| /* |
| * Copyright (c) 1997, 2014, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| * |
| */ |
| |
| #include "precompiled.hpp" |
| #include "classfile/symbolTable.hpp" |
| #include "classfile/systemDictionary.hpp" |
| #include "classfile/vmSymbols.hpp" |
| #include "gc_implementation/shared/markSweep.inline.hpp" |
| #include "gc_interface/collectedHeap.inline.hpp" |
| #include "memory/genOopClosures.inline.hpp" |
| #include "memory/iterator.inline.hpp" |
| #include "memory/metadataFactory.hpp" |
| #include "memory/resourceArea.hpp" |
| #include "memory/universe.inline.hpp" |
| #include "oops/instanceKlass.hpp" |
| #include "oops/klass.inline.hpp" |
| #include "oops/objArrayKlass.hpp" |
| #include "oops/objArrayKlass.inline.hpp" |
| #include "oops/objArrayOop.hpp" |
| #include "oops/oop.inline.hpp" |
| #include "oops/oop.inline2.hpp" |
| #include "oops/symbol.hpp" |
| #include "runtime/handles.inline.hpp" |
| #include "runtime/mutexLocker.hpp" |
| #include "runtime/orderAccess.inline.hpp" |
| #include "utilities/copy.hpp" |
| #include "utilities/macros.hpp" |
| #if INCLUDE_ALL_GCS |
| #include "gc_implementation/concurrentMarkSweep/cmsOopClosures.inline.hpp" |
| #include "gc_implementation/g1/g1CollectedHeap.inline.hpp" |
| #include "gc_implementation/g1/g1OopClosures.inline.hpp" |
| #include "gc_implementation/g1/g1RemSet.inline.hpp" |
| #include "gc_implementation/g1/heapRegionManager.inline.hpp" |
| #include "gc_implementation/parNew/parOopClosures.inline.hpp" |
| #include "gc_implementation/parallelScavenge/psCompactionManager.hpp" |
| #include "gc_implementation/parallelScavenge/psPromotionManager.inline.hpp" |
| #include "gc_implementation/parallelScavenge/psScavenge.inline.hpp" |
| #include "oops/oop.pcgc.inline.hpp" |
| #endif // INCLUDE_ALL_GCS |
| |
| ObjArrayKlass* ObjArrayKlass::allocate(ClassLoaderData* loader_data, int n, KlassHandle klass_handle, Symbol* name, TRAPS) { |
| assert(ObjArrayKlass::header_size() <= InstanceKlass::header_size(), |
| "array klasses must be same size as InstanceKlass"); |
| |
| int size = ArrayKlass::static_size(ObjArrayKlass::header_size()); |
| |
| return new (loader_data, size, THREAD) ObjArrayKlass(n, klass_handle, name); |
| } |
| |
| Klass* ObjArrayKlass::allocate_objArray_klass(ClassLoaderData* loader_data, |
| int n, KlassHandle element_klass, TRAPS) { |
| |
| // Eagerly allocate the direct array supertype. |
| KlassHandle super_klass = KlassHandle(); |
| if (!Universe::is_bootstrapping() || SystemDictionary::Object_klass_loaded()) { |
| KlassHandle element_super (THREAD, element_klass->super()); |
| if (element_super.not_null()) { |
| // The element type has a direct super. E.g., String[] has direct super of Object[]. |
| super_klass = KlassHandle(THREAD, element_super->array_klass_or_null()); |
| bool supers_exist = super_klass.not_null(); |
| // Also, see if the element has secondary supertypes. |
| // We need an array type for each. |
| Array<Klass*>* element_supers = element_klass->secondary_supers(); |
| for( int i = element_supers->length()-1; i >= 0; i-- ) { |
| Klass* elem_super = element_supers->at(i); |
