truffle: src/share/vm/ci/ciInstanceKlass.cpp annotate

annotate src/share/vm/ci/ciInstanceKlass.cpp @ 2376:c7f3d0b4570f

7017732: move static fields into Class to prepare for perm gen removal Reviewed-by: kvn, coleenp, twisti, stefank

author	never
date	Fri, 18 Mar 2011 16:00:34 -0700
parents	4f26f535a225
children	0654ee04b214 e6b1331a51d2

rev	line source
0 a61af66fc99e Initial load duke parents: diff changeset	1 /*
2376 c7f3d0b4570f 7017732: move static fields into Class to prepare for perm gen removal never parents: 2244 diff changeset	2 * Copyright (c) 1999, 2011, 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: 1142 diff changeset	19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
c18cbe5936b8 6941466: Oracle rebranding changes for Hotspot repositories trims parents: 1142 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: 1142 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: 1924 diff changeset	25 #include "precompiled.hpp"
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1924 diff changeset	26 #include "ci/ciField.hpp"
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1924 diff changeset	27 #include "ci/ciInstance.hpp"
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1924 diff changeset	28 #include "ci/ciInstanceKlass.hpp"
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1924 diff changeset	29 #include "ci/ciUtilities.hpp"
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1924 diff changeset	30 #include "classfile/systemDictionary.hpp"
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1924 diff changeset	31 #include "memory/allocation.hpp"
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1924 diff changeset	32 #include "memory/allocation.inline.hpp"
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1924 diff changeset	33 #include "oops/oop.inline.hpp"
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1924 diff changeset	34 #include "runtime/fieldDescriptor.hpp"
0 a61af66fc99e Initial load duke parents: diff changeset	35
a61af66fc99e Initial load duke parents: diff changeset	36 // ciInstanceKlass
a61af66fc99e Initial load duke parents: diff changeset	37 //
a61af66fc99e Initial load duke parents: diff changeset	38 // This class represents a klassOop in the HotSpot virtual machine
a61af66fc99e Initial load duke parents: diff changeset	39 // whose Klass part in an instanceKlass.
a61af66fc99e Initial load duke parents: diff changeset	40
a61af66fc99e Initial load duke parents: diff changeset	41 // ------------------------------------------------------------------
a61af66fc99e Initial load duke parents: diff changeset	42 // ciInstanceKlass::ciInstanceKlass
a61af66fc99e Initial load duke parents: diff changeset	43 //
a61af66fc99e Initial load duke parents: diff changeset	44 // Loaded instance klass.
44 52fed2ec0afb 6667620: (Escape Analysis) fix deoptimization for scalar replaced objects kvn parents: 0 diff changeset	45 ciInstanceKlass::ciInstanceKlass(KlassHandle h_k) :
52fed2ec0afb 6667620: (Escape Analysis) fix deoptimization for scalar replaced objects kvn parents: 0 diff changeset	46 ciKlass(h_k), _non_static_fields(NULL)
52fed2ec0afb 6667620: (Escape Analysis) fix deoptimization for scalar replaced objects kvn parents: 0 diff changeset	47 {
0 a61af66fc99e Initial load duke parents: diff changeset	48 assert(get_Klass()->oop_is_instance(), "wrong type");
2244 4f26f535a225 6354181: nsk.logging.stress.threads.scmhml001 fails assertion in "src/share/vm/oops/instanceKlass.cpp, 111" never parents: 2177 diff changeset	49 assert(get_instanceKlass()->is_loaded(), "must be at least loaded");
0 a61af66fc99e Initial load duke parents: diff changeset	50 instanceKlass* ik = get_instanceKlass();
a61af66fc99e Initial load duke parents: diff changeset	51
a61af66fc99e Initial load duke parents: diff changeset	52 AccessFlags access_flags = ik->access_flags();
a61af66fc99e Initial load duke parents: diff changeset	53 _flags = ciFlags(access_flags);
a61af66fc99e Initial load duke parents: diff changeset	54 _has_finalizer = access_flags.has_finalizer();
a61af66fc99e Initial load duke parents: diff changeset	55 _has_subklass = ik->subklass() != NULL;
1645 3941674cc7fa 6958668: repeated uncommon trapping for new of klass which is being initialized never parents: 1604 diff changeset	56 _init_state = (instanceKlass::ClassState)ik->get_init_state();
0 a61af66fc99e Initial load duke parents: diff changeset	57 _nonstatic_field_size = ik->nonstatic_field_size();
113 ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 44 diff changeset	58 _has_nonstatic_fields = ik->has_nonstatic_fields();
0 a61af66fc99e Initial load duke parents: diff changeset	59 _nonstatic_fields = NULL; // initialized lazily by compute_nonstatic_fields:
a61af66fc99e Initial load duke parents: diff changeset	60
a61af66fc99e Initial load duke parents: diff changeset	61 _nof_implementors = ik->nof_implementors();
a61af66fc99e Initial load duke parents: diff changeset	62 for (int i = 0; i < implementors_limit; i++) {
a61af66fc99e Initial load duke parents: diff changeset	63 _implementors[i] = NULL; // we will fill these lazily
a61af66fc99e Initial load duke parents: diff changeset	64 }
a61af66fc99e Initial load duke parents: diff changeset	65
a61af66fc99e Initial load duke parents: diff changeset	66 Thread *thread = Thread::current();
a61af66fc99e Initial load duke parents: diff changeset	67 if (ciObjectFactory::is_initialized()) {
a61af66fc99e Initial load duke parents: diff changeset	68 _loader = JNIHandles::make_local(thread, ik->class_loader());
a61af66fc99e Initial load duke parents: diff changeset	69 _protection_domain = JNIHandles::make_local(thread,
a61af66fc99e Initial load duke parents: diff changeset	70 ik->protection_domain());
a61af66fc99e Initial load duke parents: diff changeset	71 _is_shared = false;
a61af66fc99e Initial load duke parents: diff changeset	72 } else {
a61af66fc99e Initial load duke parents: diff changeset	73 Handle h_loader(thread, ik->class_loader());
a61af66fc99e Initial load duke parents: diff changeset	74 Handle h_protection_domain(thread, ik->protection_domain());
a61af66fc99e Initial load duke parents: diff changeset	75 _loader = JNIHandles::make_global(h_loader);
a61af66fc99e Initial load duke parents: diff changeset	76 _protection_domain = JNIHandles::make_global(h_protection_domain);
a61af66fc99e Initial load duke parents: diff changeset	77 _is_shared = true;
a61af66fc99e Initial load duke parents: diff changeset	78 }
a61af66fc99e Initial load duke parents: diff changeset	79
a61af66fc99e Initial load duke parents: diff changeset	80 // Lazy fields get filled in only upon request.
