jdk8-mips64-public/hotspot: src/share/vm/oops/instanceKlassKlass.cpp@8ce625481709 (annotated)

src/share/vm/oops/instanceKlassKlass.cpp@8ce625481709 (annotated)

src/share/vm/oops/instanceKlassKlass.cpp

Fri, 15 Apr 2011 09:36:28 -0400

author: coleenp
date: Fri, 15 Apr 2011 09:36:28 -0400
changeset 2777: 8ce625481709
parent 2742: ed69575596ac
child 3137: e6b1331a51d2
permissions: -rw-r--r--

7032407: Crash in LinkResolver::runtime_resolve_virtual_method()
Summary: Make CDS reorder vtables so that dump time vtables match run time order, so when redefine classes reinitializes them, they aren't in the wrong order.
Reviewed-by: dcubed, acorn

 /*
  * Copyright (c) 1997, 2011, 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/javaClasses.hpp"
 #include "classfile/systemDictionary.hpp"
 #include "gc_implementation/shared/markSweep.inline.hpp"
 #include "gc_interface/collectedHeap.inline.hpp"
 #include "interpreter/oopMapCache.hpp"
 #include "memory/gcLocker.hpp"
 #include "oops/constantPoolOop.hpp"
 #include "oops/instanceKlass.hpp"
 #include "oops/instanceMirrorKlass.hpp"
 #include "oops/instanceKlassKlass.hpp"
 #include "oops/instanceRefKlass.hpp"
 #include "oops/objArrayKlassKlass.hpp"
 #include "oops/objArrayOop.hpp"
 #include "oops/oop.inline.hpp"
 #include "oops/oop.inline2.hpp"
 #include "oops/symbol.hpp"
 #include "oops/typeArrayOop.hpp"
 #include "prims/jvmtiExport.hpp"
 #include "runtime/fieldDescriptor.hpp"
 #ifndef SERIALGC
 #include "gc_implementation/parNew/parOopClosures.inline.hpp"
 #include "gc_implementation/parallelScavenge/psPromotionManager.inline.hpp"
 #include "gc_implementation/parallelScavenge/psScavenge.inline.hpp"
 #include "memory/cardTableRS.hpp"
 #include "oops/oop.pcgc.inline.hpp"
 #endif
 klassOop instanceKlassKlass::create_klass(TRAPS) {
   instanceKlassKlass o;
   KlassHandle h_this_klass(THREAD, Universe::klassKlassObj());
   KlassHandle k = base_create_klass(h_this_klass, header_size(), o.vtbl_value(), CHECK_NULL);
   // Make sure size calculation is right
   assert(k()->size() == align_object_size(header_size()), "wrong size for object");
   java_lang_Class::create_mirror(k, CHECK_NULL); // Allocate mirror
   return k();
 }
 int instanceKlassKlass::oop_size(oop obj) const {
   assert(obj->is_klass(), "must be klass");
   return instanceKlass::cast(klassOop(obj))->object_size();
 }
 bool instanceKlassKlass::oop_is_parsable(oop obj) const {
   assert(obj->is_klass(), "must be klass");
   instanceKlass* ik = instanceKlass::cast(klassOop(obj));
   return (!ik->null_vtbl()) && ik->object_is_parsable();
 }
 void instanceKlassKlass::iterate_c_heap_oops(instanceKlass* ik,
                                              OopClosure* closure) {
   if (ik->oop_map_cache() != NULL) {
     ik->oop_map_cache()->oop_iterate(closure);
   }
   if (ik->jni_ids() != NULL) {
     ik->jni_ids()->oops_do(closure);
   }
 }
 void instanceKlassKlass::oop_follow_contents(oop obj) {
   assert(obj->is_klass(),"must be a klass");
   assert(klassOop(obj)->klass_part()->oop_is_instance_slow(), "must be instance klass");
   instanceKlass* ik = instanceKlass::cast(klassOop(obj));
   {
     HandleMark hm;
     ik->vtable()->oop_follow_contents();
     ik->itable()->oop_follow_contents();
   }
   MarkSweep::mark_and_push(ik->adr_array_klasses());
   MarkSweep::mark_and_push(ik->adr_methods());
