truffle: src/share/vm/oops/oop.hpp annotate

annotate src/share/vm/oops/oop.hpp @ 14340:cd6b3f1a94ff

8033792: AltHashing used jint for imprecise bit shifting Summary: AltHashing used jint the way of juint in bit shifting which could lead loss of precision. Fix by change _seed defined as juint. Reviewed-by: coleenp, ccheung Contributed-by: yumin.qi@oracle.com

author	minqi
date	Mon, 10 Feb 2014 21:29:14 -0800
parents	397385cc2c83
children	7f0e0366ec81

rev	line source
0 a61af66fc99e Initial load duke parents: diff changeset	1 /*
14340 cd6b3f1a94ff 8033792: AltHashing used jint for imprecise bit shifting minqi parents: 14210 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: 1123 diff changeset	19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
c18cbe5936b8 6941466: Oracle rebranding changes for Hotspot repositories trims parents: 1123 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: 1123 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: 1706 diff changeset	25 #ifndef SHARE_VM_OOPS_OOP_HPP
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1706 diff changeset	26 #define SHARE_VM_OOPS_OOP_HPP
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1706 diff changeset	27
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1706 diff changeset	28 #include "memory/iterator.hpp"
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1706 diff changeset	29 #include "memory/memRegion.hpp"
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1706 diff changeset	30 #include "memory/specialized_oop_closures.hpp"
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	31 #include "oops/metadata.hpp"
8001 db9981fd3124 8005915: Unify SERIALGC and INCLUDE_ALTERNATE_GCS jprovino parents: 6818 diff changeset	32 #include "utilities/macros.hpp"
1972 f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1706 diff changeset	33 #include "utilities/top.hpp"
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1706 diff changeset	34
0 a61af66fc99e Initial load duke parents: diff changeset	35 // oopDesc is the top baseclass for objects classes. The {name}Desc classes describe
a61af66fc99e Initial load duke parents: diff changeset	36 // the format of Java objects so the fields can be accessed from C++.
a61af66fc99e Initial load duke parents: diff changeset	37 // oopDesc is abstract.
a61af66fc99e Initial load duke parents: diff changeset	38 // (see oopHierarchy for complete oop class hierarchy)
a61af66fc99e Initial load duke parents: diff changeset	39 //
a61af66fc99e Initial load duke parents: diff changeset	40 // no virtual functions allowed
a61af66fc99e Initial load duke parents: diff changeset	41
a61af66fc99e Initial load duke parents: diff changeset	42 // store into oop with store check
1972 f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1706 diff changeset	43 template <class T> void oop_store(T* p, oop v);
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1706 diff changeset	44 template <class T> void oop_store(volatile T* p, oop v);
0 a61af66fc99e Initial load duke parents: diff changeset	45
a61af66fc99e Initial load duke parents: diff changeset	46 extern bool always_do_update_barrier;
a61af66fc99e Initial load duke parents: diff changeset	47
a61af66fc99e Initial load duke parents: diff changeset	48 // Forward declarations.
a61af66fc99e Initial load duke parents: diff changeset	49 class OopClosure;
a61af66fc99e Initial load duke parents: diff changeset	50 class ScanClosure;
a61af66fc99e Initial load duke parents: diff changeset	51 class FastScanClosure;
a61af66fc99e Initial load duke parents: diff changeset	52 class FilteringClosure;
a61af66fc99e Initial load duke parents: diff changeset	53 class BarrierSet;
a61af66fc99e Initial load duke parents: diff changeset	54 class CMSIsAliveClosure;
a61af66fc99e Initial load duke parents: diff changeset	55
a61af66fc99e Initial load duke parents: diff changeset	56 class PSPromotionManager;
a61af66fc99e Initial load duke parents: diff changeset	57 class ParCompactionManager;
a61af66fc99e Initial load duke parents: diff changeset	58
a61af66fc99e Initial load duke parents: diff changeset	59 class oopDesc {
a61af66fc99e Initial load duke parents: diff changeset	60 friend class VMStructs;
a61af66fc99e Initial load duke parents: diff changeset	61 private:
a61af66fc99e Initial load duke parents: diff changeset	62 volatile markOop _mark;
113 ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	63 union _metadata {
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	64 Klass* _klass;
12056 740e263c80c6 8003424: Enable Class Data Sharing for CompressedOops hseigel parents: 8001 diff changeset	65 narrowKlass _compressed_klass;
113 ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	66 } _metadata;
0 a61af66fc99e Initial load duke parents: diff changeset	67
a61af66fc99e Initial load duke parents: diff changeset	68 // Fast access to barrier set. Must be initialized.