a61af66fc99e Initial load duke parents: diff changeset	81 _super = NULL;
a61af66fc99e Initial load duke parents: diff changeset	82 _java_mirror = NULL;
a61af66fc99e Initial load duke parents: diff changeset	83
a61af66fc99e Initial load duke parents: diff changeset	84 if (is_shared()) {
1142 4ce7240d622c 6914300: ciEnv should export all well known classes never parents: 1138 diff changeset	85 if (h_k() != SystemDictionary::Object_klass()) {
0 a61af66fc99e Initial load duke parents: diff changeset	86 super();
a61af66fc99e Initial load duke parents: diff changeset	87 }
a61af66fc99e Initial load duke parents: diff changeset	88 //compute_nonstatic_fields(); // done outside of constructor
a61af66fc99e Initial load duke parents: diff changeset	89 }
a61af66fc99e Initial load duke parents: diff changeset	90
a61af66fc99e Initial load duke parents: diff changeset	91 _field_cache = NULL;
a61af66fc99e Initial load duke parents: diff changeset	92 }
a61af66fc99e Initial load duke parents: diff changeset	93
a61af66fc99e Initial load duke parents: diff changeset	94 // Version for unloaded classes:
a61af66fc99e Initial load duke parents: diff changeset	95 ciInstanceKlass::ciInstanceKlass(ciSymbol* name,
a61af66fc99e Initial load duke parents: diff changeset	96 jobject loader, jobject protection_domain)
a61af66fc99e Initial load duke parents: diff changeset	97 : ciKlass(name, ciInstanceKlassKlass::make())
a61af66fc99e Initial load duke parents: diff changeset	98 {
a61af66fc99e Initial load duke parents: diff changeset	99 assert(name->byte_at(0) != '[', "not an instance klass");
1645 3941674cc7fa 6958668: repeated uncommon trapping for new of klass which is being initialized never parents: 1604 diff changeset	100 _init_state = (instanceKlass::ClassState)0;
0 a61af66fc99e Initial load duke parents: diff changeset	101 _nonstatic_field_size = -1;
113 ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 44 diff changeset	102 _has_nonstatic_fields = false;
0 a61af66fc99e Initial load duke parents: diff changeset	103 _nonstatic_fields = NULL;
a61af66fc99e Initial load duke parents: diff changeset	104 _nof_implementors = -1;
a61af66fc99e Initial load duke parents: diff changeset	105 _loader = loader;
a61af66fc99e Initial load duke parents: diff changeset	106 _protection_domain = protection_domain;
a61af66fc99e Initial load duke parents: diff changeset	107 _is_shared = false;
a61af66fc99e Initial load duke parents: diff changeset	108 _super = NULL;
a61af66fc99e Initial load duke parents: diff changeset	109 _java_mirror = NULL;
a61af66fc99e Initial load duke parents: diff changeset	110 _field_cache = NULL;
a61af66fc99e Initial load duke parents: diff changeset	111 }
a61af66fc99e Initial load duke parents: diff changeset	112
a61af66fc99e Initial load duke parents: diff changeset	113
a61af66fc99e Initial load duke parents: diff changeset	114
a61af66fc99e Initial load duke parents: diff changeset	115 // ------------------------------------------------------------------
a61af66fc99e Initial load duke parents: diff changeset	116 // ciInstanceKlass::compute_shared_is_initialized
1645 3941674cc7fa 6958668: repeated uncommon trapping for new of klass which is being initialized never parents: 1604 diff changeset	117 void ciInstanceKlass::compute_shared_init_state() {
0 a61af66fc99e Initial load duke parents: diff changeset	118 GUARDED_VM_ENTRY(
a61af66fc99e Initial load duke parents: diff changeset	119 instanceKlass* ik = get_instanceKlass();
1645 3941674cc7fa 6958668: repeated uncommon trapping for new of klass which is being initialized never parents: 1604 diff changeset	120 _init_state = (instanceKlass::ClassState)ik->get_init_state();
0 a61af66fc99e Initial load duke parents: diff changeset	121 )
a61af66fc99e Initial load duke parents: diff changeset	122 }
a61af66fc99e Initial load duke parents: diff changeset	123
a61af66fc99e Initial load duke parents: diff changeset	124 // ------------------------------------------------------------------
a61af66fc99e Initial load duke parents: diff changeset	125 // ciInstanceKlass::compute_shared_has_subklass
a61af66fc99e Initial load duke parents: diff changeset	126 bool ciInstanceKlass::compute_shared_has_subklass() {
a61af66fc99e Initial load duke parents: diff changeset	127 GUARDED_VM_ENTRY(
a61af66fc99e Initial load duke parents: diff changeset	128 instanceKlass* ik = get_instanceKlass();
a61af66fc99e Initial load duke parents: diff changeset	129 _has_subklass = ik->subklass() != NULL;
a61af66fc99e Initial load duke parents: diff changeset	130 return _has_subklass;
a61af66fc99e Initial load duke parents: diff changeset	131 )
a61af66fc99e Initial load duke parents: diff changeset	132 }
a61af66fc99e Initial load duke parents: diff changeset	133
a61af66fc99e Initial load duke parents: diff changeset	134 // ------------------------------------------------------------------
a61af66fc99e Initial load duke parents: diff changeset	135 // ciInstanceKlass::compute_shared_nof_implementors
a61af66fc99e Initial load duke parents: diff changeset	136 int ciInstanceKlass::compute_shared_nof_implementors() {
a61af66fc99e Initial load duke parents: diff changeset	137 // We requery this property, since it is a very old ciObject.
a61af66fc99e Initial load duke parents: diff changeset	138 GUARDED_VM_ENTRY(
a61af66fc99e Initial load duke parents: diff changeset	139 instanceKlass* ik = get_instanceKlass();
a61af66fc99e Initial load duke parents: diff changeset	140 _nof_implementors = ik->nof_implementors();
a61af66fc99e Initial load duke parents: diff changeset	141 return _nof_implementors;
a61af66fc99e Initial load duke parents: diff changeset	142 )
a61af66fc99e Initial load duke parents: diff changeset	143 }
a61af66fc99e Initial load duke parents: diff changeset	144
a61af66fc99e Initial load duke parents: diff changeset	145 // ------------------------------------------------------------------
a61af66fc99e Initial load duke parents: diff changeset	146 // ciInstanceKlass::loader
a61af66fc99e Initial load duke parents: diff changeset	147 oop ciInstanceKlass::loader() {
a61af66fc99e Initial load duke parents: diff changeset	148 ASSERT_IN_VM;
a61af66fc99e Initial load duke parents: diff changeset	149 return JNIHandles::resolve(_loader);
a61af66fc99e Initial load duke parents: diff changeset	150 }
a61af66fc99e Initial load duke parents: diff changeset	151
a61af66fc99e Initial load duke parents: diff changeset	152 // ------------------------------------------------------------------
a61af66fc99e Initial load duke parents: diff changeset	153 // ciInstanceKlass::loader_handle
a61af66fc99e Initial load duke parents: diff changeset	154 jobject ciInstanceKlass::loader_handle() {
a61af66fc99e Initial load duke parents: diff changeset	155 return _loader;
a61af66fc99e Initial load duke parents: diff changeset	156 }
a61af66fc99e Initial load duke parents: diff changeset	157
a61af66fc99e Initial load duke parents: diff changeset	158 // ------------------------------------------------------------------
a61af66fc99e Initial load duke parents: diff changeset	159 // ciInstanceKlass::protection_domain
a61af66fc99e Initial load duke parents: diff changeset	160 oop ciInstanceKlass::protection_domain() {
a61af66fc99e Initial load duke parents: diff changeset	161 ASSERT_IN_VM;
a61af66fc99e Initial load duke parents: diff changeset	162 return JNIHandles::resolve(_protection_domain);
a61af66fc99e Initial load duke parents: diff changeset	163 }
a61af66fc99e Initial load duke parents: diff changeset	164
a61af66fc99e Initial load duke parents: diff changeset	165 // ------------------------------------------------------------------
a61af66fc99e Initial load duke parents: diff changeset	166 // ciInstanceKlass::protection_domain_handle
a61af66fc99e Initial load duke parents: diff changeset	167 jobject ciInstanceKlass::protection_domain_handle() {
a61af66fc99e Initial load duke parents: diff changeset	168 return _protection_domain;
a61af66fc99e Initial load duke parents: diff changeset	169 }
a61af66fc99e Initial load duke parents: diff changeset	170
a61af66fc99e Initial load duke parents: diff changeset	171 // ------------------------------------------------------------------
a61af66fc99e Initial load duke parents: diff changeset	172 // ciInstanceKlass::field_cache
a61af66fc99e Initial load duke parents: diff changeset	173 //
a61af66fc99e Initial load duke parents: diff changeset	174 // Get the field cache associated with this klass.
