Mercurial > hg > graal-compiler
annotate src/share/vm/interpreter/linkResolver.cpp @ 1711:a6bff45449bc
6973570: OrderAccess::storestore() scales poorly on multi-socket x64 and sparc: cache-line ping-ponging
Summary: volatile store to static variable removed in favour of a volatile store to stack to avoid excessive cache coherency traffic; verified that the volatile store is not elided by any of our current compilers.
Reviewed-by: dholmes, dice, jcoomes, kvn
author | ysr |
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date | Tue, 10 Aug 2010 14:53:35 -0700 |
parents | 083fde3b838e |
children | d5d065957597 |
rev | line source |
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0 | 1 /* |
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2 * Copyright (c) 1997, 2009, 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 | |
25 #include "incls/_precompiled.incl" | |
26 #include "incls/_linkResolver.cpp.incl" | |
27 | |
28 //------------------------------------------------------------------------------------------------------------------------ | |
29 // Implementation of FieldAccessInfo | |
30 | |
31 void FieldAccessInfo::set(KlassHandle klass, symbolHandle name, int field_index, int field_offset, | |
32 BasicType field_type, AccessFlags access_flags) { | |
33 _klass = klass; | |
34 _name = name; | |
35 _field_index = field_index; | |
36 _field_offset = field_offset; | |
37 _field_type = field_type; | |
38 _access_flags = access_flags; | |
39 } | |
40 | |
41 | |
42 //------------------------------------------------------------------------------------------------------------------------ | |
43 // Implementation of CallInfo | |
44 | |
45 | |
46 void CallInfo::set_static(KlassHandle resolved_klass, methodHandle resolved_method, TRAPS) { | |
47 int vtable_index = methodOopDesc::nonvirtual_vtable_index; | |
48 set_common(resolved_klass, resolved_klass, resolved_method, resolved_method, vtable_index, CHECK); | |
49 } | |
50 | |
51 | |
52 void CallInfo::set_interface(KlassHandle resolved_klass, KlassHandle selected_klass, methodHandle resolved_method, methodHandle selected_method, TRAPS) { | |
53 // This is only called for interface methods. If the resolved_method | |
54 // comes from java/lang/Object, it can be the subject of a virtual call, so | |
55 // we should pick the vtable index from the resolved method. | |
56 // Other than that case, there is no valid vtable index to specify. | |
57 int vtable_index = methodOopDesc::invalid_vtable_index; | |
1142 | 58 if (resolved_method->method_holder() == SystemDictionary::Object_klass()) { |
0 | 59 assert(resolved_method->vtable_index() == selected_method->vtable_index(), "sanity check"); |
60 vtable_index = resolved_method->vtable_index(); | |
61 } | |
62 set_common(resolved_klass, selected_klass, resolved_method, selected_method, vtable_index, CHECK); | |
63 } | |
64 | |
65 void CallInfo::set_virtual(KlassHandle resolved_klass, KlassHandle selected_klass, methodHandle resolved_method, methodHandle selected_method, int vtable_index, TRAPS) { | |
66 assert(vtable_index >= 0 || vtable_index == methodOopDesc::nonvirtual_vtable_index, "valid index"); | |
67 set_common(resolved_klass, selected_klass, resolved_method, selected_method, vtable_index, CHECK); | |
68 } | |
69 | |
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70 void CallInfo::set_dynamic(methodHandle resolved_method, TRAPS) { |
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71 assert(resolved_method->is_method_handle_invoke(), ""); |
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72 KlassHandle resolved_klass = SystemDictionaryHandles::MethodHandle_klass(); |
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73 assert(resolved_klass == resolved_method->method_holder(), ""); |
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74 int vtable_index = methodOopDesc::nonvirtual_vtable_index; |
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75 assert(resolved_method->vtable_index() == vtable_index, ""); |
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76 set_common(resolved_klass, KlassHandle(), resolved_method, resolved_method, vtable_index, CHECK); |
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77 } |
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78 |
0 | 79 void CallInfo::set_common(KlassHandle resolved_klass, KlassHandle selected_klass, methodHandle resolved_method, methodHandle selected_method, int vtable_index, TRAPS) { |
80 assert(resolved_method->signature() == selected_method->signature(), "signatures must correspond"); | |
81 _resolved_klass = resolved_klass; | |
82 _selected_klass = selected_klass; | |
83 _resolved_method = resolved_method; | |
84 _selected_method = selected_method; | |
85 _vtable_index = vtable_index; | |
86 if (CompilationPolicy::mustBeCompiled(selected_method)) { | |
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87 // This path is unusual, mostly used by the '-Xcomp' stress test mode. |
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88 |
0 | 89 // Note: with several active threads, the mustBeCompiled may be true |
90 // while canBeCompiled is false; remove assert | |
91 // assert(CompilationPolicy::canBeCompiled(selected_method), "cannot compile"); | |
92 if (THREAD->is_Compiler_thread()) { | |
93 // don't force compilation, resolve was on behalf of compiler | |
94 return; | |
95 } | |
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96 if (instanceKlass::cast(selected_method->method_holder())->is_not_initialized()) { |
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97 // 'is_not_initialized' means not only '!is_initialized', but also that |
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98 // initialization has not been started yet ('!being_initialized') |
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99 // Do not force compilation of methods in uninitialized classes. |
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100 // Note that doing this would throw an assert later, |
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101 // in CompileBroker::compile_method. |
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102 // We sometimes use the link resolver to do reflective lookups |
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103 // even before classes are initialized. |
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104 return; |
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105 } |
0 | 106 CompileBroker::compile_method(selected_method, InvocationEntryBci, |
107 methodHandle(), 0, "mustBeCompiled", CHECK); | |
108 } | |
109 } | |
110 | |
111 | |
112 //------------------------------------------------------------------------------------------------------------------------ | |
113 // Klass resolution | |
114 | |
115 void LinkResolver::check_klass_accessability(KlassHandle ref_klass, KlassHandle sel_klass, TRAPS) { | |
116 if (!Reflection::verify_class_access(ref_klass->as_klassOop(), | |
117 sel_klass->as_klassOop(), | |
118 true)) { | |
119 ResourceMark rm(THREAD); | |
