128   }
129   return LockingMode == LM_LIGHTWEIGHT || !SafepointSynchronize::is_at_safepoint();
130 }
131 
132 // used only for asserts and guarantees
133 bool oopDesc::is_oop_or_null(oop obj, bool ignore_mark_word) {
134   return obj == nullptr ? true : is_oop(obj, ignore_mark_word);
135 }
136 
137 VerifyOopClosure VerifyOopClosure::verify_oop;
138 
139 template <class T> void VerifyOopClosure::do_oop_work(T* p) {
140   oop obj = RawAccess<>::oop_load(p);
141   guarantee(oopDesc::is_oop_or_null(obj), "invalid oop: " PTR_FORMAT, p2i(obj));
142 }
143 
144 void VerifyOopClosure::do_oop(oop* p)       { VerifyOopClosure::do_oop_work(p); }
145 void VerifyOopClosure::do_oop(narrowOop* p) { VerifyOopClosure::do_oop_work(p); }
146 
147 // type test operations that doesn't require inclusion of oop.inline.hpp.
148 bool oopDesc::is_instance_noinline()    const { return is_instance();    }
149 bool oopDesc::is_instanceRef_noinline() const { return is_instanceRef(); }
150 bool oopDesc::is_stackChunk_noinline()  const { return is_stackChunk();  }
151 bool oopDesc::is_array_noinline()       const { return is_array();       }
152 bool oopDesc::is_objArray_noinline()    const { return is_objArray();    }
153 bool oopDesc::is_typeArray_noinline()   const { return is_typeArray();   }


154 
155 bool oopDesc::has_klass_gap() {
156   // Only has a klass gap when compressed class pointers are used.
157   return UseCompressedClassPointers;
158 }
159 
160 #if INCLUDE_CDS_JAVA_HEAP
161 void oopDesc::set_narrow_klass(narrowKlass nk) {
162   assert(CDSConfig::is_dumping_heap(), "Used by CDS only. Do not abuse!");
163   assert(UseCompressedClassPointers, "must be");
164   _metadata._compressed_klass = nk;
165 }
166 #endif
167 
168 void* oopDesc::load_oop_raw(oop obj, int offset) {
169   uintptr_t addr = (uintptr_t)(void*)obj + (uint)offset;
170   if (UseCompressedOops) {
171     narrowOop narrow_oop = *(narrowOop*)addr;
172     if (CompressedOops::is_null(narrow_oop)) return nullptr;
173     return (void*)CompressedOops::decode_raw(narrow_oop);

128   }
129   return LockingMode == LM_LIGHTWEIGHT || !SafepointSynchronize::is_at_safepoint();
130 }
131 
132 // used only for asserts and guarantees
133 bool oopDesc::is_oop_or_null(oop obj, bool ignore_mark_word) {
134   return obj == nullptr ? true : is_oop(obj, ignore_mark_word);
135 }
136 
137 VerifyOopClosure VerifyOopClosure::verify_oop;
138 
139 template <class T> void VerifyOopClosure::do_oop_work(T* p) {
140   oop obj = RawAccess<>::oop_load(p);
141   guarantee(oopDesc::is_oop_or_null(obj), "invalid oop: " PTR_FORMAT, p2i(obj));
142 }
143 
144 void VerifyOopClosure::do_oop(oop* p)       { VerifyOopClosure::do_oop_work(p); }
145 void VerifyOopClosure::do_oop(narrowOop* p) { VerifyOopClosure::do_oop_work(p); }
146 
147 // type test operations that doesn't require inclusion of oop.inline.hpp.
148 bool oopDesc::is_instance_noinline()        const { return is_instance();         }
149 bool oopDesc::is_instanceRef_noinline()     const { return is_instanceRef();      }
150 bool oopDesc::is_stackChunk_noinline()      const { return is_stackChunk();       }
151 bool oopDesc::is_array_noinline()           const { return is_array();            }
152 bool oopDesc::is_objArray_noinline()        const { return is_objArray();         }
153 bool oopDesc::is_typeArray_noinline()       const { return is_typeArray();        }
154 bool oopDesc::is_flatArray_noinline()       const { return is_flatArray();        }
155 bool oopDesc::is_null_free_array_noinline() const { return is_null_free_array();  }
156 
157 bool oopDesc::has_klass_gap() {
158   // Only has a klass gap when compressed class pointers are used.
159   return UseCompressedClassPointers;
160 }
161 
162 #if INCLUDE_CDS_JAVA_HEAP
163 void oopDesc::set_narrow_klass(narrowKlass nk) {
164   assert(CDSConfig::is_dumping_heap(), "Used by CDS only. Do not abuse!");
165   assert(UseCompressedClassPointers, "must be");
166   _metadata._compressed_klass = nk;
167 }
168 #endif
169 
170 void* oopDesc::load_oop_raw(oop obj, int offset) {
171   uintptr_t addr = (uintptr_t)(void*)obj + (uint)offset;
172   if (UseCompressedOops) {
173     narrowOop narrow_oop = *(narrowOop*)addr;
174     if (CompressedOops::is_null(narrow_oop)) return nullptr;
175     return (void*)CompressedOops::decode_raw(narrow_oop);