   MarkSweep::mark_and_push(ik->adr_method_ordering());
   MarkSweep::mark_and_push(ik->adr_local_interfaces());
   MarkSweep::mark_and_push(ik->adr_transitive_interfaces());
   MarkSweep::mark_and_push(ik->adr_fields());
   MarkSweep::mark_and_push(ik->adr_constants());
   MarkSweep::mark_and_push(ik->adr_class_loader());
   MarkSweep::mark_and_push(ik->adr_inner_classes());
   MarkSweep::mark_and_push(ik->adr_protection_domain());
   MarkSweep::mark_and_push(ik->adr_host_klass());
   MarkSweep::mark_and_push(ik->adr_signers());
   MarkSweep::mark_and_push(ik->adr_class_annotations());
   MarkSweep::mark_and_push(ik->adr_fields_annotations());
   MarkSweep::mark_and_push(ik->adr_methods_annotations());
   MarkSweep::mark_and_push(ik->adr_methods_parameter_annotations());
   MarkSweep::mark_and_push(ik->adr_methods_default_annotations());
   // We do not follow adr_implementors() here. It is followed later
   // in instanceKlass::follow_weak_klass_links()
   klassKlass::oop_follow_contents(obj);
   iterate_c_heap_oops(ik, &MarkSweep::mark_and_push_closure);
 }
 #ifndef SERIALGC
 void instanceKlassKlass::oop_follow_contents(ParCompactionManager* cm,
                                              oop obj) {
   assert(obj->is_klass(),"must be a klass");
   assert(klassOop(obj)->klass_part()->oop_is_instance_slow(), "must be instance klass");
   instanceKlass* ik = instanceKlass::cast(klassOop(obj));
   ik->vtable()->oop_follow_contents(cm);
   ik->itable()->oop_follow_contents(cm);
   PSParallelCompact::mark_and_push(cm, ik->adr_array_klasses());
   PSParallelCompact::mark_and_push(cm, ik->adr_methods());
   PSParallelCompact::mark_and_push(cm, ik->adr_method_ordering());
   PSParallelCompact::mark_and_push(cm, ik->adr_local_interfaces());
   PSParallelCompact::mark_and_push(cm, ik->adr_transitive_interfaces());
   PSParallelCompact::mark_and_push(cm, ik->adr_fields());
   PSParallelCompact::mark_and_push(cm, ik->adr_constants());
   PSParallelCompact::mark_and_push(cm, ik->adr_class_loader());
   PSParallelCompact::mark_and_push(cm, ik->adr_inner_classes());
   PSParallelCompact::mark_and_push(cm, ik->adr_protection_domain());
   PSParallelCompact::mark_and_push(cm, ik->adr_host_klass());
   PSParallelCompact::mark_and_push(cm, ik->adr_signers());
   PSParallelCompact::mark_and_push(cm, ik->adr_class_annotations());
   PSParallelCompact::mark_and_push(cm, ik->adr_fields_annotations());
   PSParallelCompact::mark_and_push(cm, ik->adr_methods_annotations());
   PSParallelCompact::mark_and_push(cm, ik->adr_methods_parameter_annotations());
   PSParallelCompact::mark_and_push(cm, ik->adr_methods_default_annotations());
   // We do not follow adr_implementor() here. It is followed later
   // in instanceKlass::follow_weak_klass_links()
   klassKlass::oop_follow_contents(cm, obj);
   PSParallelCompact::MarkAndPushClosure mark_and_push_closure(cm);
   iterate_c_heap_oops(ik, &mark_and_push_closure);
 }
 #endif // SERIALGC
 int instanceKlassKlass::oop_oop_iterate(oop obj, OopClosure* blk) {
   assert(obj->is_klass(),"must be a klass");
   assert(klassOop(obj)->klass_part()->oop_is_instance_slow(), "must be instance klass");
   instanceKlass* ik = instanceKlass::cast(klassOop(obj));
   // Get size before changing pointers.
   // Don't call size() or oop_size() since that is a virtual call.
