Mercurial > hg > truffle
annotate src/share/vm/interpreter/linkResolver.cpp @ 6271:93c71eb28866
7188911: nightly failures after JSR 292 lazy method handle update (round 2)
Reviewed-by: kvn, jrose
author | twisti |
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date | Tue, 07 Aug 2012 14:32:08 -0700 |
parents | 1d7922586cf6 |
children | da91efe96a93 |
rev | line source |
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0 | 1 /* |
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2 * Copyright (c) 1997, 2011, 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 "classfile/systemDictionary.hpp" | |
27 #include "classfile/vmSymbols.hpp" | |
28 #include "compiler/compileBroker.hpp" | |
29 #include "gc_interface/collectedHeap.inline.hpp" | |
30 #include "interpreter/bytecode.hpp" | |
31 #include "interpreter/interpreterRuntime.hpp" | |
32 #include "interpreter/linkResolver.hpp" | |
33 #include "memory/resourceArea.hpp" | |
34 #include "memory/universe.inline.hpp" | |
35 #include "oops/instanceKlass.hpp" | |
36 #include "oops/objArrayOop.hpp" | |
37 #include "prims/methodHandles.hpp" | |
38 #include "prims/nativeLookup.hpp" | |
39 #include "runtime/compilationPolicy.hpp" | |
40 #include "runtime/fieldDescriptor.hpp" | |
41 #include "runtime/frame.inline.hpp" | |
42 #include "runtime/handles.inline.hpp" | |
43 #include "runtime/reflection.hpp" | |
44 #include "runtime/signature.hpp" | |
45 #include "runtime/vmThread.hpp" | |
46 #ifdef TARGET_OS_FAMILY_linux | |
47 # include "thread_linux.inline.hpp" | |
48 #endif | |
49 #ifdef TARGET_OS_FAMILY_solaris | |
50 # include "thread_solaris.inline.hpp" | |
51 #endif | |
52 #ifdef TARGET_OS_FAMILY_windows | |
53 # include "thread_windows.inline.hpp" | |
54 #endif | |
3960 | 55 #ifdef TARGET_OS_FAMILY_bsd |
56 # include "thread_bsd.inline.hpp" | |
57 #endif | |
0 | 58 |
59 //------------------------------------------------------------------------------------------------------------------------ | |
60 // Implementation of FieldAccessInfo | |
61 | |
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62 void FieldAccessInfo::set(KlassHandle klass, Symbol* name, int field_index, int field_offset, |
0 | 63 BasicType field_type, AccessFlags access_flags) { |
64 _klass = klass; | |
65 _name = name; | |
66 _field_index = field_index; | |
67 _field_offset = field_offset; | |
68 _field_type = field_type; | |
69 _access_flags = access_flags; | |
70 } | |
71 | |
72 | |
73 //------------------------------------------------------------------------------------------------------------------------ | |
74 // Implementation of CallInfo | |
75 | |
76 | |
77 void CallInfo::set_static(KlassHandle resolved_klass, methodHandle resolved_method, TRAPS) { | |
78 int vtable_index = methodOopDesc::nonvirtual_vtable_index; | |
79 set_common(resolved_klass, resolved_klass, resolved_method, resolved_method, vtable_index, CHECK); | |
80 } | |
81 | |
82 | |
83 void CallInfo::set_interface(KlassHandle resolved_klass, KlassHandle selected_klass, methodHandle resolved_method, methodHandle selected_method, TRAPS) { | |
84 // This is only called for interface methods. If the resolved_method | |
85 // comes from java/lang/Object, it can be the subject of a virtual call, so | |
86 // we should pick the vtable index from the resolved method. | |
87 // Other than that case, there is no valid vtable index to specify. | |
88 int vtable_index = methodOopDesc::invalid_vtable_index; | |
1142 | 89 if (resolved_method->method_holder() == SystemDictionary::Object_klass()) { |
0 | 90 assert(resolved_method->vtable_index() == selected_method->vtable_index(), "sanity check"); |
91 vtable_index = resolved_method->vtable_index(); | |
92 } | |
93 set_common(resolved_klass, selected_klass, resolved_method, selected_method, vtable_index, CHECK); | |
94 } | |
95 | |
96 void CallInfo::set_virtual(KlassHandle resolved_klass, KlassHandle selected_klass, methodHandle resolved_method, methodHandle selected_method, int vtable_index, TRAPS) { | |
97 assert(vtable_index >= 0 || vtable_index == methodOopDesc::nonvirtual_vtable_index, "valid index"); | |
98 set_common(resolved_klass, selected_klass, resolved_method, selected_method, vtable_index, CHECK); | |
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99 assert(!resolved_method->is_compiled_lambda_form(), "these must be handled via an invokehandle call"); |
0 | 100 } |
101 | |
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102 void CallInfo::set_handle(methodHandle resolved_method, Handle resolved_appendix, TRAPS) { |
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103 if (resolved_method.is_null()) { |
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104 THROW_MSG(vmSymbols::java_lang_InternalError(), "resolved method is null"); |
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105 } |
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106 KlassHandle resolved_klass = SystemDictionaryHandles::MethodHandle_klass(); |
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107 assert(resolved_method->intrinsic_id() == vmIntrinsics::_invokeBasic || |
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108 resolved_method->is_compiled_lambda_form(), |
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109 "linkMethod must return one of these"); |
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110 int vtable_index = methodOopDesc::nonvirtual_vtable_index; |
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111 assert(resolved_method->vtable_index() == vtable_index, ""); |
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112 set_common(resolved_klass, resolved_klass, resolved_method, resolved_method, vtable_index, CHECK); |
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113 _resolved_appendix = resolved_appendix; |
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114 } |
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115 |
0 | 116 void CallInfo::set_common(KlassHandle resolved_klass, KlassHandle selected_klass, methodHandle resolved_method, methodHandle selected_method, int vtable_index, TRAPS) { |
117 assert(resolved_method->signature() == selected_method->signature(), "signatures must correspond"); | |
118 _resolved_klass = resolved_klass; | |
119 _selected_klass = selected_klass; | |
120 _resolved_method = resolved_method; | |
121 _selected_method = selected_method; | |
122 _vtable_index = vtable_index; | |
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123 _resolved_appendix = Handle(); |
1783 | 124 if (CompilationPolicy::must_be_compiled(selected_method)) { |
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125 // This path is unusual, mostly used by the '-Xcomp' stress test mode. |
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126 |
1783 | 127 // Note: with several active threads, the must_be_compiled may be true |
128 // while can_be_compiled is false; remove assert | |
129 // assert(CompilationPolicy::can_be_compiled(selected_method), "cannot compile"); | |
0 | 130 if (THREAD->is_Compiler_thread()) { |
131 // don't force compilation, resolve was on behalf of compiler | |
132 return; | |
133 } | |
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134 if (instanceKlass::cast(selected_method->method_holder())->is_not_initialized()) { |
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135 // 'is_not_initialized' means not only '!is_initialized', but also that |
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136 // initialization has not been started yet ('!being_initialized') |
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137 // Do not force compilation of methods in uninitialized classes. |
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138 // Note that doing this would throw an assert later, |
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139 // in CompileBroker::compile_method. |
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140 // We sometimes use the link resolver to do reflective lookups |
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141 // even before classes are initialized. |
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142 return; |
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143 } |
0 | 144 CompileBroker::compile_method(selected_method, InvocationEntryBci, |
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145 CompilationPolicy::policy()->initial_compile_level(), |
1783 | 146 methodHandle(), 0, "must_be_compiled", CHECK); |
0 | 147 } |
148 } | |
149 | |
150 | |
151 //------------------------------------------------------------------------------------------------------------------------ | |
152 // Klass resolution | |
153 | |
154 void LinkResolver::check_klass_accessability(KlassHandle ref_klass, KlassHandle sel_klass, TRAPS) { | |
155 if (!Reflection::verify_class_access(ref_klass->as_klassOop(), | |
156 sel_klass->as_klassOop(), | |
157 true)) { | |
158 ResourceMark rm(THREAD); | |
159 Exceptions::fthrow( | |
160 THREAD_AND_LOCATION, | |
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161 vmSymbols::java_lang_IllegalAccessError(), |
0 | 162 "tried to access class %s from class %s", |
163 sel_klass->external_name(), | |
164 ref_klass->external_name() | |
165 ); | |
166 return; | |
167 } | |
168 } | |
169 | |
170 void LinkResolver::resolve_klass(KlassHandle& result, constantPoolHandle pool, int index, TRAPS) { | |
171 klassOop result_oop = pool->klass_ref_at(index, CHECK); | |
172 result = KlassHandle(THREAD, result_oop); | |
173 } | |
174 | |
175 void LinkResolver::resolve_klass_no_update(KlassHandle& result, constantPoolHandle pool, int index, TRAPS) { | |
176 klassOop result_oop = | |
177 constantPoolOopDesc::klass_ref_at_if_loaded_check(pool, index, CHECK); | |
178 result = KlassHandle(THREAD, result_oop); | |
179 } | |
