Mercurial > hg > graal-compiler
view src/share/vm/oops/objArrayKlassKlass.cpp @ 4444:7d9469b37f1f
bugfixes
author | Christian Haeubl <christian.haeubl@oracle.com> |
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date | Mon, 23 Jan 2012 18:56:52 -0800 |
parents | c7f3d0b4570f |
children | fc9d8850ab8b |
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/* * Copyright (c) 1997, 2011, Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation. * * This code is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. * */ #include "precompiled.hpp" #include "classfile/javaClasses.hpp" #include "classfile/systemDictionary.hpp" #include "gc_implementation/shared/markSweep.inline.hpp" #include "gc_interface/collectedHeap.inline.hpp" #include "oops/instanceKlass.hpp" #include "oops/objArrayKlassKlass.hpp" #include "oops/oop.inline.hpp" #include "oops/oop.inline2.hpp" #ifndef SERIALGC #include "gc_implementation/parNew/parOopClosures.inline.hpp" #include "gc_implementation/parallelScavenge/psPromotionManager.inline.hpp" #include "gc_implementation/parallelScavenge/psScavenge.inline.hpp" #include "memory/cardTableRS.hpp" #include "oops/oop.pcgc.inline.hpp" #endif klassOop objArrayKlassKlass::create_klass(TRAPS) { objArrayKlassKlass o; KlassHandle h_this_klass(THREAD, Universe::klassKlassObj()); KlassHandle k = base_create_klass(h_this_klass, header_size(), o.vtbl_value(), CHECK_0); assert(k()->size() == align_object_size(header_size()), "wrong size for object"); java_lang_Class::create_mirror(k, CHECK_0); // Allocate mirror return k(); } klassOop objArrayKlassKlass::allocate_system_objArray_klass(TRAPS) { // system_objArrays have no instance klass, so allocate with fake class, then reset to NULL KlassHandle kk(THREAD, Universe::intArrayKlassObj()); klassOop k = allocate_objArray_klass(1, kk, CHECK_0); objArrayKlass* tk = (objArrayKlass*) k->klass_part(); tk->set_element_klass(NULL); tk->set_bottom_klass(NULL); return k; } klassOop objArrayKlassKlass::allocate_objArray_klass(int n, KlassHandle element_klass, TRAPS) { objArrayKlassKlassHandle this_oop(THREAD, as_klassOop()); return allocate_objArray_klass_impl(this_oop, n, element_klass, THREAD); } klassOop objArrayKlassKlass::allocate_objArray_klass_impl(objArrayKlassKlassHandle this_oop, int n, KlassHandle element_klass, TRAPS) { // Eagerly allocate the direct array supertype. KlassHandle super_klass = KlassHandle(); if (!Universe::is_bootstrapping()) { KlassHandle element_super (THREAD, element_klass->super()); if (element_super.not_null()) { // The element type has a direct super. E.g., String[] has direct super of Object[]. super_klass = KlassHandle(THREAD, element_super->array_klass_or_null()); bool supers_exist = super_klass.not_null(); // Also, see if the element has secondary supertypes. // We need an array type for each. objArrayHandle element_supers = objArrayHandle(THREAD, element_klass->secondary_supers()); for( int i = element_supers->length()-1; i >= 0; i-- ) { klassOop elem_super = (klassOop) element_supers->obj_at(i); if (Klass::cast(elem_super)->array_klass_or_null() == NULL) { supers_exist = false; break; } } if (!supers_exist) { // Oops. Not allocated yet. Back out, allocate it, and retry. #ifndef PRODUCT if (WizardMode) { tty->print_cr("Must retry array klass creation for depth %d",n); } #endif KlassHandle ek; { MutexUnlocker mu(MultiArray_lock); MutexUnlocker mc(Compile_lock); // for vtables klassOop sk = element_super->array_klass(CHECK_0); super_klass = KlassHandle(THREAD, sk); for( int i = element_supers->length()-1; i >= 0; i-- ) { KlassHandle elem_super (THREAD, element_supers->obj_at(i)); elem_super->array_klass(CHECK_0); } // Now retry from the beginning klassOop klass_oop = element_klass->array_klass(n, CHECK_0); // Create a handle because the enclosing brace, when locking // can cause a gc. Better to have this function return a Handle. ek = KlassHandle(THREAD, klass_oop); } // re-lock return ek(); } } else { // The element type is already Object. Object[] has direct super of Object. super_klass = KlassHandle(THREAD, SystemDictionary::Object_klass()); } } // Create type name for klass. Symbol* name = NULL; if (!element_klass->oop_is_instance() || (name = instanceKlass::cast(element_klass())->array_name()) == NULL) { ResourceMark rm(THREAD); char *name_str = element_klass->name()->as_C_string(); int len = element_klass->name()->utf8_length(); char *new_str = NEW_RESOURCE_ARRAY(char, len + 4); int idx = 0; new_str[idx++] = '['; if (element_klass->oop_is_instance()) { // it could be an array or simple type new_str[idx++] = 'L'; } memcpy(&new_str[idx], name_str, len * sizeof(char)); idx += len; if (element_klass->oop_is_instance()) { new_str[idx++] = ';'; } new_str[idx++] = '\0'; name = SymbolTable::new_symbol(new_str, CHECK_0); if (element_klass->oop_is_instance()) { instanceKlass* ik = instanceKlass::cast(element_klass()); ik->set_array_name(name); } } objArrayKlass o; arrayKlassHandle k = arrayKlass::base_create_array_klass(o.vtbl_value(), objArrayKlass::header_size(), this_oop, CHECK_0); // Initialize instance variables objArrayKlass* oak = objArrayKlass::cast(k()); oak->set_dimension(n); oak->set_element_klass(element_klass()); oak->set_name(name); // decrement refcount because object arrays are not explicitly freed. The // instanceKlass array_name() keeps the name counted while the klass is // loaded. name->decrement_refcount(); klassOop bk; if (element_klass->oop_is_objArray()) { bk = objArrayKlass::cast(element_klass())->bottom_klass(); } else { bk = element_klass(); } assert(bk != NULL && (Klass::cast(bk)->oop_is_instance() || Klass::cast(bk)->oop_is_typeArray()), "invalid bottom klass"); oak->set_bottom_klass(bk); oak->set_layout_helper(array_layout_helper(T_OBJECT)); assert(oak->oop_is_javaArray(), "sanity"); assert(oak->oop_is_objArray(), "sanity"); // Call complete_create_array_klass after all instance variables has been initialized. arrayKlass::complete_create_array_klass(k, super_klass, CHECK_0); return k(); } void objArrayKlassKlass::oop_follow_contents(oop obj) { assert(obj->is_klass(), "must be klass"); assert(klassOop(obj)->klass_part()->oop_is_objArray_slow(), "must be obj array"); objArrayKlass* oak = objArrayKlass::cast((klassOop)obj); MarkSweep::mark_and_push(oak->element_klass_addr()); MarkSweep::mark_and_push(oak->bottom_klass_addr()); arrayKlassKlass::oop_follow_contents(obj); } #ifndef SERIALGC void objArrayKlassKlass::oop_follow_contents(ParCompactionManager* cm, oop obj) { assert(obj->is_klass(), "must be klass"); assert(klassOop(obj)->klass_part()->oop_is_objArray_slow(), "must be obj array"); objArrayKlass* oak = objArrayKlass::cast((klassOop)obj); PSParallelCompact::mark_and_push(cm, oak->element_klass_addr()); PSParallelCompact::mark_and_push(cm, oak->bottom_klass_addr()); arrayKlassKlass::oop_follow_contents(cm, obj); } #endif // SERIALGC int