Uploaded image for project: 'Groovy'
  1. Groovy
  2. GROOVY-8160

Exception when evaluating two Groovy scripts containing an enum in parallel

    Details

    • Type: Bug
    • Status: Closed
    • Priority: Major
    • Resolution: Fixed
    • Affects Version/s: 2.4.10
    • Fix Version/s: 2.4.11
    • Component/s: None
    • Labels:
      None
    • Environment:
      openjdk version "1.8.0_111"
      OpenJDK Runtime Environment (build 1.8.0_111-8u111-b14-2~bpo8+1-b14)
      OpenJDK 64-Bit Server VM (build 25.111-b14, mixed mode)

      Description

      It appears like a concurrent invocation of GroovyShell.evaluate results in a exception if the evaluated script contains an enum.

      The following code reproduces this issue:

      import groovy.lang.GroovyShell;
      
      import java.util.concurrent.ExecutorService;
      import java.util.concurrent.Executors;
      import java.util.concurrent.TimeUnit;
      
      
      public class MyReproducer {
          public static void main(String [] args) throws InterruptedException {
      
              // Uncomment this and the problem will go away
              //runScript();
      
              ExecutorService es = Executors.newFixedThreadPool(2);
              es.execute(MyReproducer::runScript);
              es.execute(MyReproducer::runScript);
              es.shutdown();
              es.awaitTermination(10, TimeUnit.SECONDS);
          }
      
          private static void runScript() {
              GroovyShell shell = new GroovyShell();
              shell.evaluate("enum MyEnum {FOO, BAR, BAZ}\nprintln MyEnum.values()");
          }
      }

      Exception thrown:

      Exception in thread "pool-1-thread-1" org.codehaus.groovy.control.MultipleCompilationErrorsException: startup failed:
      Script1.groovy: -1: unable to resolve class java$lang$Enum 
       @ line -1, column -1.
      1 error
      
