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

annotate src/share/vm/oops/oop.inline.hpp @ 113:ba764ed4b6f2

6420645: Create a vm that uses compressed oops for up to 32gb heapsizes Summary: Compressed oops in instances, arrays, and headers. Code contributors are coleenp, phh, never, swamyv Reviewed-by: jmasa, kamg, acorn, tbell, kvn, rasbold

author	coleenp
date	Sun, 13 Apr 2008 17:43:42 -0400
parents	a61af66fc99e
children	435e64505015

rev	line source
0 a61af66fc99e Initial load duke parents: diff changeset	1 /*
a61af66fc99e Initial load duke parents: diff changeset	2 * Copyright 1997-2007 Sun Microsystems, Inc. All Rights Reserved.
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 *
a61af66fc99e Initial load duke parents: diff changeset	19 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
a61af66fc99e Initial load duke parents: diff changeset	20 * CA 95054 USA or visit www.sun.com if you need additional information or
a61af66fc99e Initial load duke parents: diff changeset	21 * have any questions.
a61af66fc99e Initial load duke parents: diff changeset	22 *
a61af66fc99e Initial load duke parents: diff changeset	23 */
a61af66fc99e Initial load duke parents: diff changeset	24
a61af66fc99e Initial load duke parents: diff changeset	25 // Implementation of all inlined member functions defined in oop.hpp
a61af66fc99e Initial load duke parents: diff changeset	26 // We need a separate file to avoid circular references
a61af66fc99e Initial load duke parents: diff changeset	27
a61af66fc99e Initial load duke parents: diff changeset	28 inline void oopDesc::release_set_mark(markOop m) {
a61af66fc99e Initial load duke parents: diff changeset	29 OrderAccess::release_store_ptr(&_mark, m);
a61af66fc99e Initial load duke parents: diff changeset	30 }
a61af66fc99e Initial load duke parents: diff changeset	31
a61af66fc99e Initial load duke parents: diff changeset	32 inline markOop oopDesc::cas_set_mark(markOop new_mark, markOop old_mark) {
a61af66fc99e Initial load duke parents: diff changeset	33 return (markOop) Atomic::cmpxchg_ptr(new_mark, &_mark, old_mark);
a61af66fc99e Initial load duke parents: diff changeset	34 }
a61af66fc99e Initial load duke parents: diff changeset	35
113 ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	36 inline klassOop oopDesc::klass() const {
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	37 if (UseCompressedOops) {
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	38 return (klassOop)decode_heap_oop_not_null(_metadata._compressed_klass);
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	39 // can be NULL in CMS, but isn't supported on CMS yet.
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	40 } else {
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	41 return _metadata._klass;
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	42 }
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	43 }
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	44
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	45 inline int oopDesc::klass_gap_offset_in_bytes() {
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	46 assert(UseCompressedOops, "only applicable to compressed headers");
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	47 return oopDesc::klass_offset_in_bytes() + sizeof(narrowOop);
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	48 }
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	49
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	50 inline oop* oopDesc::klass_addr() {
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	51 // Only used internally and with CMS and will not work with
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	52 // UseCompressedOops
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	53 assert(!UseCompressedOops, "only supported with uncompressed oops");
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	54 return (oop*) &_metadata._klass;
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	55 }
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	56
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	57 inline narrowOop* oopDesc::compressed_klass_addr() {
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	58 assert(UseCompressedOops, "only called by compressed oops");
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	59 return (narrowOop*) &_metadata._compressed_klass;
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	60 }
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	61
0 a61af66fc99e Initial load duke parents: diff changeset	62 inline void oopDesc::set_klass(klassOop k) {
a61af66fc99e Initial load duke parents: diff changeset	63 // since klasses are promoted no store check is needed
a61af66fc99e Initial load duke parents: diff changeset	64 assert(Universe::is_bootstrapping() \|\| k != NULL, "must be a real klassOop");
a61af66fc99e Initial load duke parents: diff changeset	65 assert(Universe::is_bootstrapping() \|\| k->is_klass(), "not a klassOop");
113 ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	66 if (UseCompressedOops) {
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	67 // zero the gap when the klass is set, by zeroing the pointer sized
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	68 // part of the union.
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	69 _metadata._klass = NULL;
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	70 oop_store_without_check(compressed_klass_addr(), (oop)k);
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	71 } else {
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	72 oop_store_without_check(klass_addr(), (oop) k);
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	73 }
0 a61af66fc99e Initial load duke parents: diff changeset	74 }
a61af66fc99e Initial load duke parents: diff changeset	75
a61af66fc99e Initial load duke parents: diff changeset	76 inline void oopDesc::set_klass_to_list_ptr(oop k) {
a61af66fc99e Initial load duke parents: diff changeset	77 // This is only to be used during GC, for from-space objects, so no
a61af66fc99e Initial load duke parents: diff changeset	78 // barrier is needed.
113 ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	79 if (UseCompressedOops) {
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	80 _metadata._compressed_klass = encode_heap_oop_not_null(k);
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	81 } else {
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	82 _metadata._klass = (klassOop)k;
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	83 }
0 a61af66fc99e Initial load duke parents: diff changeset	84 }
a61af66fc99e Initial load duke parents: diff changeset	85
a61af66fc99e Initial load duke parents: diff changeset	86 inline void oopDesc::init_mark() { set_mark(markOopDesc::prototype_for_object(this)); }
a61af66fc99e Initial load duke parents: diff changeset	87 inline Klass* oopDesc::blueprint() const { return klass()->klass_part(); }
a61af66fc99e Initial load duke parents: diff changeset	88
a61af66fc99e Initial load duke parents: diff changeset	89 inline bool oopDesc::is_a(klassOop k) const { return blueprint()->is_subtype_of(k); }
a61af66fc99e Initial load duke parents: diff changeset	90
a61af66fc99e Initial load duke parents: diff changeset	91 inline bool oopDesc::is_instance() const { return blueprint()->oop_is_instance(); }
a61af66fc99e Initial load duke parents: diff changeset	92 inline bool oopDesc::is_instanceRef() const { return blueprint()->oop_is_instanceRef(); }
a61af66fc99e Initial load duke parents: diff changeset	93 inline bool oopDesc::is_array() const { return blueprint()->oop_is_array(); }
a61af66fc99e Initial load duke parents: diff changeset	94 inline bool oopDesc::is_objArray() const { return blueprint()->oop_is_objArray(); }
a61af66fc99e Initial load duke parents: diff changeset	95 inline bool oopDesc::is_typeArray() const { return blueprint()->oop_is_typeArray(); }
a61af66fc99e Initial load duke parents: diff changeset	96 inline bool oopDesc::is_javaArray() const { return blueprint()->oop_is_javaArray(); }
a61af66fc99e Initial load duke parents: diff changeset	97 inline bool oopDesc::is_symbol() const { return blueprint()->oop_is_symbol(); }
a61af66fc99e Initial load duke parents: diff changeset	98 inline bool oopDesc::is_klass() const { return blueprint()->oop_is_klass(); }
a61af66fc99e Initial load duke parents: diff changeset	99 inline bool oopDesc::is_thread() const { return blueprint()->oop_is_thread(); }
a61af66fc99e Initial load duke parents: diff changeset	100 inline bool oopDesc::is_method() const { return blueprint()->oop_is_method(); }
a61af66fc99e Initial load duke parents: diff changeset	101 inline bool oopDesc::is_constMethod() const { return blueprint()->oop_is_constMethod(); }
a61af66fc99e Initial load duke parents: diff changeset	102 inline bool oopDesc::is_methodData() const { return blueprint()->oop_is_methodData(); }
a61af66fc99e Initial load duke parents: diff changeset	103 inline bool oopDesc::is_constantPool() const { return blueprint()->oop_is_constantPool(); }
a61af66fc99e Initial load duke parents: diff changeset	104 inline bool oopDesc::is_constantPoolCache() const { return blueprint()->oop_is_constantPoolCache(); }
a61af66fc99e Initial load duke parents: diff changeset	105 inline bool oopDesc::is_compiledICHolder() const { return blueprint()->oop_is_compiledICHolder(); }
a61af66fc99e Initial load duke parents: diff changeset	106
a61af66fc99e Initial load duke parents: diff changeset	107 inline void* oopDesc::field_base(int offset) const { return (void)&((char)this)[offset]; }
