[rvm-research] Fixing size of metadata space?

Hello,

         I'm trying to compare two different collectors that use a
different amount of meta-data, and as part of that I wanted to fix the size
of the metadata space. It tried to do this by chaning the call where the
metadata space is created in Plan, from:

  metaDataSpace = new RawPageSpace("meta",
      VMRequest.create());

To:
   metaDataSpace = new RawPageSpace("meta",
      VMRequest.create(10));

    In order to create a VMRequest of 10 MB, and give the metadata space an
initial size of 10 MB. However, this causes a null pointer exeception
during the build process (stack trace below).   Am I going about this the
wrong way?

         Thanks,
              Nathan Ricci, Tufts University


      java.lang.ExceptionInInitializerError
        at
org.jikesrvm.mm.mminterface.MemoryManager.getAllocationSite(MemoryManager.java:335)
        at
org.jikesrvm.compilers.baseline.ia32.BaselineCompilerImpl.emit_resolved_new(BaselineCompilerImpl.java:3373)
        at
org.jikesrvm.compilers.baseline.TemplateCompilerFramework.genCode(TemplateCompilerFramework.java:1593)
        at
org.jikesrvm.compilers.baseline.BaselineCompiler.compile(BaselineCompiler.java:250)
        at
org.jikesrvm.compilers.baseline.BaselineCompiledMethod.compile(BaselineCompiledMethod.java:165)
        at
org.jikesrvm.compilers.baseline.BaselineCompiler.compile(BaselineCompiler.java:173)
        at
org.jikesrvm.compilers.baseline.BaselineBootImageCompiler.compileMethod(BaselineBootImageCompiler.java:52)
        at
org.jikesrvm.compilers.common.BootImageCompiler.compile(BootImageCompiler.java:75)
        at
org.jikesrvm.compilers.common.BootImageCompiler.compile(BootImageCompiler.java:80)
        at
org.jikesrvm.classloader.NormalMethod.genCode(NormalMethod.java:180)
        at org.jikesrvm.classloader.RVMMethod.compile(RVMMethod.java:729)
        at
org.jikesrvm.classloader.RVMMethod.getCurrentEntryCodeArray(RVMMethod.java:713)
        at org.jikesrvm.classloader.RVMClass.instantiate(RVMClass.java:1436)
        at org.jikesrvm.classloader.RVMClass.instantiate(RVMClass.java:1413)
        at
org.jikesrvm.tools.bootImageWriter.BootImageWorker.run(BootImageWorker.java:44)
        at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1146)
        at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
        at java.lang.Thread.run(Thread.java:701)
      Caused by: java.lang.NullPointerException
        at org.mmtk.policy.Space.reservedPages(Space.java:226)
        at org.mmtk.policy.Space.getPagesReserved(Space.java:501)
        at org.mmtk.policy.Space.printUsage(Space.java:640)
        at org.mmtk.policy.Space.printUsagePages(Space.java:519)
        at org.jikesrvm.mm.mmtk.Assert.fail(Assert.java:45)
        at org.mmtk.policy.Space.<init>(Space.java:152)
        at org.mmtk.policy.RawPageSpace.<init>(RawPageSpace.java:43)
        at org.mmtk.plan.Plan.<clinit>(Plan.java:162)

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