.DTMManagerDefault : StackTrace for addDTM
java.lang.RuntimeException: fake exception for stacktrace
at org.apache.xml.dtm.ref.DTMManagerDefault.addDTM(DTMManagerDefault.java:167)
at org.apache.xml.dtm.ref.DTMManagerDefault.getDTM(DTMManagerDefault.java:276)
at org.apache.xml.dtm.ref.DTMManagerDefault.getDTMHandleFromNode(DTMManagerDefault.java:579)
at org.apache.xpath.XPathContext.getDTMHandleFromNode(XPathContext.java:189)
at org.apache.xpath.NodeSetDTM.<init>(NodeSetDTM.java:171)
at org.apache.xpath.objects.XNodeSetForDOM.<init>(XNodeSetForDOM.java:70)
at org.apache.xpath.objects.XObjectFactory.create(XObjectFactory.java:148)
at org.apache.xpath.objects.XObject.create(XObject.java:180)
at org.apache.xpath.functions.FuncExtFunction.execute(FuncExtFunction.java:212)
at org.apache.xpath.XPath.execute(XPath.java:337)
at org.apache.xalan.templates.ElemVariable.getValue(ElemVariable.java:280)
at org.apache.xalan.templates.ElemVariable.execute(ElemVariable.java:248)
at org.apache.xalan.transformer.TransformerImpl.executeChildTemplates(TransformerImpl.java:2405)
at org.apache.xalan.templates.ElemElement.constructNode(ElemElement.java:341)
at org.apache.xalan.templates.ElemElement.execute(ElemElement.java:290)
at org.apache.xalan.templates.ElemApplyTemplates.transformSelectedNodes(ElemApplyTemplates.java:395)
at org.apache.xalan.templates.ElemApplyTemplates.execute(ElemApplyTemplates.java:178)
at org.apache.xalan.transformer.TransformerImpl.executeChildTemplates(TransformerImpl.java:2405)
at org.apache.xalan.templates.ElemCopy.execute(ElemCopy.java:116)
at org.apache.xalan.templates.ElemApplyTemplates.transformSelectedNodes(ElemApplyTemplates.java:395)
at org.apache.xalan.templates.ElemApplyTemplates.execute(ElemApplyTemplates.java:178)
at org.apache.xalan.transformer.TransformerImpl.executeChildTemplates(TransformerImpl.java:2405)
at org.apache.xalan.templates.ElemCopy.execute(ElemCopy.java:116)
at org.apache.xalan.templates.ElemApplyTemplates.transformSelectedNodes(ElemApplyTemplates.java:395)
at org.apache.xalan.templates.ElemApplyTemplates.execute(ElemApplyTemplates.java:178)
at org.apache.xalan.transformer.TransformerImpl.executeChildTemplates(TransformerImpl.java:2405)
at org.apache.xalan.templates.ElemCopy.execute(ElemCopy.java:116)
at org.apache.xalan.templates.ElemApplyTemplates.transformSelectedNodes(ElemApplyTemplates.java:395)
at org.apache.xalan.templates.ElemApplyTemplates.execute(ElemApplyTemplates.java:178)
at org.apache.xalan.transformer.TransformerImpl.executeChildTemplates(TransformerImpl.java:2405)
at org.apache.xalan.transformer.TransformerImpl.executeChildTemplates(TransformerImpl.java:2458)
at org.apache.xalan.transformer.TransformerImpl.executeChildTemplates(TransformerImpl.java:2328)
at org.apache.xalan.lib.Redirect.write(Redirect.java:216)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.apache.xalan.extensions.ExtensionHandlerJavaClass.processElement(ExtensionHandlerJavaClass.java:517)
at org.apache.xalan.templates.ElemExtensionCall.execute(ElemExtensionCall.java:234)
at org.apache.xalan.transformer.TransformerImpl.executeChildTemplates(TransformerImpl.java:2405)
at org.apache.xalan.templates.ElemChoose.execute(ElemChoose.java:128)
at org.apache.xalan.transformer.TransformerImpl.executeChildTemplates(TransformerImpl.java:2405)
at org.apache.xalan.transformer.TransformerImpl.applyTemplateToNode(TransformerImpl.java:2275)
at org.apache.xalan.transformer.TransformerImpl.transformNode(TransformerImpl.java:1361)
at org.apache.xalan.transformer.TransformerImpl.transform(TransformerImpl.java:711)
at org.apache.xalan.transformer.TransformerImpl.transform(TransformerImpl.java:1278)
at org.apache.xalan.transformer.TransformerImpl.transform(TransformerImpl.java:1256)
at com.wrycan.xms.publisher.transform.XSLTransformType.transform(XSLTransformType.java:92)
I'd note that the code path here seems to be going through none of the classes modified by the patch.