a61af66fc99e Initial load duke parents: diff changeset	108
113 ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	109 template <class T> inline T* oopDesc::obj_field_addr(int offset) const { return (T*)field_base(offset); }
0 a61af66fc99e Initial load duke parents: diff changeset	110 inline jbyte* oopDesc::byte_field_addr(int offset) const { return (jbyte*) field_base(offset); }
a61af66fc99e Initial load duke parents: diff changeset	111 inline jchar* oopDesc::char_field_addr(int offset) const { return (jchar*) field_base(offset); }
a61af66fc99e Initial load duke parents: diff changeset	112 inline jboolean* oopDesc::bool_field_addr(int offset) const { return (jboolean*)field_base(offset); }
a61af66fc99e Initial load duke parents: diff changeset	113 inline jint* oopDesc::int_field_addr(int offset) const { return (jint*) field_base(offset); }
a61af66fc99e Initial load duke parents: diff changeset	114 inline jshort* oopDesc::short_field_addr(int offset) const { return (jshort*) field_base(offset); }
a61af66fc99e Initial load duke parents: diff changeset	115 inline jlong* oopDesc::long_field_addr(int offset) const { return (jlong*) field_base(offset); }
a61af66fc99e Initial load duke parents: diff changeset	116 inline jfloat* oopDesc::float_field_addr(int offset) const { return (jfloat*) field_base(offset); }
a61af66fc99e Initial load duke parents: diff changeset	117 inline jdouble* oopDesc::double_field_addr(int offset) const { return (jdouble*) field_base(offset); }
113 ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	118 inline address* oopDesc::address_field_addr(int offset) const { return (address*) field_base(offset); }
0 a61af66fc99e Initial load duke parents: diff changeset	119
113 ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	120
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	121 // Functions for getting and setting oops within instance objects.
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	122 // If the oops are compressed, the type passed to these overloaded functions
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	123 // is narrowOop. All functions are overloaded so they can be called by
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	124 // template functions without conditionals (the compiler instantiates via
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	125 // the right type and inlines the appopriate code).
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	126
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	127 inline bool oopDesc::is_null(oop obj) { return obj == NULL; }
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	128 inline bool oopDesc::is_null(narrowOop obj) { return obj == 0; }
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	129
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	130 // Algorithm for encoding and decoding oops from 64 bit pointers to 32 bit
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	131 // offset from the heap base. Saving the check for null can save instructions
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	132 // in inner GC loops so these are separated.
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	133
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	134 inline narrowOop oopDesc::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	135 assert(!is_null(v), "oop value can never be zero");
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	136 address heap_base = Universe::heap_base();
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	137 uint64_t result = (uint64_t)(pointer_delta((void)v, (void)heap_base, 1) >> LogMinObjAlignmentInBytes);
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	138 assert((result & 0xffffffff00000000L) == 0, "narrow oop overflow");
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	139 return (narrowOop)result;
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	140 }
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	141
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	142 inline narrowOop oopDesc::encode_heap_oop(oop v) {
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	143 return (is_null(v)) ? (narrowOop)0 : encode_heap_oop_not_null(v);
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	144 }
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	145
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	146 inline oop oopDesc::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	147 assert(!is_null(v), "narrow oop value can never be zero");
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	148 address heap_base = Universe::heap_base();
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	149 return (oop)(void*)((uintptr_t)heap_base + ((uintptr_t)v << LogMinObjAlignmentInBytes));
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	150 }
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 inline oop oopDesc::decode_heap_oop(narrowOop v) {
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	153 return is_null(v) ? (oop)NULL : decode_heap_oop_not_null(v);
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	154 }
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	155
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	156 inline oop oopDesc::decode_heap_oop_not_null(oop v) { return v; }
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	157 inline oop oopDesc::decode_heap_oop(oop v) { return v; }
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	158
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	159 // Load an oop out of the Java heap as is without decoding.
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	160 // Called by GC to check for null before decoding.
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	161 inline oop oopDesc::load_heap_oop(oop* p) { return *p; }
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	162 inline narrowOop oopDesc::load_heap_oop(narrowOop* p) { return *p; }
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	163
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	164 // Load and decode an oop out of the Java heap into a wide oop.
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	165 inline oop oopDesc::load_decode_heap_oop_not_null(oop* p) { return *p; }
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	166 inline oop oopDesc::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	167 return decode_heap_oop_not_null(*p);
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	168 }
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	169
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	170 // Load and decode an oop out of the heap accepting null
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	171 inline oop oopDesc::load_decode_heap_oop(oop* p) { return *p; }
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	172 inline oop oopDesc::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	173 return decode_heap_oop(*p);
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	174 }
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	175
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	176 // Store already encoded heap oop into the heap.
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	177 inline void oopDesc::store_heap_oop(oop* p, oop v) { *p = v; }
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	178 inline void oopDesc::store_heap_oop(narrowOop* p, narrowOop v) { *p = v; }
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	179
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	180 // Encode and store a heap oop.
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	181 inline void oopDesc::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	182 *p = encode_heap_oop_not_null(v);
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	183 }
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	184 inline void oopDesc::encode_store_heap_oop_not_null(oop* p, oop v) { *p = 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 // Encode and store a heap oop allowing for null.
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	187 inline void oopDesc::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	188 *p = encode_heap_oop(v);
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	189 }
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	190 inline void oopDesc::encode_store_heap_oop(oop* p, oop v) { *p = v; }
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	191
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	192 // Store heap oop as is for volatile fields.
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	193 inline void oopDesc::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	194 OrderAccess::release_store_ptr(p, v);
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	195 }
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	196 inline void oopDesc::release_store_heap_oop(volatile narrowOop* p,
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	197 narrowOop v) {
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	198 OrderAccess::release_store(p, v);
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	199 }
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	200
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	201 inline void oopDesc::release_encode_store_heap_oop_not_null(
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	202 volatile narrowOop* p, oop v) {
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	203 // heap oop is not pointer sized.