a61af66fc99e Initial load duke parents: diff changeset	175 ciConstantPoolCache* ciInstanceKlass::field_cache() {
a61af66fc99e Initial load duke parents: diff changeset	176 if (is_shared()) {
a61af66fc99e Initial load duke parents: diff changeset	177 return NULL;
a61af66fc99e Initial load duke parents: diff changeset	178 }
a61af66fc99e Initial load duke parents: diff changeset	179 if (_field_cache == NULL) {
a61af66fc99e Initial load duke parents: diff changeset	180 assert(!is_java_lang_Object(), "Object has no fields");
a61af66fc99e Initial load duke parents: diff changeset	181 Arena* arena = CURRENT_ENV->arena();
a61af66fc99e Initial load duke parents: diff changeset	182 _field_cache = new (arena) ciConstantPoolCache(arena, 5);
a61af66fc99e Initial load duke parents: diff changeset	183 }
a61af66fc99e Initial load duke parents: diff changeset	184 return _field_cache;
a61af66fc99e Initial load duke parents: diff changeset	185 }
a61af66fc99e Initial load duke parents: diff changeset	186
a61af66fc99e Initial load duke parents: diff changeset	187 // ------------------------------------------------------------------
a61af66fc99e Initial load duke parents: diff changeset	188 // ciInstanceKlass::get_canonical_holder
a61af66fc99e Initial load duke parents: diff changeset	189 //
a61af66fc99e Initial load duke parents: diff changeset	190 ciInstanceKlass* ciInstanceKlass::get_canonical_holder(int offset) {
a61af66fc99e Initial load duke parents: diff changeset	191 #ifdef ASSERT
a61af66fc99e Initial load duke parents: diff changeset	192 if (!(offset >= 0 && offset < layout_helper())) {
a61af66fc99e Initial load duke parents: diff changeset	193 tty->print("*** get_canonical_holder(%d) on ", offset);
a61af66fc99e Initial load duke parents: diff changeset	194 this->print();
a61af66fc99e Initial load duke parents: diff changeset	195 tty->print_cr(" ***");
a61af66fc99e Initial load duke parents: diff changeset	196 };
a61af66fc99e Initial load duke parents: diff changeset	197 assert(offset >= 0 && offset < layout_helper(), "offset must be tame");
a61af66fc99e Initial load duke parents: diff changeset	198 #endif
a61af66fc99e Initial load duke parents: diff changeset	199
113 ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 44 diff changeset	200 if (offset < instanceOopDesc::base_offset_in_bytes()) {
0 a61af66fc99e Initial load duke parents: diff changeset	201 // All header offsets belong properly to java/lang/Object.
a61af66fc99e Initial load duke parents: diff changeset	202 return CURRENT_ENV->Object_klass();
a61af66fc99e Initial load duke parents: diff changeset	203 }
a61af66fc99e Initial load duke parents: diff changeset	204
a61af66fc99e Initial load duke parents: diff changeset	205 ciInstanceKlass* self = this;
a61af66fc99e Initial load duke parents: diff changeset	206 for (;;) {
a61af66fc99e Initial load duke parents: diff changeset	207 assert(self->is_loaded(), "must be loaded to have size");
a61af66fc99e Initial load duke parents: diff changeset	208 ciInstanceKlass* super = self->super();
113 ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 44 diff changeset	209 if (super == NULL \|\| super->nof_nonstatic_fields() == 0 \|\|
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 44 diff changeset	210 !super->contains_field_offset(offset)) {
0 a61af66fc99e Initial load duke parents: diff changeset	211 return self;
a61af66fc99e Initial load duke parents: diff changeset	212 } else {
a61af66fc99e Initial load duke parents: diff changeset	213 self = super; // return super->get_canonical_holder(offset)
a61af66fc99e Initial load duke parents: diff changeset	214 }
a61af66fc99e Initial load duke parents: diff changeset	215 }
a61af66fc99e Initial load duke parents: diff changeset	216 }
a61af66fc99e Initial load duke parents: diff changeset	217
a61af66fc99e Initial load duke parents: diff changeset	218 // ------------------------------------------------------------------
a61af66fc99e Initial load duke parents: diff changeset	219 // ciInstanceKlass::is_java_lang_Object
a61af66fc99e Initial load duke parents: diff changeset	220 //
a61af66fc99e Initial load duke parents: diff changeset	221 // Is this klass java.lang.Object?
a61af66fc99e Initial load duke parents: diff changeset	222 bool ciInstanceKlass::is_java_lang_Object() {
a61af66fc99e Initial load duke parents: diff changeset	223 return equals(CURRENT_ENV->Object_klass());
a61af66fc99e Initial load duke parents: diff changeset	224 }
a61af66fc99e Initial load duke parents: diff changeset	225
a61af66fc99e Initial load duke parents: diff changeset	226 // ------------------------------------------------------------------
a61af66fc99e Initial load duke parents: diff changeset	227 // ciInstanceKlass::uses_default_loader
a61af66fc99e Initial load duke parents: diff changeset	228 bool ciInstanceKlass::uses_default_loader() {
1138 dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 1080 diff changeset	229 // Note: We do not need to resolve the handle or enter the VM
dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 1080 diff changeset	230 // in order to test null-ness.
dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 1080 diff changeset	231 return _loader == NULL;
dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 1080 diff changeset	232 }
dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 1080 diff changeset	233
dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 1080 diff changeset	234 // ------------------------------------------------------------------
dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 1080 diff changeset	235 // ciInstanceKlass::is_in_package
dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 1080 diff changeset	236 //
dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 1080 diff changeset	237 // Is this klass in the given package?
dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 1080 diff changeset	238 bool ciInstanceKlass::is_in_package(const char* packagename, int len) {
dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 1080 diff changeset	239 // To avoid class loader mischief, this test always rejects application classes.
dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 1080 diff changeset	240 if (!uses_default_loader())
dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 1080 diff changeset	241 return false;
dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 1080 diff changeset	242 GUARDED_VM_ENTRY(
dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 1080 diff changeset	243 return is_in_package_impl(packagename, len);
dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 1080 diff changeset	244 )
dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 1080 diff changeset	245 }
dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 1080 diff changeset	246
dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 1080 diff changeset	247 bool ciInstanceKlass::is_in_package_impl(const char* packagename, int len) {
dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 1080 diff changeset	248 ASSERT_IN_VM;
dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 1080 diff changeset	249
dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 1080 diff changeset	250 // If packagename contains trailing '/' exclude it from the
dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 1080 diff changeset	251 // prefix-test since we test for it explicitly.
dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 1080 diff changeset	252 if (packagename[len - 1] == '/')
dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 1080 diff changeset	253 len--;
dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 1080 diff changeset	254
dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 1080 diff changeset	255 if (!name()->starts_with(packagename, len))
dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 1080 diff changeset	256 return false;
dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 1080 diff changeset	257
dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 1080 diff changeset	258 // Test if the class name is something like "java/lang".
dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 1080 diff changeset	259 if ((len + 1) > name()->utf8_length())
dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 1080 diff changeset	260 return false;
dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 1080 diff changeset	261
dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 1080 diff changeset	262 // Test for trailing '/'
dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 1080 diff changeset	263 if ((char) name()->byte_at(len) != '/')
dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 1080 diff changeset	264 return false;
dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 1080 diff changeset	265
dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 1080 diff changeset	266 // Make sure it's not actually in a subpackage:
dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 1080 diff changeset	267 if (name()->index_of_at(len+1, "/", 1) >= 0)
dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 1080 diff changeset	268 return false;
dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 1080 diff changeset	269
dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 1080 diff changeset	270 return true;
0 a61af66fc99e Initial load duke parents: diff changeset	271 }
a61af66fc99e Initial load duke parents: diff changeset	272
a61af66fc99e Initial load duke parents: diff changeset	273 // ------------------------------------------------------------------
a61af66fc99e Initial load duke parents: diff changeset	274 // ciInstanceKlass::print_impl
a61af66fc99e Initial load duke parents: diff changeset	275 //
a61af66fc99e Initial load duke parents: diff changeset	276 // Implementation of the print method.
a61af66fc99e Initial load duke parents: diff changeset	277 void ciInstanceKlass::print_impl(outputStream* st) {
a61af66fc99e Initial load duke parents: diff changeset	278 ciKlass::print_impl(st);
a61af66fc99e Initial load duke parents: diff changeset	279 GUARDED_VM_ENTRY(st->print(" loader=0x%x", (address)loader());)
a61af66fc99e Initial load duke parents: diff changeset	280 if (is_loaded()) {
a61af66fc99e Initial load duke parents: diff changeset	281 st->print(" loaded=true initialized=%s finalized=%s subklass=%s size=%d flags=",
a61af66fc99e Initial load duke parents: diff changeset	282 bool_to_str(is_initialized()),
a61af66fc99e Initial load duke parents: diff changeset	283 bool_to_str(has_finalizer()),
a61af66fc99e Initial load duke parents: diff changeset	284 bool_to_str(has_subklass()),
a61af66fc99e Initial load duke parents: diff changeset	285 layout_helper());
a61af66fc99e Initial load duke parents: diff changeset	286
a61af66fc99e Initial load duke parents: diff changeset	287 _flags.print_klass_flags();
a61af66fc99e Initial load duke parents: diff changeset	288
a61af66fc99e Initial load duke parents: diff changeset	289 if (_super) {
a61af66fc99e Initial load duke parents: diff changeset	290 st->print(" super=");
a61af66fc99e Initial load duke parents: diff changeset	291 _super->print_name();
a61af66fc99e Initial load duke parents: diff changeset	292 }
a61af66fc99e Initial load duke parents: diff changeset	293 if (_java_mirror) {
a61af66fc99e Initial load duke parents: diff changeset	294 st->print(" mirror=PRESENT");
a61af66fc99e Initial load duke parents: diff changeset	295 }
a61af66fc99e Initial load duke parents: diff changeset	296 } else {
a61af66fc99e Initial load duke parents: diff changeset	297 st->print(" loaded=false");
a61af66fc99e Initial load duke parents: diff changeset	298 }
a61af66fc99e Initial load duke parents: diff changeset	299 }
a61af66fc99e Initial load duke parents: diff changeset	300
a61af66fc99e Initial load duke parents: diff changeset	301 // ------------------------------------------------------------------
a61af66fc99e Initial load duke parents: diff changeset	302 // ciInstanceKlass::super
a61af66fc99e Initial load duke parents: diff changeset	303 //
a61af66fc99e Initial load duke parents: diff changeset	304 // Get the superklass of this klass.
a61af66fc99e Initial load duke parents: diff changeset	305 ciInstanceKlass* ciInstanceKlass::super() {
a61af66fc99e Initial load duke parents: diff changeset	306 assert(is_loaded(), "must be loaded");
a61af66fc99e Initial load duke parents: diff changeset	307 if (_super == NULL && !is_java_lang_Object()) {
a61af66fc99e Initial load duke parents: diff changeset	308 GUARDED_VM_ENTRY(
a61af66fc99e Initial load duke parents: diff changeset	309 klassOop super_klass = get_instanceKlass()->super();
a61af66fc99e Initial load duke parents: diff changeset	310 _super = CURRENT_ENV->get_object(super_klass)->as_instance_klass();
a61af66fc99e Initial load duke parents: diff changeset	311 )
a61af66fc99e Initial load duke parents: diff changeset	312 }
a61af66fc99e Initial load duke parents: diff changeset	313 return _super;
a61af66fc99e Initial load duke parents: diff changeset	314 }
a61af66fc99e Initial load duke parents: diff changeset	315
a61af66fc99e Initial load duke parents: diff changeset	316 // ------------------------------------------------------------------
a61af66fc99e Initial load duke parents: diff changeset	317 // ciInstanceKlass::java_mirror
a61af66fc99e Initial load duke parents: diff changeset	318 //
a61af66fc99e Initial load duke parents: diff changeset	319 // Get the instance of java.lang.Class corresponding to this klass.
1604 b918d354830a 6960865: ldc of unloaded class throws an assert in ciTypeFlow jrose parents: 1602 diff changeset	320 // Cache it on this->_java_mirror.
0 a61af66fc99e Initial load duke parents: diff changeset	321 ciInstance* ciInstanceKlass::java_mirror() {
2376 c7f3d0b4570f 7017732: move static fields into Class to prepare for perm gen removal never parents: 2244 diff changeset	322 if (is_shared()) {
c7f3d0b4570f 7017732: move static fields into Class to prepare for perm gen removal never parents: 2244 diff changeset	323 return ciKlass::java_mirror();
c7f3d0b4570f 7017732: move static fields into Class to prepare for perm gen removal never parents: 2244 diff changeset	324 }
0 a61af66fc99e Initial load duke parents: diff changeset	325 if (_java_mirror == NULL) {
1604 b918d354830a 6960865: ldc of unloaded class throws an assert in ciTypeFlow jrose parents: 1602 diff changeset	326 _java_mirror = ciKlass::java_mirror();
0 a61af66fc99e Initial load duke parents: diff changeset	327 }
a61af66fc99e Initial load duke parents: diff changeset	328 return _java_mirror;
a61af66fc99e Initial load duke parents: diff changeset	329 }
a61af66fc99e Initial load duke parents: diff changeset	330
a61af66fc99e Initial load duke parents: diff changeset	331 // ------------------------------------------------------------------
a61af66fc99e Initial load duke parents: diff changeset	332 // ciInstanceKlass::unique_concrete_subklass
a61af66fc99e Initial load duke parents: diff changeset	333 ciInstanceKlass* ciInstanceKlass::unique_concrete_subklass() {
a61af66fc99e Initial load duke parents: diff changeset	334 if (!is_loaded()) return NULL; // No change if class is not loaded
a61af66fc99e Initial load duke parents: diff changeset	335 if (!is_abstract()) return NULL; // Only applies to abstract classes.
