[Ikvm-developers] Exception launching Saxon from .NET web application but not from windows application on same machine

[Jason B. <jas...@ya...>]

One particular IIS server we have for in-house testing is failing to instantiate a Saxon processor object. Other IIS servers we have deployed the web application on work fine. 

I created a basic web app to instantiate the processor with the following code behind:
Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
    Response.Write("Tryingto instantiate SaxonProcessor...")
   Try
        Dim SaxonProcessor As Saxon.Api.Processor = New Saxon.Api.Processor()
        Response.Write("Saxon instantiated successfully!")
    Catch ex As Exception
        Response.Write("Error: " & ex.Message & ex.StackTrace)
    End Try
End Sub
 
This is the exception that I get when the page loads: 
 
Trying to instantiate SaxonProcessor...
System.TypeInitializationException: The 
type initializer for 'IKVM.NativeCode.java.lang.Thread' threw an exception. 
---> System.Reflection.TargetInvocationException: Exception has been thrown 
by the target of an invocation. ---> System.TypeInitializationException: The 
type initializer for 'java.io.BufferedInputStream' threw an exception. ---> 
java.lang.RuntimeException: java.lang.IllegalAccessException: Class 
java.util.concurrent.atomic.AtomicReferenceFieldUpdater can not access a member 
of class java.io.BufferedInputStream with modifiers "volatile" ---> 
java.lang.IllegalAccessException: Class 
java.util.concurrent.atomic.AtomicReferenceFieldUpdater can not access a member 
of class java.io.BufferedInputStream with modifiers "volatile" at 
sun.reflect.misc.ReflectUtil.ensureMemberAccess(Class currentClass, Class 
memberClass, Object target, Int32 modifiers) at 
java.util.concurrent.atomic.AtomicReferenceFieldUpdater.AtomicReferenceFieldUpdaterImpl..ctor(Class 
, Class , String ) --- End of inner exception stack trace --- at 
java.util.concurrent.atomic.AtomicReferenceFieldUpdater.AtomicReferenceFieldUpdaterImpl..ctor(Class 
, Class , String ) at 
java.util.concurrent.atomic.AtomicReferenceFieldUpdater.newUpdater(Class tclass, 
Class vclass, String fieldName) at java.io.BufferedInputStream..cctor() --- End 
of inner exception stack trace --- at java.io.BufferedInputStream.__() 
at java.lang.System.initializeSystemClass() --- End of inner exception stack 
trace --- at System.RuntimeMethodHandle._InvokeMethodFast(IRuntimeMethodInfo 
method, Object target, Object[] arguments, SignatureStruct& sig, 
MethodAttributes methodAttributes, RuntimeType typeOwner) at 
System.RuntimeMethodHandle.InvokeMethodFast(IRuntimeMethodInfo method, Object 
target, Object[] arguments, Signature sig, MethodAttributes methodAttributes, 
RuntimeType typeOwner) at System.Reflection.RuntimeMethodInfo.Invoke(Object obj, 
BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo 
culture, Boolean skipVisibilityChecks) at 
System.Reflection.RuntimeMethodInfo.Invoke(Object obj, BindingFlags invokeAttr, 
Binder binder, Object[] parameters, CultureInfo culture) at 
System.Reflection.MethodBase.Invoke(Object obj, Object[] parameters) at 
IKVM.NativeCode.java.lang.Thread..cctor() --- End of inner exception stack trace 
--- at IKVM.NativeCode.java.lang.Class.forName0(String name, Boolean initialize, 
Object loader) at java.lang.Class.forName(String className) at 
net.sf.saxon.dotnet.DotNetExtensionFunctionFactory.class$(String x0) at 
net.sf.saxon.dotnet.DotNetExtensionFunctionFactory..ctor(Configuration config) 
at net.sf.saxon.dotnet.DotNetPlatform.initialize(Configuration config) at 
net.sf.saxon.Configuration.init() at net.sf.saxon.Configuration..ctor() at 
Saxon.Api.Processor..ctor() at BealSaxxon._Default.Page_Load(Object sender, 
EventArgs e)

  
If I write equivalent code and execute it from a windows application and run that application from the same machine, it works fine. 


There is some factor in play between the IIS code and the windows application that I cannot figure out.