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	204 OrderAccess::release_store(p, encode_heap_oop_not_null(v));
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	205 }
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	206
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	207 inline void oopDesc::release_encode_store_heap_oop_not_null(
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	208 volatile oop* p, oop v) {
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	209 OrderAccess::release_store_ptr(p, v);
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	210 }
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	211
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	212 inline void oopDesc::release_encode_store_heap_oop(volatile oop* p,
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	213 oop v) {
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	214 OrderAccess::release_store_ptr(p, v);
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	215 }
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	216 inline void oopDesc::release_encode_store_heap_oop(
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	217 volatile narrowOop* p, oop v) {
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	218 OrderAccess::release_store(p, encode_heap_oop(v));
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	219 }
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	220
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	221
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	222 // These functions are only used to exchange oop fields in instances,
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	223 // not headers.
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	224 inline oop oopDesc::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	225 if (UseCompressedOops) {
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	226 // encode exchange value from oop to T
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	227 narrowOop val = encode_heap_oop(exchange_value);
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	228 narrowOop old = (narrowOop)Atomic::xchg(val, (narrowOop*)dest);
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	229 // decode old from T to oop
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	230 return decode_heap_oop(old);
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	231 } else {
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	232 return (oop)Atomic::xchg_ptr(exchange_value, (oop*)dest);
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	233 }
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	234 }
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	235
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	236 inline oop oopDesc::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	237 volatile HeapWord *dest,
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	238 oop compare_value) {
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	239 if (UseCompressedOops) {
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	240 // encode exchange and compare value from oop to T
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	241 narrowOop val = encode_heap_oop(exchange_value);
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	242 narrowOop cmp = encode_heap_oop(compare_value);
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	243
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	244 narrowOop old = (narrowOop) Atomic::cmpxchg(val, (narrowOop*)dest, cmp);
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	245 // decode old from T to oop
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	246 return decode_heap_oop(old);
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	247 } else {
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	248 return (oop)Atomic::cmpxchg_ptr(exchange_value, (oop*)dest, compare_value);
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	249 }
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	250 }
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	251
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	252 // In order to put or get a field out of an instance, must first check
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	253 // if the field has been compressed and uncompress it.
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	254 inline oop oopDesc::obj_field(int offset) const {
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	255 return UseCompressedOops ?
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	256 load_decode_heap_oop(obj_field_addr<narrowOop>(offset)) :
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	257 load_decode_heap_oop(obj_field_addr<oop>(offset));
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	258 }
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	259 inline void oopDesc::obj_field_put(int offset, oop value) {
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	260 UseCompressedOops ? oop_store(obj_field_addr<narrowOop>(offset), value) :
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	261 oop_store(obj_field_addr<oop>(offset), value);
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	262 }
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	263 inline void oopDesc::obj_field_raw_put(int offset, oop value) {
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	264 UseCompressedOops ?
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	265 encode_store_heap_oop(obj_field_addr<narrowOop>(offset), value) :
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	266 encode_store_heap_oop(obj_field_addr<oop>(offset), value);
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	267 }
0 a61af66fc99e Initial load duke parents: diff changeset	268
a61af66fc99e Initial load duke parents: diff changeset	269 inline jbyte oopDesc::byte_field(int offset) const { return (jbyte) *byte_field_addr(offset); }
a61af66fc99e Initial load duke parents: diff changeset	270 inline void oopDesc::byte_field_put(int offset, jbyte contents) { *byte_field_addr(offset) = (jint) contents; }
a61af66fc99e Initial load duke parents: diff changeset	271
a61af66fc99e Initial load duke parents: diff changeset	272 inline jboolean oopDesc::bool_field(int offset) const { return (jboolean) *bool_field_addr(offset); }
a61af66fc99e Initial load duke parents: diff changeset	273 inline void oopDesc::bool_field_put(int offset, jboolean contents) { *bool_field_addr(offset) = (jint) contents; }
a61af66fc99e Initial load duke parents: diff changeset	274
a61af66fc99e Initial load duke parents: diff changeset	275 inline jchar oopDesc::char_field(int offset) const { return (jchar) *char_field_addr(offset); }
a61af66fc99e Initial load duke parents: diff changeset	276 inline void oopDesc::char_field_put(int offset, jchar contents) { *char_field_addr(offset) = (jint) contents; }
a61af66fc99e Initial load duke parents: diff changeset	277
a61af66fc99e Initial load duke parents: diff changeset	278 inline jint oopDesc::int_field(int offset) const { return *int_field_addr(offset); }
a61af66fc99e Initial load duke parents: diff changeset	279 inline void oopDesc::int_field_put(int offset, jint contents) { *int_field_addr(offset) = contents; }
a61af66fc99e Initial load duke parents: diff changeset	280
a61af66fc99e Initial load duke parents: diff changeset	281 inline jshort oopDesc::short_field(int offset) const { return (jshort) *short_field_addr(offset); }
a61af66fc99e Initial load duke parents: diff changeset	282 inline void oopDesc::short_field_put(int offset, jshort contents) { *short_field_addr(offset) = (jint) contents;}
a61af66fc99e Initial load duke parents: diff changeset	283
a61af66fc99e Initial load duke parents: diff changeset	284 inline jlong oopDesc::long_field(int offset) const { return *long_field_addr(offset); }
a61af66fc99e Initial load duke parents: diff changeset	285 inline void oopDesc::long_field_put(int offset, jlong contents) { *long_field_addr(offset) = contents; }
a61af66fc99e Initial load duke parents: diff changeset	286
a61af66fc99e Initial load duke parents: diff changeset	287 inline jfloat oopDesc::float_field(int offset) const { return *float_field_addr(offset); }
a61af66fc99e Initial load duke parents: diff changeset	288 inline void oopDesc::float_field_put(int offset, jfloat contents) { *float_field_addr(offset) = contents; }
a61af66fc99e Initial load duke parents: diff changeset	289
a61af66fc99e Initial load duke parents: diff changeset	290 inline jdouble oopDesc::double_field(int offset) const { return *double_field_addr(offset); }
a61af66fc99e Initial load duke parents: diff changeset	291 inline void oopDesc::double_field_put(int offset, jdouble contents) { *double_field_addr(offset) = contents; }
a61af66fc99e Initial load duke parents: diff changeset	292
113 ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	293 inline address oopDesc::address_field(int offset) const { return *address_field_addr(offset); }
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	294 inline void oopDesc::address_field_put(int offset, address contents) { *address_field_addr(offset) = contents; }
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	295
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	296 inline oop oopDesc::obj_field_acquire(int offset) const {
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	297 return UseCompressedOops ?
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	298 decode_heap_oop((narrowOop)
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	299 OrderAccess::load_acquire(obj_field_addr<narrowOop>(offset)))
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	300 : decode_heap_oop((oop)
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	301 OrderAccess::load_ptr_acquire(obj_field_addr<oop>(offset)));
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	302 }
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	303 inline void oopDesc::release_obj_field_put(int offset, oop value) {
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	304 UseCompressedOops ?
