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diff agent/src/share/classes/sun/jvm/hotspot/runtime/VM.java @ 8005:ec0c4951286c

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8004710: NPG: jmap could throw sun.jvm.hotspot.types.WrongTypeException after PermGen removal Summary: When calculating live object regions, make sure that the alignment reserve, at the end of a TLAB, is excluded. Reviewed-by: jmasa, brutisso
author stefank
date Tue, 29 Jan 2013 10:51:33 +0100
parents 8e47bac5643a
children f82bcc429e8c
line wrap: on
line diff
--- a/agent/src/share/classes/sun/jvm/hotspot/runtime/VM.java	Thu Jan 03 15:03:27 2013 -0800
+++ b/agent/src/share/classes/sun/jvm/hotspot/runtime/VM.java	Tue Jan 29 10:51:33 2013 +0100
@@ -114,6 +114,7 @@
   private int          invalidOSREntryBCI;
   private ReversePtrs  revPtrs;
   private VMRegImpl    vmregImpl;
+  private int          reserveForAllocationPrefetch;
 
   // System.getProperties from debuggee VM
   private Properties   sysProps;
@@ -293,6 +294,10 @@
        vmRelease = CStringUtilities.getString(releaseAddr);
        Address vmInternalInfoAddr = vmVersion.getAddressField("_s_internal_vm_info_string").getValue();
        vmInternalInfo = CStringUtilities.getString(vmInternalInfoAddr);
+
+       CIntegerType intType = (CIntegerType) db.lookupType("int");
+       CIntegerField reserveForAllocationPrefetchField = vmVersion.getCIntegerField("_reserve_for_allocation_prefetch");
+       reserveForAllocationPrefetch = (int)reserveForAllocationPrefetchField.getCInteger(intType);
     } catch (Exception exp) {
        throw new RuntimeException("can't determine target's VM version : " + exp.getMessage());
     }
@@ -778,6 +783,10 @@
     return vmInternalInfo;
   }
 
+  public int getReserveForAllocationPrefetch() {
+    return reserveForAllocationPrefetch;
+  }
+
   public boolean isSharingEnabled() {
     if (sharingEnabled == null) {
       Flag flag = getCommandLineFlag("UseSharedSpaces");