> [PATCH] XSLTC resource leak causes 'No more DTM IDs are available' error
> ------------------------------------------------------------------------
>
> Key: XALANJ-2439
> URL: https://issues.apache.org/jira/browse/XALANJ-2439
> Project: XalanJ2
> Issue Type: Bug
> Components: XSLTC
> Affects Versions: The Latest Development Code
> Environment: Linux and Windows XP with Sun JRE 1.5.0_15 and 1.6.0_05
> Reporter: Helge Schulz
> Priority: Minor
> Fix For: The Latest Development Code
>
> Attachments: DOMLeak-4-NodeSetAndMultiDOM.xsl, DOMLeak-Xalan-SVN-r584164.patch, DOMLeak-XSLT-Test-1.0.jar
>
> Original Estimate: 4h
> Remaining Estimate: 4h
>
> The Xalan XSLT compiler (XSLTC) has several resource leaks in handling
> result tree fragments in XSLT variables and parameters. If a variable
> or parameter declaration contains XML elements, a new DOM tree is created
> and a new internal integer id is reserved for it. The garbage collector can
> never retrieve this DOM tree, because the id registration holds a reference
> to it. This bug prevents the transformation of large input files, because
> complex templates creates many result tree fragments and exceeds often the
> absolute limit of possible DOM trees in XSLTC (2^16 = 65535). If this
> limit is reached, XSLTC throws the following exception:
> DTMException: No more DTM IDs are available
> The attached patch adds a new release method to the DOM interface and calls
> it, when the scope of a variable or parameter is leaved.
> You can test this patch with the attached JAR file. This file can be
> called with
> java -Xmx800M -jar DOMLeak-XSLT-Test-X.Y.jar
> This file contains four test style sheets with expected output files.
> This bug exists also in *all* Sun JRE 1.5 and 1.6 versions, because the
> Xalan XSLTC source code is used in the 'com.sun.org.apache.xalan.internal'
> packages. The attached test JAR file contains also a patch for the current
> Sun JRE version 1.6.0_5 and a fix JAR file to be installed into the
> '../jre/lib/endorsed' directory of the JRE installation.
> Please add the attached test files to the Xalan test suite. I have
> released them under Apache license version 2.0.
> Helge Schulz - http://OpenSHORE.org
> ----------
> Here is the output of running my test cases with several Java version:
> test:
> apply-with-all-versions:
> [apply] Buildfile: build.xml
> [apply] test-java:
> [apply] [echo] Test Sun Java 1.4.2_17 with integrated XSLT
> [apply] [java] Testing DOMLeak-1-ResultTreeInVariable.xsl... Ok.
> [apply] [java] Testing DOMLeak-2-ResultTreeInCallParameter.xsl... Ok.
> [apply] [java] Testing DOMLeak-3-ResultTreeInApplyParameter.xsl... Ok.
> [apply] [java] Testing DOMLeak-4-NodeSetAndMultiDOM.xsl... Ok.
> [apply] [echo]
> [apply] [echo] Test Sun Java 1.4.2_17 with latest Xalan (SVN revision 584164)
> [apply] [java] Testing DOMLeak-1-ResultTreeInVariable.xsl... ERROR: 'No more DTM IDs are available'
> [apply] [java] XSLT Exception: org.apache.xml.dtm.DTMException: No more DTM IDs are available
> [apply] [java] Testing DOMLeak-2-ResultTreeInCallParameter.xsl... ERROR: 'No more DTM IDs are available'
> [apply] [java] XSLT Exception: org.apache.xml.dtm.DTMException: No more DTM IDs are available
> [apply] [java] Testing DOMLeak-3-ResultTreeInApplyParameter.xsl... ERROR: 'No more DTM IDs are available'
> [apply] [java] XSLT Exception: org.apache.xml.dtm.DTMException: No more DTM IDs are available
> [apply] [java] Testing DOMLeak-4-NodeSetAndMultiDOM.xsl... ERROR: 'No more DTM IDs are available'
> [apply] [java] XSLT Exception: org.apache.xml.dtm.DTMException: No more DTM IDs are available
> [apply] [echo]
> [apply] [echo] Test Sun Java 1.4.2_17 with fixed Xalan
> [apply] [java] Testing DOMLeak-1-ResultTreeInVariable.xsl... Ok.
> [apply] [java] Testing DOMLeak-2-ResultTreeInCallParameter.xsl... Ok.
> [apply] [java] Testing DOMLeak-3-ResultTreeInApplyParameter.xsl... Ok.
> [apply] [java] Testing DOMLeak-4-NodeSetAndMultiDOM.xsl... Ok.
