Examples with RomClassWalker com.ibm.j9ddr.vm29.tools.ddrinteractive.RomClassWalker used on opensource projects

Example 1 with RomClassWalker

use of com.ibm.j9ddr.vm29.tools.ddrinteractive.RomClassWalker in project openj9 by eclipse.

the class DumpRomClassLinearCommand method run.

public void run(String command, String[] args, Context context, PrintStream out) throws DDRInteractiveCommandException {
    if (args.length == 0)
        throw new DDRInteractiveCommandException("This debug extension needs an address argument !dumpromclasslinear <addr>[,n]");
    String[] arguments = args[0].split(",");
    long addr = Long.decode(arguments[0]);
    long nestingThreshold;
    if (arguments.length > 1) {
        nestingThreshold = Long.decode(arguments[1]);
    } else {
        nestingThreshold = 1;
    }
    J9ROMClassPointer clazz = J9ROMClassPointer.cast(addr);
    try {
        // ROM Class 'org/apache/tomcat/util/buf/MessageBytes' at 0x0DCF9008:
        out.println(String.format("ROM Class '%s' at %s", J9UTF8Helper.stringValue(clazz.className()), clazz.getHexAddress()));
        ClassWalker classWalker = new RomClassWalker(clazz, context);
        new LinearDumper().gatherLayoutInfo(out, classWalker, nestingThreshold);
    } catch (CorruptDataException e) {
        throw new DDRInteractiveCommandException(e);
    }
}

Example 2 with RomClassWalker

use of com.ibm.j9ddr.vm29.tools.ddrinteractive.RomClassWalker in project openj9 by eclipse.

the class DumpAllRomClassLinearCommand method run.

public void run(String command, String[] args, Context context, PrintStream out) throws DDRInteractiveCommandException {
    long nestingThreashold;
    if (args.length > 1) {
        throw new DDRInteractiveCommandException("This debug extension accepts none or one argument!");
    } else if (args.length == 1) {
        nestingThreashold = Long.valueOf(args[0]);
    } else {
        nestingThreashold = 1;
    }
    try {
        J9JavaVMPointer vm = J9RASHelper.getVM(DataType.getJ9RASPointer());
        if (null != vm) {
            out.println();
            out.println("!j9javavm " + vm.getHexAddress());
        } else {
            throw new DDRInteractiveCommandException("Unable to find the VM in core dump!");
        }
        out.println();
        ROMClassesIterator iterator = new ROMClassesIterator(out, vm.classMemorySegments());
        while (iterator.hasNext()) {
            J9ROMClassPointer classPointer = iterator.next();
            out.println("!dumpromclasslinear " + classPointer.getHexAddress());
            // ROM Class 'org/apache/tomcat/util/buf/MessageBytes' at 0x0DCF9008:
            out.println(String.format("ROM Class '%s' at %s", J9UTF8Helper.stringValue(classPointer.className()), classPointer.getHexAddress()));
            out.println();
            ClassWalker classWalker = new RomClassWalker(classPointer, context);
            new LinearDumper().gatherLayoutInfo(out, classWalker, nestingThreashold);
            out.println();
        }
    } catch (CorruptDataException e1) {
        // TODO Auto-generated catch block
        e1.printStackTrace();
    }
}

Example 3 with RomClassWalker

use of com.ibm.j9ddr.vm29.tools.ddrinteractive.RomClassWalker in project openj9 by eclipse.

the class RomClassSummaryCommand method run.

