334 }
335
336 // Used only for markSweep, scavenging
337 bool oopDesc::is_gc_marked() const {
338 return mark_raw()->is_marked();
339 }
340
341 // Used by scavengers
342 bool oopDesc::is_forwarded() const {
343 // The extra heap check is needed since the obj might be locked, in which case the
344 // mark would point to a stack location and have the sentinel bit cleared
345 return mark_raw()->is_marked();
346 }
347
348 // Used by scavengers
349 void oopDesc::forward_to(oop p) {
350 assert(check_obj_alignment(p),
351 "forwarding to something not aligned");
352 assert(Universe::heap()->is_in_reserved(p),
353 "forwarding to something not in heap");
354 assert(!is_archive_object(oop(this)) &&
355 !is_archive_object(p),
356 "forwarding archive object");
357 markOop m = markOopDesc::encode_pointer_as_mark(p);
358 assert(m->decode_pointer() == p, "encoding must be reversable");
359 set_mark_raw(m);
360 }
361
362 // Used by parallel scavengers
363 bool oopDesc::cas_forward_to(oop p, markOop compare, atomic_memory_order order) {
364 assert(check_obj_alignment(p),
365 "forwarding to something not aligned");
366 assert(Universe::heap()->is_in_reserved(p),
367 "forwarding to something not in heap");
368 markOop m = markOopDesc::encode_pointer_as_mark(p);
369 assert(m->decode_pointer() == p, "encoding must be reversable");
370 return cas_set_mark_raw(m, compare, order) == compare;
371 }
372
373 oop oopDesc::forward_to_atomic(oop p, atomic_memory_order order) {
374 markOop oldMark = mark_raw();
375 markOop forwardPtrMark = markOopDesc::encode_pointer_as_mark(p);
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334 }
335
336 // Used only for markSweep, scavenging
337 bool oopDesc::is_gc_marked() const {
338 return mark_raw()->is_marked();
339 }
340
341 // Used by scavengers
342 bool oopDesc::is_forwarded() const {
343 // The extra heap check is needed since the obj might be locked, in which case the
344 // mark would point to a stack location and have the sentinel bit cleared
345 return mark_raw()->is_marked();
346 }
347
348 // Used by scavengers
349 void oopDesc::forward_to(oop p) {
350 assert(check_obj_alignment(p),
351 "forwarding to something not aligned");
352 assert(Universe::heap()->is_in_reserved(p),
353 "forwarding to something not in heap");
354 assert(!is_archived_object(oop(this)) &&
355 !is_archived_object(p),
356 "forwarding archive object");
357 markOop m = markOopDesc::encode_pointer_as_mark(p);
358 assert(m->decode_pointer() == p, "encoding must be reversable");
359 set_mark_raw(m);
360 }
361
362 // Used by parallel scavengers
363 bool oopDesc::cas_forward_to(oop p, markOop compare, atomic_memory_order order) {
364 assert(check_obj_alignment(p),
365 "forwarding to something not aligned");
366 assert(Universe::heap()->is_in_reserved(p),
367 "forwarding to something not in heap");
368 markOop m = markOopDesc::encode_pointer_as_mark(p);
369 assert(m->decode_pointer() == p, "encoding must be reversable");
370 return cas_set_mark_raw(m, compare, order) == compare;
371 }
372
373 oop oopDesc::forward_to_atomic(oop p, atomic_memory_order order) {
374 markOop oldMark = mark_raw();
375 markOop forwardPtrMark = markOopDesc::encode_pointer_as_mark(p);
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