> [apply] BUILD SUCCESSFUL
> [apply] Total time: 1 minute 21 seconds
> [apply] Buildfile: build.xml
> [apply] test-java:
> [apply] [echo] Test Sun Java 1.5.0_15 with integrated XSLT
> [apply] [java] Testing DOMLeak-1-ResultTreeInVariable.xsl... ERROR: 'No more DTM IDs are available'
> [apply] [java] XSLT Exception: com.sun.org.apache.xml.internal.dtm.DTMException: No more DTM IDs are available
> [apply] [java] Testing DOMLeak-2-ResultTreeInCallParameter.xsl... ERROR: 'No more DTM IDs are available'
> [apply] [java] XSLT Exception: com.sun.org.apache.xml.internal.dtm.DTMException: No more DTM IDs are available
> [apply] [java] Testing DOMLeak-3-ResultTreeInApplyParameter.xsl... ERROR: 'No more DTM IDs are available'
> [apply] [java] XSLT Exception: com.sun.org.apache.xml.internal.dtm.DTMException: No more DTM IDs are available
> [apply] [java] Testing DOMLeak-4-NodeSetAndMultiDOM.xsl... ERROR: 'No more DTM IDs are available'
> [apply] [java] XSLT Exception: com.sun.org.apache.xml.internal.dtm.DTMException: No more DTM IDs are available
> [apply] [echo]
> [apply] [echo] Test Sun Java 1.5.0_15 with latest Xalan (SVN revision 584164)
> [apply] [java] Testing DOMLeak-1-ResultTreeInVariable.xsl... ERROR: 'No more DTM IDs are available'
> [apply] [java] XSLT Exception: org.apache.xml.dtm.DTMException: No more DTM IDs are available
> [apply] [java] Testing DOMLeak-2-ResultTreeInCallParameter.xsl... ERROR: 'No more DTM IDs are available'
> [apply] [java] XSLT Exception: org.apache.xml.dtm.DTMException: No more DTM IDs are available
> [apply] [java] Testing DOMLeak-3-ResultTreeInApplyParameter.xsl... ERROR: 'No more DTM IDs are available'
> [apply] [java] XSLT Exception: org.apache.xml.dtm.DTMException: No more DTM IDs are available
> [apply] [java] Testing DOMLeak-4-NodeSetAndMultiDOM.xsl... ERROR: 'No more DTM IDs are available'
> [apply] [java] XSLT Exception: org.apache.xml.dtm.DTMException: No more DTM IDs are available
> [apply] [echo]
> [apply] [echo] Test Sun Java 1.5.0_15 with fixed Xalan
> [apply] [java] Testing DOMLeak-1-ResultTreeInVariable.xsl... Ok.
> [apply] [java] Testing DOMLeak-2-ResultTreeInCallParameter.xsl... Ok.
> [apply] [java] Testing DOMLeak-3-ResultTreeInApplyParameter.xsl... Ok.
> [apply] [java] Testing DOMLeak-4-NodeSetAndMultiDOM.xsl... Ok.
> [apply] BUILD SUCCESSFUL
> [apply] Total time: 2 minutes 13 seconds
> [apply] Buildfile: build.xml
> [apply] test-java:
> [apply] [echo] Test Sun Java 1.6.0_05 with integrated XSLT
> [apply] [java] Testing DOMLeak-1-ResultTreeInVariable.xsl... ERROR: 'No more DTM IDs are available'
> [apply] [java] XSLT Exception: com.sun.org.apache.xml.internal.dtm.DTMException: No more DTM IDs are available
> [apply] [java] Testing DOMLeak-2-ResultTreeInCallParameter.xsl... ERROR: 'No more DTM IDs are available'
> [apply] [java] XSLT Exception: com.sun.org.apache.xml.internal.dtm.DTMException: No more DTM IDs are available
> [apply] [java] Testing DOMLeak-3-ResultTreeInApplyParameter.xsl... ERROR: 'No more DTM IDs are available'
> [apply] [java] XSLT Exception: com.sun.org.apache.xml.internal.dtm.DTMException: No more DTM IDs are available
> [apply] [java] Testing DOMLeak-4-NodeSetAndMultiDOM.xsl... ERROR: 'No more DTM IDs are available'
> [apply] [java] XSLT Exception: com.sun.org.apache.xml.internal.dtm.DTMException: No more DTM IDs are available
> [apply] [echo]
> [apply] [echo] Test Sun Java 1.6.0_05 with latest Xalan (SVN revision 584164)
> [apply] [java] Testing DOMLeak-1-ResultTreeInVariable.xsl... ERROR: 'No more DTM IDs are available'
> [apply] [java] XSLT Exception: org.apache.xml.dtm.DTMException: No more DTM IDs are available
> [apply] [java] Testing DOMLeak-2-ResultTreeInCallParameter.xsl... ERROR: 'No more DTM IDs are available'
> [apply] [java] XSLT Exception: org.apache.xml.dtm.DTMException: No more DTM IDs are available
> [apply] [java] Testing DOMLeak-3-ResultTreeInApplyParameter.xsl... ERROR: 'No more DTM IDs are available'
> [apply] [java] XSLT Exception: org.apache.xml.dtm.DTMException: No more DTM IDs are available
> [apply] [java] Testing DOMLeak-4-NodeSetAndMultiDOM.xsl... ERROR: 'No more DTM IDs are available'
> [apply] [java] XSLT Exception: org.apache.xml.dtm.DTMException: No more DTM IDs are available
> [apply] [echo]
> [apply] [echo] Test Sun Java 1.6.0_05 with fixed Xalan
> [apply] [java] Testing DOMLeak-1-ResultTreeInVariable.xsl... Ok.
