truffle: src/share/vm/oops/klass.cpp annotate

annotate src/share/vm/oops/klass.cpp @ 20375:6e0cb14ce59b

8046070: Class Data Sharing clean up and refactoring Summary: Cleaned up CDS to be more configurable, maintainable and extensible Reviewed-by: dholmes, coleenp, acorn, mchung

author	iklam
date	Thu, 21 Aug 2014 13:57:51 -0700
parents	2c6ef90f030a
children	47e3110c47e8 8cb56c8cb30d

rev	line source
0 a61af66fc99e Initial load duke parents: diff changeset	1 /*
17674 85318d1fe8fe 8027146: Class loading verification failure if GC occurs in Universe::flush_dependents_on coleenp parents: 17663 diff changeset	2 * Copyright (c) 1997, 2014, Oracle and/or its affiliates. All rights reserved.
0 a61af66fc99e Initial load duke parents: diff changeset	3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
a61af66fc99e Initial load duke parents: diff changeset	4 *
a61af66fc99e Initial load duke parents: diff changeset	5 * This code is free software; you can redistribute it and/or modify it
a61af66fc99e Initial load duke parents: diff changeset	6 * under the terms of the GNU General Public License version 2 only, as
a61af66fc99e Initial load duke parents: diff changeset	7 * published by the Free Software Foundation.
a61af66fc99e Initial load duke parents: diff changeset	8 *
a61af66fc99e Initial load duke parents: diff changeset	9 * This code is distributed in the hope that it will be useful, but WITHOUT
a61af66fc99e Initial load duke parents: diff changeset	10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
a61af66fc99e Initial load duke parents: diff changeset	11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
a61af66fc99e Initial load duke parents: diff changeset	12 * version 2 for more details (a copy is included in the LICENSE file that
a61af66fc99e Initial load duke parents: diff changeset	13 * accompanied this code).
a61af66fc99e Initial load duke parents: diff changeset	14 *
a61af66fc99e Initial load duke parents: diff changeset	15 * You should have received a copy of the GNU General Public License version
a61af66fc99e Initial load duke parents: diff changeset	16 * 2 along with this work; if not, write to the Free Software Foundation,
a61af66fc99e Initial load duke parents: diff changeset	17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
a61af66fc99e Initial load duke parents: diff changeset	18 *
1552 c18cbe5936b8 6941466: Oracle rebranding changes for Hotspot repositories trims parents: 1155 diff changeset	19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
c18cbe5936b8 6941466: Oracle rebranding changes for Hotspot repositories trims parents: 1155 diff changeset	20 * or visit www.oracle.com if you need additional information or have any
c18cbe5936b8 6941466: Oracle rebranding changes for Hotspot repositories trims parents: 1155 diff changeset	21 * questions.
0 a61af66fc99e Initial load duke parents: diff changeset	22 *
a61af66fc99e Initial load duke parents: diff changeset	23 */
a61af66fc99e Initial load duke parents: diff changeset	24
1972 f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1681 diff changeset	25 #include "precompiled.hpp"
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	26 #include "classfile/javaClasses.hpp"
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	27 #include "classfile/dictionary.hpp"
1972 f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1681 diff changeset	28 #include "classfile/systemDictionary.hpp"
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1681 diff changeset	29 #include "classfile/vmSymbols.hpp"
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	30 #include "gc_implementation/shared/markSweep.inline.hpp"
1972 f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1681 diff changeset	31 #include "gc_interface/collectedHeap.inline.hpp"
7956 16fb9f942703 6479360: PrintClassHistogram improvements acorn parents: 7185 diff changeset	32 #include "memory/heapInspection.hpp"
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	33 #include "memory/metadataFactory.hpp"
1972 f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1681 diff changeset	34 #include "memory/oopFactory.hpp"
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1681 diff changeset	35 #include "memory/resourceArea.hpp"
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1681 diff changeset	36 #include "oops/instanceKlass.hpp"
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1681 diff changeset	37 #include "oops/klass.inline.hpp"
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1681 diff changeset	38 #include "oops/oop.inline2.hpp"
20197 ce8f6bb717c9 8042195: Introduce umbrella header orderAccess.inline.hpp. goetz parents: 17935 diff changeset	39 #include "runtime/atomic.inline.hpp"
ce8f6bb717c9 8042195: Introduce umbrella header orderAccess.inline.hpp. goetz parents: 17935 diff changeset	40 #include "runtime/orderAccess.inline.hpp"
10405 f2110083203d 8005849: JEP 167: Event-Based JVM Tracing sla parents: 10376 diff changeset	41 #include "trace/traceMacros.hpp"
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	42 #include "utilities/stack.hpp"
8001 db9981fd3124 8005915: Unify SERIALGC and INCLUDE_ALTERNATE_GCS jprovino parents: 7185 diff changeset	43 #include "utilities/macros.hpp"
db9981fd3124 8005915: Unify SERIALGC and INCLUDE_ALTERNATE_GCS jprovino parents: 7185 diff changeset	44 #if INCLUDE_ALL_GCS
20278 2c6ef90f030a 8049421: G1 Class Unloading after completing a concurrent mark cycle stefank parents: 20262 diff changeset	45 #include "gc_implementation/g1/g1SATBCardTableModRefBS.hpp"
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	46 #include "gc_implementation/parallelScavenge/psParallelCompact.hpp"
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	47 #include "gc_implementation/parallelScavenge/psPromotionManager.hpp"
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	48 #include "gc_implementation/parallelScavenge/psScavenge.hpp"
8001 db9981fd3124 8005915: Unify SERIALGC and INCLUDE_ALTERNATE_GCS jprovino parents: 7185 diff changeset	49 #endif // INCLUDE_ALL_GCS
0 a61af66fc99e Initial load duke parents: diff changeset	50
2177 3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	51 void Klass::set_name(Symbol* n) {
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	52 _name = n;
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	53 if (_name != NULL) _name->increment_refcount();
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	54 }
0 a61af66fc99e Initial load duke parents: diff changeset	55
10265 92ef81e2f571 8003557: NPG: Klass* const k should be const Klass* k. minqi parents: 8751 diff changeset	56 bool Klass::is_subclass_of(const Klass* k) const {
0 a61af66fc99e Initial load duke parents: diff changeset	57 // Run up the super chain and check
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	58 if (this == k) return true;
0 a61af66fc99e Initial load duke parents: diff changeset	59
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	60 Klass* t = const_cast<Klass*>(this)->super();
0 a61af66fc99e Initial load duke parents: diff changeset	61
a61af66fc99e Initial load duke parents: diff changeset	62 while (t != NULL) {
a61af66fc99e Initial load duke parents: diff changeset	63 if (t == k) return true;
6983 070d523b96a7 8001471: Klass::cast() does nothing hseigel parents: 6867 diff changeset	64 t = t->super();
0 a61af66fc99e Initial load duke parents: diff changeset	65 }
a61af66fc99e Initial load duke parents: diff changeset	66 return false;
a61af66fc99e Initial load duke parents: diff changeset	67 }
a61af66fc99e Initial load duke parents: diff changeset	68
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	69 bool Klass::search_secondary_supers(Klass* k) const {
0 a61af66fc99e Initial load duke parents: diff changeset	70 // Put some extra logic here out-of-line, before the search proper.
a61af66fc99e Initial load duke parents: diff changeset	71 // This cuts down the size of the inline method.
a61af66fc99e Initial load duke parents: diff changeset	72
a61af66fc99e Initial load duke parents: diff changeset	73 // This is necessary, since I am never in my own secondary_super list.
