Mercurial > hg > truffle
annotate src/share/vm/ci/ciInstanceKlass.cpp @ 12264:b2e698d2276c
8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation
Summary: Enhance method resolution and resulting data structures, plus some refactoring.
Reviewed-by: twisti, acorn, jrose
author | drchase |
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date | Fri, 13 Sep 2013 22:38:02 -0400 |
parents | 6f3fd5150b67 |
children | cefad50507d8 5cc2d82aa82a |
rev | line source |
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0 | 1 /* |
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2 * Copyright (c) 1999, 2013, Oracle and/or its affiliates. All rights reserved. |
0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
4 * | |
5 * This code is free software; you can redistribute it and/or modify it | |
6 * under the terms of the GNU General Public License version 2 only, as | |
7 * published by the Free Software Foundation. | |
8 * | |
9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
12 * version 2 for more details (a copy is included in the LICENSE file that | |
13 * accompanied this code). | |
14 * | |
15 * You should have received a copy of the GNU General Public License version | |
16 * 2 along with this work; if not, write to the Free Software Foundation, | |
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
18 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
1972 | 25 #include "precompiled.hpp" |
26 #include "ci/ciField.hpp" | |
27 #include "ci/ciInstance.hpp" | |
28 #include "ci/ciInstanceKlass.hpp" | |
29 #include "ci/ciUtilities.hpp" | |
30 #include "classfile/systemDictionary.hpp" | |
31 #include "memory/allocation.hpp" | |
32 #include "memory/allocation.inline.hpp" | |
33 #include "oops/oop.inline.hpp" | |
3938 | 34 #include "oops/fieldStreams.hpp" |
1972 | 35 #include "runtime/fieldDescriptor.hpp" |
0 | 36 |
37 // ciInstanceKlass | |
38 // | |
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39 // This class represents a Klass* in the HotSpot virtual machine |
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40 // whose Klass part in an InstanceKlass. |
0 | 41 |
42 // ------------------------------------------------------------------ | |
43 // ciInstanceKlass::ciInstanceKlass | |
44 // | |
45 // Loaded instance klass. | |
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46 ciInstanceKlass::ciInstanceKlass(KlassHandle h_k) : |
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47 ciKlass(h_k), _non_static_fields(NULL) |
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48 { |
0 | 49 assert(get_Klass()->oop_is_instance(), "wrong type"); |
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50 assert(get_instanceKlass()->is_loaded(), "must be at least loaded"); |
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51 InstanceKlass* ik = get_instanceKlass(); |
0 | 52 |
53 AccessFlags access_flags = ik->access_flags(); | |
54 _flags = ciFlags(access_flags); | |
55 _has_finalizer = access_flags.has_finalizer(); | |
56 _has_subklass = ik->subklass() != NULL; | |
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57 _init_state = ik->init_state(); |
0 | 58 _nonstatic_field_size = ik->nonstatic_field_size(); |
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59 _has_nonstatic_fields = ik->has_nonstatic_fields(); |
0 | 60 _nonstatic_fields = NULL; // initialized lazily by compute_nonstatic_fields: |
61 | |
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62 _implementor = NULL; // we will fill these lazily |
0 | 63 |
64 Thread *thread = Thread::current(); | |
65 if (ciObjectFactory::is_initialized()) { | |
66 _loader = JNIHandles::make_local(thread, ik->class_loader()); | |
67 _protection_domain = JNIHandles::make_local(thread, | |
68 ik->protection_domain()); | |
69 _is_shared = false; | |
70 } else { | |
71 Handle h_loader(thread, ik->class_loader()); | |
72 Handle h_protection_domain(thread, ik->protection_domain()); | |
73 _loader = JNIHandles::make_global(h_loader); | |
74 _protection_domain = JNIHandles::make_global(h_protection_domain); | |
75 _is_shared = true; | |
76 } | |
77 | |
78 // Lazy fields get filled in only upon request. | |
79 _super = NULL; | |
80 _java_mirror = NULL; | |
81 | |
82 if (is_shared()) { | |
1142 | 83 if (h_k() != SystemDictionary::Object_klass()) { |
0 | 84 super(); |
85 } | |
86 //compute_nonstatic_fields(); // done outside of constructor | |
87 } | |
88 | |
89 _field_cache = NULL; | |
90 } | |
91 | |
92 // Version for unloaded classes: | |
93 ciInstanceKlass::ciInstanceKlass(ciSymbol* name, | |
94 jobject loader, jobject protection_domain) | |
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95 : ciKlass(name, T_OBJECT) |
0 | 96 { |
97 assert(name->byte_at(0) != '[', "not an instance klass"); | |
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98 _init_state = (InstanceKlass::ClassState)0; |
0 | 99 _nonstatic_field_size = -1; |
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100 _has_nonstatic_fields = false; |
0 | 101 _nonstatic_fields = NULL; |
