Mercurial > hg > truffle
annotate src/share/vm/interpreter/linkResolver.cpp @ 12356:359f7e70ae7f
Reduce HotSpot diff and fix previous merge
author | Gilles Duboscq <duboscq@ssw.jku.at> |
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date | Fri, 11 Oct 2013 15:41:33 +0200 |
parents | 36b97be47bde |
children | 096c224171c4 |
rev | line source |
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0 | 1 /* |
2 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. | |
3 * | |
4 * This code is free software; you can redistribute it and/or modify it | |
5 * under the terms of the GNU General Public License version 2 only, as | |
6 * published by the Free Software Foundation. | |
7 * | |
8 * This code is distributed in the hope that it will be useful, but WITHOUT | |
9 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
10 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
11 * version 2 for more details (a copy is included in the LICENSE file that | |
12 * accompanied this code). | |
13 * | |
14 * You should have received a copy of the GNU General Public License version | |
15 * 2 along with this work; if not, write to the Free Software Foundation, | |
16 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
17 * | |
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18 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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19 * or visit www.oracle.com if you need additional information or have any |
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20 * questions. |
0 | 21 * |
22 */ | |
23 | |
1972 | 24 #include "precompiled.hpp" |
6934 | 25 #include "classfile/defaultMethods.hpp" |
1972 | 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" | |
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45 #include "runtime/thread.inline.hpp" |
1972 | 46 #include "runtime/vmThread.hpp" |
0 | 47 |
48 | |
49 //------------------------------------------------------------------------------------------------------------------------ | |
50 // Implementation of CallInfo | |
51 | |
52 | |
53 void CallInfo::set_static(KlassHandle resolved_klass, methodHandle resolved_method, TRAPS) { | |
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54 int vtable_index = Method::nonvirtual_vtable_index; |
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55 set_common(resolved_klass, resolved_klass, resolved_method, resolved_method, CallInfo::direct_call, vtable_index, CHECK); |
0 | 56 } |
57 | |
58 | |
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59 void CallInfo::set_interface(KlassHandle resolved_klass, KlassHandle selected_klass, methodHandle resolved_method, methodHandle selected_method, int itable_index, TRAPS) { |
0 | 60 // This is only called for interface methods. If the resolved_method |
61 // comes from java/lang/Object, it can be the subject of a virtual call, so | |
62 // we should pick the vtable index from the resolved method. | |
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63 // In that case, the caller must call set_virtual instead of set_interface. |
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64 assert(resolved_method->method_holder()->is_interface(), ""); |
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65 assert(itable_index == resolved_method()->itable_index(), ""); |
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66 set_common(resolved_klass, selected_klass, resolved_method, selected_method, CallInfo::itable_call, itable_index, CHECK); |
0 | 67 } |
68 | |
69 void CallInfo::set_virtual(KlassHandle resolved_klass, KlassHandle selected_klass, methodHandle resolved_method, methodHandle selected_method, int vtable_index, TRAPS) { | |
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70 assert(vtable_index >= 0 || vtable_index == Method::nonvirtual_vtable_index, "valid index"); |
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71 assert(vtable_index < 0 || !resolved_method->has_vtable_index() || vtable_index == resolved_method->vtable_index(), ""); |
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72 CallKind kind = (vtable_index >= 0 && !resolved_method->can_be_statically_bound() ? CallInfo::vtable_call : CallInfo::direct_call); |
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73 set_common(resolved_klass, selected_klass, resolved_method, selected_method, kind, vtable_index, CHECK); |
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74 assert(!resolved_method->is_compiled_lambda_form(), "these must be handled via an invokehandle call"); |
0 | 75 } |
76 | |
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77 void CallInfo::set_handle(methodHandle resolved_method, Handle resolved_appendix, Handle resolved_method_type, TRAPS) { |
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78 if (resolved_method.is_null()) { |
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79 THROW_MSG(vmSymbols::java_lang_InternalError(), "resolved method is null"); |
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80 } |
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81 KlassHandle resolved_klass = SystemDictionary::MethodHandle_klass(); |
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82 assert(resolved_method->intrinsic_id() == vmIntrinsics::_invokeBasic || |
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83 resolved_method->is_compiled_lambda_form(), |
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84 "linkMethod must return one of these"); |
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85 int vtable_index = Method::nonvirtual_vtable_index; |
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86 assert(!resolved_method->has_vtable_index(), ""); |
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87 set_common(resolved_klass, resolved_klass, resolved_method, resolved_method, CallInfo::direct_call, vtable_index, CHECK); |
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88 _resolved_appendix = resolved_appendix; |
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89 _resolved_method_type = resolved_method_type; |
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90 } |
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91 |
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92 void CallInfo::set_common(KlassHandle resolved_klass, |
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93 KlassHandle selected_klass, |
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94 methodHandle resolved_method, |
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95 methodHandle selected_method, |
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96 CallKind kind, |
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97 int index, |
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98 TRAPS) { |
0 | 99 assert(resolved_method->signature() == selected_method->signature(), "signatures must correspond"); |
100 _resolved_klass = resolved_klass; | |
101 _selected_klass = selected_klass; | |
102 _resolved_method = resolved_method; | |
103 _selected_method = selected_method; | |
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104 _call_kind = kind; |
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105 _call_index = index; |
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106 _resolved_appendix = Handle(); |
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107 DEBUG_ONLY(verify()); // verify before making side effects |
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108 |
1783 | 109 if (CompilationPolicy::must_be_compiled(selected_method)) { |
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110 // This path is unusual, mostly used by the '-Xcomp' stress test mode. |
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111 |
1783 | 112 // Note: with several active threads, the must_be_compiled may be true |
113 // while can_be_compiled is false; remove assert | |
114 // assert(CompilationPolicy::can_be_compiled(selected_method), "cannot compile"); | |
0 | 115 if (THREAD->is_Compiler_thread()) { |
116 // don't force compilation, resolve was on behalf of compiler | |
117 return; | |
118 } | |
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119 if (selected_method->method_holder()->is_not_initialized()) { |
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120 // 'is_not_initialized' means not only '!is_initialized', but also that |
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121 // initialization has not been started yet ('!being_initialized') |
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122 // Do not force compilation of methods in uninitialized classes. |
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123 // Note that doing this would throw an assert later, |
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124 // in CompileBroker::compile_method. |
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125 // We sometimes use the link resolver to do reflective lookups |
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126 // even before classes are initialized. |
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127 return; |
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128 } |
0 | 129 CompileBroker::compile_method(selected_method, InvocationEntryBci, |
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130 CompilationPolicy::policy()->initial_compile_level(), |
1783 | 131 methodHandle(), 0, "must_be_compiled", CHECK); |
0 | 132 } |
133 } | |
134 | |
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135 // utility query for unreflecting a method |
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136 CallInfo::CallInfo(Method* resolved_method, Klass* resolved_klass) { |
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137 Klass* resolved_method_holder = resolved_method->method_holder(); |
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138 if (resolved_klass == NULL) { // 2nd argument defaults to holder of 1st |
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139 resolved_klass = resolved_method_holder; |
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140 } |
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141 _resolved_klass = resolved_klass; |
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142 _selected_klass = resolved_klass; |
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143 _resolved_method = resolved_method; |
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144 _selected_method = resolved_method; |
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145 // classify: |
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146 CallKind kind = CallInfo::unknown_kind; |
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147 int index = resolved_method->vtable_index(); |
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148 if (resolved_method->can_be_statically_bound()) { |
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149 kind = CallInfo::direct_call; |
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150 } else if (!resolved_method_holder->is_interface()) { |
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151 // Could be an Object method inherited into an interface, but still a vtable call. |
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152 kind = CallInfo::vtable_call; |
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153 } else if (!resolved_klass->is_interface()) { |
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154 // A miranda method. Compute the vtable index. |
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155 ResourceMark rm; |
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156 klassVtable* vt = InstanceKlass::cast(resolved_klass)->vtable(); |
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157 index = vt->index_of_miranda(resolved_method->name(), |
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158 resolved_method->signature()); |
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159 kind = CallInfo::vtable_call; |
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160 } else { |
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161 // A regular interface call. |
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162 kind = CallInfo::itable_call; |
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163 index = resolved_method->itable_index(); |
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164 } |
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165 assert(index == Method::nonvirtual_vtable_index || index >= 0, err_msg("bad index %d", index)); |
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166 _call_kind = kind; |
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167 _call_index = index; |
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168 _resolved_appendix = Handle(); |
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169 DEBUG_ONLY(verify()); |
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170 } |
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171 |
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172 #ifdef ASSERT |
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173 void CallInfo::verify() { |
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174 switch (call_kind()) { // the meaning and allowed value of index depends on kind |
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175 case CallInfo::direct_call: |
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176 if (_call_index == Method::nonvirtual_vtable_index) break; |
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177 // else fall through to check vtable index: |