180 | |
181 | |
182 //------------------------------------------------------------------------------------------------------------------------ | |
183 // Method resolution | |
184 // | |
185 // According to JVM spec. $5.4.3c & $5.4.3d | |
186 | |
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187 void LinkResolver::lookup_method_in_klasses(methodHandle& result, KlassHandle klass, Symbol* name, Symbol* signature, TRAPS) { |
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188 methodOop result_oop = klass->uncached_lookup_method(name, signature); |
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189 if (EnableInvokeDynamic && result_oop != NULL) { |
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190 vmIntrinsics::ID iid = result_oop->intrinsic_id(); |
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191 if (MethodHandles::is_signature_polymorphic(iid)) { |
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192 // Do not link directly to these. The VM must produce a synthetic one using lookup_polymorphic_method. |
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193 return; |
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194 } |
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195 } |
0 | 196 result = methodHandle(THREAD, result_oop); |
197 } | |
198 | |
199 // returns first instance method | |
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200 void LinkResolver::lookup_instance_method_in_klasses(methodHandle& result, KlassHandle klass, Symbol* name, Symbol* signature, TRAPS) { |
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201 methodOop result_oop = klass->uncached_lookup_method(name, signature); |
0 | 202 result = methodHandle(THREAD, result_oop); |
203 while (!result.is_null() && result->is_static()) { | |
204 klass = KlassHandle(THREAD, Klass::cast(result->method_holder())->super()); | |
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205 result = methodHandle(THREAD, klass->uncached_lookup_method(name, signature)); |
0 | 206 } |
207 } | |
208 | |
209 | |
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210 int LinkResolver::vtable_index_of_miranda_method(KlassHandle klass, Symbol* name, Symbol* signature, TRAPS) { |
0 | 211 ResourceMark rm(THREAD); |
212 klassVtable *vt = instanceKlass::cast(klass())->vtable(); | |
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213 return vt->index_of_miranda(name, signature); |
0 | 214 } |
215 | |
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216 void LinkResolver::lookup_method_in_interfaces(methodHandle& result, KlassHandle klass, Symbol* name, Symbol* signature, TRAPS) { |
0 | 217 instanceKlass *ik = instanceKlass::cast(klass()); |
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218 result = methodHandle(THREAD, ik->lookup_method_in_all_interfaces(name, signature)); |
0 | 219 } |
220 | |
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221 void LinkResolver::lookup_polymorphic_method(methodHandle& result, |
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222 KlassHandle klass, Symbol* name, Symbol* full_signature, |
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223 KlassHandle current_klass, |
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224 Handle* appendix_result_or_null, |
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225 TRAPS) { |
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226 vmIntrinsics::ID iid = MethodHandles::signature_polymorphic_name_id(name); |
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227 if (TraceMethodHandles) { |
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228 tty->print_cr("lookup_polymorphic_method iid=%s %s.%s%s", |
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229 vmIntrinsics::name_at(iid), klass->external_name(), |
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230 name->as_C_string(), full_signature->as_C_string()); |
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231 } |
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232 if (EnableInvokeDynamic && |
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233 klass() == SystemDictionary::MethodHandle_klass() && |
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234 iid != vmIntrinsics::_none) { |
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235 if (MethodHandles::is_signature_polymorphic_intrinsic(iid)) { |
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236 // Most of these do not need an up-call to Java to resolve, so can be done anywhere. |
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237 // Do not erase last argument type (MemberName) if it is a static linkTo method. |
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238 bool keep_last_arg = MethodHandles::is_signature_polymorphic_static(iid); |
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239 TempNewSymbol basic_signature = |
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240 MethodHandles::lookup_basic_type_signature(full_signature, keep_last_arg, CHECK); |
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241 if (TraceMethodHandles) { |
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242 tty->print_cr("lookup_polymorphic_method %s %s => basic %s", |
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243 name->as_C_string(), |
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244 full_signature->as_C_string(), |
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245 basic_signature->as_C_string()); |
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246 } |
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247 result = SystemDictionary::find_method_handle_intrinsic(iid, |
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248 basic_signature, |
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249 CHECK); |
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250 if (result.not_null()) { |
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251 assert(result->is_method_handle_intrinsic(), "MH.invokeBasic or MH.linkTo* intrinsic"); |
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252 assert(result->intrinsic_id() != vmIntrinsics::_invokeGeneric, "wrong place to find this"); |
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253 assert(basic_signature == result->signature(), "predict the result signature"); |
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254 if (TraceMethodHandles) { |
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255 tty->print("lookup_polymorphic_method => intrinsic "); |
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256 result->print_on(tty); |
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257 } |
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258 return; |
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259 } |
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260 } else if (iid == vmIntrinsics::_invokeGeneric |
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261 && !THREAD->is_Compiler_thread() |
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262 && appendix_result_or_null != NULL) { |
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263 // This is a method with type-checking semantics. |
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264 // We will ask Java code to spin an adapter method for it. |
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265 if (!MethodHandles::enabled()) { |
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266 // Make sure the Java part of the runtime has been booted up. |
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267 klassOop natives = SystemDictionary::MethodHandleNatives_klass(); |
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268 if (natives == NULL || instanceKlass::cast(natives)->is_not_initialized()) { |
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269 SystemDictionary::resolve_or_fail(vmSymbols::java_lang_invoke_MethodHandleNatives(), |
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270 Handle(), |
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271 Handle(), |
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272 true, |
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273 CHECK); |
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274 } |
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275 } |
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276 |
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277 Handle appendix; |
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278 result = SystemDictionary::find_method_handle_invoker(name, |
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279 full_signature, |
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280 current_klass, |
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281 &appendix, |
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282 CHECK); |
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283 if (TraceMethodHandles) { |
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284 tty->print("lookup_polymorphic_method => (via Java) "); |
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285 result->print_on(tty); |
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286 tty->print(" lookup_polymorphic_method => appendix = "); |
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287 if (appendix.is_null()) tty->print_cr("(none)"); |
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288 else appendix->print_on(tty); |
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289 } |
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290 if (result.not_null()) { |
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291 #ifdef ASSERT |
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292 TempNewSymbol basic_signature = |