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	305 oop_store((volatile narrowOop*)obj_field_addr<narrowOop>(offset), value) :
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	306 oop_store((volatile oop*) obj_field_addr<oop>(offset), value);
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	307 }
0 a61af66fc99e Initial load duke parents: diff changeset	308
a61af66fc99e Initial load duke parents: diff changeset	309 inline jbyte oopDesc::byte_field_acquire(int offset) const { return OrderAccess::load_acquire(byte_field_addr(offset)); }
a61af66fc99e Initial load duke parents: diff changeset	310 inline void oopDesc::release_byte_field_put(int offset, jbyte contents) { OrderAccess::release_store(byte_field_addr(offset), contents); }
a61af66fc99e Initial load duke parents: diff changeset	311
a61af66fc99e Initial load duke parents: diff changeset	312 inline jboolean oopDesc::bool_field_acquire(int offset) const { return OrderAccess::load_acquire(bool_field_addr(offset)); }
a61af66fc99e Initial load duke parents: diff changeset	313 inline void oopDesc::release_bool_field_put(int offset, jboolean contents) { OrderAccess::release_store(bool_field_addr(offset), contents); }
a61af66fc99e Initial load duke parents: diff changeset	314
a61af66fc99e Initial load duke parents: diff changeset	315 inline jchar oopDesc::char_field_acquire(int offset) const { return OrderAccess::load_acquire(char_field_addr(offset)); }
a61af66fc99e Initial load duke parents: diff changeset	316 inline void oopDesc::release_char_field_put(int offset, jchar contents) { OrderAccess::release_store(char_field_addr(offset), contents); }
a61af66fc99e Initial load duke parents: diff changeset	317
a61af66fc99e Initial load duke parents: diff changeset	318 inline jint oopDesc::int_field_acquire(int offset) const { return OrderAccess::load_acquire(int_field_addr(offset)); }
a61af66fc99e Initial load duke parents: diff changeset	319 inline void oopDesc::release_int_field_put(int offset, jint contents) { OrderAccess::release_store(int_field_addr(offset), contents); }
a61af66fc99e Initial load duke parents: diff changeset	320
a61af66fc99e Initial load duke parents: diff changeset	321 inline jshort oopDesc::short_field_acquire(int offset) const { return (jshort)OrderAccess::load_acquire(short_field_addr(offset)); }
a61af66fc99e Initial load duke parents: diff changeset	322 inline void oopDesc::release_short_field_put(int offset, jshort contents) { OrderAccess::release_store(short_field_addr(offset), contents); }
a61af66fc99e Initial load duke parents: diff changeset	323
a61af66fc99e Initial load duke parents: diff changeset	324 inline jlong oopDesc::long_field_acquire(int offset) const { return OrderAccess::load_acquire(long_field_addr(offset)); }
a61af66fc99e Initial load duke parents: diff changeset	325 inline void oopDesc::release_long_field_put(int offset, jlong contents) { OrderAccess::release_store(long_field_addr(offset), contents); }
a61af66fc99e Initial load duke parents: diff changeset	326
a61af66fc99e Initial load duke parents: diff changeset	327 inline jfloat oopDesc::float_field_acquire(int offset) const { return OrderAccess::load_acquire(float_field_addr(offset)); }
a61af66fc99e Initial load duke parents: diff changeset	328 inline void oopDesc::release_float_field_put(int offset, jfloat contents) { OrderAccess::release_store(float_field_addr(offset), contents); }
a61af66fc99e Initial load duke parents: diff changeset	329
a61af66fc99e Initial load duke parents: diff changeset	330 inline jdouble oopDesc::double_field_acquire(int offset) const { return OrderAccess::load_acquire(double_field_addr(offset)); }
a61af66fc99e Initial load duke parents: diff changeset	331 inline void oopDesc::release_double_field_put(int offset, jdouble contents) { OrderAccess::release_store(double_field_addr(offset), contents); }
a61af66fc99e Initial load duke parents: diff changeset	332
a61af66fc99e Initial load duke parents: diff changeset	333 inline int oopDesc::size_given_klass(Klass* klass) {
a61af66fc99e Initial load duke parents: diff changeset	334 int lh = klass->layout_helper();
a61af66fc99e Initial load duke parents: diff changeset	335 int s = lh >> LogHeapWordSize; // deliver size scaled by wordSize
a61af66fc99e Initial load duke parents: diff changeset	336
a61af66fc99e Initial load duke parents: diff changeset	337 // lh is now a value computed at class initialization that may hint
a61af66fc99e Initial load duke parents: diff changeset	338 // at the size. For instances, this is positive and equal to the
a61af66fc99e Initial load duke parents: diff changeset	339 // size. For arrays, this is negative and provides log2 of the
a61af66fc99e Initial load duke parents: diff changeset	340 // array element size. For other oops, it is zero and thus requires
a61af66fc99e Initial load duke parents: diff changeset	341 // a virtual call.
a61af66fc99e Initial load duke parents: diff changeset	342 //
a61af66fc99e Initial load duke parents: diff changeset	343 // We go to all this trouble because the size computation is at the
a61af66fc99e Initial load duke parents: diff changeset	344 // heart of phase 2 of mark-compaction, and called for every object,
a61af66fc99e Initial load duke parents: diff changeset	345 // alive or dead. So the speed here is equal in importance to the
a61af66fc99e Initial load duke parents: diff changeset	346 // speed of allocation.
a61af66fc99e Initial load duke parents: diff changeset	347
a61af66fc99e Initial load duke parents: diff changeset	348 if (lh <= Klass::_lh_neutral_value) {
a61af66fc99e Initial load duke parents: diff changeset	349 // The most common case is instances; fall through if so.
a61af66fc99e Initial load duke parents: diff changeset	350 if (lh < Klass::_lh_neutral_value) {
a61af66fc99e Initial load duke parents: diff changeset	351 // Second most common case is arrays. We have to fetch the
a61af66fc99e Initial load duke parents: diff changeset	352 // length of the array, shift (multiply) it appropriately,
a61af66fc99e Initial load duke parents: diff changeset	353 // up to wordSize, add the header, and align to object size.
a61af66fc99e Initial load duke parents: diff changeset	354 size_t size_in_bytes;
a61af66fc99e Initial load duke parents: diff changeset	355 #ifdef _M_IA64
a61af66fc99e Initial load duke parents: diff changeset	356 // The Windows Itanium Aug 2002 SDK hoists this load above
a61af66fc99e Initial load duke parents: diff changeset	357 // the check for s < 0. An oop at the end of the heap will
a61af66fc99e Initial load duke parents: diff changeset	358 // cause an access violation if this load is performed on a non
a61af66fc99e Initial load duke parents: diff changeset	359 // array oop. Making the reference volatile prohibits this.
a61af66fc99e Initial load duke parents: diff changeset	360 // (%%% please explain by what magic the length is actually fetched!)
a61af66fc99e Initial load duke parents: diff changeset	361 volatile int *array_length;
a61af66fc99e Initial load duke parents: diff changeset	362 array_length = (volatile int *)( (intptr_t)this +
a61af66fc99e Initial load duke parents: diff changeset	363 arrayOopDesc::length_offset_in_bytes() );
a61af66fc99e Initial load duke parents: diff changeset	364 assert(array_length > 0, "Integer arithmetic problem somewhere");
a61af66fc99e Initial load duke parents: diff changeset	365 // Put into size_t to avoid overflow.