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	74 if (this == k)
0 a61af66fc99e Initial load duke parents: diff changeset	75 return true;
a61af66fc99e Initial load duke parents: diff changeset	76 // Scan the array-of-objects for a match
a61af66fc99e Initial load duke parents: diff changeset	77 int cnt = secondary_supers()->length();
a61af66fc99e Initial load duke parents: diff changeset	78 for (int i = 0; i < cnt; i++) {
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	79 if (secondary_supers()->at(i) == k) {
0 a61af66fc99e Initial load duke parents: diff changeset	80 ((Klass*)this)->set_secondary_super_cache(k);
a61af66fc99e Initial load duke parents: diff changeset	81 return true;
a61af66fc99e Initial load duke parents: diff changeset	82 }
a61af66fc99e Initial load duke parents: diff changeset	83 }
a61af66fc99e Initial load duke parents: diff changeset	84 return false;
a61af66fc99e Initial load duke parents: diff changeset	85 }
a61af66fc99e Initial load duke parents: diff changeset	86
a61af66fc99e Initial load duke parents: diff changeset	87 // Return self, except for abstract classes with exactly 1
a61af66fc99e Initial load duke parents: diff changeset	88 // implementor. Then return the 1 concrete implementation.
a61af66fc99e Initial load duke parents: diff changeset	89 Klass *Klass::up_cast_abstract() {
a61af66fc99e Initial load duke parents: diff changeset	90 Klass *r = this;
a61af66fc99e Initial load duke parents: diff changeset	91 while( r->is_abstract() ) { // Receiver is abstract?
a61af66fc99e Initial load duke parents: diff changeset	92 Klass *s = r->subklass(); // Check for exactly 1 subklass
a61af66fc99e Initial load duke parents: diff changeset	93 if( !s \|\| s->next_sibling() ) // Oops; wrong count; give up
a61af66fc99e Initial load duke parents: diff changeset	94 return this; // Return 'this' as a no-progress flag
a61af66fc99e Initial load duke parents: diff changeset	95 r = s; // Loop till find concrete class
a61af66fc99e Initial load duke parents: diff changeset	96 }
a61af66fc99e Initial load duke parents: diff changeset	97 return r; // Return the 1 concrete class
a61af66fc99e Initial load duke parents: diff changeset	98 }
a61af66fc99e Initial load duke parents: diff changeset	99
605 98cb887364d3 6810672: Comment typos twisti parents: 431 diff changeset	100 // Find LCA in class hierarchy
0 a61af66fc99e Initial load duke parents: diff changeset	101 Klass Klass::LCA( Klass k2 ) {
a61af66fc99e Initial load duke parents: diff changeset	102 Klass *k1 = this;
a61af66fc99e Initial load duke parents: diff changeset	103 while( 1 ) {
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	104 if( k1->is_subtype_of(k2) ) return k2;
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	105 if( k2->is_subtype_of(k1) ) return k1;
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	106 k1 = k1->super();
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	107 k2 = k2->super();
0 a61af66fc99e Initial load duke parents: diff changeset	108 }
a61af66fc99e Initial load duke parents: diff changeset	109 }
a61af66fc99e Initial load duke parents: diff changeset	110
a61af66fc99e Initial load duke parents: diff changeset	111
a61af66fc99e Initial load duke parents: diff changeset	112 void Klass::check_valid_for_instantiation(bool throwError, TRAPS) {
a61af66fc99e Initial load duke parents: diff changeset	113 ResourceMark rm(THREAD);
a61af66fc99e Initial load duke parents: diff changeset	114 THROW_MSG(throwError ? vmSymbols::java_lang_InstantiationError()
a61af66fc99e Initial load duke parents: diff changeset	115 : vmSymbols::java_lang_InstantiationException(), external_name());
a61af66fc99e Initial load duke parents: diff changeset	116 }
a61af66fc99e Initial load duke parents: diff changeset	117
a61af66fc99e Initial load duke parents: diff changeset	118
a61af66fc99e Initial load duke parents: diff changeset	119 void Klass::copy_array(arrayOop s, int src_pos, arrayOop d, int dst_pos, int length, TRAPS) {
a61af66fc99e Initial load duke parents: diff changeset	120 THROW(vmSymbols::java_lang_ArrayStoreException());
a61af66fc99e Initial load duke parents: diff changeset	121 }
a61af66fc99e Initial load duke parents: diff changeset	122
a61af66fc99e Initial load duke parents: diff changeset	123
a61af66fc99e Initial load duke parents: diff changeset	124 void Klass::initialize(TRAPS) {
a61af66fc99e Initial load duke parents: diff changeset	125 ShouldNotReachHere();
a61af66fc99e Initial load duke parents: diff changeset	126 }
a61af66fc99e Initial load duke parents: diff changeset	127
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	128 bool Klass::compute_is_subtype_of(Klass* k) {
0 a61af66fc99e Initial load duke parents: diff changeset	129 assert(k->is_klass(), "argument must be a class");
a61af66fc99e Initial load duke parents: diff changeset	130 return is_subclass_of(k);
a61af66fc99e Initial load duke parents: diff changeset	131 }
a61af66fc99e Initial load duke parents: diff changeset	132
a61af66fc99e Initial load duke parents: diff changeset	133
17889 386dd1c71858 8033150: invokestatic: IncompatibleClassChangeError trying to invoke static method from a parent in presence of conflicting defaults. lfoltan parents: 17883 diff changeset	134 Method* Klass::uncached_lookup_method(Symbol* name, Symbol* signature, MethodLookupMode mode) const {
0 a61af66fc99e Initial load duke parents: diff changeset	135 #ifdef ASSERT
a61af66fc99e Initial load duke parents: diff changeset	136 tty->print_cr("Error: uncached_lookup_method called on a klass oop."
a61af66fc99e Initial load duke parents: diff changeset	137 " Likely error: reflection method does not correctly"
a61af66fc99e Initial load duke parents: diff changeset	138 " wrap return value in a mirror object.");
a61af66fc99e Initial load duke parents: diff changeset	139 #endif
a61af66fc99e Initial load duke parents: diff changeset	140 ShouldNotReachHere();
a61af66fc99e Initial load duke parents: diff changeset	141 return NULL;
a61af66fc99e Initial load duke parents: diff changeset	142 }
a61af66fc99e Initial load duke parents: diff changeset	143
12146 9758d9f36299 8021954: VM SIGSEGV during classloading on MacOS; hs_err_pid file produced coleenp parents: 11096 diff changeset	144 void* Klass::operator new(size_t size, ClassLoaderData* loader_data, size_t word_size, TRAPS) throw() {
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	145 return Metaspace::allocate(loader_data, word_size, /read_only/false,
10376 a1ebd310d5c1 8014912: Restore PrintSharedSpaces functionality after NPG iklam parents: 10343 diff changeset	146 MetaspaceObj::ClassType, CHECK_NULL);
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	147 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	148
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	149 Klass::Klass() {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	150 Klass* k = this;
0 a61af66fc99e Initial load duke parents: diff changeset	151
8712 3efdfd6ddbf2 8003553: NPG: metaspace objects should be zeroed in constructors coleenp parents: 8003 diff changeset	152 // Preinitialize supertype information.
3efdfd6ddbf2 8003553: NPG: metaspace objects should be zeroed in constructors coleenp parents: 8003 diff changeset	153 // A later call to initialize_supers() may update these settings:
3efdfd6ddbf2 8003553: NPG: metaspace objects should be zeroed in constructors coleenp parents: 8003 diff changeset	154 set_super(NULL);
3efdfd6ddbf2 8003553: NPG: metaspace objects should be zeroed in constructors coleenp parents: 8003 diff changeset	155 for (juint i = 0; i < Klass::primary_super_limit(); i++) {
3efdfd6ddbf2 8003553: NPG: metaspace objects should be zeroed in constructors coleenp parents: 8003 diff changeset	156 _primary_supers[i] = NULL;
0 a61af66fc99e Initial load duke parents: diff changeset	157 }
8712 3efdfd6ddbf2 8003553: NPG: metaspace objects should be zeroed in constructors coleenp parents: 8003 diff changeset	158 set_secondary_supers(NULL);
3efdfd6ddbf2 8003553: NPG: metaspace objects should be zeroed in constructors coleenp parents: 8003 diff changeset	159 set_secondary_super_cache(NULL);
3efdfd6ddbf2 8003553: NPG: metaspace objects should be zeroed in constructors coleenp parents: 8003 diff changeset	160 _primary_supers[0] = k;
3efdfd6ddbf2 8003553: NPG: metaspace objects should be zeroed in constructors coleenp parents: 8003 diff changeset	161 set_super_check_offset(in_bytes(primary_supers_offset()));
0 a61af66fc99e Initial load duke parents: diff changeset	162
20278 2c6ef90f030a 8049421: G1 Class Unloading after completing a concurrent mark cycle stefank parents: 20262 diff changeset	163 // The constructor is used from init_self_patching_vtbl_list,
2c6ef90f030a 8049421: G1 Class Unloading after completing a concurrent mark cycle stefank parents: 20262 diff changeset	164 // which doesn't zero out the memory before calling the constructor.
2c6ef90f030a 8049421: G1 Class Unloading after completing a concurrent mark cycle stefank parents: 20262 diff changeset	165 // Need to set the field explicitly to not hit an assert that the field
2c6ef90f030a 8049421: G1 Class Unloading after completing a concurrent mark cycle stefank parents: 20262 diff changeset	166 // should be NULL before setting it.
