384 assert(mem != NULL, "NULL object pointer");
385 oopDesc::set_mark_raw(mem, Klass::default_prototype_header(_klass));
386 // Need a release store to ensure array/class length, mark word, and
387 // object zeroing are visible before setting the klass non-NULL, for
388 // concurrent collectors.
389 oopDesc::release_set_klass(mem, _klass);
390 return oop(mem);
391 }
392
393 oop MemAllocator::finish_with_properties(HeapWord* mem, ArrayStorageProperties storage_props) const {
394 finish(mem);
395 oopDesc::release_set_metadata(mem, storage_props, _klass);
396 return oop(mem);
397 }
398
399 oop ObjAllocator::initialize(HeapWord* mem) const {
400 mem_clear(mem);
401 return finish(mem);
402 }
403
404 MemRegion ObjArrayAllocator::obj_memory_range(oop obj) const {
405 if (_do_zero) {
406 return MemAllocator::obj_memory_range(obj);
407 }
408 ArrayKlass* array_klass = ArrayKlass::cast(_klass);
409 const size_t hs = arrayOopDesc::header_size(array_klass->element_type());
410 return MemRegion(((HeapWord*)obj) + hs, _word_size - hs);
411 }
412
413 oop ObjArrayAllocator::initialize(HeapWord* mem) const {
414 // Set array length before setting the _klass field because a
415 // non-NULL klass field indicates that the object is parsable by
416 // concurrent GC.
417 assert(_length >= 0, "length should be non-negative");
418 if (_do_zero) {
419 mem_clear(mem);
420 }
421 arrayOopDesc::set_length(mem, _length);
422 assert(ArrayKlass::cast(_klass)->storage_properties().is_empty() ||
423 ArrayKlass::cast(_klass)->dimension() == 1, "Multidim should have no storage props");
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384 assert(mem != NULL, "NULL object pointer");
385 oopDesc::set_mark_raw(mem, Klass::default_prototype_header(_klass));
386 // Need a release store to ensure array/class length, mark word, and
387 // object zeroing are visible before setting the klass non-NULL, for
388 // concurrent collectors.
389 oopDesc::release_set_klass(mem, _klass);
390 return oop(mem);
391 }
392
393 oop MemAllocator::finish_with_properties(HeapWord* mem, ArrayStorageProperties storage_props) const {
394 finish(mem);
395 oopDesc::release_set_metadata(mem, storage_props, _klass);
396 return oop(mem);
397 }
398
399 oop ObjAllocator::initialize(HeapWord* mem) const {
400 mem_clear(mem);
401 return finish(mem);
402 }
403
404 oop ObjBufferAllocator::initialize(HeapWord* mem) const {
405 oopDesc::set_klass_gap(mem, 0);
406 return finish(mem);
407 }
408
409
410 MemRegion ObjArrayAllocator::obj_memory_range(oop obj) const {
411 if (_do_zero) {
412 return MemAllocator::obj_memory_range(obj);
413 }
414 ArrayKlass* array_klass = ArrayKlass::cast(_klass);
415 const size_t hs = arrayOopDesc::header_size(array_klass->element_type());
416 return MemRegion(((HeapWord*)obj) + hs, _word_size - hs);
417 }
418
419 oop ObjArrayAllocator::initialize(HeapWord* mem) const {
420 // Set array length before setting the _klass field because a
421 // non-NULL klass field indicates that the object is parsable by
422 // concurrent GC.
423 assert(_length >= 0, "length should be non-negative");
424 if (_do_zero) {
425 mem_clear(mem);
426 }
427 arrayOopDesc::set_length(mem, _length);
428 assert(ArrayKlass::cast(_klass)->storage_properties().is_empty() ||
429 ArrayKlass::cast(_klass)->dimension() == 1, "Multidim should have no storage props");
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