a61af66fc99e Initial load duke parents: diff changeset	366 size_in_bytes = (size_t) array_length;
a61af66fc99e Initial load duke parents: diff changeset	367 size_in_bytes = size_in_bytes << Klass::layout_helper_log2_element_size(lh);
a61af66fc99e Initial load duke parents: diff changeset	368 #else
a61af66fc99e Initial load duke parents: diff changeset	369 size_t array_length = (size_t) ((arrayOop)this)->length();
a61af66fc99e Initial load duke parents: diff changeset	370 size_in_bytes = array_length << Klass::layout_helper_log2_element_size(lh);
a61af66fc99e Initial load duke parents: diff changeset	371 #endif
a61af66fc99e Initial load duke parents: diff changeset	372 size_in_bytes += Klass::layout_helper_header_size(lh);
a61af66fc99e Initial load duke parents: diff changeset	373
a61af66fc99e Initial load duke parents: diff changeset	374 // This code could be simplified, but by keeping array_header_in_bytes
a61af66fc99e Initial load duke parents: diff changeset	375 // in units of bytes and doing it this way we can round up just once,
a61af66fc99e Initial load duke parents: diff changeset	376 // skipping the intermediate round to HeapWordSize. Cast the result
a61af66fc99e Initial load duke parents: diff changeset	377 // of round_to to size_t to guarantee unsigned division == right shift.
a61af66fc99e Initial load duke parents: diff changeset	378 s = (int)((size_t)round_to(size_in_bytes, MinObjAlignmentInBytes) /
a61af66fc99e Initial load duke parents: diff changeset	379 HeapWordSize);
a61af66fc99e Initial load duke parents: diff changeset	380
a61af66fc99e Initial load duke parents: diff changeset	381 // UseParNewGC can change the length field of an "old copy" of an object
a61af66fc99e Initial load duke parents: diff changeset	382 // array in the young gen so it indicates the stealable portion of
a61af66fc99e Initial load duke parents: diff changeset	383 // an already copied array. This will cause the first disjunct below
a61af66fc99e Initial load duke parents: diff changeset	384 // to fail if the sizes are computed across such a concurrent change.
a61af66fc99e Initial load duke parents: diff changeset	385 // UseParNewGC also runs with promotion labs (which look like int
a61af66fc99e Initial load duke parents: diff changeset	386 // filler arrays) which are subject to changing their declared size
a61af66fc99e Initial load duke parents: diff changeset	387 // when finally retiring a PLAB; this also can cause the first disjunct
a61af66fc99e Initial load duke parents: diff changeset	388 // to fail for another worker thread that is concurrently walking the block
a61af66fc99e Initial load duke parents: diff changeset	389 // offset table. Both these invariant failures are benign for their
a61af66fc99e Initial load duke parents: diff changeset	390 // current uses; we relax the assertion checking to cover these two cases below:
a61af66fc99e Initial load duke parents: diff changeset	391 // is_objArray() && is_forwarded() // covers first scenario above
a61af66fc99e Initial load duke parents: diff changeset	392 // \|\| is_typeArray() // covers second scenario above
a61af66fc99e Initial load duke parents: diff changeset	393 // If and when UseParallelGC uses the same obj array oop stealing/chunking
a61af66fc99e Initial load duke parents: diff changeset	394 // technique, or when G1 is integrated (and currently uses this array chunking
a61af66fc99e Initial load duke parents: diff changeset	395 // technique) we will need to suitably modify the assertion.
a61af66fc99e Initial load duke parents: diff changeset	396 assert((s == klass->oop_size(this)) \|\|
a61af66fc99e Initial load duke parents: diff changeset	397 (((UseParNewGC \|\| UseParallelGC) &&
113 ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	398 Universe::heap()->is_gc_active()) &&
0 a61af66fc99e Initial load duke parents: diff changeset	399 (is_typeArray() \|\|
a61af66fc99e Initial load duke parents: diff changeset	400 (is_objArray() && is_forwarded()))),
a61af66fc99e Initial load duke parents: diff changeset	401 "wrong array object size");
a61af66fc99e Initial load duke parents: diff changeset	402 } else {
a61af66fc99e Initial load duke parents: diff changeset	403 // Must be zero, so bite the bullet and take the virtual call.
a61af66fc99e Initial load duke parents: diff changeset	404 s = klass->oop_size(this);
a61af66fc99e Initial load duke parents: diff changeset	405 }
a61af66fc99e Initial load duke parents: diff changeset	406 }
a61af66fc99e Initial load duke parents: diff changeset	407
a61af66fc99e Initial load duke parents: diff changeset	408 assert(s % MinObjAlignment == 0, "alignment check");
a61af66fc99e Initial load duke parents: diff changeset	409 assert(s > 0, "Bad size calculated");
a61af66fc99e Initial load duke parents: diff changeset	410 return s;
a61af66fc99e Initial load duke parents: diff changeset	411 }
a61af66fc99e Initial load duke parents: diff changeset	412
a61af66fc99e Initial load duke parents: diff changeset	413
a61af66fc99e Initial load duke parents: diff changeset	414 inline int oopDesc::size() {
a61af66fc99e Initial load duke parents: diff changeset	415 return size_given_klass(blueprint());
a61af66fc99e Initial load duke parents: diff changeset	416 }
a61af66fc99e Initial load duke parents: diff changeset	417
a61af66fc99e Initial load duke parents: diff changeset	418 inline bool oopDesc::is_parsable() {
a61af66fc99e Initial load duke parents: diff changeset	419 return blueprint()->oop_is_parsable(this);
a61af66fc99e Initial load duke parents: diff changeset	420 }
a61af66fc99e Initial load duke parents: diff changeset	421
113 ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	422 inline void update_barrier_set(void* p, oop v) {
0 a61af66fc99e Initial load duke parents: diff changeset	423 assert(oopDesc::bs() != NULL, "Uninitialized bs in oop!");
a61af66fc99e Initial load duke parents: diff changeset	424 oopDesc::bs()->write_ref_field(p, v);
a61af66fc99e Initial load duke parents: diff changeset	425 }
a61af66fc99e Initial load duke parents: diff changeset	426
113 ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	427 template <class T> inline void oop_store(T* p, oop v) {
0 a61af66fc99e Initial load duke parents: diff changeset	428 if (always_do_update_barrier) {
113 ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	429 oop_store((volatile T*)p, v);
0 a61af66fc99e Initial load duke parents: diff changeset	430 } else {
113 ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	431 oopDesc::encode_store_heap_oop(p, v);
0 a61af66fc99e Initial load duke parents: diff changeset	432 update_barrier_set(p, v);
a61af66fc99e Initial load duke parents: diff changeset	433 }
a61af66fc99e Initial load duke parents: diff changeset	434 }
a61af66fc99e Initial load duke parents: diff changeset	435
113 ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	436 template <class T> inline void oop_store(volatile T* p, oop v) {
0 a61af66fc99e Initial load duke parents: diff changeset	437 // Used by release_obj_field_put, so use release_store_ptr.
