Mercurial > hg > truffle
annotate src/share/vm/interpreter/linkResolver.cpp @ 12883:f50418dfb1b7
Merge
author | iveresov |
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date | Sun, 13 Oct 2013 13:22:24 -0700 |
parents | ac9cb1d5a202 |
children | 2f8728d92483 8df6f123d35e |
rev | line source |
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0 | 1 /* |
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2 * Copyright (c) 1997, 2013, Oracle and/or its affiliates. All rights reserved. |
0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
4 * | |
5 * This code is free software; you can redistribute it and/or modify it | |
6 * under the terms of the GNU General Public License version 2 only, as | |
7 * published by the Free Software Foundation. | |
8 * | |
9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
12 * version 2 for more details (a copy is included in the LICENSE file that | |
13 * accompanied this code). | |
14 * | |
15 * You should have received a copy of the GNU General Public License version | |
16 * 2 along with this work; if not, write to the Free Software Foundation, | |
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
18 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
1972 | 25 #include "precompiled.hpp" |
6934 | 26 #include "classfile/defaultMethods.hpp" |
1972 | 27 #include "classfile/systemDictionary.hpp" |
28 #include "classfile/vmSymbols.hpp" | |
29 #include "compiler/compileBroker.hpp" | |
30 #include "gc_interface/collectedHeap.inline.hpp" | |
31 #include "interpreter/bytecode.hpp" | |
32 #include "interpreter/interpreterRuntime.hpp" | |
33 #include "interpreter/linkResolver.hpp" | |
34 #include "memory/resourceArea.hpp" | |
35 #include "memory/universe.inline.hpp" | |
36 #include "oops/instanceKlass.hpp" | |
37 #include "oops/objArrayOop.hpp" | |
38 #include "prims/methodHandles.hpp" | |
39 #include "prims/nativeLookup.hpp" | |
40 #include "runtime/compilationPolicy.hpp" | |
41 #include "runtime/fieldDescriptor.hpp" | |
42 #include "runtime/frame.inline.hpp" | |
43 #include "runtime/handles.inline.hpp" | |
44 #include "runtime/reflection.hpp" | |
45 #include "runtime/signature.hpp" | |
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46 #include "runtime/thread.inline.hpp" |
1972 | 47 #include "runtime/vmThread.hpp" |
0 | 48 |
49 | |
50 //------------------------------------------------------------------------------------------------------------------------ | |
51 // Implementation of CallInfo | |
52 | |
53 | |
54 void CallInfo::set_static(KlassHandle resolved_klass, methodHandle resolved_method, TRAPS) { | |
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55 int vtable_index = Method::nonvirtual_vtable_index; |
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56 set_common(resolved_klass, resolved_klass, resolved_method, resolved_method, CallInfo::direct_call, vtable_index, CHECK); |
0 | 57 } |
58 | |
59 | |
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60 void CallInfo::set_interface(KlassHandle resolved_klass, KlassHandle selected_klass, methodHandle resolved_method, methodHandle selected_method, int itable_index, TRAPS) { |
0 | 61 // This is only called for interface methods. If the resolved_method |
62 // comes from java/lang/Object, it can be the subject of a virtual call, so | |
63 // we should pick the vtable index from the resolved method. | |
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64 // In that case, the caller must call set_virtual instead of set_interface. |
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65 assert(resolved_method->method_holder()->is_interface(), ""); |
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66 assert(itable_index == resolved_method()->itable_index(), ""); |
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67 set_common(resolved_klass, selected_klass, resolved_method, selected_method, CallInfo::itable_call, itable_index, CHECK); |
0 | 68 } |
69 | |
70 void CallInfo::set_virtual(KlassHandle resolved_klass, KlassHandle selected_klass, methodHandle resolved_method, methodHandle selected_method, int vtable_index, TRAPS) { | |
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71 assert(vtable_index >= 0 || vtable_index == Method::nonvirtual_vtable_index, "valid index"); |
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72 assert(vtable_index < 0 || !resolved_method->has_vtable_index() || vtable_index == resolved_method->vtable_index(), ""); |
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73 CallKind kind = (vtable_index >= 0 && !resolved_method->can_be_statically_bound() ? CallInfo::vtable_call : CallInfo::direct_call); |
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74 set_common(resolved_klass, selected_klass, resolved_method, selected_method, kind, vtable_index, CHECK); |
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75 assert(!resolved_method->is_compiled_lambda_form(), "these must be handled via an invokehandle call"); |
0 | 76 } |
77 | |
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78 void CallInfo::set_handle(methodHandle resolved_method, Handle resolved_appendix, Handle resolved_method_type, TRAPS) { |
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79 if (resolved_method.is_null()) { |
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80 THROW_MSG(vmSymbols::java_lang_InternalError(), "resolved method is null"); |
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81 } |
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82 KlassHandle resolved_klass = SystemDictionary::MethodHandle_klass(); |
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83 assert(resolved_method->intrinsic_id() == vmIntrinsics::_invokeBasic || |
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84 resolved_method->is_compiled_lambda_form(), |
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85 "linkMethod must return one of these"); |
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86 int vtable_index = Method::nonvirtual_vtable_index; |
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87 assert(!resolved_method->has_vtable_index(), ""); |
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88 set_common(resolved_klass, resolved_klass, resolved_method, resolved_method, CallInfo::direct_call, vtable_index, CHECK); |
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89 _resolved_appendix = resolved_appendix; |
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90 _resolved_method_type = resolved_method_type; |
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91 } |
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92 |
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93 void CallInfo::set_common(KlassHandle resolved_klass, |
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94 KlassHandle selected_klass, |
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95 methodHandle resolved_method, |
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96 methodHandle selected_method, |
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97 CallKind kind, |
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98 int index, |
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99 TRAPS) { |
0 | 100 assert(resolved_method->signature() == selected_method->signature(), "signatures must correspond"); |
101 _resolved_klass = resolved_klass; | |
102 _selected_klass = selected_klass; | |
103 _resolved_method = resolved_method; | |
104 _selected_method = selected_method; | |
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105 _call_kind = kind; |
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106 _call_index = index; |
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107 _resolved_appendix = Handle(); |
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108 DEBUG_ONLY(verify()); // verify before making side effects |
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109 |
1783 | 110 if (CompilationPolicy::must_be_compiled(selected_method)) { |
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111 // This path is unusual, mostly used by the '-Xcomp' stress test mode. |
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112 |
1783 | 113 // Note: with several active threads, the must_be_compiled may be true |
114 // while can_be_compiled is false; remove assert | |
115 // assert(CompilationPolicy::can_be_compiled(selected_method), "cannot compile"); | |
0 | 116 if (THREAD->is_Compiler_thread()) { |
117 // don't force compilation, resolve was on behalf of compiler | |
118 return; | |
119 } | |
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120 if (selected_method->method_holder()->is_not_initialized()) { |
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121 // 'is_not_initialized' means not only '!is_initialized', but also that |
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122 // initialization has not been started yet ('!being_initialized') |
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123 // Do not force compilation of methods in uninitialized classes. |
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124 // Note that doing this would throw an assert later, |
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125 // in CompileBroker::compile_method. |
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126 // We sometimes use the link resolver to do reflective lookups |
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127 // even before classes are initialized. |
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128 return; |
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129 } |
0 | 130 CompileBroker::compile_method(selected_method, InvocationEntryBci, |
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131 CompilationPolicy::policy()->initial_compile_level(), |
1783 | 132 methodHandle(), 0, "must_be_compiled", CHECK); |
0 | 133 } |
134 } | |
135 | |
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136 // utility query for unreflecting a method |
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137 CallInfo::CallInfo(Method* resolved_method, Klass* resolved_klass) { |
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138 Klass* resolved_method_holder = resolved_method->method_holder(); |
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139 if (resolved_klass == NULL) { // 2nd argument defaults to holder of 1st |
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140 resolved_klass = resolved_method_holder; |
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141 } |
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142 _resolved_klass = resolved_klass; |
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143 _selected_klass = resolved_klass; |
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144 _resolved_method = resolved_method; |
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145 _selected_method = resolved_method; |
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146 // classify: |
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147 CallKind kind = CallInfo::unknown_kind; |
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148 int index = resolved_method->vtable_index(); |
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149 if (resolved_method->can_be_statically_bound()) { |
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150 kind = CallInfo::direct_call; |
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151 } else if (!resolved_method_holder->is_interface()) { |
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152 // Could be an Object method inherited into an interface, but still a vtable call. |
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153 kind = CallInfo::vtable_call; |
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154 } else if (!resolved_klass->is_interface()) { |
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155 // A miranda method. Compute the vtable index. |
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156 ResourceMark rm; |
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157 klassVtable* vt = InstanceKlass::cast(resolved_klass)->vtable(); |
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158 index = vt->index_of_miranda(resolved_method->name(), |
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159 resolved_method->signature()); |
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160 kind = CallInfo::vtable_call; |
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161 } else { |
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162 // A regular interface call. |
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163 kind = CallInfo::itable_call; |
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164 index = resolved_method->itable_index(); |
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165 } |
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166 assert(index == Method::nonvirtual_vtable_index || index >= 0, err_msg("bad index %d", index)); |
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167 _call_kind = kind; |
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168 _call_index = index; |
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169 _resolved_appendix = Handle(); |
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170 DEBUG_ONLY(verify()); |
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171 } |
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172 |
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173 #ifdef ASSERT |
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174 void CallInfo::verify() { |
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175 switch (call_kind()) { // the meaning and allowed value of index depends on kind |
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176 case CallInfo::direct_call: |
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177 if (_call_index == Method::nonvirtual_vtable_index) break; |
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178 // else fall through to check vtable index: |
