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Posted to dev@tomcat.apache.org by bu...@apache.org on 2015/11/23 06:52:46 UTC
[Bug 58635] New: Break point at java agent code is ignored during
catalina.sh jpda run
https://bz.apache.org/bugzilla/show_bug.cgi?id=58635
Bug ID: 58635
Summary: Break point at java agent code is ignored during
catalina.sh jpda run
Product: Tomcat 9
Version: 9.0.0.M1
Hardware: All
OS: All
Status: NEW
Severity: normal
Priority: P2
Component: Catalina
Assignee: dev@tomcat.apache.org
Reporter: huxing.zhang@gmail.com
Steps to reproduce this issue:
1. prepare a simple java agent, named TestJavaAgent
2. add a break point to the premain method of TestJavaAgent
3. modify bin/setenv.sh:
export JPDA_SUSPEND=y
export CATALINA_OPTS="$CATALINA_OPTS -javaagent:/path/to/test/java/agent.jar"
4. start tomcat in debugging mode:
bin/catalina.sh jpda run
Expected behavior:
The tomcat prompts "Listening for transport dt_socket at address: 8000", and
when attach a debugger to port 8000, the process stops at the break point in
premain method of TestJavaAgent
Actual behavior:
The premain method of TestJavaAgent has been executed, and then tomcat prompts
"Listening for transport dt_socket at address: 8000", the process never stopped
at the break point in premain method of TestJavaAgent
Putting $JPDA_OPTS before $CATALINA_OPTS will solve this issue:
Index: bin/catalina.sh
===================================================================
--- bin/catalina.sh (revision 1715719)
+++ bin/catalina.sh (working copy)
@@ -279,7 +279,7 @@
if [ -z "$JPDA_OPTS" ]; then
JPDA_OPTS="-agentlib:jdwp=transport=$JPDA_TRANSPORT,address=$JPDA_ADDRESS,server=y,suspend=$JPDA_SUSPEND"
fi
- CATALINA_OPTS="$CATALINA_OPTS $JPDA_OPTS"
+ CATALINA_OPTS="$JPDA_OPTS $CATALINA_OPTS"
shift
fi
Note: setting -agentlib=/path/to/agent.jar to JAVA_OPTS won't fix this issue,
neither. Because JAVA_OPTS always goes before CATALINA_OPTS.
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[Bug 58635] Break point at java agent code is ignored during
catalina.sh jpda run
Posted by bu...@apache.org.
https://bz.apache.org/bugzilla/show_bug.cgi?id=58635
--- Comment #2 from Huxing Zhang <hu...@gmail.com> ---
I've thought about it, but I am too busy to provide such a for patch for
windows. Thanks for your quick work. :)
>From next time I will consider both cases.
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[Bug 58635] Break point at java agent code is ignored during
catalina.sh jpda run
Posted by bu...@apache.org.
https://bz.apache.org/bugzilla/show_bug.cgi?id=58635
Mark Thomas <ma...@apache.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |FIXED
--- Comment #1 from Mark Thomas <ma...@apache.org> ---
Thanks for the report and patch. Do keep in mind when working on scripts that
you need to consider the Windows scripts as well.
This has been fixed in 9.0.x for 9.0.0.M2 onwards, 8.0.x for 8.0.30 onwards,
7.0.x for 7.0.66 onwards and 6.0.x for 6.0.45 onwards.
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