102 _loader = loader; | |
103 _protection_domain = protection_domain; | |
104 _is_shared = false; | |
105 _super = NULL; | |
106 _java_mirror = NULL; | |
107 _field_cache = NULL; | |
108 } | |
109 | |
110 | |
111 | |
112 // ------------------------------------------------------------------ | |
113 // ciInstanceKlass::compute_shared_is_initialized | |
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114 void ciInstanceKlass::compute_shared_init_state() { |
0 | 115 GUARDED_VM_ENTRY( |
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116 InstanceKlass* ik = get_instanceKlass(); |
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117 _init_state = ik->init_state(); |
0 | 118 ) |
119 } | |
120 | |
121 // ------------------------------------------------------------------ | |
122 // ciInstanceKlass::compute_shared_has_subklass | |
123 bool ciInstanceKlass::compute_shared_has_subklass() { | |
124 GUARDED_VM_ENTRY( | |
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125 InstanceKlass* ik = get_instanceKlass(); |
0 | 126 _has_subklass = ik->subklass() != NULL; |
127 return _has_subklass; | |
128 ) | |
129 } | |
130 | |
131 // ------------------------------------------------------------------ | |
132 // ciInstanceKlass::loader | |
133 oop ciInstanceKlass::loader() { | |
134 ASSERT_IN_VM; | |
135 return JNIHandles::resolve(_loader); | |
136 } | |
137 | |
138 // ------------------------------------------------------------------ | |
139 // ciInstanceKlass::loader_handle | |
140 jobject ciInstanceKlass::loader_handle() { | |
141 return _loader; | |
142 } | |
143 | |
144 // ------------------------------------------------------------------ | |
145 // ciInstanceKlass::protection_domain | |
146 oop ciInstanceKlass::protection_domain() { | |
147 ASSERT_IN_VM; | |
148 return JNIHandles::resolve(_protection_domain); | |
149 } | |
150 | |
151 // ------------------------------------------------------------------ | |
152 // ciInstanceKlass::protection_domain_handle | |
153 jobject ciInstanceKlass::protection_domain_handle() { | |
154 return _protection_domain; | |
155 } | |
156 | |
157 // ------------------------------------------------------------------ | |
158 // ciInstanceKlass::field_cache | |
159 // | |
160 // Get the field cache associated with this klass. | |
161 ciConstantPoolCache* ciInstanceKlass::field_cache() { | |
162 if (is_shared()) { | |
163 return NULL; | |
164 } | |
165 if (_field_cache == NULL) { | |
166 assert(!is_java_lang_Object(), "Object has no fields"); | |
167 Arena* arena = CURRENT_ENV->arena(); | |
168 _field_cache = new (arena) ciConstantPoolCache(arena, 5); | |
169 } | |
170 return _field_cache; | |
171 } | |
172 | |
173 // ------------------------------------------------------------------ | |
174 // ciInstanceKlass::get_canonical_holder | |
175 // | |
176 ciInstanceKlass* ciInstanceKlass::get_canonical_holder(int offset) { | |
177 #ifdef ASSERT | |
178 if (!(offset >= 0 && offset < layout_helper())) { | |
179 tty->print("*** get_canonical_holder(%d) on ", offset); | |
180 this->print(); | |
181 tty->print_cr(" ***"); | |
182 }; | |
183 assert(offset >= 0 && offset < layout_helper(), "offset must be tame"); | |
184 #endif | |
185 | |
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186 if (offset < instanceOopDesc::base_offset_in_bytes()) { |
0 | 187 // All header offsets belong properly to java/lang/Object. |
188 return CURRENT_ENV->Object_klass(); | |
189 } | |
190 | |
191 ciInstanceKlass* self = this; | |
192 for (;;) { | |
193 assert(self->is_loaded(), "must be loaded to have size"); | |
194 ciInstanceKlass* super = self->super(); | |
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195 if (super == NULL || super->nof_nonstatic_fields() == 0 || |
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196 !super->contains_field_offset(offset)) { |
0 | 197 return self; |
198 } else { | |
199 self = super; // return super->get_canonical_holder(offset) | |
200 } | |
201 } | |
202 } | |
203 | |
204 // ------------------------------------------------------------------ | |
205 // ciInstanceKlass::is_java_lang_Object | |
206 // | |
207 // Is this klass java.lang.Object? | |
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208 bool ciInstanceKlass::is_java_lang_Object() const { |
0 | 209 return equals(CURRENT_ENV->Object_klass()); |
210 } | |
211 | |
212 // ------------------------------------------------------------------ | |
213 // ciInstanceKlass::uses_default_loader | |
10278 | 214 bool ciInstanceKlass::uses_default_loader() const { |
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215 // Note: We do not need to resolve the handle or enter the VM |
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216 // in order to test null-ness. |
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217 return _loader == NULL; |
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218 } |
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219 |