a61af66fc99e Initial load duke parents: diff changeset	69 static BarrierSet* _bs;
a61af66fc99e Initial load duke parents: diff changeset	70
a61af66fc99e Initial load duke parents: diff changeset	71 public:
a61af66fc99e Initial load duke parents: diff changeset	72 markOop mark() const { return _mark; }
a61af66fc99e Initial load duke parents: diff changeset	73 markOop* mark_addr() const { return (markOop*) &_mark; }
a61af66fc99e Initial load duke parents: diff changeset	74
a61af66fc99e Initial load duke parents: diff changeset	75 void set_mark(volatile markOop m) { _mark = m; }
a61af66fc99e Initial load duke parents: diff changeset	76
a61af66fc99e Initial load duke parents: diff changeset	77 void release_set_mark(markOop m);
a61af66fc99e Initial load duke parents: diff changeset	78 markOop cas_set_mark(markOop new_mark, markOop old_mark);
a61af66fc99e Initial load duke parents: diff changeset	79
a61af66fc99e Initial load duke parents: diff changeset	80 // Used only to re-initialize the mark word (e.g., of promoted
a61af66fc99e Initial load duke parents: diff changeset	81 // objects during a GC) -- requires a valid klass pointer
a61af66fc99e Initial load duke parents: diff changeset	82 void init_mark();
a61af66fc99e Initial load duke parents: diff changeset	83
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	84 Klass* klass() const;
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	85 Klass* klass_or_null() const volatile;
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	86 Klass** klass_addr();
12056 740e263c80c6 8003424: Enable Class Data Sharing for CompressedOops hseigel parents: 8001 diff changeset	87 narrowKlass* compressed_klass_addr();
0 a61af66fc99e Initial load duke parents: diff changeset	88
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	89 void set_klass(Klass* k);
167 feeb96a45707 6696264: assert("narrow oop can never be zero") for GCBasher & ParNewGC coleenp parents: 135 diff changeset	90
feeb96a45707 6696264: assert("narrow oop can never be zero") for GCBasher & ParNewGC coleenp parents: 135 diff changeset	91 // For klass field compression
feeb96a45707 6696264: assert("narrow oop can never be zero") for GCBasher & ParNewGC coleenp parents: 135 diff changeset	92 int klass_gap() const;
feeb96a45707 6696264: assert("narrow oop can never be zero") for GCBasher & ParNewGC coleenp parents: 135 diff changeset	93 void set_klass_gap(int z);
0 a61af66fc99e Initial load duke parents: diff changeset	94 // For when the klass pointer is being used as a linked list "next" field.
a61af66fc99e Initial load duke parents: diff changeset	95 void set_klass_to_list_ptr(oop k);
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	96 oop list_ptr_from_klass();
0 a61af66fc99e Initial load duke parents: diff changeset	97
113 ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	98 // size of object header, aligned to platform wordSize
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	99 static int header_size() { return sizeof(oopDesc)/HeapWordSize; }
0 a61af66fc99e Initial load duke parents: diff changeset	100
a61af66fc99e Initial load duke parents: diff changeset	101 // Returns whether this is an instance of k or an instance of a subclass of k
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	102 bool is_a(Klass* k) const;
0 a61af66fc99e Initial load duke parents: diff changeset	103
a61af66fc99e Initial load duke parents: diff changeset	104 // Returns the actual oop size of the object
a61af66fc99e Initial load duke parents: diff changeset	105 int size();
a61af66fc99e Initial load duke parents: diff changeset	106
a61af66fc99e Initial load duke parents: diff changeset	107 // Sometimes (for complicated concurrency-related reasons), it is useful
a61af66fc99e Initial load duke parents: diff changeset	108 // to be able to figure out the size of an object knowing its klass.
