Mercurial > hg > truffle
annotate src/share/vm/interpreter/linkResolver.cpp @ 18004:ee1c924763d2
8043546: C1 optimizes @Stable instance fields with default values
Reviewed-by: kvn, jrose
author | vlivanov |
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date | Thu, 10 Jul 2014 12:04:43 -0700 |
parents | 78bbf4d43a14 |
children | 52b4284cb496 54bc75c144b0 |
rev | line source |
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0 | 1 /* |
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2 * Copyright (c) 1997, 2014, 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 default or 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 = LinkResolver::vtable_index_of_interface_method(resolved_klass, |
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159 resolved_method); |
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160 assert(index >= 0 , "we should have valid vtable index at this point"); |
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161 |
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162 kind = CallInfo::vtable_call; |
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163 } else if (resolved_method->has_vtable_index()) { |
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164 // Can occur if an interface redeclares a method of Object. |
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165 |
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166 #ifdef ASSERT |
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167 // Ensure that this is really the case. |
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168 KlassHandle object_klass = SystemDictionary::Object_klass(); |
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169 Method * object_resolved_method = object_klass()->vtable()->method_at(index); |
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170 assert(object_resolved_method->name() == resolved_method->name(), |
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171 err_msg("Object and interface method names should match at vtable index %d, %s != %s", |
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172 index, object_resolved_method->name()->as_C_string(), resolved_method->name()->as_C_string())); |
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173 assert(object_resolved_method->signature() == resolved_method->signature(), |
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174 err_msg("Object and interface method signatures should match at vtable index %d, %s != %s", |
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175 index, object_resolved_method->signature()->as_C_string(), resolved_method->signature()->as_C_string())); |
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176 #endif // ASSERT |
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177 |
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178 kind = CallInfo::vtable_call; |
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179 } else { |
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180 // A regular interface call. |
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181 kind = CallInfo::itable_call; |
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182 index = resolved_method->itable_index(); |
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183 } |
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184 assert(index == Method::nonvirtual_vtable_index || index >= 0, err_msg("bad index %d", index)); |
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185 _call_kind = kind; |
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186 _call_index = index; |
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187 _resolved_appendix = Handle(); |
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188 DEBUG_ONLY(verify()); |
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189 } |
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190 |
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191 #ifdef ASSERT |
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192 void CallInfo::verify() { |
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193 switch (call_kind()) { // the meaning and allowed value of index depends on kind |
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194 case CallInfo::direct_call: |
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195 if (_call_index == Method::nonvirtual_vtable_index) break; |
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196 // else fall through to check vtable index: |
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197 case CallInfo::vtable_call: |
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198 assert(resolved_klass()->verify_vtable_index(_call_index), ""); |
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199 break; |
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200 case CallInfo::itable_call: |
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201 assert(resolved_method()->method_holder()->verify_itable_index(_call_index), ""); |
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202 break; |
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203 case CallInfo::unknown_kind: |
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204 assert(call_kind() != CallInfo::unknown_kind, "CallInfo must be set"); |
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205 break; |
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206 default: |
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207 fatal(err_msg_res("Unexpected call kind %d", call_kind())); |
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208 } |
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209 } |
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210 #endif //ASSERT |
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211 |
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212 |
0 | 213 |
214 //------------------------------------------------------------------------------------------------------------------------ | |
215 // Klass resolution | |
216 | |
217 void LinkResolver::check_klass_accessability(KlassHandle ref_klass, KlassHandle sel_klass, TRAPS) { | |
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218 if (!Reflection::verify_class_access(ref_klass(), |
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219 sel_klass(), |
0 | 220 true)) { |
221 ResourceMark rm(THREAD); | |
222 Exceptions::fthrow( | |
223 THREAD_AND_LOCATION, | |
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224 vmSymbols::java_lang_IllegalAccessError(), |
0 | 225 "tried to access class %s from class %s", |
226 sel_klass->external_name(), | |
227 ref_klass->external_name() | |
228 ); | |
229 return; | |
230 } | |
231 } | |
232 | |
233 void LinkResolver::resolve_klass(KlassHandle& result, constantPoolHandle pool, int index, TRAPS) { | |
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234 Klass* result_oop = pool->klass_ref_at(index, CHECK); |
0 | 235 result = KlassHandle(THREAD, result_oop); |
236 } | |
237 | |
238 //------------------------------------------------------------------------------------------------------------------------ | |
239 // Method resolution | |
240 // | |
241 // According to JVM spec. $5.4.3c & $5.4.3d | |
242 | |
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243 // Look up method in klasses, including static methods |
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244 // Then look up local default methods |
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245 void LinkResolver::lookup_method_in_klasses(methodHandle& result, KlassHandle klass, Symbol* name, Symbol* signature, bool checkpolymorphism, bool in_imethod_resolve, TRAPS) { |
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246 // Ignore overpasses so statics can be found during resolution |
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247 Method* result_oop = klass->uncached_lookup_method(name, signature, Klass::skip_overpass); |
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248 |
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249 // JDK 8, JVMS 5.4.3.4: Interface method resolution should |
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250 // ignore static and non-public methods of java.lang.Object, |
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251 // like clone, finalize, registerNatives. |
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252 if (in_imethod_resolve && |
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253 result_oop != NULL && |
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254 klass->is_interface() && |
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255 (result_oop->is_static() || !result_oop->is_public()) && |
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256 result_oop->method_holder() == SystemDictionary::Object_klass()) { |
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257 result_oop = NULL; |
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258 } |
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259 |
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260 // Before considering default methods, check for an overpass in the |
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261 // current class if a method has not been found. |
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262 if (result_oop == NULL) { |
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263 result_oop = InstanceKlass::cast(klass())->find_method(name, signature); |
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264 } |
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265 |
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266 if (result_oop == NULL) { |
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267 Array<Method*>* default_methods = InstanceKlass::cast(klass())->default_methods(); |
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268 if (default_methods != NULL) { |
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269 result_oop = InstanceKlass::find_method(default_methods, name, signature); |
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270 } |
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271 } |
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272 |
13413 | 273 if (checkpolymorphism && EnableInvokeDynamic && result_oop != NULL) { |
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274 vmIntrinsics::ID iid = result_oop->intrinsic_id(); |
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275 if (MethodHandles::is_signature_polymorphic(iid)) { |