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220 // ------------------------------------------------------------------ |
10278 | 221 |
222 /** | |
223 * Return basic type of boxed value for box klass or T_OBJECT if not. | |
224 */ | |
225 BasicType ciInstanceKlass::box_klass_type() const { | |
226 if (uses_default_loader() && is_loaded()) { | |
227 return SystemDictionary::box_klass_type(get_Klass()); | |
228 } else { | |
229 return T_OBJECT; | |
230 } | |
231 } | |
232 | |
233 /** | |
234 * Is this boxing klass? | |
235 */ | |
236 bool ciInstanceKlass::is_box_klass() const { | |
237 return is_java_primitive(box_klass_type()); | |
238 } | |
239 | |
240 /** | |
241 * Is this boxed value offset? | |
242 */ | |
243 bool ciInstanceKlass::is_boxed_value_offset(int offset) const { | |
244 BasicType bt = box_klass_type(); | |
245 return is_java_primitive(bt) && | |
246 (offset == java_lang_boxing_object::value_offset_in_bytes(bt)); | |
247 } | |
248 | |
249 // ------------------------------------------------------------------ | |
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250 // ciInstanceKlass::is_in_package |
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251 // |
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252 // Is this klass in the given package? |
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253 bool ciInstanceKlass::is_in_package(const char* packagename, int len) { |
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254 // To avoid class loader mischief, this test always rejects application classes. |
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255 if (!uses_default_loader()) |
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256 return false; |
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257 GUARDED_VM_ENTRY( |
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258 return is_in_package_impl(packagename, len); |
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259 ) |
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260 } |
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261 |
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262 bool ciInstanceKlass::is_in_package_impl(const char* packagename, int len) { |
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263 ASSERT_IN_VM; |
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264 |
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265 // If packagename contains trailing '/' exclude it from the |
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266 // prefix-test since we test for it explicitly. |
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267 if (packagename[len - 1] == '/') |
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268 len--; |
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269 |
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270 if (!name()->starts_with(packagename, len)) |
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271 return false; |
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272 |
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273 // Test if the class name is something like "java/lang". |
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274 if ((len + 1) > name()->utf8_length()) |
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275 return false; |
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276 |
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277 // Test for trailing '/' |
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278 if ((char) name()->byte_at(len) != '/') |
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279 return false; |
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280 |
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281 // Make sure it's not actually in a subpackage: |
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282 if (name()->index_of_at(len+1, "/", 1) >= 0) |
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283 return false; |
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284 |
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285 return true; |
0 | 286 } |
287 | |
288 // ------------------------------------------------------------------ | |
289 // ciInstanceKlass::print_impl | |
290 // | |
291 // Implementation of the print method. | |
292 void ciInstanceKlass::print_impl(outputStream* st) { | |
293 ciKlass::print_impl(st); | |
294 GUARDED_VM_ENTRY(st->print(" loader=0x%x", (address)loader());) | |
295 if (is_loaded()) { | |
296 st->print(" loaded=true initialized=%s finalized=%s subklass=%s size=%d flags=", | |
297 bool_to_str(is_initialized()), | |
298 bool_to_str(has_finalizer()), | |
299 bool_to_str(has_subklass()), | |
300 layout_helper()); | |
301 | |
302 _flags.print_klass_flags(); | |
303 | |
304 if (_super) { | |
305 st->print(" super="); | |
306 _super->print_name(); | |
307 } | |
308 if (_java_mirror) { | |
309 st->print(" mirror=PRESENT"); | |
310 } | |
311 } else { | |
312 st->print(" loaded=false"); | |
313 } | |
314 } | |
315 | |
316 // ------------------------------------------------------------------ | |