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293 MethodHandles::lookup_basic_type_signature(full_signature, CHECK); |
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294 int actual_size_of_params = result->size_of_parameters(); |
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295 int expected_size_of_params = ArgumentSizeComputer(basic_signature).size(); |
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296 // +1 for MethodHandle.this, +1 for trailing MethodType |
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297 if (!MethodHandles::is_signature_polymorphic_static(iid)) expected_size_of_params += 1; |
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298 if (appendix.not_null()) expected_size_of_params += 1; |
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299 if (actual_size_of_params != expected_size_of_params) { |
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300 tty->print_cr("*** basic_signature=%s", basic_signature->as_C_string()); |
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301 tty->print_cr("*** result for %s: ", vmIntrinsics::name_at(iid)); |
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302 result->print(); |
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303 } |
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304 assert(actual_size_of_params == expected_size_of_params, |
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305 err_msg("%d != %d", actual_size_of_params, expected_size_of_params)); |
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306 #endif //ASSERT |
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307 |
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308 assert(appendix_result_or_null != NULL, ""); |
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309 (*appendix_result_or_null) = appendix; |
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310 return; |
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311 } |
710 | 312 } |
313 } | |
314 } | |
315 | |
0 | 316 void LinkResolver::check_method_accessability(KlassHandle ref_klass, |
317 KlassHandle resolved_klass, | |
318 KlassHandle sel_klass, | |
319 methodHandle sel_method, | |
320 TRAPS) { | |
321 | |
322 AccessFlags flags = sel_method->access_flags(); | |
323 | |
324 // Special case: arrays always override "clone". JVMS 2.15. | |
325 // If the resolved klass is an array class, and the declaring class | |
326 // is java.lang.Object and the method is "clone", set the flags | |
327 // to public. | |
328 // | |
329 // We'll check for the method name first, as that's most likely | |
330 // to be false (so we'll short-circuit out of these tests). | |
331 if (sel_method->name() == vmSymbols::clone_name() && | |
1142 | 332 sel_klass() == SystemDictionary::Object_klass() && |
0 | 333 resolved_klass->oop_is_array()) { |
334 // We need to change "protected" to "public". | |
335 assert(flags.is_protected(), "clone not protected?"); | |
336 jint new_flags = flags.as_int(); | |
337 new_flags = new_flags & (~JVM_ACC_PROTECTED); | |
338 new_flags = new_flags | JVM_ACC_PUBLIC; | |
339 flags.set_flags(new_flags); | |
340 } | |
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341 // assert(extra_arg_result_or_null != NULL, "must be able to return extra argument"); |
0 | 342 |
343 if (!Reflection::verify_field_access(ref_klass->as_klassOop(), | |
344 resolved_klass->as_klassOop(), | |
345 sel_klass->as_klassOop(), | |
346 flags, | |
347 true)) { | |
348 ResourceMark rm(THREAD); | |
349 Exceptions::fthrow( | |
350 THREAD_AND_LOCATION, | |
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351 vmSymbols::java_lang_IllegalAccessError(), |
0 | 352 "tried to access method %s.%s%s from class %s", |
353 sel_klass->external_name(), | |
354 sel_method->name()->as_C_string(), | |
355 sel_method->signature()->as_C_string(), | |
356 ref_klass->external_name() | |
357 ); | |
358 return; | |
359 } | |
360 } | |
361 | |
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362 void LinkResolver::resolve_method_statically(methodHandle& resolved_method, KlassHandle& resolved_klass, |
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363 Bytecodes::Code code, constantPoolHandle pool, int index, TRAPS) { |
0 | 364 |
365 // resolve klass | |
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366 if (code == Bytecodes::_invokedynamic) { |
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367 resolved_klass = SystemDictionaryHandles::MethodHandle_klass(); |
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368 Symbol* method_name = vmSymbols::invoke_name(); |
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369 Symbol* method_signature = pool->signature_ref_at(index); |
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370 KlassHandle current_klass(THREAD, pool->pool_holder()); |
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371 resolve_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, true, CHECK); |
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372 return; |
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373 } |
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374 |
0 | 375 resolve_klass(resolved_klass, pool, index, CHECK); |
376 | |
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377 Symbol* method_name = pool->name_ref_at(index); |
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378 Symbol* method_signature = pool->signature_ref_at(index); |
0 | 379 KlassHandle current_klass(THREAD, pool->pool_holder()); |
380 | |
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381 if (pool->has_preresolution() |
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382 || (resolved_klass() == SystemDictionary::MethodHandle_klass() && |
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383 MethodHandles::is_signature_polymorphic_name(resolved_klass(), method_name))) { |
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384 methodOop result_oop = constantPoolOopDesc::method_at_if_loaded(pool, index); |
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385 if (result_oop != NULL) { |
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386 resolved_method = methodHandle(THREAD, result_oop); |
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387 return; |
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388 } |
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389 } |
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390 |
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391 if (code == Bytecodes::_invokeinterface) { |
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392 resolve_interface_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, true, CHECK); |
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393 } else { |
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394 resolve_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, true, CHECK); |
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395 } |
0 | 396 } |
397 | |
398 void LinkResolver::resolve_method(methodHandle& resolved_method, KlassHandle resolved_klass, | |
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399 Symbol* method_name, Symbol* method_signature, |
0 | 400 KlassHandle current_klass, bool check_access, TRAPS) { |
401 | |
402 // 1. check if klass is not interface | |
403 if (resolved_klass->is_interface()) { | |
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404 ResourceMark rm(THREAD); |
0 | 405 char buf[200]; |
406 jio_snprintf(buf, sizeof(buf), "Found interface %s, but class was expected", Klass::cast(resolved_klass())->external_name()); | |
407 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); | |
408 } | |
409 | |
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410 Handle nested_exception; |
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411 |
0 | 412 // 2. lookup method in resolved klass and its super klasses |
413 lookup_method_in_klasses(resolved_method, resolved_klass, method_name, method_signature, CHECK); | |
414 | |
415 if (resolved_method.is_null()) { // not found in the class hierarchy | |
416 // 3. lookup method in all the interfaces implemented by the resolved klass | |
417 lookup_method_in_interfaces(resolved_method, resolved_klass, method_name, method_signature, CHECK); | |
418 | |
419 if (resolved_method.is_null()) { | |
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420 // JSR 292: see if this is an implicitly generated method MethodHandle.linkToVirtual(*...), etc |
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421 lookup_polymorphic_method(resolved_method, resolved_klass, method_name, method_signature, |
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422 current_klass, (Handle*)NULL, THREAD); |
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423 if (HAS_PENDING_EXCEPTION) { |
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424 nested_exception = Handle(THREAD, PENDING_EXCEPTION); |
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425 CLEAR_PENDING_EXCEPTION; |
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426 } |
710 | 427 } |
428 | |
429 if (resolved_method.is_null()) { | |
0 | 430 // 4. method lookup failed |
431 ResourceMark rm(THREAD); | |
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432 THROW_MSG_CAUSE(vmSymbols::java_lang_NoSuchMethodError(), |
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433 methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()), |
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434 method_name, |
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435 method_signature), |
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436 nested_exception); |
0 | 437 } |
438 } | |
439 | |
440 // 5. check if method is concrete | |
441 if (resolved_method->is_abstract() && !resolved_klass->is_abstract()) { | |