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276 // Do not link directly to these. The VM must produce a synthetic one using lookup_polymorphic_method. |
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277 return; |
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278 } |
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279 } |
0 | 280 result = methodHandle(THREAD, result_oop); |
281 } | |
282 | |
283 // returns first instance method | |
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284 // Looks up method in classes, then looks up local default methods |
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285 void LinkResolver::lookup_instance_method_in_klasses(methodHandle& result, KlassHandle klass, Symbol* name, Symbol* signature, TRAPS) { |
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286 Method* result_oop = klass->uncached_lookup_method(name, signature, Klass::normal); |
0 | 287 result = methodHandle(THREAD, result_oop); |
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288 while (!result.is_null() && result->is_static() && result->method_holder()->super() != NULL) { |
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289 KlassHandle super_klass = KlassHandle(THREAD, result->method_holder()->super()); |
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290 result = methodHandle(THREAD, super_klass->uncached_lookup_method(name, signature, Klass::normal)); |
0 | 291 } |
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292 |
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293 if (result.is_null()) { |
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294 Array<Method*>* default_methods = InstanceKlass::cast(klass())->default_methods(); |
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295 if (default_methods != NULL) { |
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296 result = methodHandle(InstanceKlass::find_method(default_methods, name, signature)); |
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297 assert(result.is_null() || !result->is_static(), "static defaults not allowed"); |
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298 } |
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299 } |
0 | 300 } |
301 | |
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302 int LinkResolver::vtable_index_of_interface_method(KlassHandle klass, |
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303 methodHandle resolved_method) { |
0 | 304 |
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305 int vtable_index = Method::invalid_vtable_index; |
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306 Symbol* name = resolved_method->name(); |
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307 Symbol* signature = resolved_method->signature(); |
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308 |
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309 // First check in default method array |
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310 if (!resolved_method->is_abstract() && |
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311 (InstanceKlass::cast(klass())->default_methods() != NULL)) { |
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312 int index = InstanceKlass::find_method_index(InstanceKlass::cast(klass())->default_methods(), name, signature, false); |
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313 if (index >= 0 ) { |
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314 vtable_index = InstanceKlass::cast(klass())->default_vtable_indices()->at(index); |
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315 } |
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316 } |
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317 if (vtable_index == Method::invalid_vtable_index) { |
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318 // get vtable_index for miranda methods |
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319 ResourceMark rm; |
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320 klassVtable *vt = InstanceKlass::cast(klass())->vtable(); |
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321 vtable_index = vt->index_of_miranda(name, signature); |
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322 } |
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323 return vtable_index; |
0 | 324 } |
325 | |
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326 void LinkResolver::lookup_method_in_interfaces(methodHandle& result, KlassHandle klass, Symbol* name, Symbol* signature, TRAPS) { |
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327 InstanceKlass *ik = InstanceKlass::cast(klass()); |
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328 |
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329 // Specify 'true' in order to skip default methods when searching the |
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330 // interfaces. Function lookup_method_in_klasses() already looked for |
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331 // the method in the default methods table. |
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332 result = methodHandle(THREAD, ik->lookup_method_in_all_interfaces(name, signature, Klass::skip_defaults)); |
0 | 333 } |
334 | |
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335 void LinkResolver::lookup_polymorphic_method(methodHandle& result, |
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336 KlassHandle klass, Symbol* name, Symbol* full_signature, |
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337 KlassHandle current_klass, |
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338 Handle *appendix_result_or_null, |
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339 Handle *method_type_result, |
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340 TRAPS) { |
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341 vmIntrinsics::ID iid = MethodHandles::signature_polymorphic_name_id(name); |
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342 if (TraceMethodHandles) { |
9082 | 343 ResourceMark rm(THREAD); |
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344 tty->print_cr("lookup_polymorphic_method iid=%s %s.%s%s", |
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345 vmIntrinsics::name_at(iid), klass->external_name(), |
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346 name->as_C_string(), full_signature->as_C_string()); |
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347 } |
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348 if (EnableInvokeDynamic && |
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349 klass() == SystemDictionary::MethodHandle_klass() && |
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350 iid != vmIntrinsics::_none) { |
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351 if (MethodHandles::is_signature_polymorphic_intrinsic(iid)) { |
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352 // Most of these do not need an up-call to Java to resolve, so can be done anywhere. |
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353 // Do not erase last argument type (MemberName) if it is a static linkTo method. |
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354 bool keep_last_arg = MethodHandles::is_signature_polymorphic_static(iid); |
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355 TempNewSymbol basic_signature = |
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356 MethodHandles::lookup_basic_type_signature(full_signature, keep_last_arg, CHECK); |
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357 if (TraceMethodHandles) { |
9082 | 358 ResourceMark rm(THREAD); |
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359 tty->print_cr("lookup_polymorphic_method %s %s => basic %s", |
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360 name->as_C_string(), |
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361 full_signature->as_C_string(), |
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362 basic_signature->as_C_string()); |
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363 } |
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364 result = SystemDictionary::find_method_handle_intrinsic(iid, |
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365 basic_signature, |
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366 CHECK); |
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367 if (result.not_null()) { |
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368 assert(result->is_method_handle_intrinsic(), "MH.invokeBasic or MH.linkTo* intrinsic"); |
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369 assert(result->intrinsic_id() != vmIntrinsics::_invokeGeneric, "wrong place to find this"); |
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370 assert(basic_signature == result->signature(), "predict the result signature"); |
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371 if (TraceMethodHandles) { |
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372 tty->print("lookup_polymorphic_method => intrinsic "); |
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373 result->print_on(tty); |
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374 } |
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375 return; |
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376 } |
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377 } else if (iid == vmIntrinsics::_invokeGeneric |
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378 && !THREAD->is_Compiler_thread() |
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379 && appendix_result_or_null != NULL) { |
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380 // This is a method with type-checking semantics. |
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381 // We will ask Java code to spin an adapter method for it. |
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382 if (!MethodHandles::enabled()) { |
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383 // Make sure the Java part of the runtime has been booted up. |
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384 Klass* natives = SystemDictionary::MethodHandleNatives_klass(); |
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385 if (natives == NULL || InstanceKlass::cast(natives)->is_not_initialized()) { |
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386 SystemDictionary::resolve_or_fail(vmSymbols::java_lang_invoke_MethodHandleNatives(), |