   int size = ik->object_size();
   ik->vtable()->oop_oop_iterate(blk);
   ik->itable()->oop_oop_iterate(blk);
   blk->do_oop(ik->adr_array_klasses());
   blk->do_oop(ik->adr_methods());
   blk->do_oop(ik->adr_method_ordering());
   blk->do_oop(ik->adr_local_interfaces());
   blk->do_oop(ik->adr_transitive_interfaces());
   blk->do_oop(ik->adr_fields());
   blk->do_oop(ik->adr_constants());
   blk->do_oop(ik->adr_class_loader());
   blk->do_oop(ik->adr_protection_domain());
   blk->do_oop(ik->adr_host_klass());
   blk->do_oop(ik->adr_signers());
   blk->do_oop(ik->adr_inner_classes());
   for (int i = 0; i < instanceKlass::implementors_limit; i++) {
     blk->do_oop(&ik->adr_implementors()[i]);
   }
   blk->do_oop(ik->adr_class_annotations());
   blk->do_oop(ik->adr_fields_annotations());
   blk->do_oop(ik->adr_methods_annotations());
   blk->do_oop(ik->adr_methods_parameter_annotations());
   blk->do_oop(ik->adr_methods_default_annotations());
   klassKlass::oop_oop_iterate(obj, blk);
   if(ik->oop_map_cache() != NULL) ik->oop_map_cache()->oop_iterate(blk);
   return size;
 }
 int instanceKlassKlass::oop_oop_iterate_m(oop obj, OopClosure* blk,
                                            MemRegion mr) {
   assert(obj->is_klass(),"must be a klass");
   assert(klassOop(obj)->klass_part()->oop_is_instance_slow(), "must be instance klass");
   instanceKlass* ik = instanceKlass::cast(klassOop(obj));
   // Get size before changing pointers.
   // Don't call size() or oop_size() since that is a virtual call.
   int size = ik->object_size();
   ik->vtable()->oop_oop_iterate_m(blk, mr);
   ik->itable()->oop_oop_iterate_m(blk, mr);
   oop* adr;
   adr = ik->adr_array_klasses();
   if (mr.contains(adr)) blk->do_oop(adr);
   adr = ik->adr_methods();
   if (mr.contains(adr)) blk->do_oop(adr);
   adr = ik->adr_method_ordering();
   if (mr.contains(adr)) blk->do_oop(adr);
   adr = ik->adr_local_interfaces();
   if (mr.contains(adr)) blk->do_oop(adr);
   adr = ik->adr_transitive_interfaces();
   if (mr.contains(adr)) blk->do_oop(adr);
   adr = ik->adr_fields();
   if (mr.contains(adr)) blk->do_oop(adr);
   adr = ik->adr_constants();
   if (mr.contains(adr)) blk->do_oop(adr);
   adr = ik->adr_class_loader();
   if (mr.contains(adr)) blk->do_oop(adr);
   adr = ik->adr_protection_domain();
   if (mr.contains(adr)) blk->do_oop(adr);
   adr = ik->adr_host_klass();
   if (mr.contains(adr)) blk->do_oop(adr);
   adr = ik->adr_signers();
   if (mr.contains(adr)) blk->do_oop(adr);
   adr = ik->adr_inner_classes();
   if (mr.contains(adr)) blk->do_oop(adr);
   adr = ik->adr_implementors();
   for (int i = 0; i < instanceKlass::implementors_limit; i++) {
     if (mr.contains(&adr[i])) blk->do_oop(&adr[i]);
   }
   adr = ik->adr_class_annotations();
   if (mr.contains(adr)) blk->do_oop(adr);
   adr = ik->adr_fields_annotations();
   if (mr.contains(adr)) blk->do_oop(adr);
   adr = ik->adr_methods_annotations();
   if (mr.contains(adr)) blk->do_oop(adr);
   adr = ik->adr_methods_parameter_annotations();
   if (mr.contains(adr)) blk->do_oop(adr);
   adr = ik->adr_methods_default_annotations();
   if (mr.contains(adr)) blk->do_oop(adr);
   klassKlass::oop_oop_iterate_m(obj, blk, mr);
   if(ik->oop_map_cache() != NULL) ik->oop_map_cache()->oop_iterate(blk, mr);
   return size;
 }
 int instanceKlassKlass::oop_adjust_pointers(oop obj) {
   assert(obj->is_klass(),"must be a klass");
   assert(klassOop(obj)->klass_part()->oop_is_instance_slow(), "must be instance klass");
   instanceKlass* ik = instanceKlass::cast(klassOop(obj));
   ik->vtable()->oop_adjust_pointers();
   ik->itable()->oop_adjust_pointers();
   MarkSweep::adjust_pointer(ik->adr_array_klasses());
   MarkSweep::adjust_pointer(ik->adr_methods());
   MarkSweep::adjust_pointer(ik->adr_method_ordering());
   MarkSweep::adjust_pointer(ik->adr_local_interfaces());
   MarkSweep::adjust_pointer(ik->adr_transitive_interfaces());
   MarkSweep::adjust_pointer(ik->adr_fields());
