author | stefank |
Tue, 08 Feb 2011 12:33:19 +0100 | |
changeset 8297 | f05d10c1c4b8 |
parent 8296 | b1c2163e4e59 |
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permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 1998, 2011, Oracle and/or its affiliates. All rights reserved. |
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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* |
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* This code is free software; you can redistribute it and/or modify it |
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* under the terms of the GNU General Public License version 2 only, as |
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* published by the Free Software Foundation. |
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* |
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* This code is distributed in the hope that it will be useful, but WITHOUT |
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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* version 2 for more details (a copy is included in the LICENSE file that |
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* accompanied this code). |
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* |
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* You should have received a copy of the GNU General Public License version |
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* 2 along with this work; if not, write to the Free Software Foundation, |
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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* |
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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* or visit www.oracle.com if you need additional information or have any |
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* questions. |
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* |
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*/ |
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#include "precompiled.hpp" |
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#include "classfile/javaClasses.hpp" |
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#include "gc_implementation/shared/markSweep.inline.hpp" |
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#include "gc_interface/collectedHeap.hpp" |
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#include "interpreter/bytecodes.hpp" |
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#include "memory/genOopClosures.inline.hpp" |
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#include "memory/permGen.hpp" |
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#include "oops/constantPoolOop.hpp" |
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#include "oops/cpCacheKlass.hpp" |
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#include "oops/oop.inline.hpp" |
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#include "runtime/handles.inline.hpp" |
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#ifndef SERIALGC |
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#include "gc_implementation/parNew/parOopClosures.inline.hpp" |
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#include "gc_implementation/parallelScavenge/psPromotionManager.inline.hpp" |
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#include "gc_implementation/parallelScavenge/psScavenge.inline.hpp" |
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#include "memory/cardTableRS.hpp" |
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#include "oops/oop.pcgc.inline.hpp" |
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#endif |
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int constantPoolCacheKlass::oop_size(oop obj) const { |
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assert(obj->is_constantPoolCache(), "must be constantPool"); |
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return constantPoolCacheOop(obj)->object_size(); |
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} |
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constantPoolCacheOop constantPoolCacheKlass::allocate(int length, |
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TRAPS) { |
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// allocate memory |
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int size = constantPoolCacheOopDesc::object_size(length); |
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KlassHandle klass (THREAD, as_klassOop()); |
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// Commented out below is the original code. The code from |
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// permanent_obj_allocate() was in-lined so that we could |
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// set the _length field, necessary to correctly compute its |
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// size(), before setting its klass word further below. |
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// constantPoolCacheOop cache = (constantPoolCacheOop) |
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// CollectedHeap::permanent_obj_allocate(klass, size, CHECK_NULL); |
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oop obj = CollectedHeap::permanent_obj_allocate_no_klass_install(klass, size, CHECK_NULL); |
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NOT_PRODUCT(Universe::heap()->check_for_bad_heap_word_value((HeapWord*) obj, |
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size)); |
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constantPoolCacheOop cache = (constantPoolCacheOop) obj; |
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assert(!UseConcMarkSweepGC || obj->klass_or_null() == NULL, |
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"klass should be NULL here when using CMS"); |
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cache->set_length(length); // should become visible before klass is set below. |
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cache->set_constant_pool(NULL); |
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OrderAccess::storestore(); |
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obj->set_klass(klass()); |
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assert(cache->size() == size, "Incorrect cache->size()"); |
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return cache; |
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} |
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klassOop constantPoolCacheKlass::create_klass(TRAPS) { |
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constantPoolCacheKlass o; |
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KlassHandle h_this_klass(THREAD, Universe::klassKlassObj()); |
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KlassHandle k = base_create_klass(h_this_klass, header_size(), o.vtbl_value(), CHECK_NULL); |
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// Make sure size calculation is right |
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assert(k()->size() == align_object_size(header_size()), "wrong size for object"); |
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java_lang_Class::create_mirror(k, CHECK_NULL); // Allocate mirror |
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return k(); |
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} |
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void constantPoolCacheKlass::oop_follow_contents(oop obj) { |
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assert(obj->is_constantPoolCache(), "obj must be constant pool cache"); |
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constantPoolCacheOop cache = (constantPoolCacheOop)obj; |
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// Performance tweak: We skip iterating over the klass pointer since we |
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// know that Universe::constantPoolCacheKlassObj never moves. |
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// gc of constant pool cache instance variables |
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MarkSweep::mark_and_push((oop*)cache->constant_pool_addr()); |
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// gc of constant pool cache entries |
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int i = cache->length(); |
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while (i-- > 0) cache->entry_at(i)->follow_contents(); |
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} |
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#ifndef SERIALGC |
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void constantPoolCacheKlass::oop_follow_contents(ParCompactionManager* cm, |
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oop obj) { |
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assert(obj->is_constantPoolCache(), "obj must be constant pool cache"); |
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constantPoolCacheOop cache = (constantPoolCacheOop)obj; |
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// Performance tweak: We skip iterating over the klass pointer since we |
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// know that Universe::constantPoolCacheKlassObj never moves. |
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// gc of constant pool cache instance variables |
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PSParallelCompact::mark_and_push(cm, (oop*)cache->constant_pool_addr()); |
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// gc of constant pool cache entries |
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int i = cache->length(); |
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while (i-- > 0) cache->entry_at(i)->follow_contents(cm); |
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} |
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#endif // SERIALGC |
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int constantPoolCacheKlass::oop_oop_iterate(oop obj, OopClosure* blk) { |
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assert(obj->is_constantPoolCache(), "obj must be constant pool cache"); |