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179 case CallInfo::vtable_call: |
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180 assert(resolved_klass()->verify_vtable_index(_call_index), ""); |
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181 break; |
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182 case CallInfo::itable_call: |
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183 assert(resolved_method()->method_holder()->verify_itable_index(_call_index), ""); |
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184 break; |
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185 case CallInfo::unknown_kind: |
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186 assert(call_kind() != CallInfo::unknown_kind, "CallInfo must be set"); |
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187 break; |
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188 default: |
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189 fatal(err_msg_res("Unexpected call kind %d", call_kind())); |
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190 } |
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191 } |
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192 #endif //ASSERT |
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193 |
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194 |
0 | 195 |
196 //------------------------------------------------------------------------------------------------------------------------ | |
197 // Klass resolution | |
198 | |
199 void LinkResolver::check_klass_accessability(KlassHandle ref_klass, KlassHandle sel_klass, TRAPS) { | |
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200 if (!Reflection::verify_class_access(ref_klass(), |
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201 sel_klass(), |
0 | 202 true)) { |
203 ResourceMark rm(THREAD); | |
204 Exceptions::fthrow( | |
205 THREAD_AND_LOCATION, | |
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206 vmSymbols::java_lang_IllegalAccessError(), |
0 | 207 "tried to access class %s from class %s", |
208 sel_klass->external_name(), | |
209 ref_klass->external_name() | |
210 ); | |
211 return; | |
212 } | |
213 } | |
214 | |
215 void LinkResolver::resolve_klass(KlassHandle& result, constantPoolHandle pool, int index, TRAPS) { | |
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216 Klass* result_oop = pool->klass_ref_at(index, CHECK); |
0 | 217 result = KlassHandle(THREAD, result_oop); |
218 } | |
219 | |
220 //------------------------------------------------------------------------------------------------------------------------ | |
221 // Method resolution | |
222 // | |
223 // According to JVM spec. $5.4.3c & $5.4.3d | |
224 | |
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225 // Look up method in klasses, including static methods |
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226 // Then look up local default methods |
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227 void LinkResolver::lookup_method_in_klasses(methodHandle& result, KlassHandle klass, Symbol* name, Symbol* signature, TRAPS) { |
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228 Method* result_oop = klass->uncached_lookup_method(name, signature); |
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229 if (result_oop == NULL) { |
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230 Array<Method*>* default_methods = InstanceKlass::cast(klass())->default_methods(); |
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231 if (default_methods != NULL) { |
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232 result_oop = InstanceKlass::find_method(default_methods, name, signature); |
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233 } |
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234 } |
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235 |
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236 if (EnableInvokeDynamic && result_oop != NULL) { |
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237 vmIntrinsics::ID iid = result_oop->intrinsic_id(); |
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238 if (MethodHandles::is_signature_polymorphic(iid)) { |
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239 // Do not link directly to these. The VM must produce a synthetic one using lookup_polymorphic_method. |
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240 return; |
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241 } |
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242 } |
0 | 243 result = methodHandle(THREAD, result_oop); |
244 } | |
245 | |
246 // returns first instance method | |
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247 // Looks up method in classes, then looks up local default methods |
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248 void LinkResolver::lookup_instance_method_in_klasses(methodHandle& result, KlassHandle klass, Symbol* name, Symbol* signature, TRAPS) { |
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249 Method* result_oop = klass->uncached_lookup_method(name, signature); |
0 | 250 result = methodHandle(THREAD, result_oop); |
251 while (!result.is_null() && result->is_static()) { | |
6983 | 252 klass = KlassHandle(THREAD, result->method_holder()->super()); |
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253 result = methodHandle(THREAD, klass->uncached_lookup_method(name, signature)); |
0 | 254 } |
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255 |
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256 if (result.is_null()) { |
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257 Array<Method*>* default_methods = InstanceKlass::cast(klass())->default_methods(); |
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258 if (default_methods != NULL) { |
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259 result = methodHandle(InstanceKlass::find_method(default_methods, name, signature)); |
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260 assert(result.is_null() || !result->is_static(), "static defaults not allowed"); |
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261 } |
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262 } |
0 | 263 } |
264 | |
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265 int LinkResolver::vtable_index_of_interface_method(KlassHandle klass, |
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266 methodHandle resolved_method, TRAPS) { |
0 | 267 |
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268 int vtable_index = Method::invalid_vtable_index; |
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269 Symbol* name = resolved_method->name(); |
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270 Symbol* signature = resolved_method->signature(); |
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271 |
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272 // First check in default method array |
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273 if (!resolved_method->is_abstract() && |
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274 (InstanceKlass::cast(klass())->default_methods() != NULL)) { |
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275 int index = InstanceKlass::find_method_index(InstanceKlass::cast(klass())->default_methods(), name, signature); |
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276 if (index >= 0 ) { |
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277 vtable_index = InstanceKlass::cast(klass())->default_vtable_indices()->at(index); |
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278 } |
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279 } |
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280 if (vtable_index == Method::invalid_vtable_index) { |
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281 // get vtable_index for miranda methods |
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282 ResourceMark rm(THREAD); |
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283 klassVtable *vt = InstanceKlass::cast(klass())->vtable(); |
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284 vtable_index = vt->index_of_miranda(name, signature); |
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285 } |
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286 return vtable_index; |
0 | 287 } |
288 | |
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289 void LinkResolver::lookup_method_in_interfaces(methodHandle& result, KlassHandle klass, Symbol* name, Symbol* signature, TRAPS) { |
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290 InstanceKlass *ik = InstanceKlass::cast(klass()); |
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291 result = methodHandle(THREAD, ik->lookup_method_in_all_interfaces(name, signature)); |
0 | 292 } |
293 | |
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294 void LinkResolver::lookup_polymorphic_method(methodHandle& result, |
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295 KlassHandle klass, Symbol* name, Symbol* full_signature, |
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296 KlassHandle current_klass, |
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297 Handle *appendix_result_or_null, |
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298 Handle *method_type_result, |
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299 TRAPS) { |
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300 vmIntrinsics::ID iid = MethodHandles::signature_polymorphic_name_id(name); |
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301 if (TraceMethodHandles) { |
9082 | 302 ResourceMark rm(THREAD); |
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303 tty->print_cr("lookup_polymorphic_method iid=%s %s.%s%s", |
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304 vmIntrinsics::name_at(iid), klass->external_name(), |
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305 name->as_C_string(), full_signature->as_C_string()); |
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306 } |
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307 if (EnableInvokeDynamic && |
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308 klass() == SystemDictionary::MethodHandle_klass() && |
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309 iid != vmIntrinsics::_none) { |
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310 if (MethodHandles::is_signature_polymorphic_intrinsic(iid)) { |
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311 // Most of these do not need an up-call to Java to resolve, so can be done anywhere. |
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312 // Do not erase last argument type (MemberName) if it is a static linkTo method. |
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313 bool keep_last_arg = MethodHandles::is_signature_polymorphic_static(iid); |
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314 TempNewSymbol basic_signature = |
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315 MethodHandles::lookup_basic_type_signature(full_signature, keep_last_arg, CHECK); |
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316 if (TraceMethodHandles) { |
9082 | 317 ResourceMark rm(THREAD); |
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318 tty->print_cr("lookup_polymorphic_method %s %s => basic %s", |
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319 name->as_C_string(), |
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320 full_signature->as_C_string(), |
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321 basic_signature->as_C_string()); |
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322 } |
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323 result = SystemDictionary::find_method_handle_intrinsic(iid, |
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324 basic_signature, |
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325 CHECK); |
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326 if (result.not_null()) { |
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327 assert(result->is_method_handle_intrinsic(), "MH.invokeBasic or MH.linkTo* intrinsic"); |
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328 assert(result->intrinsic_id() != vmIntrinsics::_invokeGeneric, "wrong place to find this"); |
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329 assert(basic_signature == result->signature(), "predict the result signature"); |
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330 if (TraceMethodHandles) { |
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331 tty->print("lookup_polymorphic_method => intrinsic "); |
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332 result->print_on(tty); |
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333 } |
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334 return; |
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335 } |
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336 } else if (iid == vmIntrinsics::_invokeGeneric |
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337 && !THREAD->is_Compiler_thread() |
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338 && appendix_result_or_null != NULL) { |
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339 // This is a method with type-checking semantics. |
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340 // We will ask Java code to spin an adapter method for it. |
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341 if (!MethodHandles::enabled()) { |
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342 // Make sure the Java part of the runtime has been booted up. |
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343 Klass* natives = SystemDictionary::MethodHandleNatives_klass(); |
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344 if (natives == NULL || InstanceKlass::cast(natives)->is_not_initialized()) { |
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345 SystemDictionary::resolve_or_fail(vmSymbols::java_lang_invoke_MethodHandleNatives(), |