   MarkSweep::adjust_pointer(ik->adr_constants());
   MarkSweep::adjust_pointer(ik->adr_class_loader());
   MarkSweep::adjust_pointer(ik->adr_protection_domain());
   MarkSweep::adjust_pointer(ik->adr_host_klass());
   MarkSweep::adjust_pointer(ik->adr_signers());
   MarkSweep::adjust_pointer(ik->adr_inner_classes());
   for (int i = 0; i < instanceKlass::implementors_limit; i++) {
     MarkSweep::adjust_pointer(&ik->adr_implementors()[i]);
   }
   MarkSweep::adjust_pointer(ik->adr_class_annotations());
   MarkSweep::adjust_pointer(ik->adr_fields_annotations());
   MarkSweep::adjust_pointer(ik->adr_methods_annotations());
   MarkSweep::adjust_pointer(ik->adr_methods_parameter_annotations());
   MarkSweep::adjust_pointer(ik->adr_methods_default_annotations());
   iterate_c_heap_oops(ik, &MarkSweep::adjust_root_pointer_closure);
   return klassKlass::oop_adjust_pointers(obj);
 }
 #ifndef SERIALGC
 void instanceKlassKlass::oop_push_contents(PSPromotionManager* pm, oop obj) {
   instanceKlass* ik = instanceKlass::cast(klassOop(obj));
   oop* loader_addr = ik->adr_class_loader();
   if (PSScavenge::should_scavenge(loader_addr)) {
     pm->claim_or_forward_depth(loader_addr);
   }
   oop* pd_addr = ik->adr_protection_domain();
   if (PSScavenge::should_scavenge(pd_addr)) {
     pm->claim_or_forward_depth(pd_addr);
   }
   oop* hk_addr = ik->adr_host_klass();
   if (PSScavenge::should_scavenge(hk_addr)) {
     pm->claim_or_forward_depth(hk_addr);
   }
   oop* sg_addr = ik->adr_signers();
   if (PSScavenge::should_scavenge(sg_addr)) {
     pm->claim_or_forward_depth(sg_addr);
   }
   klassKlass::oop_push_contents(pm, obj);
 }
 int instanceKlassKlass::oop_update_pointers(ParCompactionManager* cm, oop obj) {
   assert(obj->is_klass(),"must be a klass");
   assert(klassOop(obj)->klass_part()->oop_is_instance_slow(),
          "must be instance klass");
   instanceKlass* ik = instanceKlass::cast(klassOop(obj));
   ik->vtable()->oop_update_pointers(cm);
   ik->itable()->oop_update_pointers(cm);
   oop* const beg_oop = ik->oop_block_beg();
   oop* const end_oop = ik->oop_block_end();
   for (oop* cur_oop = beg_oop; cur_oop < end_oop; ++cur_oop) {
     PSParallelCompact::adjust_pointer(cur_oop);
   }
   OopClosure* closure = PSParallelCompact::adjust_root_pointer_closure();
   iterate_c_heap_oops(ik, closure);
   klassKlass::oop_update_pointers(cm, obj);
   return ik->object_size();
 }
 #endif // SERIALGC
 klassOop
 instanceKlassKlass::allocate_instance_klass(Symbol* name, int vtable_len, int itable_len,
                                             int static_field_size,
                                             unsigned nonstatic_oop_map_count,
                                             ReferenceType rt, TRAPS) {
   const int nonstatic_oop_map_size =
     instanceKlass::nonstatic_oop_map_size(nonstatic_oop_map_count);
   int size = instanceKlass::object_size(align_object_offset(vtable_len) + align_object_offset(itable_len) + nonstatic_oop_map_size);
   // Allocation
   KlassHandle h_this_klass(THREAD, as_klassOop());
   KlassHandle k;
   if (rt == REF_NONE) {
     if (name != vmSymbols::java_lang_Class()) {
       // regular klass
       instanceKlass o;
       k = base_create_klass(h_this_klass, size, o.vtbl_value(), CHECK_NULL);
     } else {
       // Class
       instanceMirrorKlass o;
       k = base_create_klass(h_this_klass, size, o.vtbl_value(), CHECK_NULL);
     }
   } else {
     // reference klass
     instanceRefKlass o;
     k = base_create_klass(h_this_klass, size, o.vtbl_value(), CHECK_NULL);
   }
   {
     No_Safepoint_Verifier no_safepoint; // until k becomes parsable
     instanceKlass* ik = (instanceKlass*) k()->klass_part();
     assert(!k()->is_parsable(), "not expecting parsability yet.");
     // The sizes of these these three variables are used for determining the
     // size of the instanceKlassOop. It is critical that these are set to the right
     // sizes before the first GC, i.e., when we allocate the mirror.