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178 case CallInfo::vtable_call: |
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179 assert(resolved_klass()->verify_vtable_index(_call_index), ""); |
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180 break; |
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181 case CallInfo::itable_call: |
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182 assert(resolved_method()->method_holder()->verify_itable_index(_call_index), ""); |
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183 break; |
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184 case CallInfo::unknown_kind: |
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185 assert(call_kind() != CallInfo::unknown_kind, "CallInfo must be set"); |
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186 break; |
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187 default: |
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188 fatal(err_msg_res("Unexpected call kind %d", call_kind())); |
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189 } |
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190 } |
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191 #endif //ASSERT |
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192 |
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193 |
0 | 194 |
195 //------------------------------------------------------------------------------------------------------------------------ | |
196 // Klass resolution | |
197 | |
198 void LinkResolver::check_klass_accessability(KlassHandle ref_klass, KlassHandle sel_klass, TRAPS) { | |
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199 if (!Reflection::verify_class_access(ref_klass(), |
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200 sel_klass(), |
0 | 201 true)) { |
202 ResourceMark rm(THREAD); | |
203 Exceptions::fthrow( | |
204 THREAD_AND_LOCATION, | |
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205 vmSymbols::java_lang_IllegalAccessError(), |
0 | 206 "tried to access class %s from class %s", |
207 sel_klass->external_name(), | |
208 ref_klass->external_name() | |
209 ); | |
210 return; | |
211 } | |
212 } | |
213 | |
214 void LinkResolver::resolve_klass(KlassHandle& result, constantPoolHandle pool, int index, TRAPS) { | |
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215 Klass* result_oop = pool->klass_ref_at(index, CHECK); |
0 | 216 result = KlassHandle(THREAD, result_oop); |
217 } | |
218 | |
219 //------------------------------------------------------------------------------------------------------------------------ | |
220 // Method resolution | |
221 // | |
222 // According to JVM spec. $5.4.3c & $5.4.3d | |
223 | |
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224 void LinkResolver::lookup_method_in_klasses(methodHandle& result, KlassHandle klass, Symbol* name, Symbol* signature, TRAPS) { |
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225 Method* result_oop = klass->uncached_lookup_method(name, signature); |
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226 if (EnableInvokeDynamic && result_oop != NULL) { |
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227 vmIntrinsics::ID iid = result_oop->intrinsic_id(); |
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228 if (MethodHandles::is_signature_polymorphic(iid)) { |
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229 // Do not link directly to these. The VM must produce a synthetic one using lookup_polymorphic_method. |
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230 return; |
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231 } |
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232 } |
0 | 233 result = methodHandle(THREAD, result_oop); |
234 } | |
235 | |
236 // returns first instance method | |
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237 void LinkResolver::lookup_instance_method_in_klasses(methodHandle& result, KlassHandle klass, Symbol* name, Symbol* signature, TRAPS) { |
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238 Method* result_oop = klass->uncached_lookup_method(name, signature); |
0 | 239 result = methodHandle(THREAD, result_oop); |
240 while (!result.is_null() && result->is_static()) { | |
6983 | 241 klass = KlassHandle(THREAD, result->method_holder()->super()); |
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242 result = methodHandle(THREAD, klass->uncached_lookup_method(name, signature)); |
0 | 243 } |
244 } | |
245 | |
246 | |
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247 int LinkResolver::vtable_index_of_miranda_method(KlassHandle klass, Symbol* name, Symbol* signature, TRAPS) { |
0 | 248 ResourceMark rm(THREAD); |
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249 klassVtable *vt = InstanceKlass::cast(klass())->vtable(); |
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250 return vt->index_of_miranda(name, signature); |
0 | 251 } |
252 | |
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253 void LinkResolver::lookup_method_in_interfaces(methodHandle& result, KlassHandle klass, Symbol* name, Symbol* signature, TRAPS) { |
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254 InstanceKlass *ik = InstanceKlass::cast(klass()); |
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255 result = methodHandle(THREAD, ik->lookup_method_in_all_interfaces(name, signature)); |
0 | 256 } |
257 | |
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258 void LinkResolver::lookup_polymorphic_method(methodHandle& result, |
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259 KlassHandle klass, Symbol* name, Symbol* full_signature, |
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260 KlassHandle current_klass, |
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261 Handle *appendix_result_or_null, |
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262 Handle *method_type_result, |
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263 TRAPS) { |
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264 vmIntrinsics::ID iid = MethodHandles::signature_polymorphic_name_id(name); |
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265 if (TraceMethodHandles) { |
9082 | 266 ResourceMark rm(THREAD); |
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267 tty->print_cr("lookup_polymorphic_method iid=%s %s.%s%s", |
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268 vmIntrinsics::name_at(iid), klass->external_name(), |
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269 name->as_C_string(), full_signature->as_C_string()); |
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270 } |
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271 if (EnableInvokeDynamic && |
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272 klass() == SystemDictionary::MethodHandle_klass() && |
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273 iid != vmIntrinsics::_none) { |
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274 if (MethodHandles::is_signature_polymorphic_intrinsic(iid)) { |
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275 // Most of these do not need an up-call to Java to resolve, so can be done anywhere. |
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276 // Do not erase last argument type (MemberName) if it is a static linkTo method. |
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277 bool keep_last_arg = MethodHandles::is_signature_polymorphic_static(iid); |
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278 TempNewSymbol basic_signature = |
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279 MethodHandles::lookup_basic_type_signature(full_signature, keep_last_arg, CHECK); |
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280 if (TraceMethodHandles) { |
9082 | 281 ResourceMark rm(THREAD); |
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282 tty->print_cr("lookup_polymorphic_method %s %s => basic %s", |
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283 name->as_C_string(), |
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284 full_signature->as_C_string(), |
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285 basic_signature->as_C_string()); |
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286 } |
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287 result = SystemDictionary::find_method_handle_intrinsic(iid, |
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288 basic_signature, |
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289 CHECK); |
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290 if (result.not_null()) { |
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291 assert(result->is_method_handle_intrinsic(), "MH.invokeBasic or MH.linkTo* intrinsic"); |
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292 assert(result->intrinsic_id() != vmIntrinsics::_invokeGeneric, "wrong place to find this"); |
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293 assert(basic_signature == result->signature(), "predict the result signature"); |
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294 if (TraceMethodHandles) { |
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295 tty->print("lookup_polymorphic_method => intrinsic "); |
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296 result->print_on(tty); |
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297 } |
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298 return; |
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299 } |
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300 } else if (iid == vmIntrinsics::_invokeGeneric |
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301 && !THREAD->is_Compiler_thread() |
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302 && appendix_result_or_null != NULL) { |
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303 // This is a method with type-checking semantics. |
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304 // We will ask Java code to spin an adapter method for it. |
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305 if (!MethodHandles::enabled()) { |
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306 // Make sure the Java part of the runtime has been booted up. |
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307 Klass* natives = SystemDictionary::MethodHandleNatives_klass(); |
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308 if (natives == NULL || InstanceKlass::cast(natives)->is_not_initialized()) { |
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309 SystemDictionary::resolve_or_fail(vmSymbols::java_lang_invoke_MethodHandleNatives(), |
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310 Handle(), |
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311 Handle(), |
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312 true, |
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313 CHECK); |
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314 } |
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315 } |
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316 |
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317 Handle appendix; |
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318 Handle method_type; |
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319 result = SystemDictionary::find_method_handle_invoker(name, |
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320 full_signature, |
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321 current_klass, |
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322 &appendix, |
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323 &method_type, |
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324 CHECK); |
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325 if (TraceMethodHandles) { |
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326 tty->print("lookup_polymorphic_method => (via Java) "); |
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327 result->print_on(tty); |
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328 tty->print(" lookup_polymorphic_method => appendix = "); |
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329 if (appendix.is_null()) tty->print_cr("(none)"); |
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330 else appendix->print_on(tty); |
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331 } |
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332 if (result.not_null()) { |
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333 #ifdef ASSERT |
9082 | 334 ResourceMark rm(THREAD); |
335 | |
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336 TempNewSymbol basic_signature = |
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337 MethodHandles::lookup_basic_type_signature(full_signature, CHECK); |
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338 int actual_size_of_params = result->size_of_parameters(); |
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339 int expected_size_of_params = ArgumentSizeComputer(basic_signature).size(); |
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340 // +1 for MethodHandle.this, +1 for trailing MethodType |
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341 if (!MethodHandles::is_signature_polymorphic_static(iid)) expected_size_of_params += 1; |
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342 if (appendix.not_null()) expected_size_of_params += 1; |
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343 if (actual_size_of_params != expected_size_of_params) { |