442 ResourceMark rm(THREAD); | |
443 THROW_MSG(vmSymbols::java_lang_AbstractMethodError(), | |
444 methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()), | |
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445 method_name, |
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446 method_signature)); |
0 | 447 } |
448 | |
449 // 6. access checks, access checking may be turned off when calling from within the VM. | |
450 if (check_access) { | |
451 assert(current_klass.not_null() , "current_klass should not be null"); | |
452 | |
453 // check if method can be accessed by the referring class | |
454 check_method_accessability(current_klass, | |
455 resolved_klass, | |
456 KlassHandle(THREAD, resolved_method->method_holder()), | |
457 resolved_method, | |
458 CHECK); | |
459 | |
460 // check loader constraints | |
461 Handle loader (THREAD, instanceKlass::cast(current_klass())->class_loader()); | |
462 Handle class_loader (THREAD, instanceKlass::cast(resolved_method->method_holder())->class_loader()); | |
463 { | |
464 ResourceMark rm(THREAD); | |
465 char* failed_type_name = | |
466 SystemDictionary::check_signature_loaders(method_signature, loader, | |
467 class_loader, true, CHECK); | |
468 if (failed_type_name != NULL) { | |
469 const char* msg = "loader constraint violation: when resolving method" | |
470 " \"%s\" the class loader (instance of %s) of the current class, %s," | |
471 " and the class loader (instance of %s) for resolved class, %s, have" | |
472 " different Class objects for the type %s used in the signature"; | |
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473 char* sig = methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()),method_name,method_signature); |
0 | 474 const char* loader1 = SystemDictionary::loader_name(loader()); |
475 char* current = instanceKlass::cast(current_klass())->name()->as_C_string(); | |
476 const char* loader2 = SystemDictionary::loader_name(class_loader()); | |
477 char* resolved = instanceKlass::cast(resolved_klass())->name()->as_C_string(); | |
478 size_t buflen = strlen(msg) + strlen(sig) + strlen(loader1) + | |
479 strlen(current) + strlen(loader2) + strlen(resolved) + | |
480 strlen(failed_type_name); | |
481 char* buf = NEW_RESOURCE_ARRAY_IN_THREAD(THREAD, char, buflen); | |
482 jio_snprintf(buf, buflen, msg, sig, loader1, current, loader2, | |
483 resolved, failed_type_name); | |
484 THROW_MSG(vmSymbols::java_lang_LinkageError(), buf); | |
485 } | |
486 } | |
487 } | |
488 } | |
489 | |
490 void LinkResolver::resolve_interface_method(methodHandle& resolved_method, | |
491 KlassHandle resolved_klass, | |
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492 Symbol* method_name, |
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493 Symbol* method_signature, |
0 | 494 KlassHandle current_klass, |
495 bool check_access, TRAPS) { | |
496 | |
497 // check if klass is interface | |
498 if (!resolved_klass->is_interface()) { | |
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499 ResourceMark rm(THREAD); |
0 | 500 char buf[200]; |
501 jio_snprintf(buf, sizeof(buf), "Found class %s, but interface was expected", Klass::cast(resolved_klass())->external_name()); | |
502 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); | |
503 } | |
504 | |
505 // lookup method in this interface or its super, java.lang.Object | |
506 lookup_instance_method_in_klasses(resolved_method, resolved_klass, method_name, method_signature, CHECK); | |
507 | |
508 if (resolved_method.is_null()) { | |
509 // lookup method in all the super-interfaces | |
510 lookup_method_in_interfaces(resolved_method, resolved_klass, method_name, method_signature, CHECK); | |
511 if (resolved_method.is_null()) { | |
512 // no method found | |
513 ResourceMark rm(THREAD); | |
514 THROW_MSG(vmSymbols::java_lang_NoSuchMethodError(), | |
515 methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()), | |
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516 method_name, |
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517 method_signature)); |
0 | 518 } |
519 } | |
520 | |
521 if (check_access) { | |
522 HandleMark hm(THREAD); | |
523 Handle loader (THREAD, instanceKlass::cast(current_klass())->class_loader()); | |
524 Handle class_loader (THREAD, instanceKlass::cast(resolved_method->method_holder())->class_loader()); | |
525 { | |
526 ResourceMark rm(THREAD); | |
527 char* failed_type_name = | |
528 SystemDictionary::check_signature_loaders(method_signature, loader, | |
529 class_loader, true, CHECK); | |
530 if (failed_type_name != NULL) { | |
531 const char* msg = "loader constraint violation: when resolving " | |
532 "interface method \"%s\" the class loader (instance of %s) of the " | |
533 "current class, %s, and the class loader (instance of %s) for " | |
534 "resolved class, %s, have different Class objects for the type %s " | |
535 "used in the signature"; | |
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536 char* sig = methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()),method_name,method_signature); |
0 | 537 const char* loader1 = SystemDictionary::loader_name(loader()); |
538 char* current = instanceKlass::cast(current_klass())->name()->as_C_string(); | |
539 const char* loader2 = SystemDictionary::loader_name(class_loader()); | |
540 char* resolved = instanceKlass::cast(resolved_klass())->name()->as_C_string(); | |
541 size_t buflen = strlen(msg) + strlen(sig) + strlen(loader1) + | |
542 strlen(current) + strlen(loader2) + strlen(resolved) + | |
543 strlen(failed_type_name); | |
544 char* buf = NEW_RESOURCE_ARRAY_IN_THREAD(THREAD, char, buflen); | |
545 jio_snprintf(buf, buflen, msg, sig, loader1, current, loader2, | |
546 resolved, failed_type_name); | |
547 THROW_MSG(vmSymbols::java_lang_LinkageError(), buf); | |
548 } | |
549 } | |
550 } | |
551 } | |
552 | |
553 //------------------------------------------------------------------------------------------------------------------------ | |
554 // Field resolution | |
555 | |
556 void LinkResolver::check_field_accessability(KlassHandle ref_klass, | |
557 KlassHandle resolved_klass, | |
558 KlassHandle sel_klass, | |
559 fieldDescriptor& fd, | |
560 TRAPS) { | |
561 if (!Reflection::verify_field_access(ref_klass->as_klassOop(), | |
562 resolved_klass->as_klassOop(), | |
563 sel_klass->as_klassOop(), | |
564 fd.access_flags(), | |
565 true)) { | |
566 ResourceMark rm(THREAD); | |
567 Exceptions::fthrow( | |
568 THREAD_AND_LOCATION, | |
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569 vmSymbols::java_lang_IllegalAccessError(), |
0 | 570 "tried to access field %s.%s from class %s", |
571 sel_klass->external_name(), | |
572 fd.name()->as_C_string(), | |
573 ref_klass->external_name() | |
574 ); | |
575 return; | |
576 } | |
577 } | |
578 | |
579 void LinkResolver::resolve_field(FieldAccessInfo& result, constantPoolHandle pool, int index, Bytecodes::Code byte, bool check_only, TRAPS) { | |
580 resolve_field(result, pool, index, byte, check_only, true, CHECK); | |
581 } | |
582 | |
583 void LinkResolver::resolve_field(FieldAccessInfo& result, constantPoolHandle pool, int index, Bytecodes::Code byte, bool check_only, bool update_pool, TRAPS) { | |
584 assert(byte == Bytecodes::_getstatic || byte == Bytecodes::_putstatic || | |
585 byte == Bytecodes::_getfield || byte == Bytecodes::_putfield, "bad bytecode"); | |
586 | |
587 bool is_static = (byte == Bytecodes::_getstatic || byte == Bytecodes::_putstatic); | |
588 bool is_put = (byte == Bytecodes::_putfield || byte == Bytecodes::_putstatic); | |
589 | |
590 // resolve specified klass | |
591 KlassHandle resolved_klass; | |
592 if (update_pool) { | |
593 resolve_klass(resolved_klass, pool, index, CHECK); | |
594 } else { | |
595 resolve_klass_no_update(resolved_klass, pool, index, CHECK); | |
596 } | |
597 // Load these early in case the resolve of the containing klass fails | |
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598 Symbol* field = pool->name_ref_at(index); |
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599 Symbol* sig = pool->signature_ref_at(index); |
0 | 600 // Check if there's a resolved klass containing the field |
601 if( resolved_klass.is_null() ) { | |
602 ResourceMark rm(THREAD); | |
603 THROW_MSG(vmSymbols::java_lang_NoSuchFieldError(), field->as_C_string()); | |
604 } | |
605 | |
606 // Resolve instance field | |
607 fieldDescriptor fd; // find_field initializes fd if found | |
608 KlassHandle sel_klass(THREAD, instanceKlass::cast(resolved_klass())->find_field(field, sig, &fd)); | |
609 // check if field exists; i.e., if a klass containing the field def has been selected | |
610 if (sel_klass.is_null()){ | |
611 ResourceMark rm(THREAD); | |
612 THROW_MSG(vmSymbols::java_lang_NoSuchFieldError(), field->as_C_string()); | |
613 } | |
614 | |
615 // check access | |
616 KlassHandle ref_klass(THREAD, pool->pool_holder()); | |
617 check_field_accessability(ref_klass, resolved_klass, sel_klass, fd, CHECK); | |
618 | |
619 // check for errors | |
620 if (is_static != fd.is_static()) { | |
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621 ResourceMark rm(THREAD); |
0 | 622 char msg[200]; |
623 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()); | |
624 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), msg); | |
625 } | |
626 | |
627 // Final fields can only be accessed from its own class. | |
628 if (is_put && fd.access_flags().is_final() && sel_klass() != pool->pool_holder()) { | |
629 THROW(vmSymbols::java_lang_IllegalAccessError()); | |
630 } | |
631 | |
632 // initialize resolved_klass if necessary | |
633 // note 1: the klass which declared the field must be initialized (i.e, sel_klass) | |
634 // according to the newest JVM spec (5.5, p.170) - was bug (gri 7/28/99) | |
635 // | |
