jdk8-mips64-public/hotspot: src/share/vm/oops/cpCacheKlass.cpp@246d977b51f2

7178670: runtime/7158800/BadUtf8.java fails in SymbolTable::rehash_table
Summary: Cannot delete _buckets and HashtableEntries in shared space (CDS)
Reviewed-by: acorn, kvn, dlong, dcubed, kamg

     1 /*

     2  * Copyright (c) 1998, 2011, Oracle and/or its affiliates. All rights reserved.

     3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

     4  *

     5  * This code is free software; you can redistribute it and/or modify it

     6  * under the terms of the GNU General Public License version 2 only, as

     7  * published by the Free Software Foundation.

     8  *

     9  * This code is distributed in the hope that it will be useful, but WITHOUT

    10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

    11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

    12  * version 2 for more details (a copy is included in the LICENSE file that

    13  * accompanied this code).

    14  *

    15  * You should have received a copy of the GNU General Public License version

    16  * 2 along with this work; if not, write to the Free Software Foundation,

    17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

    18  *

    19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

    20  * or visit www.oracle.com if you need additional information or have any

    21  * questions.

    22  *

    23  */

    25 #include "precompiled.hpp"

    26 #include "classfile/javaClasses.hpp"

    27 #include "gc_implementation/shared/markSweep.inline.hpp"

    28 #include "gc_interface/collectedHeap.hpp"

    29 #include "interpreter/bytecodes.hpp"

    30 #include "memory/genOopClosures.inline.hpp"

    31 #include "memory/permGen.hpp"

    32 #include "oops/constantPoolOop.hpp"

    33 #include "oops/cpCacheKlass.hpp"

    34 #include "oops/oop.inline.hpp"

    35 #include "runtime/handles.inline.hpp"

    36 #ifndef SERIALGC

    37 #include "gc_implementation/parNew/parOopClosures.inline.hpp"

    38 #include "gc_implementation/parallelScavenge/psPromotionManager.inline.hpp"

    39 #include "gc_implementation/parallelScavenge/psScavenge.inline.hpp"

    40 #include "memory/cardTableRS.hpp"

    41 #include "oops/oop.pcgc.inline.hpp"

    42 #endif

    45 int constantPoolCacheKlass::oop_size(oop obj) const {

    46   assert(obj->is_constantPoolCache(), "must be constantPool");

    47   return constantPoolCacheOop(obj)->object_size();

    48 }

    51 constantPoolCacheOop constantPoolCacheKlass::allocate(int length,

    52                                                       TRAPS) {

    53   // allocate memory

    54   int size = constantPoolCacheOopDesc::object_size(length);

    56   KlassHandle klass (THREAD, as_klassOop());

    58   // Commented out below is the original code.  The code from

    59   // permanent_obj_allocate() was in-lined so that we could

    60   // set the _length field, necessary to correctly compute its

    61   // size(), before setting its klass word further below.

    62   // constantPoolCacheOop cache = (constantPoolCacheOop)

    63   //   CollectedHeap::permanent_obj_allocate(klass, size, CHECK_NULL);

    65   oop obj = CollectedHeap::permanent_obj_allocate_no_klass_install(klass, size, CHECK_NULL);

    66 #ifndef PRODUCT

    67   const size_t hs = oopDesc::header_size();

    68   Universe::heap()->check_for_bad_heap_word_value(((HeapWord*) obj)+hs, size-hs);

    69 #endif

    70   constantPoolCacheOop cache = (constantPoolCacheOop) obj;

    71   assert(!UseConcMarkSweepGC || obj->klass_or_null() == NULL,

    72          "klass should be NULL here when using CMS");

    73   cache->set_length(length);  // should become visible before klass is set below.