120 Exceptions::fthrow( | |
121 THREAD_AND_LOCATION, | |
122 vmSymbolHandles::java_lang_IllegalAccessError(), | |
123 "tried to access class %s from class %s", | |
124 sel_klass->external_name(), | |
125 ref_klass->external_name() | |
126 ); | |
127 return; | |
128 } | |
129 } | |
130 | |
131 void LinkResolver::resolve_klass(KlassHandle& result, constantPoolHandle pool, int index, TRAPS) { | |
132 klassOop result_oop = pool->klass_ref_at(index, CHECK); | |
133 result = KlassHandle(THREAD, result_oop); | |
134 } | |
135 | |
136 void LinkResolver::resolve_klass_no_update(KlassHandle& result, constantPoolHandle pool, int index, TRAPS) { | |
137 klassOop result_oop = | |
138 constantPoolOopDesc::klass_ref_at_if_loaded_check(pool, index, CHECK); | |
139 result = KlassHandle(THREAD, result_oop); | |
140 } | |
141 | |
142 | |
143 //------------------------------------------------------------------------------------------------------------------------ | |
144 // Method resolution | |
145 // | |
146 // According to JVM spec. $5.4.3c & $5.4.3d | |
147 | |
148 void LinkResolver::lookup_method_in_klasses(methodHandle& result, KlassHandle klass, symbolHandle name, symbolHandle signature, TRAPS) { | |
149 methodOop result_oop = klass->uncached_lookup_method(name(), signature()); | |
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150 if (EnableMethodHandles && result_oop != NULL) { |
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151 switch (result_oop->intrinsic_id()) { |
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152 case vmIntrinsics::_invokeExact: |
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153 case vmIntrinsics::_invokeGeneric: |
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154 case vmIntrinsics::_invokeDynamic: |
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155 // Do not link directly to these. The VM must produce a synthetic one using lookup_implicit_method. |
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156 return; |
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157 } |
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158 } |
0 | 159 result = methodHandle(THREAD, result_oop); |
160 } | |
161 | |
162 // returns first instance method | |
163 void LinkResolver::lookup_instance_method_in_klasses(methodHandle& result, KlassHandle klass, symbolHandle name, symbolHandle signature, TRAPS) { | |
164 methodOop result_oop = klass->uncached_lookup_method(name(), signature()); | |
165 result = methodHandle(THREAD, result_oop); | |
166 while (!result.is_null() && result->is_static()) { | |
167 klass = KlassHandle(THREAD, Klass::cast(result->method_holder())->super()); | |
168 result = methodHandle(THREAD, klass->uncached_lookup_method(name(), signature())); | |
169 } | |
170 } | |
171 | |
172 | |
173 int LinkResolver::vtable_index_of_miranda_method(KlassHandle klass, symbolHandle name, symbolHandle signature, TRAPS) { | |
174 ResourceMark rm(THREAD); | |
175 klassVtable *vt = instanceKlass::cast(klass())->vtable(); | |
176 return vt->index_of_miranda(name(), signature()); | |
177 } | |
178 | |
179 void LinkResolver::lookup_method_in_interfaces(methodHandle& result, KlassHandle klass, symbolHandle name, symbolHandle signature, TRAPS) { | |
180 instanceKlass *ik = instanceKlass::cast(klass()); | |
181 result = methodHandle(THREAD, ik->lookup_method_in_all_interfaces(name(), signature())); | |
182 } | |
183 | |
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184 void LinkResolver::lookup_implicit_method(methodHandle& result, |
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185 KlassHandle klass, symbolHandle name, symbolHandle signature, |
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186 KlassHandle current_klass, |
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187 TRAPS) { |
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188 if (EnableMethodHandles && |
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189 klass() == SystemDictionary::MethodHandle_klass() && |
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190 methodOopDesc::is_method_handle_invoke_name(name())) { |
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191 if (!MethodHandles::enabled()) { |
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192 // Make sure the Java part of the runtime has been booted up. |
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193 klassOop natives = SystemDictionary::MethodHandleNatives_klass(); |
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194 if (natives == NULL || instanceKlass::cast(natives)->is_not_initialized()) { |
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195 SystemDictionary::resolve_or_fail(vmSymbolHandles::sun_dyn_MethodHandleNatives(), |
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196 Handle(), |
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197 Handle(), |
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198 true, |
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199 CHECK); |
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200 } |
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201 } |
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202 methodOop result_oop = SystemDictionary::find_method_handle_invoke(name, |
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203 signature, |
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204 current_klass, |
710 | 205 CHECK); |
206 if (result_oop != NULL) { | |
207 assert(result_oop->is_method_handle_invoke() && result_oop->signature() == signature(), "consistent"); | |
208 result = methodHandle(THREAD, result_oop); | |
209 } | |
210 } | |
211 } | |
212 | |
0 | 213 void LinkResolver::check_method_accessability(KlassHandle ref_klass, |
214 KlassHandle resolved_klass, | |
215 KlassHandle sel_klass, | |
216 methodHandle sel_method, | |
217 TRAPS) { | |
218 | |
219 AccessFlags flags = sel_method->access_flags(); | |
220 | |
221 // Special case: arrays always override "clone". JVMS 2.15. | |
222 // If the resolved klass is an array class, and the declaring class | |
223 // is java.lang.Object and the method is "clone", set the flags | |
224 // to public. | |
225 // | |
226 // We'll check for the method name first, as that's most likely | |
227 // to be false (so we'll short-circuit out of these tests). | |
228 if (sel_method->name() == vmSymbols::clone_name() && | |
1142 | 229 sel_klass() == SystemDictionary::Object_klass() && |
0 | 230 resolved_klass->oop_is_array()) { |
231 // We need to change "protected" to "public". | |
232 assert(flags.is_protected(), "clone not protected?"); | |
233 jint new_flags = flags.as_int(); | |
234 new_flags = new_flags & (~JVM_ACC_PROTECTED); | |
235 new_flags = new_flags | JVM_ACC_PUBLIC; | |
236 flags.set_flags(new_flags); | |
237 } | |
238 | |
239 if (!Reflection::verify_field_access(ref_klass->as_klassOop(), | |
240 resolved_klass->as_klassOop(), | |
241 sel_klass->as_klassOop(), | |
242 flags, | |
243 true)) { | |
244 ResourceMark rm(THREAD); | |
245 Exceptions::fthrow( | |