2c6ef90f030a 8049421: G1 Class Unloading after completing a concurrent mark cycle stefank parents: 20262 diff changeset	167 _java_mirror = NULL;
2c6ef90f030a 8049421: G1 Class Unloading after completing a concurrent mark cycle stefank parents: 20262 diff changeset	168
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	169 set_modifier_flags(0);
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	170 set_layout_helper(Klass::_lh_neutral_value);
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	171 set_name(NULL);
0 a61af66fc99e Initial load duke parents: diff changeset	172 AccessFlags af;
a61af66fc99e Initial load duke parents: diff changeset	173 af.set_flags(0);
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	174 set_access_flags(af);
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	175 set_subklass(NULL);
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	176 set_next_sibling(NULL);
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	177 set_next_link(NULL);
10405 f2110083203d 8005849: JEP 167: Event-Based JVM Tracing sla parents: 10376 diff changeset	178 TRACE_INIT_ID(this);
0 a61af66fc99e Initial load duke parents: diff changeset	179
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	180 set_prototype_header(markOopDesc::prototype());
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	181 set_biased_lock_revocation_count(0);
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	182 set_last_biased_lock_bulk_revocation_time(0);
0 a61af66fc99e Initial load duke parents: diff changeset	183
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	184 // The klass doesn't have any references at this point.
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	185 clear_modified_oops();
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	186 clear_accumulated_modified_oops();
20375 6e0cb14ce59b 8046070: Class Data Sharing clean up and refactoring iklam parents: 20278 diff changeset	187 _shared_class_path_index = -1;
0 a61af66fc99e Initial load duke parents: diff changeset	188 }
a61af66fc99e Initial load duke parents: diff changeset	189
a61af66fc99e Initial load duke parents: diff changeset	190 jint Klass::array_layout_helper(BasicType etype) {
a61af66fc99e Initial load duke parents: diff changeset	191 assert(etype >= T_BOOLEAN && etype <= T_OBJECT, "valid etype");
a61af66fc99e Initial load duke parents: diff changeset	192 // Note that T_ARRAY is not allowed here.
a61af66fc99e Initial load duke parents: diff changeset	193 int hsize = arrayOopDesc::base_offset_in_bytes(etype);
29 d5fc211aea19 6633953: type2aelembytes{T_ADDRESS} should be 8 bytes in 64 bit VM kvn parents: 0 diff changeset	194 int esize = type2aelembytes(etype);
0 a61af66fc99e Initial load duke parents: diff changeset	195 bool isobj = (etype == T_OBJECT);
a61af66fc99e Initial load duke parents: diff changeset	196 int tag = isobj ? _lh_array_tag_obj_value : _lh_array_tag_type_value;
a61af66fc99e Initial load duke parents: diff changeset	197 int lh = array_layout_helper(tag, hsize, etype, exact_log2(esize));
a61af66fc99e Initial load duke parents: diff changeset	198
a61af66fc99e Initial load duke parents: diff changeset	199 assert(lh < (int)_lh_neutral_value, "must look like an array layout");
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	200 assert(layout_helper_is_array(lh), "correct kind");
0 a61af66fc99e Initial load duke parents: diff changeset	201 assert(layout_helper_is_objArray(lh) == isobj, "correct kind");
a61af66fc99e Initial load duke parents: diff changeset	202 assert(layout_helper_is_typeArray(lh) == !isobj, "correct kind");
a61af66fc99e Initial load duke parents: diff changeset	203 assert(layout_helper_header_size(lh) == hsize, "correct decode");
a61af66fc99e Initial load duke parents: diff changeset	204 assert(layout_helper_element_type(lh) == etype, "correct decode");
a61af66fc99e Initial load duke parents: diff changeset	205 assert(1 << layout_helper_log2_element_size(lh) == esize, "correct decode");
a61af66fc99e Initial load duke parents: diff changeset	206
a61af66fc99e Initial load duke parents: diff changeset	207 return lh;
a61af66fc99e Initial load duke parents: diff changeset	208 }
a61af66fc99e Initial load duke parents: diff changeset	209
a61af66fc99e Initial load duke parents: diff changeset	210 bool Klass::can_be_primary_super_slow() const {
a61af66fc99e Initial load duke parents: diff changeset	211 if (super() == NULL)
a61af66fc99e Initial load duke parents: diff changeset	212 return true;
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	213 else if (super()->super_depth() >= primary_super_limit()-1)
0 a61af66fc99e Initial load duke parents: diff changeset	214 return false;
a61af66fc99e Initial load duke parents: diff changeset	215 else
a61af66fc99e Initial load duke parents: diff changeset	216 return true;
a61af66fc99e Initial load duke parents: diff changeset	217 }
a61af66fc99e Initial load duke parents: diff changeset	218
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	219 void Klass::initialize_supers(Klass* k, TRAPS) {
0 a61af66fc99e Initial load duke parents: diff changeset	220 if (FastSuperclassLimit == 0) {
a61af66fc99e Initial load duke parents: diff changeset	221 // None of the other machinery matters.
a61af66fc99e Initial load duke parents: diff changeset	222 set_super(k);
a61af66fc99e Initial load duke parents: diff changeset	223 return;
a61af66fc99e Initial load duke parents: diff changeset	224 }
a61af66fc99e Initial load duke parents: diff changeset	225 if (k == NULL) {
a61af66fc99e Initial load duke parents: diff changeset	226 set_super(NULL);
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	227 _primary_supers[0] = this;
0 a61af66fc99e Initial load duke parents: diff changeset	228 assert(super_depth() == 0, "Object must already be initialized properly");
1142 4ce7240d622c 6914300: ciEnv should export all well known classes never parents: 1039 diff changeset	229 } else if (k != super() \|\| k == SystemDictionary::Object_klass()) {
4ce7240d622c 6914300: ciEnv should export all well known classes never parents: 1039 diff changeset	230 assert(super() == NULL \|\| super() == SystemDictionary::Object_klass(),
0 a61af66fc99e Initial load duke parents: diff changeset	231 "initialize this only once to a non-trivial value");
a61af66fc99e Initial load duke parents: diff changeset	232 set_super(k);
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	233 Klass* sup = k;
0 a61af66fc99e Initial load duke parents: diff changeset	234 int sup_depth = sup->super_depth();
a61af66fc99e Initial load duke parents: diff changeset	235 juint my_depth = MIN2(sup_depth + 1, (int)primary_super_limit());
a61af66fc99e Initial load duke parents: diff changeset	236 if (!can_be_primary_super_slow())
a61af66fc99e Initial load duke parents: diff changeset	237 my_depth = primary_super_limit();
a61af66fc99e Initial load duke parents: diff changeset	238 for (juint i = 0; i < my_depth; i++) {
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	239 _primary_supers[i] = sup->_primary_supers[i];
0 a61af66fc99e Initial load duke parents: diff changeset	240 }
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	241 Klass* *super_check_cell;
0 a61af66fc99e Initial load duke parents: diff changeset	242 if (my_depth < primary_super_limit()) {
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	243 _primary_supers[my_depth] = this;
0 a61af66fc99e Initial load duke parents: diff changeset	244 super_check_cell = &_primary_supers[my_depth];
a61af66fc99e Initial load duke parents: diff changeset	245 } else {
a61af66fc99e Initial load duke parents: diff changeset	246 // Overflow of the primary_supers array forces me to be secondary.