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346 Handle(), |
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347 Handle(), |
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348 true, |
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349 CHECK); |
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350 } |
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351 } |
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352 |
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353 Handle appendix; |
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354 Handle method_type; |
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355 result = SystemDictionary::find_method_handle_invoker(name, |
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356 full_signature, |
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357 current_klass, |
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358 &appendix, |
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359 &method_type, |
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360 CHECK); |
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361 if (TraceMethodHandles) { |
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362 tty->print("lookup_polymorphic_method => (via Java) "); |
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363 result->print_on(tty); |
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364 tty->print(" lookup_polymorphic_method => appendix = "); |
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365 if (appendix.is_null()) tty->print_cr("(none)"); |
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366 else appendix->print_on(tty); |
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367 } |
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368 if (result.not_null()) { |
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369 #ifdef ASSERT |
9082 | 370 ResourceMark rm(THREAD); |
371 | |
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372 TempNewSymbol basic_signature = |
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373 MethodHandles::lookup_basic_type_signature(full_signature, CHECK); |
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374 int actual_size_of_params = result->size_of_parameters(); |
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375 int expected_size_of_params = ArgumentSizeComputer(basic_signature).size(); |
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376 // +1 for MethodHandle.this, +1 for trailing MethodType |
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377 if (!MethodHandles::is_signature_polymorphic_static(iid)) expected_size_of_params += 1; |
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378 if (appendix.not_null()) expected_size_of_params += 1; |
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379 if (actual_size_of_params != expected_size_of_params) { |
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380 tty->print_cr("*** basic_signature=%s", basic_signature->as_C_string()); |
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381 tty->print_cr("*** result for %s: ", vmIntrinsics::name_at(iid)); |
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382 result->print(); |
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383 } |
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384 assert(actual_size_of_params == expected_size_of_params, |
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385 err_msg("%d != %d", actual_size_of_params, expected_size_of_params)); |
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386 #endif //ASSERT |
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387 |
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388 assert(appendix_result_or_null != NULL, ""); |
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389 (*appendix_result_or_null) = appendix; |
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390 (*method_type_result) = method_type; |
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391 return; |
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392 } |
710 | 393 } |
394 } | |
395 } | |
396 | |
0 | 397 void LinkResolver::check_method_accessability(KlassHandle ref_klass, |
398 KlassHandle resolved_klass, | |
399 KlassHandle sel_klass, | |
400 methodHandle sel_method, | |
401 TRAPS) { | |
402 | |
403 AccessFlags flags = sel_method->access_flags(); | |
404 | |
405 // Special case: arrays always override "clone". JVMS 2.15. | |
406 // If the resolved klass is an array class, and the declaring class | |
407 // is java.lang.Object and the method is "clone", set the flags | |
408 // to public. | |
409 // | |
410 // We'll check for the method name first, as that's most likely | |
411 // to be false (so we'll short-circuit out of these tests). | |
412 if (sel_method->name() == vmSymbols::clone_name() && | |
1142 | 413 sel_klass() == SystemDictionary::Object_klass() && |
0 | 414 resolved_klass->oop_is_array()) { |
415 // We need to change "protected" to "public". | |
416 assert(flags.is_protected(), "clone not protected?"); | |
417 jint new_flags = flags.as_int(); | |
418 new_flags = new_flags & (~JVM_ACC_PROTECTED); | |
419 new_flags = new_flags | JVM_ACC_PUBLIC; | |
420 flags.set_flags(new_flags); | |
421 } | |
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422 // assert(extra_arg_result_or_null != NULL, "must be able to return extra argument"); |
0 | 423 |
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424 if (!Reflection::verify_field_access(ref_klass(), |
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425 resolved_klass(), |
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426 sel_klass(), |
0 | 427 flags, |
428 true)) { | |
429 ResourceMark rm(THREAD); | |
430 Exceptions::fthrow( | |
431 THREAD_AND_LOCATION, | |
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432 vmSymbols::java_lang_IllegalAccessError(), |
0 | 433 "tried to access method %s.%s%s from class %s", |
434 sel_klass->external_name(), | |
435 sel_method->name()->as_C_string(), | |
436 sel_method->signature()->as_C_string(), | |
437 ref_klass->external_name() | |
438 ); | |
439 return; | |
440 } | |
441 } | |
442 | |
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443 void LinkResolver::resolve_method_statically(methodHandle& resolved_method, KlassHandle& resolved_klass, |
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444 Bytecodes::Code code, constantPoolHandle pool, int index, TRAPS) { |
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445 // This method is used only |
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446 // (1) in C2 from InlineTree::ok_to_inline (via ciMethod::check_call), |
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447 // and |
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448 // (2) in Bytecode_invoke::static_target |
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449 // It appears to fail when applied to an invokeinterface call site. |
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450 // FIXME: Remove this method and ciMethod::check_call; refactor to use the other LinkResolver entry points. |
0 | 451 // resolve klass |
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452 if (code == Bytecodes::_invokedynamic) { |
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453 resolved_klass = SystemDictionary::MethodHandle_klass(); |
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454 Symbol* method_name = vmSymbols::invoke_name(); |
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455 Symbol* method_signature = pool->signature_ref_at(index); |
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456 KlassHandle current_klass(THREAD, pool->pool_holder()); |
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457 resolve_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, true, CHECK); |
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458 return; |
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459 } |
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460 |
0 | 461 resolve_klass(resolved_klass, pool, index, CHECK); |
462 | |
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463 Symbol* method_name = pool->name_ref_at(index); |
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464 Symbol* method_signature = pool->signature_ref_at(index); |
0 | 465 KlassHandle current_klass(THREAD, pool->pool_holder()); |
466 | |
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467 if (pool->has_preresolution() |
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468 || (resolved_klass() == SystemDictionary::MethodHandle_klass() && |
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469 MethodHandles::is_signature_polymorphic_name(resolved_klass(), method_name))) { |
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470 Method* result_oop = ConstantPool::method_at_if_loaded(pool, index); |
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471 if (result_oop != NULL) { |
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472 resolved_method = methodHandle(THREAD, result_oop); |
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473 return; |
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474 } |
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475 } |
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476 |
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477 if (code == Bytecodes::_invokeinterface) { |
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478 resolve_interface_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, true, CHECK); |
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479 } else { |
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480 resolve_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, true, CHECK); |
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481 } |
0 | 482 } |
483 | |
484 void LinkResolver::resolve_method(methodHandle& resolved_method, KlassHandle resolved_klass, | |
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485 Symbol* method_name, Symbol* method_signature, |
0 | 486 KlassHandle current_klass, bool check_access, TRAPS) { |
487 | |
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488 Handle nested_exception; |
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489 |
6934 | 490 // 1. lookup method in resolved klass and its super klasses |
0 | 491 lookup_method_in_klasses(resolved_method, resolved_klass, method_name, method_signature, CHECK); |
492 | |
493 if (resolved_method.is_null()) { // not found in the class hierarchy | |
6934 | 494 // 2. lookup method in all the interfaces implemented by the resolved klass |
0 | 495 lookup_method_in_interfaces(resolved_method, resolved_klass, method_name, method_signature, CHECK); |
496 | |
497 if (resolved_method.is_null()) { | |
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498 // JSR 292: see if this is an implicitly generated method MethodHandle.linkToVirtual(*...), etc |
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499 lookup_polymorphic_method(resolved_method, resolved_klass, method_name, method_signature, |
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500 current_klass, (Handle*)NULL, (Handle*)NULL, THREAD); |
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501 if (HAS_PENDING_EXCEPTION) { |
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502 nested_exception = Handle(THREAD, PENDING_EXCEPTION); |
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503 CLEAR_PENDING_EXCEPTION; |
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504 } |
710 | 505 } |
506 | |
507 if (resolved_method.is_null()) { | |
6934 | 508 // 3. method lookup failed |
0 | 509 ResourceMark rm(THREAD); |
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510 THROW_MSG_CAUSE(vmSymbols::java_lang_NoSuchMethodError(), |
6983 | 511 Method::name_and_sig_as_C_string(resolved_klass(), |
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512 method_name, |
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513 method_signature), |
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514 nested_exception); |
0 | 515 } |
516 } | |
517 | |
6934 | 518 // 4. check if klass is not interface |
519 if (resolved_klass->is_interface() && resolved_method->is_abstract()) { | |
520 ResourceMark rm(THREAD); | |
521 char buf[200]; | |
522 jio_snprintf(buf, sizeof(buf), "Found interface %s, but class was expected", | |
523 resolved_klass()->external_name()); | |
524 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); | |
525 } | |
526 | |
0 | 527 // 5. check if method is concrete |
528 if (resolved_method->is_abstract() && !resolved_klass->is_abstract()) { | |
529 ResourceMark rm(THREAD); | |
530 THROW_MSG(vmSymbols::java_lang_AbstractMethodError(), | |
6983 | 531 Method::name_and_sig_as_C_string(resolved_klass(), |
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532 method_name, |
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533 method_signature)); |
0 | 534 } |
535 | |
536 // 6. access checks, access checking may be turned off when calling from within the VM. | |
537 if (check_access) { | |
538 assert(current_klass.not_null() , "current_klass should not be null"); | |
539 | |
540 // check if method can be accessed by the referring class | |
541 check_method_accessability(current_klass, | |
542 resolved_klass, | |
543 KlassHandle(THREAD, resolved_method->method_holder()), | |
544 resolved_method, | |
545 CHECK); | |
546 | |
547 // check loader constraints | |
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548 Handle loader (THREAD, InstanceKlass::cast(current_klass())->class_loader()); |
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549 Handle class_loader (THREAD, resolved_method->method_holder()->class_loader()); |
0 | 550 { |
551 ResourceMark rm(THREAD); | |
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552 Symbol* failed_type_symbol = |
0 | 553 SystemDictionary::check_signature_loaders(method_signature, loader, |