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constantPoolCacheOop cache = (constantPoolCacheOop)obj; |
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// Get size before changing pointers. |
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// Don't call size() or oop_size() since that is a virtual call. |
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int size = cache->object_size(); |
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// Performance tweak: We skip iterating over the klass pointer since we |
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// know that Universe::constantPoolCacheKlassObj never moves. |
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// iteration over constant pool cache instance variables |
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blk->do_oop((oop*)cache->constant_pool_addr()); |
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// iteration over constant pool cache entries |
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for (int i = 0; i < cache->length(); i++) cache->entry_at(i)->oop_iterate(blk); |
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return size; |
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} |
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int constantPoolCacheKlass::oop_oop_iterate_m(oop obj, OopClosure* blk, MemRegion mr) { |
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assert(obj->is_constantPoolCache(), "obj must be constant pool cache"); |
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constantPoolCacheOop cache = (constantPoolCacheOop)obj; |
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// Get size before changing pointers. |
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// Don't call size() or oop_size() since that is a virtual call. |
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int size = cache->object_size(); |
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// Performance tweak: We skip iterating over the klass pointer since we |
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// know that Universe::constantPoolCacheKlassObj never moves. |
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// iteration over constant pool cache instance variables |
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oop* addr = (oop*)cache->constant_pool_addr(); |
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if (mr.contains(addr)) blk->do_oop(addr); |
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// iteration over constant pool cache entries |
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for (int i = 0; i < cache->length(); i++) cache->entry_at(i)->oop_iterate_m(blk, mr); |
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return size; |
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} |
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int constantPoolCacheKlass::oop_adjust_pointers(oop obj) { |
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assert(obj->is_constantPoolCache(), "obj must be constant pool cache"); |
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constantPoolCacheOop cache = (constantPoolCacheOop)obj; |
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// Get size before changing pointers. |
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// Don't call size() or oop_size() since that is a virtual call. |
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int size = cache->object_size(); |
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// Performance tweak: We skip iterating over the klass pointer since we |
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// know that Universe::constantPoolCacheKlassObj never moves. |
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// Iteration over constant pool cache instance variables |
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MarkSweep::adjust_pointer((oop*)cache->constant_pool_addr()); |
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// iteration over constant pool cache entries |
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for (int i = 0; i < cache->length(); i++) |
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cache->entry_at(i)->adjust_pointers(); |
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return size; |
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} |
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#ifndef SERIALGC |
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void constantPoolCacheKlass::oop_push_contents(PSPromotionManager* pm, |
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oop obj) { |
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assert(obj->is_constantPoolCache(), "should be constant pool"); |
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if (EnableInvokeDynamic) { |
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constantPoolCacheOop cache = (constantPoolCacheOop)obj; |
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// during a scavenge, it is safe to inspect my pool, since it is perm |
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constantPoolOop pool = cache->constant_pool(); |
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assert(pool->is_constantPool(), "should be constant pool"); |
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if (pool->has_invokedynamic()) { |
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for (int i = 0; i < cache->length(); i++) { |
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ConstantPoolCacheEntry* e = cache->entry_at(i); |
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oop* p = (oop*)&e->_f1; |
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if (e->is_secondary_entry()) { |
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if (PSScavenge::should_scavenge(p)) |
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pm->claim_or_forward_depth(p); |
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assert(!(e->is_vfinal() && PSScavenge::should_scavenge((oop*)&e->_f2)), |
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"no live oops here"); |
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} |
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} |
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} |
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} |
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} |
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int |
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constantPoolCacheKlass::oop_update_pointers(ParCompactionManager* cm, oop obj) { |
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assert(obj->is_constantPoolCache(), "obj must be constant pool cache"); |
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constantPoolCacheOop cache = (constantPoolCacheOop)obj; |
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// Iteration over constant pool cache instance variables |
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PSParallelCompact::adjust_pointer((oop*)cache->constant_pool_addr()); |
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// iteration over constant pool cache entries |
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for (int i = 0; i < cache->length(); ++i) { |
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cache->entry_at(i)->update_pointers(); |
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} |
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return cache->object_size(); |
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} |
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#endif // SERIALGC |
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void constantPoolCacheKlass::oop_print_on(oop obj, outputStream* st) { |
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assert(obj->is_constantPoolCache(), "obj must be constant pool cache"); |
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constantPoolCacheOop cache = (constantPoolCacheOop)obj; |
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// super print |
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Klass::oop_print_on(obj, st); |
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// print constant pool cache entries |
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for (int i = 0; i < cache->length(); i++) cache->entry_at(i)->print(st, i); |
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} |
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void constantPoolCacheKlass::oop_print_value_on(oop obj, outputStream* st) { |
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assert(obj->is_constantPoolCache(), "obj must be constant pool cache"); |
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constantPoolCacheOop cache = (constantPoolCacheOop)obj; |
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st->print("cache [%d]", cache->length()); |
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cache->print_address_on(st); |
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st->print(" for "); |
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cache->constant_pool()->print_value_on(st); |
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} |
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void constantPoolCacheKlass::oop_verify_on(oop obj, outputStream* st) { |
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guarantee(obj->is_constantPoolCache(), "obj must be constant pool cache"); |
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constantPoolCacheOop cache = (constantPoolCacheOop)obj; |
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// super verify |
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Klass::oop_verify_on(obj, st); |
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// print constant pool cache entries |
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for (int i = 0; i < cache->length(); i++) cache->entry_at(i)->verify(st); |
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} |
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const char* constantPoolCacheKlass::internal_name() const { |
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return "{constant pool cache}"; |
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} |