113 ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	438 oopDesc::release_encode_store_heap_oop(p, v);
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	439 update_barrier_set((void*)p, v);
0 a61af66fc99e Initial load duke parents: diff changeset	440 }
a61af66fc99e Initial load duke parents: diff changeset	441
113 ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	442 template <class T> inline void oop_store_without_check(T* p, oop v) {
0 a61af66fc99e Initial load duke parents: diff changeset	443 // XXX YSR FIX ME!!!
a61af66fc99e Initial load duke parents: diff changeset	444 if (always_do_update_barrier) {
113 ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	445 oop_store(p, v);
0 a61af66fc99e Initial load duke parents: diff changeset	446 } else {
a61af66fc99e Initial load duke parents: diff changeset	447 assert(!Universe::heap()->barrier_set()->write_ref_needs_barrier(p, v),
a61af66fc99e Initial load duke parents: diff changeset	448 "oop store without store check failed");
113 ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	449 oopDesc::encode_store_heap_oop(p, v);
0 a61af66fc99e Initial load duke parents: diff changeset	450 }
a61af66fc99e Initial load duke parents: diff changeset	451 }
a61af66fc99e Initial load duke parents: diff changeset	452
a61af66fc99e Initial load duke parents: diff changeset	453 // When it absolutely has to get there.
113 ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	454 template <class T> inline void oop_store_without_check(volatile T* p, oop v) {
0 a61af66fc99e Initial load duke parents: diff changeset	455 // XXX YSR FIX ME!!!
a61af66fc99e Initial load duke parents: diff changeset	456 if (always_do_update_barrier) {
a61af66fc99e Initial load duke parents: diff changeset	457 oop_store(p, v);
a61af66fc99e Initial load duke parents: diff changeset	458 } else {
113 ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	459 assert(!Universe::heap()->barrier_set()->write_ref_needs_barrier((T*)p, v),
0 a61af66fc99e Initial load duke parents: diff changeset	460 "oop store without store check failed");
113 ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	461 oopDesc::release_encode_store_heap_oop(p, v);
0 a61af66fc99e Initial load duke parents: diff changeset	462 }
a61af66fc99e Initial load duke parents: diff changeset	463 }
a61af66fc99e Initial load duke parents: diff changeset	464
113 ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	465 // Should replace *addr = oop assignments where addr type depends on UseCompressedOops
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	466 // (without having to remember the function name this calls).
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	467 inline void oop_store_raw(HeapWord* addr, oop value) {
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	468 if (UseCompressedOops) {
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	469 oopDesc::encode_store_heap_oop((narrowOop*)addr, value);
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	470 } else {
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	471 oopDesc::encode_store_heap_oop((oop*)addr, value);
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	472 }
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	473 }
0 a61af66fc99e Initial load duke parents: diff changeset	474
a61af66fc99e Initial load duke parents: diff changeset	475 // Used only for markSweep, scavenging
a61af66fc99e Initial load duke parents: diff changeset	476 inline bool oopDesc::is_gc_marked() const {
a61af66fc99e Initial load duke parents: diff changeset	477 return mark()->is_marked();
a61af66fc99e Initial load duke parents: diff changeset	478 }
a61af66fc99e Initial load duke parents: diff changeset	479
a61af66fc99e Initial load duke parents: diff changeset	480 inline bool oopDesc::is_locked() const {
a61af66fc99e Initial load duke parents: diff changeset	481 return mark()->is_locked();
a61af66fc99e Initial load duke parents: diff changeset	482 }
a61af66fc99e Initial load duke parents: diff changeset	483
a61af66fc99e Initial load duke parents: diff changeset	484 inline bool oopDesc::is_unlocked() const {
a61af66fc99e Initial load duke parents: diff changeset	485 return mark()->is_unlocked();
a61af66fc99e Initial load duke parents: diff changeset	486 }
a61af66fc99e Initial load duke parents: diff changeset	487
a61af66fc99e Initial load duke parents: diff changeset	488 inline bool oopDesc::has_bias_pattern() const {
a61af66fc99e Initial load duke parents: diff changeset	489 return mark()->has_bias_pattern();
a61af66fc99e Initial load duke parents: diff changeset	490 }
a61af66fc99e Initial load duke parents: diff changeset	491
a61af66fc99e Initial load duke parents: diff changeset	492 inline bool check_obj_alignment(oop obj) {
a61af66fc99e Initial load duke parents: diff changeset	493 return (intptr_t)obj % MinObjAlignmentInBytes == 0;
a61af66fc99e Initial load duke parents: diff changeset	494 }
a61af66fc99e Initial load duke parents: diff changeset	495
a61af66fc99e Initial load duke parents: diff changeset	496
a61af66fc99e Initial load duke parents: diff changeset	497 // used only for asserts
a61af66fc99e Initial load duke parents: diff changeset	498 inline bool oopDesc::is_oop(bool ignore_mark_word) const {
a61af66fc99e Initial load duke parents: diff changeset	499 oop obj = (oop) this;
a61af66fc99e Initial load duke parents: diff changeset	500 if (!check_obj_alignment(obj)) return false;
a61af66fc99e Initial load duke parents: diff changeset	501 if (!Universe::heap()->is_in_reserved(obj)) return false;
a61af66fc99e Initial load duke parents: diff changeset	502 // obj is aligned and accessible in heap
a61af66fc99e Initial load duke parents: diff changeset	503 // try to find metaclass cycle safely without seg faulting on bad input
a61af66fc99e Initial load duke parents: diff changeset	504 // we should reach klassKlassObj by following klass link at most 3 times
a61af66fc99e Initial load duke parents: diff changeset	505 for (int i = 0; i < 3; i++) {
a61af66fc99e Initial load duke parents: diff changeset	506 obj = obj->klass();
a61af66fc99e Initial load duke parents: diff changeset	507 // klass should be aligned and in permspace
a61af66fc99e Initial load duke parents: diff changeset	508 if (!check_obj_alignment(obj)) return false;
a61af66fc99e Initial load duke parents: diff changeset	509 if (!Universe::heap()->is_in_permanent(obj)) return false;
a61af66fc99e Initial load duke parents: diff changeset	510 }
a61af66fc99e Initial load duke parents: diff changeset	511 if (obj != Universe::klassKlassObj()) {
a61af66fc99e Initial load duke parents: diff changeset	512 // During a dump, the _klassKlassObj moved to a shared space.
a61af66fc99e Initial load duke parents: diff changeset	513 if (DumpSharedSpaces && Universe::klassKlassObj()->is_shared()) {
a61af66fc99e Initial load duke parents: diff changeset	514 return true;
a61af66fc99e Initial load duke parents: diff changeset	515 }
a61af66fc99e Initial load duke parents: diff changeset	516 return false;
a61af66fc99e Initial load duke parents: diff changeset	517 }
a61af66fc99e Initial load duke parents: diff changeset	518
a61af66fc99e Initial load duke parents: diff changeset	519 // Header verification: the mark is typically non-NULL. If we're
a61af66fc99e Initial load duke parents: diff changeset	520 // at a safepoint, it must not be null.
a61af66fc99e Initial load duke parents: diff changeset	521 // Outside of a safepoint, the header could be changing (for example,
a61af66fc99e Initial load duke parents: diff changeset	522 // another thread could be inflating a lock on this object).