     ik->set_vtable_length(vtable_len);
     ik->set_itable_length(itable_len);
     ik->set_static_field_size(static_field_size);
     ik->set_nonstatic_oop_map_size(nonstatic_oop_map_size);
     assert(k()->size() == size, "wrong size for object");
     ik->set_array_klasses(NULL);
     ik->set_methods(NULL);
     ik->set_method_ordering(NULL);
     ik->set_local_interfaces(NULL);
     ik->set_transitive_interfaces(NULL);
     ik->init_implementor();
     ik->set_fields(NULL);
     ik->set_constants(NULL);
     ik->set_class_loader(NULL);
     ik->set_protection_domain(NULL);
     ik->set_host_klass(NULL);
     ik->set_signers(NULL);
     ik->set_source_file_name(NULL);
     ik->set_source_debug_extension(NULL);
     ik->set_source_debug_extension(NULL);
     ik->set_array_name(NULL);
     ik->set_inner_classes(NULL);
     ik->set_static_oop_field_count(0);
     ik->set_nonstatic_field_size(0);
     ik->set_is_marked_dependent(false);
     ik->set_init_state(instanceKlass::allocated);
     ik->set_init_thread(NULL);
     ik->set_reference_type(rt);
     ik->set_oop_map_cache(NULL);
     ik->set_jni_ids(NULL);
     ik->set_osr_nmethods_head(NULL);
     ik->set_breakpoints(NULL);
     ik->init_previous_versions();
     ik->set_generic_signature(NULL);
     ik->release_set_methods_jmethod_ids(NULL);
     ik->release_set_methods_cached_itable_indices(NULL);
     ik->set_class_annotations(NULL);
     ik->set_fields_annotations(NULL);
     ik->set_methods_annotations(NULL);
     ik->set_methods_parameter_annotations(NULL);
     ik->set_methods_default_annotations(NULL);
     ik->set_enclosing_method_indices(0, 0);
     ik->set_jvmti_cached_class_field_map(NULL);
     ik->set_initial_method_idnum(0);
     assert(k()->is_parsable(), "should be parsable here.");
     // initialize the non-header words to zero
     intptr_t* p = (intptr_t*)k();
     for (int index = instanceKlass::header_size(); index < size; index++) {
       p[index] = NULL_WORD;
     }
     // To get verify to work - must be set to partial loaded before first GC point.
     k()->set_partially_loaded();
   }
   return k();
 }
 #ifndef PRODUCT
 // Printing
 #define BULLET  " - "
 static const char* state_names[] = {
   "unparseable_by_gc", "allocated", "loaded", "linked", "being_initialized", "fully_initialized", "initialization_error"
 };
 void instanceKlassKlass::oop_print_on(oop obj, outputStream* st) {
   assert(obj->is_klass(), "must be klass");
   instanceKlass* ik = instanceKlass::cast(klassOop(obj));
   klassKlass::oop_print_on(obj, st);
   st->print(BULLET"instance size:     %d", ik->size_helper());                        st->cr();
   st->print(BULLET"klass size:        %d", ik->object_size());                        st->cr();
   st->print(BULLET"access:            "); ik->access_flags().print_on(st);            st->cr();
   st->print(BULLET"state:             "); st->print_cr(state_names[ik->_init_state]);
   st->print(BULLET"name:              "); ik->name()->print_value_on(st);             st->cr();
   st->print(BULLET"super:             "); ik->super()->print_value_on(st);            st->cr();
   st->print(BULLET"sub:               ");
   Klass* sub = ik->subklass();
   int n;
   for (n = 0; sub != NULL; n++, sub = sub->next_sibling()) {
     if (n < MaxSubklassPrintSize) {
       sub->as_klassOop()->print_value_on(st);
       st->print("   ");
     }
   }
   if (n >= MaxSubklassPrintSize) st->print("(%d more klasses...)", n - MaxSubklassPrintSize);
   st->cr();
   if (ik->is_interface()) {
     st->print_cr(BULLET"nof implementors:  %d", ik->nof_implementors());
     int print_impl = 0;
     for (int i = 0; i < instanceKlass::implementors_limit; i++) {
       if (ik->implementor(i) != NULL) {
         if (++print_impl == 1)
           st->print_cr(BULLET"implementor:    ");
         st->print("   ");
         ik->implementor(i)->print_value_on(st);
       }
     }
     if (print_impl > 0)  st->cr();
   }
   st->print(BULLET"arrays:            "); ik->array_klasses()->print_value_on(st);     st->cr();
   st->print(BULLET"methods:           "); ik->methods()->print_value_on(st);           st->cr();
   if (Verbose) {
