コード例 #1
0
// RedefineClasses() API support:
// If this constantPoolCacheEntry refers to old_method then update it
// to refer to new_method.
bool ConstantPoolCacheEntry::adjust_method_entry(methodOop old_method,
       methodOop new_method, bool * trace_name_printed) {

  if (is_vfinal()) {
    // virtual and final so _f2 contains method ptr instead of vtable index
    if (f2_as_vfinal_method() == old_method) {
      // match old_method so need an update
      // NOTE: can't use set_f2_as_vfinal_method as it asserts on different values
      _f2 = (intptr_t)new_method;
      if (RC_TRACE_IN_RANGE(0x00100000, 0x00400000)) {
        if (!(*trace_name_printed)) {
          // RC_TRACE_MESG macro has an embedded ResourceMark
          RC_TRACE_MESG(("adjust: name=%s",
            Klass::cast(old_method->method_holder())->external_name()));
          *trace_name_printed = true;
        }
        // RC_TRACE macro has an embedded ResourceMark
        RC_TRACE(0x00400000, ("cpc vf-entry update: %s(%s)",
          new_method->name()->as_C_string(),
          new_method->signature()->as_C_string()));
      }

      return true;
    }

    // f1() is not used with virtual entries so bail out
    return false;
  }

  if ((oop)_f1 == NULL) {
    // NULL f1() means this is a virtual entry so bail out
    // We are assuming that the vtable index does not need change.
    return false;
  }

  if ((oop)_f1 == old_method) {
    _f1 = new_method;
    if (RC_TRACE_IN_RANGE(0x00100000, 0x00400000)) {
      if (!(*trace_name_printed)) {
        // RC_TRACE_MESG macro has an embedded ResourceMark
        RC_TRACE_MESG(("adjust: name=%s",
          Klass::cast(old_method->method_holder())->external_name()));
        *trace_name_printed = true;
      }
      // RC_TRACE macro has an embedded ResourceMark
      RC_TRACE(0x00400000, ("cpc entry update: %s(%s)",
        new_method->name()->as_C_string(),
        new_method->signature()->as_C_string()));
    }

    return true;
  }

  return false;
}
コード例 #2
0
ファイル: vmSymbols.cpp プロジェクト: AllenWeb/jdk7u-hotspot
void vmIntrinsics::verify_method(ID actual_id, methodOop m) {
  Symbol* mk = Klass::cast(m->method_holder())->name();
  ID declared_id = match_method_with_klass(m, mk);

  if (declared_id == actual_id)  return; // success

  if (declared_id == _none && actual_id != _none && mk == vmSymbols::java_lang_StrictMath()) {
    // Here are a few special cases in StrictMath not declared in vmSymbols.hpp.
    switch (actual_id) {
    case _min:
    case _max:
    case _dsqrt:
      declared_id = match_method_with_klass(m, vmSymbols::java_lang_Math());
      if (declared_id == actual_id)  return; // acceptable alias
      break;
    }
  }

  const char* declared_name = name_at(declared_id);
  const char* actual_name   = name_at(actual_id);
  methodHandle mh = m;
  m = NULL;
  ttyLocker ttyl;
  if (xtty != NULL) {
    xtty->begin_elem("intrinsic_misdeclared actual='%s' declared='%s'",
                     actual_name, declared_name);
    xtty->method(mh);
    xtty->end_elem("");
  }
  if (PrintMiscellaneous && (WizardMode || Verbose)) {
    tty->print_cr("*** misidentified method; %s(%d) should be %s(%d):",
                  declared_name, declared_id, actual_name, actual_id);
    mh()->print_short_name(tty);
    tty->cr();
  }
}