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comparison 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
comparison
equal deleted inserted replaced
7947:3c327c2b6782 8005:ec0c4951286c
112 /** These constants come from globalDefinitions.hpp */ 112 /** These constants come from globalDefinitions.hpp */
113 private int invocationEntryBCI; 113 private int invocationEntryBCI;
114 private int invalidOSREntryBCI; 114 private int invalidOSREntryBCI;
115 private ReversePtrs revPtrs; 115 private ReversePtrs revPtrs;
116 private VMRegImpl vmregImpl; 116 private VMRegImpl vmregImpl;
117 private int reserveForAllocationPrefetch;
117 118
118 // System.getProperties from debuggee VM 119 // System.getProperties from debuggee VM
119 private Properties sysProps; 120 private Properties sysProps;
120 121
121 // VM version strings come from Abstract_VM_Version class 122 // VM version strings come from Abstract_VM_Version class
291 Type vmVersion = db.lookupType("Abstract_VM_Version"); 292 Type vmVersion = db.lookupType("Abstract_VM_Version");
292 Address releaseAddr = vmVersion.getAddressField("_s_vm_release").getValue(); 293 Address releaseAddr = vmVersion.getAddressField("_s_vm_release").getValue();
293 vmRelease = CStringUtilities.getString(releaseAddr); 294 vmRelease = CStringUtilities.getString(releaseAddr);
294 Address vmInternalInfoAddr = vmVersion.getAddressField("_s_internal_vm_info_string").getValue(); 295 Address vmInternalInfoAddr = vmVersion.getAddressField("_s_internal_vm_info_string").getValue();
295 vmInternalInfo = CStringUtilities.getString(vmInternalInfoAddr); 296 vmInternalInfo = CStringUtilities.getString(vmInternalInfoAddr);
297
298 CIntegerType intType = (CIntegerType) db.lookupType("int");
299 CIntegerField reserveForAllocationPrefetchField = vmVersion.getCIntegerField("_reserve_for_allocation_prefetch");
300 reserveForAllocationPrefetch = (int)reserveForAllocationPrefetchField.getCInteger(intType);
296 } catch (Exception exp) { 301 } catch (Exception exp) {
297 throw new RuntimeException("can't determine target's VM version : " + exp.getMessage()); 302 throw new RuntimeException("can't determine target's VM version : " + exp.getMessage());
298 } 303 }
299 304
300 checkVMVersion(vmRelease); 305 checkVMVersion(vmRelease);
776 // returns null, if not available. 781 // returns null, if not available.
777 public String getVMInternalInfo() { 782 public String getVMInternalInfo() {
778 return vmInternalInfo; 783 return vmInternalInfo;
779 } 784 }
780 785
786 public int getReserveForAllocationPrefetch() {
787 return reserveForAllocationPrefetch;
788 }
789
781 public boolean isSharingEnabled() { 790 public boolean isSharingEnabled() {
782 if (sharingEnabled == null) { 791 if (sharingEnabled == null) {
783 Flag flag = getCommandLineFlag("UseSharedSpaces"); 792 Flag flag = getCommandLineFlag("UseSharedSpaces");
784 sharingEnabled = (flag == null)? Boolean.FALSE : 793 sharingEnabled = (flag == null)? Boolean.FALSE :
785 (flag.getBool()? Boolean.TRUE: Boolean.FALSE); 794 (flag.getBool()? Boolean.TRUE: Boolean.FALSE);