a61af66fc99e Initial load duke parents: diff changeset	247 super_check_cell = &_secondary_super_cache;
a61af66fc99e Initial load duke parents: diff changeset	248 }
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	249 set_super_check_offset((address)super_check_cell - (address) this);
0 a61af66fc99e Initial load duke parents: diff changeset	250
a61af66fc99e Initial load duke parents: diff changeset	251 #ifdef ASSERT
a61af66fc99e Initial load duke parents: diff changeset	252 {
a61af66fc99e Initial load duke parents: diff changeset	253 juint j = super_depth();
a61af66fc99e Initial load duke parents: diff changeset	254 assert(j == my_depth, "computed accessor gets right answer");
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	255 Klass* t = this;
6983 070d523b96a7 8001471: Klass::cast() does nothing hseigel parents: 6867 diff changeset	256 while (!t->can_be_primary_super()) {
070d523b96a7 8001471: Klass::cast() does nothing hseigel parents: 6867 diff changeset	257 t = t->super();
070d523b96a7 8001471: Klass::cast() does nothing hseigel parents: 6867 diff changeset	258 j = t->super_depth();
0 a61af66fc99e Initial load duke parents: diff changeset	259 }
a61af66fc99e Initial load duke parents: diff changeset	260 for (juint j1 = j+1; j1 < primary_super_limit(); j1++) {
a61af66fc99e Initial load duke parents: diff changeset	261 assert(primary_super_of_depth(j1) == NULL, "super list padding");
a61af66fc99e Initial load duke parents: diff changeset	262 }
a61af66fc99e Initial load duke parents: diff changeset	263 while (t != NULL) {
a61af66fc99e Initial load duke parents: diff changeset	264 assert(primary_super_of_depth(j) == t, "super list initialization");
6983 070d523b96a7 8001471: Klass::cast() does nothing hseigel parents: 6867 diff changeset	265 t = t->super();
0 a61af66fc99e Initial load duke parents: diff changeset	266 --j;
a61af66fc99e Initial load duke parents: diff changeset	267 }
a61af66fc99e Initial load duke parents: diff changeset	268 assert(j == (juint)-1, "correct depth count");
a61af66fc99e Initial load duke parents: diff changeset	269 }
a61af66fc99e Initial load duke parents: diff changeset	270 #endif
a61af66fc99e Initial load duke parents: diff changeset	271 }
a61af66fc99e Initial load duke parents: diff changeset	272
a61af66fc99e Initial load duke parents: diff changeset	273 if (secondary_supers() == NULL) {
a61af66fc99e Initial load duke parents: diff changeset	274 KlassHandle this_kh (THREAD, this);
a61af66fc99e Initial load duke parents: diff changeset	275
a61af66fc99e Initial load duke parents: diff changeset	276 // Now compute the list of secondary supertypes.
a61af66fc99e Initial load duke parents: diff changeset	277 // Secondaries can occasionally be on the super chain,
a61af66fc99e Initial load duke parents: diff changeset	278 // if the inline "_primary_supers" array overflows.
a61af66fc99e Initial load duke parents: diff changeset	279 int extras = 0;
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	280 Klass* p;
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	281 for (p = super(); !(p == NULL \|\| p->can_be_primary_super()); p = p->super()) {
0 a61af66fc99e Initial load duke parents: diff changeset	282 ++extras;
a61af66fc99e Initial load duke parents: diff changeset	283 }
a61af66fc99e Initial load duke parents: diff changeset	284
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	285 ResourceMark rm(THREAD); // need to reclaim GrowableArrays allocated below
0 a61af66fc99e Initial load duke parents: diff changeset	286
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	287 // Compute the "real" non-extra secondaries.
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	288 GrowableArray<Klass> secondaries = compute_secondary_supers(extras);
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	289 if (secondaries == NULL) {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	290 // secondary_supers set by compute_secondary_supers
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	291 return;
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	292 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	293
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	294 GrowableArray<Klass> primaries = new GrowableArray<Klass*>(extras);
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	295
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	296 for (p = this_kh->super(); !(p == NULL \|\| p->can_be_primary_super()); p = p->super()) {
0 a61af66fc99e Initial load duke parents: diff changeset	297 int i; // Scan for overflow primaries being duplicates of 2nd'arys
a61af66fc99e Initial load duke parents: diff changeset	298
a61af66fc99e Initial load duke parents: diff changeset	299 // This happens frequently for very deeply nested arrays: the
a61af66fc99e Initial load duke parents: diff changeset	300 // primary superclass chain overflows into the secondary. The
a61af66fc99e Initial load duke parents: diff changeset	301 // secondary list contains the element_klass's secondaries with
a61af66fc99e Initial load duke parents: diff changeset	302 // an extra array dimension added. If the element_klass's
a61af66fc99e Initial load duke parents: diff changeset	303 // secondary list already contains some primary overflows, they
a61af66fc99e Initial load duke parents: diff changeset	304 // (with the extra level of array-ness) will collide with the
a61af66fc99e Initial load duke parents: diff changeset	305 // normal primary superclass overflows.
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	306 for( i = 0; i < secondaries->length(); i++ ) {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	307 if( secondaries->at(i) == p )
0 a61af66fc99e Initial load duke parents: diff changeset	308 break;
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	309 }
0 a61af66fc99e Initial load duke parents: diff changeset	310 if( i < secondaries->length() )
a61af66fc99e Initial load duke parents: diff changeset	311 continue; // It's a dup, don't put it in
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	312 primaries->push(p);
0 a61af66fc99e Initial load duke parents: diff changeset	313 }
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	314 // Combine the two arrays into a metadata object to pack the array.
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	315 // The primaries are added in the reverse order, then the secondaries.
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	316 int new_length = primaries->length() + secondaries->length();
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	317 Array<Klass> s2 = MetadataFactory::new_array<Klass*>(
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	318 class_loader_data(), new_length, CHECK);
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	319 int fill_p = primaries->length();
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	320 for (int j = 0; j < fill_p; j++) {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	321 s2->at_put(j, primaries->pop()); // add primaries in reverse order.
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	322 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	323 for( int j = 0; j < secondaries->length(); j++ ) {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	324 s2->at_put(j+fill_p, secondaries->at(j)); // add secondaries on the end.
0 a61af66fc99e Initial load duke parents: diff changeset	325 }
a61af66fc99e Initial load duke parents: diff changeset	326
a61af66fc99e Initial load duke parents: diff changeset	327 #ifdef ASSERT
a61af66fc99e Initial load duke parents: diff changeset	328 // We must not copy any NULL placeholders left over from bootstrap.
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	329 for (int j = 0; j < s2->length(); j++) {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	330 assert(s2->at(j) != NULL, "correct bootstrapping order");
0 a61af66fc99e Initial load duke parents: diff changeset	331 }
a61af66fc99e Initial load duke parents: diff changeset	332 #endif
a61af66fc99e Initial load duke parents: diff changeset	333
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	334 this_kh->set_secondary_supers(s2);
0 a61af66fc99e Initial load duke parents: diff changeset	335 }
a61af66fc99e Initial load duke parents: diff changeset	336 }
a61af66fc99e Initial load duke parents: diff changeset	337
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	338 GrowableArray<Klass> Klass::compute_secondary_supers(int num_extra_slots) {
0 a61af66fc99e Initial load duke parents: diff changeset	339 assert(num_extra_slots == 0, "override for complex klasses");
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	340 set_secondary_supers(Universe::the_empty_klass_array());
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	341 return NULL;
0 a61af66fc99e Initial load duke parents: diff changeset	342 }
a61af66fc99e Initial load duke parents: diff changeset	343
a61af66fc99e Initial load duke parents: diff changeset	344
a61af66fc99e Initial load duke parents: diff changeset	345 Klass* Klass::subklass() const {
6983 070d523b96a7 8001471: Klass::cast() does nothing hseigel parents: 6867 diff changeset	346 return _subklass == NULL ? NULL : _subklass;
0 a61af66fc99e Initial load duke parents: diff changeset	347 }
a61af66fc99e Initial load duke parents: diff changeset	348
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	349 InstanceKlass* Klass::superklass() const {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	350 assert(super() == NULL \|\| super()->oop_is_instance(), "must be instance klass");
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	351 return _super == NULL ? NULL : InstanceKlass::cast(_super);
0 a61af66fc99e Initial load duke parents: diff changeset	352 }
a61af66fc99e Initial load duke parents: diff changeset	353
a61af66fc99e Initial load duke parents: diff changeset	354 Klass* Klass::next_sibling() const {
6983 070d523b96a7 8001471: Klass::cast() does nothing hseigel parents: 6867 diff changeset	355 return _next_sibling == NULL ? NULL : _next_sibling;
0 a61af66fc99e Initial load duke parents: diff changeset	356 }
a61af66fc99e Initial load duke parents: diff changeset	357
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	358 void Klass::set_subklass(Klass* s) {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	359 assert(s != this, "sanity check");
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	360 _subklass = s;
0 a61af66fc99e Initial load duke parents: diff changeset	361 }
a61af66fc99e Initial load duke parents: diff changeset	362
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	363 void Klass::set_next_sibling(Klass* s) {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	364 assert(s != this, "sanity check");
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	365 _next_sibling = s;
0 a61af66fc99e Initial load duke parents: diff changeset	366 }
a61af66fc99e Initial load duke parents: diff changeset	367
a61af66fc99e Initial load duke parents: diff changeset	368 void Klass::append_to_sibling_list() {
6867 bdb5f8c9978b 7199068: NPG: SharedSkipVerify is meaningless coleenp parents: 6831 diff changeset	369 debug_only(verify();)
0 a61af66fc99e Initial load duke parents: diff changeset	370 // add ourselves to superklass' subklass list
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	371 InstanceKlass* super = superklass();
0 a61af66fc99e Initial load duke parents: diff changeset	372 if (super == NULL) return; // special case: class Object
6867 bdb5f8c9978b 7199068: NPG: SharedSkipVerify is meaningless coleenp parents: 6831 diff changeset	373 assert((!super->is_interface() // interfaces cannot be supers
0 a61af66fc99e Initial load duke parents: diff changeset	374 && (super->superklass() == NULL \|\| !is_interface())),
a61af66fc99e Initial load duke parents: diff changeset	375 "an interface can only be a subklass of Object");
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	376 Klass* prev_first_subklass = super->subklass_oop();
0 a61af66fc99e Initial load duke parents: diff changeset	377 if (prev_first_subklass != NULL) {
a61af66fc99e Initial load duke parents: diff changeset	378 // set our sibling to be the superklass' previous first subklass
a61af66fc99e Initial load duke parents: diff changeset	379 set_next_sibling(prev_first_subklass);
a61af66fc99e Initial load duke parents: diff changeset	380 }
a61af66fc99e Initial load duke parents: diff changeset	381 // make ourselves the superklass' first subklass
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	382 super->set_subklass(this);
6867 bdb5f8c9978b 7199068: NPG: SharedSkipVerify is meaningless coleenp parents: 6831 diff changeset	383 debug_only(verify();)
0 a61af66fc99e Initial load duke parents: diff changeset	384 }
a61af66fc99e Initial load duke parents: diff changeset	385
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	386 bool Klass::is_loader_alive(BoolObjectClosure* is_alive) {
7185 90273fc0a981 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap coleenp parents: 6983 diff changeset	387 #ifdef ASSERT
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	388 // The class is alive iff the class loader is alive.