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387 Handle(), |
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388 Handle(), |
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389 true, |
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390 CHECK); |
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391 } |
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392 } |
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393 |
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394 Handle appendix; |
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395 Handle method_type; |
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396 result = SystemDictionary::find_method_handle_invoker(name, |
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397 full_signature, |
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398 current_klass, |
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399 &appendix, |
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400 &method_type, |
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401 CHECK); |
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402 if (TraceMethodHandles) { |
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403 tty->print("lookup_polymorphic_method => (via Java) "); |
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404 result->print_on(tty); |
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405 tty->print(" lookup_polymorphic_method => appendix = "); |
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406 if (appendix.is_null()) tty->print_cr("(none)"); |
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407 else appendix->print_on(tty); |
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408 } |
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409 if (result.not_null()) { |
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410 #ifdef ASSERT |
9082 | 411 ResourceMark rm(THREAD); |
412 | |
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413 TempNewSymbol basic_signature = |
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414 MethodHandles::lookup_basic_type_signature(full_signature, CHECK); |
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415 int actual_size_of_params = result->size_of_parameters(); |
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416 int expected_size_of_params = ArgumentSizeComputer(basic_signature).size(); |
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417 // +1 for MethodHandle.this, +1 for trailing MethodType |
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418 if (!MethodHandles::is_signature_polymorphic_static(iid)) expected_size_of_params += 1; |
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419 if (appendix.not_null()) expected_size_of_params += 1; |
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420 if (actual_size_of_params != expected_size_of_params) { |
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421 tty->print_cr("*** basic_signature=%s", basic_signature->as_C_string()); |
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422 tty->print_cr("*** result for %s: ", vmIntrinsics::name_at(iid)); |
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423 result->print(); |
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424 } |
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425 assert(actual_size_of_params == expected_size_of_params, |
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426 err_msg("%d != %d", actual_size_of_params, expected_size_of_params)); |
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427 #endif //ASSERT |
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428 |
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429 assert(appendix_result_or_null != NULL, ""); |
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430 (*appendix_result_or_null) = appendix; |
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431 (*method_type_result) = method_type; |
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432 return; |
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433 } |
710 | 434 } |
435 } | |
436 } | |
437 | |
0 | 438 void LinkResolver::check_method_accessability(KlassHandle ref_klass, |
439 KlassHandle resolved_klass, | |
440 KlassHandle sel_klass, | |
441 methodHandle sel_method, | |
442 TRAPS) { | |
443 | |
444 AccessFlags flags = sel_method->access_flags(); | |
445 | |
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446 // Special case: arrays always override "clone". JVMS 2.15. |
0 | 447 // If the resolved klass is an array class, and the declaring class |
448 // is java.lang.Object and the method is "clone", set the flags | |
449 // to public. | |
450 // | |
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451 // We'll check for the method name first, as that's most likely |
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452 // to be false (so we'll short-circuit out of these tests). |
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453 if (sel_method->name() == vmSymbols::clone_name() && |
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454 sel_klass() == SystemDictionary::Object_klass() && |
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455 resolved_klass->oop_is_array()) { |
0 | 456 // We need to change "protected" to "public". |
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457 assert(flags.is_protected(), "clone not protected?"); |
0 | 458 jint new_flags = flags.as_int(); |
459 new_flags = new_flags & (~JVM_ACC_PROTECTED); | |
460 new_flags = new_flags | JVM_ACC_PUBLIC; | |
461 flags.set_flags(new_flags); | |
462 } | |
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463 // assert(extra_arg_result_or_null != NULL, "must be able to return extra argument"); |
0 | 464 |
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465 if (!Reflection::verify_field_access(ref_klass(), |
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466 resolved_klass(), |
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467 sel_klass(), |
0 | 468 flags, |
469 true)) { | |
470 ResourceMark rm(THREAD); | |
471 Exceptions::fthrow( | |
472 THREAD_AND_LOCATION, | |
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473 vmSymbols::java_lang_IllegalAccessError(), |
0 | 474 "tried to access method %s.%s%s from class %s", |
475 sel_klass->external_name(), | |
476 sel_method->name()->as_C_string(), | |
477 sel_method->signature()->as_C_string(), | |
478 ref_klass->external_name() | |
479 ); | |
480 return; | |
481 } | |
482 } | |
483 | |
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484 void LinkResolver::resolve_method_statically(methodHandle& resolved_method, KlassHandle& resolved_klass, |
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485 Bytecodes::Code code, constantPoolHandle pool, int index, TRAPS) { |
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486 // This method is used only |
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487 // (1) in C2 from InlineTree::ok_to_inline (via ciMethod::check_call), |
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488 // and |
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489 // (2) in Bytecode_invoke::static_target |
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490 // It appears to fail when applied to an invokeinterface call site. |
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491 // FIXME: Remove this method and ciMethod::check_call; refactor to use the other LinkResolver entry points. |
0 | 492 // resolve klass |
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493 if (code == Bytecodes::_invokedynamic) { |
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494 resolved_klass = SystemDictionary::MethodHandle_klass(); |
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495 Symbol* method_name = vmSymbols::invoke_name(); |
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496 Symbol* method_signature = pool->signature_ref_at(index); |
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497 KlassHandle current_klass(THREAD, pool->pool_holder()); |
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498 resolve_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, true, false, CHECK); |
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499 return; |
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500 } |
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501 |
0 | 502 resolve_klass(resolved_klass, pool, index, CHECK); |
503 | |
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504 Symbol* method_name = pool->name_ref_at(index); |
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505 Symbol* method_signature = pool->signature_ref_at(index); |
0 | 506 KlassHandle current_klass(THREAD, pool->pool_holder()); |
507 | |
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508 if (pool->has_preresolution() |
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509 || (resolved_klass() == SystemDictionary::MethodHandle_klass() && |
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510 MethodHandles::is_signature_polymorphic_name(resolved_klass(), method_name))) { |
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511 Method* result_oop = ConstantPool::method_at_if_loaded(pool, index); |
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512 if (result_oop != NULL) { |
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513 resolved_method = methodHandle(THREAD, result_oop); |
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514 return; |
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515 } |
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516 } |
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517 |
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518 if (code == Bytecodes::_invokeinterface) { |
13413 | 519 resolve_interface_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, true, true, CHECK); |
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520 } else if (code == Bytecodes::_invokevirtual) { |
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521 resolve_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, true, true, CHECK); |
13413 | 522 } else if (!resolved_klass->is_interface()) { |
523 resolve_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, true, false, CHECK); | |
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524 } else { |
13413 | 525 bool nostatics = (code == Bytecodes::_invokestatic) ? false : true; |
526 resolve_interface_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, true, nostatics, CHECK); | |