554 class_loader, true, CHECK); | |
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555 if (failed_type_symbol != NULL) { |
0 | 556 const char* msg = "loader constraint violation: when resolving method" |
557 " \"%s\" the class loader (instance of %s) of the current class, %s," | |
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558 " and the class loader (instance of %s) for the method's defining class, %s, have" |
0 | 559 " different Class objects for the type %s used in the signature"; |
6983 | 560 char* sig = Method::name_and_sig_as_C_string(resolved_klass(),method_name,method_signature); |
0 | 561 const char* loader1 = SystemDictionary::loader_name(loader()); |
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562 char* current = InstanceKlass::cast(current_klass())->name()->as_C_string(); |
0 | 563 const char* loader2 = SystemDictionary::loader_name(class_loader()); |
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564 char* target = InstanceKlass::cast(resolved_method->method_holder()) |
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565 ->name()->as_C_string(); |
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566 char* failed_type_name = failed_type_symbol->as_C_string(); |
0 | 567 size_t buflen = strlen(msg) + strlen(sig) + strlen(loader1) + |
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568 strlen(current) + strlen(loader2) + strlen(target) + |
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569 strlen(failed_type_name) + 1; |
0 | 570 char* buf = NEW_RESOURCE_ARRAY_IN_THREAD(THREAD, char, buflen); |
571 jio_snprintf(buf, buflen, msg, sig, loader1, current, loader2, | |
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572 target, failed_type_name); |
0 | 573 THROW_MSG(vmSymbols::java_lang_LinkageError(), buf); |
574 } | |
575 } | |
576 } | |
577 } | |
578 | |
579 void LinkResolver::resolve_interface_method(methodHandle& resolved_method, | |
580 KlassHandle resolved_klass, | |
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581 Symbol* method_name, |
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582 Symbol* method_signature, |
0 | 583 KlassHandle current_klass, |
584 bool check_access, TRAPS) { | |
585 | |
586 // check if klass is interface | |
587 if (!resolved_klass->is_interface()) { | |
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588 ResourceMark rm(THREAD); |
0 | 589 char buf[200]; |
6983 | 590 jio_snprintf(buf, sizeof(buf), "Found class %s, but interface was expected", resolved_klass()->external_name()); |
0 | 591 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); |
592 } | |
593 | |
594 // lookup method in this interface or its super, java.lang.Object | |
595 lookup_instance_method_in_klasses(resolved_method, resolved_klass, method_name, method_signature, CHECK); | |
596 | |
597 if (resolved_method.is_null()) { | |
598 // lookup method in all the super-interfaces | |
599 lookup_method_in_interfaces(resolved_method, resolved_klass, method_name, method_signature, CHECK); | |
600 if (resolved_method.is_null()) { | |
601 // no method found | |
602 ResourceMark rm(THREAD); | |
603 THROW_MSG(vmSymbols::java_lang_NoSuchMethodError(), | |
6983 | 604 Method::name_and_sig_as_C_string(resolved_klass(), |
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605 method_name, |
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606 method_signature)); |
0 | 607 } |
608 } | |
609 | |
610 if (check_access) { | |
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611 // JDK8 adds non-public interface methods, and accessability check requirement |
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612 assert(current_klass.not_null() , "current_klass should not be null"); |
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613 |
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614 // check if method can be accessed by the referring class |
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615 check_method_accessability(current_klass, |
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616 resolved_klass, |
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617 KlassHandle(THREAD, resolved_method->method_holder()), |
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618 resolved_method, |
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619 CHECK); |
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620 |
0 | 621 HandleMark hm(THREAD); |
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622 Handle loader (THREAD, InstanceKlass::cast(current_klass())->class_loader()); |
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623 Handle class_loader (THREAD, resolved_method->method_holder()->class_loader()); |
0 | 624 { |
625 ResourceMark rm(THREAD); | |
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626 Symbol* failed_type_symbol = |
0 | 627 SystemDictionary::check_signature_loaders(method_signature, loader, |
628 class_loader, true, CHECK); | |
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629 if (failed_type_symbol != NULL) { |
0 | 630 const char* msg = "loader constraint violation: when resolving " |
631 "interface method \"%s\" the class loader (instance of %s) of the " | |
632 "current class, %s, and the class loader (instance of %s) for " | |
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633 "the method's defining class, %s, have different Class objects for the type %s " |
0 | 634 "used in the signature"; |
6983 | 635 char* sig = Method::name_and_sig_as_C_string(resolved_klass(),method_name,method_signature); |
0 | 636 const char* loader1 = SystemDictionary::loader_name(loader()); |
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637 char* current = InstanceKlass::cast(current_klass())->name()->as_C_string(); |
0 | 638 const char* loader2 = SystemDictionary::loader_name(class_loader()); |
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639 char* target = InstanceKlass::cast(resolved_method->method_holder()) |
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640 ->name()->as_C_string(); |
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641 char* failed_type_name = failed_type_symbol->as_C_string(); |
0 | 642 size_t buflen = strlen(msg) + strlen(sig) + strlen(loader1) + |
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643 strlen(current) + strlen(loader2) + strlen(target) + |
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644 strlen(failed_type_name) + 1; |
0 | 645 char* buf = NEW_RESOURCE_ARRAY_IN_THREAD(THREAD, char, buflen); |
646 jio_snprintf(buf, buflen, msg, sig, loader1, current, loader2, | |
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647 target, failed_type_name); |
0 | 648 THROW_MSG(vmSymbols::java_lang_LinkageError(), buf); |
649 } | |
650 } | |
651 } | |
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652 |
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653 if (TraceItables && Verbose) { |
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654 ResourceMark rm(THREAD); |
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655 tty->print("invokeinterface resolved method: caller-class:%s, compile-time-class:%s, method:%s, method_holder:%s, access_flags: ", |
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656 (current_klass.is_null() ? "<NULL>" : current_klass->internal_name()), |
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657 (resolved_klass.is_null() ? "<NULL>" : resolved_klass->internal_name()), |
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658 Method::name_and_sig_as_C_string(resolved_klass(), |
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659 resolved_method->name(), |
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660 resolved_method->signature()), |
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661 resolved_method->method_holder()->internal_name() |
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662 ); |
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663 resolved_method->access_flags().print_on(tty); |
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664 if (resolved_method->is_default_method()) { |
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665 tty->print("default"); |
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666 } |
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667 if (resolved_method->is_overpass()) { |
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668 tty->print("overpass"); |
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669 } |
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670 tty->cr(); |
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671 } |
0 | 672 } |
673 | |
674 //------------------------------------------------------------------------------------------------------------------------ | |
675 // Field resolution | |
676 | |
677 void LinkResolver::check_field_accessability(KlassHandle ref_klass, | |
678 KlassHandle resolved_klass, | |
679 KlassHandle sel_klass, | |
680 fieldDescriptor& fd, | |
681 TRAPS) { | |
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682 if (!Reflection::verify_field_access(ref_klass(), |
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683 resolved_klass(), |
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684 sel_klass(), |
0 | 685 fd.access_flags(), |
686 true)) { | |
687 ResourceMark rm(THREAD); | |
688 Exceptions::fthrow( | |
689 THREAD_AND_LOCATION, | |
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690 vmSymbols::java_lang_IllegalAccessError(), |
0 | 691 "tried to access field %s.%s from class %s", |
692 sel_klass->external_name(), | |
693 fd.name()->as_C_string(), | |
694 ref_klass->external_name() | |
695 ); | |
696 return; | |
697 } | |
698 } | |
699 | |
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700 void LinkResolver::resolve_field_access(fieldDescriptor& result, constantPoolHandle pool, int index, Bytecodes::Code byte, TRAPS) { |
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701 // Load these early in case the resolve of the containing klass fails |
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702 Symbol* field = pool->name_ref_at(index); |
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703 Symbol* sig = pool->signature_ref_at(index); |
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704 |
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705 // resolve specified klass |
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706 KlassHandle resolved_klass; |
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707 resolve_klass(resolved_klass, pool, index, CHECK); |
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708 |
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709 KlassHandle current_klass(THREAD, pool->pool_holder()); |
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710 resolve_field(result, resolved_klass, field, sig, current_klass, byte, true, true, CHECK); |
0 | 711 } |
712 | |
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713 void LinkResolver::resolve_field(fieldDescriptor& fd, KlassHandle resolved_klass, Symbol* field, Symbol* sig, |
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714 KlassHandle current_klass, Bytecodes::Code byte, bool check_access, bool initialize_class, |
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715 TRAPS) { |
0 | 716 assert(byte == Bytecodes::_getstatic || byte == Bytecodes::_putstatic || |
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717 byte == Bytecodes::_getfield || byte == Bytecodes::_putfield || |
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718 (byte == Bytecodes::_nop && !check_access), "bad field access bytecode"); |
0 | 719 |
720 bool is_static = (byte == Bytecodes::_getstatic || byte == Bytecodes::_putstatic); | |
721 bool is_put = (byte == Bytecodes::_putfield || byte == Bytecodes::_putstatic); | |
722 | |
723 // Check if there's a resolved klass containing the field | |
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724 if (resolved_klass.is_null()) { |
0 | 725 ResourceMark rm(THREAD); |
726 THROW_MSG(vmSymbols::java_lang_NoSuchFieldError(), field->as_C_string()); | |
727 } | |
728 | |
729 // Resolve instance field | |
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730 KlassHandle sel_klass(THREAD, InstanceKlass::cast(resolved_klass())->find_field(field, sig, &fd)); |
0 | 731 // check if field exists; i.e., if a klass containing the field def has been selected |
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732 if (sel_klass.is_null()) { |
0 | 733 ResourceMark rm(THREAD); |
734 THROW_MSG(vmSymbols::java_lang_NoSuchFieldError(), field->as_C_string()); | |
735 } | |
736 | |
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737 if (!check_access) |
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738 // Access checking may be turned off when calling from within the VM. |
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739 return; |
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740 |
0 | 741 // check access |
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742 check_field_accessability(current_klass, resolved_klass, sel_klass, fd, CHECK); |
0 | 743 |
744 // check for errors | |
745 if (is_static != fd.is_static()) { | |
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746 ResourceMark rm(THREAD); |
0 | 747 char msg[200]; |
6983 | 748 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 | 749 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), msg); |
750 } | |
751 | |
752 // Final fields can only be accessed from its own class. | |
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753 if (is_put && fd.access_flags().is_final() && sel_klass() != current_klass()) { |
0 | 754 THROW(vmSymbols::java_lang_IllegalAccessError()); |
755 } | |
756 | |
757 // initialize resolved_klass if necessary | |
758 // note 1: the klass which declared the field must be initialized (i.e, sel_klass) | |
759 // according to the newest JVM spec (5.5, p.170) - was bug (gri 7/28/99) | |
760 // | |
761 // note 2: we don't want to force initialization if we are just checking | |