a61af66fc99e Initial load duke parents: diff changeset	109 int size_given_klass(Klass* klass);
a61af66fc99e Initial load duke parents: diff changeset	110
a61af66fc99e Initial load duke parents: diff changeset	111 // type test operations (inlined in oop.inline.h)
a61af66fc99e Initial load duke parents: diff changeset	112 bool is_instance() const;
2376 c7f3d0b4570f 7017732: move static fields into Class to prepare for perm gen removal never parents: 2227 diff changeset	113 bool is_instanceMirror() const;
0 a61af66fc99e Initial load duke parents: diff changeset	114 bool is_instanceRef() const;
a61af66fc99e Initial load duke parents: diff changeset	115 bool is_array() const;
a61af66fc99e Initial load duke parents: diff changeset	116 bool is_objArray() const;
a61af66fc99e Initial load duke parents: diff changeset	117 bool is_typeArray() const;
a61af66fc99e Initial load duke parents: diff changeset	118
a61af66fc99e Initial load duke parents: diff changeset	119 private:
a61af66fc99e Initial load duke parents: diff changeset	120 // field addresses in oop
a61af66fc99e Initial load duke parents: diff changeset	121 void* field_base(int offset) const;
a61af66fc99e Initial load duke parents: diff changeset	122
a61af66fc99e Initial load duke parents: diff changeset	123 jbyte* byte_field_addr(int offset) const;
a61af66fc99e Initial load duke parents: diff changeset	124 jchar* char_field_addr(int offset) const;
a61af66fc99e Initial load duke parents: diff changeset	125 jboolean* bool_field_addr(int offset) const;
a61af66fc99e Initial load duke parents: diff changeset	126 jint* int_field_addr(int offset) const;
a61af66fc99e Initial load duke parents: diff changeset	127 jshort* short_field_addr(int offset) const;
a61af66fc99e Initial load duke parents: diff changeset	128 jlong* long_field_addr(int offset) const;
a61af66fc99e Initial load duke parents: diff changeset	129 jfloat* float_field_addr(int offset) const;
a61af66fc99e Initial load duke parents: diff changeset	130 jdouble* double_field_addr(int offset) const;
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	131 Metadata** metadata_field_addr(int offset) const;
0 a61af66fc99e Initial load duke parents: diff changeset	132
a61af66fc99e Initial load duke parents: diff changeset	133 public:
113 ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	134 // Need this as public for garbage collection.
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	135 template <class T> T* obj_field_addr(int offset) const;
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	136
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	137 // Needed for javaClasses
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	138 address* address_field_addr(int offset) const;
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	139
113 ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	140 static bool is_null(oop obj);
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	141 static bool is_null(narrowOop obj);
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	142 static bool is_null(Klass* obj);
113 ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	143
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	144 // Decode an oop pointer from a narrowOop if compressed.
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	145 // These are overloaded for oop and narrowOop as are the other functions
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	146 // below so that they can be called in template functions.
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	147 static oop decode_heap_oop_not_null(oop v);
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	148 static oop decode_heap_oop_not_null(narrowOop v);
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	149 static oop decode_heap_oop(oop v);
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	150 static oop decode_heap_oop(narrowOop v);
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	151
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	152 // Encode an oop pointer to a narrow oop. The or_null versions accept
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	153 // null oop pointer, others do not in order to eliminate the
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	154 // null checking branches.
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	155 static narrowOop encode_heap_oop_not_null(oop v);
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	156 static narrowOop encode_heap_oop(oop v);
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	157
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	158 // Load an oop out of the Java heap
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	159 static narrowOop load_heap_oop(narrowOop* p);
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	160 static oop load_heap_oop(oop* p);
0 a61af66fc99e Initial load duke parents: diff changeset	161
113 ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	162 // Load an oop out of Java heap and decode it to an uncompressed oop.