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344 tty->print_cr("*** basic_signature=%s", basic_signature->as_C_string()); |
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345 tty->print_cr("*** result for %s: ", vmIntrinsics::name_at(iid)); |
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346 result->print(); |
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347 } |
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348 assert(actual_size_of_params == expected_size_of_params, |
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349 err_msg("%d != %d", actual_size_of_params, expected_size_of_params)); |
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350 #endif //ASSERT |
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351 |
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352 assert(appendix_result_or_null != NULL, ""); |
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353 (*appendix_result_or_null) = appendix; |
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354 (*method_type_result) = method_type; |
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355 return; |
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356 } |
710 | 357 } |
358 } | |
359 } | |
360 | |
0 | 361 void LinkResolver::check_method_accessability(KlassHandle ref_klass, |
362 KlassHandle resolved_klass, | |
363 KlassHandle sel_klass, | |
364 methodHandle sel_method, | |
365 TRAPS) { | |
366 | |
367 AccessFlags flags = sel_method->access_flags(); | |
368 | |
369 // Special case: arrays always override "clone". JVMS 2.15. | |
370 // If the resolved klass is an array class, and the declaring class | |
371 // is java.lang.Object and the method is "clone", set the flags | |
372 // to public. | |
373 // | |
374 // We'll check for the method name first, as that's most likely | |
375 // to be false (so we'll short-circuit out of these tests). | |
376 if (sel_method->name() == vmSymbols::clone_name() && | |
1142 | 377 sel_klass() == SystemDictionary::Object_klass() && |
0 | 378 resolved_klass->oop_is_array()) { |
379 // We need to change "protected" to "public". | |
380 assert(flags.is_protected(), "clone not protected?"); | |
381 jint new_flags = flags.as_int(); | |
382 new_flags = new_flags & (~JVM_ACC_PROTECTED); | |
383 new_flags = new_flags | JVM_ACC_PUBLIC; | |
384 flags.set_flags(new_flags); | |
385 } | |
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386 // assert(extra_arg_result_or_null != NULL, "must be able to return extra argument"); |
0 | 387 |
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388 if (!Reflection::verify_field_access(ref_klass(), |
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389 resolved_klass(), |
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390 sel_klass(), |
0 | 391 flags, |
392 true)) { | |
393 ResourceMark rm(THREAD); | |
394 Exceptions::fthrow( | |
395 THREAD_AND_LOCATION, | |
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396 vmSymbols::java_lang_IllegalAccessError(), |
0 | 397 "tried to access method %s.%s%s from class %s", |
398 sel_klass->external_name(), | |
399 sel_method->name()->as_C_string(), | |
400 sel_method->signature()->as_C_string(), | |
401 ref_klass->external_name() | |
402 ); | |
403 return; | |
404 } | |
405 } | |
406 | |
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407 void LinkResolver::resolve_method_statically(methodHandle& resolved_method, KlassHandle& resolved_klass, |
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408 Bytecodes::Code code, constantPoolHandle pool, int index, TRAPS) { |
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409 // This method is used only |
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410 // (1) in C2 from InlineTree::ok_to_inline (via ciMethod::check_call), |
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411 // and |
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412 // (2) in Bytecode_invoke::static_target |
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413 // It appears to fail when applied to an invokeinterface call site. |
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414 // FIXME: Remove this method and ciMethod::check_call; refactor to use the other LinkResolver entry points. |
0 | 415 // resolve klass |
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416 if (code == Bytecodes::_invokedynamic) { |
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417 resolved_klass = SystemDictionary::MethodHandle_klass(); |
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418 Symbol* method_name = vmSymbols::invoke_name(); |
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419 Symbol* method_signature = pool->signature_ref_at(index); |
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420 KlassHandle current_klass(THREAD, pool->pool_holder()); |
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421 resolve_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, true, CHECK); |
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422 return; |
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423 } |
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424 |
0 | 425 resolve_klass(resolved_klass, pool, index, CHECK); |
426 | |
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427 Symbol* method_name = pool->name_ref_at(index); |
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428 Symbol* method_signature = pool->signature_ref_at(index); |
0 | 429 KlassHandle current_klass(THREAD, pool->pool_holder()); |
430 | |
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431 if (pool->has_preresolution() |
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432 || (resolved_klass() == SystemDictionary::MethodHandle_klass() && |
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433 MethodHandles::is_signature_polymorphic_name(resolved_klass(), method_name))) { |
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434 Method* result_oop = ConstantPool::method_at_if_loaded(pool, index); |
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435 if (result_oop != NULL) { |
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436 resolved_method = methodHandle(THREAD, result_oop); |
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437 return; |
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438 } |
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439 } |
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440 |
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441 if (code == Bytecodes::_invokeinterface) { |
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442 resolve_interface_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, true, CHECK); |
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443 } else { |
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444 resolve_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, true, CHECK); |
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445 } |
0 | 446 } |
447 | |
448 void LinkResolver::resolve_method(methodHandle& resolved_method, KlassHandle resolved_klass, | |
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449 Symbol* method_name, Symbol* method_signature, |
0 | 450 KlassHandle current_klass, bool check_access, TRAPS) { |
451 | |
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452 Handle nested_exception; |
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453 |
6934 | 454 // 1. lookup method in resolved klass and its super klasses |
0 | 455 lookup_method_in_klasses(resolved_method, resolved_klass, method_name, method_signature, CHECK); |
456 | |
457 if (resolved_method.is_null()) { // not found in the class hierarchy | |
6934 | 458 // 2. lookup method in all the interfaces implemented by the resolved klass |
0 | 459 lookup_method_in_interfaces(resolved_method, resolved_klass, method_name, method_signature, CHECK); |
460 | |
461 if (resolved_method.is_null()) { | |
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462 // JSR 292: see if this is an implicitly generated method MethodHandle.linkToVirtual(*...), etc |
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463 lookup_polymorphic_method(resolved_method, resolved_klass, method_name, method_signature, |
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464 current_klass, (Handle*)NULL, (Handle*)NULL, THREAD); |
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465 if (HAS_PENDING_EXCEPTION) { |
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466 nested_exception = Handle(THREAD, PENDING_EXCEPTION); |
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467 CLEAR_PENDING_EXCEPTION; |
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468 } |
710 | 469 } |
470 | |
471 if (resolved_method.is_null()) { | |
6934 | 472 // 3. method lookup failed |
0 | 473 ResourceMark rm(THREAD); |
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474 THROW_MSG_CAUSE(vmSymbols::java_lang_NoSuchMethodError(), |
6983 | 475 Method::name_and_sig_as_C_string(resolved_klass(), |
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476 method_name, |
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477 method_signature), |
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478 nested_exception); |
0 | 479 } |
480 } | |
481 | |
6934 | 482 // 4. check if klass is not interface |
483 if (resolved_klass->is_interface() && resolved_method->is_abstract()) { | |
484 ResourceMark rm(THREAD); | |
485 char buf[200]; | |
486 jio_snprintf(buf, sizeof(buf), "Found interface %s, but class was expected", | |
487 resolved_klass()->external_name()); | |
488 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); | |
489 } | |
490 | |
0 | 491 // 5. check if method is concrete |
492 if (resolved_method->is_abstract() && !resolved_klass->is_abstract()) { | |
493 ResourceMark rm(THREAD); | |
494 THROW_MSG(vmSymbols::java_lang_AbstractMethodError(), | |
6983 | 495 Method::name_and_sig_as_C_string(resolved_klass(), |
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496 method_name, |
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497 method_signature)); |
0 | 498 } |
499 | |
500 // 6. access checks, access checking may be turned off when calling from within the VM. | |
501 if (check_access) { | |
502 assert(current_klass.not_null() , "current_klass should not be null"); | |
503 | |
504 // check if method can be accessed by the referring class | |
505 check_method_accessability(current_klass, | |
506 resolved_klass, | |
507 KlassHandle(THREAD, resolved_method->method_holder()), | |
508 resolved_method, | |
509 CHECK); | |
510 | |
511 // check loader constraints | |
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512 Handle loader (THREAD, InstanceKlass::cast(current_klass())->class_loader()); |
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513 Handle class_loader (THREAD, resolved_method->method_holder()->class_loader()); |
0 | 514 { |
515 ResourceMark rm(THREAD); | |
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516 Symbol* failed_type_symbol = |
0 | 517 SystemDictionary::check_signature_loaders(method_signature, loader, |
518 class_loader, true, CHECK); | |
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519 if (failed_type_symbol != NULL) { |
0 | 520 const char* msg = "loader constraint violation: when resolving method" |
521 " \"%s\" the class loader (instance of %s) of the current class, %s," | |
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522 " and the class loader (instance of %s) for the method's defining class, %s, have" |
0 | 523 " different Class objects for the type %s used in the signature"; |
6983 | 524 char* sig = Method::name_and_sig_as_C_string(resolved_klass(),method_name,method_signature); |
0 | 525 const char* loader1 = SystemDictionary::loader_name(loader()); |
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526 char* current = InstanceKlass::cast(current_klass())->name()->as_C_string(); |
0 | 527 const char* loader2 = SystemDictionary::loader_name(class_loader()); |
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528 char* target = InstanceKlass::cast(resolved_method->method_holder()) |
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529 ->name()->as_C_string(); |
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530 char* failed_type_name = failed_type_symbol->as_C_string(); |
0 | 531 size_t buflen = strlen(msg) + strlen(sig) + strlen(loader1) + |
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532 strlen(current) + strlen(loader2) + strlen(target) + |
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533 strlen(failed_type_name) + 1; |
0 | 534 char* buf = NEW_RESOURCE_ARRAY_IN_THREAD(THREAD, char, buflen); |
535 jio_snprintf(buf, buflen, msg, sig, loader1, current, loader2, | |
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536 target, failed_type_name); |
0 | 537 THROW_MSG(vmSymbols::java_lang_LinkageError(), buf); |
538 } | |
539 } | |
540 } | |
541 } | |
542 | |
543 void LinkResolver::resolve_interface_method(methodHandle& resolved_method, | |
544 KlassHandle resolved_klass, | |
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545 Symbol* method_name, |
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546 Symbol* method_signature, |
0 | 547 KlassHandle current_klass, |
548 bool check_access, TRAPS) { | |
549 | |
550 // check if klass is interface | |
551 if (!resolved_klass->is_interface()) { | |
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552 ResourceMark rm(THREAD); |
0 | 553 char buf[200]; |
6983 | 554 jio_snprintf(buf, sizeof(buf), "Found class %s, but interface was expected", resolved_klass()->external_name()); |
