import sun.jvm.hotspot.code.CodeBlob; //导入依赖的package包/类
public void doit(Tokens t) {
    if (t.countTokens() != 0) {
        usage();
    } else {
        final PrintStream fout = out;
        final HTMLGenerator gen = new HTMLGenerator(false);
        CodeCacheVisitor v = new CodeCacheVisitor() {
                public void prologue(Address start, Address end) {
                }
                public void visit(CodeBlob blob) {
                    fout.println(gen.genHTML(blob.contentBegin()));
                }
                public void epilogue() {
                }


            };
        VM.getVM().getCodeCache().iterate(v);
    }
}
 

import sun.jvm.hotspot.code.CodeBlob; //导入依赖的package包/类
public static void decode(InstructionVisitor visitor, CodeBlob blob, Address begin, Address end) {
   int codeSize = (int)end.minus(begin);
   long startPc = VM.getAddressValue(begin);
   byte[] code = new byte[codeSize];
   for (int i = 0; i < code.length; i++)
      code[i] = begin.getJByteAt(i);
   Disassembler dis = new Disassembler(startPc, code);
   dis.decode(visitor);
}