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	389 oop loader = class_loader();
7185 90273fc0a981 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap coleenp parents: 6983 diff changeset	390 bool loader_alive = (loader == NULL) \|\| is_alive->do_object_b(loader);
90273fc0a981 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap coleenp parents: 6983 diff changeset	391 #endif // ASSERT
90273fc0a981 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap coleenp parents: 6983 diff changeset	392
90273fc0a981 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap coleenp parents: 6983 diff changeset	393 // The class is alive if it's mirror is alive (which should be marked if the
90273fc0a981 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap coleenp parents: 6983 diff changeset	394 // loader is alive) unless it's an anoymous class.
90273fc0a981 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap coleenp parents: 6983 diff changeset	395 bool mirror_alive = is_alive->do_object_b(java_mirror());
90273fc0a981 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap coleenp parents: 6983 diff changeset	396 assert(!mirror_alive \|\| loader_alive, "loader must be alive if the mirror is"
90273fc0a981 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap coleenp parents: 6983 diff changeset	397 " but not the other way around with anonymous classes");
90273fc0a981 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap coleenp parents: 6983 diff changeset	398 return mirror_alive;
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	399 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	400
20278 2c6ef90f030a 8049421: G1 Class Unloading after completing a concurrent mark cycle stefank parents: 20262 diff changeset	401 void Klass::clean_weak_klass_links(BoolObjectClosure* is_alive, bool clean_alive_klasses) {
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	402 if (!ClassUnloading) {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	403 return;
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	404 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	405
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	406 Klass* root = SystemDictionary::Object_klass();
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	407 Stack<Klass*, mtGC> stack;
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	408
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	409 stack.push(root);
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	410 while (!stack.is_empty()) {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	411 Klass* current = stack.pop();
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	412
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	413 assert(current->is_loader_alive(is_alive), "just checking, this should be live");
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	414
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	415 // Find and set the first alive subklass
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	416 Klass* sub = current->subklass_oop();
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	417 while (sub != NULL && !sub->is_loader_alive(is_alive)) {
0 a61af66fc99e Initial load duke parents: diff changeset	418 #ifndef PRODUCT
7185 90273fc0a981 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap coleenp parents: 6983 diff changeset	419 if (TraceClassUnloading && WizardMode) {
90273fc0a981 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap coleenp parents: 6983 diff changeset	420 ResourceMark rm;
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	421 tty->print_cr("[Unlinking class (subclass) %s]", sub->external_name());
7185 90273fc0a981 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap coleenp parents: 6983 diff changeset	422 }
0 a61af66fc99e Initial load duke parents: diff changeset	423 #endif
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	424 sub = sub->next_sibling_oop();
0 a61af66fc99e Initial load duke parents: diff changeset	425 }
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	426 current->set_subklass(sub);
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	427 if (sub != NULL) {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	428 stack.push(sub);
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	429 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	430
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	431 // Find and set the first alive sibling
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	432 Klass* sibling = current->next_sibling_oop();
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	433 while (sibling != NULL && !sibling->is_loader_alive(is_alive)) {
7185 90273fc0a981 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap coleenp parents: 6983 diff changeset	434 if (TraceClassUnloading && WizardMode) {
90273fc0a981 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap coleenp parents: 6983 diff changeset	435 ResourceMark rm;
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	436 tty->print_cr("[Unlinking class (sibling) %s]", sibling->external_name());
7185 90273fc0a981 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap coleenp parents: 6983 diff changeset	437 }
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	438 sibling = sibling->next_sibling_oop();
7185 90273fc0a981 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap coleenp parents: 6983 diff changeset	439 }
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	440 current->set_next_sibling(sibling);
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	441 if (sibling != NULL) {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	442 stack.push(sibling);
7185 90273fc0a981 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap coleenp parents: 6983 diff changeset	443 }
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	444
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	445 // Clean the implementors list and method data.
20278 2c6ef90f030a 8049421: G1 Class Unloading after completing a concurrent mark cycle stefank parents: 20262 diff changeset	446 if (clean_alive_klasses && current->oop_is_instance()) {
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	447 InstanceKlass* ik = InstanceKlass::cast(current);
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	448 ik->clean_implementors_list(is_alive);
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	449 ik->clean_method_data(is_alive);
0 a61af66fc99e Initial load duke parents: diff changeset	450 }
a61af66fc99e Initial load duke parents: diff changeset	451 }
a61af66fc99e Initial load duke parents: diff changeset	452 }
a61af66fc99e Initial load duke parents: diff changeset	453
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	454 void Klass::klass_update_barrier_set(oop v) {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	455 record_modified_oops();
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	456 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	457
20278 2c6ef90f030a 8049421: G1 Class Unloading after completing a concurrent mark cycle stefank parents: 20262 diff changeset	458 // This barrier is used by G1 to remember the old oop values, so
2c6ef90f030a 8049421: G1 Class Unloading after completing a concurrent mark cycle stefank parents: 20262 diff changeset	459 // that we don't forget any objects that were live at the snapshot at
2c6ef90f030a 8049421: G1 Class Unloading after completing a concurrent mark cycle stefank parents: 20262 diff changeset	460 // the beginning. This function is only used when we write oops into Klasses.
2c6ef90f030a 8049421: G1 Class Unloading after completing a concurrent mark cycle stefank parents: 20262 diff changeset	461 void Klass::klass_update_barrier_set_pre(oop* p, oop v) {
2c6ef90f030a 8049421: G1 Class Unloading after completing a concurrent mark cycle stefank parents: 20262 diff changeset	462 #if INCLUDE_ALL_GCS
2c6ef90f030a 8049421: G1 Class Unloading after completing a concurrent mark cycle stefank parents: 20262 diff changeset	463 if (UseG1GC) {
2c6ef90f030a 8049421: G1 Class Unloading after completing a concurrent mark cycle stefank parents: 20262 diff changeset	464 oop obj = *p;
2c6ef90f030a 8049421: G1 Class Unloading after completing a concurrent mark cycle stefank parents: 20262 diff changeset	465 if (obj != NULL) {
2c6ef90f030a 8049421: G1 Class Unloading after completing a concurrent mark cycle stefank parents: 20262 diff changeset	466 G1SATBCardTableModRefBS::enqueue(obj);
2c6ef90f030a 8049421: G1 Class Unloading after completing a concurrent mark cycle stefank parents: 20262 diff changeset	467 }
2c6ef90f030a 8049421: G1 Class Unloading after completing a concurrent mark cycle stefank parents: 20262 diff changeset	468 }
2c6ef90f030a 8049421: G1 Class Unloading after completing a concurrent mark cycle stefank parents: 20262 diff changeset	469 #endif
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	470 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	471
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	472 void Klass::klass_oop_store(oop* p, oop v) {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	473 assert(!Universe::heap()->is_in_reserved((void*)p), "Should store pointer into metadata");
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	474 assert(v == NULL \|\| Universe::heap()->is_in_reserved((void*)v), "Should store pointer to an object");
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	475
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	476 // do the store
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	477 if (always_do_update_barrier) {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	478 klass_oop_store((volatile oop*)p, v);
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	479 } else {
20278 2c6ef90f030a 8049421: G1 Class Unloading after completing a concurrent mark cycle stefank parents: 20262 diff changeset	480 klass_update_barrier_set_pre(p, v);
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	481 *p = v;
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	482 klass_update_barrier_set(v);
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	483 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	484 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	485
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	486 void Klass::klass_oop_store(volatile oop* p, oop v) {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	487 assert(!Universe::heap()->is_in_reserved((void*)p), "Should store pointer into metadata");
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	488 assert(v == NULL \|\| Universe::heap()->is_in_reserved((void*)v), "Should store pointer to an object");
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	489
20278 2c6ef90f030a 8049421: G1 Class Unloading after completing a concurrent mark cycle stefank parents: 20262 diff changeset	490 klass_update_barrier_set_pre((oop*)p, v); // Cast away volatile.