     objArrayOop methods = ik->methods();
     for(int i = 0; i < methods->length(); i++) {
       tty->print("%d : ", i); methods->obj_at(i)->print_value(); tty->cr();
     }
   }
   st->print(BULLET"method ordering:   "); ik->method_ordering()->print_value_on(st);       st->cr();
   st->print(BULLET"local interfaces:  "); ik->local_interfaces()->print_value_on(st);      st->cr();
   st->print(BULLET"trans. interfaces: "); ik->transitive_interfaces()->print_value_on(st); st->cr();
   st->print(BULLET"constants:         "); ik->constants()->print_value_on(st);         st->cr();
   st->print(BULLET"class loader:      "); ik->class_loader()->print_value_on(st);      st->cr();
   st->print(BULLET"protection domain: "); ik->protection_domain()->print_value_on(st); st->cr();
   st->print(BULLET"host class:        "); ik->host_klass()->print_value_on(st);        st->cr();
   st->print(BULLET"signers:           "); ik->signers()->print_value_on(st);           st->cr();
   if (ik->source_file_name() != NULL) {
     st->print(BULLET"source file:       ");
     ik->source_file_name()->print_value_on(st);
     st->cr();
   }
   if (ik->source_debug_extension() != NULL) {
     st->print(BULLET"source debug extension:       ");
     ik->source_debug_extension()->print_value_on(st);
     st->cr();
   }
   {
     ResourceMark rm;
     // PreviousVersionInfo objects returned via PreviousVersionWalker
     // contain a GrowableArray of handles. We have to clean up the
     // GrowableArray _after_ the PreviousVersionWalker destructor
     // has destroyed the handles.
     {
       bool have_pv = false;
       PreviousVersionWalker pvw(ik);
       for (PreviousVersionInfo * pv_info = pvw.next_previous_version();
            pv_info != NULL; pv_info = pvw.next_previous_version()) {
         if (!have_pv)
           st->print(BULLET"previous version:  ");
         have_pv = true;
         pv_info->prev_constant_pool_handle()()->print_value_on(st);
       }
       if (have_pv)  st->cr();
     } // pvw is cleaned up
   } // rm is cleaned up
   if (ik->generic_signature() != NULL) {
     st->print(BULLET"generic signature: ");
     ik->generic_signature()->print_value_on(st);
     st->cr();
   }
   st->print(BULLET"inner classes:     "); ik->inner_classes()->print_value_on(st);     st->cr();
   st->print(BULLET"java mirror:       "); ik->java_mirror()->print_value_on(st);       st->cr();
   st->print(BULLET"vtable length      %d  (start addr: " INTPTR_FORMAT ")", ik->vtable_length(), ik->start_of_vtable());  st->cr();
   st->print(BULLET"itable length      %d (start addr: " INTPTR_FORMAT ")", ik->itable_length(), ik->start_of_itable()); st->cr();
   st->print_cr(BULLET"---- static fields (%d words):", ik->static_field_size());
   FieldPrinter print_static_field(st);
   ik->do_local_static_fields(&print_static_field);
   st->print_cr(BULLET"---- non-static fields (%d words):", ik->nonstatic_field_size());
   FieldPrinter print_nonstatic_field(st);
   ik->do_nonstatic_fields(&print_nonstatic_field);
   st->print(BULLET"non-static oop maps: ");
   OopMapBlock* map     = ik->start_of_nonstatic_oop_maps();
   OopMapBlock* end_map = map + ik->nonstatic_oop_map_count();
   while (map < end_map) {
     st->print("%d-%d ", map->offset(), map->offset() + heapOopSize*(map->count() - 1));
     map++;
   }
   st->cr();
 }
 #endif //PRODUCT
 void instanceKlassKlass::oop_print_value_on(oop obj, outputStream* st) {
   assert(obj->is_klass(), "must be klass");
   instanceKlass* ik = instanceKlass::cast(klassOop(obj));
   ik->name()->print_value_on(st);
 }
 const char* instanceKlassKlass::internal_name() const {
   return "{instance class}";
 }
 // Verification
 class VerifyFieldClosure: public OopClosure {
  protected:
   template <class T> void do_oop_work(T* p) {
     guarantee(Universe::heap()->is_in(p), "should be in heap");
     oop obj = oopDesc::load_decode_heap_oop(p);
     guarantee(obj->is_oop_or_null(), "should be in heap");
   }
  public:
   virtual void do_oop(oop* p)       { VerifyFieldClosure::do_oop_work(p); }
   virtual void do_oop(narrowOop* p) { VerifyFieldClosure::do_oop_work(p); }
 };
 void instanceKlassKlass::oop_verify_on(oop obj, outputStream* st) {
