Java Comparer类代码示例

import com.sun.tools.hat.internal.util.Comparer; //导入依赖的package包/类
private void printFullObject(JavaObject obj) {
    out.print("<h1>instance of ");
    print(obj.toString());
    out.print(" <small>(" + obj.getSize() + " bytes)</small>");
    out.println("</h1>\n");

    out.println("<h2>Class:</h2>");
    printClass(obj.getClazz());

    out.println("<h2>Instance data members:</h2>");
    final JavaThing[] things = obj.getFields();
    final JavaField[] fields = obj.getClazz().getFieldsForInstance();
    Integer[] hack = new Integer[things.length];
    for (int i = 0; i < things.length; i++) {
        hack[i] = new Integer(i);
    }
    ArraySorter.sort(hack, new Comparer() {
        public int compare(Object lhs, Object rhs) {
            JavaField left = fields[((Integer) lhs).intValue()];
            JavaField right = fields[((Integer) rhs).intValue()];
            return left.getName().compareTo(right.getName());
        }
    });
    for (int i = 0; i < things.length; i++) {
        int index = hack[i].intValue();
        printField(fields[index]);
        out.print(" : ");
        printThing(things[index]);
        out.println("<br>");
    }
}
 

import com.sun.tools.hat.internal.util.Comparer; //导入依赖的package包/类
public ReachableObjects(JavaHeapObject root,
                        final ReachableExcludes excludes) {
    this.root = root;

    final Hashtable<JavaHeapObject, JavaHeapObject> bag = new Hashtable<JavaHeapObject, JavaHeapObject>();
    final Hashtable<String, String> fieldsExcluded = new Hashtable<String, String>();  //Bag<String>
    final Hashtable<String, String> fieldsUsed = new Hashtable<String, String>();   // Bag<String>
    JavaHeapObjectVisitor visitor = new AbstractJavaHeapObjectVisitor() {
        public void visit(JavaHeapObject t) {
            // Size is zero for things like integer fields
            if (t != null && t.getSize() > 0 && bag.get(t) == null) {
                bag.put(t, t);
                t.visitReferencedObjects(this);
            }
        }

        public boolean mightExclude() {
            return excludes != null;
        }

        public boolean exclude(JavaClass clazz, JavaField f) {
            if (excludes == null) {
                return false;
            }
            String nm = clazz.getName() + "." + f.getName();
            if (excludes.isExcluded(nm)) {
                fieldsExcluded.put(nm, nm);
                return true;
            } else {
                fieldsUsed.put(nm, nm);
                return false;
            }
        }
    };
    // Put the closure of root and all objects reachable from root into
    // bag (depth first), but don't include root:
    visitor.visit(root);
    bag.remove(root);

    // Now grab the elements into a vector, and sort it in decreasing size
    JavaThing[] things = new JavaThing[bag.size()];
    int i = 0;
    for (Enumeration e = bag.elements(); e.hasMoreElements(); ) {
        things[i++] = (JavaThing) e.nextElement();
    }
    ArraySorter.sort(things, new Comparer() {
        public int compare(Object lhs, Object rhs) {
            JavaThing left = (JavaThing) lhs;
            JavaThing right = (JavaThing) rhs;
            int diff = right.getSize() - left.getSize();
            if (diff != 0) {
                return diff;
            }
            return left.compareTo(right);
        }
    });
    this.reachables = things;

    this.totalSize = root.getSize();
    for (i = 0; i < things.length; i++) {
        this.totalSize += things[i].getSize();
    }

    excludedFields = getElements(fieldsExcluded);
    usedFields = getElements(fieldsUsed);
}
 

import com.sun.tools.hat.internal.util.Comparer; //导入依赖的package包/类
public void run() {
    startHtml("All Members of the Rootset");

    Root[] roots = snapshot.getRootsArray();
    ArraySorter.sort(roots, new Comparer() {
        public int compare(Object lhs, Object rhs) {
            Root left = (Root) lhs;
            Root right = (Root) rhs;
            int d = left.getType() - right.getType();
            if (d != 0) {
                return -d;  // More interesting values are *higher*
            }
            return left.getDescription().compareTo(right.getDescription());
        }
    });

    int lastType = Root.INVALID_TYPE;

    for (int i= 0; i < roots.length; i++) {
        Root root = roots[i];

        if (root.getType() != lastType) {
            lastType = root.getType();
            out.print("<h2>");
            print(root.getTypeName() + " References");
            out.println("</h2>");
        }

        printRoot(root);
        if (root.getReferer() != null) {
            out.print("<small> (from ");
            printThingAnchorTag(root.getReferer().getId());
            print(root.getReferer().toString());
            out.print(")</a></small>");
        }
        out.print(" :<br>");

        JavaThing t = snapshot.findThing(root.getId());
        if (t != null) {    // It should always be
            print("--> ");
            printThing(t);
            out.println("<br>");
        }
    }

    out.println("<h2>Other Queries</h2>");
    out.println("<ul>");
    out.println("<li>");
    printAnchorStart();
    out.print("\">");
    print("Show All Classes");
    out.println("</a>");
    out.println("</ul>");

    endHtml();
}