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527 } |
0 | 528 } |
529 | |
530 void LinkResolver::resolve_method(methodHandle& resolved_method, KlassHandle resolved_klass, | |
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531 Symbol* method_name, Symbol* method_signature, |
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532 KlassHandle current_klass, bool check_access, |
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533 bool require_methodref, TRAPS) { |
0 | 534 |
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535 Handle nested_exception; |
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536 |
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537 // 1. check if methodref required, that resolved_klass is not interfacemethodref |
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538 if (require_methodref && resolved_klass->is_interface()) { |
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539 ResourceMark rm(THREAD); |
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540 char buf[200]; |
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541 jio_snprintf(buf, sizeof(buf), "Found interface %s, but class was expected", |
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542 resolved_klass()->external_name()); |
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543 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); |
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544 } |
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545 |
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546 // 2. lookup method in resolved klass and its super klasses |
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547 lookup_method_in_klasses(resolved_method, resolved_klass, method_name, method_signature, true, false, CHECK); |
0 | 548 |
549 if (resolved_method.is_null()) { // not found in the class hierarchy | |
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550 // 3. lookup method in all the interfaces implemented by the resolved klass |
0 | 551 lookup_method_in_interfaces(resolved_method, resolved_klass, method_name, method_signature, CHECK); |
552 | |
553 if (resolved_method.is_null()) { | |
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554 // JSR 292: see if this is an implicitly generated method MethodHandle.linkToVirtual(*...), etc |
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555 lookup_polymorphic_method(resolved_method, resolved_klass, method_name, method_signature, |
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556 current_klass, (Handle*)NULL, (Handle*)NULL, THREAD); |
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557 if (HAS_PENDING_EXCEPTION) { |
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558 nested_exception = Handle(THREAD, PENDING_EXCEPTION); |
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559 CLEAR_PENDING_EXCEPTION; |
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560 } |
710 | 561 } |
562 | |
563 if (resolved_method.is_null()) { | |
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564 // 4. method lookup failed |
0 | 565 ResourceMark rm(THREAD); |
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566 THROW_MSG_CAUSE(vmSymbols::java_lang_NoSuchMethodError(), |
6983 | 567 Method::name_and_sig_as_C_string(resolved_klass(), |
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568 method_name, |
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569 method_signature), |
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570 nested_exception); |
0 | 571 } |
572 } | |
573 | |
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574 // 5. access checks, access checking may be turned off when calling from within the VM. |
0 | 575 if (check_access) { |
576 assert(current_klass.not_null() , "current_klass should not be null"); | |
577 | |
578 // check if method can be accessed by the referring class | |
579 check_method_accessability(current_klass, | |
580 resolved_klass, | |
581 KlassHandle(THREAD, resolved_method->method_holder()), | |
582 resolved_method, | |
583 CHECK); | |
584 | |
585 // check loader constraints | |
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586 Handle loader (THREAD, InstanceKlass::cast(current_klass())->class_loader()); |
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587 Handle class_loader (THREAD, resolved_method->method_holder()->class_loader()); |
0 | 588 { |
589 ResourceMark rm(THREAD); | |
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590 Symbol* failed_type_symbol = |
0 | 591 SystemDictionary::check_signature_loaders(method_signature, loader, |
592 class_loader, true, CHECK); | |
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593 if (failed_type_symbol != NULL) { |
0 | 594 const char* msg = "loader constraint violation: when resolving method" |
595 " \"%s\" the class loader (instance of %s) of the current class, %s," | |
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596 " and the class loader (instance of %s) for the method's defining class, %s, have" |
0 | 597 " different Class objects for the type %s used in the signature"; |
6983 | 598 char* sig = Method::name_and_sig_as_C_string(resolved_klass(),method_name,method_signature); |
0 | 599 const char* loader1 = SystemDictionary::loader_name(loader()); |
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600 char* current = InstanceKlass::cast(current_klass())->name()->as_C_string(); |
0 | 601 const char* loader2 = SystemDictionary::loader_name(class_loader()); |
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602 char* target = InstanceKlass::cast(resolved_method->method_holder()) |
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603 ->name()->as_C_string(); |
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604 char* failed_type_name = failed_type_symbol->as_C_string(); |
0 | 605 size_t buflen = strlen(msg) + strlen(sig) + strlen(loader1) + |
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606 strlen(current) + strlen(loader2) + strlen(target) + |
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607 strlen(failed_type_name) + 1; |
0 | 608 char* buf = NEW_RESOURCE_ARRAY_IN_THREAD(THREAD, char, buflen); |
609 jio_snprintf(buf, buflen, msg, sig, loader1, current, loader2, | |
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610 target, failed_type_name); |
0 | 611 THROW_MSG(vmSymbols::java_lang_LinkageError(), buf); |
612 } | |
613 } | |
614 } | |
615 } | |
616 | |
617 void LinkResolver::resolve_interface_method(methodHandle& resolved_method, | |
618 KlassHandle resolved_klass, | |
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619 Symbol* method_name, |
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620 Symbol* method_signature, |
0 | 621 KlassHandle current_klass, |
13413 | 622 bool check_access, |
623 bool nostatics, TRAPS) { | |
0 | 624 |
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625 // check if klass is interface |
0 | 626 if (!resolved_klass->is_interface()) { |
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627 ResourceMark rm(THREAD); |
0 | 628 char buf[200]; |
6983 | 629 jio_snprintf(buf, sizeof(buf), "Found class %s, but interface was expected", resolved_klass()->external_name()); |
0 | 630 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); |
631 } | |
632 | |
633 // lookup method in this interface or its super, java.lang.Object | |
13413 | 634 // JDK8: also look for static methods |
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635 lookup_method_in_klasses(resolved_method, resolved_klass, method_name, method_signature, false, true, CHECK); |
0 | 636 |
637 if (resolved_method.is_null()) { | |
638 // lookup method in all the super-interfaces | |
639 lookup_method_in_interfaces(resolved_method, resolved_klass, method_name, method_signature, CHECK); | |
640 if (resolved_method.is_null()) { | |
641 // no method found | |
642 ResourceMark rm(THREAD); | |
643 THROW_MSG(vmSymbols::java_lang_NoSuchMethodError(), | |
6983 | 644 Method::name_and_sig_as_C_string(resolved_klass(), |
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645 method_name, |
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646 method_signature)); |
0 | 647 } |
648 } | |
649 | |
650 if (check_access) { | |
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651 // JDK8 adds non-public interface methods, and accessability check requirement |
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652 assert(current_klass.not_null() , "current_klass should not be null"); |
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653 |
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654 // check if method can be accessed by the referring class |
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655 check_method_accessability(current_klass, |
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656 resolved_klass, |
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657 KlassHandle(THREAD, resolved_method->method_holder()), |
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658 resolved_method, |
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659 CHECK); |
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660 |
0 | 661 HandleMark hm(THREAD); |
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662 Handle loader (THREAD, InstanceKlass::cast(current_klass())->class_loader()); |
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663 Handle class_loader (THREAD, resolved_method->method_holder()->class_loader()); |
0 | 664 { |
665 ResourceMark rm(THREAD); | |
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666 Symbol* failed_type_symbol = |
0 | 667 SystemDictionary::check_signature_loaders(method_signature, loader, |
668 class_loader, true, CHECK); | |
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669 if (failed_type_symbol != NULL) { |
0 | 670 const char* msg = "loader constraint violation: when resolving " |
671 "interface method \"%s\" the class loader (instance of %s) of the " | |
672 "current class, %s, and the class loader (instance of %s) for " | |
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673 "the method's defining class, %s, have different Class objects for the type %s " |
0 | 674 "used in the signature"; |
6983 | 675 char* sig = Method::name_and_sig_as_C_string(resolved_klass(),method_name,method_signature); |
0 | 676 const char* loader1 = SystemDictionary::loader_name(loader()); |
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677 char* current = InstanceKlass::cast(current_klass())->name()->as_C_string(); |