a61af66fc99e Initial load duke parents: diff changeset	336 if (!has_subklass()) return NULL; // Must have at least one subklass.
a61af66fc99e Initial load duke parents: diff changeset	337 VM_ENTRY_MARK;
a61af66fc99e Initial load duke parents: diff changeset	338 instanceKlass* ik = get_instanceKlass();
a61af66fc99e Initial load duke parents: diff changeset	339 Klass* up = ik->up_cast_abstract();
a61af66fc99e Initial load duke parents: diff changeset	340 assert(up->oop_is_instance(), "must be instanceKlass");
a61af66fc99e Initial load duke parents: diff changeset	341 if (ik == up) {
a61af66fc99e Initial load duke parents: diff changeset	342 return NULL;
a61af66fc99e Initial load duke parents: diff changeset	343 }
a61af66fc99e Initial load duke parents: diff changeset	344 return CURRENT_THREAD_ENV->get_object(up->as_klassOop())->as_instance_klass();
a61af66fc99e Initial load duke parents: diff changeset	345 }
a61af66fc99e Initial load duke parents: diff changeset	346
a61af66fc99e Initial load duke parents: diff changeset	347 // ------------------------------------------------------------------
a61af66fc99e Initial load duke parents: diff changeset	348 // ciInstanceKlass::has_finalizable_subclass
a61af66fc99e Initial load duke parents: diff changeset	349 bool ciInstanceKlass::has_finalizable_subclass() {
a61af66fc99e Initial load duke parents: diff changeset	350 if (!is_loaded()) return true;
a61af66fc99e Initial load duke parents: diff changeset	351 VM_ENTRY_MARK;
a61af66fc99e Initial load duke parents: diff changeset	352 return Dependencies::find_finalizable_subclass(get_instanceKlass()) != NULL;
a61af66fc99e Initial load duke parents: diff changeset	353 }
a61af66fc99e Initial load duke parents: diff changeset	354
a61af66fc99e Initial load duke parents: diff changeset	355 // ------------------------------------------------------------------
a61af66fc99e Initial load duke parents: diff changeset	356 // ciInstanceKlass::get_field_by_offset
a61af66fc99e Initial load duke parents: diff changeset	357 ciField* ciInstanceKlass::get_field_by_offset(int field_offset, bool is_static) {
a61af66fc99e Initial load duke parents: diff changeset	358 if (!is_static) {
a61af66fc99e Initial load duke parents: diff changeset	359 for (int i = 0, len = nof_nonstatic_fields(); i < len; i++) {
a61af66fc99e Initial load duke parents: diff changeset	360 ciField* field = _nonstatic_fields->at(i);
a61af66fc99e Initial load duke parents: diff changeset	361 int field_off = field->offset_in_bytes();
a61af66fc99e Initial load duke parents: diff changeset	362 if (field_off == field_offset)
a61af66fc99e Initial load duke parents: diff changeset	363 return field;
a61af66fc99e Initial load duke parents: diff changeset	364 if (field_off > field_offset)
a61af66fc99e Initial load duke parents: diff changeset	365 break;
a61af66fc99e Initial load duke parents: diff changeset	366 // could do binary search or check bins, but probably not worth it
a61af66fc99e Initial load duke parents: diff changeset	367 }
a61af66fc99e Initial load duke parents: diff changeset	368 return NULL;
a61af66fc99e Initial load duke parents: diff changeset	369 }
a61af66fc99e Initial load duke parents: diff changeset	370 VM_ENTRY_MARK;
a61af66fc99e Initial load duke parents: diff changeset	371 instanceKlass* k = get_instanceKlass();
a61af66fc99e Initial load duke parents: diff changeset	372 fieldDescriptor fd;
a61af66fc99e Initial load duke parents: diff changeset	373 if (!k->find_field_from_offset(field_offset, is_static, &fd)) {
a61af66fc99e Initial load duke parents: diff changeset	374 return NULL;
a61af66fc99e Initial load duke parents: diff changeset	375 }
a61af66fc99e Initial load duke parents: diff changeset	376 ciField* field = new (CURRENT_THREAD_ENV->arena()) ciField(&fd);
a61af66fc99e Initial load duke parents: diff changeset	377 return field;
a61af66fc99e Initial load duke parents: diff changeset	378 }
a61af66fc99e Initial load duke parents: diff changeset	379
44 52fed2ec0afb 6667620: (Escape Analysis) fix deoptimization for scalar replaced objects kvn parents: 0 diff changeset	380 // ------------------------------------------------------------------
1080 7c57aead6d3e 6892658: C2 should optimize some stringbuilder patterns never parents: 196 diff changeset	381 // ciInstanceKlass::get_field_by_name
7c57aead6d3e 6892658: C2 should optimize some stringbuilder patterns never parents: 196 diff changeset	382 ciField* ciInstanceKlass::get_field_by_name(ciSymbol* name, ciSymbol* signature, bool is_static) {
7c57aead6d3e 6892658: C2 should optimize some stringbuilder patterns never parents: 196 diff changeset	383 VM_ENTRY_MARK;
7c57aead6d3e 6892658: C2 should optimize some stringbuilder patterns never parents: 196 diff changeset	384 instanceKlass* k = get_instanceKlass();
7c57aead6d3e 6892658: C2 should optimize some stringbuilder patterns never parents: 196 diff changeset	385 fieldDescriptor fd;
2177 3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	386 klassOop def = k->find_field(name->get_symbol(), signature->get_symbol(), is_static, &fd);
1080 7c57aead6d3e 6892658: C2 should optimize some stringbuilder patterns never parents: 196 diff changeset	387 if (def == NULL) {
7c57aead6d3e 6892658: C2 should optimize some stringbuilder patterns never parents: 196 diff changeset	388 return NULL;
7c57aead6d3e 6892658: C2 should optimize some stringbuilder patterns never parents: 196 diff changeset	389 }
7c57aead6d3e 6892658: C2 should optimize some stringbuilder patterns never parents: 196 diff changeset	390 ciField* field = new (CURRENT_THREAD_ENV->arena()) ciField(&fd);
7c57aead6d3e 6892658: C2 should optimize some stringbuilder patterns never parents: 196 diff changeset	391 return field;
7c57aead6d3e 6892658: C2 should optimize some stringbuilder patterns never parents: 196 diff changeset	392 }
7c57aead6d3e 6892658: C2 should optimize some stringbuilder patterns never parents: 196 diff changeset	393
7c57aead6d3e 6892658: C2 should optimize some stringbuilder patterns never parents: 196 diff changeset	394 // ------------------------------------------------------------------
44 52fed2ec0afb 6667620: (Escape Analysis) fix deoptimization for scalar replaced objects kvn parents: 0 diff changeset	395 // ciInstanceKlass::non_static_fields.