636 // note 2: we don't want to force initialization if we are just checking | |
637 // if the field access is legal; e.g., during compilation | |
638 if (is_static && !check_only) { | |
639 sel_klass->initialize(CHECK); | |
640 } | |
641 | |
642 { | |
643 HandleMark hm(THREAD); | |
644 Handle ref_loader (THREAD, instanceKlass::cast(ref_klass())->class_loader()); | |
645 Handle sel_loader (THREAD, instanceKlass::cast(sel_klass())->class_loader()); | |
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646 Symbol* signature_ref = pool->signature_ref_at(index); |
0 | 647 { |
648 ResourceMark rm(THREAD); | |
649 char* failed_type_name = | |
650 SystemDictionary::check_signature_loaders(signature_ref, | |
651 ref_loader, sel_loader, | |
652 false, | |
653 CHECK); | |
654 if (failed_type_name != NULL) { | |
655 const char* msg = "loader constraint violation: when resolving field" | |
656 " \"%s\" the class loader (instance of %s) of the referring class, " | |
657 "%s, and the class loader (instance of %s) for the field's resolved " | |
658 "type, %s, have different Class objects for that type"; | |
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659 char* field_name = field->as_C_string(); |
0 | 660 const char* loader1 = SystemDictionary::loader_name(ref_loader()); |
661 char* sel = instanceKlass::cast(sel_klass())->name()->as_C_string(); | |
662 const char* loader2 = SystemDictionary::loader_name(sel_loader()); | |
663 size_t buflen = strlen(msg) + strlen(field_name) + strlen(loader1) + | |
664 strlen(sel) + strlen(loader2) + strlen(failed_type_name); | |
665 char* buf = NEW_RESOURCE_ARRAY_IN_THREAD(THREAD, char, buflen); | |
666 jio_snprintf(buf, buflen, msg, field_name, loader1, sel, loader2, | |
667 failed_type_name); | |
668 THROW_MSG(vmSymbols::java_lang_LinkageError(), buf); | |
669 } | |
670 } | |
671 } | |
672 | |
673 // return information. note that the klass is set to the actual klass containing the | |
674 // field, otherwise access of static fields in superclasses will not work. | |
675 KlassHandle holder (THREAD, fd.field_holder()); | |
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676 Symbol* name = fd.name(); |
0 | 677 result.set(holder, name, fd.index(), fd.offset(), fd.field_type(), fd.access_flags()); |
678 } | |
679 | |
680 | |
681 //------------------------------------------------------------------------------------------------------------------------ | |
682 // Invoke resolution | |
683 // | |
684 // Naming conventions: | |
685 // | |
686 // resolved_method the specified method (i.e., static receiver specified via constant pool index) | |
687 // sel_method the selected method (selected via run-time lookup; e.g., based on dynamic receiver class) | |
688 // resolved_klass the specified klass (i.e., specified via constant pool index) | |
689 // recv_klass the receiver klass | |
690 | |
691 | |
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692 void LinkResolver::resolve_static_call(CallInfo& result, KlassHandle& resolved_klass, Symbol* method_name, |
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693 Symbol* method_signature, KlassHandle current_klass, |
0 | 694 bool check_access, bool initialize_class, TRAPS) { |
695 methodHandle resolved_method; | |
696 linktime_resolve_static_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK); | |
697 resolved_klass = KlassHandle(THREAD, Klass::cast(resolved_method->method_holder())); | |
698 | |
699 // Initialize klass (this should only happen if everything is ok) | |
700 if (initialize_class && resolved_klass->should_be_initialized()) { | |
701 resolved_klass->initialize(CHECK); | |
702 linktime_resolve_static_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK); | |
703 } | |
704 | |
705 // setup result | |
706 result.set_static(resolved_klass, resolved_method, CHECK); | |
707 } | |
708 | |
709 // throws linktime exceptions | |
710 void LinkResolver::linktime_resolve_static_method(methodHandle& resolved_method, KlassHandle resolved_klass, | |
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711 Symbol* method_name, Symbol* method_signature, |
0 | 712 KlassHandle current_klass, bool check_access, TRAPS) { |
713 | |
714 resolve_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK); | |
715 assert(resolved_method->name() != vmSymbols::class_initializer_name(), "should have been checked in verifier"); | |
716 | |
717 // check if static | |
718 if (!resolved_method->is_static()) { | |
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719 ResourceMark rm(THREAD); |
0 | 720 char buf[200]; |
721 jio_snprintf(buf, sizeof(buf), "Expected static method %s", methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()), | |
722 resolved_method->name(), | |
723 resolved_method->signature())); | |
724 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); | |
725 } | |
726 } | |
727 | |
728 | |
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729 void LinkResolver::resolve_special_call(CallInfo& result, KlassHandle resolved_klass, Symbol* method_name, |
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730 Symbol* method_signature, KlassHandle current_klass, bool check_access, TRAPS) { |
0 | 731 methodHandle resolved_method; |
732 linktime_resolve_special_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK); | |
733 runtime_resolve_special_method(result, resolved_method, resolved_klass, current_klass, check_access, CHECK); | |
734 } | |
735 | |
736 // throws linktime exceptions | |
737 void LinkResolver::linktime_resolve_special_method(methodHandle& resolved_method, KlassHandle resolved_klass, | |
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738 Symbol* method_name, Symbol* method_signature, |
0 | 739 KlassHandle current_klass, bool check_access, TRAPS) { |
740 | |
741 resolve_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK); | |
742 | |
743 // check if method name is <init>, that it is found in same klass as static type | |
744 if (resolved_method->name() == vmSymbols::object_initializer_name() && | |
745 resolved_method->method_holder() != resolved_klass()) { | |
746 ResourceMark rm(THREAD); | |
747 Exceptions::fthrow( | |
748 THREAD_AND_LOCATION, | |
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749 vmSymbols::java_lang_NoSuchMethodError(), |
0 | 750 "%s: method %s%s not found", |
751 resolved_klass->external_name(), | |
752 resolved_method->name()->as_C_string(), | |
753 resolved_method->signature()->as_C_string() | |
754 ); | |
755 return; | |
756 } | |
757 | |
758 // check if not static | |
759 if (resolved_method->is_static()) { | |
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760 ResourceMark rm(THREAD); |
0 | 761 char buf[200]; |
762 jio_snprintf(buf, sizeof(buf), | |
763 "Expecting non-static method %s", | |
764 methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()), | |
765 resolved_method->name(), | |
766 resolved_method->signature())); | |
767 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); | |
768 } | |
769 } | |
770 | |
771 // throws runtime exceptions | |
772 void LinkResolver::runtime_resolve_special_method(CallInfo& result, methodHandle resolved_method, KlassHandle resolved_klass, | |
773 KlassHandle current_klass, bool check_access, TRAPS) { | |
774 | |
775 // resolved method is selected method unless we have an old-style lookup | |
776 methodHandle sel_method(THREAD, resolved_method()); | |
777 | |
778 // check if this is an old-style super call and do a new lookup if so | |
779 { KlassHandle method_klass = KlassHandle(THREAD, | |
780 resolved_method->method_holder()); | |
781 | |
782 if (check_access && | |
783 // a) check if ACC_SUPER flag is set for the current class | |
784 current_klass->is_super() && | |
785 // b) check if the method class is a superclass of the current class (superclass relation is not reflexive!) | |
786 current_klass->is_subtype_of(method_klass()) && current_klass() != method_klass() && | |
787 // c) check if the method is not <init> | |
788 resolved_method->name() != vmSymbols::object_initializer_name()) { | |
789 // Lookup super method | |
790 KlassHandle super_klass(THREAD, current_klass->super()); | |
791 lookup_instance_method_in_klasses(sel_method, super_klass, | |
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792 resolved_method->name(), |
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793 resolved_method->signature(), CHECK); |
0 | 794 // check if found |
795 if (sel_method.is_null()) { | |
796 ResourceMark rm(THREAD); | |
797 THROW_MSG(vmSymbols::java_lang_AbstractMethodError(), | |
798 methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()), | |
799 resolved_method->name(), | |
800 resolved_method->signature())); | |
801 } | |
802 } | |
803 } | |
804 | |
805 // check if not static | |
806 if (sel_method->is_static()) { | |
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807 ResourceMark rm(THREAD); |
0 | 808 char buf[200]; |
809 jio_snprintf(buf, sizeof(buf), "Expecting non-static method %s", methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()), | |
810 resolved_method->name(), | |
811 resolved_method->signature())); | |
812 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); | |
813 } | |
814 | |
815 // check if abstract | |
816 if (sel_method->is_abstract()) { | |
817 ResourceMark rm(THREAD); | |
818 THROW_MSG(vmSymbols::java_lang_AbstractMethodError(), | |
819 methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()), | |
820 sel_method->name(), | |
821 sel_method->signature())); | |
822 } | |
823 | |
824 // setup result | |
825 result.set_static(resolved_klass, sel_method, CHECK); | |
826 } | |
827 | |
828 void LinkResolver::resolve_virtual_call(CallInfo& result, Handle recv, KlassHandle receiver_klass, KlassHandle resolved_klass, | |