0 | 555 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); |
556 } | |
557 | |
558 // lookup method in this interface or its super, java.lang.Object | |
559 lookup_instance_method_in_klasses(resolved_method, resolved_klass, method_name, method_signature, CHECK); | |
560 | |
561 if (resolved_method.is_null()) { | |
562 // lookup method in all the super-interfaces | |
563 lookup_method_in_interfaces(resolved_method, resolved_klass, method_name, method_signature, CHECK); | |
564 if (resolved_method.is_null()) { | |
565 // no method found | |
566 ResourceMark rm(THREAD); | |
567 THROW_MSG(vmSymbols::java_lang_NoSuchMethodError(), | |
6983 | 568 Method::name_and_sig_as_C_string(resolved_klass(), |
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569 method_name, |
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570 method_signature)); |
0 | 571 } |
572 } | |
573 | |
574 if (check_access) { | |
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575 // JDK8 adds non-public interface methods, and accessability check requirement |
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576 assert(current_klass.not_null() , "current_klass should not be null"); |
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577 |
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578 // check if method can be accessed by the referring class |
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579 check_method_accessability(current_klass, |
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580 resolved_klass, |
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581 KlassHandle(THREAD, resolved_method->method_holder()), |
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582 resolved_method, |
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583 CHECK); |
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584 |
0 | 585 HandleMark hm(THREAD); |
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586 Handle loader (THREAD, InstanceKlass::cast(current_klass())->class_loader()); |
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587 Handle class_loader (THREAD, resolved_method->method_holder()->class_loader()); |
0 | 588 { |
589 ResourceMark rm(THREAD); | |
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590 Symbol* failed_type_symbol = |
0 | 591 SystemDictionary::check_signature_loaders(method_signature, loader, |
592 class_loader, true, CHECK); | |
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593 if (failed_type_symbol != NULL) { |
0 | 594 const char* msg = "loader constraint violation: when resolving " |
595 "interface method \"%s\" the class loader (instance of %s) of the " | |
596 "current class, %s, and the class loader (instance of %s) for " | |
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597 "the method's defining class, %s, have different Class objects for the type %s " |
0 | 598 "used in the signature"; |
6983 | 599 char* sig = Method::name_and_sig_as_C_string(resolved_klass(),method_name,method_signature); |
0 | 600 const char* loader1 = SystemDictionary::loader_name(loader()); |
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601 char* current = InstanceKlass::cast(current_klass())->name()->as_C_string(); |
0 | 602 const char* loader2 = SystemDictionary::loader_name(class_loader()); |
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603 char* target = InstanceKlass::cast(resolved_method->method_holder()) |
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604 ->name()->as_C_string(); |
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605 char* failed_type_name = failed_type_symbol->as_C_string(); |
0 | 606 size_t buflen = strlen(msg) + strlen(sig) + strlen(loader1) + |
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607 strlen(current) + strlen(loader2) + strlen(target) + |
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608 strlen(failed_type_name) + 1; |
0 | 609 char* buf = NEW_RESOURCE_ARRAY_IN_THREAD(THREAD, char, buflen); |
610 jio_snprintf(buf, buflen, msg, sig, loader1, current, loader2, | |
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611 target, failed_type_name); |
0 | 612 THROW_MSG(vmSymbols::java_lang_LinkageError(), buf); |
613 } | |
614 } | |
615 } | |
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616 |
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617 if (TraceItables && Verbose) { |
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618 ResourceMark rm(THREAD); |
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619 tty->print("invokeinterface resolved method: caller-class:%s, compile-time-class:%s, method:%s, method_holder:%s, access_flags: ", |
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620 (current_klass.is_null() ? "<NULL>" : current_klass->internal_name()), |
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621 (resolved_klass.is_null() ? "<NULL>" : resolved_klass->internal_name()), |
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622 Method::name_and_sig_as_C_string(resolved_klass(), |
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623 resolved_method->name(), |
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624 resolved_method->signature()), |
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625 resolved_method->method_holder()->internal_name() |
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626 ); |
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627 resolved_method->access_flags().print_on(tty); |
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628 tty->cr(); |
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629 } |
0 | 630 } |
631 | |
632 //------------------------------------------------------------------------------------------------------------------------ | |
633 // Field resolution | |
634 | |
635 void LinkResolver::check_field_accessability(KlassHandle ref_klass, | |
636 KlassHandle resolved_klass, | |
637 KlassHandle sel_klass, | |
638 fieldDescriptor& fd, | |
639 TRAPS) { | |
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640 if (!Reflection::verify_field_access(ref_klass(), |
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641 resolved_klass(), |
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642 sel_klass(), |
0 | 643 fd.access_flags(), |
644 true)) { | |
645 ResourceMark rm(THREAD); | |
646 Exceptions::fthrow( | |
647 THREAD_AND_LOCATION, | |
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648 vmSymbols::java_lang_IllegalAccessError(), |
0 | 649 "tried to access field %s.%s from class %s", |
650 sel_klass->external_name(), | |
651 fd.name()->as_C_string(), | |
652 ref_klass->external_name() | |
653 ); | |
654 return; | |
655 } | |
656 } | |
657 | |
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658 void LinkResolver::resolve_field_access(fieldDescriptor& result, constantPoolHandle pool, int index, Bytecodes::Code byte, TRAPS) { |
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659 resolve_field_access(result, pool, index, byte, true, true, THREAD); |
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660 } |
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661 |
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662 void LinkResolver::resolve_field_access(fieldDescriptor& result, constantPoolHandle pool, int index, Bytecodes::Code byte, bool check_access, bool initialize_class, TRAPS) { |
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663 // Load these early in case the resolve of the containing klass fails |
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664 Symbol* field = pool->name_ref_at(index); |
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665 Symbol* sig = pool->signature_ref_at(index); |
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666 |
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667 // resolve specified klass |
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668 KlassHandle resolved_klass; |
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669 resolve_klass(resolved_klass, pool, index, CHECK); |
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670 |
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671 KlassHandle current_klass(THREAD, pool->pool_holder()); |
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672 resolve_field(result, resolved_klass, field, sig, current_klass, byte, check_access, initialize_class, CHECK); |
0 | 673 } |
674 | |
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675 void LinkResolver::resolve_field(fieldDescriptor& fd, KlassHandle resolved_klass, Symbol* field, Symbol* sig, |
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676 KlassHandle current_klass, Bytecodes::Code byte, bool check_access, bool initialize_class, |
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677 TRAPS) { |
0 | 678 assert(byte == Bytecodes::_getstatic || byte == Bytecodes::_putstatic || |
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679 byte == Bytecodes::_getfield || byte == Bytecodes::_putfield || |
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680 (byte == Bytecodes::_nop && !check_access), "bad field access bytecode"); |
0 | 681 |
682 bool is_static = (byte == Bytecodes::_getstatic || byte == Bytecodes::_putstatic); | |
683 bool is_put = (byte == Bytecodes::_putfield || byte == Bytecodes::_putstatic); | |
684 | |
685 // Check if there's a resolved klass containing the field | |
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686 if (resolved_klass.is_null()) { |
0 | 687 ResourceMark rm(THREAD); |
688 THROW_MSG(vmSymbols::java_lang_NoSuchFieldError(), field->as_C_string()); | |
689 } | |
690 | |
691 // Resolve instance field | |
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692 KlassHandle sel_klass(THREAD, InstanceKlass::cast(resolved_klass())->find_field(field, sig, &fd)); |
0 | 693 // check if field exists; i.e., if a klass containing the field def has been selected |
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694 if (sel_klass.is_null()) { |
0 | 695 ResourceMark rm(THREAD); |
696 THROW_MSG(vmSymbols::java_lang_NoSuchFieldError(), field->as_C_string()); | |
697 } | |
698 | |
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699 if (!check_access) |
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700 // Access checking may be turned off when calling from within the VM. |
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701 return; |
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702 |
0 | 703 // check access |
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704 check_field_accessability(current_klass, resolved_klass, sel_klass, fd, CHECK); |
0 | 705 |
706 // check for errors | |
707 if (is_static != fd.is_static()) { | |
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708 ResourceMark rm(THREAD); |
0 | 709 char msg[200]; |
6983 | 710 jio_snprintf(msg, sizeof(msg), "Expected %s field %s.%s", is_static ? "static" : "non-static", resolved_klass()->external_name(), fd.name()->as_C_string()); |
0 | 711 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), msg); |
712 } | |
713 | |
714 // Final fields can only be accessed from its own class. | |
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715 if (is_put && fd.access_flags().is_final() && sel_klass() != current_klass()) { |
0 | 716 THROW(vmSymbols::java_lang_IllegalAccessError()); |
717 } | |
718 | |
719 // initialize resolved_klass if necessary | |
720 // note 1: the klass which declared the field must be initialized (i.e, sel_klass) | |
721 // according to the newest JVM spec (5.5, p.170) - was bug (gri 7/28/99) | |
722 // | |
723 // note 2: we don't want to force initialization if we are just checking | |
724 // if the field access is legal; e.g., during compilation | |
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725 if (is_static && initialize_class) { |
0 | 726 sel_klass->initialize(CHECK); |
727 } | |
728 | |
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729 if (sel_klass() != current_klass()) { |
0 | 730 HandleMark hm(THREAD); |
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731 Handle ref_loader (THREAD, InstanceKlass::cast(current_klass())->class_loader()); |
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732 Handle sel_loader (THREAD, InstanceKlass::cast(sel_klass())->class_loader()); |
0 | 733 { |
734 ResourceMark rm(THREAD); | |
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735 Symbol* failed_type_symbol = |
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736 SystemDictionary::check_signature_loaders(sig, |
0 | 737 ref_loader, sel_loader, |
738 false, | |
739 CHECK); | |
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740 if (failed_type_symbol != NULL) { |
0 | 741 const char* msg = "loader constraint violation: when resolving field" |
742 " \"%s\" the class loader (instance of %s) of the referring class, " | |
743 "%s, and the class loader (instance of %s) for the field's resolved " | |
744 "type, %s, have different Class objects for that type"; | |
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745 char* field_name = field->as_C_string(); |
0 | 746 const char* loader1 = SystemDictionary::loader_name(ref_loader()); |
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747 char* sel = InstanceKlass::cast(sel_klass())->name()->as_C_string(); |
0 | 748 const char* loader2 = SystemDictionary::loader_name(sel_loader()); |
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749 char* failed_type_name = failed_type_symbol->as_C_string(); |
0 | 750 size_t buflen = strlen(msg) + strlen(field_name) + strlen(loader1) + |