317 // ciInstanceKlass::super | |
318 // | |
319 // Get the superklass of this klass. | |
320 ciInstanceKlass* ciInstanceKlass::super() { | |
321 assert(is_loaded(), "must be loaded"); | |
322 if (_super == NULL && !is_java_lang_Object()) { | |
323 GUARDED_VM_ENTRY( | |
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324 Klass* super_klass = get_instanceKlass()->super(); |
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325 _super = CURRENT_ENV->get_instance_klass(super_klass); |
0 | 326 ) |
327 } | |
328 return _super; | |
329 } | |
330 | |
331 // ------------------------------------------------------------------ | |
332 // ciInstanceKlass::java_mirror | |
333 // | |
334 // Get the instance of java.lang.Class corresponding to this klass. | |
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335 // Cache it on this->_java_mirror. |
0 | 336 ciInstance* ciInstanceKlass::java_mirror() { |
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337 if (is_shared()) { |
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338 return ciKlass::java_mirror(); |
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339 } |
0 | 340 if (_java_mirror == NULL) { |
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341 _java_mirror = ciKlass::java_mirror(); |
0 | 342 } |
343 return _java_mirror; | |
344 } | |
345 | |
346 // ------------------------------------------------------------------ | |
347 // ciInstanceKlass::unique_concrete_subklass | |
348 ciInstanceKlass* ciInstanceKlass::unique_concrete_subklass() { | |
349 if (!is_loaded()) return NULL; // No change if class is not loaded | |
350 if (!is_abstract()) return NULL; // Only applies to abstract classes. | |
351 if (!has_subklass()) return NULL; // Must have at least one subklass. | |
352 VM_ENTRY_MARK; | |
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353 InstanceKlass* ik = get_instanceKlass(); |
0 | 354 Klass* up = ik->up_cast_abstract(); |
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355 assert(up->oop_is_instance(), "must be InstanceKlass"); |
0 | 356 if (ik == up) { |
357 return NULL; | |
358 } | |
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359 return CURRENT_THREAD_ENV->get_instance_klass(up); |
0 | 360 } |
361 | |
362 // ------------------------------------------------------------------ | |
363 // ciInstanceKlass::has_finalizable_subclass | |
364 bool ciInstanceKlass::has_finalizable_subclass() { | |
365 if (!is_loaded()) return true; | |
366 VM_ENTRY_MARK; | |
367 return Dependencies::find_finalizable_subclass(get_instanceKlass()) != NULL; | |
368 } | |
369 | |
370 // ------------------------------------------------------------------ | |
371 // ciInstanceKlass::get_field_by_offset | |
372 ciField* ciInstanceKlass::get_field_by_offset(int field_offset, bool is_static) { | |
373 if (!is_static) { | |
374 for (int i = 0, len = nof_nonstatic_fields(); i < len; i++) { | |
375 ciField* field = _nonstatic_fields->at(i); | |
376 int field_off = field->offset_in_bytes(); | |
377 if (field_off == field_offset) | |
378 return field; | |
379 if (field_off > field_offset) | |
380 break; | |
381 // could do binary search or check bins, but probably not worth it | |
382 } | |
383 return NULL; | |
384 } | |
385 VM_ENTRY_MARK; | |
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386 InstanceKlass* k = get_instanceKlass(); |
0 | 387 fieldDescriptor fd; |
388 if (!k->find_field_from_offset(field_offset, is_static, &fd)) { | |
389 return NULL; | |
390 } | |
391 ciField* field = new (CURRENT_THREAD_ENV->arena()) ciField(&fd); | |
392 return field; | |
393 } | |
394 | |
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395 // ------------------------------------------------------------------ |
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396 // ciInstanceKlass::get_field_by_name |
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397 ciField* ciInstanceKlass::get_field_by_name(ciSymbol* name, ciSymbol* signature, bool is_static) { |
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398 VM_ENTRY_MARK; |
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399 InstanceKlass* k = get_instanceKlass(); |
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400 fieldDescriptor fd; |
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401 Klass* def = k->find_field(name->get_symbol(), signature->get_symbol(), is_static, &fd); |
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402 if (def == NULL) { |
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403 return NULL; |
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404 } |
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405 ciField* field = new (CURRENT_THREAD_ENV->arena()) ciField(&fd); |
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406 return field; |
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407 } |
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408 |
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409 // ------------------------------------------------------------------ |