52fed2ec0afb 6667620: (Escape Analysis) fix deoptimization for scalar replaced objects kvn parents: 0 diff changeset	396
52fed2ec0afb 6667620: (Escape Analysis) fix deoptimization for scalar replaced objects kvn parents: 0 diff changeset	397 class NonStaticFieldFiller: public FieldClosure {
52fed2ec0afb 6667620: (Escape Analysis) fix deoptimization for scalar replaced objects kvn parents: 0 diff changeset	398 GrowableArray<ciField> _arr;
52fed2ec0afb 6667620: (Escape Analysis) fix deoptimization for scalar replaced objects kvn parents: 0 diff changeset	399 ciEnv* _curEnv;
52fed2ec0afb 6667620: (Escape Analysis) fix deoptimization for scalar replaced objects kvn parents: 0 diff changeset	400 public:
52fed2ec0afb 6667620: (Escape Analysis) fix deoptimization for scalar replaced objects kvn parents: 0 diff changeset	401 NonStaticFieldFiller(ciEnv* curEnv, GrowableArray<ciField> arr) :
52fed2ec0afb 6667620: (Escape Analysis) fix deoptimization for scalar replaced objects kvn parents: 0 diff changeset	402 _curEnv(curEnv), _arr(arr)
52fed2ec0afb 6667620: (Escape Analysis) fix deoptimization for scalar replaced objects kvn parents: 0 diff changeset	403 {}
52fed2ec0afb 6667620: (Escape Analysis) fix deoptimization for scalar replaced objects kvn parents: 0 diff changeset	404 void do_field(fieldDescriptor* fd) {
52fed2ec0afb 6667620: (Escape Analysis) fix deoptimization for scalar replaced objects kvn parents: 0 diff changeset	405 ciField* field = new (_curEnv->arena()) ciField(fd);
52fed2ec0afb 6667620: (Escape Analysis) fix deoptimization for scalar replaced objects kvn parents: 0 diff changeset	406 _arr->append(field);
52fed2ec0afb 6667620: (Escape Analysis) fix deoptimization for scalar replaced objects kvn parents: 0 diff changeset	407 }
52fed2ec0afb 6667620: (Escape Analysis) fix deoptimization for scalar replaced objects kvn parents: 0 diff changeset	408 };
52fed2ec0afb 6667620: (Escape Analysis) fix deoptimization for scalar replaced objects kvn parents: 0 diff changeset	409
52fed2ec0afb 6667620: (Escape Analysis) fix deoptimization for scalar replaced objects kvn parents: 0 diff changeset	410 GrowableArray<ciField> ciInstanceKlass::non_static_fields() {
52fed2ec0afb 6667620: (Escape Analysis) fix deoptimization for scalar replaced objects kvn parents: 0 diff changeset	411 if (_non_static_fields == NULL) {
52fed2ec0afb 6667620: (Escape Analysis) fix deoptimization for scalar replaced objects kvn parents: 0 diff changeset	412 VM_ENTRY_MARK;
52fed2ec0afb 6667620: (Escape Analysis) fix deoptimization for scalar replaced objects kvn parents: 0 diff changeset	413 ciEnv* curEnv = ciEnv::current();
52fed2ec0afb 6667620: (Escape Analysis) fix deoptimization for scalar replaced objects kvn parents: 0 diff changeset	414 instanceKlass* ik = get_instanceKlass();
52fed2ec0afb 6667620: (Escape Analysis) fix deoptimization for scalar replaced objects kvn parents: 0 diff changeset	415 int max_n_fields = ik->fields()->length()/instanceKlass::next_offset;
52fed2ec0afb 6667620: (Escape Analysis) fix deoptimization for scalar replaced objects kvn parents: 0 diff changeset	416
1685 0e35fa8ebccd 6973963: SEGV in ciBlock::start_bci() with EA kvn parents: 1645 diff changeset	417 Arena* arena = curEnv->arena();
44 52fed2ec0afb 6667620: (Escape Analysis) fix deoptimization for scalar replaced objects kvn parents: 0 diff changeset	418 _non_static_fields =
1685 0e35fa8ebccd 6973963: SEGV in ciBlock::start_bci() with EA kvn parents: 1645 diff changeset	419 new (arena) GrowableArray<ciField*>(arena, max_n_fields, 0, NULL);
44 52fed2ec0afb 6667620: (Escape Analysis) fix deoptimization for scalar replaced objects kvn parents: 0 diff changeset	420 NonStaticFieldFiller filler(curEnv, _non_static_fields);
52fed2ec0afb 6667620: (Escape Analysis) fix deoptimization for scalar replaced objects kvn parents: 0 diff changeset	421 ik->do_nonstatic_fields(&filler);
52fed2ec0afb 6667620: (Escape Analysis) fix deoptimization for scalar replaced objects kvn parents: 0 diff changeset	422 }
52fed2ec0afb 6667620: (Escape Analysis) fix deoptimization for scalar replaced objects kvn parents: 0 diff changeset	423 return _non_static_fields;
52fed2ec0afb 6667620: (Escape Analysis) fix deoptimization for scalar replaced objects kvn parents: 0 diff changeset	424 }
52fed2ec0afb 6667620: (Escape Analysis) fix deoptimization for scalar replaced objects kvn parents: 0 diff changeset	425
0 a61af66fc99e Initial load duke parents: diff changeset	426 static int sort_field_by_offset(ciField a, ciField b) {
a61af66fc99e Initial load duke parents: diff changeset	427 return (a)->offset_in_bytes() - (b)->offset_in_bytes();
a61af66fc99e Initial load duke parents: diff changeset	428 // (no worries about 32-bit overflow...)
a61af66fc99e Initial load duke parents: diff changeset	429 }
a61af66fc99e Initial load duke parents: diff changeset	430
a61af66fc99e Initial load duke parents: diff changeset	431 // ------------------------------------------------------------------
a61af66fc99e Initial load duke parents: diff changeset	432 // ciInstanceKlass::compute_nonstatic_fields
a61af66fc99e Initial load duke parents: diff changeset	433 int ciInstanceKlass::compute_nonstatic_fields() {
a61af66fc99e Initial load duke parents: diff changeset	434 assert(is_loaded(), "must be loaded");
a61af66fc99e Initial load duke parents: diff changeset	435
a61af66fc99e Initial load duke parents: diff changeset	436 if (_nonstatic_fields != NULL)
a61af66fc99e Initial load duke parents: diff changeset	437 return _nonstatic_fields->length();
a61af66fc99e Initial load duke parents: diff changeset	438
113 ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 44 diff changeset	439 if (!has_nonstatic_fields()) {
0 a61af66fc99e Initial load duke parents: diff changeset	440 Arena* arena = CURRENT_ENV->arena();
a61af66fc99e Initial load duke parents: diff changeset	441 _nonstatic_fields = new (arena) GrowableArray<ciField*>(arena, 0, 0, NULL);
a61af66fc99e Initial load duke parents: diff changeset	442 return 0;
a61af66fc99e Initial load duke parents: diff changeset	443 }
a61af66fc99e Initial load duke parents: diff changeset	444 assert(!is_java_lang_Object(), "bootstrap OK");
a61af66fc99e Initial load duke parents: diff changeset	445
113 ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 44 diff changeset	446 // Size in bytes of my fields, including inherited fields.