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751 strlen(sel) + strlen(loader2) + strlen(failed_type_name) + 1; |
0 | 752 char* buf = NEW_RESOURCE_ARRAY_IN_THREAD(THREAD, char, buflen); |
753 jio_snprintf(buf, buflen, msg, field_name, loader1, sel, loader2, | |
754 failed_type_name); | |
755 THROW_MSG(vmSymbols::java_lang_LinkageError(), buf); | |
756 } | |
757 } | |
758 } | |
759 | |
760 // return information. note that the klass is set to the actual klass containing the | |
761 // field, otherwise access of static fields in superclasses will not work. | |
762 } | |
763 | |
764 | |
765 //------------------------------------------------------------------------------------------------------------------------ | |
766 // Invoke resolution | |
767 // | |
768 // Naming conventions: | |
769 // | |
770 // resolved_method the specified method (i.e., static receiver specified via constant pool index) | |
771 // sel_method the selected method (selected via run-time lookup; e.g., based on dynamic receiver class) | |
772 // resolved_klass the specified klass (i.e., specified via constant pool index) | |
773 // recv_klass the receiver klass | |
774 | |
775 | |
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776 void LinkResolver::resolve_static_call(CallInfo& result, KlassHandle& resolved_klass, Symbol* method_name, |
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777 Symbol* method_signature, KlassHandle current_klass, |
0 | 778 bool check_access, bool initialize_class, TRAPS) { |
779 methodHandle resolved_method; | |
780 linktime_resolve_static_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK); | |
6983 | 781 resolved_klass = KlassHandle(THREAD, resolved_method->method_holder()); |
0 | 782 |
783 // Initialize klass (this should only happen if everything is ok) | |
784 if (initialize_class && resolved_klass->should_be_initialized()) { | |
785 resolved_klass->initialize(CHECK); | |
786 linktime_resolve_static_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK); | |
787 } | |
788 | |
789 // setup result | |
790 result.set_static(resolved_klass, resolved_method, CHECK); | |
791 } | |
792 | |
793 // throws linktime exceptions | |
794 void LinkResolver::linktime_resolve_static_method(methodHandle& resolved_method, KlassHandle resolved_klass, | |
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795 Symbol* method_name, Symbol* method_signature, |
0 | 796 KlassHandle current_klass, bool check_access, TRAPS) { |
797 | |
798 resolve_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK); | |
799 assert(resolved_method->name() != vmSymbols::class_initializer_name(), "should have been checked in verifier"); | |
800 | |
801 // check if static | |
802 if (!resolved_method->is_static()) { | |
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803 ResourceMark rm(THREAD); |
0 | 804 char buf[200]; |
6983 | 805 jio_snprintf(buf, sizeof(buf), "Expected static method %s", Method::name_and_sig_as_C_string(resolved_klass(), |
0 | 806 resolved_method->name(), |
807 resolved_method->signature())); | |
808 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); | |
809 } | |
810 } | |
811 | |
812 | |
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813 void LinkResolver::resolve_special_call(CallInfo& result, KlassHandle resolved_klass, Symbol* method_name, |
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814 Symbol* method_signature, KlassHandle current_klass, bool check_access, TRAPS) { |
0 | 815 methodHandle resolved_method; |
816 linktime_resolve_special_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK); | |
817 runtime_resolve_special_method(result, resolved_method, resolved_klass, current_klass, check_access, CHECK); | |
818 } | |
819 | |
820 // throws linktime exceptions | |
821 void LinkResolver::linktime_resolve_special_method(methodHandle& resolved_method, KlassHandle resolved_klass, | |
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822 Symbol* method_name, Symbol* method_signature, |
0 | 823 KlassHandle current_klass, bool check_access, TRAPS) { |
824 | |
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825 // Invokespecial is called for multiple special reasons: |
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826 // <init> |
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827 // local private method invocation, for classes and interfaces |
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828 // superclass.method, which can also resolve to a default method |
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829 // and the selected method is recalculated relative to the direct superclass |
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830 // superinterface.method, which explicitly does not check shadowing |
6934 | 831 |
0 | 832 resolve_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK); |
833 | |
834 // check if method name is <init>, that it is found in same klass as static type | |
835 if (resolved_method->name() == vmSymbols::object_initializer_name() && | |
836 resolved_method->method_holder() != resolved_klass()) { | |
837 ResourceMark rm(THREAD); | |
838 Exceptions::fthrow( | |
839 THREAD_AND_LOCATION, | |
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840 vmSymbols::java_lang_NoSuchMethodError(), |
0 | 841 "%s: method %s%s not found", |
842 resolved_klass->external_name(), | |
843 resolved_method->name()->as_C_string(), | |
844 resolved_method->signature()->as_C_string() | |
845 ); | |
846 return; | |
847 } | |
848 | |
849 // check if not static | |
850 if (resolved_method->is_static()) { | |
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851 ResourceMark rm(THREAD); |
0 | 852 char buf[200]; |
853 jio_snprintf(buf, sizeof(buf), | |
854 "Expecting non-static method %s", | |
6983 | 855 Method::name_and_sig_as_C_string(resolved_klass(), |
0 | 856 resolved_method->name(), |
857 resolved_method->signature())); | |
858 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); | |
859 } | |
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860 if (TraceItables && Verbose) { |
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861 ResourceMark rm(THREAD); |
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862 tty->print("invokespecial resolved method: caller-class:%s, compile-time-class:%s, method:%s, method_holder:%s, access_flags: ", |
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863 (current_klass.is_null() ? "<NULL>" : current_klass->internal_name()), |
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864 (resolved_klass.is_null() ? "<NULL>" : resolved_klass->internal_name()), |
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865 Method::name_and_sig_as_C_string(resolved_klass(), |
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866 resolved_method->name(), |
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867 resolved_method->signature()), |
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868 resolved_method->method_holder()->internal_name() |
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869 ); |
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870 resolved_method->access_flags().print_on(tty); |
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871 if (resolved_method->method_holder()->is_interface() && |
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872 !resolved_method->is_abstract()) { |
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873 tty->print("default"); |
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874 } |
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875 if (resolved_method->is_overpass()) { |
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876 tty->print("overpass"); |
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877 } |
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878 tty->cr(); |
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879 } |
0 | 880 } |
881 | |
882 // throws runtime exceptions | |
883 void LinkResolver::runtime_resolve_special_method(CallInfo& result, methodHandle resolved_method, KlassHandle resolved_klass, | |
884 KlassHandle current_klass, bool check_access, TRAPS) { | |
885 | |
886 // resolved method is selected method unless we have an old-style lookup | |
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887 // for a superclass method |
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888 // Invokespecial for a superinterface, resolved method is selected method, |
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889 // no checks for shadowing |
0 | 890 methodHandle sel_method(THREAD, resolved_method()); |
891 | |
892 // check if this is an old-style super call and do a new lookup if so | |
893 { KlassHandle method_klass = KlassHandle(THREAD, | |
894 resolved_method->method_holder()); | |
895 | |
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896 if (check_access && |
0 | 897 // a) check if ACC_SUPER flag is set for the current class |
8702 | 898 (current_klass->is_super() || !AllowNonVirtualCalls) && |
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899 // b) check if the class of the resolved_klass is a superclass |
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900 // (not supertype in order to exclude interface classes) of the current class. |
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901 // This check is not performed for super.invoke for interface methods |
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902 // in super interfaces. |
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903 current_klass->is_subclass_of(resolved_klass()) && |
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904 current_klass() != resolved_klass() && |
0 | 905 // c) check if the method is not <init> |
906 resolved_method->name() != vmSymbols::object_initializer_name()) { | |
907 // Lookup super method | |
908 KlassHandle super_klass(THREAD, current_klass->super()); | |
909 lookup_instance_method_in_klasses(sel_method, super_klass, | |
2177
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910 resolved_method->name(), |
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911 resolved_method->signature(), CHECK); |
0 | 912 // check if found |
913 if (sel_method.is_null()) { | |
914 ResourceMark rm(THREAD); | |
915 THROW_MSG(vmSymbols::java_lang_AbstractMethodError(), | |
6983 | 916 Method::name_and_sig_as_C_string(resolved_klass(), |
0 | 917 resolved_method->name(), |
918 resolved_method->signature())); | |
919 } | |
920 } | |
921 } | |
922 | |
923 // check if not static | |
924 if (sel_method->is_static()) { | |
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925 ResourceMark rm(THREAD); |
0 | 926 char buf[200]; |
6983 | 927 jio_snprintf(buf, sizeof(buf), "Expecting non-static method %s", Method::name_and_sig_as_C_string(resolved_klass(), |
0 | 928 resolved_method->name(), |
929 resolved_method->signature())); | |
930 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); | |
931 } | |
932 | |
933 // check if abstract | |
934 if (sel_method->is_abstract()) { | |
935 ResourceMark rm(THREAD); | |
936 THROW_MSG(vmSymbols::java_lang_AbstractMethodError(), | |
6983 | 937 Method::name_and_sig_as_C_string(resolved_klass(), |
0 | 938 sel_method->name(), |
939 sel_method->signature())); | |
940 } | |
941 | |
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942 if (TraceItables && Verbose) { |
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943 ResourceMark rm(THREAD); |
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944 tty->print("invokespecial selected method: resolved-class:%s, method:%s, method_holder:%s, access_flags: ", |
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945 (resolved_klass.is_null() ? "<NULL>" : resolved_klass->internal_name()), |
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946 Method::name_and_sig_as_C_string(resolved_klass(), |
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947 sel_method->name(), |
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948 sel_method->signature()), |
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949 sel_method->method_holder()->internal_name() |
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950 ); |
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951 sel_method->access_flags().print_on(tty); |
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952 if (sel_method->method_holder()->is_interface() && |
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953 !sel_method->is_abstract()) { |
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954 tty->print("default"); |
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955 } |
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956 tty->cr(); |
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957 } |
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958 |
0 | 959 // setup result |
960 result.set_static(resolved_klass, sel_method, CHECK); | |
961 } | |
962 | |
963 void LinkResolver::resolve_virtual_call(CallInfo& result, Handle recv, KlassHandle receiver_klass, KlassHandle resolved_klass, | |
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964 Symbol* method_name, Symbol* method_signature, KlassHandle current_klass, |
0 | 965 bool check_access, bool check_null_and_abstract, TRAPS) { |
966 methodHandle resolved_method; | |
967 linktime_resolve_virtual_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK); | |
968 runtime_resolve_virtual_method(result, resolved_method, resolved_klass, recv, receiver_klass, check_null_and_abstract, CHECK); | |
969 } | |
970 | |
971 // throws linktime exceptions | |
972 void LinkResolver::linktime_resolve_virtual_method(methodHandle &resolved_method, KlassHandle resolved_klass, | |