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410 // ciInstanceKlass::non_static_fields. |
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411 |
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412 class NonStaticFieldFiller: public FieldClosure { |
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413 GrowableArray<ciField*>* _arr; |
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414 ciEnv* _curEnv; |
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415 public: |
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416 NonStaticFieldFiller(ciEnv* curEnv, GrowableArray<ciField*>* arr) : |
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417 _curEnv(curEnv), _arr(arr) |
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418 {} |
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419 void do_field(fieldDescriptor* fd) { |
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420 ciField* field = new (_curEnv->arena()) ciField(fd); |
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421 _arr->append(field); |
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422 } |
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423 }; |
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424 |
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425 GrowableArray<ciField*>* ciInstanceKlass::non_static_fields() { |
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426 if (_non_static_fields == NULL) { |
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427 VM_ENTRY_MARK; |
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428 ciEnv* curEnv = ciEnv::current(); |
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429 InstanceKlass* ik = get_instanceKlass(); |
3938 | 430 int max_n_fields = ik->java_fields_count(); |
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431 |
1685 | 432 Arena* arena = curEnv->arena(); |
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433 _non_static_fields = |
1685 | 434 new (arena) GrowableArray<ciField*>(arena, max_n_fields, 0, NULL); |
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435 NonStaticFieldFiller filler(curEnv, _non_static_fields); |
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436 ik->do_nonstatic_fields(&filler); |
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437 } |
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438 return _non_static_fields; |
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439 } |
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440 |
0 | 441 static int sort_field_by_offset(ciField** a, ciField** b) { |
442 return (*a)->offset_in_bytes() - (*b)->offset_in_bytes(); | |
443 // (no worries about 32-bit overflow...) | |
444 } | |
445 | |
446 // ------------------------------------------------------------------ | |
447 // ciInstanceKlass::compute_nonstatic_fields | |
448 int ciInstanceKlass::compute_nonstatic_fields() { | |
449 assert(is_loaded(), "must be loaded"); | |
450 | |
451 if (_nonstatic_fields != NULL) | |
452 return _nonstatic_fields->length(); | |
453 | |
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454 if (!has_nonstatic_fields()) { |
0 | 455 Arena* arena = CURRENT_ENV->arena(); |
456 _nonstatic_fields = new (arena) GrowableArray<ciField*>(arena, 0, 0, NULL); | |
457 return 0; | |
458 } | |
459 assert(!is_java_lang_Object(), "bootstrap OK"); | |
460 | |
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461 // Size in bytes of my fields, including inherited fields. |
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462 int fsize = nonstatic_field_size() * heapOopSize; |
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463 |
0 | 464 ciInstanceKlass* super = this->super(); |
465 GrowableArray<ciField*>* super_fields = NULL; | |
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466 if (super != NULL && super->has_nonstatic_fields()) { |
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467 int super_fsize = super->nonstatic_field_size() * heapOopSize; |
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468 int super_flen = super->nof_nonstatic_fields(); |
0 | 469 super_fields = super->_nonstatic_fields; |
470 assert(super_flen == 0 || super_fields != NULL, "first get nof_fields"); | |
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471 // See if I am no larger than my super; if so, I can use his fields. |
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472 if (fsize == super_fsize) { |
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473 _nonstatic_fields = super_fields; |
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474 return super_fields->length(); |
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475 } |
0 | 476 } |
477 | |
478 GrowableArray<ciField*>* fields = NULL; | |
479 GUARDED_VM_ENTRY({ | |
480 fields = compute_nonstatic_fields_impl(super_fields); | |
481 }); | |
482 | |
483 if (fields == NULL) { | |
484 // This can happen if this class (java.lang.Class) has invisible fields. | |
