235   VM_ENTRY_MARK;

   235   // Note:  We do not need to resolve the handle or enter the VM

   236   return loader() == NULL;

   236   // in order to test null-ness.

   237   return _loader == NULL;

   238 }

   239 

   240 // ------------------------------------------------------------------

   241 // ciInstanceKlass::is_in_package

   242 //

   243 // Is this klass in the given package?

   244 bool ciInstanceKlass::is_in_package(const char* packagename, int len) {

   245   // To avoid class loader mischief, this test always rejects application classes.

   246   if (!uses_default_loader())

   247     return false;

   248   GUARDED_VM_ENTRY(

   249     return is_in_package_impl(packagename, len);

   250   )

   251 }

   252 

   253 bool ciInstanceKlass::is_in_package_impl(const char* packagename, int len) {

   254   ASSERT_IN_VM;

   255 

   256   // If packagename contains trailing '/' exclude it from the

   257   // prefix-test since we test for it explicitly.

   258   if (packagename[len - 1] == '/')

   259     len--;

   260 

   261   if (!name()->starts_with(packagename, len))

   262     return false;

   263 

   264   // Test if the class name is something like "java/lang".

   265   if ((len + 1) > name()->utf8_length())

   266     return false;

   267 

   268   // Test for trailing '/'

   269   if ((char) name()->byte_at(len) != '/')

   270     return false;

   271 

   272   // Make sure it's not actually in a subpackage:

   273   if (name()->index_of_at(len+1, "/", 1) >= 0)

   274     return false;

   275 

   276   return true;