import sun.jvm.hotspot.debugger.cdbg.CDebugger; //导入依赖的package包/类
protected WrongTypeException newWrongTypeException(Address addr) {
  String message = "No suitable match for type of address " + addr;
  CDebugger cdbg = VM.getVM().getDebugger().getCDebugger();
  if (cdbg != null) {
    // Most common case: V-table pointer is the first field
    Address vtblPtr = addr.getAddressAt(0);
    LoadObject lo = cdbg.loadObjectContainingPC(vtblPtr);
    if (lo != null) {
      ClosestSymbol symbol = lo.closestSymbolToPC(vtblPtr);
      if (symbol != null) {
        message += " (nearest symbol is " + symbol.getName() + ")";
      }
    }
  }

  return new WrongTypeException(message);
}
 

import sun.jvm.hotspot.debugger.cdbg.CDebugger; //导入依赖的package包/类
public CDebugger getCDebugger() {
  if (cdbg == null) {
     String cpu = getCPU();
     if (cpu.equals("ia64") ) {
        // IA-64 is not supported because of stack-walking issues
        return null;
     }
     cdbg = new BsdCDebugger(this);
  }
  return cdbg;
}
 

import sun.jvm.hotspot.debugger.cdbg.CDebugger; //导入依赖的package包/类
public CDebugger getCDebugger() {
  if (cdbg == null) {
     String cpu = getCPU();
     if (cpu.equals("ia64") ) {
        // IA-64 is not supported because of stack-walking issues
        return null;
     }
     cdbg = new LinuxCDebugger(this);
  }
  return cdbg;
}
 

import sun.jvm.hotspot.debugger.cdbg.CDebugger; //导入依赖的package包/类
public CDebugger getCDebugger() throws DebuggerException {
  return null;
}
 

import sun.jvm.hotspot.debugger.cdbg.CDebugger; //导入依赖的package包/类
@Override
public CDebugger getCDebugger() throws DebuggerException {
  return null;
}
 

import sun.jvm.hotspot.debugger.cdbg.CDebugger; //导入依赖的package包/类
/** If this platform supports C/C++ debugging via the CDebugger
    interface, returns a CDebugger object; otherwise returns
    null. */
public CDebugger getCDebugger() throws DebuggerException;