485 _nonstatic_fields = super_fields; | |
486 return super_fields->length(); | |
487 } | |
488 | |
489 int flen = fields->length(); | |
490 | |
491 // Now sort them by offset, ascending. | |
492 // (In principle, they could mix with superclass fields.) | |
493 fields->sort(sort_field_by_offset); | |
494 _nonstatic_fields = fields; | |
495 return flen; | |
496 } | |
497 | |
498 GrowableArray<ciField*>* | |
499 ciInstanceKlass::compute_nonstatic_fields_impl(GrowableArray<ciField*>* | |
500 super_fields) { | |
501 ASSERT_IN_VM; | |
502 Arena* arena = CURRENT_ENV->arena(); | |
503 int flen = 0; | |
504 GrowableArray<ciField*>* fields = NULL; | |
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505 InstanceKlass* k = get_instanceKlass(); |
3938 | 506 for (JavaFieldStream fs(k); !fs.done(); fs.next()) { |
507 if (fs.access_flags().is_static()) continue; | |
508 flen += 1; | |
509 } | |
0 | 510 |
3938 | 511 // allocate the array: |
512 if (flen == 0) { | |
513 return NULL; // return nothing if none are locally declared | |
514 } | |
515 if (super_fields != NULL) { | |
516 flen += super_fields->length(); | |
517 } | |
518 fields = new (arena) GrowableArray<ciField*>(arena, flen, 0, NULL); | |
519 if (super_fields != NULL) { | |
520 fields->appendAll(super_fields); | |
521 } | |
522 | |
523 for (JavaFieldStream fs(k); !fs.done(); fs.next()) { | |
524 if (fs.access_flags().is_static()) continue; | |
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525 fieldDescriptor& fd = fs.field_descriptor(); |
3938 | 526 ciField* field = new (arena) ciField(&fd); |
527 fields->append(field); | |
0 | 528 } |
529 assert(fields->length() == flen, "sanity"); | |
530 return fields; | |
531 } | |
532 | |
533 // ------------------------------------------------------------------ | |
534 // ciInstanceKlass::find_method | |
535 // | |
536 // Find a method in this klass. | |
537 ciMethod* ciInstanceKlass::find_method(ciSymbol* name, ciSymbol* signature) { | |
538 VM_ENTRY_MARK; | |
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539 InstanceKlass* k = get_instanceKlass(); |
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540 Symbol* name_sym = name->get_symbol(); |
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541 Symbol* sig_sym= signature->get_symbol(); |
0 | 542 |
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543 Method* m = k->find_method(name_sym, sig_sym); |
0 | 544 if (m == NULL) return NULL; |
545 | |
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546 return CURRENT_THREAD_ENV->get_method(m); |
0 | 547 } |
548 | |
549 // ------------------------------------------------------------------ | |
550 // ciInstanceKlass::is_leaf_type | |
551 bool ciInstanceKlass::is_leaf_type() { | |
552 assert(is_loaded(), "must be loaded"); | |
553 if (is_shared()) { | |
554 return is_final(); // approximately correct | |
555 } else { | |
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556 return !_has_subklass && (nof_implementors() == 0); |
0 | 557 } |
558 } | |
559 | |
560 // ------------------------------------------------------------------ | |
561 // ciInstanceKlass::implementor | |
562 // | |
563 // Report an implementor of this interface. | |
564 // Note that there are various races here, since my copy | |
565 // of _nof_implementors might be out of date with respect | |
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566 // to results returned by InstanceKlass::implementor. |
0 | 567 // This is OK, since any dependencies we decide to assert |
568 // will be checked later under the Compile_lock. | |
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569 ciInstanceKlass* ciInstanceKlass::implementor() { |
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570 ciInstanceKlass* impl = _implementor; |
0 | 571 if (impl == NULL) { |
572 // Go into the VM to fetch the implementor. | |
573 { | |
574 VM_ENTRY_MARK; | |
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575 Klass* k = get_instanceKlass()->implementor(); |
0 | 576 if (k != NULL) { |
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577 if (k == get_instanceKlass()) { |
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578 // More than one implementors. Use 'this' in this case. |
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579 impl = this; |
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580 } else { |
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581 impl = CURRENT_THREAD_ENV->get_instance_klass(k); |
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582 } |
0 | 583 } |
584 } | |
585 // Memoize this result. | |
586 if (!is_shared()) { | |
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587 _implementor = impl; |
0 | 588 } |
589 } | |
590 return impl; | |
591 } | |
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592 |
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593 // Utility class for printing of the contents of the static fields for |
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594 // use by compilation replay. It only prints out the information that |
