Examples with UDATA com.ibm.j9ddr.vm29.types.UDATA used on opensource projects

Example 81 with UDATA

use of com.ibm.j9ddr.vm29.types.UDATA in project openj9 by eclipse.

the class MarkMapCommand method fromBits.

protected void fromBits(String[] args, Context context, PrintStream out) throws DDRInteractiveCommandException {
    long address = CommandUtils.parsePointer(args[1], J9BuildFlags.env_data64);
    UDATAPointer markSlot = UDATAPointer.cast(address);
    UDATAPointer base = markMap.getHeapMapBits();
    UDATA maxOffset = markMap.getSlotIndexAndMask(J9ObjectPointer.cast(markMap.getHeapTop().subOffset(markMap.getObjectGrain())))[0];
    maxOffset = maxOffset.add(1);
    UDATAPointer top = base.add(maxOffset);
    if (markSlot.gte(base) && markSlot.lte(top)) {
        IDATA delta = markSlot.sub(base);
        int pageSize = markMap.getPageSize(null);
        // obviously not right for metronome
        delta = delta.mult(pageSize);
        J9ObjectPointer rangeBase = J9ObjectPointer.cast(markMap.getHeapBase().addOffset(delta));
        J9ObjectPointer rangeTop = rangeBase.addOffset(pageSize);
        out.format("Mark bits at %s corresponds to heap range %s -> %s\n", markSlot.getHexAddress(), rangeBase.getHexAddress(), rangeTop.getHexAddress());
    } else {
        out.format("Address %s is not in the mark map\n", markSlot.getHexAddress());
    }
}

Example 82 with UDATA

use of com.ibm.j9ddr.vm29.types.UDATA in project openj9 by eclipse.

the class MarkMapCommand method markBits.

protected void markBits(String[] args, Context context, PrintStream out) throws DDRInteractiveCommandException {
    try {
        long address = CommandUtils.parsePointer(args[1], J9BuildFlags.env_data64);
        J9ObjectPointer object = J9ObjectPointer.cast(address);
        J9ObjectPointer base = J9ObjectPointer.cast(address).untag(markMap.getPageSize(object) - 1);
        J9ObjectPointer top = base.addOffset(markMap.getPageSize(object));
        MarkedObject[] result = markMap.queryRange(base, top);
        if (result.length > 0) {
            if (result[0].wasRelocated()) {
                out.format("Mark bits for the compacted range %s -> %s: !j9x %s\n", base.getHexAddress(), top.getHexAddress(), result[0].markBitsSlot.getHexAddress());
            } else {
                out.format("Mark bits for the range %s -> %s: !j9x %s\n", base.getHexAddress(), top.getHexAddress(), result[0].markBitsSlot.getHexAddress());
            }
        } else {
            /* Either outside the heap, or just nothing there */
            try {
                UDATA[] indexAndMask = markMap.getSlotIndexAndMask(base);
                UDATAPointer markBitsSlot = markMap.getHeapMapBits().add(indexAndMask[0]);
                out.format("Mark bits for the range %s -> %s: !j9x %s\n", base.getHexAddress(), top.getHexAddress(), markBitsSlot.getHexAddress());
            } catch (IllegalArgumentException ex) {
                out.format("Object %s is not in the heap\n", object.getHexAddress());
            }
        }
    } catch (CorruptDataException e) {
        throw new DDRInteractiveCommandException(e);
    }
}

Example 83 with UDATA

use of com.ibm.j9ddr.vm29.types.UDATA in project openj9 by eclipse.

the class WalkInternTableCommand method printSharedTableStructure.

/**
 * typedef struct J9SharedInvariantInternTable {
 * 		UDATA (*performNodeAction)(struct J9SharedInvariantInternTable *sharedInvariantInternTable, struct J9SharedInternSRPHashTableEntry *node, UDATA action, void* userData);
 * 		UDATA flags;
 * 		omrthread_monitor_t *tableInternFxMutex;
 * 		struct J9SRPHashTable* sharedInvariantSRPHashtable;
 *		struct J9SharedInternSRPHashTableEntry* headNode;
 *		struct J9SharedInternSRPHashTableEntry* tailNode;
 *		J9SRP* sharedTailNodePtr;
 *	 	J9SRP* sharedHeadNodePtr;
 *		U_32* totalSharedNodesPtr;
 *		U_32* totalSharedWeightPtr;
 *		struct J9ClassLoader* systemClassLoader;
 *} J9SharedInvariantInternTable;
 *
 * typedef struct J9SRPHashTable {
 * 		const char* tableName;
 * 		struct J9SRPHashTableInternal* srpHashtableInternal;
 * 		UDATA (*hashFn)(void *key, void *userData);
 * 		UDATA (*hashEqualFn)(void *existingEntry,void *key, void *userData);
 * 		void (*printFn)(J9PortLibrary *portLibrary, void *key, void *userData);
 * 		struct J9PortLibrary* portLibrary;
 * 		void* functionUserData;
 * 		UDATA flags;
 * } J9SRPHashTable;
 *
 * typedef struct J9SRPHashTableInternal {
 * 		U_32 tableSize;
 * 		U_32 numberOfNodes;
 * 		U_32 entrySize;
 * 		U_32 nodeSize;
 * 		U_32 flags;
 * 		J9SRP nodes;
 * 		J9SRP nodePool;
 * } J9SRPHashTableInternal;
 *
 * Prints the info for three VM structures that are shown above and used for shared intern table.
 * 1. 	J9SharedInvariantInternTable
 * 2.	J9SRPHashTable
 * 3. 	J9SRPHashTableInternal
 *
 * @param 	out		PrintStream
 * @throws	CorruptDataException
 * @return 	void
 */
private void printSharedTableStructure(PrintStream out) throws CorruptDataException {
    J9JavaVMPointer vm = J9RASHelper.getVM(DataType.getJ9RASPointer());
    J9SharedInvariantInternTablePointer sharedInternTable;
    sharedInternTable = vm.sharedInvariantInternTable();
    if (!sharedInternTable.isNull()) {
        out.println(sharedInternTable.formatFullInteractive());
    }
    out.append("Total Shared Weight : " + sharedInternTable.totalSharedWeightPtr().at(0).longValue() + nl);
    J9SRPHashTablePointer srphashtable = sharedInternTable.sharedInvariantSRPHashtable();
    if (!srphashtable.isNull()) {
        out.println(srphashtable.formatFullInteractive());
    }
    J9SRPHashTableInternalPointer srpHashTableInternal = srphashtable.srpHashtableInternal();
    if (!srpHashTableInternal.isNull()) {
        out.println(srpHashTableInternal.formatFullInteractive());
    }
}