762 // if the field access is legal; e.g., during compilation | |
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763 if (is_static && initialize_class) { |
0 | 764 sel_klass->initialize(CHECK); |
765 } | |
766 | |
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767 if (sel_klass() != current_klass()) { |
0 | 768 HandleMark hm(THREAD); |
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769 Handle ref_loader (THREAD, InstanceKlass::cast(current_klass())->class_loader()); |
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770 Handle sel_loader (THREAD, InstanceKlass::cast(sel_klass())->class_loader()); |
0 | 771 { |
772 ResourceMark rm(THREAD); | |
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773 Symbol* failed_type_symbol = |
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774 SystemDictionary::check_signature_loaders(sig, |
0 | 775 ref_loader, sel_loader, |
776 false, | |
777 CHECK); | |
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778 if (failed_type_symbol != NULL) { |
0 | 779 const char* msg = "loader constraint violation: when resolving field" |
780 " \"%s\" the class loader (instance of %s) of the referring class, " | |
781 "%s, and the class loader (instance of %s) for the field's resolved " | |
782 "type, %s, have different Class objects for that type"; | |
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783 char* field_name = field->as_C_string(); |
0 | 784 const char* loader1 = SystemDictionary::loader_name(ref_loader()); |
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785 char* sel = InstanceKlass::cast(sel_klass())->name()->as_C_string(); |
0 | 786 const char* loader2 = SystemDictionary::loader_name(sel_loader()); |
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787 char* failed_type_name = failed_type_symbol->as_C_string(); |
0 | 788 size_t buflen = strlen(msg) + strlen(field_name) + strlen(loader1) + |
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789 strlen(sel) + strlen(loader2) + strlen(failed_type_name) + 1; |
0 | 790 char* buf = NEW_RESOURCE_ARRAY_IN_THREAD(THREAD, char, buflen); |
791 jio_snprintf(buf, buflen, msg, field_name, loader1, sel, loader2, | |
792 failed_type_name); | |
793 THROW_MSG(vmSymbols::java_lang_LinkageError(), buf); | |
794 } | |
795 } | |
796 } | |
797 | |
798 // return information. note that the klass is set to the actual klass containing the | |
799 // field, otherwise access of static fields in superclasses will not work. | |
800 } | |
801 | |
802 | |
803 //------------------------------------------------------------------------------------------------------------------------ | |
804 // Invoke resolution | |
805 // | |
806 // Naming conventions: | |
807 // | |
808 // resolved_method the specified method (i.e., static receiver specified via constant pool index) | |
809 // sel_method the selected method (selected via run-time lookup; e.g., based on dynamic receiver class) | |
810 // resolved_klass the specified klass (i.e., specified via constant pool index) | |
811 // recv_klass the receiver klass | |
812 | |
813 | |
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814 void LinkResolver::resolve_static_call(CallInfo& result, KlassHandle& resolved_klass, Symbol* method_name, |
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815 Symbol* method_signature, KlassHandle current_klass, |
0 | 816 bool check_access, bool initialize_class, TRAPS) { |
817 methodHandle resolved_method; | |
818 linktime_resolve_static_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK); | |
6983 | 819 resolved_klass = KlassHandle(THREAD, resolved_method->method_holder()); |
0 | 820 |
821 // Initialize klass (this should only happen if everything is ok) | |
822 if (initialize_class && resolved_klass->should_be_initialized()) { | |
823 resolved_klass->initialize(CHECK); | |
824 linktime_resolve_static_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK); | |
825 } | |
826 | |
827 // setup result | |
828 result.set_static(resolved_klass, resolved_method, CHECK); | |
829 } | |
830 | |
831 // throws linktime exceptions | |
832 void LinkResolver::linktime_resolve_static_method(methodHandle& resolved_method, KlassHandle resolved_klass, | |
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833 Symbol* method_name, Symbol* method_signature, |
0 | 834 KlassHandle current_klass, bool check_access, TRAPS) { |
835 | |
836 resolve_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK); | |
837 assert(resolved_method->name() != vmSymbols::class_initializer_name(), "should have been checked in verifier"); | |
838 | |
839 // check if static | |
840 if (!resolved_method->is_static()) { | |
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841 ResourceMark rm(THREAD); |
0 | 842 char buf[200]; |
6983 | 843 jio_snprintf(buf, sizeof(buf), "Expected static method %s", Method::name_and_sig_as_C_string(resolved_klass(), |
0 | 844 resolved_method->name(), |
845 resolved_method->signature())); | |
846 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); | |
847 } | |
848 } | |
849 | |
850 | |
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851 void LinkResolver::resolve_special_call(CallInfo& result, KlassHandle resolved_klass, Symbol* method_name, |
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852 Symbol* method_signature, KlassHandle current_klass, bool check_access, TRAPS) { |
0 | 853 methodHandle resolved_method; |
854 linktime_resolve_special_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK); | |
855 runtime_resolve_special_method(result, resolved_method, resolved_klass, current_klass, check_access, CHECK); | |
856 } | |
857 | |
858 // throws linktime exceptions | |
859 void LinkResolver::linktime_resolve_special_method(methodHandle& resolved_method, KlassHandle resolved_klass, | |
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860 Symbol* method_name, Symbol* method_signature, |
0 | 861 KlassHandle current_klass, bool check_access, TRAPS) { |
862 | |
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863 // Invokespecial is called for multiple special reasons: |
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864 // <init> |
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865 // local private method invocation, for classes and interfaces |
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866 // superclass.method, which can also resolve to a default method |
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867 // and the selected method is recalculated relative to the direct superclass |
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868 // superinterface.method, which explicitly does not check shadowing |
6934 | 869 |
0 | 870 resolve_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK); |
871 | |
872 // check if method name is <init>, that it is found in same klass as static type | |
873 if (resolved_method->name() == vmSymbols::object_initializer_name() && | |
874 resolved_method->method_holder() != resolved_klass()) { | |
875 ResourceMark rm(THREAD); | |
876 Exceptions::fthrow( | |
877 THREAD_AND_LOCATION, | |
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878 vmSymbols::java_lang_NoSuchMethodError(), |
0 | 879 "%s: method %s%s not found", |
880 resolved_klass->external_name(), | |
881 resolved_method->name()->as_C_string(), | |
882 resolved_method->signature()->as_C_string() | |
883 ); | |
884 return; | |
885 } | |
886 | |
887 // check if not static | |
888 if (resolved_method->is_static()) { | |
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889 ResourceMark rm(THREAD); |
0 | 890 char buf[200]; |
891 jio_snprintf(buf, sizeof(buf), | |
892 "Expecting non-static method %s", | |
6983 | 893 Method::name_and_sig_as_C_string(resolved_klass(), |
0 | 894 resolved_method->name(), |
895 resolved_method->signature())); | |
896 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); | |
897 } | |
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898 |
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899 if (TraceItables && Verbose) { |
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900 ResourceMark rm(THREAD); |
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901 tty->print("invokespecial resolved method: caller-class:%s, compile-time-class:%s, method:%s, method_holder:%s, access_flags: ", |
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902 (current_klass.is_null() ? "<NULL>" : current_klass->internal_name()), |
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903 (resolved_klass.is_null() ? "<NULL>" : resolved_klass->internal_name()), |
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904 Method::name_and_sig_as_C_string(resolved_klass(), |
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905 resolved_method->name(), |
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906 resolved_method->signature()), |
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907 resolved_method->method_holder()->internal_name() |
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908 ); |
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909 resolved_method->access_flags().print_on(tty); |
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910 if (resolved_method->is_default_method()) { |
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911 tty->print("default"); |
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912 } |
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913 if (resolved_method->is_overpass()) { |
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914 tty->print("overpass"); |
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915 } |
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916 tty->cr(); |
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917 } |
0 | 918 } |
919 | |
920 // throws runtime exceptions | |
921 void LinkResolver::runtime_resolve_special_method(CallInfo& result, methodHandle resolved_method, KlassHandle resolved_klass, | |
922 KlassHandle current_klass, bool check_access, TRAPS) { | |
923 | |
924 // resolved method is selected method unless we have an old-style lookup | |
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925 // for a superclass method |
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926 // Invokespecial for a superinterface, resolved method is selected method, |
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927 // no checks for shadowing |
0 | 928 methodHandle sel_method(THREAD, resolved_method()); |
929 | |
930 // check if this is an old-style super call and do a new lookup if so | |
931 { KlassHandle method_klass = KlassHandle(THREAD, | |
932 resolved_method->method_holder()); | |
933 | |
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934 if (check_access && |
0 | 935 // a) check if ACC_SUPER flag is set for the current class |
8702 | 936 (current_klass->is_super() || !AllowNonVirtualCalls) && |
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937 // b) check if the class of the resolved_klass is a superclass |
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938 // (not supertype in order to exclude interface classes) of the current class. |
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939 // This check is not performed for super.invoke for interface methods |
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940 // in super interfaces. |
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941 current_klass->is_subclass_of(resolved_klass()) && |
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942 current_klass() != resolved_klass() && |
0 | 943 // c) check if the method is not <init> |
944 resolved_method->name() != vmSymbols::object_initializer_name()) { | |
945 // Lookup super method | |
946 KlassHandle super_klass(THREAD, current_klass->super()); | |
947 lookup_instance_method_in_klasses(sel_method, super_klass, | |
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948 resolved_method->name(), |
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949 resolved_method->signature(), CHECK); |
0 | 950 // check if found |
951 if (sel_method.is_null()) { | |
952 ResourceMark rm(THREAD); | |
953 THROW_MSG(vmSymbols::java_lang_AbstractMethodError(), | |
6983 | 954 Method::name_and_sig_as_C_string(resolved_klass(), |
0 | 955 resolved_method->name(), |
956 resolved_method->signature())); | |
957 } | |
958 } | |
959 } | |
960 | |
961 // check if not static | |
962 if (sel_method->is_static()) { | |
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963 ResourceMark rm(THREAD); |
0 | 964 char buf[200]; |
6983 | 965 jio_snprintf(buf, sizeof(buf), "Expecting non-static method %s", Method::name_and_sig_as_C_string(resolved_klass(), |
0 | 966 resolved_method->name(), |
967 resolved_method->signature())); | |
968 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); | |
969 } | |
970 | |
971 // check if abstract | |
972 if (sel_method->is_abstract()) { | |
973 ResourceMark rm(THREAD); | |
974 THROW_MSG(vmSymbols::java_lang_AbstractMethodError(), | |
6983 | 975 Method::name_and_sig_as_C_string(resolved_klass(), |
0 | 976 sel_method->name(), |
977 sel_method->signature())); | |
978 } | |
979 | |
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980 if (TraceItables && Verbose) { |
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981 ResourceMark rm(THREAD); |
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982 tty->print("invokespecial selected method: resolved-class:%s, method:%s, method_holder:%s, access_flags: ", |
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983 (resolved_klass.is_null() ? "<NULL>" : resolved_klass->internal_name()), |
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984 Method::name_and_sig_as_C_string(resolved_klass(), |
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985 sel_method->name(), |
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986 sel_method->signature()), |
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987 sel_method->method_holder()->internal_name() |