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595 // could be consumed by the compiler, so for primitive types it prints |
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596 // out the actual value. For Strings it's the actual string value. |
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597 // For array types it it's first level array size since that's the |
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598 // only value which statically unchangeable. For all other reference |
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599 // types it simply prints out the dynamic type. |
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600 |
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601 class StaticFinalFieldPrinter : public FieldClosure { |
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602 outputStream* _out; |
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603 const char* _holder; |
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604 public: |
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605 StaticFinalFieldPrinter(outputStream* out, const char* holder) : |
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606 _out(out), |
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607 _holder(holder) { |
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608 } |
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609 void do_field(fieldDescriptor* fd) { |
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610 if (fd->is_final() && !fd->has_initial_value()) { |
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611 ResourceMark rm; |
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612 oop mirror = fd->field_holder()->java_mirror(); |
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613 _out->print("staticfield %s %s %s ", _holder, fd->name()->as_quoted_ascii(), fd->signature()->as_quoted_ascii()); |
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614 switch (fd->field_type()) { |
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615 case T_BYTE: _out->print_cr("%d", mirror->byte_field(fd->offset())); break; |
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616 case T_BOOLEAN: _out->print_cr("%d", mirror->bool_field(fd->offset())); break; |
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617 case T_SHORT: _out->print_cr("%d", mirror->short_field(fd->offset())); break; |
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618 case T_CHAR: _out->print_cr("%d", mirror->char_field(fd->offset())); break; |
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619 case T_INT: _out->print_cr("%d", mirror->int_field(fd->offset())); break; |
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620 case T_LONG: _out->print_cr(INT64_FORMAT, mirror->long_field(fd->offset())); break; |
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621 case T_FLOAT: { |
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622 float f = mirror->float_field(fd->offset()); |
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623 _out->print_cr("%d", *(int*)&f); |
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624 break; |
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625 } |
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626 case T_DOUBLE: { |
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627 double d = mirror->double_field(fd->offset()); |
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628 _out->print_cr(INT64_FORMAT, *(jlong*)&d); |
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629 break; |
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630 } |
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631 case T_ARRAY: { |
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632 oop value = mirror->obj_field_acquire(fd->offset()); |
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633 if (value == NULL) { |
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634 _out->print_cr("null"); |
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635 } else { |
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636 typeArrayOop ta = (typeArrayOop)value; |
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637 _out->print("%d", ta->length()); |
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638 if (value->is_objArray()) { |
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639 objArrayOop oa = (objArrayOop)value; |
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640 const char* klass_name = value->klass()->name()->as_quoted_ascii(); |
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641 _out->print(" %s", klass_name); |
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642 } |
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643 _out->cr(); |
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644 } |
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645 break; |
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646 } |