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973 Symbol* method_name, Symbol* method_signature, |
0 | 974 KlassHandle current_klass, bool check_access, TRAPS) { |
975 // normal method resolution | |
976 resolve_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK); | |
977 | |
978 assert(resolved_method->name() != vmSymbols::object_initializer_name(), "should have been checked in verifier"); | |
979 assert(resolved_method->name() != vmSymbols::class_initializer_name (), "should have been checked in verifier"); | |
980 | |
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981 // check if private interface method |
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982 if (resolved_klass->is_interface() && resolved_method->is_private()) { |
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983 ResourceMark rm(THREAD); |
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984 char buf[200]; |
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985 jio_snprintf(buf, sizeof(buf), "private interface method requires invokespecial, not invokevirtual: method %s, caller-class:%s", |
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986 Method::name_and_sig_as_C_string(resolved_klass(), |
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987 resolved_method->name(), |
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988 resolved_method->signature()), |
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989 (current_klass.is_null() ? "<NULL>" : current_klass->internal_name())); |
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990 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); |
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991 } |
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992 |
0 | 993 // check if not static |
994 if (resolved_method->is_static()) { | |
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995 ResourceMark rm(THREAD); |
0 | 996 char buf[200]; |
6983 | 997 jio_snprintf(buf, sizeof(buf), "Expecting non-static method %s", Method::name_and_sig_as_C_string(resolved_klass(), |
0 | 998 resolved_method->name(), |
999 resolved_method->signature())); | |
1000 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); | |
1001 } | |
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1002 |
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1003 if (PrintVtables && Verbose) { |
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1004 ResourceMark rm(THREAD); |
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1005 tty->print("invokevirtual resolved method: caller-class:%s, compile-time-class:%s, method:%s, method_holder:%s, access_flags: ", |
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1006 (current_klass.is_null() ? "<NULL>" : current_klass->internal_name()), |
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1007 (resolved_klass.is_null() ? "<NULL>" : resolved_klass->internal_name()), |
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1008 Method::name_and_sig_as_C_string(resolved_klass(), |
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1009 resolved_method->name(), |
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1010 resolved_method->signature()), |
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1011 resolved_method->method_holder()->internal_name() |
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1012 ); |
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1013 resolved_method->access_flags().print_on(tty); |
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1014 if (resolved_method->method_holder()->is_interface() && |
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1015 !resolved_method->is_abstract()) { |
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1016 tty->print("default"); |
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1017 } |
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1018 if (resolved_method->is_overpass()) { |
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1019 tty->print("overpass"); |
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1020 } |
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1021 tty->cr(); |
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1022 } |
0 | 1023 } |
1024 | |
1025 // throws runtime exceptions | |
1026 void LinkResolver::runtime_resolve_virtual_method(CallInfo& result, | |
1027 methodHandle resolved_method, | |
1028 KlassHandle resolved_klass, | |
1029 Handle recv, | |
1030 KlassHandle recv_klass, | |
1031 bool check_null_and_abstract, | |
1032 TRAPS) { | |
1033 | |
1034 // setup default return values | |
6725
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1035 int vtable_index = Method::invalid_vtable_index; |
0 | 1036 methodHandle selected_method; |
1037 | |
1038 assert(recv.is_null() || recv->is_oop(), "receiver is not an oop"); | |
1039 | |
1040 // runtime method resolution | |
1041 if (check_null_and_abstract && recv.is_null()) { // check if receiver exists | |
1042 THROW(vmSymbols::java_lang_NullPointerException()); | |
1043 } | |
1044 | |
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1045 // Virtual methods cannot be resolved before its klass has been linked, for otherwise the Method*'s |
0 | 1046 // has not been rewritten, and the vtable initialized. Make sure to do this after the nullcheck, since |
1047 // a missing receiver might result in a bogus lookup. | |
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1048 assert(resolved_method->method_holder()->is_linked(), "must be linked"); |
0 | 1049 |
1050 // do lookup based on receiver klass using the vtable index | |
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1051 if (resolved_method->method_holder()->is_interface()) { // miranda method |
0 | 1052 vtable_index = vtable_index_of_miranda_method(resolved_klass, |
2177
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1053 resolved_method->name(), |
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1054 resolved_method->signature(), CHECK); |
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1055 |
0 | 1056 assert(vtable_index >= 0 , "we should have valid vtable index at this point"); |
1057 | |
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1058 InstanceKlass* inst = InstanceKlass::cast(recv_klass()); |
0 | 1059 selected_method = methodHandle(THREAD, inst->method_at_vtable(vtable_index)); |
1060 } else { | |
1061 // at this point we are sure that resolved_method is virtual and not | |
1062 // a miranda method; therefore, it must have a valid vtable index. | |
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1063 assert(!resolved_method->has_itable_index(), ""); |
0 | 1064 vtable_index = resolved_method->vtable_index(); |
1065 // We could get a negative vtable_index for final methods, | |
1066 // because as an optimization they are they are never put in the vtable, | |
1067 // unless they override an existing method. | |
1068 // If we do get a negative, it means the resolved method is the the selected | |
1069 // method, and it can never be changed by an override. | |
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1070 if (vtable_index == Method::nonvirtual_vtable_index) { |
0 | 1071 assert(resolved_method->can_be_statically_bound(), "cannot override this method"); |
1072 selected_method = resolved_method; | |
1073 } else { | |
1074 // recv_klass might be an arrayKlassOop but all vtables start at | |
1075 // the same place. The cast is to avoid virtual call and assertion. | |
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1076 InstanceKlass* inst = (InstanceKlass*)recv_klass(); |
0 | 1077 selected_method = methodHandle(THREAD, inst->method_at_vtable(vtable_index)); |
1078 } | |
1079 } | |
1080 | |
1081 // check if method exists | |
1082 if (selected_method.is_null()) { | |
1083 ResourceMark rm(THREAD); | |
1084 THROW_MSG(vmSymbols::java_lang_AbstractMethodError(), | |
6983 | 1085 Method::name_and_sig_as_C_string(resolved_klass(), |
0 | 1086 resolved_method->name(), |
1087 resolved_method->signature())); | |
1088 } | |
1089 | |
1090 // check if abstract | |
1091 if (check_null_and_abstract && selected_method->is_abstract()) { | |
1092 ResourceMark rm(THREAD); | |
1093 THROW_MSG(vmSymbols::java_lang_AbstractMethodError(), | |
6983 | 1094 Method::name_and_sig_as_C_string(resolved_klass(), |
0 | 1095 selected_method->name(), |
1096 selected_method->signature())); | |
1097 } | |
1098 | |
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1099 if (PrintVtables && Verbose) { |
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1100 ResourceMark rm(THREAD); |
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1101 tty->print("invokevirtual selected method: receiver-class:%s, resolved-class:%s, method:%s, method_holder:%s, vtable_index:%d, access_flags: ", |
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1102 (recv_klass.is_null() ? "<NULL>" : recv_klass->internal_name()), |
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1103 (resolved_klass.is_null() ? "<NULL>" : resolved_klass->internal_name()), |
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1104 Method::name_and_sig_as_C_string(resolved_klass(), |
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1105 resolved_method->name(), |
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1106 resolved_method->signature()), |
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1107 selected_method->method_holder()->internal_name(), |
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1108 vtable_index |
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1109 ); |
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1110 selected_method->access_flags().print_on(tty); |
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1111 if (selected_method->method_holder()->is_interface() && |
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1112 !selected_method->is_abstract()) { |
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1113 tty->print("default"); |
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1114 } |
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1115 if (resolved_method->is_overpass()) { |
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1116 tty->print("overpass"); |
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1117 } |
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1118 tty->cr(); |
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1119 } |
0 | 1120 // setup result |
1121 result.set_virtual(resolved_klass, recv_klass, resolved_method, selected_method, vtable_index, CHECK); | |
1122 } | |
1123 | |
1124 void LinkResolver::resolve_interface_call(CallInfo& result, Handle recv, KlassHandle recv_klass, KlassHandle resolved_klass, | |
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1125 Symbol* method_name, Symbol* method_signature, KlassHandle current_klass, |
0 | 1126 bool check_access, bool check_null_and_abstract, TRAPS) { |
1127 methodHandle resolved_method; | |
1128 linktime_resolve_interface_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK); | |
1129 runtime_resolve_interface_method(result, resolved_method, resolved_klass, recv, recv_klass, check_null_and_abstract, CHECK); | |
1130 } | |
1131 | |
1132 // throws linktime exceptions | |
2177
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1133 void LinkResolver::linktime_resolve_interface_method(methodHandle& resolved_method, KlassHandle resolved_klass, Symbol* method_name, |
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1134 Symbol* method_signature, KlassHandle current_klass, bool check_access, TRAPS) { |
0 | 1135 // normal interface method resolution |
1136 resolve_interface_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK); | |
1137 | |
1138 assert(resolved_method->name() != vmSymbols::object_initializer_name(), "should have been checked in verifier"); | |
1139 assert(resolved_method->name() != vmSymbols::class_initializer_name (), "should have been checked in verifier"); | |
1140 } | |
1141 | |
1142 // throws runtime exceptions | |
1143 void LinkResolver::runtime_resolve_interface_method(CallInfo& result, methodHandle resolved_method, KlassHandle resolved_klass, | |
1144 Handle recv, KlassHandle recv_klass, bool check_null_and_abstract, TRAPS) { | |
1145 // check if receiver exists | |
1146 if (check_null_and_abstract && recv.is_null()) { | |
1147 THROW(vmSymbols::java_lang_NullPointerException()); | |
1148 } | |
1149 | |
12318
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1150 // check if private interface method |
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1151 if (resolved_klass->is_interface() && resolved_method->is_private()) { |
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1152 ResourceMark rm(THREAD); |
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1153 char buf[200]; |
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1154 jio_snprintf(buf, sizeof(buf), "private interface method requires invokespecial, not invokeinterface: method %s", |
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1155 Method::name_and_sig_as_C_string(resolved_klass(), |
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1156 resolved_method->name(), |
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1157 resolved_method->signature())); |
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1158 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); |
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1159 } |
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1160 |
0 | 1161 // check if receiver klass implements the resolved interface |