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	163 static oop load_decode_heap_oop_not_null(narrowOop* p);
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	164 static oop load_decode_heap_oop_not_null(oop* p);
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	165 static oop load_decode_heap_oop(narrowOop* p);
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	166 static oop load_decode_heap_oop(oop* p);
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	167
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	168 // Store an oop into the heap.
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	169 static void store_heap_oop(narrowOop* p, narrowOop v);
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	170 static void store_heap_oop(oop* p, oop v);
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	171
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	172 // Encode oop if UseCompressedOops and store into the heap.
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	173 static void encode_store_heap_oop_not_null(narrowOop* p, oop v);
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	174 static void encode_store_heap_oop_not_null(oop* p, oop v);
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	175 static void encode_store_heap_oop(narrowOop* p, oop v);
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	176 static void encode_store_heap_oop(oop* p, oop v);
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	177
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	178 static void release_store_heap_oop(volatile narrowOop* p, narrowOop v);
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	179 static void release_store_heap_oop(volatile oop* p, oop v);
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	180
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	181 static void release_encode_store_heap_oop_not_null(volatile narrowOop* p, oop v);
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	182 static void release_encode_store_heap_oop_not_null(volatile oop* p, oop v);
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	183 static void release_encode_store_heap_oop(volatile narrowOop* p, oop v);
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	184 static void release_encode_store_heap_oop(volatile oop* p, oop v);
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	185
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	186 static oop atomic_exchange_oop(oop exchange_value, volatile HeapWord *dest);
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	187 static oop atomic_compare_exchange_oop(oop exchange_value,
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	188 volatile HeapWord *dest,
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	189 oop compare_value,
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	190 bool prebarrier = false);
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	191
113 ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	192 // Access to fields in a instanceOop through these methods.
0 a61af66fc99e Initial load duke parents: diff changeset	193 oop obj_field(int offset) const;
3932 b0efc7ee3b31 7085860: JSR 292: implement CallSite.setTargetNormal and setTargetVolatile as native methods twisti parents: 2376 diff changeset	194 volatile oop obj_field_volatile(int offset) const;
0 a61af66fc99e Initial load duke parents: diff changeset	195 void obj_field_put(int offset, oop value);
3932 b0efc7ee3b31 7085860: JSR 292: implement CallSite.setTargetNormal and setTargetVolatile as native methods twisti parents: 2376 diff changeset	196 void obj_field_put_raw(int offset, oop value);
b0efc7ee3b31 7085860: JSR 292: implement CallSite.setTargetNormal and setTargetVolatile as native methods twisti parents: 2376 diff changeset	197 void obj_field_put_volatile(int offset, oop value);
0 a61af66fc99e Initial load duke parents: diff changeset	198
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	199 Metadata* metadata_field(int offset) const;
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	200 void metadata_field_put(int offset, Metadata* value);
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	201
0 a61af66fc99e Initial load duke parents: diff changeset	202 jbyte byte_field(int offset) const;
a61af66fc99e Initial load duke parents: diff changeset	203 void byte_field_put(int offset, jbyte contents);
a61af66fc99e Initial load duke parents: diff changeset	204
a61af66fc99e Initial load duke parents: diff changeset	205 jchar char_field(int offset) const;
a61af66fc99e Initial load duke parents: diff changeset	206 void char_field_put(int offset, jchar contents);
a61af66fc99e Initial load duke parents: diff changeset	207
a61af66fc99e Initial load duke parents: diff changeset	208 jboolean bool_field(int offset) const;
a61af66fc99e Initial load duke parents: diff changeset	209 void bool_field_put(int offset, jboolean contents);