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829 Symbol* method_name, Symbol* method_signature, KlassHandle current_klass, |
0 | 830 bool check_access, bool check_null_and_abstract, TRAPS) { |
831 methodHandle resolved_method; | |
832 linktime_resolve_virtual_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK); | |
833 runtime_resolve_virtual_method(result, resolved_method, resolved_klass, recv, receiver_klass, check_null_and_abstract, CHECK); | |
834 } | |
835 | |
836 // throws linktime exceptions | |
837 void LinkResolver::linktime_resolve_virtual_method(methodHandle &resolved_method, KlassHandle resolved_klass, | |
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838 Symbol* method_name, Symbol* method_signature, |
0 | 839 KlassHandle current_klass, bool check_access, TRAPS) { |
840 // normal method resolution | |
841 resolve_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK); | |
842 | |
843 assert(resolved_method->name() != vmSymbols::object_initializer_name(), "should have been checked in verifier"); | |
844 assert(resolved_method->name() != vmSymbols::class_initializer_name (), "should have been checked in verifier"); | |
845 | |
846 // check if not static | |
847 if (resolved_method->is_static()) { | |
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848 ResourceMark rm(THREAD); |
0 | 849 char buf[200]; |
850 jio_snprintf(buf, sizeof(buf), "Expecting non-static method %s", methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()), | |
851 resolved_method->name(), | |
852 resolved_method->signature())); | |
853 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); | |
854 } | |
855 } | |
856 | |
857 // throws runtime exceptions | |
858 void LinkResolver::runtime_resolve_virtual_method(CallInfo& result, | |
859 methodHandle resolved_method, | |
860 KlassHandle resolved_klass, | |
861 Handle recv, | |
862 KlassHandle recv_klass, | |
863 bool check_null_and_abstract, | |
864 TRAPS) { | |
865 | |
866 // setup default return values | |
867 int vtable_index = methodOopDesc::invalid_vtable_index; | |
868 methodHandle selected_method; | |
869 | |
870 assert(recv.is_null() || recv->is_oop(), "receiver is not an oop"); | |
871 | |
872 // runtime method resolution | |
873 if (check_null_and_abstract && recv.is_null()) { // check if receiver exists | |
874 THROW(vmSymbols::java_lang_NullPointerException()); | |
875 } | |
876 | |
877 // Virtual methods cannot be resolved before its klass has been linked, for otherwise the methodOop's | |
878 // has not been rewritten, and the vtable initialized. | |
879 assert(instanceKlass::cast(resolved_method->method_holder())->is_linked(), "must be linked"); | |
880 | |
881 // Virtual methods cannot be resolved before its klass has been linked, for otherwise the methodOop's | |
882 // has not been rewritten, and the vtable initialized. Make sure to do this after the nullcheck, since | |
883 // a missing receiver might result in a bogus lookup. | |
884 assert(instanceKlass::cast(resolved_method->method_holder())->is_linked(), "must be linked"); | |
885 | |
886 // do lookup based on receiver klass using the vtable index | |
887 if (resolved_method->method_holder()->klass_part()->is_interface()) { // miranda method | |
888 vtable_index = vtable_index_of_miranda_method(resolved_klass, | |
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889 resolved_method->name(), |
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890 resolved_method->signature(), CHECK); |
0 | 891 assert(vtable_index >= 0 , "we should have valid vtable index at this point"); |
892 | |
893 instanceKlass* inst = instanceKlass::cast(recv_klass()); | |
894 selected_method = methodHandle(THREAD, inst->method_at_vtable(vtable_index)); | |
895 } else { | |
896 // at this point we are sure that resolved_method is virtual and not | |
897 // a miranda method; therefore, it must have a valid vtable index. | |
898 vtable_index = resolved_method->vtable_index(); | |
899 // We could get a negative vtable_index for final methods, | |
900 // because as an optimization they are they are never put in the vtable, | |
901 // unless they override an existing method. | |
902 // If we do get a negative, it means the resolved method is the the selected | |
903 // method, and it can never be changed by an override. | |
904 if (vtable_index == methodOopDesc::nonvirtual_vtable_index) { | |
905 assert(resolved_method->can_be_statically_bound(), "cannot override this method"); | |
906 selected_method = resolved_method; | |
907 } else { | |
908 // recv_klass might be an arrayKlassOop but all vtables start at | |
909 // the same place. The cast is to avoid virtual call and assertion. | |
910 instanceKlass* inst = (instanceKlass*)recv_klass()->klass_part(); | |
911 selected_method = methodHandle(THREAD, inst->method_at_vtable(vtable_index)); | |
912 } | |
913 } | |
914 | |
915 // check if method exists | |
916 if (selected_method.is_null()) { | |
917 ResourceMark rm(THREAD); | |
918 THROW_MSG(vmSymbols::java_lang_AbstractMethodError(), | |
919 methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()), | |
920 resolved_method->name(), | |
921 resolved_method->signature())); | |
922 } | |
923 | |
924 // check if abstract | |
925 if (check_null_and_abstract && selected_method->is_abstract()) { | |
926 ResourceMark rm(THREAD); | |
927 THROW_MSG(vmSymbols::java_lang_AbstractMethodError(), | |
928 methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()), | |
929 selected_method->name(), | |
930 selected_method->signature())); | |
931 } | |
932 | |
933 // setup result | |
934 result.set_virtual(resolved_klass, recv_klass, resolved_method, selected_method, vtable_index, CHECK); | |
935 } | |
936 | |
937 void LinkResolver::resolve_interface_call(CallInfo& result, Handle recv, KlassHandle recv_klass, KlassHandle resolved_klass, | |
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938 Symbol* method_name, Symbol* method_signature, KlassHandle current_klass, |
0 | 939 bool check_access, bool check_null_and_abstract, TRAPS) { |
940 methodHandle resolved_method; | |
941 linktime_resolve_interface_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK); | |
942 runtime_resolve_interface_method(result, resolved_method, resolved_klass, recv, recv_klass, check_null_and_abstract, CHECK); | |
943 } | |
944 | |
945 // throws linktime exceptions | |
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946 void LinkResolver::linktime_resolve_interface_method(methodHandle& resolved_method, KlassHandle resolved_klass, Symbol* method_name, |
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947 Symbol* method_signature, KlassHandle current_klass, bool check_access, TRAPS) { |
0 | 948 // normal interface method resolution |
949 resolve_interface_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK); | |
950 | |
951 assert(resolved_method->name() != vmSymbols::object_initializer_name(), "should have been checked in verifier"); | |
952 assert(resolved_method->name() != vmSymbols::class_initializer_name (), "should have been checked in verifier"); | |
953 } | |
954 | |
955 // throws runtime exceptions | |
956 void LinkResolver::runtime_resolve_interface_method(CallInfo& result, methodHandle resolved_method, KlassHandle resolved_klass, | |
957 Handle recv, KlassHandle recv_klass, bool check_null_and_abstract, TRAPS) { | |
958 // check if receiver exists | |
959 if (check_null_and_abstract && recv.is_null()) { | |
960 THROW(vmSymbols::java_lang_NullPointerException()); | |
961 } | |
962 | |
963 // check if receiver klass implements the resolved interface | |
964 if (!recv_klass->is_subtype_of(resolved_klass())) { | |
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965 ResourceMark rm(THREAD); |
0 | 966 char buf[200]; |
967 jio_snprintf(buf, sizeof(buf), "Class %s does not implement the requested interface %s", | |
968 (Klass::cast(recv_klass()))->external_name(), | |
969 (Klass::cast(resolved_klass()))->external_name()); | |
970 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); | |
971 } | |
972 // do lookup based on receiver klass | |
973 methodHandle sel_method; | |
974 lookup_instance_method_in_klasses(sel_method, recv_klass, | |
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975 resolved_method->name(), |
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976 resolved_method->signature(), CHECK); |
0 | 977 // check if method exists |
978 if (sel_method.is_null()) { | |
979 ResourceMark rm(THREAD); | |
980 THROW_MSG(vmSymbols::java_lang_AbstractMethodError(), | |
981 methodOopDesc::name_and_sig_as_C_string(Klass::cast(recv_klass()), | |
982 resolved_method->name(), | |
983 resolved_method->signature())); | |
984 } | |
985 // check if public | |
986 if (!sel_method->is_public()) { | |
987 ResourceMark rm(THREAD); | |
988 THROW_MSG(vmSymbols::java_lang_IllegalAccessError(), | |
989 methodOopDesc::name_and_sig_as_C_string(Klass::cast(recv_klass()), | |
990 sel_method->name(), | |
991 sel_method->signature())); | |
992 } | |
993 // check if abstract | |
994 if (check_null_and_abstract && sel_method->is_abstract()) { | |
995 ResourceMark rm(THREAD); | |
996 THROW_MSG(vmSymbols::java_lang_AbstractMethodError(), | |
997 methodOopDesc::name_and_sig_as_C_string(Klass::cast(recv_klass()), | |
998 sel_method->name(), | |
999 sel_method->signature())); | |
1000 } | |
1001 // setup result | |
1002 result.set_interface(resolved_klass, recv_klass, resolved_method, sel_method, CHECK); | |
1003 } | |
1004 | |
1005 | |
1006 methodHandle LinkResolver::linktime_resolve_interface_method_or_null( | |
1007 KlassHandle resolved_klass, | |
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1008 Symbol* method_name, |
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1009 Symbol* method_signature, |
0 | 1010 KlassHandle current_klass, |
1011 bool check_access) { | |
1012 EXCEPTION_MARK; | |