1162 if (!recv_klass->is_subtype_of(resolved_klass())) { | |
3324
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|
1163 ResourceMark rm(THREAD); |
0 | 1164 char buf[200]; |
1165 jio_snprintf(buf, sizeof(buf), "Class %s does not implement the requested interface %s", | |
6983 | 1166 recv_klass()->external_name(), |
1167 resolved_klass()->external_name()); | |
0 | 1168 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); |
1169 } | |
1170 // do lookup based on receiver klass | |
1171 methodHandle sel_method; | |
1172 lookup_instance_method_in_klasses(sel_method, recv_klass, | |
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1173 resolved_method->name(), |
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1174 resolved_method->signature(), CHECK); |
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1175 if (sel_method.is_null() && !check_null_and_abstract) { |
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1176 // In theory this is a harmless placeholder value, but |
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1177 // in practice leaving in null affects the nsk default method tests. |
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1178 // This needs further study. |
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1179 sel_method = resolved_method; |
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1180 } |
0 | 1181 // check if method exists |
1182 if (sel_method.is_null()) { | |
1183 ResourceMark rm(THREAD); | |
1184 THROW_MSG(vmSymbols::java_lang_AbstractMethodError(), | |
6983 | 1185 Method::name_and_sig_as_C_string(recv_klass(), |
0 | 1186 resolved_method->name(), |
1187 resolved_method->signature())); | |
1188 } | |
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1189 // check access |
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1190 // Throw Illegal Access Error if sel_method is not public. |
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1191 if (!sel_method->is_public()) { |
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1192 ResourceMark rm(THREAD); |
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1193 THROW_MSG(vmSymbols::java_lang_IllegalAccessError(), |
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1194 Method::name_and_sig_as_C_string(recv_klass(), |
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1195 sel_method->name(), |
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1196 sel_method->signature())); |
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|
1197 } |
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1198 |
0 | 1199 // check if abstract |
1200 if (check_null_and_abstract && sel_method->is_abstract()) { | |
1201 ResourceMark rm(THREAD); | |
1202 THROW_MSG(vmSymbols::java_lang_AbstractMethodError(), | |
6983 | 1203 Method::name_and_sig_as_C_string(recv_klass(), |
0 | 1204 sel_method->name(), |
1205 sel_method->signature())); | |
1206 } | |
1207 // setup result | |
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1208 if (!resolved_method->has_itable_index()) { |
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1209 int vtable_index = resolved_method->vtable_index(); |
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1210 assert(vtable_index == sel_method->vtable_index(), "sanity check"); |
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|
1211 result.set_virtual(resolved_klass, recv_klass, resolved_method, sel_method, vtable_index, CHECK); |
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1212 return; |
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|
1213 } |
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1214 int itable_index = resolved_method()->itable_index(); |
12318
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|
1215 |
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|
1216 if (TraceItables && Verbose) { |
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|
1217 ResourceMark rm(THREAD); |
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|
1218 tty->print("invokeinterface selected method: receiver-class:%s, resolved-class:%s, method:%s, method_holder:%s, access_flags: ", |
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|
1219 (recv_klass.is_null() ? "<NULL>" : recv_klass->internal_name()), |
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|
1220 (resolved_klass.is_null() ? "<NULL>" : resolved_klass->internal_name()), |
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|
1221 Method::name_and_sig_as_C_string(resolved_klass(), |
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|
1222 resolved_method->name(), |
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|
1223 resolved_method->signature()), |
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|
1224 sel_method->method_holder()->internal_name() |
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|
1225 ); |
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|
1226 sel_method->access_flags().print_on(tty); |
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|
1227 if (sel_method->method_holder()->is_interface() && |
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|
1228 !sel_method->is_abstract()) { |
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|
1229 tty->print("default"); |
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|
1230 } |
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|
1231 if (resolved_method->is_overpass()) { |
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|
1232 tty->print("overpass"); |
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|
1233 } |
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|
1234 tty->cr(); |
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|
1235 } |
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1236 result.set_interface(resolved_klass, recv_klass, resolved_method, sel_method, itable_index, CHECK); |
0 | 1237 } |
1238 | |
1239 | |
1240 methodHandle LinkResolver::linktime_resolve_interface_method_or_null( | |
1241 KlassHandle resolved_klass, | |
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1242 Symbol* method_name, |
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1243 Symbol* method_signature, |
0 | 1244 KlassHandle current_klass, |
1245 bool check_access) { | |
1246 EXCEPTION_MARK; | |
1247 methodHandle method_result; | |
1248 linktime_resolve_interface_method(method_result, resolved_klass, method_name, method_signature, current_klass, check_access, THREAD); | |
1249 if (HAS_PENDING_EXCEPTION) { | |
1250 CLEAR_PENDING_EXCEPTION; | |
1251 return methodHandle(); | |
1252 } else { | |
1253 return method_result; | |
1254 } | |
1255 } | |
1256 | |
1257 methodHandle LinkResolver::linktime_resolve_virtual_method_or_null( | |
1258 KlassHandle resolved_klass, | |
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1259 Symbol* method_name, |
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1260 Symbol* method_signature, |
0 | 1261 KlassHandle current_klass, |
1262 bool check_access) { | |
1263 EXCEPTION_MARK; | |
1264 methodHandle method_result; | |
1265 linktime_resolve_virtual_method(method_result, resolved_klass, method_name, method_signature, current_klass, check_access, THREAD); | |
1266 if (HAS_PENDING_EXCEPTION) { | |
1267 CLEAR_PENDING_EXCEPTION; | |
1268 return methodHandle(); | |
1269 } else { | |
1270 return method_result; | |
1271 } | |
1272 } | |
1273 | |
1274 methodHandle LinkResolver::resolve_virtual_call_or_null( | |
1275 KlassHandle receiver_klass, | |
1276 KlassHandle resolved_klass, | |
2177
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|
1277 Symbol* name, |
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1278 Symbol* signature, |
0 | 1279 KlassHandle current_klass) { |
1280 EXCEPTION_MARK; | |
1281 CallInfo info; | |
1282 resolve_virtual_call(info, Handle(), receiver_klass, resolved_klass, name, signature, current_klass, true, false, THREAD); | |
1283 if (HAS_PENDING_EXCEPTION) { | |
1284 CLEAR_PENDING_EXCEPTION; | |
1285 return methodHandle(); | |
1286 } | |
1287 return info.selected_method(); | |
1288 } | |
1289 | |
1290 methodHandle LinkResolver::resolve_interface_call_or_null( | |
1291 KlassHandle receiver_klass, | |
1292 KlassHandle resolved_klass, | |
2177
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|
1293 Symbol* name, |
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|
1294 Symbol* signature, |
0 | 1295 KlassHandle current_klass) { |
1296 EXCEPTION_MARK; | |
1297 CallInfo info; | |
1298 resolve_interface_call(info, Handle(), receiver_klass, resolved_klass, name, signature, current_klass, true, false, THREAD); | |
1299 if (HAS_PENDING_EXCEPTION) { | |
1300 CLEAR_PENDING_EXCEPTION; | |
1301 return methodHandle(); | |
1302 } | |
1303 return info.selected_method(); | |
1304 } | |
1305 | |
1306 int LinkResolver::resolve_virtual_vtable_index( | |
1307 KlassHandle receiver_klass, | |
1308 KlassHandle resolved_klass, | |
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|
1309 Symbol* name, |
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|
1310 Symbol* signature, |
0 | 1311 KlassHandle current_klass) { |
1312 EXCEPTION_MARK; | |
1313 CallInfo info; | |
1314 resolve_virtual_call(info, Handle(), receiver_klass, resolved_klass, name, signature, current_klass, true, false, THREAD); | |
1315 if (HAS_PENDING_EXCEPTION) { | |
1316 CLEAR_PENDING_EXCEPTION; | |
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1317 return Method::invalid_vtable_index; |
0 | 1318 } |
1319 return info.vtable_index(); | |
1320 } | |
1321 | |
1322 methodHandle LinkResolver::resolve_static_call_or_null( | |
1323 KlassHandle resolved_klass, | |
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|
1324 Symbol* name, |
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|
1325 Symbol* signature, |
0 | 1326 KlassHandle current_klass) { |
1327 EXCEPTION_MARK; | |
1328 CallInfo info; | |
1329 resolve_static_call(info, resolved_klass, name, signature, current_klass, true, false, THREAD); | |
1330 if (HAS_PENDING_EXCEPTION) { | |
1331 CLEAR_PENDING_EXCEPTION; | |
1332 return methodHandle(); | |
1333 } | |
1334 return info.selected_method(); | |
1335 } | |
1336 | |
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|
1337 methodHandle LinkResolver::resolve_special_call_or_null(KlassHandle resolved_klass, Symbol* name, Symbol* signature, |
0 | 1338 KlassHandle current_klass) { |
1339 EXCEPTION_MARK; | |
1340 CallInfo info; | |
1341 resolve_special_call(info, resolved_klass, name, signature, current_klass, true, THREAD); | |
1342 if (HAS_PENDING_EXCEPTION) { | |
1343 CLEAR_PENDING_EXCEPTION; | |
1344 return methodHandle(); | |
1345 } | |
1346 return info.selected_method(); | |
1347 } | |
1348 | |
1349 | |
1350 | |
1351 //------------------------------------------------------------------------------------------------------------------------ | |
1352 // ConstantPool entries | |
1353 | |
1354 void LinkResolver::resolve_invoke(CallInfo& result, Handle recv, constantPoolHandle pool, int index, Bytecodes::Code byte, TRAPS) { | |
1355 switch (byte) { | |
1356 case Bytecodes::_invokestatic : resolve_invokestatic (result, pool, index, CHECK); break; | |
1357 case Bytecodes::_invokespecial : resolve_invokespecial (result, pool, index, CHECK); break; | |
1358 case Bytecodes::_invokevirtual : resolve_invokevirtual (result, recv, pool, index, CHECK); break; | |
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1359 case Bytecodes::_invokehandle : resolve_invokehandle (result, pool, index, CHECK); break; |
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1360 case Bytecodes::_invokedynamic : resolve_invokedynamic (result, pool, index, CHECK); break; |
0 | 1361 case Bytecodes::_invokeinterface: resolve_invokeinterface(result, recv, pool, index, CHECK); break; |
1362 } | |
1363 return; | |
1364 } | |
1365 | |
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|
1366 void LinkResolver::resolve_pool(KlassHandle& resolved_klass, Symbol*& method_name, Symbol*& method_signature, |
0 | 1367 KlassHandle& current_klass, constantPoolHandle pool, int index, TRAPS) { |
1368 // resolve klass | |
1369 resolve_klass(resolved_klass, pool, index, CHECK); | |
1370 | |
1371 // Get name, signature, and static klass | |
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1372 method_name = pool->name_ref_at(index); |
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|
1373 method_signature = pool->signature_ref_at(index); |
0 | 1374 current_klass = KlassHandle(THREAD, pool->pool_holder()); |
1375 } | |
1376 | |
1377 | |
1378 void LinkResolver::resolve_invokestatic(CallInfo& result, constantPoolHandle pool, int index, TRAPS) { | |
1379 KlassHandle resolved_klass; | |
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1380 Symbol* method_name = NULL; |
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|
1381 Symbol* method_signature = NULL; |
0 | 1382 KlassHandle current_klass; |
1383 resolve_pool(resolved_klass, method_name, method_signature, current_klass, pool, index, CHECK); | |
1384 resolve_static_call(result, resolved_klass, method_name, method_signature, current_klass, true, true, CHECK); | |
1385 } | |
1386 | |
1387 | |
1388 void LinkResolver::resolve_invokespecial(CallInfo& result, constantPoolHandle pool, int index, TRAPS) { | |
1389 KlassHandle resolved_klass; | |
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1390 Symbol* method_name = NULL; |
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|
1391 Symbol* method_signature = NULL; |
0 | 1392 KlassHandle current_klass; |
1393 resolve_pool(resolved_klass, method_name, method_signature, current_klass, pool, index, CHECK); | |