246 THREAD_AND_LOCATION, | |
247 vmSymbolHandles::java_lang_IllegalAccessError(), | |
248 "tried to access method %s.%s%s from class %s", | |
249 sel_klass->external_name(), | |
250 sel_method->name()->as_C_string(), | |
251 sel_method->signature()->as_C_string(), | |
252 ref_klass->external_name() | |
253 ); | |
254 return; | |
255 } | |
256 } | |
257 | |
258 void LinkResolver::resolve_method(methodHandle& resolved_method, KlassHandle& resolved_klass, | |
259 constantPoolHandle pool, int index, TRAPS) { | |
260 | |
261 // resolve klass | |
262 resolve_klass(resolved_klass, pool, index, CHECK); | |
263 | |
264 symbolHandle method_name (THREAD, pool->name_ref_at(index)); | |
265 symbolHandle method_signature (THREAD, pool->signature_ref_at(index)); | |
266 KlassHandle current_klass(THREAD, pool->pool_holder()); | |
267 | |
268 resolve_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, true, CHECK); | |
269 } | |
270 | |
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271 void LinkResolver::resolve_dynamic_method(methodHandle& resolved_method, KlassHandle& resolved_klass, constantPoolHandle pool, int index, TRAPS) { |
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272 // The class is java.dyn.MethodHandle |
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273 resolved_klass = SystemDictionaryHandles::MethodHandle_klass(); |
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274 |
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275 symbolHandle method_name = vmSymbolHandles::invokeExact_name(); |
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276 |
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277 symbolHandle method_signature(THREAD, pool->signature_ref_at(index)); |
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278 KlassHandle current_klass (THREAD, pool->pool_holder()); |
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279 |
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280 resolve_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, true, CHECK); |
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281 } |
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282 |
0 | 283 void LinkResolver::resolve_interface_method(methodHandle& resolved_method, KlassHandle& resolved_klass, constantPoolHandle pool, int index, TRAPS) { |
284 | |
285 // resolve klass | |
286 resolve_klass(resolved_klass, pool, index, CHECK); | |
287 symbolHandle method_name (THREAD, pool->name_ref_at(index)); | |
288 symbolHandle method_signature (THREAD, pool->signature_ref_at(index)); | |
289 KlassHandle current_klass(THREAD, pool->pool_holder()); | |
290 | |
291 resolve_interface_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, true, CHECK); | |
292 } | |
293 | |
294 | |
295 void LinkResolver::resolve_method(methodHandle& resolved_method, KlassHandle resolved_klass, | |
296 symbolHandle method_name, symbolHandle method_signature, | |
297 KlassHandle current_klass, bool check_access, TRAPS) { | |
298 | |
299 // 1. check if klass is not interface | |
300 if (resolved_klass->is_interface()) { | |
301 char buf[200]; | |
302 jio_snprintf(buf, sizeof(buf), "Found interface %s, but class was expected", Klass::cast(resolved_klass())->external_name()); | |
303 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); | |
304 } | |
305 | |
306 // 2. lookup method in resolved klass and its super klasses | |
307 lookup_method_in_klasses(resolved_method, resolved_klass, method_name, method_signature, CHECK); | |
308 | |
309 if (resolved_method.is_null()) { // not found in the class hierarchy | |
310 // 3. lookup method in all the interfaces implemented by the resolved klass | |
311 lookup_method_in_interfaces(resolved_method, resolved_klass, method_name, method_signature, CHECK); | |
312 | |
313 if (resolved_method.is_null()) { | |
710 | 314 // JSR 292: see if this is an implicitly generated method MethodHandle.invoke(*...) |
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315 lookup_implicit_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, CHECK); |
710 | 316 } |
317 | |
318 if (resolved_method.is_null()) { | |
0 | 319 // 4. method lookup failed |
320 ResourceMark rm(THREAD); | |
321 THROW_MSG(vmSymbols::java_lang_NoSuchMethodError(), | |
322 methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()), | |
323 method_name(), | |
324 method_signature())); | |
325 } | |
326 } | |
327 | |
328 // 5. check if method is concrete | |
329 if (resolved_method->is_abstract() && !resolved_klass->is_abstract()) { | |
330 ResourceMark rm(THREAD); | |
331 THROW_MSG(vmSymbols::java_lang_AbstractMethodError(), | |
332 methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()), | |
333 method_name(), | |
334 method_signature())); | |
335 } | |
336 | |
337 // 6. access checks, access checking may be turned off when calling from within the VM. | |
338 if (check_access) { | |
339 assert(current_klass.not_null() , "current_klass should not be null"); | |
340 | |
341 // check if method can be accessed by the referring class | |
342 check_method_accessability(current_klass, | |
343 resolved_klass, | |
344 KlassHandle(THREAD, resolved_method->method_holder()), | |
345 resolved_method, | |
346 CHECK); | |
347 | |
348 // check loader constraints | |
349 Handle loader (THREAD, instanceKlass::cast(current_klass())->class_loader()); | |
350 Handle class_loader (THREAD, instanceKlass::cast(resolved_method->method_holder())->class_loader()); | |
351 { | |
352 ResourceMark rm(THREAD); | |
353 char* failed_type_name = | |
354 SystemDictionary::check_signature_loaders(method_signature, loader, | |
355 class_loader, true, CHECK); | |
356 if (failed_type_name != NULL) { | |
357 const char* msg = "loader constraint violation: when resolving method" | |
358 " \"%s\" the class loader (instance of %s) of the current class, %s," | |
359 " and the class loader (instance of %s) for resolved class, %s, have" | |
360 " different Class objects for the type %s used in the signature"; | |
361 char* sig = methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()),method_name(),method_signature()); | |
362 const char* loader1 = SystemDictionary::loader_name(loader()); | |
363 char* current = instanceKlass::cast(current_klass())->name()->as_C_string(); | |
364 const char* loader2 = SystemDictionary::loader_name(class_loader()); | |
365 char* resolved = instanceKlass::cast(resolved_klass())->name()->as_C_string(); | |
366 size_t buflen = strlen(msg) + strlen(sig) + strlen(loader1) + | |
367 strlen(current) + strlen(loader2) + strlen(resolved) + | |
368 strlen(failed_type_name); | |
369 char* buf = NEW_RESOURCE_ARRAY_IN_THREAD(THREAD, char, buflen); | |
370 jio_snprintf(buf, buflen, msg, sig, loader1, current, loader2, | |
371 resolved, failed_type_name); | |
372 THROW_MSG(vmSymbols::java_lang_LinkageError(), buf); | |
373 } | |
374 } | |
375 } | |
376 } | |
377 | |
378 void LinkResolver::resolve_interface_method(methodHandle& resolved_method, | |
379 KlassHandle resolved_klass, | |
380 symbolHandle method_name, | |