> [apply] [java] Testing DOMLeak-2-ResultTreeInCallParameter.xsl... Ok.
> [apply] [java] Testing DOMLeak-3-ResultTreeInApplyParameter.xsl... Ok.
> [apply] [java] Testing DOMLeak-4-NodeSetAndMultiDOM.xsl... Ok.
> [apply] BUILD SUCCESSFUL
> [apply] Total time: 1 minute 42 seconds
> BUILD SUCCESSFUL
> Total time: 5 minutes 22 seconds
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[jira] Commented: (XALANJ-2439) [PATCH] XSLTC resource leak causes
'No more DTM IDs are available' error
Posted by "Martin von Gagern (JIRA)" <xa...@xml.apache.org>.
[ https://issues.apache.org/jira/browse/XALANJ-2439?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12736166#action_12736166 ]
Martin von Gagern commented on XALANJ-2439:
-------------------------------------------
When do you release "temporary" result trees?
Are you sure that there is no way a reference to such a temporary node may still be referenced somewhere at that time?
Have you considered variables and parameters?
Functions transforming nodesets into other nodesets?
Could keys or some similar construct get a hand on such temporary nodes and store them longer than expected?
Will generated nodes included in the output be available for all output formats, especially both SAX and DOM?
I don't feel too well about the way this whole DTM stuff is implemented, and I can see the kind of problem you run into here. I'm a bit surprised that it should be possible to deal with this issue in the kind of patch you wrote, though, as opposed to a complete redesign. Haven't had a deeper look yet, and I'm not an official developer in any case, only collecting patches for my own uses, but it sounds too good to be true.
> [PATCH] XSLTC resource leak causes 'No more DTM IDs are available' error
> ------------------------------------------------------------------------
>
> Key: XALANJ-2439
> URL: https://issues.apache.org/jira/browse/XALANJ-2439
> Project: XalanJ2
> Issue Type: Bug
> Components: XSLTC
> Affects Versions: The Latest Development Code
> Environment: Linux and Windows XP with Sun JRE 1.5.0_15 and 1.6.0_05
> Reporter: Helge Schulz
> Priority: Minor
> Fix For: The Latest Development Code
>
> Attachments: DOMLeak-4-NodeSetAndMultiDOM.xsl, DOMLeak-Xalan-SVN-r584164.patch, DOMLeak-XSLT-Test-1.0.jar
>
> Original Estimate: 4h
> Remaining Estimate: 4h
>
> The Xalan XSLT compiler (XSLTC) has several resource leaks in handling
> result tree fragments in XSLT variables and parameters. If a variable
> or parameter declaration contains XML elements, a new DOM tree is created
> and a new internal integer id is reserved for it. The garbage collector can
> never retrieve this DOM tree, because the id registration holds a reference
> to it. This bug prevents the transformation of large input files, because
> complex templates creates many result tree fragments and exceeds often the
> absolute limit of possible DOM trees in XSLTC (2^16 = 65535). If this
> limit is reached, XSLTC throws the following exception:
> DTMException: No more DTM IDs are available
> The attached patch adds a new release method to the DOM interface and calls
> it, when the scope of a variable or parameter is leaved.
> You can test this patch with the attached JAR file. This file can be
> called with
> java -Xmx800M -jar DOMLeak-XSLT-Test-X.Y.jar
> This file contains four test style sheets with expected output files.
> This bug exists also in *all* Sun JRE 1.5 and 1.6 versions, because the
> Xalan XSLTC source code is used in the 'com.sun.org.apache.xalan.internal'
> packages. The attached test JAR file contains also a patch for the current
> Sun JRE version 1.6.0_5 and a fix JAR file to be installed into the
> '../jre/lib/endorsed' directory of the JRE installation.
> Please add the attached test files to the Xalan test suite. I have
> released them under Apache license version 2.0.
> Helge Schulz - http://OpenSHORE.org
> ----------
> Here is the output of running my test cases with several Java version:
> test:
> apply-with-all-versions:
> [apply] Buildfile: build.xml
> [apply] test-java:
> [apply] [echo] Test Sun Java 1.4.2_17 with integrated XSLT
> [apply] [java] Testing DOMLeak-1-ResultTreeInVariable.xsl... Ok.
> [apply] [java] Testing DOMLeak-2-ResultTreeInCallParameter.xsl... Ok.
> [apply] [java] Testing DOMLeak-3-ResultTreeInApplyParameter.xsl... Ok.
