--- a/hotspot/src/share/vm/oops/method.cpp Thu May 15 17:38:50 2014 -0400
+++ b/hotspot/src/share/vm/oops/method.cpp Thu May 15 18:23:26 2014 -0400
@@ -1866,6 +1866,14 @@
loader_data->jmethod_ids()->clear_all_methods();
}
+bool Method::has_method_vptr(const void* ptr) {
+ Method m;
+ // This assumes that the vtbl pointer is the first word of a C++ object.
+ // This assumption is also in universe.cpp patch_klass_vtble
+ void* vtbl2 = dereference_vptr((const void*)&m);
+ void* this_vtbl = dereference_vptr(ptr);
+ return vtbl2 == this_vtbl;
+}
// Check that this pointer is valid by checking that the vtbl pointer matches
bool Method::is_valid_method() const {
@@ -1874,12 +1882,7 @@
} else if (!is_metaspace_object()) {
return false;
} else {
- Method m;
- // This assumes that the vtbl pointer is the first word of a C++ object.
- // This assumption is also in universe.cpp patch_klass_vtble
- void* vtbl2 = dereference_vptr((void*)&m);
- void* this_vtbl = dereference_vptr((void*)this);
- return vtbl2 == this_vtbl;
+ return has_method_vptr((const void*)this);
}
}