0 | 678 const char* loader2 = SystemDictionary::loader_name(class_loader()); |
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679 char* target = InstanceKlass::cast(resolved_method->method_holder()) |
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680 ->name()->as_C_string(); |
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681 char* failed_type_name = failed_type_symbol->as_C_string(); |
0 | 682 size_t buflen = strlen(msg) + strlen(sig) + strlen(loader1) + |
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683 strlen(current) + strlen(loader2) + strlen(target) + |
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684 strlen(failed_type_name) + 1; |
0 | 685 char* buf = NEW_RESOURCE_ARRAY_IN_THREAD(THREAD, char, buflen); |
686 jio_snprintf(buf, buflen, msg, sig, loader1, current, loader2, | |
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687 target, failed_type_name); |
0 | 688 THROW_MSG(vmSymbols::java_lang_LinkageError(), buf); |
689 } | |
690 } | |
691 } | |
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692 |
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693 if (nostatics && resolved_method->is_static()) { |
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694 ResourceMark rm(THREAD); |
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695 char buf[200]; |
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696 jio_snprintf(buf, sizeof(buf), "Expected instance not static method %s", |
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697 Method::name_and_sig_as_C_string(resolved_klass(), |
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698 resolved_method->name(), resolved_method->signature())); |
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699 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); |
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700 } |
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701 |
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702 if (TraceItables && Verbose) { |
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703 ResourceMark rm(THREAD); |
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704 tty->print("invokeinterface resolved method: caller-class:%s, compile-time-class:%s, method:%s, method_holder:%s, access_flags: ", |
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705 (current_klass.is_null() ? "<NULL>" : current_klass->internal_name()), |
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706 (resolved_klass.is_null() ? "<NULL>" : resolved_klass->internal_name()), |
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707 Method::name_and_sig_as_C_string(resolved_klass(), |
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708 resolved_method->name(), |
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709 resolved_method->signature()), |
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710 resolved_method->method_holder()->internal_name() |
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711 ); |
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712 resolved_method->access_flags().print_on(tty); |
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713 if (resolved_method->is_default_method()) { |
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714 tty->print("default "); |
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715 } |
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716 if (resolved_method->is_overpass()) { |
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717 tty->print("overpass"); |
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718 } |
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719 tty->cr(); |
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720 } |
0 | 721 } |
722 | |
723 //------------------------------------------------------------------------------------------------------------------------ | |
724 // Field resolution | |
725 | |
726 void LinkResolver::check_field_accessability(KlassHandle ref_klass, | |
727 KlassHandle resolved_klass, | |
728 KlassHandle sel_klass, | |
729 fieldDescriptor& fd, | |
730 TRAPS) { | |
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731 if (!Reflection::verify_field_access(ref_klass(), |
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732 resolved_klass(), |
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733 sel_klass(), |
0 | 734 fd.access_flags(), |
735 true)) { | |
736 ResourceMark rm(THREAD); | |
737 Exceptions::fthrow( | |
738 THREAD_AND_LOCATION, | |
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739 vmSymbols::java_lang_IllegalAccessError(), |
0 | 740 "tried to access field %s.%s from class %s", |
741 sel_klass->external_name(), | |
742 fd.name()->as_C_string(), | |
743 ref_klass->external_name() | |
744 ); | |
745 return; | |
746 } | |
747 } | |
748 | |
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749 void LinkResolver::resolve_field_access(fieldDescriptor& result, constantPoolHandle pool, int index, Bytecodes::Code byte, TRAPS) { |
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750 // Load these early in case the resolve of the containing klass fails |
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751 Symbol* field = pool->name_ref_at(index); |
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752 Symbol* sig = pool->signature_ref_at(index); |
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753 |
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754 // resolve specified klass |
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755 KlassHandle resolved_klass; |
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756 resolve_klass(resolved_klass, pool, index, CHECK); |
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757 |
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758 KlassHandle current_klass(THREAD, pool->pool_holder()); |
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759 resolve_field(result, resolved_klass, field, sig, current_klass, byte, true, true, CHECK); |
0 | 760 } |
761 | |
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762 void LinkResolver::resolve_field(fieldDescriptor& fd, KlassHandle resolved_klass, Symbol* field, Symbol* sig, |
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763 KlassHandle current_klass, Bytecodes::Code byte, bool check_access, bool initialize_class, |
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764 TRAPS) { |
0 | 765 assert(byte == Bytecodes::_getstatic || byte == Bytecodes::_putstatic || |
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766 byte == Bytecodes::_getfield || byte == Bytecodes::_putfield || |
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767 (byte == Bytecodes::_nop && !check_access), "bad field access bytecode"); |
0 | 768 |
769 bool is_static = (byte == Bytecodes::_getstatic || byte == Bytecodes::_putstatic); | |
770 bool is_put = (byte == Bytecodes::_putfield || byte == Bytecodes::_putstatic); | |
771 | |
772 // Check if there's a resolved klass containing the field | |
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773 if (resolved_klass.is_null()) { |
0 | 774 ResourceMark rm(THREAD); |
775 THROW_MSG(vmSymbols::java_lang_NoSuchFieldError(), field->as_C_string()); | |
776 } | |
777 | |
778 // Resolve instance field | |
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779 KlassHandle sel_klass(THREAD, InstanceKlass::cast(resolved_klass())->find_field(field, sig, &fd)); |
0 | 780 // check if field exists; i.e., if a klass containing the field def has been selected |
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781 if (sel_klass.is_null()) { |
0 | 782 ResourceMark rm(THREAD); |
783 THROW_MSG(vmSymbols::java_lang_NoSuchFieldError(), field->as_C_string()); | |
784 } | |
785 | |
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786 if (!check_access) |
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787 // Access checking may be turned off when calling from within the VM. |
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788 return; |
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789 |
0 | 790 // check access |
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791 check_field_accessability(current_klass, resolved_klass, sel_klass, fd, CHECK); |
0 | 792 |
793 // check for errors | |
794 if (is_static != fd.is_static()) { | |
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795 ResourceMark rm(THREAD); |
0 | 796 char msg[200]; |
6983 | 797 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 | 798 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), msg); |
799 } | |
800 | |
801 // Final fields can only be accessed from its own class. | |
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802 if (is_put && fd.access_flags().is_final() && sel_klass() != current_klass()) { |
0 | 803 THROW(vmSymbols::java_lang_IllegalAccessError()); |
804 } | |
805 | |
806 // initialize resolved_klass if necessary | |
807 // note 1: the klass which declared the field must be initialized (i.e, sel_klass) | |
808 // according to the newest JVM spec (5.5, p.170) - was bug (gri 7/28/99) | |
809 // | |
810 // note 2: we don't want to force initialization if we are just checking | |
811 // if the field access is legal; e.g., during compilation | |
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812 if (is_static && initialize_class) { |
0 | 813 sel_klass->initialize(CHECK); |
814 } | |
815 | |
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816 if (sel_klass() != current_klass()) { |
0 | 817 HandleMark hm(THREAD); |
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818 Handle ref_loader (THREAD, InstanceKlass::cast(current_klass())->class_loader()); |
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819 Handle sel_loader (THREAD, InstanceKlass::cast(sel_klass())->class_loader()); |
0 | 820 { |
821 ResourceMark rm(THREAD); | |
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822 Symbol* failed_type_symbol = |
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823 SystemDictionary::check_signature_loaders(sig, |
0 | 824 ref_loader, sel_loader, |
825 false, | |
826 CHECK); | |
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827 if (failed_type_symbol != NULL) { |
0 | 828 const char* msg = "loader constraint violation: when resolving field" |
829 " \"%s\" the class loader (instance of %s) of the referring class, " | |
830 "%s, and the class loader (instance of %s) for the field's resolved " | |
831 "type, %s, have different Class objects for that type"; | |