    74   cache->set_constant_pool(NULL);

    76   OrderAccess::storestore();

    77   obj->set_klass(klass());

    78   assert(cache->size() == size, "Incorrect cache->size()");

    79   return cache;

    80 }

    82 klassOop constantPoolCacheKlass::create_klass(TRAPS) {

    83   constantPoolCacheKlass o;

    84   KlassHandle h_this_klass(THREAD, Universe::klassKlassObj());

    85   KlassHandle k = base_create_klass(h_this_klass, header_size(), o.vtbl_value(), CHECK_NULL);

    86   // Make sure size calculation is right

    87   assert(k()->size() == align_object_size(header_size()), "wrong size for object");

    88   java_lang_Class::create_mirror(k, CHECK_NULL); // Allocate mirror

    89   return k();

    90 }

    93 void constantPoolCacheKlass::oop_follow_contents(oop obj) {

    94   assert(obj->is_constantPoolCache(), "obj must be constant pool cache");

    95   constantPoolCacheOop cache = (constantPoolCacheOop)obj;

    96   // Performance tweak: We skip iterating over the klass pointer since we

    97   // know that Universe::constantPoolCacheKlassObj never moves.

    98   // gc of constant pool cache instance variables

    99   MarkSweep::mark_and_push((oop*)cache->constant_pool_addr());

   100   // gc of constant pool cache entries

   101   int i = cache->length();

   102   while (i-- > 0) cache->entry_at(i)->follow_contents();

   103 }

   105 #ifndef SERIALGC

   106 void constantPoolCacheKlass::oop_follow_contents(ParCompactionManager* cm,

   107                                                  oop obj) {

   108   assert(obj->is_constantPoolCache(), "obj must be constant pool cache");

   109   constantPoolCacheOop cache = (constantPoolCacheOop)obj;

   110   // Performance tweak: We skip iterating over the klass pointer since we

   111   // know that Universe::constantPoolCacheKlassObj never moves.

   112   // gc of constant pool cache instance variables

   113   PSParallelCompact::mark_and_push(cm, (oop*)cache->constant_pool_addr());

   114   // gc of constant pool cache entries

   115   int i = cache->length();

   116   while (i-- > 0) cache->entry_at(i)->follow_contents(cm);

   117 }

   118 #endif // SERIALGC

   121 int constantPoolCacheKlass::oop_oop_iterate(oop obj, OopClosure* blk) {

   122   assert(obj->is_constantPoolCache(), "obj must be constant pool cache");

   123   constantPoolCacheOop cache = (constantPoolCacheOop)obj;

   124   // Get size before changing pointers.

   125   // Don't call size() or oop_size() since that is a virtual call.

   126   int size = cache->object_size();

   127   // Performance tweak: We skip iterating over the klass pointer since we

   128   // know that Universe::constantPoolCacheKlassObj never moves.

   129   // iteration over constant pool cache instance variables

   130   blk->do_oop((oop*)cache->constant_pool_addr());

   131   // iteration over constant pool cache entries

   132   for (int i = 0; i < cache->length(); i++) cache->entry_at(i)->oop_iterate(blk);

   133   return size;

   134 }

   137 int constantPoolCacheKlass::oop_oop_iterate_m(oop obj, OopClosure* blk, MemRegion mr) {

   138   assert(obj->is_constantPoolCache(), "obj must be constant pool cache");

   139   constantPoolCacheOop cache = (constantPoolCacheOop)obj;

   140   // Get size before changing pointers.

   141   // Don't call size() or oop_size() since that is a virtual call.

   142   int size = cache->object_size();

   143   // Performance tweak: We skip iterating over the klass pointer since we

   144   // know that Universe::constantPoolCacheKlassObj never moves.

   145   // iteration over constant pool cache instance variables

   146   oop* addr = (oop*)cache->constant_pool_addr();

   147   if (mr.contains(addr)) blk->do_oop(addr);

   148   // iteration over constant pool cache entries

   149   for (int i = 0; i < cache->length(); i++) cache->entry_at(i)->oop_iterate_m(blk, mr);

   150   return size;

   151 }

   153 int constantPoolCacheKlass::oop_adjust_pointers(oop obj) {

   154   assert(obj->is_constantPoolCache(), "obj must be constant pool cache");

   155   constantPoolCacheOop cache = (constantPoolCacheOop)obj;

   156   // Get size before changing pointers.