381 symbolHandle method_signature, | |
382 KlassHandle current_klass, | |
383 bool check_access, TRAPS) { | |
384 | |
385 // check if klass is interface | |
386 if (!resolved_klass->is_interface()) { | |
387 char buf[200]; | |
388 jio_snprintf(buf, sizeof(buf), "Found class %s, but interface was expected", Klass::cast(resolved_klass())->external_name()); | |
389 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); | |
390 } | |
391 | |
392 // lookup method in this interface or its super, java.lang.Object | |
393 lookup_instance_method_in_klasses(resolved_method, resolved_klass, method_name, method_signature, CHECK); | |
394 | |
395 if (resolved_method.is_null()) { | |
396 // lookup method in all the super-interfaces | |
397 lookup_method_in_interfaces(resolved_method, resolved_klass, method_name, method_signature, CHECK); | |
398 if (resolved_method.is_null()) { | |
399 // no method found | |
400 ResourceMark rm(THREAD); | |
401 THROW_MSG(vmSymbols::java_lang_NoSuchMethodError(), | |
402 methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()), | |
403 method_name(), | |
404 method_signature())); | |
405 } | |
406 } | |
407 | |
408 if (check_access) { | |
409 HandleMark hm(THREAD); | |
410 Handle loader (THREAD, instanceKlass::cast(current_klass())->class_loader()); | |
411 Handle class_loader (THREAD, instanceKlass::cast(resolved_method->method_holder())->class_loader()); | |
412 { | |
413 ResourceMark rm(THREAD); | |
414 char* failed_type_name = | |
415 SystemDictionary::check_signature_loaders(method_signature, loader, | |
416 class_loader, true, CHECK); | |
417 if (failed_type_name != NULL) { | |
418 const char* msg = "loader constraint violation: when resolving " | |
419 "interface method \"%s\" the class loader (instance of %s) of the " | |
420 "current class, %s, and the class loader (instance of %s) for " | |
421 "resolved class, %s, have different Class objects for the type %s " | |
422 "used in the signature"; | |
423 char* sig = methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()),method_name(),method_signature()); | |
424 const char* loader1 = SystemDictionary::loader_name(loader()); | |
425 char* current = instanceKlass::cast(current_klass())->name()->as_C_string(); | |
426 const char* loader2 = SystemDictionary::loader_name(class_loader()); | |
427 char* resolved = instanceKlass::cast(resolved_klass())->name()->as_C_string(); | |
428 size_t buflen = strlen(msg) + strlen(sig) + strlen(loader1) + | |
429 strlen(current) + strlen(loader2) + strlen(resolved) + | |
430 strlen(failed_type_name); | |
431 char* buf = NEW_RESOURCE_ARRAY_IN_THREAD(THREAD, char, buflen); | |
432 jio_snprintf(buf, buflen, msg, sig, loader1, current, loader2, | |
433 resolved, failed_type_name); | |
434 THROW_MSG(vmSymbols::java_lang_LinkageError(), buf); | |
435 } | |
436 } | |
437 } | |
438 } | |
439 | |
440 //------------------------------------------------------------------------------------------------------------------------ | |
441 // Field resolution | |
442 | |
443 void LinkResolver::check_field_accessability(KlassHandle ref_klass, | |
444 KlassHandle resolved_klass, | |
445 KlassHandle sel_klass, | |
446 fieldDescriptor& fd, | |
447 TRAPS) { | |
448 if (!Reflection::verify_field_access(ref_klass->as_klassOop(), | |
449 resolved_klass->as_klassOop(), | |
450 sel_klass->as_klassOop(), | |
451 fd.access_flags(), | |
452 true)) { | |
453 ResourceMark rm(THREAD); | |
454 Exceptions::fthrow( | |
455 THREAD_AND_LOCATION, | |
456 vmSymbolHandles::java_lang_IllegalAccessError(), | |
457 "tried to access field %s.%s from class %s", | |
458 sel_klass->external_name(), | |
459 fd.name()->as_C_string(), | |
460 ref_klass->external_name() | |
461 ); | |
462 return; | |
463 } | |
464 } | |
465 | |
466 void LinkResolver::resolve_field(FieldAccessInfo& result, constantPoolHandle pool, int index, Bytecodes::Code byte, bool check_only, TRAPS) { | |
467 resolve_field(result, pool, index, byte, check_only, true, CHECK); | |
468 } | |
469 | |
470 void LinkResolver::resolve_field(FieldAccessInfo& result, constantPoolHandle pool, int index, Bytecodes::Code byte, bool check_only, bool update_pool, TRAPS) { | |
471 assert(byte == Bytecodes::_getstatic || byte == Bytecodes::_putstatic || | |
472 byte == Bytecodes::_getfield || byte == Bytecodes::_putfield, "bad bytecode"); | |
473 | |
474 bool is_static = (byte == Bytecodes::_getstatic || byte == Bytecodes::_putstatic); | |
475 bool is_put = (byte == Bytecodes::_putfield || byte == Bytecodes::_putstatic); | |
476 | |
477 // resolve specified klass | |
478 KlassHandle resolved_klass; | |
479 if (update_pool) { | |
480 resolve_klass(resolved_klass, pool, index, CHECK); | |
481 } else { | |
482 resolve_klass_no_update(resolved_klass, pool, index, CHECK); | |
483 } | |
484 // Load these early in case the resolve of the containing klass fails | |
485 symbolOop field = pool->name_ref_at(index); | |
486 symbolHandle field_h (THREAD, field); // preserve in case we need the name | |
487 symbolOop sig = pool->signature_ref_at(index); | |
488 // Check if there's a resolved klass containing the field | |
489 if( resolved_klass.is_null() ) { | |
490 ResourceMark rm(THREAD); | |
491 THROW_MSG(vmSymbols::java_lang_NoSuchFieldError(), field->as_C_string()); | |
492 } | |
493 | |
494 // Resolve instance field | |
495 fieldDescriptor fd; // find_field initializes fd if found | |
496 KlassHandle sel_klass(THREAD, instanceKlass::cast(resolved_klass())->find_field(field, sig, &fd)); | |
497 // check if field exists; i.e., if a klass containing the field def has been selected | |
498 if (sel_klass.is_null()){ | |
499 ResourceMark rm(THREAD); | |
500 THROW_MSG(vmSymbols::java_lang_NoSuchFieldError(), field->as_C_string()); | |
501 } | |
502 | |
503 // check access | |
504 KlassHandle ref_klass(THREAD, pool->pool_holder()); | |
505 check_field_accessability(ref_klass, resolved_klass, sel_klass, fd, CHECK); | |
506 | |
507 // check for errors | |
508 if (is_static != fd.is_static()) { | |
509 char msg[200]; | |
510 jio_snprintf(msg, sizeof(msg), "Expected %s field %s.%s", is_static ? "static" : "non-static", Klass::cast(resolved_klass())->external_name(), fd.name()->as_C_string()); | |
511 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), msg); | |
512 } | |
513 | |
514 // Final fields can only be accessed from its own class. | |
515 if (is_put && fd.access_flags().is_final() && sel_klass() != pool->pool_holder()) { | |
516 THROW(vmSymbols::java_lang_IllegalAccessError()); | |
517 } | |
518 | |
519 // initialize resolved_klass if necessary | |
520 // note 1: the klass which declared the field must be initialized (i.e, sel_klass) | |
521 // according to the newest JVM spec (5.5, p.170) - was bug (gri 7/28/99) | |
522 // | |
523 // note 2: we don't want to force initialization if we are just checking | |
524 // if the field access is legal; e.g., during compilation | |
525 if (is_static && !check_only) { | |
526 sel_klass->initialize(CHECK); | |
527 } | |
528 | |
529 { | |
530 HandleMark hm(THREAD); | |