a61af66fc99e Initial load duke parents: diff changeset	210
a61af66fc99e Initial load duke parents: diff changeset	211 jint int_field(int offset) const;
a61af66fc99e Initial load duke parents: diff changeset	212 void int_field_put(int offset, jint contents);
a61af66fc99e Initial load duke parents: diff changeset	213
a61af66fc99e Initial load duke parents: diff changeset	214 jshort short_field(int offset) const;
a61af66fc99e Initial load duke parents: diff changeset	215 void short_field_put(int offset, jshort contents);
a61af66fc99e Initial load duke parents: diff changeset	216
a61af66fc99e Initial load duke parents: diff changeset	217 jlong long_field(int offset) const;
a61af66fc99e Initial load duke parents: diff changeset	218 void long_field_put(int offset, jlong contents);
a61af66fc99e Initial load duke parents: diff changeset	219
a61af66fc99e Initial load duke parents: diff changeset	220 jfloat float_field(int offset) const;
a61af66fc99e Initial load duke parents: diff changeset	221 void float_field_put(int offset, jfloat contents);
a61af66fc99e Initial load duke parents: diff changeset	222
a61af66fc99e Initial load duke parents: diff changeset	223 jdouble double_field(int offset) const;
a61af66fc99e Initial load duke parents: diff changeset	224 void double_field_put(int offset, jdouble contents);
a61af66fc99e Initial load duke parents: diff changeset	225
113 ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	226 address address_field(int offset) const;
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	227 void address_field_put(int offset, address contents);
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	228
0 a61af66fc99e Initial load duke parents: diff changeset	229 oop obj_field_acquire(int offset) const;
a61af66fc99e Initial load duke parents: diff changeset	230 void release_obj_field_put(int offset, oop value);
a61af66fc99e Initial load duke parents: diff changeset	231
a61af66fc99e Initial load duke parents: diff changeset	232 jbyte byte_field_acquire(int offset) const;
a61af66fc99e Initial load duke parents: diff changeset	233 void release_byte_field_put(int offset, jbyte contents);
a61af66fc99e Initial load duke parents: diff changeset	234
a61af66fc99e Initial load duke parents: diff changeset	235 jchar char_field_acquire(int offset) const;
a61af66fc99e Initial load duke parents: diff changeset	236 void release_char_field_put(int offset, jchar contents);
a61af66fc99e Initial load duke parents: diff changeset	237
a61af66fc99e Initial load duke parents: diff changeset	238 jboolean bool_field_acquire(int offset) const;
a61af66fc99e Initial load duke parents: diff changeset	239 void release_bool_field_put(int offset, jboolean contents);
a61af66fc99e Initial load duke parents: diff changeset	240
a61af66fc99e Initial load duke parents: diff changeset	241 jint int_field_acquire(int offset) const;
a61af66fc99e Initial load duke parents: diff changeset	242 void release_int_field_put(int offset, jint contents);
a61af66fc99e Initial load duke parents: diff changeset	243
a61af66fc99e Initial load duke parents: diff changeset	244 jshort short_field_acquire(int offset) const;
a61af66fc99e Initial load duke parents: diff changeset	245 void release_short_field_put(int offset, jshort contents);
a61af66fc99e Initial load duke parents: diff changeset	246
a61af66fc99e Initial load duke parents: diff changeset	247 jlong long_field_acquire(int offset) const;
a61af66fc99e Initial load duke parents: diff changeset	248 void release_long_field_put(int offset, jlong contents);
a61af66fc99e Initial load duke parents: diff changeset	249
a61af66fc99e Initial load duke parents: diff changeset	250 jfloat float_field_acquire(int offset) const;
a61af66fc99e Initial load duke parents: diff changeset	251 void release_float_field_put(int offset, jfloat contents);
a61af66fc99e Initial load duke parents: diff changeset	252
a61af66fc99e Initial load duke parents: diff changeset	253 jdouble double_field_acquire(int offset) const;
a61af66fc99e Initial load duke parents: diff changeset	254 void release_double_field_put(int offset, jdouble contents);
a61af66fc99e Initial load duke parents: diff changeset	255
710 e5b0439ef4ae 6655638: dynamic languages need method handles jrose parents: 579 diff changeset	256 address address_field_acquire(int offset) const;
e5b0439ef4ae 6655638: dynamic languages need method handles jrose parents: 579 diff changeset	257 void release_address_field_put(int offset, address contents);
e5b0439ef4ae 6655638: dynamic languages need method handles jrose parents: 579 diff changeset	258
0 a61af66fc99e Initial load duke parents: diff changeset	259 // printing functions for VM debugging
a61af66fc99e Initial load duke parents: diff changeset	260 void print_on(outputStream* st) const; // First level print
a61af66fc99e Initial load duke parents: diff changeset	261 void print_value_on(outputStream* st) const; // Second level print.