1394 resolve_special_call(result, resolved_klass, method_name, method_signature, current_klass, true, CHECK); | |
1395 } | |
1396 | |
1397 | |
1398 void LinkResolver::resolve_invokevirtual(CallInfo& result, Handle recv, | |
1399 constantPoolHandle pool, int index, | |
1400 TRAPS) { | |
1401 | |
1402 KlassHandle resolved_klass; | |
2177
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1403 Symbol* method_name = NULL; |
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|
1404 Symbol* method_signature = NULL; |
0 | 1405 KlassHandle current_klass; |
1406 resolve_pool(resolved_klass, method_name, method_signature, current_klass, pool, index, CHECK); | |
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1407 KlassHandle recvrKlass (THREAD, recv.is_null() ? (Klass*)NULL : recv->klass()); |
0 | 1408 resolve_virtual_call(result, recv, recvrKlass, resolved_klass, method_name, method_signature, current_klass, true, true, CHECK); |
1409 } | |
1410 | |
1411 | |
1412 void LinkResolver::resolve_invokeinterface(CallInfo& result, Handle recv, constantPoolHandle pool, int index, TRAPS) { | |
1413 KlassHandle resolved_klass; | |
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1414 Symbol* method_name = NULL; |
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1415 Symbol* method_signature = NULL; |
0 | 1416 KlassHandle current_klass; |
1417 resolve_pool(resolved_klass, method_name, method_signature, current_klass, pool, index, CHECK); | |
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1418 KlassHandle recvrKlass (THREAD, recv.is_null() ? (Klass*)NULL : recv->klass()); |
0 | 1419 resolve_interface_call(result, recv, recvrKlass, resolved_klass, method_name, method_signature, current_klass, true, true, CHECK); |
1420 } | |
1421 | |
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1422 |
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1423 void LinkResolver::resolve_invokehandle(CallInfo& result, constantPoolHandle pool, int index, TRAPS) { |
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|
1424 assert(EnableInvokeDynamic, ""); |
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1425 // This guy is reached from InterpreterRuntime::resolve_invokehandle. |
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|
1426 KlassHandle resolved_klass; |
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|
1427 Symbol* method_name = NULL; |
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1428 Symbol* method_signature = NULL; |
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|
1429 KlassHandle current_klass; |
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|
1430 resolve_pool(resolved_klass, method_name, method_signature, current_klass, pool, index, CHECK); |
9082 | 1431 if (TraceMethodHandles) { |
1432 ResourceMark rm(THREAD); | |
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1433 tty->print_cr("resolve_invokehandle %s %s", method_name->as_C_string(), method_signature->as_C_string()); |
9082 | 1434 } |
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1435 resolve_handle_call(result, resolved_klass, method_name, method_signature, current_klass, CHECK); |
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1436 } |
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1437 |
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1438 void LinkResolver::resolve_handle_call(CallInfo& result, KlassHandle resolved_klass, |
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1439 Symbol* method_name, Symbol* method_signature, |
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1440 KlassHandle current_klass, |
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1441 TRAPS) { |
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1442 // JSR 292: this must be an implicitly generated method MethodHandle.invokeExact(*...) or similar |
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1443 assert(resolved_klass() == SystemDictionary::MethodHandle_klass(), ""); |
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1444 assert(MethodHandles::is_signature_polymorphic_name(method_name), ""); |
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1445 methodHandle resolved_method; |
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1446 Handle resolved_appendix; |
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1447 Handle resolved_method_type; |
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1448 lookup_polymorphic_method(resolved_method, resolved_klass, |
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1449 method_name, method_signature, |
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1450 current_klass, &resolved_appendix, &resolved_method_type, CHECK); |
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1451 result.set_handle(resolved_method, resolved_appendix, resolved_method_type, CHECK); |
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1452 } |
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1453 |
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1454 |
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1455 void LinkResolver::resolve_invokedynamic(CallInfo& result, constantPoolHandle pool, int index, TRAPS) { |
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1456 assert(EnableInvokeDynamic, ""); |
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1457 |
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1458 //resolve_pool(<resolved_klass>, method_name, method_signature, current_klass, pool, index, CHECK); |
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1459 Symbol* method_name = pool->name_ref_at(index); |
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1460 Symbol* method_signature = pool->signature_ref_at(index); |
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1461 KlassHandle current_klass = KlassHandle(THREAD, pool->pool_holder()); |
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1462 |
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1463 // Resolve the bootstrap specifier (BSM + optional arguments). |
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1464 Handle bootstrap_specifier; |
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1465 // Check if CallSite has been bound already: |
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1466 ConstantPoolCacheEntry* cpce = pool->invokedynamic_cp_cache_entry_at(index); |
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1467 if (cpce->is_f1_null()) { |
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1468 int pool_index = cpce->constant_pool_index(); |
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1469 oop bsm_info = pool->resolve_bootstrap_specifier_at(pool_index, CHECK); |
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1470 assert(bsm_info != NULL, ""); |
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1471 // FIXME: Cache this once per BootstrapMethods entry, not once per CONSTANT_InvokeDynamic. |
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1472 bootstrap_specifier = Handle(THREAD, bsm_info); |
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1473 } |
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1474 if (!cpce->is_f1_null()) { |
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1475 methodHandle method( THREAD, cpce->f1_as_method()); |
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1476 Handle appendix( THREAD, cpce->appendix_if_resolved(pool)); |
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1477 Handle method_type(THREAD, cpce->method_type_if_resolved(pool)); |
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1478 result.set_handle(method, appendix, method_type, CHECK); |
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1479 return; |
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1480 } |
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1481 |
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1482 if (TraceMethodHandles) { |
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1483 ResourceMark rm(THREAD); |
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1484 tty->print_cr("resolve_invokedynamic #%d %s %s", |
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1485 ConstantPool::decode_invokedynamic_index(index), |
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1486 method_name->as_C_string(), method_signature->as_C_string()); |
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1487 tty->print(" BSM info: "); bootstrap_specifier->print(); |
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1488 } |
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1489 |
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1490 resolve_dynamic_call(result, bootstrap_specifier, method_name, method_signature, current_klass, CHECK); |
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1491 } |
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1492 |
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1493 void LinkResolver::resolve_dynamic_call(CallInfo& result, |
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1494 Handle bootstrap_specifier, |
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1495 Symbol* method_name, Symbol* method_signature, |
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1496 KlassHandle current_klass, |
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1497 TRAPS) { |
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1498 // JSR 292: this must resolve to an implicitly generated method MH.linkToCallSite(*...) |
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1499 // The appendix argument is likely to be a freshly-created CallSite. |
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1500 Handle resolved_appendix; |
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1501 Handle resolved_method_type; |
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1502 methodHandle resolved_method = |
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1503 SystemDictionary::find_dynamic_call_site_invoker(current_klass, |
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1504 bootstrap_specifier, |
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1505 method_name, method_signature, |
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1506 &resolved_appendix, |
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1507 &resolved_method_type, |
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1508 THREAD); |
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1509 if (HAS_PENDING_EXCEPTION) { |
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1510 if (TraceMethodHandles) { |
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1511 tty->print_cr("invokedynamic throws BSME for "INTPTR_FORMAT, (void *)PENDING_EXCEPTION); |
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1512 PENDING_EXCEPTION->print(); |
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1513 } |
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1514 if (PENDING_EXCEPTION->is_a(SystemDictionary::BootstrapMethodError_klass())) { |
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1515 // throw these guys, since they are already wrapped |
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1516 return; |
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1517 } |
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1518 if (!PENDING_EXCEPTION->is_a(SystemDictionary::LinkageError_klass())) { |
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1519 // intercept only LinkageErrors which might have failed to wrap |
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1520 return; |
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1521 } |
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1522 // See the "Linking Exceptions" section for the invokedynamic instruction in the JVMS. |
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1523 Handle nested_exception(THREAD, PENDING_EXCEPTION); |
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1524 CLEAR_PENDING_EXCEPTION; |
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1525 THROW_CAUSE(vmSymbols::java_lang_BootstrapMethodError(), nested_exception) |
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1526 } |
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1527 result.set_handle(resolved_method, resolved_appendix, resolved_method_type, CHECK); |
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1528 } |
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1529 |
0 | 1530 //------------------------------------------------------------------------------------------------------------------------ |
1531 #ifndef PRODUCT | |
1532 | |
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1533 void CallInfo::print() { |
0 | 1534 ResourceMark rm; |
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1535 const char* kindstr = "unknown"; |
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1536 switch (_call_kind) { |
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1537 case direct_call: kindstr = "direct"; break; |
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1538 case vtable_call: kindstr = "vtable"; break; |
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1539 case itable_call: kindstr = "itable"; break; |
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1540 } |
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1541 tty->print_cr("Call %s@%d %s", kindstr, _call_index, |
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1542 _resolved_method.is_null() ? "(none)" : _resolved_method->name_and_sig_as_C_string()); |
0 | 1543 } |
1544 | |
1545 #endif |