531 Handle ref_loader (THREAD, instanceKlass::cast(ref_klass())->class_loader()); | |
532 Handle sel_loader (THREAD, instanceKlass::cast(sel_klass())->class_loader()); | |
533 symbolHandle signature_ref (THREAD, pool->signature_ref_at(index)); | |
534 { | |
535 ResourceMark rm(THREAD); | |
536 char* failed_type_name = | |
537 SystemDictionary::check_signature_loaders(signature_ref, | |
538 ref_loader, sel_loader, | |
539 false, | |
540 CHECK); | |
541 if (failed_type_name != NULL) { | |
542 const char* msg = "loader constraint violation: when resolving field" | |
543 " \"%s\" the class loader (instance of %s) of the referring class, " | |
544 "%s, and the class loader (instance of %s) for the field's resolved " | |
545 "type, %s, have different Class objects for that type"; | |
546 char* field_name = field_h()->as_C_string(); | |
547 const char* loader1 = SystemDictionary::loader_name(ref_loader()); | |
548 char* sel = instanceKlass::cast(sel_klass())->name()->as_C_string(); | |
549 const char* loader2 = SystemDictionary::loader_name(sel_loader()); | |
550 size_t buflen = strlen(msg) + strlen(field_name) + strlen(loader1) + | |
551 strlen(sel) + strlen(loader2) + strlen(failed_type_name); | |
552 char* buf = NEW_RESOURCE_ARRAY_IN_THREAD(THREAD, char, buflen); | |
553 jio_snprintf(buf, buflen, msg, field_name, loader1, sel, loader2, | |
554 failed_type_name); | |
555 THROW_MSG(vmSymbols::java_lang_LinkageError(), buf); | |
556 } | |
557 } | |
558 } | |
559 | |
560 // return information. note that the klass is set to the actual klass containing the | |
561 // field, otherwise access of static fields in superclasses will not work. | |
562 KlassHandle holder (THREAD, fd.field_holder()); | |
563 symbolHandle name (THREAD, fd.name()); | |
564 result.set(holder, name, fd.index(), fd.offset(), fd.field_type(), fd.access_flags()); | |
565 } | |
566 | |
567 | |
568 //------------------------------------------------------------------------------------------------------------------------ | |
569 // Invoke resolution | |
570 // | |
571 // Naming conventions: | |
572 // | |
573 // resolved_method the specified method (i.e., static receiver specified via constant pool index) | |
574 // sel_method the selected method (selected via run-time lookup; e.g., based on dynamic receiver class) | |
575 // resolved_klass the specified klass (i.e., specified via constant pool index) | |
576 // recv_klass the receiver klass | |
577 | |
578 | |
579 void LinkResolver::resolve_static_call(CallInfo& result, KlassHandle& resolved_klass, symbolHandle method_name, | |
580 symbolHandle method_signature, KlassHandle current_klass, | |
581 bool check_access, bool initialize_class, TRAPS) { | |
582 methodHandle resolved_method; | |
583 linktime_resolve_static_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK); | |
584 resolved_klass = KlassHandle(THREAD, Klass::cast(resolved_method->method_holder())); | |
585 | |
586 // Initialize klass (this should only happen if everything is ok) | |
587 if (initialize_class && resolved_klass->should_be_initialized()) { | |
588 resolved_klass->initialize(CHECK); | |
589 linktime_resolve_static_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK); | |
590 } | |
591 | |
592 // setup result | |
593 result.set_static(resolved_klass, resolved_method, CHECK); | |
594 } | |
595 | |
596 // throws linktime exceptions | |
597 void LinkResolver::linktime_resolve_static_method(methodHandle& resolved_method, KlassHandle resolved_klass, | |
598 symbolHandle method_name, symbolHandle method_signature, | |
599 KlassHandle current_klass, bool check_access, TRAPS) { | |
600 | |
601 resolve_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK); | |
602 assert(resolved_method->name() != vmSymbols::class_initializer_name(), "should have been checked in verifier"); | |
603 | |
604 // check if static | |
605 if (!resolved_method->is_static()) { | |
606 char buf[200]; | |
607 jio_snprintf(buf, sizeof(buf), "Expected static method %s", methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()), | |
608 resolved_method->name(), | |
609 resolved_method->signature())); | |
610 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); | |
611 } | |
612 } | |
613 | |
614 | |
615 void LinkResolver::resolve_special_call(CallInfo& result, KlassHandle resolved_klass, symbolHandle method_name, | |
616 symbolHandle method_signature, KlassHandle current_klass, bool check_access, TRAPS) { | |
617 methodHandle resolved_method; | |
618 linktime_resolve_special_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK); | |
619 runtime_resolve_special_method(result, resolved_method, resolved_klass, current_klass, check_access, CHECK); | |
620 } | |
621 | |
622 // throws linktime exceptions | |
623 void LinkResolver::linktime_resolve_special_method(methodHandle& resolved_method, KlassHandle resolved_klass, | |
624 symbolHandle method_name, symbolHandle method_signature, | |
625 KlassHandle current_klass, bool check_access, TRAPS) { | |
626 | |
627 resolve_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK); | |
628 | |
629 // check if method name is <init>, that it is found in same klass as static type | |
630 if (resolved_method->name() == vmSymbols::object_initializer_name() && | |
631 resolved_method->method_holder() != resolved_klass()) { | |
632 ResourceMark rm(THREAD); | |
633 Exceptions::fthrow( | |
634 THREAD_AND_LOCATION, | |
635 vmSymbolHandles::java_lang_NoSuchMethodError(), | |
636 "%s: method %s%s not found", | |
637 resolved_klass->external_name(), | |
638 resolved_method->name()->as_C_string(), | |
639 resolved_method->signature()->as_C_string() | |
640 ); | |
641 return; | |
642 } | |
643 | |
644 // check if not static | |
645 if (resolved_method->is_static()) { | |
646 char buf[200]; | |
647 jio_snprintf(buf, sizeof(buf), | |
648 "Expecting non-static method %s", | |
649 methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()), | |
650 resolved_method->name(), | |
651 resolved_method->signature())); | |
652 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); | |
653 } | |
654 } | |
655 | |
656 // throws runtime exceptions | |
657 void LinkResolver::runtime_resolve_special_method(CallInfo& result, methodHandle resolved_method, KlassHandle resolved_klass, | |
658 KlassHandle current_klass, bool check_access, TRAPS) { | |
659 | |
660 // resolved method is selected method unless we have an old-style lookup | |
661 methodHandle sel_method(THREAD, resolved_method()); | |
662 | |
663 // check if this is an old-style super call and do a new lookup if so | |
664 { KlassHandle method_klass = KlassHandle(THREAD, | |
665 resolved_method->method_holder()); | |
666 | |
667 if (check_access && | |
668 // a) check if ACC_SUPER flag is set for the current class | |
669 current_klass->is_super() && | |
670 // b) check if the method class is a superclass of the current class (superclass relation is not reflexive!) | |
671 current_klass->is_subtype_of(method_klass()) && current_klass() != method_klass() && | |
672 // c) check if the method is not <init> | |