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832 char* field_name = field->as_C_string(); |
0 | 833 const char* loader1 = SystemDictionary::loader_name(ref_loader()); |
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834 char* sel = InstanceKlass::cast(sel_klass())->name()->as_C_string(); |
0 | 835 const char* loader2 = SystemDictionary::loader_name(sel_loader()); |
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836 char* failed_type_name = failed_type_symbol->as_C_string(); |
0 | 837 size_t buflen = strlen(msg) + strlen(field_name) + strlen(loader1) + |
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838 strlen(sel) + strlen(loader2) + strlen(failed_type_name) + 1; |
0 | 839 char* buf = NEW_RESOURCE_ARRAY_IN_THREAD(THREAD, char, buflen); |
840 jio_snprintf(buf, buflen, msg, field_name, loader1, sel, loader2, | |
841 failed_type_name); | |
842 THROW_MSG(vmSymbols::java_lang_LinkageError(), buf); | |
843 } | |
844 } | |
845 } | |
846 | |
847 // return information. note that the klass is set to the actual klass containing the | |
848 // field, otherwise access of static fields in superclasses will not work. | |
849 } | |
850 | |
851 | |
852 //------------------------------------------------------------------------------------------------------------------------ | |
853 // Invoke resolution | |
854 // | |
855 // Naming conventions: | |
856 // | |
857 // resolved_method the specified method (i.e., static receiver specified via constant pool index) | |
858 // sel_method the selected method (selected via run-time lookup; e.g., based on dynamic receiver class) | |
859 // resolved_klass the specified klass (i.e., specified via constant pool index) | |
860 // recv_klass the receiver klass | |
861 | |
862 | |
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863 void LinkResolver::resolve_static_call(CallInfo& result, KlassHandle& resolved_klass, Symbol* method_name, |
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864 Symbol* method_signature, KlassHandle current_klass, |
0 | 865 bool check_access, bool initialize_class, TRAPS) { |
866 methodHandle resolved_method; | |
867 linktime_resolve_static_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK); | |
6983 | 868 resolved_klass = KlassHandle(THREAD, resolved_method->method_holder()); |
0 | 869 |
870 // Initialize klass (this should only happen if everything is ok) | |
871 if (initialize_class && resolved_klass->should_be_initialized()) { | |
872 resolved_klass->initialize(CHECK); | |
873 linktime_resolve_static_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK); | |
874 } | |
875 | |
876 // setup result | |
877 result.set_static(resolved_klass, resolved_method, CHECK); | |
878 } | |
879 | |
880 // throws linktime exceptions | |
881 void LinkResolver::linktime_resolve_static_method(methodHandle& resolved_method, KlassHandle resolved_klass, | |
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882 Symbol* method_name, Symbol* method_signature, |
0 | 883 KlassHandle current_klass, bool check_access, TRAPS) { |
884 | |
13413 | 885 if (!resolved_klass->is_interface()) { |
886 resolve_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, false, CHECK); | |
887 } else { | |
888 resolve_interface_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, false, CHECK); | |
889 } | |
0 | 890 assert(resolved_method->name() != vmSymbols::class_initializer_name(), "should have been checked in verifier"); |
891 | |
892 // check if static | |
893 if (!resolved_method->is_static()) { | |
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894 ResourceMark rm(THREAD); |
0 | 895 char buf[200]; |
6983 | 896 jio_snprintf(buf, sizeof(buf), "Expected static method %s", Method::name_and_sig_as_C_string(resolved_klass(), |
0 | 897 resolved_method->name(), |
898 resolved_method->signature())); | |
899 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); | |
900 } | |
901 } | |
902 | |
903 | |
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904 void LinkResolver::resolve_special_call(CallInfo& result, KlassHandle resolved_klass, Symbol* method_name, |
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905 Symbol* method_signature, KlassHandle current_klass, bool check_access, TRAPS) { |
0 | 906 methodHandle resolved_method; |
907 linktime_resolve_special_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK); | |
908 runtime_resolve_special_method(result, resolved_method, resolved_klass, current_klass, check_access, CHECK); | |
909 } | |
910 | |
911 // throws linktime exceptions | |
912 void LinkResolver::linktime_resolve_special_method(methodHandle& resolved_method, KlassHandle resolved_klass, | |
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913 Symbol* method_name, Symbol* method_signature, |
0 | 914 KlassHandle current_klass, bool check_access, TRAPS) { |
915 | |
12318
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916 // Invokespecial is called for multiple special reasons: |
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917 // <init> |
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918 // local private method invocation, for classes and interfaces |
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919 // superclass.method, which can also resolve to a default method |
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920 // and the selected method is recalculated relative to the direct superclass |
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921 // superinterface.method, which explicitly does not check shadowing |
6934 | 922 |
13413 | 923 if (!resolved_klass->is_interface()) { |
924 resolve_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, false, CHECK); | |
925 } else { | |
926 resolve_interface_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, true, CHECK); | |
927 } | |
0 | 928 |
929 // check if method name is <init>, that it is found in same klass as static type | |
930 if (resolved_method->name() == vmSymbols::object_initializer_name() && | |
931 resolved_method->method_holder() != resolved_klass()) { | |
932 ResourceMark rm(THREAD); | |
933 Exceptions::fthrow( | |
934 THREAD_AND_LOCATION, | |
2177
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935 vmSymbols::java_lang_NoSuchMethodError(), |
0 | 936 "%s: method %s%s not found", |
937 resolved_klass->external_name(), | |
938 resolved_method->name()->as_C_string(), | |
939 resolved_method->signature()->as_C_string() | |
940 ); | |
941 return; | |
942 } | |
943 | |
13401
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944 // check if invokespecial's interface method reference is in an indirect superinterface |
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945 if (!current_klass.is_null() && resolved_klass->is_interface()) { |
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946 Klass *klass_to_check = !InstanceKlass::cast(current_klass())->is_anonymous() ? |
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947 current_klass() : |
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948 InstanceKlass::cast(current_klass())->host_klass(); |
13433
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949 // As of the fix for 4486457 we disable verification for all of the |
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950 // dynamically-generated bytecodes associated with the 1.4 |
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951 // reflection implementation, not just those associated with |
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952 // sun/reflect/SerializationConstructorAccessor. |
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953 bool is_reflect = JDK_Version::is_gte_jdk14x_version() && |
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954 UseNewReflection && |
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955 klass_to_check->is_subclass_of( |
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956 SystemDictionary::reflect_MagicAccessorImpl_klass()); |
13401
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957 |
13433
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958 if (!is_reflect && |
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959 !InstanceKlass::cast(klass_to_check)->is_same_or_direct_interface(resolved_klass())) { |
13401
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960 ResourceMark rm(THREAD); |
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961 char buf[200]; |
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962 jio_snprintf(buf, sizeof(buf), |
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963 "Interface method reference: %s, is in an indirect superinterface of %s", |
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964 Method::name_and_sig_as_C_string(resolved_klass(), |
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965 resolved_method->name(), |
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966 resolved_method->signature()), |
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967 current_klass->external_name()); |
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968 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); |
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969 } |
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970 } |
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971 |
0 | 972 // check if not static |
973 if (resolved_method->is_static()) { | |
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974 ResourceMark rm(THREAD); |
0 | 975 char buf[200]; |
976 jio_snprintf(buf, sizeof(buf), | |
977 "Expecting non-static method %s", | |
6983 | 978 Method::name_and_sig_as_C_string(resolved_klass(), |
0 | 979 resolved_method->name(), |
980 resolved_method->signature())); | |
981 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); | |
982 } | |
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983 |
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984 if (TraceItables && Verbose) { |
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985 ResourceMark rm(THREAD); |
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986 tty->print("invokespecial resolved method: caller-class:%s, compile-time-class:%s, method:%s, method_holder:%s, access_flags: ", |
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987 (current_klass.is_null() ? "<NULL>" : current_klass->internal_name()), |
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988 (resolved_klass.is_null() ? "<NULL>" : resolved_klass->internal_name()), |
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989 Method::name_and_sig_as_C_string(resolved_klass(), |