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	491 OrderAccess::release_store_ptr(p, v);
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	492 klass_update_barrier_set(v);
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	493 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	494
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	495 void Klass::oops_do(OopClosure* cl) {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	496 cl->do_oop(&_java_mirror);
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	497 }
0 a61af66fc99e Initial load duke parents: diff changeset	498
a61af66fc99e Initial load duke parents: diff changeset	499 void Klass::remove_unshareable_info() {
17883 9428a0b94204 8028497: SIGSEGV at ClassLoaderData::oops_do(OopClosure, KlassClosure, bool) coleenp parents: 17674 diff changeset	500 assert (DumpSharedSpaces, "only called for DumpSharedSpaces");
9428a0b94204 8028497: SIGSEGV at ClassLoaderData::oops_do(OopClosure, KlassClosure, bool) coleenp parents: 17674 diff changeset	501
0 a61af66fc99e Initial load duke parents: diff changeset	502 set_subklass(NULL);
a61af66fc99e Initial load duke parents: diff changeset	503 set_next_sibling(NULL);
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	504 // Clear the java mirror
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	505 set_java_mirror(NULL);
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	506 set_next_link(NULL);
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	507
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	508 // Null out class_loader_data because we don't share that yet.
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	509 set_class_loader_data(NULL);
0 a61af66fc99e Initial load duke parents: diff changeset	510 }
a61af66fc99e Initial load duke parents: diff changeset	511
20375 6e0cb14ce59b 8046070: Class Data Sharing clean up and refactoring iklam parents: 20278 diff changeset	512 void Klass::restore_unshareable_info(ClassLoaderData* loader_data, Handle protection_domain, TRAPS) {
17916 34862ced4a87 8041723: Event Based tracing ids to be reassigned for CDS klasses mgronlun parents: 17889 diff changeset	513 TRACE_INIT_ID(this);
17883 9428a0b94204 8028497: SIGSEGV at ClassLoaderData::oops_do(OopClosure, KlassClosure, bool) coleenp parents: 17674 diff changeset	514 // If an exception happened during CDS restore, some of these fields may already be
9428a0b94204 8028497: SIGSEGV at ClassLoaderData::oops_do(OopClosure, KlassClosure, bool) coleenp parents: 17674 diff changeset	515 // set. We leave the class on the CLD list, even if incomplete so that we don't
9428a0b94204 8028497: SIGSEGV at ClassLoaderData::oops_do(OopClosure, KlassClosure, bool) coleenp parents: 17674 diff changeset	516 // modify the CLD list outside a safepoint.
9428a0b94204 8028497: SIGSEGV at ClassLoaderData::oops_do(OopClosure, KlassClosure, bool) coleenp parents: 17674 diff changeset	517 if (class_loader_data() == NULL) {
20375 6e0cb14ce59b 8046070: Class Data Sharing clean up and refactoring iklam parents: 20278 diff changeset	518 // Restore class_loader_data
17883 9428a0b94204 8028497: SIGSEGV at ClassLoaderData::oops_do(OopClosure, KlassClosure, bool) coleenp parents: 17674 diff changeset	519 set_class_loader_data(loader_data);
0 a61af66fc99e Initial load duke parents: diff changeset	520
20375 6e0cb14ce59b 8046070: Class Data Sharing clean up and refactoring iklam parents: 20278 diff changeset	521 // Add to class loader list first before creating the mirror
17883 9428a0b94204 8028497: SIGSEGV at ClassLoaderData::oops_do(OopClosure, KlassClosure, bool) coleenp parents: 17674 diff changeset	522 // (same order as class file parsing)
9428a0b94204 8028497: SIGSEGV at ClassLoaderData::oops_do(OopClosure, KlassClosure, bool) coleenp parents: 17674 diff changeset	523 loader_data->add_class(this);
9428a0b94204 8028497: SIGSEGV at ClassLoaderData::oops_do(OopClosure, KlassClosure, bool) coleenp parents: 17674 diff changeset	524 }
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	525
20375 6e0cb14ce59b 8046070: Class Data Sharing clean up and refactoring iklam parents: 20278 diff changeset	526 // Recreate the class mirror.
17883 9428a0b94204 8028497: SIGSEGV at ClassLoaderData::oops_do(OopClosure, KlassClosure, bool) coleenp parents: 17674 diff changeset	527 // Only recreate it if not present. A previous attempt to restore may have
9428a0b94204 8028497: SIGSEGV at ClassLoaderData::oops_do(OopClosure, KlassClosure, bool) coleenp parents: 17674 diff changeset	528 // gotten an OOM later but keep the mirror if it was created.
9428a0b94204 8028497: SIGSEGV at ClassLoaderData::oops_do(OopClosure, KlassClosure, bool) coleenp parents: 17674 diff changeset	529 if (java_mirror() == NULL) {
20375 6e0cb14ce59b 8046070: Class Data Sharing clean up and refactoring iklam parents: 20278 diff changeset	530 java_lang_Class::create_mirror(this, protection_domain, CHECK);
17883 9428a0b94204 8028497: SIGSEGV at ClassLoaderData::oops_do(OopClosure, KlassClosure, bool) coleenp parents: 17674 diff changeset	531 }
2177 3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	532 }
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	533
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	534 Klass* Klass::array_klass_or_null(int rank) {
0 a61af66fc99e Initial load duke parents: diff changeset	535 EXCEPTION_MARK;
a61af66fc99e Initial load duke parents: diff changeset	536 // No exception can be thrown by array_klass_impl when called with or_null == true.
a61af66fc99e Initial load duke parents: diff changeset	537 // (In anycase, the execption mark will fail if it do so)
a61af66fc99e Initial load duke parents: diff changeset	538 return array_klass_impl(true, rank, THREAD);
a61af66fc99e Initial load duke parents: diff changeset	539 }
a61af66fc99e Initial load duke parents: diff changeset	540
a61af66fc99e Initial load duke parents: diff changeset	541
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	542 Klass* Klass::array_klass_or_null() {
0 a61af66fc99e Initial load duke parents: diff changeset	543 EXCEPTION_MARK;
a61af66fc99e Initial load duke parents: diff changeset	544 // No exception can be thrown by array_klass_impl when called with or_null == true.
a61af66fc99e Initial load duke parents: diff changeset	545 // (In anycase, the execption mark will fail if it do so)
a61af66fc99e Initial load duke parents: diff changeset	546 return array_klass_impl(true, THREAD);
a61af66fc99e Initial load duke parents: diff changeset	547 }
a61af66fc99e Initial load duke parents: diff changeset	548
a61af66fc99e Initial load duke parents: diff changeset	549
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	550 Klass* Klass::array_klass_impl(bool or_null, int rank, TRAPS) {
6831 d8ce2825b193 8000213: NPG: Should have renamed arrayKlass and typeArrayKlass coleenp parents: 6725 diff changeset	551 fatal("array_klass should be dispatched to InstanceKlass, ObjArrayKlass or TypeArrayKlass");
0 a61af66fc99e Initial load duke parents: diff changeset	552 return NULL;
a61af66fc99e Initial load duke parents: diff changeset	553 }
a61af66fc99e Initial load duke parents: diff changeset	554
a61af66fc99e Initial load duke parents: diff changeset	555
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	556 Klass* Klass::array_klass_impl(bool or_null, TRAPS) {
6831 d8ce2825b193 8000213: NPG: Should have renamed arrayKlass and typeArrayKlass coleenp parents: 6725 diff changeset	557 fatal("array_klass should be dispatched to InstanceKlass, ObjArrayKlass or TypeArrayKlass");
0 a61af66fc99e Initial load duke parents: diff changeset	558 return NULL;
a61af66fc99e Initial load duke parents: diff changeset	559 }
a61af66fc99e Initial load duke parents: diff changeset	560
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	561 oop Klass::class_loader() const { return class_loader_data()->class_loader(); }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	562
0 a61af66fc99e Initial load duke parents: diff changeset	563 const char* Klass::external_name() const {
431 a45484ea312d 6653858: dynamic languages need to be able to load anonymous classes jrose parents: 196 diff changeset	564 if (oop_is_instance()) {
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	565 InstanceKlass* ik = (InstanceKlass*) this;
431 a45484ea312d 6653858: dynamic languages need to be able to load anonymous classes jrose parents: 196 diff changeset	566 if (ik->is_anonymous()) {
2416 38fea01eb669 6817525: turn on method handle functionality by default for JSR 292 twisti parents: 2177 diff changeset	567 assert(EnableInvokeDynamic, "");
7185 90273fc0a981 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap coleenp parents: 6983 diff changeset	568 intptr_t hash = 0;
90273fc0a981 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap coleenp parents: 6983 diff changeset	569 if (ik->java_mirror() != NULL) {
90273fc0a981 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap coleenp parents: 6983 diff changeset	570 // java_mirror might not be created yet, return 0 as hash.