a61af66fc99e Initial load duke parents: diff changeset	262 void print_address_on(outputStream* st) const; // Address printing
a61af66fc99e Initial load duke parents: diff changeset	263
a61af66fc99e Initial load duke parents: diff changeset	264 // printing on default output stream
a61af66fc99e Initial load duke parents: diff changeset	265 void print();
a61af66fc99e Initial load duke parents: diff changeset	266 void print_value();
a61af66fc99e Initial load duke parents: diff changeset	267 void print_address();
a61af66fc99e Initial load duke parents: diff changeset	268
a61af66fc99e Initial load duke parents: diff changeset	269 // return the print strings
a61af66fc99e Initial load duke parents: diff changeset	270 char* print_string();
a61af66fc99e Initial load duke parents: diff changeset	271 char* print_value_string();
a61af66fc99e Initial load duke parents: diff changeset	272
a61af66fc99e Initial load duke parents: diff changeset	273 // verification operations
a61af66fc99e Initial load duke parents: diff changeset	274 void verify_on(outputStream* st);
a61af66fc99e Initial load duke parents: diff changeset	275 void verify();
a61af66fc99e Initial load duke parents: diff changeset	276
a61af66fc99e Initial load duke parents: diff changeset	277 // locking operations
a61af66fc99e Initial load duke parents: diff changeset	278 bool is_locked() const;
a61af66fc99e Initial load duke parents: diff changeset	279 bool is_unlocked() const;
a61af66fc99e Initial load duke parents: diff changeset	280 bool has_bias_pattern() const;
a61af66fc99e Initial load duke parents: diff changeset	281
a61af66fc99e Initial load duke parents: diff changeset	282 // asserts
a61af66fc99e Initial load duke parents: diff changeset	283 bool is_oop(bool ignore_mark_word = false) const;
a61af66fc99e Initial load duke parents: diff changeset	284 bool is_oop_or_null(bool ignore_mark_word = false) const;
a61af66fc99e Initial load duke parents: diff changeset	285 #ifndef PRODUCT
a61af66fc99e Initial load duke parents: diff changeset	286 bool is_unlocked_oop() const;
a61af66fc99e Initial load duke parents: diff changeset	287 #endif
a61af66fc99e Initial load duke parents: diff changeset	288
a61af66fc99e Initial load duke parents: diff changeset	289 // garbage collection
a61af66fc99e Initial load duke parents: diff changeset	290 bool is_gc_marked() const;
a61af66fc99e Initial load duke parents: diff changeset	291 // Apply "MarkSweep::mark_and_push" to (the address of) every non-NULL
a61af66fc99e Initial load duke parents: diff changeset	292 // reference field in "this".