1013 methodHandle method_result; | |
1014 linktime_resolve_interface_method(method_result, resolved_klass, method_name, method_signature, current_klass, check_access, THREAD); | |
1015 if (HAS_PENDING_EXCEPTION) { | |
1016 CLEAR_PENDING_EXCEPTION; | |
1017 return methodHandle(); | |
1018 } else { | |
1019 return method_result; | |
1020 } | |
1021 } | |
1022 | |
1023 methodHandle LinkResolver::linktime_resolve_virtual_method_or_null( | |
1024 KlassHandle resolved_klass, | |
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1025 Symbol* method_name, |
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1026 Symbol* method_signature, |
0 | 1027 KlassHandle current_klass, |
1028 bool check_access) { | |
1029 EXCEPTION_MARK; | |
1030 methodHandle method_result; | |
1031 linktime_resolve_virtual_method(method_result, resolved_klass, method_name, method_signature, current_klass, check_access, THREAD); | |
1032 if (HAS_PENDING_EXCEPTION) { | |
1033 CLEAR_PENDING_EXCEPTION; | |
1034 return methodHandle(); | |
1035 } else { | |
1036 return method_result; | |
1037 } | |
1038 } | |
1039 | |
1040 methodHandle LinkResolver::resolve_virtual_call_or_null( | |
1041 KlassHandle receiver_klass, | |
1042 KlassHandle resolved_klass, | |
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1043 Symbol* name, |
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1044 Symbol* signature, |
0 | 1045 KlassHandle current_klass) { |
1046 EXCEPTION_MARK; | |
1047 CallInfo info; | |
1048 resolve_virtual_call(info, Handle(), receiver_klass, resolved_klass, name, signature, current_klass, true, false, THREAD); | |
1049 if (HAS_PENDING_EXCEPTION) { | |
1050 CLEAR_PENDING_EXCEPTION; | |
1051 return methodHandle(); | |
1052 } | |
1053 return info.selected_method(); | |
1054 } | |
1055 | |
1056 methodHandle LinkResolver::resolve_interface_call_or_null( | |
1057 KlassHandle receiver_klass, | |
1058 KlassHandle resolved_klass, | |
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1059 Symbol* name, |
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1060 Symbol* signature, |
0 | 1061 KlassHandle current_klass) { |
1062 EXCEPTION_MARK; | |
1063 CallInfo info; | |
1064 resolve_interface_call(info, Handle(), receiver_klass, resolved_klass, name, signature, current_klass, true, false, THREAD); | |
1065 if (HAS_PENDING_EXCEPTION) { | |
1066 CLEAR_PENDING_EXCEPTION; | |
1067 return methodHandle(); | |
1068 } | |
1069 return info.selected_method(); | |
1070 } | |
1071 | |
1072 int LinkResolver::resolve_virtual_vtable_index( | |
1073 KlassHandle receiver_klass, | |
1074 KlassHandle resolved_klass, | |
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1075 Symbol* name, |
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1076 Symbol* signature, |
0 | 1077 KlassHandle current_klass) { |
1078 EXCEPTION_MARK; | |
1079 CallInfo info; | |
1080 resolve_virtual_call(info, Handle(), receiver_klass, resolved_klass, name, signature, current_klass, true, false, THREAD); | |
1081 if (HAS_PENDING_EXCEPTION) { | |
1082 CLEAR_PENDING_EXCEPTION; | |
1083 return methodOopDesc::invalid_vtable_index; | |
1084 } | |
1085 return info.vtable_index(); | |
1086 } | |
1087 | |
1088 methodHandle LinkResolver::resolve_static_call_or_null( | |
1089 KlassHandle resolved_klass, | |
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1090 Symbol* name, |
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1091 Symbol* signature, |
0 | 1092 KlassHandle current_klass) { |
1093 EXCEPTION_MARK; | |
1094 CallInfo info; | |
1095 resolve_static_call(info, resolved_klass, name, signature, current_klass, true, false, THREAD); | |
1096 if (HAS_PENDING_EXCEPTION) { | |
1097 CLEAR_PENDING_EXCEPTION; | |
1098 return methodHandle(); | |
1099 } | |
1100 return info.selected_method(); | |
1101 } | |
1102 | |
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1103 methodHandle LinkResolver::resolve_special_call_or_null(KlassHandle resolved_klass, Symbol* name, Symbol* signature, |
0 | 1104 KlassHandle current_klass) { |
1105 EXCEPTION_MARK; | |
1106 CallInfo info; | |
1107 resolve_special_call(info, resolved_klass, name, signature, current_klass, true, THREAD); | |
1108 if (HAS_PENDING_EXCEPTION) { | |
1109 CLEAR_PENDING_EXCEPTION; | |
1110 return methodHandle(); | |
1111 } | |
1112 return info.selected_method(); | |
1113 } | |
1114 | |
1115 | |
1116 | |
1117 //------------------------------------------------------------------------------------------------------------------------ | |
1118 // ConstantPool entries | |
1119 | |
1120 void LinkResolver::resolve_invoke(CallInfo& result, Handle recv, constantPoolHandle pool, int index, Bytecodes::Code byte, TRAPS) { | |
1121 switch (byte) { | |
1122 case Bytecodes::_invokestatic : resolve_invokestatic (result, pool, index, CHECK); break; | |
1123 case Bytecodes::_invokespecial : resolve_invokespecial (result, pool, index, CHECK); break; | |
1124 case Bytecodes::_invokevirtual : resolve_invokevirtual (result, recv, pool, index, CHECK); break; | |
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1125 case Bytecodes::_invokehandle : resolve_invokehandle (result, pool, index, CHECK); break; |
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1126 case Bytecodes::_invokedynamic : resolve_invokedynamic (result, pool, index, CHECK); break; |
0 | 1127 case Bytecodes::_invokeinterface: resolve_invokeinterface(result, recv, pool, index, CHECK); break; |
1128 } | |
1129 return; | |
1130 } | |
1131 | |
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1132 void LinkResolver::resolve_pool(KlassHandle& resolved_klass, Symbol*& method_name, Symbol*& method_signature, |
0 | 1133 KlassHandle& current_klass, constantPoolHandle pool, int index, TRAPS) { |
1134 // resolve klass | |
1135 resolve_klass(resolved_klass, pool, index, CHECK); | |
1136 | |
1137 // Get name, signature, and static klass | |
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1138 method_name = pool->name_ref_at(index); |
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1139 method_signature = pool->signature_ref_at(index); |
0 | 1140 current_klass = KlassHandle(THREAD, pool->pool_holder()); |
1141 } | |
1142 | |
1143 | |
1144 void LinkResolver::resolve_invokestatic(CallInfo& result, constantPoolHandle pool, int index, TRAPS) { | |
1145 KlassHandle resolved_klass; | |
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1146 Symbol* method_name = NULL; |
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1147 Symbol* method_signature = NULL; |
0 | 1148 KlassHandle current_klass; |
1149 resolve_pool(resolved_klass, method_name, method_signature, current_klass, pool, index, CHECK); | |
1150 resolve_static_call(result, resolved_klass, method_name, method_signature, current_klass, true, true, CHECK); | |
1151 } | |
1152 | |
1153 | |
1154 void LinkResolver::resolve_invokespecial(CallInfo& result, constantPoolHandle pool, int index, TRAPS) { | |
1155 KlassHandle resolved_klass; | |
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1156 Symbol* method_name = NULL; |
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1157 Symbol* method_signature = NULL; |
0 | 1158 KlassHandle current_klass; |
1159 resolve_pool(resolved_klass, method_name, method_signature, current_klass, pool, index, CHECK); | |
1160 resolve_special_call(result, resolved_klass, method_name, method_signature, current_klass, true, CHECK); | |
1161 } | |
1162 | |
1163 | |
1164 void LinkResolver::resolve_invokevirtual(CallInfo& result, Handle recv, | |
1165 constantPoolHandle pool, int index, | |
1166 TRAPS) { | |
1167 | |
1168 KlassHandle resolved_klass; | |
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1169 Symbol* method_name = NULL; |
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1170 Symbol* method_signature = NULL; |
0 | 1171 KlassHandle current_klass; |
1172 resolve_pool(resolved_klass, method_name, method_signature, current_klass, pool, index, CHECK); | |
1173 KlassHandle recvrKlass (THREAD, recv.is_null() ? (klassOop)NULL : recv->klass()); | |
1174 resolve_virtual_call(result, recv, recvrKlass, resolved_klass, method_name, method_signature, current_klass, true, true, CHECK); | |
1175 } | |
1176 | |
1177 | |
1178 void LinkResolver::resolve_invokeinterface(CallInfo& result, Handle recv, constantPoolHandle pool, int index, TRAPS) { | |
1179 KlassHandle resolved_klass; | |
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1180 Symbol* method_name = NULL; |
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1181 Symbol* method_signature = NULL; |
0 | 1182 KlassHandle current_klass; |
1183 resolve_pool(resolved_klass, method_name, method_signature, current_klass, pool, index, CHECK); | |
1184 KlassHandle recvrKlass (THREAD, recv.is_null() ? (klassOop)NULL : recv->klass()); | |
1185 resolve_interface_call(result, recv, recvrKlass, resolved_klass, method_name, method_signature, current_klass, true, true, CHECK); | |
1186 } | |
1187 | |
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1188 |
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1189 void LinkResolver::resolve_invokehandle(CallInfo& result, constantPoolHandle pool, int index, TRAPS) { |
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1190 assert(EnableInvokeDynamic, ""); |
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1191 // This guy is reached from InterpreterRuntime::resolve_invokehandle. |
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1192 KlassHandle resolved_klass; |
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1193 Symbol* method_name = NULL; |
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1194 Symbol* method_signature = NULL; |
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1195 KlassHandle current_klass; |
