Hi Glenn,
files are written in the following sequence:
1) At startup a empty jacoco.exec file is writen to ensure that the
specified location is writable
2) Classes are dumped whenever a class is loaded
3) Execution data is written out in the JVM's shutdown hook, which
requires proper termination
This explains while files in 1) and 2) are writtem even if the JVM is
not properly terminated.
Regards,
-marc
On 24.08.15 18:22, Glenn Caccia wrote:
Hey all,
I'm trying to get code coverage for a tomcat app. I've used jacoco
before for tomcat apps and have been successful in getting reports.
My process is to attach the jacoco agent to the tomcat process, run my
tests, shut down tomcat, and then generate a report using a maven
project with the jacoco.exec and src files as the source material (see
below for agent config). With this latest tomcat app, however, after
shutting down the tomcat app, jacoco.exec has a size of 0. Despite
this, it is creating class dump files, which would seem to suggest
that it is recognizing the execution of code. Does that make any
sense? Any ideas on what would cause jacoco.exec to be empty despite
the creation of class dump files? One thing that is different about
this tomcat app compared to others is that it is a multi-module
project. Would that cause problems in this context? If yes, any
suggestions on how to work around the problem?
Thanks,
Glenn
-javaagent:${CATALINA_BASE}/webapps/tomcatAppName/WEB-INF/lib/jacocoagent.jar=output=file,destfile=${CATALINA_BASE}/logs/jacoco.exec,dumponexit=true,includes=com.mycompany.rss.mme.*,classdumpdir=${CATALINA_BASE}/logs/classes,append=false
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