90273fc0a981 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap coleenp parents: 6983 diff changeset	571 hash = ik->java_mirror()->identity_hash();
90273fc0a981 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap coleenp parents: 6983 diff changeset	572 }
431 a45484ea312d 6653858: dynamic languages need to be able to load anonymous classes jrose parents: 196 diff changeset	573 char hash_buf[40];
a45484ea312d 6653858: dynamic languages need to be able to load anonymous classes jrose parents: 196 diff changeset	574 sprintf(hash_buf, "/" UINTX_FORMAT, (uintx)hash);
a45484ea312d 6653858: dynamic languages need to be able to load anonymous classes jrose parents: 196 diff changeset	575 size_t hash_len = strlen(hash_buf);
a45484ea312d 6653858: dynamic languages need to be able to load anonymous classes jrose parents: 196 diff changeset	576
a45484ea312d 6653858: dynamic languages need to be able to load anonymous classes jrose parents: 196 diff changeset	577 size_t result_len = name()->utf8_length();
a45484ea312d 6653858: dynamic languages need to be able to load anonymous classes jrose parents: 196 diff changeset	578 char* result = NEW_RESOURCE_ARRAY(char, result_len + hash_len + 1);
a45484ea312d 6653858: dynamic languages need to be able to load anonymous classes jrose parents: 196 diff changeset	579 name()->as_klass_external_name(result, (int) result_len + 1);
a45484ea312d 6653858: dynamic languages need to be able to load anonymous classes jrose parents: 196 diff changeset	580 assert(strlen(result) == result_len, "");
a45484ea312d 6653858: dynamic languages need to be able to load anonymous classes jrose parents: 196 diff changeset	581 strcpy(result + result_len, hash_buf);
a45484ea312d 6653858: dynamic languages need to be able to load anonymous classes jrose parents: 196 diff changeset	582 assert(strlen(result) == result_len + hash_len, "");
a45484ea312d 6653858: dynamic languages need to be able to load anonymous classes jrose parents: 196 diff changeset	583 return result;
a45484ea312d 6653858: dynamic languages need to be able to load anonymous classes jrose parents: 196 diff changeset	584 }
a45484ea312d 6653858: dynamic languages need to be able to load anonymous classes jrose parents: 196 diff changeset	585 }
1039 987e948ebbc8 6815692: method handle code needs some cleanup (post-6655638) jrose parents: 605 diff changeset	586 if (name() == NULL) return "<unknown>";
0 a61af66fc99e Initial load duke parents: diff changeset	587 return name()->as_klass_external_name();
a61af66fc99e Initial load duke parents: diff changeset	588 }
a61af66fc99e Initial load duke parents: diff changeset	589
a61af66fc99e Initial load duke parents: diff changeset	590
1039 987e948ebbc8 6815692: method handle code needs some cleanup (post-6655638) jrose parents: 605 diff changeset	591 const char* Klass::signature_name() const {
987e948ebbc8 6815692: method handle code needs some cleanup (post-6655638) jrose parents: 605 diff changeset	592 if (name() == NULL) return "<unknown>";
0 a61af66fc99e Initial load duke parents: diff changeset	593 return name()->as_C_string();
a61af66fc99e Initial load duke parents: diff changeset	594 }
a61af66fc99e Initial load duke parents: diff changeset	595
a61af66fc99e Initial load duke parents: diff changeset	596 // Unless overridden, modifier_flags is 0.
a61af66fc99e Initial load duke parents: diff changeset	597 jint Klass::compute_modifier_flags(TRAPS) const {
a61af66fc99e Initial load duke parents: diff changeset	598 return 0;
a61af66fc99e Initial load duke parents: diff changeset	599 }
a61af66fc99e Initial load duke parents: diff changeset	600
a61af66fc99e Initial load duke parents: diff changeset	601 int Klass::atomic_incr_biased_lock_revocation_count() {
a61af66fc99e Initial load duke parents: diff changeset	602 return (int) Atomic::add(1, &_biased_lock_revocation_count);
a61af66fc99e Initial load duke parents: diff changeset	603 }
a61af66fc99e Initial load duke parents: diff changeset	604
a61af66fc99e Initial load duke parents: diff changeset	605 // Unless overridden, jvmti_class_status has no flags set.
a61af66fc99e Initial load duke parents: diff changeset	606 jint Klass::jvmti_class_status() const {
a61af66fc99e Initial load duke parents: diff changeset	607 return 0;
a61af66fc99e Initial load duke parents: diff changeset	608 }
a61af66fc99e Initial load duke parents: diff changeset	609
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	610
0 a61af66fc99e Initial load duke parents: diff changeset	611 // Printing
a61af66fc99e Initial load duke parents: diff changeset	612
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	613 void Klass::print_on(outputStream* st) const {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	614 ResourceMark rm;
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	615 // print title
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	616 st->print("%s", internal_name());
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	617 print_address_on(st);
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	618 st->cr();
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	619 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	620
0 a61af66fc99e Initial load duke parents: diff changeset	621 void Klass::oop_print_on(oop obj, outputStream* st) {
a61af66fc99e Initial load duke parents: diff changeset	622 ResourceMark rm;
a61af66fc99e Initial load duke parents: diff changeset	623 // print title
a61af66fc99e Initial load duke parents: diff changeset	624 st->print_cr("%s ", internal_name());
a61af66fc99e Initial load duke parents: diff changeset	625 obj->print_address_on(st);
a61af66fc99e Initial load duke parents: diff changeset	626
a61af66fc99e Initial load duke parents: diff changeset	627 if (WizardMode) {
a61af66fc99e Initial load duke parents: diff changeset	628 // print header
a61af66fc99e Initial load duke parents: diff changeset	629 obj->mark()->print_on(st);
a61af66fc99e Initial load duke parents: diff changeset	630 }
a61af66fc99e Initial load duke parents: diff changeset	631
a61af66fc99e Initial load duke parents: diff changeset	632 // print class
a61af66fc99e Initial load duke parents: diff changeset	633 st->print(" - klass: ");
a61af66fc99e Initial load duke parents: diff changeset	634 obj->klass()->print_value_on(st);
a61af66fc99e Initial load duke parents: diff changeset	635 st->cr();
a61af66fc99e Initial load duke parents: diff changeset	636 }
a61af66fc99e Initial load duke parents: diff changeset	637
a61af66fc99e Initial load duke parents: diff changeset	638 void Klass::oop_print_value_on(oop obj, outputStream* st) {
a61af66fc99e Initial load duke parents: diff changeset	639 // print title
a61af66fc99e Initial load duke parents: diff changeset	640 ResourceMark rm; // Cannot print in debug mode without this
a61af66fc99e Initial load duke parents: diff changeset	641 st->print("%s", internal_name());
a61af66fc99e Initial load duke parents: diff changeset	642 obj->print_address_on(st);
a61af66fc99e Initial load duke parents: diff changeset	643 }
a61af66fc99e Initial load duke parents: diff changeset	644
7956 16fb9f942703 6479360: PrintClassHistogram improvements acorn parents: 7185 diff changeset	645 #if INCLUDE_SERVICES
16fb9f942703 6479360: PrintClassHistogram improvements acorn parents: 7185 diff changeset	646 // Size Statistics
16fb9f942703 6479360: PrintClassHistogram improvements acorn parents: 7185 diff changeset	647 void Klass::collect_statistics(KlassSizeStats *sz) const {
16fb9f942703 6479360: PrintClassHistogram improvements acorn parents: 7185 diff changeset	648 sz->_klass_bytes = sz->count(this);
16fb9f942703 6479360: PrintClassHistogram improvements acorn parents: 7185 diff changeset	649 sz->_mirror_bytes = sz->count(java_mirror());
16fb9f942703 6479360: PrintClassHistogram improvements acorn parents: 7185 diff changeset	650 sz->_secondary_supers_bytes = sz->count_array(secondary_supers());
16fb9f942703 6479360: PrintClassHistogram improvements acorn parents: 7185 diff changeset	651
16fb9f942703 6479360: PrintClassHistogram improvements acorn parents: 7185 diff changeset	652 sz->_ro_bytes += sz->_secondary_supers_bytes;
16fb9f942703 6479360: PrintClassHistogram improvements acorn parents: 7185 diff changeset	653 sz->_rw_bytes += sz->_klass_bytes + sz->_mirror_bytes;
16fb9f942703 6479360: PrintClassHistogram improvements acorn parents: 7185 diff changeset	654 }
16fb9f942703 6479360: PrintClassHistogram improvements acorn parents: 7185 diff changeset	655 #endif // INCLUDE_SERVICES
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	656
0 a61af66fc99e Initial load duke parents: diff changeset	657 // Verification
a61af66fc99e Initial load duke parents: diff changeset	658
17674 85318d1fe8fe 8027146: Class loading verification failure if GC occurs in Universe::flush_dependents_on coleenp parents: 17663 diff changeset	659 void Klass::verify_on(outputStream* st) {
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	660
11034 e0c9a1d29eb4 8016325: JVM hangs verifying system dictionary coleenp parents: 10405 diff changeset	661 // This can be expensive, but it is worth checking that this klass is actually
e0c9a1d29eb4 8016325: JVM hangs verifying system dictionary coleenp parents: 10405 diff changeset	662 // in the CLD graph but not in production.