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1196 resolve_pool(resolved_klass, method_name, method_signature, current_klass, pool, index, CHECK); |
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1197 if (TraceMethodHandles) |
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1198 tty->print_cr("resolve_invokehandle %s %s", method_name->as_C_string(), method_signature->as_C_string()); |
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1199 resolve_handle_call(result, resolved_klass, method_name, method_signature, current_klass, CHECK); |
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1200 } |
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1201 |
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1202 void LinkResolver::resolve_handle_call(CallInfo& result, KlassHandle resolved_klass, |
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1203 Symbol* method_name, Symbol* method_signature, |
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1204 KlassHandle current_klass, |
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1205 TRAPS) { |
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1206 // JSR 292: this must be an implicitly generated method MethodHandle.invokeExact(*...) or similar |
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1207 assert(resolved_klass() == SystemDictionary::MethodHandle_klass(), ""); |
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1208 assert(MethodHandles::is_signature_polymorphic_name(method_name), ""); |
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1209 methodHandle resolved_method; |
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1210 Handle resolved_appendix; |
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1211 lookup_polymorphic_method(resolved_method, resolved_klass, |
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1212 method_name, method_signature, |
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1213 current_klass, &resolved_appendix, CHECK); |
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1214 result.set_handle(resolved_method, resolved_appendix, CHECK); |
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1215 } |
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1216 |
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1217 |
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1218 void LinkResolver::resolve_invokedynamic(CallInfo& result, constantPoolHandle pool, int index, TRAPS) { |
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1219 assert(EnableInvokeDynamic, ""); |
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1220 pool->set_invokedynamic(); // mark header to flag active call sites |
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1221 |
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1222 //resolve_pool(<resolved_klass>, method_name, method_signature, current_klass, pool, index, CHECK); |
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1223 Symbol* method_name = pool->name_ref_at(index); |
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1224 Symbol* method_signature = pool->signature_ref_at(index); |
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1225 KlassHandle current_klass = KlassHandle(THREAD, pool->pool_holder()); |
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1226 |
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1227 // Resolve the bootstrap specifier (BSM + optional arguments). |
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1228 Handle bootstrap_specifier; |
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1229 // Check if CallSite has been bound already: |
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1230 ConstantPoolCacheEntry* cpce = pool->cache()->secondary_entry_at(index); |
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1231 if (cpce->is_f1_null()) { |
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1232 int pool_index = pool->cache()->main_entry_at(index)->constant_pool_index(); |
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1233 oop bsm_info = pool->resolve_bootstrap_specifier_at(pool_index, CHECK); |
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1234 assert(bsm_info != NULL, ""); |
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1235 // FIXME: Cache this once per BootstrapMethods entry, not once per CONSTANT_InvokeDynamic. |
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1236 bootstrap_specifier = Handle(THREAD, bsm_info); |
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1237 } |
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1238 if (!cpce->is_f1_null()) { |
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1239 methodHandle method(THREAD, cpce->f2_as_vfinal_method()); |
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1240 Handle appendix(THREAD, cpce->has_appendix() ? cpce->f1_appendix() : (oop)NULL); |
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1241 result.set_handle(method, appendix, CHECK); |
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1242 return; |
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1243 } |
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1244 |
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1245 if (TraceMethodHandles) { |
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1246 tty->print_cr("resolve_invokedynamic #%d %s %s", |
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1247 constantPoolCacheOopDesc::decode_secondary_index(index), |
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1248 method_name->as_C_string(), method_signature->as_C_string()); |
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1249 tty->print(" BSM info: "); bootstrap_specifier->print(); |
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1250 } |
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1251 |
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1252 resolve_dynamic_call(result, bootstrap_specifier, method_name, method_signature, current_klass, CHECK); |
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1253 } |
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1254 |
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1255 void LinkResolver::resolve_dynamic_call(CallInfo& result, |
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1256 Handle bootstrap_specifier, |
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1257 Symbol* method_name, Symbol* method_signature, |
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1258 KlassHandle current_klass, |
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1259 TRAPS) { |
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1260 // JSR 292: this must resolve to an implicitly generated method MH.linkToCallSite(*...) |
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1261 // The appendix argument is likely to be a freshly-created CallSite. |
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1262 Handle resolved_appendix; |
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1263 methodHandle resolved_method = |
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1264 SystemDictionary::find_dynamic_call_site_invoker(current_klass, |
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1265 bootstrap_specifier, |
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1266 method_name, method_signature, |
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1267 &resolved_appendix, |
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1268 THREAD); |
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1269 if (HAS_PENDING_EXCEPTION) { |
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1270 if (TraceMethodHandles) { |
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1271 tty->print_cr("invokedynamic throws BSME for "INTPTR_FORMAT, PENDING_EXCEPTION); |
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1272 PENDING_EXCEPTION->print(); |
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1273 } |
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1274 if (PENDING_EXCEPTION->is_a(SystemDictionary::BootstrapMethodError_klass())) { |
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1275 // throw these guys, since they are already wrapped |
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1276 return; |
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1277 } |
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1278 if (!PENDING_EXCEPTION->is_a(SystemDictionary::LinkageError_klass())) { |
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1279 // intercept only LinkageErrors which might have failed to wrap |
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1280 return; |
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1281 } |
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1282 // See the "Linking Exceptions" section for the invokedynamic instruction in the JVMS. |
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1283 Handle nested_exception(THREAD, PENDING_EXCEPTION); |
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1284 CLEAR_PENDING_EXCEPTION; |
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1285 THROW_CAUSE(vmSymbols::java_lang_BootstrapMethodError(), nested_exception) |
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1286 } |
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1287 result.set_handle(resolved_method, resolved_appendix, CHECK); |
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1288 } |
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1289 |
0 | 1290 //------------------------------------------------------------------------------------------------------------------------ |
1291 #ifndef PRODUCT | |
1292 | |
1293 void FieldAccessInfo::print() { | |
1294 ResourceMark rm; | |
1295 tty->print_cr("Field %s@%d", name()->as_C_string(), field_offset()); | |
1296 } | |
1297 | |
1298 #endif |