objArrayKlassKlass::oop_adjust_pointers(oop obj) { assert(obj->is_klass(), "must be klass"); assert(klassOop(obj)->klass_part()->oop_is_objArray_slow(), "must be obj array"); objArrayKlass* oak = objArrayKlass::cast((klassOop)obj); MarkSweep::adjust_pointer(oak->element_klass_addr()); MarkSweep::adjust_pointer(oak->bottom_klass_addr()); return arrayKlassKlass::oop_adjust_pointers(obj); } int objArrayKlassKlass::oop_oop_iterate(oop obj, OopClosure* blk) { assert(obj->is_klass(), "must be klass"); assert(klassOop(obj)->klass_part()->oop_is_objArray_slow(), "must be obj array"); objArrayKlass* oak = objArrayKlass::cast((klassOop)obj); blk->do_oop(oak->element_klass_addr()); blk->do_oop(oak->bottom_klass_addr()); return arrayKlassKlass::oop_oop_iterate(obj, blk); } int objArrayKlassKlass::oop_oop_iterate_m(oop obj, OopClosure* blk, MemRegion mr) { assert(obj->is_klass(), "must be klass"); assert(klassOop(obj)->klass_part()->oop_is_objArray_slow(), "must be obj array"); objArrayKlass* oak = objArrayKlass::cast((klassOop)obj); oop* addr; addr = oak->element_klass_addr(); if (mr.contains(addr)) blk->do_oop(addr); addr = oak->bottom_klass_addr(); if (mr.contains(addr)) blk->do_oop(addr); return arrayKlassKlass::oop_oop_iterate_m(obj, blk, mr); } #ifndef SERIALGC void objArrayKlassKlass::oop_push_contents(PSPromotionManager* pm, oop obj) { assert(obj->blueprint()->oop_is_objArrayKlass(),"must be an obj array klass"); objArrayKlass* oak = objArrayKlass::cast((klassOop)obj); oop* p = oak->element_klass_addr(); if (PSScavenge::should_scavenge(p)) { pm->claim_or_forward_depth(p); } p = oak->bottom_klass_addr(); if (PSScavenge::should_scavenge(p)) { pm->claim_or_forward_depth(p); } arrayKlassKlass::oop_push_contents(pm, obj); } int objArrayKlassKlass::oop_update_pointers(ParCompactionManager* cm, oop obj) { assert(obj->is_klass(), "must be klass"); assert(klassOop(obj)->klass_part()->oop_is_objArray_slow(), "must be obj array"); objArrayKlass* oak = objArrayKlass::cast((klassOop)obj); PSParallelCompact::adjust_pointer(oak->element_klass_addr()); PSParallelCompact::adjust_pointer(oak->bottom_klass_addr()); return arrayKlassKlass::oop_update_pointers(cm, obj); } #endif // SERIALGC #ifndef PRODUCT // Printing void objArrayKlassKlass::oop_print_on(oop obj, outputStream* st) { assert(obj->is_klass(), "must be klass"); objArrayKlass* oak = (objArrayKlass*) klassOop(obj)->klass_part(); klassKlass::oop_print_on(obj, st); st->print(" - instance klass: "); oak->element_klass()->print_value_on(st); st->cr(); } #endif //PRODUCT void objArrayKlassKlass::oop_print_value_on(oop obj, outputStream* st) { assert(obj->is_klass(), "must be klass"); objArrayKlass* oak = (objArrayKlass*) klassOop(obj)->klass_part(); oak->element_klass()->print_value_on(st); st->print("[]"); } const char* objArrayKlassKlass::internal_name() const { return "{object array class}"; } // Verification void objArrayKlassKlass::oop_verify_on(oop obj, outputStream* st) { arrayKlassKlass::oop_verify_on(obj, st); objArrayKlass* oak = objArrayKlass::cast((klassOop)obj); guarantee(oak->element_klass()->is_perm(), "should be in permspace"); guarantee(oak->element_klass()->is_klass(), "should be klass"); guarantee(oak->bottom_klass()->is_perm(), "should be in permspace"); guarantee(oak->bottom_klass()->is_klass(), "should be klass"); Klass* bk = Klass::cast(oak->bottom_klass()); guarantee(bk->oop_is_instance() || bk->oop_is_typeArray(), "invalid bottom klass"); }