> [apply] [java] Testing DOMLeak-4-NodeSetAndMultiDOM.xsl... Ok.
> [apply] [echo]
> [apply] [echo] Test Sun Java 1.4.2_17 with latest Xalan (SVN revision 584164)
> [apply] [java] Testing DOMLeak-1-ResultTreeInVariable.xsl... ERROR: 'No more DTM IDs are available'
> [apply] [java] XSLT Exception: org.apache.xml.dtm.DTMException: No more DTM IDs are available
> [apply] [java] Testing DOMLeak-2-ResultTreeInCallParameter.xsl... ERROR: 'No more DTM IDs are available'
> [apply] [java] XSLT Exception: org.apache.xml.dtm.DTMException: No more DTM IDs are available
> [apply] [java] Testing DOMLeak-3-ResultTreeInApplyParameter.xsl... ERROR: 'No more DTM IDs are available'
> [apply] [java] XSLT Exception: org.apache.xml.dtm.DTMException: No more DTM IDs are available
> [apply] [java] Testing DOMLeak-4-NodeSetAndMultiDOM.xsl... ERROR: 'No more DTM IDs are available'
> [apply] [java] XSLT Exception: org.apache.xml.dtm.DTMException: No more DTM IDs are available
> [apply] [echo]
> [apply] [echo] Test Sun Java 1.4.2_17 with fixed Xalan
> [apply] [java] Testing DOMLeak-1-ResultTreeInVariable.xsl... Ok.
> [apply] [java] Testing DOMLeak-2-ResultTreeInCallParameter.xsl... Ok.
> [apply] [java] Testing DOMLeak-3-ResultTreeInApplyParameter.xsl... Ok.
> [apply] [java] Testing DOMLeak-4-NodeSetAndMultiDOM.xsl... Ok.
> [apply] BUILD SUCCESSFUL
> [apply] Total time: 1 minute 21 seconds
> [apply] Buildfile: build.xml
> [apply] test-java:
> [apply] [echo] Test Sun Java 1.5.0_15 with integrated XSLT
> [apply] [java] Testing DOMLeak-1-ResultTreeInVariable.xsl... ERROR: 'No more DTM IDs are available'
> [apply] [java] XSLT Exception: com.sun.org.apache.xml.internal.dtm.DTMException: No more DTM IDs are available
> [apply] [java] Testing DOMLeak-2-ResultTreeInCallParameter.xsl... ERROR: 'No more DTM IDs are available'
> [apply] [java] XSLT Exception: com.sun.org.apache.xml.internal.dtm.DTMException: No more DTM IDs are available
> [apply] [java] Testing DOMLeak-3-ResultTreeInApplyParameter.xsl... ERROR: 'No more DTM IDs are available'
> [apply] [java] XSLT Exception: com.sun.org.apache.xml.internal.dtm.DTMException: No more DTM IDs are available
> [apply] [java] Testing DOMLeak-4-NodeSetAndMultiDOM.xsl... ERROR: 'No more DTM IDs are available'
> [apply] [java] XSLT Exception: com.sun.org.apache.xml.internal.dtm.DTMException: No more DTM IDs are available
> [apply] [echo]
> [apply] [echo] Test Sun Java 1.5.0_15 with latest Xalan (SVN revision 584164)
> [apply] [java] Testing DOMLeak-1-ResultTreeInVariable.xsl... ERROR: 'No more DTM IDs are available'
> [apply] [java] XSLT Exception: org.apache.xml.dtm.DTMException: No more DTM IDs are available
> [apply] [java] Testing DOMLeak-2-ResultTreeInCallParameter.xsl... ERROR: 'No more DTM IDs are available'
> [apply] [java] XSLT Exception: org.apache.xml.dtm.DTMException: No more DTM IDs are available
> [apply] [java] Testing DOMLeak-3-ResultTreeInApplyParameter.xsl... ERROR: 'No more DTM IDs are available'
> [apply] [java] XSLT Exception: org.apache.xml.dtm.DTMException: No more DTM IDs are available
> [apply] [java] Testing DOMLeak-4-NodeSetAndMultiDOM.xsl... ERROR: 'No more DTM IDs are available'
> [apply] [java] XSLT Exception: org.apache.xml.dtm.DTMException: No more DTM IDs are available
> [apply] [echo]
> [apply] [echo] Test Sun Java 1.5.0_15 with fixed Xalan
> [apply] [java] Testing DOMLeak-1-ResultTreeInVariable.xsl... Ok.
> [apply] [java] Testing DOMLeak-2-ResultTreeInCallParameter.xsl... Ok.
> [apply] [java] Testing DOMLeak-3-ResultTreeInApplyParameter.xsl... Ok.
> [apply] [java] Testing DOMLeak-4-NodeSetAndMultiDOM.xsl... Ok.