a61af66fc99e Initial load duke parents: diff changeset	523 if (ignore_mark_word) {
a61af66fc99e Initial load duke parents: diff changeset	524 return true;
a61af66fc99e Initial load duke parents: diff changeset	525 }
a61af66fc99e Initial load duke parents: diff changeset	526 if (mark() != NULL) {
a61af66fc99e Initial load duke parents: diff changeset	527 return true;
a61af66fc99e Initial load duke parents: diff changeset	528 }
a61af66fc99e Initial load duke parents: diff changeset	529 return !SafepointSynchronize::is_at_safepoint();
a61af66fc99e Initial load duke parents: diff changeset	530 }
a61af66fc99e Initial load duke parents: diff changeset	531
a61af66fc99e Initial load duke parents: diff changeset	532
a61af66fc99e Initial load duke parents: diff changeset	533 // used only for asserts
a61af66fc99e Initial load duke parents: diff changeset	534 inline bool oopDesc::is_oop_or_null(bool ignore_mark_word) const {
a61af66fc99e Initial load duke parents: diff changeset	535 return this == NULL ? true : is_oop(ignore_mark_word);
a61af66fc99e Initial load duke parents: diff changeset	536 }
a61af66fc99e Initial load duke parents: diff changeset	537
a61af66fc99e Initial load duke parents: diff changeset	538 #ifndef PRODUCT
a61af66fc99e Initial load duke parents: diff changeset	539 // used only for asserts
a61af66fc99e Initial load duke parents: diff changeset	540 inline bool oopDesc::is_unlocked_oop() const {
a61af66fc99e Initial load duke parents: diff changeset	541 if (!Universe::heap()->is_in_reserved(this)) return false;
a61af66fc99e Initial load duke parents: diff changeset	542 return mark()->is_unlocked();
a61af66fc99e Initial load duke parents: diff changeset	543 }
a61af66fc99e Initial load duke parents: diff changeset	544 #endif // PRODUCT
a61af66fc99e Initial load duke parents: diff changeset	545
a61af66fc99e Initial load duke parents: diff changeset	546 inline void oopDesc::follow_header() {
113 ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	547 if (UseCompressedOops) {
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	548 MarkSweep::mark_and_push(compressed_klass_addr());
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	549 } else {
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	550 MarkSweep::mark_and_push(klass_addr());
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	551 }
0 a61af66fc99e Initial load duke parents: diff changeset	552 }
a61af66fc99e Initial load duke parents: diff changeset	553
113 ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	554 inline void oopDesc::follow_contents(void) {
0 a61af66fc99e Initial load duke parents: diff changeset	555 assert (is_gc_marked(), "should be marked");
a61af66fc99e Initial load duke parents: diff changeset	556 blueprint()->oop_follow_contents(this);
a61af66fc99e Initial load duke parents: diff changeset	557 }
a61af66fc99e Initial load duke parents: diff changeset	558
a61af66fc99e Initial load duke parents: diff changeset	559
a61af66fc99e Initial load duke parents: diff changeset	560 // Used by scavengers
a61af66fc99e Initial load duke parents: diff changeset	561
a61af66fc99e Initial load duke parents: diff changeset	562 inline bool oopDesc::is_forwarded() const {
a61af66fc99e Initial load duke parents: diff changeset	563 // The extra heap check is needed since the obj might be locked, in which case the
a61af66fc99e Initial load duke parents: diff changeset	564 // mark would point to a stack location and have the sentinel bit cleared
a61af66fc99e Initial load duke parents: diff changeset	565 return mark()->is_marked();
a61af66fc99e Initial load duke parents: diff changeset	566 }
a61af66fc99e Initial load duke parents: diff changeset	567
a61af66fc99e Initial load duke parents: diff changeset	568 // Used by scavengers
a61af66fc99e Initial load duke parents: diff changeset	569 inline void oopDesc::forward_to(oop p) {
a61af66fc99e Initial load duke parents: diff changeset	570 assert(Universe::heap()->is_in_reserved(p),
a61af66fc99e Initial load duke parents: diff changeset	571 "forwarding to something not in heap");
a61af66fc99e Initial load duke parents: diff changeset	572 markOop m = markOopDesc::encode_pointer_as_mark(p);
a61af66fc99e Initial load duke parents: diff changeset	573 assert(m->decode_pointer() == p, "encoding must be reversable");
a61af66fc99e Initial load duke parents: diff changeset	574 set_mark(m);
a61af66fc99e Initial load duke parents: diff changeset	575 }
a61af66fc99e Initial load duke parents: diff changeset	576
a61af66fc99e Initial load duke parents: diff changeset	577 // Used by parallel scavengers
a61af66fc99e Initial load duke parents: diff changeset	578 inline bool oopDesc::cas_forward_to(oop p, markOop compare) {
a61af66fc99e Initial load duke parents: diff changeset	579 assert(Universe::heap()->is_in_reserved(p),
a61af66fc99e Initial load duke parents: diff changeset	580 "forwarding to something not in heap");
a61af66fc99e Initial load duke parents: diff changeset	581 markOop m = markOopDesc::encode_pointer_as_mark(p);
a61af66fc99e Initial load duke parents: diff changeset	582 assert(m->decode_pointer() == p, "encoding must be reversable");
a61af66fc99e Initial load duke parents: diff changeset	583 return cas_set_mark(m, compare) == compare;
a61af66fc99e Initial load duke parents: diff changeset	584 }
a61af66fc99e Initial load duke parents: diff changeset	585
a61af66fc99e Initial load duke parents: diff changeset	586 // Note that the forwardee is not the same thing as the displaced_mark.
a61af66fc99e Initial load duke parents: diff changeset	587 // The forwardee is used when copying during scavenge and mark-sweep.
a61af66fc99e Initial load duke parents: diff changeset	588 // It does need to clear the low two locking- and GC-related bits.
113 ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	589 inline oop oopDesc::forwardee() const {
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	590 return (oop) mark()->decode_pointer();
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	591 }
0 a61af66fc99e Initial load duke parents: diff changeset	592
a61af66fc99e Initial load duke parents: diff changeset	593 inline bool oopDesc::has_displaced_mark() const {
a61af66fc99e Initial load duke parents: diff changeset	594 return mark()->has_displaced_mark_helper();
a61af66fc99e Initial load duke parents: diff changeset	595 }
a61af66fc99e Initial load duke parents: diff changeset	596
a61af66fc99e Initial load duke parents: diff changeset	597 inline markOop oopDesc::displaced_mark() const {
a61af66fc99e Initial load duke parents: diff changeset	598 return mark()->displaced_mark_helper();
a61af66fc99e Initial load duke parents: diff changeset	599 }
a61af66fc99e Initial load duke parents: diff changeset	600
a61af66fc99e Initial load duke parents: diff changeset	601 inline void oopDesc::set_displaced_mark(markOop m) {
a61af66fc99e Initial load duke parents: diff changeset	602 mark()->set_displaced_mark_helper(m);
a61af66fc99e Initial load duke parents: diff changeset	603 }
a61af66fc99e Initial load duke parents: diff changeset	604
a61af66fc99e Initial load duke parents: diff changeset	605 // The following method needs to be MT safe.