17935 7384f6a12fc1 8038212: Method::is_valid_method() check has performance regression impact for stackwalking coleenp parents: 17916 diff changeset	663 assert(Metaspace::contains((address)this), "Should be");
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	664
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	665 guarantee(this->is_klass(),"should be klass");
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	666
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	667 if (super() != NULL) {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	668 guarantee(super()->is_klass(), "should be klass");
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	669 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	670 if (secondary_super_cache() != NULL) {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	671 Klass* ko = secondary_super_cache();
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	672 guarantee(ko->is_klass(), "should be klass");
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	673 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	674 for ( uint i = 0; i < primary_super_limit(); i++ ) {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	675 Klass* ko = _primary_supers[i];
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	676 if (ko != NULL) {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	677 guarantee(ko->is_klass(), "should be klass");
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	678 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	679 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	680
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	681 if (java_mirror() != NULL) {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	682 guarantee(java_mirror()->is_oop(), "should be instance");
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	683 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	684 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	685
0 a61af66fc99e Initial load duke parents: diff changeset	686 void Klass::oop_verify_on(oop obj, outputStream* st) {
a61af66fc99e Initial load duke parents: diff changeset	687 guarantee(obj->is_oop(), "should be oop");
a61af66fc99e Initial load duke parents: diff changeset	688 guarantee(obj->klass()->is_klass(), "klass field is not a klass");
a61af66fc99e Initial load duke parents: diff changeset	689 }
a61af66fc99e Initial load duke parents: diff changeset	690
a61af66fc99e Initial load duke parents: diff changeset	691 #ifndef PRODUCT
a61af66fc99e Initial load duke parents: diff changeset	692
12264 b2e698d2276c 8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation drchase parents: 12146 diff changeset	693 bool Klass::verify_vtable_index(int i) {
0 a61af66fc99e Initial load duke parents: diff changeset	694 if (oop_is_instance()) {
12264 b2e698d2276c 8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation drchase parents: 12146 diff changeset	695 int limit = ((InstanceKlass*)this)->vtable_length()/vtableEntry::size();
b2e698d2276c 8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation drchase parents: 12146 diff changeset	696 assert(i >= 0 && i < limit, err_msg("index %d out of bounds %d", i, limit));
0 a61af66fc99e Initial load duke parents: diff changeset	697 } else {
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	698 assert(oop_is_array(), "Must be");
12264 b2e698d2276c 8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation drchase parents: 12146 diff changeset	699 int limit = ((ArrayKlass*)this)->vtable_length()/vtableEntry::size();
b2e698d2276c 8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation drchase parents: 12146 diff changeset	700 assert(i >= 0 && i < limit, err_msg("index %d out of bounds %d", i, limit));
0 a61af66fc99e Initial load duke parents: diff changeset	701 }
12264 b2e698d2276c 8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation drchase parents: 12146 diff changeset	702 return true;
b2e698d2276c 8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation drchase parents: 12146 diff changeset	703 }
b2e698d2276c 8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation drchase parents: 12146 diff changeset	704
b2e698d2276c 8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation drchase parents: 12146 diff changeset	705 bool Klass::verify_itable_index(int i) {
b2e698d2276c 8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation drchase parents: 12146 diff changeset	706 assert(oop_is_instance(), "");
b2e698d2276c 8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation drchase parents: 12146 diff changeset	707 int method_count = klassItable::method_count_for_interface(this);
b2e698d2276c 8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation drchase parents: 12146 diff changeset	708 assert(i >= 0 && i < method_count, "index out of bounds");
b2e698d2276c 8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation drchase parents: 12146 diff changeset	709 return true;
0 a61af66fc99e Initial load duke parents: diff changeset	710 }
a61af66fc99e Initial load duke parents: diff changeset	711
a61af66fc99e Initial load duke parents: diff changeset	712 #endif
20262 76b588255908 8035746: Add missing Klass::oop_is_instanceClassLoader() function stefank parents: 20197 diff changeset	713
76b588255908 8035746: Add missing Klass::oop_is_instanceClassLoader() function stefank parents: 20197 diff changeset	714 /////////////// Unit tests ///////////////
76b588255908 8035746: Add missing Klass::oop_is_instanceClassLoader() function stefank parents: 20197 diff changeset	715
76b588255908 8035746: Add missing Klass::oop_is_instanceClassLoader() function stefank parents: 20197 diff changeset	716 #ifndef PRODUCT
76b588255908 8035746: Add missing Klass::oop_is_instanceClassLoader() function stefank parents: 20197 diff changeset	717
76b588255908 8035746: Add missing Klass::oop_is_instanceClassLoader() function stefank parents: 20197 diff changeset	718 class TestKlass {
76b588255908 8035746: Add missing Klass::oop_is_instanceClassLoader() function stefank parents: 20197 diff changeset	719 public:
76b588255908 8035746: Add missing Klass::oop_is_instanceClassLoader() function stefank parents: 20197 diff changeset	720 static void test_oop_is_instanceClassLoader() {
76b588255908 8035746: Add missing Klass::oop_is_instanceClassLoader() function stefank parents: 20197 diff changeset	721 assert(SystemDictionary::ClassLoader_klass()->oop_is_instanceClassLoader(), "assert");
76b588255908 8035746: Add missing Klass::oop_is_instanceClassLoader() function stefank parents: 20197 diff changeset	722 assert(!SystemDictionary::String_klass()->oop_is_instanceClassLoader(), "assert");
76b588255908 8035746: Add missing Klass::oop_is_instanceClassLoader() function stefank parents: 20197 diff changeset	723 }
76b588255908 8035746: Add missing Klass::oop_is_instanceClassLoader() function stefank parents: 20197 diff changeset	724 };
76b588255908 8035746: Add missing Klass::oop_is_instanceClassLoader() function stefank parents: 20197 diff changeset	725
76b588255908 8035746: Add missing Klass::oop_is_instanceClassLoader() function stefank parents: 20197 diff changeset	726 void TestKlass_test() {
76b588255908 8035746: Add missing Klass::oop_is_instanceClassLoader() function stefank parents: 20197 diff changeset	727 TestKlass::test_oop_is_instanceClassLoader();
76b588255908 8035746: Add missing Klass::oop_is_instanceClassLoader() function stefank parents: 20197 diff changeset	728 }
76b588255908 8035746: Add missing Klass::oop_is_instanceClassLoader() function stefank parents: 20197 diff changeset	729
76b588255908 8035746: Add missing Klass::oop_is_instanceClassLoader() function stefank parents: 20197 diff changeset	730 #endif

Mercurial > hg > truffle

annotate src/share/vm/oops/klass.cpp @ 20375:6e0cb14ce59b