> [apply] BUILD SUCCESSFUL
> [apply] Total time: 2 minutes 13 seconds
> [apply] Buildfile: build.xml
> [apply] test-java:
> [apply] [echo] Test Sun Java 1.6.0_05 with integrated XSLT
> [apply] [java] Testing DOMLeak-1-ResultTreeInVariable.xsl... ERROR: 'No more DTM IDs are available'
> [apply] [java] XSLT Exception: com.sun.org.apache.xml.internal.dtm.DTMException: No more DTM IDs are available
> [apply] [java] Testing DOMLeak-2-ResultTreeInCallParameter.xsl... ERROR: 'No more DTM IDs are available'
> [apply] [java] XSLT Exception: com.sun.org.apache.xml.internal.dtm.DTMException: No more DTM IDs are available
> [apply] [java] Testing DOMLeak-3-ResultTreeInApplyParameter.xsl... ERROR: 'No more DTM IDs are available'
> [apply] [java] XSLT Exception: com.sun.org.apache.xml.internal.dtm.DTMException: No more DTM IDs are available
> [apply] [java] Testing DOMLeak-4-NodeSetAndMultiDOM.xsl... ERROR: 'No more DTM IDs are available'
> [apply] [java] XSLT Exception: com.sun.org.apache.xml.internal.dtm.DTMException: No more DTM IDs are available
> [apply] [echo]
> [apply] [echo] Test Sun Java 1.6.0_05 with latest Xalan (SVN revision 584164)
> [apply] [java] Testing DOMLeak-1-ResultTreeInVariable.xsl... ERROR: 'No more DTM IDs are available'
> [apply] [java] XSLT Exception: org.apache.xml.dtm.DTMException: No more DTM IDs are available
> [apply] [java] Testing DOMLeak-2-ResultTreeInCallParameter.xsl... ERROR: 'No more DTM IDs are available'
> [apply] [java] XSLT Exception: org.apache.xml.dtm.DTMException: No more DTM IDs are available
> [apply] [java] Testing DOMLeak-3-ResultTreeInApplyParameter.xsl... ERROR: 'No more DTM IDs are available'
> [apply] [java] XSLT Exception: org.apache.xml.dtm.DTMException: No more DTM IDs are available
> [apply] [java] Testing DOMLeak-4-NodeSetAndMultiDOM.xsl... ERROR: 'No more DTM IDs are available'
> [apply] [java] XSLT Exception: org.apache.xml.dtm.DTMException: No more DTM IDs are available
> [apply] [echo]
> [apply] [echo] Test Sun Java 1.6.0_05 with fixed Xalan
> [apply] [java] Testing DOMLeak-1-ResultTreeInVariable.xsl... Ok.
> [apply] [java] Testing DOMLeak-2-ResultTreeInCallParameter.xsl... Ok.
> [apply] [java] Testing DOMLeak-3-ResultTreeInApplyParameter.xsl... Ok.
> [apply] [java] Testing DOMLeak-4-NodeSetAndMultiDOM.xsl... Ok.
> [apply] BUILD SUCCESSFUL
> [apply] Total time: 1 minute 42 seconds
> BUILD SUCCESSFUL
> Total time: 5 minutes 22 seconds
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[jira] Commented: (XALANJ-2439) [PATCH] XSLTC resource leak causes
'No more DTM IDs are available' error
Posted by "Helge Schulz (JIRA)" <xa...@xml.apache.org>.
[ https://issues.apache.org/jira/browse/XALANJ-2439?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12833559#action_12833559 ]
Helge Schulz commented on XALANJ-2439:
--------------------------------------
As I tried to explain in a comment to XALANJ-2438 my file DOMLeak-XSLT-Test-1.0.jar contained only material licensed under Apache 2.0 license, because sources in package 'sun.com.org.apache.xalan.internal' are covered exclusively by this license. But I have removed all patches for classes in this package as Henry requested to resolve all doubts.
Regards, Helge
--
Helge Schulz - http://OpenSHORE.org
> [PATCH] XSLTC resource leak causes 'No more DTM IDs are available' error
> ------------------------------------------------------------------------
>
> Key: XALANJ-2439
> URL: https://issues.apache.org/jira/browse/XALANJ-2439
> Project: XalanJ2
> Issue Type: Bug
> Components: XSLTC
> Affects Versions: The Latest Development Code
> Environment: Linux and Windows XP with Sun JRE 1.5.0_15 and 1.6.0_05
> Reporter: Helge Schulz
> Priority: Minor
> Fix For: The Latest Development Code
>
> Attachments: DOMLeak-4-NodeSetAndMultiDOM.xsl, DOMLeak-Xalan-SVN-r584164.patch, DOMLeak-XSLT-Test-1.0.jar
>
> Original Estimate: 4h
> Remaining Estimate: 4h
>
> The Xalan XSLT compiler (XSLTC) has several resource leaks in handling
> result tree fragments in XSLT variables and parameters. If a variable
> or parameter declaration contains XML elements, a new DOM tree is created
> and a new internal integer id is reserved for it. The garbage collector can
> never retrieve this DOM tree, because the id registration holds a reference
> to it. This bug prevents the transformation of large input files, because
> complex templates creates many result tree fragments and exceeds often the
> absolute limit of possible DOM trees in XSLTC (2^16 = 65535). If this
> limit is reached, XSLTC throws the following exception:
> DTMException: No more DTM IDs are available
> The attached patch adds a new release method to the DOM interface and calls
> it, when the scope of a variable or parameter is leaved.