673 resolved_method->name() != vmSymbols::object_initializer_name()) { | |
674 // Lookup super method | |
675 KlassHandle super_klass(THREAD, current_klass->super()); | |
676 lookup_instance_method_in_klasses(sel_method, super_klass, | |
677 symbolHandle(THREAD, resolved_method->name()), | |
678 symbolHandle(THREAD, resolved_method->signature()), CHECK); | |
679 // check if found | |
680 if (sel_method.is_null()) { | |
681 ResourceMark rm(THREAD); | |
682 THROW_MSG(vmSymbols::java_lang_AbstractMethodError(), | |
683 methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()), | |
684 resolved_method->name(), | |
685 resolved_method->signature())); | |
686 } | |
687 } | |
688 } | |
689 | |
690 // check if not static | |
691 if (sel_method->is_static()) { | |
692 char buf[200]; | |
693 jio_snprintf(buf, sizeof(buf), "Expecting non-static method %s", methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()), | |
694 resolved_method->name(), | |
695 resolved_method->signature())); | |
696 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); | |
697 } | |
698 | |
699 // check if abstract | |
700 if (sel_method->is_abstract()) { | |
701 ResourceMark rm(THREAD); | |
702 THROW_MSG(vmSymbols::java_lang_AbstractMethodError(), | |
703 methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()), | |
704 sel_method->name(), | |
705 sel_method->signature())); | |
706 } | |
707 | |
708 // setup result | |
709 result.set_static(resolved_klass, sel_method, CHECK); | |
710 } | |
711 | |
712 void LinkResolver::resolve_virtual_call(CallInfo& result, Handle recv, KlassHandle receiver_klass, KlassHandle resolved_klass, | |
713 symbolHandle method_name, symbolHandle method_signature, KlassHandle current_klass, | |
714 bool check_access, bool check_null_and_abstract, TRAPS) { | |
715 methodHandle resolved_method; | |
716 linktime_resolve_virtual_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK); | |
717 runtime_resolve_virtual_method(result, resolved_method, resolved_klass, recv, receiver_klass, check_null_and_abstract, CHECK); | |
718 } | |
719 | |
720 // throws linktime exceptions | |
721 void LinkResolver::linktime_resolve_virtual_method(methodHandle &resolved_method, KlassHandle resolved_klass, | |
722 symbolHandle method_name, symbolHandle method_signature, | |
723 KlassHandle current_klass, bool check_access, TRAPS) { | |
724 // normal method resolution | |
725 resolve_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK); | |
726 | |
727 assert(resolved_method->name() != vmSymbols::object_initializer_name(), "should have been checked in verifier"); | |
728 assert(resolved_method->name() != vmSymbols::class_initializer_name (), "should have been checked in verifier"); | |
729 | |
730 // check if not static | |
731 if (resolved_method->is_static()) { | |
732 char buf[200]; | |
733 jio_snprintf(buf, sizeof(buf), "Expecting non-static method %s", methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()), | |
734 resolved_method->name(), | |
735 resolved_method->signature())); | |
736 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); | |
737 } | |
738 } | |
739 | |
740 // throws runtime exceptions | |
741 void LinkResolver::runtime_resolve_virtual_method(CallInfo& result, | |
742 methodHandle resolved_method, | |
743 KlassHandle resolved_klass, | |
744 Handle recv, | |
745 KlassHandle recv_klass, | |
746 bool check_null_and_abstract, | |
747 TRAPS) { | |
748 | |
749 // setup default return values | |
750 int vtable_index = methodOopDesc::invalid_vtable_index; | |
751 methodHandle selected_method; | |
752 | |
753 assert(recv.is_null() || recv->is_oop(), "receiver is not an oop"); | |
754 | |
755 // runtime method resolution | |
756 if (check_null_and_abstract && recv.is_null()) { // check if receiver exists | |
757 THROW(vmSymbols::java_lang_NullPointerException()); | |
758 } | |
759 | |
760 // Virtual methods cannot be resolved before its klass has been linked, for otherwise the methodOop's | |
761 // has not been rewritten, and the vtable initialized. | |
762 assert(instanceKlass::cast(resolved_method->method_holder())->is_linked(), "must be linked"); | |
763 | |
764 // Virtual methods cannot be resolved before its klass has been linked, for otherwise the methodOop's | |
765 // has not been rewritten, and the vtable initialized. Make sure to do this after the nullcheck, since | |
766 // a missing receiver might result in a bogus lookup. | |
767 assert(instanceKlass::cast(resolved_method->method_holder())->is_linked(), "must be linked"); | |
768 | |
769 // do lookup based on receiver klass using the vtable index | |
770 if (resolved_method->method_holder()->klass_part()->is_interface()) { // miranda method | |
771 vtable_index = vtable_index_of_miranda_method(resolved_klass, | |
772 symbolHandle(THREAD, resolved_method->name()), | |
773 symbolHandle(THREAD, resolved_method->signature()), CHECK); | |
774 assert(vtable_index >= 0 , "we should have valid vtable index at this point"); | |
775 | |
776 instanceKlass* inst = instanceKlass::cast(recv_klass()); | |
777 selected_method = methodHandle(THREAD, inst->method_at_vtable(vtable_index)); | |
778 } else { | |
779 // at this point we are sure that resolved_method is virtual and not | |
780 // a miranda method; therefore, it must have a valid vtable index. | |
781 vtable_index = resolved_method->vtable_index(); | |
782 // We could get a negative vtable_index for final methods, | |
783 // because as an optimization they are they are never put in the vtable, | |
784 // unless they override an existing method. | |
785 // If we do get a negative, it means the resolved method is the the selected | |
786 // method, and it can never be changed by an override. | |
787 if (vtable_index == methodOopDesc::nonvirtual_vtable_index) { | |
788 assert(resolved_method->can_be_statically_bound(), "cannot override this method"); | |
789 selected_method = resolved_method; | |
790 } else { | |
791 // recv_klass might be an arrayKlassOop but all vtables start at | |
792 // the same place. The cast is to avoid virtual call and assertion. | |
793 instanceKlass* inst = (instanceKlass*)recv_klass()->klass_part(); | |
794 selected_method = methodHandle(THREAD, inst->method_at_vtable(vtable_index)); | |
795 } | |
796 } | |
797 | |
798 // check if method exists | |
799 if (selected_method.is_null()) { | |
800 ResourceMark rm(THREAD); | |
801 THROW_MSG(vmSymbols::java_lang_AbstractMethodError(), | |
802 methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()), | |
803 resolved_method->name(), | |
804 resolved_method->signature())); | |
805 } | |
806 | |
807 // check if abstract | |
808 if (check_null_and_abstract && selected_method->is_abstract()) { | |
809 ResourceMark rm(THREAD); | |
810 THROW_MSG(vmSymbols::java_lang_AbstractMethodError(), | |
811 methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()), | |
812 selected_method->name(), | |
813 selected_method->signature())); | |
814 } | |
815 | |
816 // setup result | |
817 result.set_virtual(resolved_klass, recv_klass, resolved_method, selected_method, vtable_index, CHECK); | |