165 437d03ea40b1 6703888: Compressed Oops: use the 32-bits gap after klass in a object kvn parents: 113 diff changeset	447 int fsize = nonstatic_field_size() * heapOopSize;
113 ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 44 diff changeset	448
0 a61af66fc99e Initial load duke parents: diff changeset	449 ciInstanceKlass* super = this->super();
a61af66fc99e Initial load duke parents: diff changeset	450 GrowableArray<ciField> super_fields = NULL;
113 ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 44 diff changeset	451 if (super != NULL && super->has_nonstatic_fields()) {
165 437d03ea40b1 6703888: Compressed Oops: use the 32-bits gap after klass in a object kvn parents: 113 diff changeset	452 int super_fsize = super->nonstatic_field_size() * heapOopSize;
113 ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 44 diff changeset	453 int super_flen = super->nof_nonstatic_fields();
0 a61af66fc99e Initial load duke parents: diff changeset	454 super_fields = super->_nonstatic_fields;
a61af66fc99e Initial load duke parents: diff changeset	455 assert(super_flen == 0 \|\| super_fields != NULL, "first get nof_fields");
113 ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 44 diff changeset	456 // See if I am no larger than my super; if so, I can use his fields.
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 44 diff changeset	457 if (fsize == super_fsize) {
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 44 diff changeset	458 _nonstatic_fields = super_fields;
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 44 diff changeset	459 return super_fields->length();
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 44 diff changeset	460 }
0 a61af66fc99e Initial load duke parents: diff changeset	461 }
a61af66fc99e Initial load duke parents: diff changeset	462
a61af66fc99e Initial load duke parents: diff changeset	463 GrowableArray<ciField> fields = NULL;
a61af66fc99e Initial load duke parents: diff changeset	464 GUARDED_VM_ENTRY({
a61af66fc99e Initial load duke parents: diff changeset	465 fields = compute_nonstatic_fields_impl(super_fields);
a61af66fc99e Initial load duke parents: diff changeset	466 });
a61af66fc99e Initial load duke parents: diff changeset	467
a61af66fc99e Initial load duke parents: diff changeset	468 if (fields == NULL) {
a61af66fc99e Initial load duke parents: diff changeset	469 // This can happen if this class (java.lang.Class) has invisible fields.
a61af66fc99e Initial load duke parents: diff changeset	470 _nonstatic_fields = super_fields;
a61af66fc99e Initial load duke parents: diff changeset	471 return super_fields->length();
a61af66fc99e Initial load duke parents: diff changeset	472 }
a61af66fc99e Initial load duke parents: diff changeset	473
a61af66fc99e Initial load duke parents: diff changeset	474 int flen = fields->length();
a61af66fc99e Initial load duke parents: diff changeset	475
a61af66fc99e Initial load duke parents: diff changeset	476 // Now sort them by offset, ascending.
a61af66fc99e Initial load duke parents: diff changeset	477 // (In principle, they could mix with superclass fields.)
a61af66fc99e Initial load duke parents: diff changeset	478 fields->sort(sort_field_by_offset);
a61af66fc99e Initial load duke parents: diff changeset	479 #ifdef ASSERT
113 ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 44 diff changeset	480 int last_offset = instanceOopDesc::base_offset_in_bytes();
0 a61af66fc99e Initial load duke parents: diff changeset	481 for (int i = 0; i < fields->length(); i++) {
a61af66fc99e Initial load duke parents: diff changeset	482 ciField* field = fields->at(i);
a61af66fc99e Initial load duke parents: diff changeset	483 int offset = field->offset_in_bytes();
113 ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 44 diff changeset	484 int size = (field->_type == NULL) ? heapOopSize : field->size_in_bytes();
1846 d55217dc206f 6829194: JSR 292 needs to support compressed oops twisti parents: 1685 diff changeset	485 assert(last_offset <= offset, err_msg("no field overlap: %d <= %d", last_offset, offset));
0 a61af66fc99e Initial load duke parents: diff changeset	486 if (last_offset > (int)sizeof(oopDesc))
a61af66fc99e Initial load duke parents: diff changeset	487 assert((offset - last_offset) < BytesPerLong, "no big holes");
a61af66fc99e Initial load duke parents: diff changeset	488 // Note: Two consecutive T_BYTE fields will be separated by wordSize-1
a61af66fc99e Initial load duke parents: diff changeset	489 // padding bytes if one of them is declared by a superclass.
a61af66fc99e Initial load duke parents: diff changeset	490 // This is a minor inefficiency classFileParser.cpp.
a61af66fc99e Initial load duke parents: diff changeset	491 last_offset = offset + size;
a61af66fc99e Initial load duke parents: diff changeset	492 }
165 437d03ea40b1 6703888: Compressed Oops: use the 32-bits gap after klass in a object kvn parents: 113 diff changeset	493 assert(last_offset <= (int)instanceOopDesc::base_offset_in_bytes() + fsize, "no overflow");
0 a61af66fc99e Initial load duke parents: diff changeset	494 #endif
a61af66fc99e Initial load duke parents: diff changeset	495
a61af66fc99e Initial load duke parents: diff changeset	496 _nonstatic_fields = fields;
a61af66fc99e Initial load duke parents: diff changeset	497 return flen;
a61af66fc99e Initial load duke parents: diff changeset	498 }
a61af66fc99e Initial load duke parents: diff changeset	499
a61af66fc99e Initial load duke parents: diff changeset	500 GrowableArray<ciField>
a61af66fc99e Initial load duke parents: diff changeset	501 ciInstanceKlass::compute_nonstatic_fields_impl(GrowableArray<ciField>
a61af66fc99e Initial load duke parents: diff changeset	502 super_fields) {
a61af66fc99e Initial load duke parents: diff changeset	503 ASSERT_IN_VM;
a61af66fc99e Initial load duke parents: diff changeset	504 Arena* arena = CURRENT_ENV->arena();
a61af66fc99e Initial load duke parents: diff changeset	505 int flen = 0;
a61af66fc99e Initial load duke parents: diff changeset	506 GrowableArray<ciField> fields = NULL;
a61af66fc99e Initial load duke parents: diff changeset	507 instanceKlass* k = get_instanceKlass();
a61af66fc99e Initial load duke parents: diff changeset	508 typeArrayOop fields_array = k->fields();
a61af66fc99e Initial load duke parents: diff changeset	509 for (int pass = 0; pass <= 1; pass++) {
a61af66fc99e Initial load duke parents: diff changeset	510 for (int i = 0, alen = fields_array->length(); i < alen; i += instanceKlass::next_offset) {
a61af66fc99e Initial load duke parents: diff changeset	511 fieldDescriptor fd;
a61af66fc99e Initial load duke parents: diff changeset	512 fd.initialize(k->as_klassOop(), i);
a61af66fc99e Initial load duke parents: diff changeset	513 if (fd.is_static()) continue;
a61af66fc99e Initial load duke parents: diff changeset	514 if (pass == 0) {
a61af66fc99e Initial load duke parents: diff changeset	515 flen += 1;
a61af66fc99e Initial load duke parents: diff changeset	516 } else {
a61af66fc99e Initial load duke parents: diff changeset	517 ciField* field = new (arena) ciField(&fd);
a61af66fc99e Initial load duke parents: diff changeset	518 fields->append(field);
a61af66fc99e Initial load duke parents: diff changeset	519 }
a61af66fc99e Initial load duke parents: diff changeset	520 }
a61af66fc99e Initial load duke parents: diff changeset	521
a61af66fc99e Initial load duke parents: diff changeset	522 // Between passes, allocate the array:
a61af66fc99e Initial load duke parents: diff changeset	523 if (pass == 0) {
a61af66fc99e Initial load duke parents: diff changeset	524 if (flen == 0) {
a61af66fc99e Initial load duke parents: diff changeset	525 return NULL; // return nothing if none are locally declared
a61af66fc99e Initial load duke parents: diff changeset	526 }
a61af66fc99e Initial load duke parents: diff changeset	527 if (super_fields != NULL) {
a61af66fc99e Initial load duke parents: diff changeset	528 flen += super_fields->length();
a61af66fc99e Initial load duke parents: diff changeset	529 }
a61af66fc99e Initial load duke parents: diff changeset	530 fields = new (arena) GrowableArray<ciField*>(arena, flen, 0, NULL);
a61af66fc99e Initial load duke parents: diff changeset	531 if (super_fields != NULL) {
a61af66fc99e Initial load duke parents: diff changeset	532 fields->appendAll(super_fields);
a61af66fc99e Initial load duke parents: diff changeset	533 }
a61af66fc99e Initial load duke parents: diff changeset	534 }
a61af66fc99e Initial load duke parents: diff changeset	535 }
a61af66fc99e Initial load duke parents: diff changeset	536 assert(fields->length() == flen, "sanity");
a61af66fc99e Initial load duke parents: diff changeset	537 return fields;
a61af66fc99e Initial load duke parents: diff changeset	538 }
a61af66fc99e Initial load duke parents: diff changeset	539
a61af66fc99e Initial load duke parents: diff changeset	540 // ------------------------------------------------------------------
a61af66fc99e Initial load duke parents: diff changeset	541 // ciInstanceKlass::find_method
a61af66fc99e Initial load duke parents: diff changeset	542 //
a61af66fc99e Initial load duke parents: diff changeset	543 // Find a method in this klass.