> You can test this patch with the attached JAR file. This file can be
> called with
> java -Xmx800M -jar DOMLeak-XSLT-Test-X.Y.jar
> This file contains four test style sheets with expected output files.
> This bug exists also in *all* Sun JRE 1.5 and 1.6 versions, because the
> Xalan XSLTC source code is used in the 'com.sun.org.apache.xalan.internal'
> packages. The attached test JAR file contains also a patch for the current
> Sun JRE version 1.6.0_5 and a fix JAR file to be installed into the
> '../jre/lib/endorsed' directory of the JRE installation.
> Please add the attached test files to the Xalan test suite. I have
> released them under Apache license version 2.0.
> Helge Schulz - http://OpenSHORE.org
> ----------
> Here is the output of running my test cases with several Java version:
> test:
> apply-with-all-versions:
> [apply] Buildfile: build.xml
> [apply] test-java:
> [apply] [echo] Test Sun Java 1.4.2_17 with integrated XSLT
> [apply] [java] Testing DOMLeak-1-ResultTreeInVariable.xsl... Ok.
> [apply] [java] Testing DOMLeak-2-ResultTreeInCallParameter.xsl... Ok.
> [apply] [java] Testing DOMLeak-3-ResultTreeInApplyParameter.xsl... Ok.
> [apply] [java] Testing DOMLeak-4-NodeSetAndMultiDOM.xsl... Ok.
> [apply] [echo]
> [apply] [echo] Test Sun Java 1.4.2_17 with latest Xalan (SVN revision 584164)
> [apply] [java] Testing DOMLeak-1-ResultTreeInVariable.xsl... ERROR: 'No more DTM IDs are available'
> [apply] [java] XSLT Exception: org.apache.xml.dtm.DTMException: No more DTM IDs are available
> [apply] [java] Testing DOMLeak-2-ResultTreeInCallParameter.xsl... ERROR: 'No more DTM IDs are available'
> [apply] [java] XSLT Exception: org.apache.xml.dtm.DTMException: No more DTM IDs are available
> [apply] [java] Testing DOMLeak-3-ResultTreeInApplyParameter.xsl... ERROR: 'No more DTM IDs are available'
> [apply] [java] XSLT Exception: org.apache.xml.dtm.DTMException: No more DTM IDs are available
> [apply] [java] Testing DOMLeak-4-NodeSetAndMultiDOM.xsl... ERROR: 'No more DTM IDs are available'
> [apply] [java] XSLT Exception: org.apache.xml.dtm.DTMException: No more DTM IDs are available
> [apply] [echo]
> [apply] [echo] Test Sun Java 1.4.2_17 with fixed Xalan
> [apply] [java] Testing DOMLeak-1-ResultTreeInVariable.xsl... Ok.
> [apply] [java] Testing DOMLeak-2-ResultTreeInCallParameter.xsl... Ok.
> [apply] [java] Testing DOMLeak-3-ResultTreeInApplyParameter.xsl... Ok.
> [apply] [java] Testing DOMLeak-4-NodeSetAndMultiDOM.xsl... Ok.