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990 resolved_method->name(), |
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991 resolved_method->signature()), |
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992 resolved_method->method_holder()->internal_name() |
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993 ); |
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994 resolved_method->access_flags().print_on(tty); |
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995 if (resolved_method->is_default_method()) { |
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996 tty->print("default "); |
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997 } |
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998 if (resolved_method->is_overpass()) { |
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999 tty->print("overpass"); |
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1000 } |
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1001 tty->cr(); |
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1002 } |
0 | 1003 } |
1004 | |
1005 // throws runtime exceptions | |
1006 void LinkResolver::runtime_resolve_special_method(CallInfo& result, methodHandle resolved_method, KlassHandle resolved_klass, | |
1007 KlassHandle current_klass, bool check_access, TRAPS) { | |
1008 | |
1009 // resolved method is selected method unless we have an old-style lookup | |
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1010 // for a superclass method |
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1011 // Invokespecial for a superinterface, resolved method is selected method, |
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1012 // no checks for shadowing |
0 | 1013 methodHandle sel_method(THREAD, resolved_method()); |
1014 | |
1015 // check if this is an old-style super call and do a new lookup if so | |
1016 { KlassHandle method_klass = KlassHandle(THREAD, | |
1017 resolved_method->method_holder()); | |
1018 | |
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1019 if (check_access && |
0 | 1020 // a) check if ACC_SUPER flag is set for the current class |
8702 | 1021 (current_klass->is_super() || !AllowNonVirtualCalls) && |
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1022 // b) check if the class of the resolved_klass is a superclass |
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1023 // (not supertype in order to exclude interface classes) of the current class. |
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1024 // This check is not performed for super.invoke for interface methods |
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1025 // in super interfaces. |
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1026 current_klass->is_subclass_of(resolved_klass()) && |
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1027 current_klass() != resolved_klass() && |
0 | 1028 // c) check if the method is not <init> |
1029 resolved_method->name() != vmSymbols::object_initializer_name()) { | |
1030 // Lookup super method | |
1031 KlassHandle super_klass(THREAD, current_klass->super()); | |
1032 lookup_instance_method_in_klasses(sel_method, super_klass, | |
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1033 resolved_method->name(), |
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1034 resolved_method->signature(), CHECK); |
0 | 1035 // check if found |
1036 if (sel_method.is_null()) { | |
1037 ResourceMark rm(THREAD); | |
1038 THROW_MSG(vmSymbols::java_lang_AbstractMethodError(), | |
6983 | 1039 Method::name_and_sig_as_C_string(resolved_klass(), |
0 | 1040 resolved_method->name(), |
1041 resolved_method->signature())); | |
1042 } | |
1043 } | |
1044 } | |
1045 | |
1046 // check if not static | |
1047 if (sel_method->is_static()) { | |
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1048 ResourceMark rm(THREAD); |
0 | 1049 char buf[200]; |
6983 | 1050 jio_snprintf(buf, sizeof(buf), "Expecting non-static method %s", Method::name_and_sig_as_C_string(resolved_klass(), |
0 | 1051 resolved_method->name(), |
1052 resolved_method->signature())); | |
1053 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); | |
1054 } | |
1055 | |
1056 // check if abstract | |
1057 if (sel_method->is_abstract()) { | |
1058 ResourceMark rm(THREAD); | |
1059 THROW_MSG(vmSymbols::java_lang_AbstractMethodError(), | |
6983 | 1060 Method::name_and_sig_as_C_string(resolved_klass(), |
0 | 1061 sel_method->name(), |
1062 sel_method->signature())); | |
1063 } | |
1064 | |
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1065 if (TraceItables && Verbose) { |
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1066 ResourceMark rm(THREAD); |
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1067 tty->print("invokespecial selected method: resolved-class:%s, method:%s, method_holder:%s, access_flags: ", |
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1068 (resolved_klass.is_null() ? "<NULL>" : resolved_klass->internal_name()), |
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1069 Method::name_and_sig_as_C_string(resolved_klass(), |
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1070 sel_method->name(), |
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1071 sel_method->signature()), |
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1072 sel_method->method_holder()->internal_name() |
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1073 ); |
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1074 sel_method->access_flags().print_on(tty); |
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1075 if (sel_method->is_default_method()) { |
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1076 tty->print("default "); |
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1077 } |
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1078 if (sel_method->is_overpass()) { |
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1079 tty->print("overpass"); |
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1080 } |
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1081 tty->cr(); |
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1082 } |
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1083 |
0 | 1084 // setup result |
1085 result.set_static(resolved_klass, sel_method, CHECK); | |
1086 } | |
1087 | |
1088 void LinkResolver::resolve_virtual_call(CallInfo& result, Handle recv, KlassHandle receiver_klass, KlassHandle resolved_klass, | |
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1089 Symbol* method_name, Symbol* method_signature, KlassHandle current_klass, |
0 | 1090 bool check_access, bool check_null_and_abstract, TRAPS) { |
1091 methodHandle resolved_method; | |
1092 linktime_resolve_virtual_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK); | |
1093 runtime_resolve_virtual_method(result, resolved_method, resolved_klass, recv, receiver_klass, check_null_and_abstract, CHECK); | |
1094 } | |
1095 | |
1096 // throws linktime exceptions | |
1097 void LinkResolver::linktime_resolve_virtual_method(methodHandle &resolved_method, KlassHandle resolved_klass, | |
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1098 Symbol* method_name, Symbol* method_signature, |
0 | 1099 KlassHandle current_klass, bool check_access, TRAPS) { |
1100 // normal method resolution | |
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1101 resolve_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, true, CHECK); |
0 | 1102 |
1103 assert(resolved_method->name() != vmSymbols::object_initializer_name(), "should have been checked in verifier"); | |
1104 assert(resolved_method->name() != vmSymbols::class_initializer_name (), "should have been checked in verifier"); | |
1105 | |
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1106 // check if private interface method |
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1107 if (resolved_klass->is_interface() && resolved_method->is_private()) { |
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1108 ResourceMark rm(THREAD); |
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1109 char buf[200]; |
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1110 jio_snprintf(buf, sizeof(buf), "private interface method requires invokespecial, not invokevirtual: method %s, caller-class:%s", |
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1111 Method::name_and_sig_as_C_string(resolved_klass(), |
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1112 resolved_method->name(), |
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1113 resolved_method->signature()), |
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1114 (current_klass.is_null() ? "<NULL>" : current_klass->internal_name())); |
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1115 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); |
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1116 } |
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1117 |
0 | 1118 // check if not static |
1119 if (resolved_method->is_static()) { | |
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1120 ResourceMark rm(THREAD); |
0 | 1121 char buf[200]; |
6983 | 1122 jio_snprintf(buf, sizeof(buf), "Expecting non-static method %s", Method::name_and_sig_as_C_string(resolved_klass(), |
0 | 1123 resolved_method->name(), |
1124 resolved_method->signature())); | |
1125 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); | |
1126 } | |
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1127 |
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1128 if (PrintVtables && Verbose) { |
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1129 ResourceMark rm(THREAD); |
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1130 tty->print("invokevirtual resolved method: caller-class:%s, compile-time-class:%s, method:%s, method_holder:%s, access_flags: ", |
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1131 (current_klass.is_null() ? "<NULL>" : current_klass->internal_name()), |
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1132 (resolved_klass.is_null() ? "<NULL>" : resolved_klass->internal_name()), |
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1133 Method::name_and_sig_as_C_string(resolved_klass(), |
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1134 resolved_method->name(), |
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1135 resolved_method->signature()), |
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1136 resolved_method->method_holder()->internal_name() |