113 ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	293 void follow_contents(void);
0 a61af66fc99e Initial load duke parents: diff changeset	294
8001 db9981fd3124 8005915: Unify SERIALGC and INCLUDE_ALTERNATE_GCS jprovino parents: 6818 diff changeset	295 #if INCLUDE_ALL_GCS
0 a61af66fc99e Initial load duke parents: diff changeset	296 // Parallel Scavenge
a61af66fc99e Initial load duke parents: diff changeset	297 void push_contents(PSPromotionManager* pm);
a61af66fc99e Initial load duke parents: diff changeset	298
a61af66fc99e Initial load duke parents: diff changeset	299 // Parallel Old
a61af66fc99e Initial load duke parents: diff changeset	300 void update_contents(ParCompactionManager* cm);
a61af66fc99e Initial load duke parents: diff changeset	301
a61af66fc99e Initial load duke parents: diff changeset	302 void follow_contents(ParCompactionManager* cm);
8001 db9981fd3124 8005915: Unify SERIALGC and INCLUDE_ALTERNATE_GCS jprovino parents: 6818 diff changeset	303 #endif // INCLUDE_ALL_GCS
0 a61af66fc99e Initial load duke parents: diff changeset	304
989 148e5441d916 6863023: need non-perm oops in code cache for JSR 292 jrose parents: 710 diff changeset	305 bool is_scavengable() const;
0 a61af66fc99e Initial load duke parents: diff changeset	306
a61af66fc99e Initial load duke parents: diff changeset	307 // Forward pointer operations for scavenge
a61af66fc99e Initial load duke parents: diff changeset	308 bool is_forwarded() const;
a61af66fc99e Initial load duke parents: diff changeset	309
a61af66fc99e Initial load duke parents: diff changeset	310 void forward_to(oop p);
a61af66fc99e Initial load duke parents: diff changeset	311 bool cas_forward_to(oop p, markOop compare);
a61af66fc99e Initial load duke parents: diff changeset	312
8001 db9981fd3124 8005915: Unify SERIALGC and INCLUDE_ALTERNATE_GCS jprovino parents: 6818 diff changeset	313 #if INCLUDE_ALL_GCS
0 a61af66fc99e Initial load duke parents: diff changeset	314 // Like "forward_to", but inserts the forwarding pointer atomically.
a61af66fc99e Initial load duke parents: diff changeset	315 // Exactly one thread succeeds in inserting the forwarding pointer, and
a61af66fc99e Initial load duke parents: diff changeset	316 // this call returns "NULL" for that thread; any other thread has the
a61af66fc99e Initial load duke parents: diff changeset	317 // value of the forwarding pointer returned and does not modify "this".
a61af66fc99e Initial load duke parents: diff changeset	318 oop forward_to_atomic(oop p);
8001 db9981fd3124 8005915: Unify SERIALGC and INCLUDE_ALTERNATE_GCS jprovino parents: 6818 diff changeset	319 #endif // INCLUDE_ALL_GCS
0 a61af66fc99e Initial load duke parents: diff changeset	320
a61af66fc99e Initial load duke parents: diff changeset	321 oop forwardee() const;
a61af66fc99e Initial load duke parents: diff changeset	322
a61af66fc99e Initial load duke parents: diff changeset	323 // Age of object during scavenge
6818 22b8d3d181d9 8000351: Tenuring threshold should be unsigned jwilhelm parents: 6725 diff changeset	324 uint age() const;
0 a61af66fc99e Initial load duke parents: diff changeset	325 void incr_age();
a61af66fc99e Initial load duke parents: diff changeset	326
a61af66fc99e Initial load duke parents: diff changeset	327 // Adjust all pointers in this object to point at it's forwarded location and
a61af66fc99e Initial load duke parents: diff changeset	328 // return the size of this oop. This is used by the MarkSweep collector.
a61af66fc99e Initial load duke parents: diff changeset	329 int adjust_pointers();
a61af66fc99e Initial load duke parents: diff changeset	330
a61af66fc99e Initial load duke parents: diff changeset	331 // mark-sweep support
a61af66fc99e Initial load duke parents: diff changeset	332 void follow_body(int begin, int end);
a61af66fc99e Initial load duke parents: diff changeset	333
a61af66fc99e Initial load duke parents: diff changeset	334 // Fast access to barrier set
a61af66fc99e Initial load duke parents: diff changeset	335 static BarrierSet* bs() { return _bs; }
a61af66fc99e Initial load duke parents: diff changeset	336 static void set_bs(BarrierSet* bs) { _bs = bs; }
a61af66fc99e Initial load duke parents: diff changeset	337
a61af66fc99e Initial load duke parents: diff changeset	338 // iterators, returns size of object
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: 135 diff changeset	339 #define OOP_ITERATE_DECL(OopClosureType, nv_suffix) \
0 a61af66fc99e Initial load duke parents: diff changeset	340 int oop_iterate(OopClosureType* blk); \
a61af66fc99e Initial load duke parents: diff changeset	341 int oop_iterate(OopClosureType* blk, MemRegion mr); // Only in mr.