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988 ); |
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989 sel_method->access_flags().print_on(tty); |
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990 if (sel_method->is_default_method()) { |
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991 tty->print("default"); |
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992 } |
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993 if (sel_method->is_overpass()) { |
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994 tty->print("overpass"); |
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995 } |
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996 tty->cr(); |
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997 } |
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998 |
0 | 999 // setup result |
1000 result.set_static(resolved_klass, sel_method, CHECK); | |
1001 } | |
1002 | |
1003 void LinkResolver::resolve_virtual_call(CallInfo& result, Handle recv, KlassHandle receiver_klass, KlassHandle resolved_klass, | |
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1004 Symbol* method_name, Symbol* method_signature, KlassHandle current_klass, |
0 | 1005 bool check_access, bool check_null_and_abstract, TRAPS) { |
1006 methodHandle resolved_method; | |
1007 linktime_resolve_virtual_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK); | |
1008 runtime_resolve_virtual_method(result, resolved_method, resolved_klass, recv, receiver_klass, check_null_and_abstract, CHECK); | |
1009 } | |
1010 | |
1011 // throws linktime exceptions | |
1012 void LinkResolver::linktime_resolve_virtual_method(methodHandle &resolved_method, KlassHandle resolved_klass, | |
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1013 Symbol* method_name, Symbol* method_signature, |
0 | 1014 KlassHandle current_klass, bool check_access, TRAPS) { |
1015 // normal method resolution | |
1016 resolve_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK); | |
1017 | |
1018 assert(resolved_method->name() != vmSymbols::object_initializer_name(), "should have been checked in verifier"); | |
1019 assert(resolved_method->name() != vmSymbols::class_initializer_name (), "should have been checked in verifier"); | |
1020 | |
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1021 // check if private interface method |
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1022 if (resolved_klass->is_interface() && resolved_method->is_private()) { |
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1023 ResourceMark rm(THREAD); |
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1024 char buf[200]; |
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1025 jio_snprintf(buf, sizeof(buf), "private interface method requires invokespecial, not invokevirtual: method %s, caller-class:%s", |
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1026 Method::name_and_sig_as_C_string(resolved_klass(), |
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1027 resolved_method->name(), |
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1028 resolved_method->signature()), |
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1029 (current_klass.is_null() ? "<NULL>" : current_klass->internal_name())); |
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1030 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); |
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1031 } |
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1032 |
0 | 1033 // check if not static |
1034 if (resolved_method->is_static()) { | |
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1035 ResourceMark rm(THREAD); |
0 | 1036 char buf[200]; |
6983 | 1037 jio_snprintf(buf, sizeof(buf), "Expecting non-static method %s", Method::name_and_sig_as_C_string(resolved_klass(), |
0 | 1038 resolved_method->name(), |
1039 resolved_method->signature())); | |
1040 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); | |
1041 } | |
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1042 |
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1043 if (PrintVtables && Verbose) { |
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1044 ResourceMark rm(THREAD); |
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1045 tty->print("invokevirtual resolved method: caller-class:%s, compile-time-class:%s, method:%s, method_holder:%s, access_flags: ", |
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1046 (current_klass.is_null() ? "<NULL>" : current_klass->internal_name()), |
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1047 (resolved_klass.is_null() ? "<NULL>" : resolved_klass->internal_name()), |
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1048 Method::name_and_sig_as_C_string(resolved_klass(), |
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1049 resolved_method->name(), |
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1050 resolved_method->signature()), |
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1051 resolved_method->method_holder()->internal_name() |
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1052 ); |
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1053 resolved_method->access_flags().print_on(tty); |
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1054 if (resolved_method->is_default_method()) { |
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1055 tty->print("default"); |
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1056 } |
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1057 if (resolved_method->is_overpass()) { |
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1058 tty->print("overpass"); |
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1059 } |
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1060 tty->cr(); |
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1061 } |
0 | 1062 } |
1063 | |
1064 // throws runtime exceptions | |
1065 void LinkResolver::runtime_resolve_virtual_method(CallInfo& result, | |
1066 methodHandle resolved_method, | |
1067 KlassHandle resolved_klass, | |
1068 Handle recv, | |
1069 KlassHandle recv_klass, | |
1070 bool check_null_and_abstract, | |
1071 TRAPS) { | |
1072 | |
1073 // setup default return values | |
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1074 int vtable_index = Method::invalid_vtable_index; |
0 | 1075 methodHandle selected_method; |
1076 | |
1077 assert(recv.is_null() || recv->is_oop(), "receiver is not an oop"); | |
1078 | |
1079 // runtime method resolution | |
1080 if (check_null_and_abstract && recv.is_null()) { // check if receiver exists | |
1081 THROW(vmSymbols::java_lang_NullPointerException()); | |
1082 } | |
1083 | |
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1084 // Virtual methods cannot be resolved before its klass has been linked, for otherwise the Method*'s |
0 | 1085 // has not been rewritten, and the vtable initialized. Make sure to do this after the nullcheck, since |
1086 // a missing receiver might result in a bogus lookup. | |
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1087 assert(resolved_method->method_holder()->is_linked(), "must be linked"); |
0 | 1088 |
1089 // do lookup based on receiver klass using the vtable index | |
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1090 if (resolved_method->method_holder()->is_interface()) { // miranda method |
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1091 vtable_index = vtable_index_of_interface_method(resolved_klass, |
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1092 resolved_method, CHECK); |
0 | 1093 assert(vtable_index >= 0 , "we should have valid vtable index at this point"); |
1094 | |
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1095 InstanceKlass* inst = InstanceKlass::cast(recv_klass()); |
0 | 1096 selected_method = methodHandle(THREAD, inst->method_at_vtable(vtable_index)); |
1097 } else { | |
1098 // at this point we are sure that resolved_method is virtual and not | |
1099 // a miranda method; therefore, it must have a valid vtable index. | |
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1100 assert(!resolved_method->has_itable_index(), ""); |
0 | 1101 vtable_index = resolved_method->vtable_index(); |
1102 // We could get a negative vtable_index for final methods, | |
1103 // because as an optimization they are they are never put in the vtable, | |
1104 // unless they override an existing method. | |
1105 // If we do get a negative, it means the resolved method is the the selected | |
1106 // method, and it can never be changed by an override. | |
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1107 if (vtable_index == Method::nonvirtual_vtable_index) { |
0 | 1108 assert(resolved_method->can_be_statically_bound(), "cannot override this method"); |
1109 selected_method = resolved_method; | |
1110 } else { | |
1111 // recv_klass might be an arrayKlassOop but all vtables start at | |
1112 // the same place. The cast is to avoid virtual call and assertion. | |
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1113 InstanceKlass* inst = (InstanceKlass*)recv_klass(); |
0 | 1114 selected_method = methodHandle(THREAD, inst->method_at_vtable(vtable_index)); |
1115 } | |
1116 } | |
1117 | |
1118 // check if method exists | |
1119 if (selected_method.is_null()) { | |
1120 ResourceMark rm(THREAD); | |
1121 THROW_MSG(vmSymbols::java_lang_AbstractMethodError(), | |
6983 | 1122 Method::name_and_sig_as_C_string(resolved_klass(), |
0 | 1123 resolved_method->name(), |
1124 resolved_method->signature())); | |
1125 } | |
1126 | |
1127 // check if abstract | |
1128 if (check_null_and_abstract && selected_method->is_abstract()) { | |
1129 ResourceMark rm(THREAD); | |
1130 THROW_MSG(vmSymbols::java_lang_AbstractMethodError(), | |
6983 | 1131 Method::name_and_sig_as_C_string(resolved_klass(), |
0 | 1132 selected_method->name(), |
1133 selected_method->signature())); | |
1134 } | |
1135 | |
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1136 if (PrintVtables && Verbose) { |
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1137 ResourceMark rm(THREAD); |
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1138 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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1139 (recv_klass.is_null() ? "<NULL>" : recv_klass->internal_name()), |
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1140 (resolved_klass.is_null() ? "<NULL>" : resolved_klass->internal_name()), |
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1141 Method::name_and_sig_as_C_string(resolved_klass(), |
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1142 resolved_method->name(), |
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1143 resolved_method->signature()), |
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1144 selected_method->method_holder()->internal_name(), |
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1145 vtable_index |
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1146 ); |
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1147 selected_method->access_flags().print_on(tty); |
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1148 if (selected_method->is_default_method()) { |
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1149 tty->print("default"); |
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1150 } |
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1151 if (selected_method->is_overpass()) { |
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1152 tty->print("overpass"); |
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1153 } |
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1154 tty->cr(); |
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1155 } |
0 | 1156 // setup result |
1157 result.set_virtual(resolved_klass, recv_klass, resolved_method, selected_method, vtable_index, CHECK); | |
1158 } | |
1159 | |
1160 void LinkResolver::resolve_interface_call(CallInfo& result, Handle recv, KlassHandle recv_klass, KlassHandle resolved_klass, | |
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1161 Symbol* method_name, Symbol* method_signature, KlassHandle current_klass, |
0 | 1162 bool check_access, bool check_null_and_abstract, TRAPS) { |
1163 methodHandle resolved_method; | |
1164 linktime_resolve_interface_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK); | |
1165 runtime_resolve_interface_method(result, resolved_method, resolved_klass, recv, recv_klass, check_null_and_abstract, CHECK); | |
1166 } | |
1167 | |
1168 // throws linktime exceptions | |
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1169 void LinkResolver::linktime_resolve_interface_method(methodHandle& resolved_method, KlassHandle resolved_klass, Symbol* method_name, |
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1170 Symbol* method_signature, KlassHandle current_klass, bool check_access, TRAPS) { |
0 | 1171 // normal interface method resolution |
1172 resolve_interface_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK); | |
1173 | |
1174 assert(resolved_method->name() != vmSymbols::object_initializer_name(), "should have been checked in verifier"); | |
1175 assert(resolved_method->name() != vmSymbols::class_initializer_name (), "should have been checked in verifier"); | |
1176 } | |
1177 | |
1178 // throws runtime exceptions | |
1179 void LinkResolver::runtime_resolve_interface_method(CallInfo& result, methodHandle resolved_method, KlassHandle resolved_klass, | |
1180 Handle recv, KlassHandle recv_klass, bool check_null_and_abstract, TRAPS) { | |
1181 // check if receiver exists | |
1182 if (check_null_and_abstract && recv.is_null()) { | |
1183 THROW(vmSymbols::java_lang_NullPointerException()); | |
1184 } | |
1185 | |
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1186 // check if private interface method |
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1187 if (resolved_klass->is_interface() && resolved_method->is_private()) { |
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1188 ResourceMark rm(THREAD); |