   klassKlass::oop_verify_on(obj, st);
   if (!obj->partially_loaded()) {
     Thread *thread = Thread::current();
     instanceKlass* ik = instanceKlass::cast(klassOop(obj));
 #ifndef PRODUCT
     // Avoid redundant verifies
     if (ik->_verify_count == Universe::verify_count()) return;
     ik->_verify_count = Universe::verify_count();
 #endif
     // Verify that klass is present in SystemDictionary
     if (ik->is_loaded() && !ik->is_anonymous()) {
       Symbol* h_name = ik->name();
       Handle h_loader (thread, ik->class_loader());
       Handle h_obj(thread, obj);
       SystemDictionary::verify_obj_klass_present(h_obj, h_name, h_loader);
     }
     // Verify static fields
     VerifyFieldClosure blk;
     // Verify vtables
     if (ik->is_linked()) {
       ResourceMark rm(thread);
       // $$$ This used to be done only for m/s collections.  Doing it
       // always seemed a valid generalization.  (DLD -- 6/00)
       ik->vtable()->verify(st);
     }
     // Verify oop map cache
     if (ik->oop_map_cache() != NULL) {
       ik->oop_map_cache()->verify();
     }
     // Verify first subklass
     if (ik->subklass_oop() != NULL) {
       guarantee(ik->subklass_oop()->is_perm(),  "should be in permspace");
       guarantee(ik->subklass_oop()->is_klass(), "should be klass");
     }
     // Verify siblings
     klassOop super = ik->super();
     Klass* sib = ik->next_sibling();
     int sib_count = 0;
     while (sib != NULL) {
       if (sib == ik) {
         fatal(err_msg("subclass cycle of length %d", sib_count));
       }
       if (sib_count >= 100000) {
         fatal(err_msg("suspiciously long subclass list %d", sib_count));
       }
       guarantee(sib->as_klassOop()->is_klass(), "should be klass");
       guarantee(sib->as_klassOop()->is_perm(),  "should be in permspace");
       guarantee(sib->super() == super, "siblings should have same superklass");
       sib = sib->next_sibling();
     }
     // Verify implementor fields
     bool saw_null_impl = false;
     for (int i = 0; i < instanceKlass::implementors_limit; i++) {
       klassOop im = ik->implementor(i);
       if (im == NULL) { saw_null_impl = true; continue; }
       guarantee(!saw_null_impl, "non-nulls must preceded all nulls");
       guarantee(ik->is_interface(), "only interfaces should have implementor set");
       guarantee(i < ik->nof_implementors(), "should only have one implementor");
       guarantee(im->is_perm(),  "should be in permspace");
       guarantee(im->is_klass(), "should be klass");
       guarantee(!Klass::cast(klassOop(im))->is_interface(), "implementors cannot be interfaces");
     }
     // Verify local interfaces
     objArrayOop local_interfaces = ik->local_interfaces();
     guarantee(local_interfaces->is_perm(),          "should be in permspace");
     guarantee(local_interfaces->is_objArray(),      "should be obj array");
     int j;
     for (j = 0; j < local_interfaces->length(); j++) {
       oop e = local_interfaces->obj_at(j);
       guarantee(e->is_klass() && Klass::cast(klassOop(e))->is_interface(), "invalid local interface");
     }
     // Verify transitive interfaces
     objArrayOop transitive_interfaces = ik->transitive_interfaces();
     guarantee(transitive_interfaces->is_perm(),          "should be in permspace");
     guarantee(transitive_interfaces->is_objArray(),      "should be obj array");
     for (j = 0; j < transitive_interfaces->length(); j++) {
       oop e = transitive_interfaces->obj_at(j);
       guarantee(e->is_klass() && Klass::cast(klassOop(e))->is_interface(), "invalid transitive interface");
     }
     // Verify methods
     objArrayOop methods = ik->methods();
     guarantee(methods->is_perm(),              "should be in permspace");
     guarantee(methods->is_objArray(),          "should be obj array");
     for (j = 0; j < methods->length(); j++) {
       guarantee(methods->obj_at(j)->is_method(), "non-method in methods array");
     }
     for (j = 0; j < methods->length() - 1; j++) {
       methodOop m1 = methodOop(methods->obj_at(j));
       methodOop m2 = methodOop(methods->obj_at(j + 1));
       guarantee(m1->name()->fast_compare(m2->name()) <= 0, "methods not sorted correctly");