a61af66fc99e Initial load duke parents: diff changeset	342
a61af66fc99e Initial load duke parents: diff changeset	343 ALL_OOP_OOP_ITERATE_CLOSURES_1(OOP_ITERATE_DECL)
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: 135 diff changeset	344 ALL_OOP_OOP_ITERATE_CLOSURES_2(OOP_ITERATE_DECL)
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: 135 diff changeset	345
8001 db9981fd3124 8005915: Unify SERIALGC and INCLUDE_ALTERNATE_GCS jprovino parents: 6818 diff changeset	346 #if INCLUDE_ALL_GCS
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: 135 diff changeset	347
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: 135 diff changeset	348 #define OOP_ITERATE_BACKWARDS_DECL(OopClosureType, nv_suffix) \
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: 135 diff changeset	349 int oop_iterate_backwards(OopClosureType* blk);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: 135 diff changeset	350
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: 135 diff changeset	351 ALL_OOP_OOP_ITERATE_CLOSURES_1(OOP_ITERATE_BACKWARDS_DECL)
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: 135 diff changeset	352 ALL_OOP_OOP_ITERATE_CLOSURES_2(OOP_ITERATE_BACKWARDS_DECL)
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: 135 diff changeset	353 #endif
0 a61af66fc99e Initial load duke parents: diff changeset	354
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	355 int oop_iterate_no_header(OopClosure* bk);
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	356 int oop_iterate_no_header(OopClosure* bk, MemRegion mr);
0 a61af66fc99e Initial load duke parents: diff changeset	357
a61af66fc99e Initial load duke parents: diff changeset	358 // identity hash; returns the identity hash key (computes it if necessary)
a61af66fc99e Initial load duke parents: diff changeset	359 // NOTE with the introduction of UseBiasedLocking that identity_hash() might reach a
a61af66fc99e Initial load duke parents: diff changeset	360 // safepoint if called on a biased object. Calling code must be aware of that.
a61af66fc99e Initial load duke parents: diff changeset	361 intptr_t identity_hash();
a61af66fc99e Initial load duke parents: diff changeset	362 intptr_t slow_identity_hash();
a61af66fc99e Initial load duke parents: diff changeset	363
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	364 // Alternate hashing code if string table is rehashed
14340 cd6b3f1a94ff 8033792: AltHashing used jint for imprecise bit shifting minqi parents: 14210 diff changeset	365 unsigned int new_hash(juint seed);
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6008 diff changeset	366
0 a61af66fc99e Initial load duke parents: diff changeset	367 // marks are forwarded to stack when object is locked
a61af66fc99e Initial load duke parents: diff changeset	368 bool has_displaced_mark() const;
a61af66fc99e Initial load duke parents: diff changeset	369 markOop displaced_mark() const;
a61af66fc99e Initial load duke parents: diff changeset	370 void set_displaced_mark(markOop m);
a61af66fc99e Initial load duke parents: diff changeset	371
a61af66fc99e Initial load duke parents: diff changeset	372 // for code generation
a61af66fc99e Initial load duke parents: diff changeset	373 static int mark_offset_in_bytes() { return offset_of(oopDesc, _mark); }
113 ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	374 static int klass_offset_in_bytes() { return offset_of(oopDesc, _metadata._klass); }
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	375 static int klass_gap_offset_in_bytes();
0 a61af66fc99e Initial load duke parents: diff changeset	376 };
1972 f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1706 diff changeset	377
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1706 diff changeset	378 #endif // SHARE_VM_OOPS_OOP_HPP

Mercurial > hg > truffle

annotate src/share/vm/oops/oop.hpp @ 14340:cd6b3f1a94ff