Examples with MM_HeapRegionDescriptorVLHGCPointer com.ibm.j9ddr.vm29.pointer.generated.MM_HeapRegionDescriptorVLHGCPointer used on opensource projects

Example 1 with MM_HeapRegionDescriptorVLHGCPointer

use of com.ibm.j9ddr.vm29.pointer.generated.MM_HeapRegionDescriptorVLHGCPointer in project openj9 by eclipse.

the class ACCommand method dumpACForObject.

public void dumpACForObject(J9JavaVMPointer vm, StructurePointer objectPointer, PrintStream out) throws CorruptDataException {
    if (GCExtensions.isVLHGC()) {
        if ((null != objectPointer) && !objectPointer.isNull()) {
            /* get the object's region */
            GCHeapRegionDescriptor region = heapRegionManager.regionDescriptorForAddress(objectPointer);
            if (null != region) {
                MM_HeapRegionDescriptorVLHGCPointer vlhgcRegionPointer = MM_HeapRegionDescriptorVLHGCPointer.cast(region.getHeapRegionDescriptorPointer());
                /* get the region's owning allocation context */
                StructurePointer act = vlhgcRegionPointer._allocateData()._owningContext().getAsRuntimeType();
                out.println("Object's owning context: " + act.formatShortInteractive());
            }
        }
    }
}

Example 2 with MM_HeapRegionDescriptorVLHGCPointer

use of com.ibm.j9ddr.vm29.pointer.generated.MM_HeapRegionDescriptorVLHGCPointer in project openj9 by eclipse.

the class ACCommand method dumpOwnedRegions.

private void dumpOwnedRegions(J9JavaVMPointer vm, MM_AllocationContextPointer allocationContext, PrintStream out) throws CorruptDataException {
    if (GCExtensions.isVLHGC()) {
        Table table = new Table("Regions Owned by AC " + allocationContext.getHexAddress());
        table.row("Region", "containsObjects");
        GCHeapRegionIterator regionIterator = GCHeapRegionIterator.from();
        while (regionIterator.hasNext()) {
            GCHeapRegionDescriptor region = regionIterator.next();
            MM_HeapRegionDescriptorVLHGCPointer vlhgcRegion = MM_HeapRegionDescriptorVLHGCPointer.cast(region.getHeapRegionDescriptorPointer());
            MM_AllocationContextTarokPointer currentAllocationContextTarok = vlhgcRegion._allocateData()._owningContext();
            if (currentAllocationContextTarok.eq(allocationContext)) {
                table.row("!mm_heapregiondescriptorvlhgc " + vlhgcRegion.getHexAddress(), Boolean.toString(region.containsObjects()));
            }
        }
        table.render(out);
    }
}

Example 3 with MM_HeapRegionDescriptorVLHGCPointer

use of com.ibm.j9ddr.vm29.pointer.generated.MM_HeapRegionDescriptorVLHGCPointer in project openj9 by eclipse.

the class ObjectRefsCommand method dumpHeapReferences.

/**
 * Write the on heap references stanza to the output stream.
 * @param vm
 * @param targetObject
 * @param out
 * @throws CorruptDataException
 */
private void dumpHeapReferences(J9JavaVMPointer vm, J9ObjectPointer targetObject, PrintStream out) throws CorruptDataException {
    if (GCExtensions.isVLHGC()) {
        Table table = new Table("On Heap References");
        table.row("object (!j9object)", "field (!j9object)", "!mm_heapregiondescriptorvlhgc", "AC (type)");
        /* iterate over all heap regions */
        GCHeapRegionIterator regionIterator = GCHeapRegionIterator.from();
        while (regionIterator.hasNext()) {
            GCHeapRegionDescriptor region = regionIterator.next();
            if (region.containsObjects()) {
                MM_HeapRegionDescriptorVLHGCPointer vlhgcRegion = MM_HeapRegionDescriptorVLHGCPointer.cast(region.getHeapRegionDescriptorPointer());
                MM_AllocationContextTarokPointer currentAllocationContextTarok = vlhgcRegion._allocateData()._owningContext();
                /* iterate over all objects in region */
                GCObjectHeapIterator heapObjectIterator = region.objectIterator(true, false);
                while (heapObjectIterator.hasNext()) {
                    J9ObjectPointer currentObject = heapObjectIterator.next();
                    /* Iterate over the object's fields and list any that point at @ref targetObject */
                    GCObjectIterator fieldIterator = GCObjectIterator.fromJ9Object(currentObject, false);
                    while (fieldIterator.hasNext()) {
                        J9ObjectPointer currentTargetObject = fieldIterator.next();
                        if (currentTargetObject.eq(targetObject)) {
                            /* found a reference to our targetObject, add it to the table */
                            J9ClassPointer objectClass = J9ObjectHelper.clazz(currentObject);
                            String objectClassString = J9ClassHelper.getJavaName(objectClass);
                            table.row(currentObject.getHexAddress() + " //" + objectClassString, currentTargetObject.getHexAddress(), vlhgcRegion.getHexAddress(), currentAllocationContextTarok.getHexAddress() + " (" + currentAllocationContextTarok._allocationContextType() + ")");
                        }
                    }
                }
            }
        }
        table.render(out);
    }
}