hotspot/src/share/vm/memory/oopFactory.hpp
author ysr
Mon, 07 Feb 2011 22:19:57 -0800
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6912621: iCMS: Error: assert(_markBitMap.isMarked(addr + 1),"Missing Printezis bit?") Summary: Fix block_size_if_printezis_bits() so it does not expect the bits, only uses them when available. Fix block_size_no_stall() so it does not stall when the bits are missing such cases, letting the caller deal with zero size returns. Constant pool cache oops do not need to be unparsable or conc_unsafe after their klass pointer is installed. Some cosmetic clean-ups and some assertion checking for conc-usafety which, in the presence of class file redefinition, has no a-priori time boundedness, so all GCs must be able to safely deal with putatively conc-unsafe objects in a stop-world pause. Reviewed-by: jmasa, johnc
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/*
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 * Copyright (c) 1997, 2010, 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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#ifndef SHARE_VM_MEMORY_OOPFACTORY_HPP
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#define SHARE_VM_MEMORY_OOPFACTORY_HPP
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#include "classfile/symbolTable.hpp"
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#include "classfile/systemDictionary.hpp"
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#include "memory/universe.hpp"
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#include "oops/klassOop.hpp"
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#include "oops/objArrayKlass.hpp"
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#include "oops/oop.hpp"
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#include "oops/typeArrayKlass.hpp"
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#include "utilities/growableArray.hpp"
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// oopFactory is a class used for creating new objects.
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class vframeArray;
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class oopFactory: AllStatic {
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 public:
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  // Basic type leaf array allocation
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  static typeArrayOop    new_boolArray  (int length, TRAPS) { return typeArrayKlass::cast(Universe::boolArrayKlassObj  ())->allocate(length, CHECK_NULL); }
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  static typeArrayOop    new_charArray  (int length, TRAPS) { return typeArrayKlass::cast(Universe::charArrayKlassObj  ())->allocate(length, CHECK_NULL); }
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  static typeArrayOop    new_singleArray(int length, TRAPS) { return typeArrayKlass::cast(Universe::singleArrayKlassObj())->allocate(length, CHECK_NULL); }
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  static typeArrayOop    new_doubleArray(int length, TRAPS) { return typeArrayKlass::cast(Universe::doubleArrayKlassObj())->allocate(length, CHECK_NULL); }
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  static typeArrayOop    new_byteArray  (int length, TRAPS) { return typeArrayKlass::cast(Universe::byteArrayKlassObj  ())->allocate(length, CHECK_NULL); }
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  static typeArrayOop    new_shortArray (int length, TRAPS) { return typeArrayKlass::cast(Universe::shortArrayKlassObj ())->allocate(length, CHECK_NULL); }
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  static typeArrayOop    new_intArray   (int length, TRAPS) { return typeArrayKlass::cast(Universe::intArrayKlassObj   ())->allocate(length, CHECK_NULL); }
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  static typeArrayOop    new_longArray  (int length, TRAPS) { return typeArrayKlass::cast(Universe::longArrayKlassObj  ())->allocate(length, CHECK_NULL); }
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  // create java.lang.Object[]
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  static objArrayOop     new_objectArray(int length, TRAPS)  {
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    return objArrayKlass::
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      cast(Universe::objectArrayKlassObj())->allocate(length, CHECK_NULL);
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  }
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  static typeArrayOop    new_charArray           (const char* utf8_str,  TRAPS);
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  static typeArrayOop    new_permanent_charArray (int length, TRAPS);
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  static typeArrayOop    new_permanent_byteArray (int length, TRAPS);  // used for class file structures
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  static typeArrayOop    new_permanent_shortArray(int length, TRAPS);  // used for class file structures
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  static typeArrayOop    new_permanent_intArray  (int length, TRAPS);  // used for class file structures
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  static typeArrayOop    new_typeArray(BasicType type, int length, TRAPS);
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  // Constant pools
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  static constantPoolOop      new_constantPool     (int length,
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                                                    bool is_conc_safe,
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                                                    TRAPS);
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  static constantPoolCacheOop new_constantPoolCache(int length,
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                                                    TRAPS);
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  // Instance classes
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  static klassOop        new_instanceKlass(int vtable_len, int itable_len,
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                                           int static_field_size,
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                                           unsigned int nonstatic_oop_map_count,
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                                           ReferenceType rt, TRAPS);
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  // Methods
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private:
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  static constMethodOop  new_constMethod(int byte_code_size,
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                                         int compressed_line_number_size,
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                                         int localvariable_table_length,
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                                         int checked_exceptions_length,
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                                         bool is_conc_safe,
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                                         TRAPS);
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  // Set is_conc_safe for methods which cannot safely be
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  // processed by concurrent GC even after the return of
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  // the method.
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  static methodOop       new_method(int byte_code_size,
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                                    AccessFlags access_flags,
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                                    int compressed_line_number_size,
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                                    int localvariable_table_length,
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                                    int checked_exceptions_length,
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                                    bool is_conc_safe,
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                                    TRAPS);
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  // Method Data containers
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  static methodDataOop   new_methodData(methodHandle method, TRAPS);
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  // System object arrays
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  static objArrayOop     new_system_objArray(int length, TRAPS);
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  // Regular object arrays
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  static objArrayOop     new_objArray(klassOop klass, int length, TRAPS);
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  // For compiled ICs
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  static compiledICHolderOop new_compiledICHolder(methodHandle method, KlassHandle klass, TRAPS);
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};
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#endif // SHARE_VM_MEMORY_OOPFACTORY_HPP