267 // not headers.
268 inline oop oopDesc::atomic_exchange_oop(oop exchange_value, volatile HeapWord *dest) {
269 if (UseCompressedOops) {
270 // encode exchange value from oop to T
271 narrowOop val = encode_heap_oop(exchange_value);
272 narrowOop old = (narrowOop)Atomic::xchg(val, (narrowOop*)dest);
273 // decode old from T to oop
274 return decode_heap_oop(old);
275 } else {
276 return (oop)Atomic::xchg_ptr(exchange_value, (oop*)dest);
277 }
278 }
279
280 // In order to put or get a field out of an instance, must first check
281 // if the field has been compressed and uncompress it.
282 inline oop oopDesc::obj_field(int offset) const {
283 return UseCompressedOops ?
284 load_decode_heap_oop(obj_field_addr<narrowOop>(offset)) :
285 load_decode_heap_oop(obj_field_addr<oop>(offset));
286 }
287 inline volatile oop oopDesc::obj_field_volatile(int offset) const {
288 volatile oop value = obj_field(offset);
289 OrderAccess::acquire();
290 return value;
291 }
292 inline void oopDesc::obj_field_put(int offset, oop value) {
293 UseCompressedOops ? oop_store(obj_field_addr<narrowOop>(offset), value) :
294 oop_store(obj_field_addr<oop>(offset), value);
295 }
296
297 inline Metadata* oopDesc::metadata_field(int offset) const {
298 return *metadata_field_addr(offset);
299 }
300
301 inline void oopDesc::metadata_field_put(int offset, Metadata* value) {
302 *metadata_field_addr(offset) = value;
303 }
304
305 inline void oopDesc::obj_field_put_raw(int offset, oop value) {
306 UseCompressedOops ?
307 encode_store_heap_oop(obj_field_addr<narrowOop>(offset), value) :
308 encode_store_heap_oop(obj_field_addr<oop>(offset), value);
309 }
310 inline void oopDesc::obj_field_put_volatile(int offset, oop value) {
311 OrderAccess::release();
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267 // not headers.
268 inline oop oopDesc::atomic_exchange_oop(oop exchange_value, volatile HeapWord *dest) {
269 if (UseCompressedOops) {
270 // encode exchange value from oop to T
271 narrowOop val = encode_heap_oop(exchange_value);
272 narrowOop old = (narrowOop)Atomic::xchg(val, (narrowOop*)dest);
273 // decode old from T to oop
274 return decode_heap_oop(old);
275 } else {
276 return (oop)Atomic::xchg_ptr(exchange_value, (oop*)dest);
277 }
278 }
279
280 // In order to put or get a field out of an instance, must first check
281 // if the field has been compressed and uncompress it.
282 inline oop oopDesc::obj_field(int offset) const {
283 return UseCompressedOops ?
284 load_decode_heap_oop(obj_field_addr<narrowOop>(offset)) :
285 load_decode_heap_oop(obj_field_addr<oop>(offset));
286 }
287 inline void oopDesc::obj_field_put(int offset, oop value) {
288 UseCompressedOops ? oop_store(obj_field_addr<narrowOop>(offset), value) :
289 oop_store(obj_field_addr<oop>(offset), value);
290 }
291
292 inline Metadata* oopDesc::metadata_field(int offset) const {
293 return *metadata_field_addr(offset);
294 }
295
296 inline void oopDesc::metadata_field_put(int offset, Metadata* value) {
297 *metadata_field_addr(offset) = value;
298 }
299
300 inline void oopDesc::obj_field_put_raw(int offset, oop value) {
301 UseCompressedOops ?
302 encode_store_heap_oop(obj_field_addr<narrowOop>(offset), value) :
303 encode_store_heap_oop(obj_field_addr<oop>(offset), value);
304 }
305 inline void oopDesc::obj_field_put_volatile(int offset, oop value) {
306 OrderAccess::release();
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