| if (elem_super->array_klass_or_null() == NULL) { |
| supers_exist = false; |
| break; |
| } |
| } |
| if (!supers_exist) { |
| // Oops. Not allocated yet. Back out, allocate it, and retry. |
| KlassHandle ek; |
| { |
| MutexUnlocker mu(MultiArray_lock); |
| MutexUnlocker mc(Compile_lock); // for vtables |
| Klass* sk = element_super->array_klass(CHECK_0); |
| super_klass = KlassHandle(THREAD, sk); |
| for( int i = element_supers->length()-1; i >= 0; i-- ) { |
| KlassHandle elem_super (THREAD, element_supers->at(i)); |
| elem_super->array_klass(CHECK_0); |
| } |
| // Now retry from the beginning |
| Klass* klass_oop = element_klass->array_klass(n, CHECK_0); |
| // Create a handle because the enclosing brace, when locking |
| // can cause a gc. Better to have this function return a Handle. |
| ek = KlassHandle(THREAD, klass_oop); |
| } // re-lock |
| return ek(); |
| } |
| } else { |
| // The element type is already Object. Object[] has direct super of Object. |
| super_klass = KlassHandle(THREAD, SystemDictionary::Object_klass()); |
| } |
| } |
| |
| // Create type name for klass. |
| Symbol* name = NULL; |
| if (!element_klass->oop_is_instance() || |
| (name = InstanceKlass::cast(element_klass())->array_name()) == NULL) { |
| |
| ResourceMark rm(THREAD); |
| char *name_str = element_klass->name()->as_C_string(); |
| int len = element_klass->name()->utf8_length(); |
| char *new_str = NEW_RESOURCE_ARRAY(char, len + 4); |
| int idx = 0; |
| new_str[idx++] = '['; |
| if (element_klass->oop_is_instance()) { // it could be an array or simple type |
| new_str[idx++] = 'L'; |
| } |
| memcpy(&new_str[idx], name_str, len * sizeof(char)); |
| idx += len; |
| if (element_klass->oop_is_instance()) { |
| new_str[idx++] = ';'; |
| } |
| new_str[idx++] = '\0'; |
| name = SymbolTable::new_permanent_symbol(new_str, CHECK_0); |
| if (element_klass->oop_is_instance()) { |
| InstanceKlass* ik = InstanceKlass::cast(element_klass()); |
| ik->set_array_name(name); |
| } |
| } |
| |
| // Initialize instance variables |
| ObjArrayKlass* oak = ObjArrayKlass::allocate(loader_data, n, element_klass, name, CHECK_0); |
| |
| // Add all classes to our internal class loader list here, |
| // including classes in the bootstrap (NULL) class loader. |
| // GC walks these as strong roots. |
| loader_data->add_class(oak); |
| |
| // Call complete_create_array_klass after all instance variables has been initialized. |
| ArrayKlass::complete_create_array_klass(oak, super_klass, CHECK_0); |
| |
| return oak; |
| } |
| |
| ObjArrayKlass::ObjArrayKlass(int n, KlassHandle element_klass, Symbol* name) : ArrayKlass(name) { |
| this->set_dimension(n); |
| this->set_element_klass(element_klass()); |
| // decrement refcount because object arrays are not explicitly freed. The |
| // InstanceKlass array_name() keeps the name counted while the klass is |
| // loaded. |
| name->decrement_refcount(); |
| |
| Klass* bk; |
| if (element_klass->oop_is_objArray()) { |
| bk = ObjArrayKlass::cast(element_klass())->bottom_klass(); |
| } else { |
| bk = element_klass(); |
| } |
| assert(bk != NULL && (bk->oop_is_instance() || bk->oop_is_typeArray()), "invalid bottom klass"); |
| this->set_bottom_klass(bk); |
| this->set_class_loader_data(bk->class_loader_data()); |
| |
| this->set_layout_helper(array_layout_helper(T_OBJECT)); |
| assert(this->oop_is_array(), "sanity"); |
| assert(this->oop_is_objArray(), "sanity"); |
| } |
| |
| int ObjArrayKlass::oop_size(oop obj) const { |
| assert(obj->is_objArray(), "must be object array"); |
| return objArrayOop(obj)->object_size(); |
| } |
| |
| objArrayOop ObjArrayKlass::allocate(int length, TRAPS) { |
| if (length >= 0) { |
| if (length <= arrayOopDesc::max_array_length(T_OBJECT)) { |
| int size = objArrayOopDesc::object_size(length); |
| KlassHandle h_k(THREAD, this); |
| return (objArrayOop)CollectedHeap::array_allocate(h_k, size, length, CHECK_NULL); |
| } else { |
| report_java_out_of_memory("Requested array size exceeds VM limit"); |
| JvmtiExport::post_array_size_exhausted(); |
| THROW_OOP_0(Universe::out_of_memory_error_array_size()); |
| } |
| } else { |
| THROW_0(vmSymbols::java_lang_NegativeArraySizeException()); |
| } |
| } |
| |
| static int multi_alloc_counter = 0; |
| |
| oop ObjArrayKlass::multi_allocate(int rank, jint* sizes, TRAPS) { |
| int length = *sizes; |
| // Call to lower_dimension uses this pointer, so most be called before a |
| // possible GC |
| KlassHandle h_lower_dimension(THREAD, lower_dimension()); |
| // If length < 0 allocate will throw an exception. |
| objArrayOop array = allocate(length, CHECK_NULL); |
| objArrayHandle h_array (THREAD, array); |
| if (rank > 1) { |
| if (length != 0) { |
| for (int index = 0; index < length; index++) { |
| ArrayKlass* ak = ArrayKlass::cast(h_lower_dimension()); |
| oop sub_array = ak->multi_allocate(rank-1, &sizes[1], CHECK_NULL); |
| h_array->obj_at_put(index, sub_array); |
| } |
| } else { |
| // Since this array dimension has zero length, nothing will be |
| // allocated, however the lower dimension values must be checked |
| // for illegal values. |
| for (int i = 0; i < rank - 1; ++i) { |
| sizes += 1; |
| if (*sizes < 0) { |
| THROW_0(vmSymbols::java_lang_NegativeArraySizeException()); |
| } |
| } |
| } |
| } |
| return h_array(); |
| } |
| |
| // Either oop or narrowOop depending on UseCompressedOops. |
| template <class T> void ObjArrayKlass::do_copy(arrayOop s, T* src, |
| arrayOop d, T* dst, int length, TRAPS) { |
| |
| BarrierSet* bs = Universe::heap()->barrier_set(); |
| // For performance reasons, we assume we are that the write barrier we |
| // are using has optimized modes for arrays of references. At least one |
| // of the asserts below will fail if this is not the case. |
| assert(bs->has_write_ref_array_opt(), "Barrier set must have ref array opt"); |
| assert(bs->has_write_ref_array_pre_opt(), "For pre-barrier as well."); |
| |
| if (s == d) { |
| // since source and destination are equal we do not need conversion checks. |
| assert(length > 0, "sanity check"); |
| bs->write_ref_array_pre(dst, length); |
| Copy::conjoint_oops_atomic(src, dst, length); |
| } else { |
| // We have to make sure all elements conform to the destination array |
| Klass* bound = ObjArrayKlass::cast(d->klass())->element_klass(); |
| Klass* stype = ObjArrayKlass::cast(s->klass())->element_klass(); |
| if (stype == bound || stype->is_subtype_of(bound)) { |
| // elements are guaranteed to be subtypes, so no check necessary |
| bs->write_ref_array_pre(dst, length); |
| Copy::conjoint_oops_atomic(src, dst, length); |
| } else { |
| // slow case: need individual subtype checks |
| // note: don't use obj_at_put below because it includes a redundant store check |
| T* from = src; |
| T* end = from + length; |
| for (T* p = dst; from < end; from++, p++) { |
| // XXX this is going to be slow. |
| T element = *from; |
| // even slower now |
| bool element_is_null = oopDesc::is_null(element); |
| oop new_val = element_is_null ? oop(NULL) |
| : oopDesc::decode_heap_oop_not_null(element); |
| if (element_is_null || |
| (new_val->klass())->is_subtype_of(bound)) { |
| bs->write_ref_field_pre(p, new_val); |
| *p = element; |
| } else { |
| // We must do a barrier to cover the partial copy. |
| const size_t pd = pointer_delta(p, dst, (size_t)heapOopSize); |
| // pointer delta is scaled to number of elements (length field in |
| // objArrayOop) which we assume is 32 bit. |
| assert(pd == (size_t)(int)pd, "length field overflow"); |
| bs->write_ref_array((HeapWord*)dst, pd); |
| THROW(vmSymbols::java_lang_ArrayStoreException()); |
| return; |
| } |
| } |
| } |
| } |
| bs->write_ref_array((HeapWord*)dst, length); |
| } |
| |
| void ObjArrayKlass::copy_array(arrayOop s, int src_pos, arrayOop d, |
| int dst_pos, int length, TRAPS) { |
| assert(s->is_objArray(), "must be obj array"); |
| |
| if (!d->is_objArray()) { |
| THROW(vmSymbols::java_lang_ArrayStoreException()); |
| } |
| |
| // Check is all offsets and lengths are non negative |
| if (src_pos < 0 || dst_pos < 0 || length < 0) { |
| THROW(vmSymbols::java_lang_ArrayIndexOutOfBoundsException()); |
| } |
| // Check if the ranges are valid |
| if ( (((unsigned int) length + (unsigned int) src_pos) > (unsigned int) s->length()) |
| || (((unsigned int) length + (unsigned int) dst_pos) > (unsigned int) d->length()) ) { |
| THROW(vmSymbols::java_lang_ArrayIndexOutOfBoundsException()); |
| } |
| |
| // Special case. Boundary cases must be checked first |
| // This allows the following call: copy_array(s, s.length(), d.length(), 0). |
| // This is correct, since the position is supposed to be an 'in between point', i.e., s.length(), |
| // points to the right of the last element. |
| if (length==0) { |
| return; |
| } |
| if (UseCompressedOops) { |
| narrowOop* const src = objArrayOop(s)->obj_at_addr<narrowOop>(src_pos); |
| narrowOop* const dst = objArrayOop(d)->obj_at_addr<narrowOop>(dst_pos); |
| do_copy<narrowOop>(s, src, d, dst, length, CHECK); |
| } else { |
| oop* const src = objArrayOop(s)->obj_at_addr<oop>(src_pos); |
| oop* const dst = objArrayOop(d)->obj_at_addr<oop>(dst_pos); |
| do_copy<oop> (s, src, d, dst, length, CHECK); |
| } |
| } |
| |
| |
| Klass* ObjArrayKlass::array_klass_impl(bool or_null, int n, TRAPS) { |
| |
| assert(dimension() <= n, "check order of chain"); |
| int dim = dimension(); |
| if (dim == n) return this; |
| |
| if (higher_dimension() == NULL) { |
| if (or_null) return NULL; |
| |
| ResourceMark rm; |
| JavaThread *jt = (JavaThread *)THREAD; |
| { |
| MutexLocker mc(Compile_lock, THREAD); // for vtables |
| // Ensure atomic creation of higher dimensions |
| MutexLocker mu(MultiArray_lock, THREAD); |
| |
| // Check if another thread beat us |
| if (higher_dimension() == NULL) { |
| |
| // Create multi-dim klass object and link them together |
| Klass* k = |
| ObjArrayKlass::allocate_objArray_klass(class_loader_data(), dim + 1, this, CHECK_NULL); |
| ObjArrayKlass* ak = ObjArrayKlass::cast(k); |
| ak->set_lower_dimension(this); |
| OrderAccess::storestore(); |
| set_higher_dimension(ak); |
| assert(ak->oop_is_objArray(), "incorrect initialization of ObjArrayKlass"); |
| } |
| } |
| } else { |
| CHECK_UNHANDLED_OOPS_ONLY(Thread::current()->clear_unhandled_oops()); |
| } |
| |
| ObjArrayKlass *ak = ObjArrayKlass::cast(higher_dimension()); |
| if (or_null) { |
| return ak->array_klass_or_null(n); |
| } |
| return ak->array_klass(n, CHECK_NULL); |
| } |
| |
| Klass* ObjArrayKlass::array_klass_impl(bool or_null, TRAPS) { |
| return array_klass_impl(or_null, dimension() + 1, CHECK_NULL); |
| } |
| |
| bool ObjArrayKlass::can_be_primary_super_slow() const { |
| if (!bottom_klass()->can_be_primary_super()) |
| // array of interfaces |
| return false; |
| else |
| return Klass::can_be_primary_super_slow(); |
| } |
| |
| GrowableArray<Klass*>* ObjArrayKlass::compute_secondary_supers(int num_extra_slots) { |
| // interfaces = { cloneable_klass, serializable_klass, elemSuper[], ... }; |
| Array<Klass*>* elem_supers = element_klass()->secondary_supers(); |
| int num_elem_supers = elem_supers == NULL ? 0 : elem_supers->length(); |
| int num_secondaries = num_extra_slots + 2 + num_elem_supers; |
| if (num_secondaries == 2) { |
| // Must share this for correct bootstrapping! |
| set_secondary_supers(Universe::the_array_interfaces_array()); |
| return NULL; |
| } else { |
| GrowableArray<Klass*>* secondaries = new GrowableArray<Klass*>(num_elem_supers+2); |
| secondaries->push(SystemDictionary::Cloneable_klass()); |
| secondaries->push(SystemDictionary::Serializable_klass()); |
| for (int i = 0; i < num_elem_supers; i++) { |
| Klass* elem_super = (Klass*) elem_supers->at(i); |
| Klass* array_super = elem_super->array_klass_or_null(); |
| assert(array_super != NULL, "must already have been created"); |
| secondaries->push(array_super); |
| } |
| return secondaries; |
| } |
| } |
| |
| bool ObjArrayKlass::compute_is_subtype_of(Klass* k) { |
| if (!k->oop_is_objArray()) |
| return ArrayKlass::compute_is_subtype_of(k); |
| |
| ObjArrayKlass* oak = ObjArrayKlass::cast(k); |
| return element_klass()->is_subtype_of(oak->element_klass()); |
| } |
| |
| void ObjArrayKlass::initialize(TRAPS) { |
| bottom_klass()->initialize(THREAD); // dispatches to either InstanceKlass or TypeArrayKlass |
| } |
| |
| #define ObjArrayKlass_SPECIALIZED_OOP_ITERATE(T, a, p, do_oop) \ |
| { \ |
| T* p = (T*)(a)->base(); \ |
| T* const end = p + (a)->length(); \ |
| while (p < end) { \ |
| do_oop; \ |
| p++; \ |
| } \ |
| } |
| |
| #define ObjArrayKlass_SPECIALIZED_BOUNDED_OOP_ITERATE(T, a, p, low, high, do_oop) \ |
| { \ |
| T* const l = (T*)(low); \ |
| T* const h = (T*)(high); \ |
| T* p = (T*)(a)->base(); \ |
| T* end = p + (a)->length(); \ |
| if (p < l) p = l; \ |
| if (end > h) end = h; \ |
| while (p < end) { \ |
| do_oop; \ |
| ++p; \ |
| } \ |
| } |
| |
| #define ObjArrayKlass_OOP_ITERATE(a, p, do_oop) \ |
| if (UseCompressedOops) { \ |
| ObjArrayKlass_SPECIALIZED_OOP_ITERATE(narrowOop, \ |
| a, p, do_oop) \ |
| } else { \ |
| ObjArrayKlass_SPECIALIZED_OOP_ITERATE(oop, \ |
| a, p, do_oop) \ |
| } |
| |
| #define ObjArrayKlass_BOUNDED_OOP_ITERATE(a, p, low, high, do_oop) \ |
| if (UseCompressedOops) { \ |
| ObjArrayKlass_SPECIALIZED_BOUNDED_OOP_ITERATE(narrowOop, \ |
| a, p, low, high, do_oop) \ |
| } else { \ |
| ObjArrayKlass_SPECIALIZED_BOUNDED_OOP_ITERATE(oop, \ |
| a, p, low, high, do_oop) \ |
| } |
| |
| void ObjArrayKlass::oop_follow_contents(oop obj) { |
| assert (obj->is_array(), "obj must be array"); |
| MarkSweep::follow_klass(obj->klass()); |
| if (UseCompressedOops) { |
| objarray_follow_contents<narrowOop>(obj, 0); |
| } else { |
| objarray_follow_contents<oop>(obj, 0); |
| } |
| } |
| |
| #if INCLUDE_ALL_GCS |
| void ObjArrayKlass::oop_follow_contents(ParCompactionManager* cm, |
| oop obj) { |
| assert(obj->is_array(), "obj must be array"); |
| PSParallelCompact::follow_klass(cm, obj->klass()); |
| if (UseCompressedOops) { |
| objarray_follow_contents<narrowOop>(cm, obj, 0); |
| } else { |
| objarray_follow_contents<oop>(cm, obj, 0); |
| } |
| } |
| #endif // INCLUDE_ALL_GCS |
| |
| #define ObjArrayKlass_OOP_OOP_ITERATE_DEFN(OopClosureType, nv_suffix) \ |
| \ |
| int ObjArrayKlass::oop_oop_iterate##nv_suffix(oop obj, \ |
| OopClosureType* closure) { \ |
| SpecializationStats::record_iterate_call##nv_suffix(SpecializationStats::oa); \ |
| assert (obj->is_array(), "obj must be array"); \ |
| objArrayOop a = objArrayOop(obj); \ |
| /* Get size before changing pointers. */ \ |
| /* Don't call size() or oop_size() since that is a virtual call. */ \ |
| int size = a->object_size(); \ |
| if_do_metadata_checked(closure, nv_suffix) { \ |
| closure->do_klass##nv_suffix(obj->klass()); \ |
| } \ |
| ObjArrayKlass_OOP_ITERATE(a, p, (closure)->do_oop##nv_suffix(p)) \ |
| return size; \ |
| } |
| |
| #define ObjArrayKlass_OOP_OOP_ITERATE_DEFN_m(OopClosureType, nv_suffix) \ |
| \ |
| int ObjArrayKlass::oop_oop_iterate##nv_suffix##_m(oop obj, \ |
| OopClosureType* closure, \ |
| MemRegion mr) { \ |
| SpecializationStats::record_iterate_call##nv_suffix(SpecializationStats::oa); \ |
| assert(obj->is_array(), "obj must be array"); \ |
| objArrayOop a = objArrayOop(obj); \ |
| /* Get size before changing pointers. */ \ |
| /* Don't call size() or oop_size() since that is a virtual call */ \ |
| int size = a->object_size(); \ |
| if_do_metadata_checked(closure, nv_suffix) { \ |
| /* SSS: Do we need to pass down mr here? */ \ |
| closure->do_klass##nv_suffix(a->klass()); \ |
| } \ |
| ObjArrayKlass_BOUNDED_OOP_ITERATE( \ |
| a, p, mr.start(), mr.end(), (closure)->do_oop##nv_suffix(p)) \ |
| return size; \ |
| } |
| |
| // Like oop_oop_iterate but only iterates over a specified range and only used |
| // for objArrayOops. |
| #define ObjArrayKlass_OOP_OOP_ITERATE_DEFN_r(OopClosureType, nv_suffix) \ |
| \ |
| int ObjArrayKlass::oop_oop_iterate_range##nv_suffix(oop obj, \ |
| OopClosureType* closure, \ |
| int start, int end) { \ |
| SpecializationStats::record_iterate_call##nv_suffix(SpecializationStats::oa); \ |
| assert(obj->is_array(), "obj must be array"); \ |
| objArrayOop a = objArrayOop(obj); \ |
| /* Get size before changing pointers. */ \ |
| /* Don't call size() or oop_size() since that is a virtual call */ \ |
| int size = a->object_size(); \ |
| if (UseCompressedOops) { \ |
| HeapWord* low = start == 0 ? (HeapWord*)a : (HeapWord*)a->obj_at_addr<narrowOop>(start);\ |
| /* this might be wierd if end needs to be aligned on HeapWord boundary */ \ |
| HeapWord* high = (HeapWord*)((narrowOop*)a->base() + end); \ |
| MemRegion mr(low, high); \ |
| if_do_metadata_checked(closure, nv_suffix) { \ |
| /* SSS: Do we need to pass down mr here? */ \ |
| closure->do_klass##nv_suffix(a->klass()); \ |
| } \ |
| ObjArrayKlass_SPECIALIZED_BOUNDED_OOP_ITERATE(narrowOop, \ |
| a, p, low, high, (closure)->do_oop##nv_suffix(p)) \ |
| } else { \ |
| HeapWord* low = start == 0 ? (HeapWord*)a : (HeapWord*)a->obj_at_addr<oop>(start); \ |
| HeapWord* high = (HeapWord*)((oop*)a->base() + end); \ |
| MemRegion mr(low, high); \ |
| if_do_metadata_checked(closure, nv_suffix) { \ |
| /* SSS: Do we need to pass down mr here? */ \ |
| closure->do_klass##nv_suffix(a->klass()); \ |
| } \ |
| ObjArrayKlass_SPECIALIZED_BOUNDED_OOP_ITERATE(oop, \ |
| a, p, low, high, (closure)->do_oop##nv_suffix(p)) \ |
| } \ |
| return size; \ |
| } |
| |
| ALL_OOP_OOP_ITERATE_CLOSURES_1(ObjArrayKlass_OOP_OOP_ITERATE_DEFN) |
| ALL_OOP_OOP_ITERATE_CLOSURES_2(ObjArrayKlass_OOP_OOP_ITERATE_DEFN) |
| ALL_OOP_OOP_ITERATE_CLOSURES_1(ObjArrayKlass_OOP_OOP_ITERATE_DEFN_m) |
| ALL_OOP_OOP_ITERATE_CLOSURES_2(ObjArrayKlass_OOP_OOP_ITERATE_DEFN_m) |
| ALL_OOP_OOP_ITERATE_CLOSURES_1(ObjArrayKlass_OOP_OOP_ITERATE_DEFN_r) |
| ALL_OOP_OOP_ITERATE_CLOSURES_2(ObjArrayKlass_OOP_OOP_ITERATE_DEFN_r) |
| |
| int ObjArrayKlass::oop_adjust_pointers(oop obj) { |
| assert(obj->is_objArray(), "obj must be obj array"); |
| objArrayOop a = objArrayOop(obj); |
| // Get size before changing pointers. |
| // Don't call size() or oop_size() since that is a virtual call. |
| int size = a->object_size(); |
| ObjArrayKlass_OOP_ITERATE(a, p, MarkSweep::adjust_pointer(p)) |
| return size; |
| } |
| |
| #if INCLUDE_ALL_GCS |
| void ObjArrayKlass::oop_push_contents(PSPromotionManager* pm, oop obj) { |
| assert(obj->is_objArray(), "obj must be obj array"); |
| ObjArrayKlass_OOP_ITERATE( \ |
| objArrayOop(obj), p, \ |
| if (PSScavenge::should_scavenge(p)) { \ |
| pm->claim_or_forward_depth(p); \ |
| }) |
| } |
| |
| int ObjArrayKlass::oop_update_pointers(ParCompactionManager* cm, oop obj) { |
| assert (obj->is_objArray(), "obj must be obj array"); |
| objArrayOop a = objArrayOop(obj); |
| int size = a->object_size(); |
| ObjArrayKlass_OOP_ITERATE(a, p, PSParallelCompact::adjust_pointer(p)) |
| return size; |
| } |
| #endif // INCLUDE_ALL_GCS |
| |
| // JVM support |
| |
| jint ObjArrayKlass::compute_modifier_flags(TRAPS) const { |
| // The modifier for an objectArray is the same as its element |
| if (element_klass() == NULL) { |
| assert(Universe::is_bootstrapping(), "partial objArray only at startup"); |
| return JVM_ACC_ABSTRACT | JVM_ACC_FINAL | JVM_ACC_PUBLIC; |
| } |
| // Return the flags of the bottom element type. |
| jint element_flags = bottom_klass()->compute_modifier_flags(CHECK_0); |
| |
| return (element_flags & (JVM_ACC_PUBLIC | JVM_ACC_PRIVATE | JVM_ACC_PROTECTED)) |
| | (JVM_ACC_ABSTRACT | JVM_ACC_FINAL); |
| } |
| |
| |
| // Printing |
| |
| void ObjArrayKlass::print_on(outputStream* st) const { |
| #ifndef PRODUCT |
| Klass::print_on(st); |
| st->print(" - instance klass: "); |
| element_klass()->print_value_on(st); |
| st->cr(); |
| #endif //PRODUCT |
| } |
| |
| void ObjArrayKlass::print_value_on(outputStream* st) const { |
| assert(is_klass(), "must be klass"); |
| |
| element_klass()->print_value_on(st); |
| st->print("[]"); |
| } |
| |
| #ifndef PRODUCT |
| |
| void ObjArrayKlass::oop_print_on(oop obj, outputStream* st) { |
| ArrayKlass::oop_print_on(obj, st); |
| assert(obj->is_objArray(), "must be objArray"); |
| objArrayOop oa = objArrayOop(obj); |
| int print_len = MIN2((intx) oa->length(), MaxElementPrintSize); |
| for(int index = 0; index < print_len; index++) { |
| st->print(" - %3d : ", index); |
| oa->obj_at(index)->print_value_on(st); |
| st->cr(); |
| } |
| int remaining = oa->length() - print_len; |
| if (remaining > 0) { |
| st->print_cr(" - <%d more elements, increase MaxElementPrintSize to print>", remaining); |
| } |
| } |
| |
| #endif //PRODUCT |
| |
| static int max_objArray_print_length = 4; |
| |
| void ObjArrayKlass::oop_print_value_on(oop obj, outputStream* st) { |
| assert(obj->is_objArray(), "must be objArray"); |
| st->print("a "); |
| element_klass()->print_value_on(st); |
| int len = objArrayOop(obj)->length(); |
| st->print("[%d] ", len); |
| obj->print_address_on(st); |
| if (NOT_PRODUCT(PrintOopAddress ||) PrintMiscellaneous && (WizardMode || Verbose)) { |
| st->print("{"); |
| for (int i = 0; i < len; i++) { |
| if (i > max_objArray_print_length) { |
| st->print("..."); break; |
| } |
| st->print(" "INTPTR_FORMAT, (intptr_t)(void*)objArrayOop(obj)->obj_at(i)); |
| } |
| st->print(" }"); |
| } |
| } |
| |
| const char* ObjArrayKlass::internal_name() const { |
| return external_name(); |
| } |
| |
| |
| // Verification |
| |
| void ObjArrayKlass::verify_on(outputStream* st) { |
| ArrayKlass::verify_on(st); |
| guarantee(element_klass()->is_klass(), "should be klass"); |
| guarantee(bottom_klass()->is_klass(), "should be klass"); |
| Klass* bk = bottom_klass(); |
| guarantee(bk->oop_is_instance() || bk->oop_is_typeArray(), "invalid bottom klass"); |
| } |
| |
| void ObjArrayKlass::oop_verify_on(oop obj, outputStream* st) { |
| ArrayKlass::oop_verify_on(obj, st); |
| guarantee(obj->is_objArray(), "must be objArray"); |
| objArrayOop oa = objArrayOop(obj); |
| for(int index = 0; index < oa->length(); index++) { |
| guarantee(oa->obj_at(index)->is_oop_or_null(), "should be oop"); |
| } |
| } |