     }
     // Verify method ordering
     typeArrayOop method_ordering = ik->method_ordering();
     guarantee(method_ordering->is_perm(),              "should be in permspace");
     guarantee(method_ordering->is_typeArray(),         "should be type array");
     int length = method_ordering->length();
     if (JvmtiExport::can_maintain_original_method_order() ||
         (UseSharedSpaces && length != 0)) {
       guarantee(length == methods->length(),           "invalid method ordering length");
       jlong sum = 0;
       for (j = 0; j < length; j++) {
         int original_index = method_ordering->int_at(j);
         guarantee(original_index >= 0 && original_index < length, "invalid method ordering index");
         sum += original_index;
       }
       // Verify sum of indices 0,1,...,length-1
       guarantee(sum == ((jlong)length*(length-1))/2,   "invalid method ordering sum");
     } else {
       guarantee(length == 0,                           "invalid method ordering length");
     }
     // Verify JNI static field identifiers
     if (ik->jni_ids() != NULL) {
       ik->jni_ids()->verify(ik->as_klassOop());
     }
     // Verify other fields
     if (ik->array_klasses() != NULL) {
       guarantee(ik->array_klasses()->is_perm(),      "should be in permspace");
       guarantee(ik->array_klasses()->is_klass(),     "should be klass");
     }
     guarantee(ik->fields()->is_perm(),               "should be in permspace");
     guarantee(ik->fields()->is_typeArray(),          "should be type array");
     guarantee(ik->constants()->is_perm(),            "should be in permspace");
     guarantee(ik->constants()->is_constantPool(),    "should be constant pool");
     guarantee(ik->inner_classes()->is_perm(),        "should be in permspace");
     guarantee(ik->inner_classes()->is_typeArray(),   "should be type array");
     if (ik->protection_domain() != NULL) {
       guarantee(ik->protection_domain()->is_oop(),  "should be oop");
     }
     if (ik->host_klass() != NULL) {
       guarantee(ik->host_klass()->is_oop(),  "should be oop");
     }
     if (ik->signers() != NULL) {
       guarantee(ik->signers()->is_objArray(),       "should be obj array");
     }
     if (ik->class_annotations() != NULL) {
       guarantee(ik->class_annotations()->is_typeArray(), "should be type array");
     }
     if (ik->fields_annotations() != NULL) {
       guarantee(ik->fields_annotations()->is_objArray(), "should be obj array");
     }
     if (ik->methods_annotations() != NULL) {
       guarantee(ik->methods_annotations()->is_objArray(), "should be obj array");
     }
     if (ik->methods_parameter_annotations() != NULL) {
       guarantee(ik->methods_parameter_annotations()->is_objArray(), "should be obj array");
     }
     if (ik->methods_default_annotations() != NULL) {
       guarantee(ik->methods_default_annotations()->is_objArray(), "should be obj array");
     }
   }
 }
 bool instanceKlassKlass::oop_partially_loaded(oop obj) const {
   assert(obj->is_klass(), "object must be klass");
   instanceKlass* ik = instanceKlass::cast(klassOop(obj));
   assert(ik->oop_is_instance(), "object must be instanceKlass");
   return ik->transitive_interfaces() == (objArrayOop) obj;   // Check whether transitive_interfaces points to self
 }
 // The transitive_interfaces is the last field set when loading an object.
 void instanceKlassKlass::oop_set_partially_loaded(oop obj) {
   assert(obj->is_klass(), "object must be klass");
   instanceKlass* ik = instanceKlass::cast(klassOop(obj));
   // Set the layout helper to a place-holder value, until fuller initialization.
   // (This allows asserts in oop_is_instance to succeed.)
   ik->set_layout_helper(Klass::instance_layout_helper(0, true));
   assert(ik->oop_is_instance(), "object must be instanceKlass");
   assert(ik->transitive_interfaces() == NULL, "just checking");
   ik->set_transitive_interfaces((objArrayOop) obj);   // Temporarily set transitive_interfaces to point to self
 }

Mercurial > jdk8-mips64-public > hotspot / annotate

src/share/vm/oops/instanceKlassKlass.cpp@8ce625481709 (annotated)

src/share/vm/oops/instanceKlassKlass.cpp