Example 84 with UDATA

use of com.ibm.j9ddr.vm29.types.UDATA in project openj9 by eclipse.

the class VmCheckCommand method verifyJ9ClassSubclassHierarchy.

private boolean verifyJ9ClassSubclassHierarchy(J9JavaVMPointer javaVM, PrintStream out, J9ClassPointer classPointer) throws CorruptDataException {
    int index = 0;
    UDATA rootDepth = J9ClassHelper.classDepth(classPointer);
    J9ClassPointer currentClass = classPointer;
    boolean done = false;
    while (!done) {
        J9ClassPointer nextSubclass = currentClass.subclassTraversalLink();
        if (nextSubclass.isNull()) {
            reportError(out, "class=0x%s had NULL entry in subclassTraversalLink list at index=%d following class=0x%s", Long.toHexString(classPointer.getAddress()), index, Long.toHexString(currentClass.getAddress()));
            return false;
        }
        /* Sanity check the nextSubclass. */
        if (!verifyJ9ClassHeader(javaVM, out, nextSubclass)) {
            return false;
        }
        if (J9ClassHelper.classDepth(nextSubclass).lte(rootDepth)) {
            done = true;
        } else {
            currentClass = nextSubclass;
            index++;
        }
    }
    return true;
}

Example 85 with UDATA

use of com.ibm.j9ddr.vm29.types.UDATA in project openj9 by eclipse.

the class CheckEngine method checkJ9LinkedFreeHeader.

/**
 * Verify the integrity of an GCHeapLinkedFreeHeader (hole) on the heap.
 * Checks various aspects of hole integrity.
 *
 * @param hole Pointer to the hole
 * @param segment The segment containing the pointer
 * @param checkFlags Type/level of verification
 *
 * @return @ref GCCheckWalkStageErrorCodes
 * @throws CorruptDataException
 *
 * @see @ref checkFlags
 */
private int checkJ9LinkedFreeHeader(GCHeapLinkedFreeHeader hole, GCHeapRegionDescriptor regionDesc, int checkFlags) throws CorruptDataException {
    J9ObjectPointer object = hole.getObject();
    if (ObjectModel.isSingleSlotDeadObject(object)) {
        /* TODO: we can add warning here if header of single slot hole is not standard (0s or fs) */
        return J9MODRON_GCCHK_RC_OK;
    }
    UDATA holeSize = hole.getSize();
    /* Hole size can not be 0 */
    if (holeSize.eq(0)) {
        return J9MODRON_GCCHK_RC_DEAD_OBJECT_SIZE;
    }
    /* Hole size must be aligned */
    if (holeSize.anyBitsIn(J9MODRON_GCCHK_J9OBJECT_ALIGNMENT_MASK)) {
        return J9MODRON_GCCHK_RC_DEAD_OBJECT_SIZE_NOT_ALIGNED;
    }
    UDATA regionStart = UDATA.cast(regionDesc.getLowAddress());
    UDATA regionEnd = regionStart.add(regionDesc.getSize());
    UDATA delta = regionEnd.sub(UDATA.cast(object));
    /* Hole does not fit region */
    if (delta.lt(holeSize)) {
        return J9MODRON_GCCHK_RC_INVALID_RANGE;
    }
    GCHeapLinkedFreeHeader nextHole = hole.getNext();
    J9ObjectPointer nextObject = nextHole.getObject();
    if (!nextObject.isNull()) {
        /* Next must be a hole */
        if (!ObjectModel.isDeadObject(nextObject)) {
            return J9MODRON_GCCHK_RC_DEAD_OBJECT_NEXT_IS_NOT_HOLE;
        }
        /* Next should point to the same region */
        if (regionStart.gt(UDATA.cast(nextObject)) || regionEnd.lte(UDATA.cast(nextObject))) {
            return J9MODRON_GCCHK_RC_DEAD_OBJECT_NEXT_IS_NOT_IN_REGION;
        }
        /* next should not point to inside the hole */
        if (holeSize.add(UDATA.cast(object)).gt(UDATA.cast(nextObject)) && object.lt(nextObject)) {
            return J9MODRON_GCCHK_RC_DEAD_OBJECT_NEXT_IS_POINTED_INSIDE;
        }
    }
    return J9MODRON_GCCHK_RC_OK;
}