818 } | |
819 | |
820 void LinkResolver::resolve_interface_call(CallInfo& result, Handle recv, KlassHandle recv_klass, KlassHandle resolved_klass, | |
821 symbolHandle method_name, symbolHandle method_signature, KlassHandle current_klass, | |
822 bool check_access, bool check_null_and_abstract, TRAPS) { | |
823 methodHandle resolved_method; | |
824 linktime_resolve_interface_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK); | |
825 runtime_resolve_interface_method(result, resolved_method, resolved_klass, recv, recv_klass, check_null_and_abstract, CHECK); | |
826 } | |
827 | |
828 // throws linktime exceptions | |
829 void LinkResolver::linktime_resolve_interface_method(methodHandle& resolved_method, KlassHandle resolved_klass, symbolHandle method_name, | |
830 symbolHandle method_signature, KlassHandle current_klass, bool check_access, TRAPS) { | |
831 // normal interface method resolution | |
832 resolve_interface_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK); | |
833 | |
834 assert(resolved_method->name() != vmSymbols::object_initializer_name(), "should have been checked in verifier"); | |
835 assert(resolved_method->name() != vmSymbols::class_initializer_name (), "should have been checked in verifier"); | |
836 } | |
837 | |
838 // throws runtime exceptions | |
839 void LinkResolver::runtime_resolve_interface_method(CallInfo& result, methodHandle resolved_method, KlassHandle resolved_klass, | |
840 Handle recv, KlassHandle recv_klass, bool check_null_and_abstract, TRAPS) { | |
841 // check if receiver exists | |
842 if (check_null_and_abstract && recv.is_null()) { | |
843 THROW(vmSymbols::java_lang_NullPointerException()); | |
844 } | |
845 | |
846 // check if receiver klass implements the resolved interface | |
847 if (!recv_klass->is_subtype_of(resolved_klass())) { | |
848 char buf[200]; | |
849 jio_snprintf(buf, sizeof(buf), "Class %s does not implement the requested interface %s", | |
850 (Klass::cast(recv_klass()))->external_name(), | |
851 (Klass::cast(resolved_klass()))->external_name()); | |
852 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); | |
853 } | |
854 // do lookup based on receiver klass | |
855 methodHandle sel_method; | |
856 lookup_instance_method_in_klasses(sel_method, recv_klass, | |
857 symbolHandle(THREAD, resolved_method->name()), | |
858 symbolHandle(THREAD, resolved_method->signature()), CHECK); | |
859 // check if method exists | |
860 if (sel_method.is_null()) { | |
861 ResourceMark rm(THREAD); | |
862 THROW_MSG(vmSymbols::java_lang_AbstractMethodError(), | |
863 methodOopDesc::name_and_sig_as_C_string(Klass::cast(recv_klass()), | |
864 resolved_method->name(), | |
865 resolved_method->signature())); | |
866 } | |
867 // check if public | |
868 if (!sel_method->is_public()) { | |
869 ResourceMark rm(THREAD); | |
870 THROW_MSG(vmSymbols::java_lang_IllegalAccessError(), | |
871 methodOopDesc::name_and_sig_as_C_string(Klass::cast(recv_klass()), | |
872 sel_method->name(), | |
873 sel_method->signature())); | |
874 } | |
875 // check if abstract | |
876 if (check_null_and_abstract && sel_method->is_abstract()) { | |
877 ResourceMark rm(THREAD); | |
878 THROW_MSG(vmSymbols::java_lang_AbstractMethodError(), | |
879 methodOopDesc::name_and_sig_as_C_string(Klass::cast(recv_klass()), | |
880 sel_method->name(), | |
881 sel_method->signature())); | |
882 } | |
883 // setup result | |
884 result.set_interface(resolved_klass, recv_klass, resolved_method, sel_method, CHECK); | |
885 } | |
886 | |
887 | |
888 methodHandle LinkResolver::linktime_resolve_interface_method_or_null( | |
889 KlassHandle resolved_klass, | |
890 symbolHandle method_name, | |
891 symbolHandle method_signature, | |
892 KlassHandle current_klass, | |
893 bool check_access) { | |
894 EXCEPTION_MARK; | |
895 methodHandle method_result; | |
896 linktime_resolve_interface_method(method_result, resolved_klass, method_name, method_signature, current_klass, check_access, THREAD); | |
897 if (HAS_PENDING_EXCEPTION) { | |
898 CLEAR_PENDING_EXCEPTION; | |
899 return methodHandle(); | |
900 } else { | |
901 return method_result; | |
902 } | |
903 } | |
904 | |
905 methodHandle LinkResolver::linktime_resolve_virtual_method_or_null( | |
906 KlassHandle resolved_klass, | |
907 symbolHandle method_name, | |
908 symbolHandle method_signature, | |
909 KlassHandle current_klass, | |
910 bool check_access) { | |
911 EXCEPTION_MARK; | |
912 methodHandle method_result; | |
913 linktime_resolve_virtual_method(method_result, resolved_klass, method_name, method_signature, current_klass, check_access, THREAD); | |
914 if (HAS_PENDING_EXCEPTION) { | |
915 CLEAR_PENDING_EXCEPTION; | |
916 return methodHandle(); | |
917 } else { | |
918 return method_result; | |
919 } | |
920 } | |
921 | |
922 methodHandle LinkResolver::resolve_virtual_call_or_null( | |
923 KlassHandle receiver_klass, | |
924 KlassHandle resolved_klass, | |
925 symbolHandle name, | |
926 symbolHandle signature, | |
927 KlassHandle current_klass) { | |
928 EXCEPTION_MARK; | |
929 CallInfo info; | |
930 resolve_virtual_call(info, Handle(), receiver_klass, resolved_klass, name, signature, current_klass, true, false, THREAD); | |
931 if (HAS_PENDING_EXCEPTION) { | |
932 CLEAR_PENDING_EXCEPTION; | |
933 return methodHandle(); | |
934 } | |
935 return info.selected_method(); | |
936 } | |
937 | |
938 methodHandle LinkResolver::resolve_interface_call_or_null( | |
939 KlassHandle receiver_klass, | |
940 KlassHandle resolved_klass, | |
941 symbolHandle name, | |
942 symbolHandle signature, | |
943 KlassHandle current_klass) { | |
944 EXCEPTION_MARK; | |
945 CallInfo info; | |
946 resolve_interface_call(info, Handle(), receiver_klass, resolved_klass, name, signature, current_klass, true, false, THREAD); | |
947 if (HAS_PENDING_EXCEPTION) { | |
948 CLEAR_PENDING_EXCEPTION; | |
949 return methodHandle(); | |
950 } | |
951 return info.selected_method(); | |
952 } | |
953 | |
954 int LinkResolver::resolve_virtual_vtable_index( | |
955 KlassHandle receiver_klass, | |
956 KlassHandle resolved_klass, | |
957 symbolHandle name, | |
958 symbolHandle signature, | |
959 KlassHandle current_klass) { | |
960 EXCEPTION_MARK; | |
961 CallInfo info; | |
962 resolve_virtual_call(info, Handle(), receiver_klass, resolved_klass, name, signature, current_klass, true, false, THREAD); | |
963 if (HAS_PENDING_EXCEPTION) { | |
964 CLEAR_PENDING_EXCEPTION; | |
965 return methodOopDesc::invalid_vtable_index; | |
966 } | |
967 return info.vtable_index(); | |
968 } | |
969 | |
970 methodHandle LinkResolver::resolve_static_call_or_null( | |
971 KlassHandle resolved_klass, | |
972 symbolHandle name, | |
973 symbolHandle signature, | |
974 KlassHandle current_klass) { | |
975 EXCEPTION_MARK; | |
976 CallInfo info; | |
977 resolve_static_call(info, resolved_klass, name, signature, current_klass, true, false, THREAD); | |
978 if (HAS_PENDING_EXCEPTION) { | |
979 CLEAR_PENDING_EXCEPTION; | |
980 return methodHandle(); | |
981 } | |
982 return info.selected_method(); | |