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647 case T_OBJECT: { |
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648 oop value = mirror->obj_field_acquire(fd->offset()); |
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649 if (value == NULL) { |
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650 _out->print_cr("null"); |
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651 } else if (value->is_instance()) { |
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652 if (value->is_a(SystemDictionary::String_klass())) { |
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653 _out->print("\""); |
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654 _out->print_raw(java_lang_String::as_quoted_ascii(value)); |
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655 _out->print_cr("\""); |
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656 } else { |
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657 const char* klass_name = value->klass()->name()->as_quoted_ascii(); |
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658 _out->print_cr(klass_name); |
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659 } |
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660 } else { |
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661 ShouldNotReachHere(); |
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662 } |
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663 break; |
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664 } |
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665 default: |
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666 ShouldNotReachHere(); |
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667 } |
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668 } |
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669 } |
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670 }; |
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671 |
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672 |
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673 void ciInstanceKlass::dump_replay_data(outputStream* out) { |
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674 ASSERT_IN_VM; |
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675 ResourceMark rm; |
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676 |
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677 InstanceKlass* ik = get_instanceKlass(); |
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678 ConstantPool* cp = ik->constants(); |
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679 |
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680 // Try to record related loaded classes |
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681 Klass* sub = ik->subklass(); |
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682 while (sub != NULL) { |
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683 if (sub->oop_is_instance()) { |
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684 out->print_cr("instanceKlass %s", sub->name()->as_quoted_ascii()); |
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685 } |
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686 sub = sub->next_sibling(); |
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687 } |
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688 |
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689 // Dump out the state of the constant pool tags. During replay the |
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690 // tags will be validated for things which shouldn't change and |
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691 // classes will be resolved if the tags indicate that they were |
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692 // resolved at compile time. |
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693 out->print("ciInstanceKlass %s %d %d %d", ik->name()->as_quoted_ascii(), |
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694 is_linked(), is_initialized(), cp->length()); |
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695 for (int index = 1; index < cp->length(); index++) { |
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696 out->print(" %d", cp->tags()->at(index)); |
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697 } |
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698 out->cr(); |
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699 if (is_initialized()) { |
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700 // Dump out the static final fields in case the compilation relies |
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701 // on their value for correct replay. |
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702 StaticFinalFieldPrinter sffp(out, ik->name()->as_quoted_ascii()); |
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703 ik->do_local_static_fields(&sffp); |
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704 } |
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705 } |