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1189 char buf[200]; |
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1190 jio_snprintf(buf, sizeof(buf), "private interface method requires invokespecial, not invokeinterface: method %s", |
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1191 Method::name_and_sig_as_C_string(resolved_klass(), |
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1192 resolved_method->name(), |
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1193 resolved_method->signature())); |
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1194 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); |
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1195 } |
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1196 |
0 | 1197 // check if receiver klass implements the resolved interface |
1198 if (!recv_klass->is_subtype_of(resolved_klass())) { | |
3324
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|
1199 ResourceMark rm(THREAD); |
0 | 1200 char buf[200]; |
1201 jio_snprintf(buf, sizeof(buf), "Class %s does not implement the requested interface %s", | |
6983 | 1202 recv_klass()->external_name(), |
1203 resolved_klass()->external_name()); | |
0 | 1204 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); |
1205 } | |
1206 // do lookup based on receiver klass | |
1207 methodHandle sel_method; | |
1208 lookup_instance_method_in_klasses(sel_method, recv_klass, | |
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1209 resolved_method->name(), |
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1210 resolved_method->signature(), CHECK); |
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1211 if (sel_method.is_null() && !check_null_and_abstract) { |
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1212 // In theory this is a harmless placeholder value, but |
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1213 // in practice leaving in null affects the nsk default method tests. |
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1214 // This needs further study. |
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|
1215 sel_method = resolved_method; |
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|
1216 } |
0 | 1217 // check if method exists |
1218 if (sel_method.is_null()) { | |
1219 ResourceMark rm(THREAD); | |
1220 THROW_MSG(vmSymbols::java_lang_AbstractMethodError(), | |
6983 | 1221 Method::name_and_sig_as_C_string(recv_klass(), |
0 | 1222 resolved_method->name(), |
1223 resolved_method->signature())); | |
1224 } | |
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|
1225 // check access |
12318
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1226 // Throw Illegal Access Error if sel_method is not public. |
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1227 if (!sel_method->is_public()) { |
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1228 ResourceMark rm(THREAD); |
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1229 THROW_MSG(vmSymbols::java_lang_IllegalAccessError(), |
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1230 Method::name_and_sig_as_C_string(recv_klass(), |
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1231 sel_method->name(), |
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1232 sel_method->signature())); |
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|
1233 } |
0 | 1234 // check if abstract |
1235 if (check_null_and_abstract && sel_method->is_abstract()) { | |
1236 ResourceMark rm(THREAD); | |
1237 THROW_MSG(vmSymbols::java_lang_AbstractMethodError(), | |
6983 | 1238 Method::name_and_sig_as_C_string(recv_klass(), |
0 | 1239 sel_method->name(), |
1240 sel_method->signature())); | |
1241 } | |
1242 // setup result | |
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1243 if (!resolved_method->has_itable_index()) { |
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1244 int vtable_index = resolved_method->vtable_index(); |
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1245 assert(vtable_index == sel_method->vtable_index(), "sanity check"); |
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1246 result.set_virtual(resolved_klass, recv_klass, resolved_method, sel_method, vtable_index, CHECK); |
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|
1247 return; |
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|
1248 } |
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|
1249 int itable_index = resolved_method()->itable_index(); |
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1250 |
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1251 if (TraceItables && Verbose) { |
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|
1252 ResourceMark rm(THREAD); |
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|
1253 tty->print("invokeinterface selected method: receiver-class:%s, resolved-class:%s, method:%s, method_holder:%s, access_flags: ", |
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|
1254 (recv_klass.is_null() ? "<NULL>" : recv_klass->internal_name()), |
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1255 (resolved_klass.is_null() ? "<NULL>" : resolved_klass->internal_name()), |
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|
1256 Method::name_and_sig_as_C_string(resolved_klass(), |
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|
1257 resolved_method->name(), |
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|
1258 resolved_method->signature()), |
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|
1259 sel_method->method_holder()->internal_name() |
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|
1260 ); |
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|
1261 sel_method->access_flags().print_on(tty); |
12823
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|
1262 if (sel_method->is_default_method()) { |
12318
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|
1263 tty->print("default"); |
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|
1264 } |
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|
1265 if (sel_method->is_overpass()) { |
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|
1266 tty->print("overpass"); |
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|
1267 } |
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|
1268 tty->cr(); |
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|
1269 } |
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1270 result.set_interface(resolved_klass, recv_klass, resolved_method, sel_method, itable_index, CHECK); |
0 | 1271 } |
1272 | |
1273 | |
1274 methodHandle LinkResolver::linktime_resolve_interface_method_or_null( | |
1275 KlassHandle resolved_klass, | |
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1276 Symbol* method_name, |
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|
1277 Symbol* method_signature, |
0 | 1278 KlassHandle current_klass, |
1279 bool check_access) { | |
1280 EXCEPTION_MARK; | |
1281 methodHandle method_result; | |
1282 linktime_resolve_interface_method(method_result, resolved_klass, method_name, method_signature, current_klass, check_access, THREAD); | |
1283 if (HAS_PENDING_EXCEPTION) { | |
1284 CLEAR_PENDING_EXCEPTION; | |
1285 return methodHandle(); | |
1286 } else { | |
1287 return method_result; | |
1288 } | |
1289 } | |
1290 | |
1291 methodHandle LinkResolver::linktime_resolve_virtual_method_or_null( | |
1292 KlassHandle resolved_klass, | |
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1293 Symbol* method_name, |
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1294 Symbol* method_signature, |
0 | 1295 KlassHandle current_klass, |
1296 bool check_access) { | |
1297 EXCEPTION_MARK; | |
1298 methodHandle method_result; | |
1299 linktime_resolve_virtual_method(method_result, resolved_klass, method_name, method_signature, current_klass, check_access, THREAD); | |
1300 if (HAS_PENDING_EXCEPTION) { | |
1301 CLEAR_PENDING_EXCEPTION; | |
1302 return methodHandle(); | |
1303 } else { | |
1304 return method_result; | |
1305 } | |
1306 } | |
1307 | |
1308 methodHandle LinkResolver::resolve_virtual_call_or_null( | |
1309 KlassHandle receiver_klass, | |
1310 KlassHandle resolved_klass, | |
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1311 Symbol* name, |
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|
1312 Symbol* signature, |
0 | 1313 KlassHandle current_klass) { |
1314 EXCEPTION_MARK; | |
1315 CallInfo info; | |
1316 resolve_virtual_call(info, Handle(), receiver_klass, resolved_klass, name, signature, current_klass, true, false, THREAD); | |
1317 if (HAS_PENDING_EXCEPTION) { | |
1318 CLEAR_PENDING_EXCEPTION; | |
1319 return methodHandle(); | |
1320 } | |
1321 return info.selected_method(); | |
1322 } | |
1323 | |
1324 methodHandle LinkResolver::resolve_interface_call_or_null( | |
1325 KlassHandle receiver_klass, | |
1326 KlassHandle resolved_klass, | |
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|
1327 Symbol* name, |
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|
1328 Symbol* signature, |
0 | 1329 KlassHandle current_klass) { |
1330 EXCEPTION_MARK; | |
1331 CallInfo info; | |
1332 resolve_interface_call(info, Handle(), receiver_klass, resolved_klass, name, signature, current_klass, true, false, THREAD); | |
1333 if (HAS_PENDING_EXCEPTION) { | |
1334 CLEAR_PENDING_EXCEPTION; | |
1335 return methodHandle(); | |
1336 } | |
1337 return info.selected_method(); | |
1338 } | |
1339 | |
1340 int LinkResolver::resolve_virtual_vtable_index( | |
1341 KlassHandle receiver_klass, | |
1342 KlassHandle resolved_klass, | |
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1343 Symbol* name, |
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|
1344 Symbol* signature, |
0 | 1345 KlassHandle current_klass) { |
1346 EXCEPTION_MARK; | |
1347 CallInfo info; | |
1348 resolve_virtual_call(info, Handle(), receiver_klass, resolved_klass, name, signature, current_klass, true, false, THREAD); | |
1349 if (HAS_PENDING_EXCEPTION) { | |
1350 CLEAR_PENDING_EXCEPTION; | |
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1351 return Method::invalid_vtable_index; |
0 | 1352 } |
1353 return info.vtable_index(); | |
1354 } | |
1355 | |
1356 methodHandle LinkResolver::resolve_static_call_or_null( | |
1357 KlassHandle resolved_klass, | |
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|
1358 Symbol* name, |
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|
1359 Symbol* signature, |
0 | 1360 KlassHandle current_klass) { |
1361 EXCEPTION_MARK; | |
1362 CallInfo info; | |
1363 resolve_static_call(info, resolved_klass, name, signature, current_klass, true, false, THREAD); | |
1364 if (HAS_PENDING_EXCEPTION) { | |
1365 CLEAR_PENDING_EXCEPTION; | |
1366 return methodHandle(); | |
1367 } | |
1368 return info.selected_method(); | |
1369 } | |
1370 | |
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1371 methodHandle LinkResolver::resolve_special_call_or_null(KlassHandle resolved_klass, Symbol* name, Symbol* signature, |
0 | 1372 KlassHandle current_klass) { |
1373 EXCEPTION_MARK; | |
1374 CallInfo info; | |
1375 resolve_special_call(info, resolved_klass, name, signature, current_klass, true, THREAD); | |
1376 if (HAS_PENDING_EXCEPTION) { | |
1377 CLEAR_PENDING_EXCEPTION; | |
1378 return methodHandle(); | |
1379 } | |
1380 return info.selected_method(); | |
1381 } | |
1382 | |
1383 | |
1384 | |
1385 //------------------------------------------------------------------------------------------------------------------------ | |
1386 // ConstantPool entries | |
1387 | |
1388 void LinkResolver::resolve_invoke(CallInfo& result, Handle recv, constantPoolHandle pool, int index, Bytecodes::Code byte, TRAPS) { | |
1389 switch (byte) { | |
1390 case Bytecodes::_invokestatic : resolve_invokestatic (result, pool, index, CHECK); break; | |
1391 case Bytecodes::_invokespecial : resolve_invokespecial (result, pool, index, CHECK); break; | |
1392 case Bytecodes::_invokevirtual : resolve_invokevirtual (result, recv, pool, index, CHECK); break; | |
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1393 case Bytecodes::_invokehandle : resolve_invokehandle (result, pool, index, CHECK); break; |
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1394 case Bytecodes::_invokedynamic : resolve_invokedynamic (result, pool, index, CHECK); break; |
0 | 1395 case Bytecodes::_invokeinterface: resolve_invokeinterface(result, recv, pool, index, CHECK); break; |
1396 } | |
1397 return; | |
1398 } | |
1399 | |
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1400 void LinkResolver::resolve_pool(KlassHandle& resolved_klass, Symbol*& method_name, Symbol*& method_signature, |
0 | 1401 KlassHandle& current_klass, constantPoolHandle pool, int index, TRAPS) { |
1402 // resolve klass | |
1403 resolve_klass(resolved_klass, pool, index, CHECK); | |
1404 | |
1405 // Get name, signature, and static klass | |
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1406 method_name = pool->name_ref_at(index); |
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1407 method_signature = pool->signature_ref_at(index); |
0 | 1408 current_klass = KlassHandle(THREAD, pool->pool_holder()); |
1409 } | |
1410 | |
1411 | |
1412 void LinkResolver::resolve_invokestatic(CallInfo& result, 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); | |
1418 resolve_static_call(result, resolved_klass, method_name, method_signature, current_klass, true, true, CHECK); | |
1419 } | |
1420 | |
1421 | |
1422 void LinkResolver::resolve_invokespecial(CallInfo& result, constantPoolHandle pool, int index, TRAPS) { | |
1423 KlassHandle resolved_klass; | |
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1424 Symbol* method_name = NULL; |
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1425 Symbol* method_signature = NULL; |
0 | 1426 KlassHandle current_klass; |
1427 resolve_pool(resolved_klass, method_name, method_signature, current_klass, pool, index, CHECK); | |
1428 resolve_special_call(result, resolved_klass, method_name, method_signature, current_klass, true, CHECK); | |
1429 } | |
1430 | |