> [apply] BUILD SUCCESSFUL
> [apply] Total time: 1 minute 21 seconds
> [apply] Buildfile: build.xml
> [apply] test-java:
> [apply] [echo] Test Sun Java 1.5.0_15 with integrated XSLT
> [apply] [java] Testing DOMLeak-1-ResultTreeInVariable.xsl... ERROR: 'No more DTM IDs are available'
> [apply] [java] XSLT Exception: com.sun.org.apache.xml.internal.dtm.DTMException: No more DTM IDs are available
> [apply] [java] Testing DOMLeak-2-ResultTreeInCallParameter.xsl... ERROR: 'No more DTM IDs are available'
> [apply] [java] XSLT Exception: com.sun.org.apache.xml.internal.dtm.DTMException: No more DTM IDs are available
> [apply] [java] Testing DOMLeak-3-ResultTreeInApplyParameter.xsl... ERROR: 'No more DTM IDs are available'
> [apply] [java] XSLT Exception: com.sun.org.apache.xml.internal.dtm.DTMException: No more DTM IDs are available
> [apply] [java] Testing DOMLeak-4-NodeSetAndMultiDOM.xsl... ERROR: 'No more DTM IDs are available'
> [apply] [java] XSLT Exception: com.sun.org.apache.xml.internal.dtm.DTMException: No more DTM IDs are available
> [apply] [echo]
> [apply] [echo] Test Sun Java 1.5.0_15 with latest Xalan (SVN revision 584164)
> [apply] [java] Testing DOMLeak-1-ResultTreeInVariable.xsl... ERROR: 'No more DTM IDs are available'
> [apply] [java] XSLT Exception: org.apache.xml.dtm.DTMException: No more DTM IDs are available
> [apply] [java] Testing DOMLeak-2-ResultTreeInCallParameter.xsl... ERROR: 'No more DTM IDs are available'
> [apply] [java] XSLT Exception: org.apache.xml.dtm.DTMException: No more DTM IDs are available
> [apply] [java] Testing DOMLeak-3-ResultTreeInApplyParameter.xsl... ERROR: 'No more DTM IDs are available'
> [apply] [java] XSLT Exception: org.apache.xml.dtm.DTMException: No more DTM IDs are available
> [apply] [java] Testing DOMLeak-4-NodeSetAndMultiDOM.xsl... ERROR: 'No more DTM IDs are available'
> [apply] [java] XSLT Exception: org.apache.xml.dtm.DTMException: No more DTM IDs are available
> [apply] [echo]
> [apply] [echo] Test Sun Java 1.5.0_15 with fixed Xalan
> [apply] [java] Testing DOMLeak-1-ResultTreeInVariable.xsl... Ok.
> [apply] [java] Testing DOMLeak-2-ResultTreeInCallParameter.xsl... Ok.
> [apply] [java] Testing DOMLeak-3-ResultTreeInApplyParameter.xsl... Ok.
> [apply] [java] Testing DOMLeak-4-NodeSetAndMultiDOM.xsl... Ok.
> [apply] BUILD SUCCESSFUL
> [apply] Total time: 2 minutes 13 seconds
> [apply] Buildfile: build.xml
> [apply] test-java:
> [apply] [echo] Test Sun Java 1.6.0_05 with integrated XSLT
> [apply] [java] Testing DOMLeak-1-ResultTreeInVariable.xsl... ERROR: 'No more DTM IDs are available'
> [apply] [java] XSLT Exception: com.sun.org.apache.xml.internal.dtm.DTMException: No more DTM IDs are available
> [apply] [java] Testing DOMLeak-2-ResultTreeInCallParameter.xsl... ERROR: 'No more DTM IDs are available'
> [apply] [java] XSLT Exception: com.sun.org.apache.xml.internal.dtm.DTMException: No more DTM IDs are available
> [apply] [java] Testing DOMLeak-3-ResultTreeInApplyParameter.xsl... ERROR: 'No more DTM IDs are available'
> [apply] [java] XSLT Exception: com.sun.org.apache.xml.internal.dtm.DTMException: No more DTM IDs are available
> [apply] [java] Testing DOMLeak-4-NodeSetAndMultiDOM.xsl... ERROR: 'No more DTM IDs are available'
> [apply] [java] XSLT Exception: com.sun.org.apache.xml.internal.dtm.DTMException: No more DTM IDs are available
> [apply] [echo]
> [apply] [echo] Test Sun Java 1.6.0_05 with latest Xalan (SVN revision 584164)
> [apply] [java] Testing DOMLeak-1-ResultTreeInVariable.xsl... ERROR: 'No more DTM IDs are available'
> [apply] [java] XSLT Exception: org.apache.xml.dtm.DTMException: No more DTM IDs are available
> [apply] [java] Testing DOMLeak-2-ResultTreeInCallParameter.xsl... ERROR: 'No more DTM IDs are available'
> [apply] [java] XSLT Exception: org.apache.xml.dtm.DTMException: No more DTM IDs are available
> [apply] [java] Testing DOMLeak-3-ResultTreeInApplyParameter.xsl... ERROR: 'No more DTM IDs are available'
> [apply] [java] XSLT Exception: org.apache.xml.dtm.DTMException: No more DTM IDs are available
> [apply] [java] Testing DOMLeak-4-NodeSetAndMultiDOM.xsl... ERROR: 'No more DTM IDs are available'
> [apply] [java] XSLT Exception: org.apache.xml.dtm.DTMException: No more DTM IDs are available
> [apply] [echo]
> [apply] [echo] Test Sun Java 1.6.0_05 with fixed Xalan
> [apply] [java] Testing DOMLeak-1-ResultTreeInVariable.xsl... Ok.
> [apply] [java] Testing DOMLeak-2-ResultTreeInCallParameter.xsl... Ok.
> [apply] [java] Testing DOMLeak-3-ResultTreeInApplyParameter.xsl... Ok.
> [apply] [java] Testing DOMLeak-4-NodeSetAndMultiDOM.xsl... Ok.
> [apply] BUILD SUCCESSFUL
> [apply] Total time: 1 minute 42 seconds
> BUILD SUCCESSFUL
> Total time: 5 minutes 22 seconds
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