[GROOVY-1882] NullPointerException when running two or more scripts with GroovyScriptEngine in multiple threads .

• Type: Bug
• Status: Closed
• Priority: Blocker
• Resolution: Fixed
• Affects Version/s: 1.1-beta-1
• Fix Version/s: 1.1-beta-2
• Component/s: groovy-jdk
• Environment: Windows XP SP2 / Sun JDK1.5..0_09
• Assignee: Jochen Theodorou
• Reporter: Dongyong Wang
• Created: 09/May/07 21:27
• Updated: 05/Jul/07 05:08
• Resolved: 05/Jul/07 05:08

Description

NullPointerException is always thrown when running the two scripts in multiple threads with the same GroovyScriptEngine instance.

Besides the NPE,the result is not correct sometime.

Here is a wrong result:
java.lang.NullPointerException
at groovy.util.GroovyScriptEngine$ScriptCacheEntry.access$502(GroovyScriptEngine.java:101)
at groovy.util.GroovyScriptEngine.updateCacheEntry(GroovyScriptEngine.java:358)
at groovy.util.GroovyScriptEngine.run(GroovyScriptEngine.java:395)
at GroovyConcurrentTest$ScriptRunner.run(GroovyConcurrentTest.java:63)
run :script2.groovy result:script2
run :script3.groovy result:null
run :script2.groovy result:script2
run :script2.groovy result:script2
run :script2.groovy result:script2
run :script2.groovy result:script2
run :script2.groovy result:script2
run :script2.groovy result:script2
run :script2.groovy result:script2
run :script2.groovy result:script2
run :script2.groovy result:script2
run :script2.groovy result:script2
run :script2.groovy result:script2
run :script2.groovy result:script2
run :script3.groovy result:script2
run :script3.groovy result:script2
run :script3.groovy result:script2
run :script3.groovy result:script2
run :script3.groovy result:script2
run :script3.groovy result:script2
run :script2.groovy result:script2
run :script2.groovy result:script2
run :script2.groovy result:script2
run :script2.groovy result:script2
run :script2.groovy result:script2
run :script2.groovy result:script2
run :script3.groovy result:script2
run :script3.groovy result:script2
run :script3.groovy result:script2
run :script3.groovy result:script2
run :script3.groovy result:script2
run :script3.groovy result:script2
run :script3.groovy result:script2
run :script3.groovy result:script2
run :script3.groovy result:script2
run :script3.groovy result:script2
run :script3.groovy result:script2
run :script3.groovy result:script2
run :script3.groovy result:script2

I extpect the resut looks like this:
run :script2.groovy result:script2
run :script3.groovy result:script3

Maybe the NPE is caused by the currentCacheEntry is null?