   157   // Don't call size() or oop_size() since that is a virtual call.

   158   int size = cache->object_size();

   159   // Performance tweak: We skip iterating over the klass pointer since we

   160   // know that Universe::constantPoolCacheKlassObj never moves.

   161   // Iteration over constant pool cache instance variables

   162   MarkSweep::adjust_pointer((oop*)cache->constant_pool_addr());

   163   // iteration over constant pool cache entries

   164   for (int i = 0; i < cache->length(); i++)

   165     cache->entry_at(i)->adjust_pointers();

   166   return size;

   167 }

   169 #ifndef SERIALGC

   170 void constantPoolCacheKlass::oop_push_contents(PSPromotionManager* pm,

   171                                                oop obj) {

   172   assert(obj->is_constantPoolCache(), "should be constant pool");

   173   if (ScavengeRootsInCode) {

   174     constantPoolCacheOop cache = (constantPoolCacheOop)obj;

   175     // during a scavenge, it is safe to inspect my pool, since it is perm

   176     constantPoolOop pool = cache->constant_pool();

   177     assert(pool->is_constantPool(), "should be constant pool");

   178     for (int i = 0; i < cache->length(); i++) {

   179       ConstantPoolCacheEntry* e = cache->entry_at(i);

   180       oop* p = (oop*)&e->_f1;

   181       if (PSScavenge::should_scavenge(p))

   182         pm->claim_or_forward_depth(p);

   183       assert(!(e->is_vfinal() && PSScavenge::should_scavenge((oop*)&e->_f2)),

   184              "no live oops here");

   185     }

   186   }

   187 }

   189 int

   190 constantPoolCacheKlass::oop_update_pointers(ParCompactionManager* cm, oop obj) {

   191   assert(obj->is_constantPoolCache(), "obj must be constant pool cache");

   192   constantPoolCacheOop cache = (constantPoolCacheOop)obj;

   194   // Iteration over constant pool cache instance variables

   195   PSParallelCompact::adjust_pointer((oop*)cache->constant_pool_addr());

   197   // iteration over constant pool cache entries

   198   for (int i = 0; i < cache->length(); ++i) {

   199     cache->entry_at(i)->update_pointers();

   200   }

   202   return cache->object_size();

   203 }

   204 #endif // SERIALGC

   206 void constantPoolCacheKlass::oop_print_on(oop obj, outputStream* st) {

   207   assert(obj->is_constantPoolCache(), "obj must be constant pool cache");

   208   constantPoolCacheOop cache = (constantPoolCacheOop)obj;

   209   // super print

   210   Klass::oop_print_on(obj, st);

   211   // print constant pool cache entries

   212   for (int i = 0; i < cache->length(); i++) cache->entry_at(i)->print(st, i);

   213 }

   215 void constantPoolCacheKlass::oop_print_value_on(oop obj, outputStream* st) {

   216   assert(obj->is_constantPoolCache(), "obj must be constant pool cache");

   217   constantPoolCacheOop cache = (constantPoolCacheOop)obj;

   218   st->print("cache [%d]", cache->length());

   219   cache->print_address_on(st);

   220   st->print(" for ");

   221   cache->constant_pool()->print_value_on(st);

   222 }

   224 void constantPoolCacheKlass::oop_verify_on(oop obj, outputStream* st) {

   225   guarantee(obj->is_constantPoolCache(), "obj must be constant pool cache");

   226   constantPoolCacheOop cache = (constantPoolCacheOop)obj;

   227   // super verify

   228   Klass::oop_verify_on(obj, st);

   229   // print constant pool cache entries

   230   for (int i = 0; i < cache->length(); i++) cache->entry_at(i)->verify(st);

   231 }

   234 const char* constantPoolCacheKlass::internal_name() const {

   235   return "{constant pool cache}";

   236 }

Mercurial > jdk8-mips64-public > hotspot / file revision

src/share/vm/oops/cpCacheKlass.cpp@246d977b51f2

src/share/vm/oops/cpCacheKlass.cpp