1431 | |
1432 void LinkResolver::resolve_invokevirtual(CallInfo& result, Handle recv, | |
1433 constantPoolHandle pool, int index, | |
1434 TRAPS) { | |
1435 | |
1436 KlassHandle resolved_klass; | |
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1437 Symbol* method_name = NULL; |
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1438 Symbol* method_signature = NULL; |
0 | 1439 KlassHandle current_klass; |
1440 resolve_pool(resolved_klass, method_name, method_signature, current_klass, pool, index, CHECK); | |
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1441 KlassHandle recvrKlass (THREAD, recv.is_null() ? (Klass*)NULL : recv->klass()); |
0 | 1442 resolve_virtual_call(result, recv, recvrKlass, resolved_klass, method_name, method_signature, current_klass, true, true, CHECK); |
1443 } | |
1444 | |
1445 | |
1446 void LinkResolver::resolve_invokeinterface(CallInfo& result, Handle recv, constantPoolHandle pool, int index, TRAPS) { | |
1447 KlassHandle resolved_klass; | |
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1448 Symbol* method_name = NULL; |
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1449 Symbol* method_signature = NULL; |
0 | 1450 KlassHandle current_klass; |
1451 resolve_pool(resolved_klass, method_name, method_signature, current_klass, pool, index, CHECK); | |
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1452 KlassHandle recvrKlass (THREAD, recv.is_null() ? (Klass*)NULL : recv->klass()); |
0 | 1453 resolve_interface_call(result, recv, recvrKlass, resolved_klass, method_name, method_signature, current_klass, true, true, CHECK); |
1454 } | |
1455 | |
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1456 |
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1457 void LinkResolver::resolve_invokehandle(CallInfo& result, constantPoolHandle pool, int index, TRAPS) { |
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|
1458 assert(EnableInvokeDynamic, ""); |
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1459 // This guy is reached from InterpreterRuntime::resolve_invokehandle. |
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1460 KlassHandle resolved_klass; |
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|
1461 Symbol* method_name = NULL; |
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|
1462 Symbol* method_signature = NULL; |
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|
1463 KlassHandle current_klass; |
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|
1464 resolve_pool(resolved_klass, method_name, method_signature, current_klass, pool, index, CHECK); |
9082 | 1465 if (TraceMethodHandles) { |
1466 ResourceMark rm(THREAD); | |
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1467 tty->print_cr("resolve_invokehandle %s %s", method_name->as_C_string(), method_signature->as_C_string()); |
9082 | 1468 } |
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1469 resolve_handle_call(result, resolved_klass, method_name, method_signature, current_klass, CHECK); |
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1470 } |
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|
1471 |
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1472 void LinkResolver::resolve_handle_call(CallInfo& result, KlassHandle resolved_klass, |
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1473 Symbol* method_name, Symbol* method_signature, |
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|
1474 KlassHandle current_klass, |
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|
1475 TRAPS) { |
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|
1476 // JSR 292: this must be an implicitly generated method MethodHandle.invokeExact(*...) or similar |
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|
1477 assert(resolved_klass() == SystemDictionary::MethodHandle_klass(), ""); |
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1478 assert(MethodHandles::is_signature_polymorphic_name(method_name), ""); |
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1479 methodHandle resolved_method; |
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1480 Handle resolved_appendix; |
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1481 Handle resolved_method_type; |
6266
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1482 lookup_polymorphic_method(resolved_method, resolved_klass, |
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|
1483 method_name, method_signature, |
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1484 current_klass, &resolved_appendix, &resolved_method_type, CHECK); |
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1485 result.set_handle(resolved_method, resolved_appendix, resolved_method_type, CHECK); |
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1486 } |
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1487 |
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|
1488 |
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|
1489 void LinkResolver::resolve_invokedynamic(CallInfo& result, constantPoolHandle pool, int index, TRAPS) { |
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|
1490 assert(EnableInvokeDynamic, ""); |
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1491 |
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1492 //resolve_pool(<resolved_klass>, method_name, method_signature, current_klass, pool, index, CHECK); |
6266
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1493 Symbol* method_name = pool->name_ref_at(index); |
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1494 Symbol* method_signature = pool->signature_ref_at(index); |
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1495 KlassHandle current_klass = KlassHandle(THREAD, pool->pool_holder()); |
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1496 |
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1497 // Resolve the bootstrap specifier (BSM + optional arguments). |
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1498 Handle bootstrap_specifier; |
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|
1499 // Check if CallSite has been bound already: |
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1500 ConstantPoolCacheEntry* cpce = pool->invokedynamic_cp_cache_entry_at(index); |
6266
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1501 if (cpce->is_f1_null()) { |
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1502 int pool_index = cpce->constant_pool_index(); |
6266
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1503 oop bsm_info = pool->resolve_bootstrap_specifier_at(pool_index, CHECK); |
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1504 assert(bsm_info != NULL, ""); |
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1505 // FIXME: Cache this once per BootstrapMethods entry, not once per CONSTANT_InvokeDynamic. |
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1506 bootstrap_specifier = Handle(THREAD, bsm_info); |
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|
1507 } |
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|
1508 if (!cpce->is_f1_null()) { |
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1509 methodHandle method( THREAD, cpce->f1_as_method()); |
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1510 Handle appendix( THREAD, cpce->appendix_if_resolved(pool)); |
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1511 Handle method_type(THREAD, cpce->method_type_if_resolved(pool)); |
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1512 result.set_handle(method, appendix, method_type, CHECK); |
6266
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1513 return; |
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|
1514 } |
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|
1515 |
6266
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1516 if (TraceMethodHandles) { |
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1517 ResourceMark rm(THREAD); |
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1518 tty->print_cr("resolve_invokedynamic #%d %s %s", |
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|
1519 ConstantPool::decode_invokedynamic_index(index), |
6266
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1520 method_name->as_C_string(), method_signature->as_C_string()); |
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1521 tty->print(" BSM info: "); bootstrap_specifier->print(); |
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|
1522 } |
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|
1523 |
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|
1524 resolve_dynamic_call(result, bootstrap_specifier, method_name, method_signature, current_klass, CHECK); |
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|
1525 } |
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|
1526 |
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|
1527 void LinkResolver::resolve_dynamic_call(CallInfo& result, |
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|
1528 Handle bootstrap_specifier, |
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|
1529 Symbol* method_name, Symbol* method_signature, |
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|
1530 KlassHandle current_klass, |
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|
1531 TRAPS) { |
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|
1532 // JSR 292: this must resolve to an implicitly generated method MH.linkToCallSite(*...) |
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|
1533 // The appendix argument is likely to be a freshly-created CallSite. |
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|
1534 Handle resolved_appendix; |
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|
1535 Handle resolved_method_type; |
6266
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|
1536 methodHandle resolved_method = |
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|
1537 SystemDictionary::find_dynamic_call_site_invoker(current_klass, |
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|
1538 bootstrap_specifier, |
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changeset
|
1539 method_name, method_signature, |
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|
1540 &resolved_appendix, |
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|
1541 &resolved_method_type, |
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|
1542 THREAD); |
3744
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|
1543 if (HAS_PENDING_EXCEPTION) { |
6266
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|
1544 if (TraceMethodHandles) { |
12316
190899198332
7195622: CheckUnhandledOops has limited usefulness now
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12264
diff
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|
1545 tty->print_cr("invokedynamic throws BSME for "INTPTR_FORMAT, (void *)PENDING_EXCEPTION); |
6266
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|
1546 PENDING_EXCEPTION->print(); |
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|
1547 } |
3744
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|
1548 if (PENDING_EXCEPTION->is_a(SystemDictionary::BootstrapMethodError_klass())) { |
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|
1549 // throw these guys, since they are already wrapped |
60b8287df30e
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|
1550 return; |
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|
1551 } |
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|
1552 if (!PENDING_EXCEPTION->is_a(SystemDictionary::LinkageError_klass())) { |
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7049415: Failure of resolution of sym.reference to the c.s.s. should be wrapped in BootstrapMethodError
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|
1553 // intercept only LinkageErrors which might have failed to wrap |
60b8287df30e
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changeset
|
1554 return; |
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|
1555 } |
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|
1556 // See the "Linking Exceptions" section for the invokedynamic instruction in the JVMS. |
6266
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|
1557 Handle nested_exception(THREAD, PENDING_EXCEPTION); |
3744
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changeset
|
1558 CLEAR_PENDING_EXCEPTION; |
6729
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|
1559 THROW_CAUSE(vmSymbols::java_lang_BootstrapMethodError(), nested_exception) |
3744
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|
1560 } |
6822
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|
1561 result.set_handle(resolved_method, resolved_appendix, resolved_method_type, CHECK); |
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|
1562 } |
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|
1563 |
0 | 1564 //------------------------------------------------------------------------------------------------------------------------ |
1565 #ifndef PRODUCT | |
1566 | |
12264
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|
1567 void CallInfo::print() { |
0 | 1568 ResourceMark rm; |
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|
1569 const char* kindstr = "unknown"; |
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|
1570 switch (_call_kind) { |
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|
1571 case direct_call: kindstr = "direct"; break; |
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|
1572 case vtable_call: kindstr = "vtable"; break; |
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changeset
|
1573 case itable_call: kindstr = "itable"; break; |
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|
1574 } |
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|
1575 tty->print_cr("Call %s@%d %s", kindstr, _call_index, |
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|
1576 _resolved_method.is_null() ? "(none)" : _resolved_method->name_and_sig_as_C_string()); |
0 | 1577 } |
1578 | |
1579 #endif |