a61af66fc99e Initial load duke parents: diff changeset	544 ciMethod* ciInstanceKlass::find_method(ciSymbol* name, ciSymbol* signature) {
a61af66fc99e Initial load duke parents: diff changeset	545 VM_ENTRY_MARK;
a61af66fc99e Initial load duke parents: diff changeset	546 instanceKlass* k = get_instanceKlass();
2177 3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	547 Symbol* name_sym = name->get_symbol();
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	548 Symbol* sig_sym= signature->get_symbol();
0 a61af66fc99e Initial load duke parents: diff changeset	549
a61af66fc99e Initial load duke parents: diff changeset	550 methodOop m = k->find_method(name_sym, sig_sym);
a61af66fc99e Initial load duke parents: diff changeset	551 if (m == NULL) return NULL;
a61af66fc99e Initial load duke parents: diff changeset	552
a61af66fc99e Initial load duke parents: diff changeset	553 return CURRENT_THREAD_ENV->get_object(m)->as_method();
a61af66fc99e Initial load duke parents: diff changeset	554 }
a61af66fc99e Initial load duke parents: diff changeset	555
a61af66fc99e Initial load duke parents: diff changeset	556 // ------------------------------------------------------------------
a61af66fc99e Initial load duke parents: diff changeset	557 // ciInstanceKlass::is_leaf_type
a61af66fc99e Initial load duke parents: diff changeset	558 bool ciInstanceKlass::is_leaf_type() {
a61af66fc99e Initial load duke parents: diff changeset	559 assert(is_loaded(), "must be loaded");
a61af66fc99e Initial load duke parents: diff changeset	560 if (is_shared()) {
a61af66fc99e Initial load duke parents: diff changeset	561 return is_final(); // approximately correct
a61af66fc99e Initial load duke parents: diff changeset	562 } else {
a61af66fc99e Initial load duke parents: diff changeset	563 return !_has_subklass && (_nof_implementors == 0);
a61af66fc99e Initial load duke parents: diff changeset	564 }
a61af66fc99e Initial load duke parents: diff changeset	565 }
a61af66fc99e Initial load duke parents: diff changeset	566
a61af66fc99e Initial load duke parents: diff changeset	567 // ------------------------------------------------------------------
a61af66fc99e Initial load duke parents: diff changeset	568 // ciInstanceKlass::implementor
a61af66fc99e Initial load duke parents: diff changeset	569 //
a61af66fc99e Initial load duke parents: diff changeset	570 // Report an implementor of this interface.
a61af66fc99e Initial load duke parents: diff changeset	571 // Returns NULL if exact information is not available.
a61af66fc99e Initial load duke parents: diff changeset	572 // Note that there are various races here, since my copy
a61af66fc99e Initial load duke parents: diff changeset	573 // of _nof_implementors might be out of date with respect
a61af66fc99e Initial load duke parents: diff changeset	574 // to results returned by instanceKlass::implementor.
a61af66fc99e Initial load duke parents: diff changeset	575 // This is OK, since any dependencies we decide to assert
a61af66fc99e Initial load duke parents: diff changeset	576 // will be checked later under the Compile_lock.
a61af66fc99e Initial load duke parents: diff changeset	577 ciInstanceKlass* ciInstanceKlass::implementor(int n) {
1924 b0e6879e48fa 6839891: Array overrun in vm ci kvn parents: 1846 diff changeset	578 if (n >= implementors_limit) {
0 a61af66fc99e Initial load duke parents: diff changeset	579 return NULL;
a61af66fc99e Initial load duke parents: diff changeset	580 }
a61af66fc99e Initial load duke parents: diff changeset	581 ciInstanceKlass* impl = _implementors[n];
a61af66fc99e Initial load duke parents: diff changeset	582 if (impl == NULL) {
a61af66fc99e Initial load duke parents: diff changeset	583 if (_nof_implementors > implementors_limit) {
a61af66fc99e Initial load duke parents: diff changeset	584 return NULL;
a61af66fc99e Initial load duke parents: diff changeset	585 }
a61af66fc99e Initial load duke parents: diff changeset	586 // Go into the VM to fetch the implementor.
a61af66fc99e Initial load duke parents: diff changeset	587 {
a61af66fc99e Initial load duke parents: diff changeset	588 VM_ENTRY_MARK;
a61af66fc99e Initial load duke parents: diff changeset	589 klassOop k = get_instanceKlass()->implementor(n);
a61af66fc99e Initial load duke parents: diff changeset	590 if (k != NULL) {
a61af66fc99e Initial load duke parents: diff changeset	591 impl = CURRENT_THREAD_ENV->get_object(k)->as_instance_klass();
a61af66fc99e Initial load duke parents: diff changeset	592 }
a61af66fc99e Initial load duke parents: diff changeset	593 }
a61af66fc99e Initial load duke parents: diff changeset	594 // Memoize this result.
a61af66fc99e Initial load duke parents: diff changeset	595 if (!is_shared()) {
a61af66fc99e Initial load duke parents: diff changeset	596 _implementors[n] = (impl == NULL)? this: impl;
a61af66fc99e Initial load duke parents: diff changeset	597 }
a61af66fc99e Initial load duke parents: diff changeset	598 } else if (impl == this) {
a61af66fc99e Initial load duke parents: diff changeset	599 impl = NULL; // memoized null result from a VM query
a61af66fc99e Initial load duke parents: diff changeset	600 }
a61af66fc99e Initial load duke parents: diff changeset	601 return impl;
a61af66fc99e Initial load duke parents: diff changeset	602 }

Mercurial > hg > truffle

annotate src/share/vm/ci/ciInstanceKlass.cpp @ 2376:c7f3d0b4570f