public void run(String command, String[] args, Context context, PrintStream out) throws DDRInteractiveCommandException {
    try {
        boolean requiredLocal = false;
        boolean requiredShared = false;
        boolean required16bitnas = false;
        J9SharedClassConfigPointer sc = J9SharedClassConfigPointer.NULL;
        J9JavaVMPointer vm = J9RASHelper.getVM(DataType.getJ9RASPointer());
        long startAddress = 0, endAddress = 0;
        if ((args != null) && (args.length >= 1)) {
            if (args[0].equals("shared")) {
                requiredShared = true;
            } else if (args[0].equals("local")) {
                requiredLocal = true;
            } else if (args[0].equals("16bitnas")) {
                required16bitnas = true;
            } else {
                out.println("USAGE: !romclasssummary [local|shared] [16bitnas]");
                return;
            }
            if ((args.length >= 2) && (args[1].equals("16bitnas"))) {
                required16bitnas = true;
            }
            if (requiredShared || requiredLocal) {
                sc = vm.sharedClassConfig();
                if (requiredShared && sc.isNull()) {
                    out.println("The request for '" + args[0] + " classes' failed, because " + "shared classes were not enabled on that dump file.");
                    return;
                }
                if (sc.notNull()) {
                    startAddress = UDATA.cast(sc.cacheDescriptorList().romclassStartAddress()).longValue();
                    J9SharedCacheHeaderPointer header = sc.cacheDescriptorList().cacheStartAddress();
                    endAddress = UDATA.cast(header).add(header.segmentSRP()).longValue();
                }
            }
        }
        ClassSummaryHelper classSummaryHelper = new ClassSummaryHelper(preferredOrder);
        Statistics statistics = new Statistics();
        ROMClassesIterator classSegmentIterator = new ROMClassesIterator(out, vm.classMemorySegments());
        while (classSegmentIterator.hasNext()) {
            J9ROMClassPointer classPointer = (J9ROMClassPointer) classSegmentIterator.next();
            if (requiredShared || requiredLocal) {
                boolean isShared;
                if (sc.notNull()) {
                    long classAddress = classPointer.getAddress();
                    isShared = classAddress >= startAddress && classAddress < endAddress;
                } else {
                    isShared = false;
                }
                if (requiredShared && !isShared)
                    continue;
                if (requiredLocal && isShared)
                    continue;
            }
            ClassWalker classWalker = new RomClassWalker(classPointer, context);
            LinearDumper linearDumper = new LinearDumper();
            J9ClassRegionNode allRegionsNode = linearDumper.getAllRegions(classWalker);
            classSummaryHelper.addRegionsForClass(allRegionsNode);
            if (required16bitnas) {
                statistics.add(allRegionsNode);
            }
        }
        classSummaryHelper.printStatistics(out);
        if (statistics.nameAndSignatureSRP16bitSize != -1) {
            out.println();
            out.println("<Total 16bit nameAndSignatureSRPs Size>");
            out.println(statistics.nameAndSignatureSRP16bitSize);
        }
        if (statistics.nameAndSignatureSRPCount != -1 && statistics.cpFieldNASCount != -1) {
            out.println();
            out.println("<Shared nameAndSignatureSRPs>");
            // nameAndSignatureSRPCount is divided by 2, because there is a name and a signature per NAS field
            out.println(statistics.cpFieldNASCount - statistics.nameAndSignatureSRPCount / 2);
        }
    } catch (CorruptDataException e) {
        throw new DDRInteractiveCommandException(e);
    }
}

Example 4 with RomClassWalker

use of com.ibm.j9ddr.vm29.tools.ddrinteractive.RomClassWalker in project openj9 by eclipse.

the class AnalyseRomClassUTF8Command method run.

public void run(String command, String[] args, Context context, PrintStream out) throws DDRInteractiveCommandException {
    try {
        boolean printUTF8WeightList = false;
        int maxDistributionPercent = 85;
        if ((args.length >= 1) && (args[0].equals("UTF8WeightList"))) {
            printUTF8WeightList = true;
        }
        for (int i = 0; i < args.length; i++) {
            if (args[i].endsWith("%")) {
                try {
                    // Parses the maxDistribution string such as 85%
                    maxDistributionPercent = DecimalFormat.getInstance().parse(args[i]).intValue();
                } catch (ParseException e) {
                    out.println("Usage: !analyseromClassutf8 [UTF8WeightList] [maxDistribution%]		maxDistribution defaults to 85%");
                }
            }
        }
        Statistics statistics = new Statistics();
        J9JavaVMPointer vm = J9RASHelper.getVM(DataType.getJ9RASPointer());
        ROMClassesIterator classSegmentIterator = new ROMClassesIterator(out, vm.classMemorySegments());
        J9ObjectPointer bootstraploader = vm.systemClassLoader().classLoaderObject();
        while (classSegmentIterator.hasNext()) {
            J9ROMClassPointer classPointer = (J9ROMClassPointer) classSegmentIterator.next();
            ClassWalker classWalker = new RomClassWalker(classPointer, context);
            LinearDumper linearDumper = new LinearDumper();
            J9ClassRegionNode allRegionsNode = linearDumper.getAllRegions(classWalker);
            statistics.add(allRegionsNode, classSegmentIterator, bootstraploader);
        }
        statistics.getResult(printUTF8WeightList, maxDistributionPercent, out);
    } catch (CorruptDataException e) {
        throw new DDRInteractiveCommandException(e);
    }
}

Example 5 with RomClassWalker

use of com.ibm.j9ddr.vm29.tools.ddrinteractive.RomClassWalker in project openj9 by eclipse.

the class QueryRomClassCommand method run.

public void run(String command, String[] args, Context context, PrintStream out) throws DDRInteractiveCommandException {
    if (args.length == 0) {
        printUsage(out);
        return;
    }
    try {
        String[] queries = args[0].split(",");
        long address = CommandUtils.parsePointer(queries[0], J9BuildFlags.env_data64);
        J9ROMClassPointer romClass = J9ROMClassPointer.cast(address);
        queries[0] = "";
        ClassWalker classWalker = new RomClassWalker(romClass, context);
        LinearDumper linearDumper = new LinearDumper();
        J9ClassRegionNode allRegionsNode = linearDumper.getAllRegions(classWalker);
        for (String query : queries) {
            if (query.length() != 0) {
                queryROMClass(out, romClass, query, allRegionsNode);
            }
        }
    } catch (CorruptDataException e) {
        throw new DDRInteractiveCommandException(e);
    }
}