a61af66fc99e Initial load duke parents: diff changeset	606 inline int oopDesc::age() const {
a61af66fc99e Initial load duke parents: diff changeset	607 assert(!is_forwarded(), "Attempt to read age from forwarded mark");
a61af66fc99e Initial load duke parents: diff changeset	608 if (has_displaced_mark()) {
a61af66fc99e Initial load duke parents: diff changeset	609 return displaced_mark()->age();
a61af66fc99e Initial load duke parents: diff changeset	610 } else {
a61af66fc99e Initial load duke parents: diff changeset	611 return mark()->age();
a61af66fc99e Initial load duke parents: diff changeset	612 }
a61af66fc99e Initial load duke parents: diff changeset	613 }
a61af66fc99e Initial load duke parents: diff changeset	614
a61af66fc99e Initial load duke parents: diff changeset	615 inline void oopDesc::incr_age() {
a61af66fc99e Initial load duke parents: diff changeset	616 assert(!is_forwarded(), "Attempt to increment age of forwarded mark");
a61af66fc99e Initial load duke parents: diff changeset	617 if (has_displaced_mark()) {
a61af66fc99e Initial load duke parents: diff changeset	618 set_displaced_mark(displaced_mark()->incr_age());
a61af66fc99e Initial load duke parents: diff changeset	619 } else {
a61af66fc99e Initial load duke parents: diff changeset	620 set_mark(mark()->incr_age());
a61af66fc99e Initial load duke parents: diff changeset	621 }
a61af66fc99e Initial load duke parents: diff changeset	622 }
a61af66fc99e Initial load duke parents: diff changeset	623
a61af66fc99e Initial load duke parents: diff changeset	624
a61af66fc99e Initial load duke parents: diff changeset	625 inline intptr_t oopDesc::identity_hash() {
a61af66fc99e Initial load duke parents: diff changeset	626 // Fast case; if the object is unlocked and the hash value is set, no locking is needed
a61af66fc99e Initial load duke parents: diff changeset	627 // Note: The mark must be read into local variable to avoid concurrent updates.
a61af66fc99e Initial load duke parents: diff changeset	628 markOop mrk = mark();
a61af66fc99e Initial load duke parents: diff changeset	629 if (mrk->is_unlocked() && !mrk->has_no_hash()) {
a61af66fc99e Initial load duke parents: diff changeset	630 return mrk->hash();
a61af66fc99e Initial load duke parents: diff changeset	631 } else if (mrk->is_marked()) {
a61af66fc99e Initial load duke parents: diff changeset	632 return mrk->hash();
a61af66fc99e Initial load duke parents: diff changeset	633 } else {
a61af66fc99e Initial load duke parents: diff changeset	634 return slow_identity_hash();
a61af66fc99e Initial load duke parents: diff changeset	635 }
a61af66fc99e Initial load duke parents: diff changeset	636 }
a61af66fc99e Initial load duke parents: diff changeset	637
a61af66fc99e Initial load duke parents: diff changeset	638 inline void oopDesc::oop_iterate_header(OopClosure* blk) {
113 ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	639 if (UseCompressedOops) {
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	640 blk->do_oop(compressed_klass_addr());
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	641 } else {
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	642 blk->do_oop(klass_addr());
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	643 }
0 a61af66fc99e Initial load duke parents: diff changeset	644 }
a61af66fc99e Initial load duke parents: diff changeset	645
a61af66fc99e Initial load duke parents: diff changeset	646 inline void oopDesc::oop_iterate_header(OopClosure* blk, MemRegion mr) {
113 ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	647 if (UseCompressedOops) {
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	648 if (mr.contains(compressed_klass_addr())) {
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	649 blk->do_oop(compressed_klass_addr());
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	650 }
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	651 } else {
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	652 if (mr.contains(klass_addr())) blk->do_oop(klass_addr());
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	653 }
0 a61af66fc99e Initial load duke parents: diff changeset	654 }
a61af66fc99e Initial load duke parents: diff changeset	655
a61af66fc99e Initial load duke parents: diff changeset	656 inline int oopDesc::adjust_pointers() {
a61af66fc99e Initial load duke parents: diff changeset	657 debug_only(int check_size = size());
a61af66fc99e Initial load duke parents: diff changeset	658 int s = blueprint()->oop_adjust_pointers(this);
a61af66fc99e Initial load duke parents: diff changeset	659 assert(s == check_size, "should be the same");
a61af66fc99e Initial load duke parents: diff changeset	660 return s;
a61af66fc99e Initial load duke parents: diff changeset	661 }
a61af66fc99e Initial load duke parents: diff changeset	662
a61af66fc99e Initial load duke parents: diff changeset	663 inline void oopDesc::adjust_header() {
113 ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	664 if (UseCompressedOops) {
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	665 MarkSweep::adjust_pointer(compressed_klass_addr());
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	666 } else {
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	667 MarkSweep::adjust_pointer(klass_addr());
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	668 }
0 a61af66fc99e Initial load duke parents: diff changeset	669 }
a61af66fc99e Initial load duke parents: diff changeset	670
a61af66fc99e Initial load duke parents: diff changeset	671 #define OOP_ITERATE_DEFN(OopClosureType, nv_suffix) \
a61af66fc99e Initial load duke parents: diff changeset	672 \
a61af66fc99e Initial load duke parents: diff changeset	673 inline int oopDesc::oop_iterate(OopClosureType* blk) { \
a61af66fc99e Initial load duke parents: diff changeset	674 SpecializationStats::record_call(); \
a61af66fc99e Initial load duke parents: diff changeset	675 return blueprint()->oop_oop_iterate##nv_suffix(this, blk); \
a61af66fc99e Initial load duke parents: diff changeset	676 } \
a61af66fc99e Initial load duke parents: diff changeset	677 \
a61af66fc99e Initial load duke parents: diff changeset	678 inline int oopDesc::oop_iterate(OopClosureType* blk, MemRegion mr) { \
a61af66fc99e Initial load duke parents: diff changeset	679 SpecializationStats::record_call(); \
a61af66fc99e Initial load duke parents: diff changeset	680 return blueprint()->oop_oop_iterate##nv_suffix##_m(this, blk, mr); \
a61af66fc99e Initial load duke parents: diff changeset	681 }
a61af66fc99e Initial load duke parents: diff changeset	682
a61af66fc99e Initial load duke parents: diff changeset	683 ALL_OOP_OOP_ITERATE_CLOSURES_1(OOP_ITERATE_DEFN)
a61af66fc99e Initial load duke parents: diff changeset	684 ALL_OOP_OOP_ITERATE_CLOSURES_3(OOP_ITERATE_DEFN)
a61af66fc99e Initial load duke parents: diff changeset	685
a61af66fc99e Initial load duke parents: diff changeset	686
a61af66fc99e Initial load duke parents: diff changeset	687 inline bool oopDesc::is_shared() const {
a61af66fc99e Initial load duke parents: diff changeset	688 return CompactingPermGenGen::is_shared(this);
a61af66fc99e Initial load duke parents: diff changeset	689 }
a61af66fc99e Initial load duke parents: diff changeset	690
a61af66fc99e Initial load duke parents: diff changeset	691 inline bool oopDesc::is_shared_readonly() const {
a61af66fc99e Initial load duke parents: diff changeset	692 return CompactingPermGenGen::is_shared_readonly(this);
a61af66fc99e Initial load duke parents: diff changeset	693 }
a61af66fc99e Initial load duke parents: diff changeset	694
a61af66fc99e Initial load duke parents: diff changeset	695 inline bool oopDesc::is_shared_readwrite() const {
a61af66fc99e Initial load duke parents: diff changeset	696 return CompactingPermGenGen::is_shared_readwrite(this);
a61af66fc99e Initial load duke parents: diff changeset	697 }

Mercurial > hg > truffle

annotate src/share/vm/oops/oop.inline.hpp @ 113:ba764ed4b6f2