983 } | |
984 | |
985 methodHandle LinkResolver::resolve_special_call_or_null(KlassHandle resolved_klass, symbolHandle name, symbolHandle signature, | |
986 KlassHandle current_klass) { | |
987 EXCEPTION_MARK; | |
988 CallInfo info; | |
989 resolve_special_call(info, resolved_klass, name, signature, current_klass, true, THREAD); | |
990 if (HAS_PENDING_EXCEPTION) { | |
991 CLEAR_PENDING_EXCEPTION; | |
992 return methodHandle(); | |
993 } | |
994 return info.selected_method(); | |
995 } | |
996 | |
997 | |
998 | |
999 //------------------------------------------------------------------------------------------------------------------------ | |
1000 // ConstantPool entries | |
1001 | |
1002 void LinkResolver::resolve_invoke(CallInfo& result, Handle recv, constantPoolHandle pool, int index, Bytecodes::Code byte, TRAPS) { | |
1003 switch (byte) { | |
1004 case Bytecodes::_invokestatic : resolve_invokestatic (result, pool, index, CHECK); break; | |
1005 case Bytecodes::_invokespecial : resolve_invokespecial (result, pool, index, CHECK); break; | |
1006 case Bytecodes::_invokevirtual : resolve_invokevirtual (result, recv, pool, index, CHECK); break; | |
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1007 case Bytecodes::_invokedynamic : resolve_invokedynamic (result, pool, index, CHECK); break; |
0 | 1008 case Bytecodes::_invokeinterface: resolve_invokeinterface(result, recv, pool, index, CHECK); break; |
1009 } | |
1010 return; | |
1011 } | |
1012 | |
1013 void LinkResolver::resolve_pool(KlassHandle& resolved_klass, symbolHandle& method_name, symbolHandle& method_signature, | |
1014 KlassHandle& current_klass, constantPoolHandle pool, int index, TRAPS) { | |
1015 // resolve klass | |
1016 resolve_klass(resolved_klass, pool, index, CHECK); | |
1017 | |
1018 // Get name, signature, and static klass | |
1019 method_name = symbolHandle(THREAD, pool->name_ref_at(index)); | |
1020 method_signature = symbolHandle(THREAD, pool->signature_ref_at(index)); | |
1021 current_klass = KlassHandle(THREAD, pool->pool_holder()); | |
1022 } | |
1023 | |
1024 | |
1025 void LinkResolver::resolve_invokestatic(CallInfo& result, constantPoolHandle pool, int index, TRAPS) { | |
1026 KlassHandle resolved_klass; | |
1027 symbolHandle method_name; | |
1028 symbolHandle method_signature; | |
1029 KlassHandle current_klass; | |
1030 resolve_pool(resolved_klass, method_name, method_signature, current_klass, pool, index, CHECK); | |
1031 resolve_static_call(result, resolved_klass, method_name, method_signature, current_klass, true, true, CHECK); | |
1032 } | |
1033 | |
1034 | |
1035 void LinkResolver::resolve_invokespecial(CallInfo& result, constantPoolHandle pool, int index, TRAPS) { | |
1036 KlassHandle resolved_klass; | |
1037 symbolHandle method_name; | |
1038 symbolHandle method_signature; | |
1039 KlassHandle current_klass; | |
1040 resolve_pool(resolved_klass, method_name, method_signature, current_klass, pool, index, CHECK); | |
1041 resolve_special_call(result, resolved_klass, method_name, method_signature, current_klass, true, CHECK); | |
1042 } | |
1043 | |
1044 | |
1045 void LinkResolver::resolve_invokevirtual(CallInfo& result, Handle recv, | |
1046 constantPoolHandle pool, int index, | |
1047 TRAPS) { | |
1048 | |
1049 KlassHandle resolved_klass; | |
1050 symbolHandle method_name; | |
1051 symbolHandle method_signature; | |
1052 KlassHandle current_klass; | |
1053 resolve_pool(resolved_klass, method_name, method_signature, current_klass, pool, index, CHECK); | |
1054 KlassHandle recvrKlass (THREAD, recv.is_null() ? (klassOop)NULL : recv->klass()); | |
1055 resolve_virtual_call(result, recv, recvrKlass, resolved_klass, method_name, method_signature, current_klass, true, true, CHECK); | |
1056 } | |
1057 | |
1058 | |
1059 void LinkResolver::resolve_invokeinterface(CallInfo& result, Handle recv, constantPoolHandle pool, int index, TRAPS) { | |
1060 KlassHandle resolved_klass; | |
1061 symbolHandle method_name; | |
1062 symbolHandle method_signature; | |
1063 KlassHandle current_klass; | |
1064 resolve_pool(resolved_klass, method_name, method_signature, current_klass, pool, index, CHECK); | |
1065 KlassHandle recvrKlass (THREAD, recv.is_null() ? (klassOop)NULL : recv->klass()); | |
1066 resolve_interface_call(result, recv, recvrKlass, resolved_klass, method_name, method_signature, current_klass, true, true, CHECK); | |
1067 } | |
1068 | |
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1069 |
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1070 void LinkResolver::resolve_invokedynamic(CallInfo& result, constantPoolHandle pool, int raw_index, TRAPS) { |
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1071 assert(EnableInvokeDynamic, ""); |
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1072 |
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1073 // This guy is reached from InterpreterRuntime::resolve_invokedynamic. |
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1074 |
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1075 // At this point, we only need the signature, and can ignore the name. |
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1076 symbolHandle method_signature(THREAD, pool->signature_ref_at(raw_index)); // raw_index works directly |
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1077 symbolHandle method_name = vmSymbolHandles::invokeExact_name(); |
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1078 KlassHandle resolved_klass = SystemDictionaryHandles::MethodHandle_klass(); |
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1079 |
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1080 // JSR 292: this must be an implicitly generated method MethodHandle.invokeExact(*...) |
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1081 // The extra MH receiver will be inserted into the stack on every call. |
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1082 methodHandle resolved_method; |
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1083 KlassHandle current_klass(THREAD, pool->pool_holder()); |
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1084 lookup_implicit_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, CHECK); |
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1085 if (resolved_method.is_null()) { |
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1086 THROW(vmSymbols::java_lang_InternalError()); |
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1087 } |
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1088 result.set_dynamic(resolved_method, CHECK); |
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1089 } |
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1090 |
0 | 1091 //------------------------------------------------------------------------------------------------------------------------ |
1092 #ifndef PRODUCT | |
1093 | |
1094 void FieldAccessInfo::print() { | |
1095 ResourceMark rm; | |
1096 tty->print_cr("Field %s@%d", name()->as_C_string(), field_offset()); | |
1097 } | |
1098 | |
1099 #endif |