      	at org.codehaus.groovy.control.ErrorCollector.failIfErrors(ErrorCollector.java:310)
      	at org.codehaus.groovy.control.CompilationUnit.applyToSourceUnits(CompilationUnit.java:958)
      	at org.codehaus.groovy.control.CompilationUnit.doPhaseOperation(CompilationUnit.java:605)
      	at org.codehaus.groovy.control.CompilationUnit.compile(CompilationUnit.java:554)
      	at groovy.lang.GroovyClassLoader.doParseClass(GroovyClassLoader.java:298)
      	at groovy.lang.GroovyClassLoader.parseClass(GroovyClassLoader.java:268)
      	at groovy.lang.GroovyShell.parseClass(GroovyShell.java:688)
      	at groovy.lang.GroovyShell.parse(GroovyShell.java:700)
      	at groovy.lang.GroovyShell.evaluate(GroovyShell.java:584)
      	at groovy.lang.GroovyShell.evaluate(GroovyShell.java:623)
      	at groovy.lang.GroovyShell.evaluate(GroovyShell.java:594)
      	at MyReproducer.runScript(MyReproducer.java:23)
      	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
      	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
      	at java.lang.Thread.run(Thread.java:745)
      Exception in thread "pool-1-thread-2" java.lang.ExceptionInInitializerError
      	at java.lang.Class.forName0(Native Method)
      	at java.lang.Class.forName(Class.java:348)
      	at org.codehaus.groovy.runtime.callsite.CallSiteArray$1.run(CallSiteArray.java:68)
      	at org.codehaus.groovy.runtime.callsite.CallSiteArray$1.run(CallSiteArray.java:65)
      	at java.security.AccessController.doPrivileged(Native Method)
      	at org.codehaus.groovy.runtime.callsite.CallSiteArray.createCallStaticSite(CallSiteArray.java:65)
      	at org.codehaus.groovy.runtime.callsite.CallSiteArray.createCallSite(CallSiteArray.java:162)
      	at org.codehaus.groovy.runtime.callsite.CallSiteArray.defaultCall(CallSiteArray.java:48)
      	at org.codehaus.groovy.runtime.callsite.AbstractCallSite.call(AbstractCallSite.java:113)
      	at org.codehaus.groovy.runtime.callsite.AbstractCallSite.call(AbstractCallSite.java:117)
      	at Script1.run(Script1.groovy:2)
      	at groovy.lang.GroovyShell.evaluate(GroovyShell.java:585)
      	at groovy.lang.GroovyShell.evaluate(GroovyShell.java:623)
      	at groovy.lang.GroovyShell.evaluate(GroovyShell.java:594)
      	at MyReproducer.runScript(MyReproducer.java:23)
      	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
      	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
      	at java.lang.Thread.run(Thread.java:745)
      Caused by: java.lang.TypeNotPresentException: Type java$lang$Enum not present
      	at sun.reflect.generics.factory.CoreReflectionFactory.makeNamedType(CoreReflectionFactory.java:117)
      	at sun.reflect.generics.visitor.Reifier.visitClassTypeSignature(Reifier.java:125)
      	at sun.reflect.generics.tree.ClassTypeSignature.accept(ClassTypeSignature.java:49)
      	at sun.reflect.generics.repository.ClassRepository.getSuperclass(ClassRepository.java:90)
      	at java.lang.Class.getGenericSuperclass(Class.java:777)
      	at com.sun.beans.TypeResolver.prepare(TypeResolver.java:308)
      	at com.sun.beans.TypeResolver.resolve(TypeResolver.java:185)
      	at com.sun.beans.TypeResolver.resolve(TypeResolver.java:218)
      	at com.sun.beans.TypeResolver.resolve(TypeResolver.java:169)
      	at com.sun.beans.TypeResolver.resolveInClass(TypeResolver.java:81)
      	at java.beans.FeatureDescriptor.getReturnType(FeatureDescriptor.java:370)
      	at java.beans.PropertyDescriptor.findPropertyType(PropertyDescriptor.java:648)
      	at java.beans.PropertyDescriptor.updateGenericsFor(PropertyDescriptor.java:623)
      	at java.beans.Introspector.addPropertyDescriptor(Introspector.java:605)
      	at java.beans.Introspector.addPropertyDescriptors(Introspector.java:614)
      	at java.beans.Introspector.getTargetPropertyInfo(Introspector.java:467)
      	at java.beans.Introspector.getBeanInfo(Introspector.java:428)
      	at java.beans.Introspector.getBeanInfo(Introspector.java:173)
      	at groovy.lang.MetaClassImpl$15.run(MetaClassImpl.java:3318)
      	at java.security.AccessController.doPrivileged(Native Method)
      	at groovy.lang.MetaClassImpl.addProperties(MetaClassImpl.java:3316)
      	at groovy.lang.MetaClassImpl.initialize(MetaClassImpl.java:3293)
      	at org.codehaus.groovy.reflection.ClassInfo.getMetaClassUnderLock(ClassInfo.java:260)
      	at org.codehaus.groovy.reflection.ClassInfo.getMetaClass(ClassInfo.java:302)
      	at org.codehaus.groovy.runtime.metaclass.MetaClassRegistryImpl.getMetaClass(MetaClassRegistryImpl.java:261)
      	at org.codehaus.groovy.runtime.InvokerHelper.getMetaClass(InvokerHelper.java:883)
      	at org.codehaus.groovy.runtime.callsite.CallSiteArray.createCallStaticSite(CallSiteArray.java:75)
      	at org.codehaus.groovy.runtime.callsite.CallSiteArray.defaultCallStatic(CallSiteArray.java:56)
      	at org.codehaus.groovy.runtime.callsite.AbstractCallSite.callStatic(AbstractCallSite.java:194)
      	at org.codehaus.groovy.runtime.callsite.AbstractCallSite.callStatic(AbstractCallSite.java:214)
      	at MyEnum.<clinit>(Script1.groovy)
      	... 18 more
      Caused by: java.lang.ClassNotFoundException: java$lang$Enum
      	at java.net.URLClassLoader.findClass(URLClassLoader.java:381)
      	at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
      	at groovy.lang.GroovyClassLoader.loadClass(GroovyClassLoader.java:677)
      	at groovy.lang.GroovyClassLoader$InnerLoader.loadClass(GroovyClassLoader.java:425)
      	at groovy.lang.GroovyClassLoader.loadClass(GroovyClassLoader.java:787)
      	at groovy.lang.GroovyClassLoader.loadClass(GroovyClassLoader.java:775)
      	at java.lang.Class.forName0(Native Method)
      	at java.lang.Class.forName(Class.java:348)
      	at sun.reflect.generics.factory.CoreReflectionFactory.makeNamedType(CoreReflectionFactory.java:114)
      	... 48 more

      The problem doesn't occur if a script containing an enum declaration was evaluated before. Also every once in a while everything works fine and no error occurs.

      Please note: I was unable to reproduce this problem with 2.5.0-alpha-1 but since I didn't find a mention of this bug in the changelog I figured that I should report it nevertheless.

        Attachments

          Issue Links

            Activity

              People

              • Assignee:
                paulk Paul King
                Reporter:
                mwalser Michael Walser
              • Votes:
                0 Vote for this issue
                Watchers:
                3 Start watching this issue

                Dates

                • Created:
                  Updated:
                  Resolved: