124
125 Klass* bk;
126 if (element_klass->is_objArray_klass()) {
127 bk = ObjArrayKlass::cast(element_klass)->bottom_klass();
128 } else {
129 bk = element_klass;
130 }
131 assert(bk != nullptr && (bk->is_instance_klass() || bk->is_typeArray_klass()), "invalid bottom klass");
132 set_bottom_klass(bk);
133 set_class_loader_data(bk->class_loader_data());
134
135 if (element_klass->is_array_klass()) {
136 set_lower_dimension(ArrayKlass::cast(element_klass));
137 }
138
139 set_layout_helper(array_layout_helper(T_OBJECT));
140 assert(is_array_klass(), "sanity");
141 assert(is_objArray_klass(), "sanity");
142 }
143
144 size_t ObjArrayKlass::oop_size(oop obj) const {
145 // In this assert, we cannot safely access the Klass* with compact headers,
146 // because size_given_klass() calls oop_size() on objects that might be
147 // concurrently forwarded, which would overwrite the Klass*.
148 assert(UseCompactObjectHeaders || obj->is_objArray(), "must be object array");
149 return objArrayOop(obj)->object_size();
150 }
151
152 objArrayOop ObjArrayKlass::allocate(int length, TRAPS) {
153 check_array_allocation_length(length, arrayOopDesc::max_array_length(T_OBJECT), CHECK_NULL);
154 size_t size = objArrayOopDesc::object_size(length);
155 return (objArrayOop)Universe::heap()->array_allocate(this, size, length,
156 /* do_zero */ true, THREAD);
157 }
158
159 oop ObjArrayKlass::multi_allocate(int rank, jint* sizes, TRAPS) {
160 int length = *sizes;
161 ArrayKlass* ld_klass = lower_dimension();
162 // If length < 0 allocate will throw an exception.
163 objArrayOop array = allocate(length, CHECK_NULL);
164 objArrayHandle h_array (THREAD, array);
165 if (rank > 1) {
166 if (length != 0) {
167 for (int index = 0; index < length; index++) {
168 oop sub_array = ld_klass->multi_allocate(rank - 1, &sizes[1], CHECK_NULL);
169 h_array->obj_at_put(index, sub_array);
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124
125 Klass* bk;
126 if (element_klass->is_objArray_klass()) {
127 bk = ObjArrayKlass::cast(element_klass)->bottom_klass();
128 } else {
129 bk = element_klass;
130 }
131 assert(bk != nullptr && (bk->is_instance_klass() || bk->is_typeArray_klass()), "invalid bottom klass");
132 set_bottom_klass(bk);
133 set_class_loader_data(bk->class_loader_data());
134
135 if (element_klass->is_array_klass()) {
136 set_lower_dimension(ArrayKlass::cast(element_klass));
137 }
138
139 set_layout_helper(array_layout_helper(T_OBJECT));
140 assert(is_array_klass(), "sanity");
141 assert(is_objArray_klass(), "sanity");
142 }
143
144 size_t ObjArrayKlass::oop_size(oop obj, markWord mark) const {
145 // In this assert, we cannot safely access the Klass* with compact headers,
146 // because size_given_klass() calls oop_size() on objects that might be
147 // concurrently forwarded, which would overwrite the Klass*.
148 assert(UseCompactObjectHeaders || obj->is_objArray(), "must be object array");
149 int length = LP64_ONLY(UseCompactObjectHeaders ? mark.array_length() :) objArrayOop(obj)->length();
150 return objArrayOop(obj)->object_size(length);
151 }
152
153 objArrayOop ObjArrayKlass::allocate(int length, TRAPS) {
154 check_array_allocation_length(length, arrayOopDesc::max_array_length(T_OBJECT), CHECK_NULL);
155 size_t size = objArrayOopDesc::object_size(length);
156 return (objArrayOop)Universe::heap()->array_allocate(this, size, length,
157 /* do_zero */ true, THREAD);
158 }
159
160 oop ObjArrayKlass::multi_allocate(int rank, jint* sizes, TRAPS) {
161 int length = *sizes;
162 ArrayKlass* ld_klass = lower_dimension();
163 // If length < 0 allocate will throw an exception.
164 objArrayOop array = allocate(length, CHECK_NULL);
165 objArrayHandle h_array (THREAD, array);
166 if (rank > 1) {
167 if (length != 0) {
168 for (int index = 0; index < length; index++) {
169 oop sub_array = ld_klass->multi_allocate(rank - 1, &sizes[1], CHECK_NULL);
170 h_array->obj_at_put(index, sub_array);
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