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1137 ); |
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1138 resolved_method->access_flags().print_on(tty); |
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1139 if (resolved_method->is_default_method()) { |
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1140 tty->print("default "); |
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1141 } |
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1142 if (resolved_method->is_overpass()) { |
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1143 tty->print("overpass"); |
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1144 } |
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1145 tty->cr(); |
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1146 } |
0 | 1147 } |
1148 | |
1149 // throws runtime exceptions | |
1150 void LinkResolver::runtime_resolve_virtual_method(CallInfo& result, | |
1151 methodHandle resolved_method, | |
1152 KlassHandle resolved_klass, | |
1153 Handle recv, | |
1154 KlassHandle recv_klass, | |
1155 bool check_null_and_abstract, | |
1156 TRAPS) { | |
1157 | |
1158 // setup default return values | |
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1159 int vtable_index = Method::invalid_vtable_index; |
0 | 1160 methodHandle selected_method; |
1161 | |
1162 assert(recv.is_null() || recv->is_oop(), "receiver is not an oop"); | |
1163 | |
1164 // runtime method resolution | |
1165 if (check_null_and_abstract && recv.is_null()) { // check if receiver exists | |
1166 THROW(vmSymbols::java_lang_NullPointerException()); | |
1167 } | |
1168 | |
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1169 // Virtual methods cannot be resolved before its klass has been linked, for otherwise the Method*'s |
0 | 1170 // has not been rewritten, and the vtable initialized. Make sure to do this after the nullcheck, since |
1171 // a missing receiver might result in a bogus lookup. | |
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1172 assert(resolved_method->method_holder()->is_linked(), "must be linked"); |
0 | 1173 |
1174 // do lookup based on receiver klass using the vtable index | |
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1175 if (resolved_method->method_holder()->is_interface()) { // miranda method |
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1176 vtable_index = vtable_index_of_interface_method(resolved_klass, |
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1177 resolved_method); |
0 | 1178 assert(vtable_index >= 0 , "we should have valid vtable index at this point"); |
1179 | |
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1180 InstanceKlass* inst = InstanceKlass::cast(recv_klass()); |
0 | 1181 selected_method = methodHandle(THREAD, inst->method_at_vtable(vtable_index)); |
1182 } else { | |
1183 // at this point we are sure that resolved_method is virtual and not | |
1184 // a miranda method; therefore, it must have a valid vtable index. | |
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1185 assert(!resolved_method->has_itable_index(), ""); |
0 | 1186 vtable_index = resolved_method->vtable_index(); |
1187 // We could get a negative vtable_index for final methods, | |
1188 // because as an optimization they are they are never put in the vtable, | |
1189 // unless they override an existing method. | |
1190 // If we do get a negative, it means the resolved method is the the selected | |
1191 // method, and it can never be changed by an override. | |
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1192 if (vtable_index == Method::nonvirtual_vtable_index) { |
0 | 1193 assert(resolved_method->can_be_statically_bound(), "cannot override this method"); |
1194 selected_method = resolved_method; | |
1195 } else { | |
1196 // recv_klass might be an arrayKlassOop but all vtables start at | |
1197 // the same place. The cast is to avoid virtual call and assertion. | |
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1198 InstanceKlass* inst = (InstanceKlass*)recv_klass(); |
0 | 1199 selected_method = methodHandle(THREAD, inst->method_at_vtable(vtable_index)); |
1200 } | |
1201 } | |
1202 | |
1203 // check if method exists | |
1204 if (selected_method.is_null()) { | |
1205 ResourceMark rm(THREAD); | |
1206 THROW_MSG(vmSymbols::java_lang_AbstractMethodError(), | |
6983 | 1207 Method::name_and_sig_as_C_string(resolved_klass(), |
0 | 1208 resolved_method->name(), |
1209 resolved_method->signature())); | |
1210 } | |
1211 | |
1212 // check if abstract | |
1213 if (check_null_and_abstract && selected_method->is_abstract()) { | |
1214 ResourceMark rm(THREAD); | |
1215 THROW_MSG(vmSymbols::java_lang_AbstractMethodError(), | |
6983 | 1216 Method::name_and_sig_as_C_string(resolved_klass(), |
0 | 1217 selected_method->name(), |
1218 selected_method->signature())); | |
1219 } | |
1220 | |
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1221 if (PrintVtables && Verbose) { |
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1222 ResourceMark rm(THREAD); |
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1223 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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1224 (recv_klass.is_null() ? "<NULL>" : recv_klass->internal_name()), |
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1225 (resolved_klass.is_null() ? "<NULL>" : resolved_klass->internal_name()), |
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1226 Method::name_and_sig_as_C_string(resolved_klass(), |
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1227 resolved_method->name(), |
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1228 resolved_method->signature()), |
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1229 selected_method->method_holder()->internal_name(), |
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1230 vtable_index |
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1231 ); |
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1232 selected_method->access_flags().print_on(tty); |
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1233 if (selected_method->is_default_method()) { |
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1234 tty->print("default "); |
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1235 } |
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1236 if (selected_method->is_overpass()) { |
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1237 tty->print("overpass"); |
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1238 } |
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1239 tty->cr(); |
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1240 } |
0 | 1241 // setup result |
1242 result.set_virtual(resolved_klass, recv_klass, resolved_method, selected_method, vtable_index, CHECK); | |
1243 } | |
1244 | |
1245 void LinkResolver::resolve_interface_call(CallInfo& result, Handle recv, KlassHandle recv_klass, KlassHandle resolved_klass, | |
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1246 Symbol* method_name, Symbol* method_signature, KlassHandle current_klass, |
0 | 1247 bool check_access, bool check_null_and_abstract, TRAPS) { |
1248 methodHandle resolved_method; | |
1249 linktime_resolve_interface_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK); | |
1250 runtime_resolve_interface_method(result, resolved_method, resolved_klass, recv, recv_klass, check_null_and_abstract, CHECK); | |
1251 } | |
1252 | |
1253 // throws linktime exceptions | |
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1254 void LinkResolver::linktime_resolve_interface_method(methodHandle& resolved_method, KlassHandle resolved_klass, Symbol* method_name, |
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1255 Symbol* method_signature, KlassHandle current_klass, bool check_access, TRAPS) { |
0 | 1256 // normal interface method resolution |
13413 | 1257 resolve_interface_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, true, CHECK); |
0 | 1258 |
1259 assert(resolved_method->name() != vmSymbols::object_initializer_name(), "should have been checked in verifier"); | |
1260 assert(resolved_method->name() != vmSymbols::class_initializer_name (), "should have been checked in verifier"); | |
1261 } | |
1262 | |
1263 // throws runtime exceptions | |
1264 void LinkResolver::runtime_resolve_interface_method(CallInfo& result, methodHandle resolved_method, KlassHandle resolved_klass, | |
1265 Handle recv, KlassHandle recv_klass, bool check_null_and_abstract, TRAPS) { | |
1266 // check if receiver exists | |
1267 if (check_null_and_abstract && recv.is_null()) { | |
1268 THROW(vmSymbols::java_lang_NullPointerException()); | |
1269 } | |
1270 | |
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1271 // check if private interface method |
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1272 if (resolved_klass->is_interface() && resolved_method->is_private()) { |
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1273 ResourceMark rm(THREAD); |
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1274 char buf[200]; |
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1275 jio_snprintf(buf, sizeof(buf), "private interface method requires invokespecial, not invokeinterface: method %s", |
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1276 Method::name_and_sig_as_C_string(resolved_klass(), |
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1277 resolved_method->name(), |
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1278 resolved_method->signature())); |
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1279 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); |
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1280 } |
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1281 |
0 | 1282 // check if receiver klass implements the resolved interface |
1283 if (!recv_klass->is_subtype_of(resolved_klass())) { | |
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1284 ResourceMark rm(THREAD); |
0 | 1285 char buf[200]; |
1286 jio_snprintf(buf, sizeof(buf), "Class %s does not implement the requested interface %s", | |
6983 | 1287 recv_klass()->external_name(), |
1288 resolved_klass()->external_name()); | |
0 | 1289 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); |
1290 } | |
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|
1291 |
0 | 1292 // do lookup based on receiver klass |
1293 methodHandle sel_method; | |
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|
1294 // This search must match the linktime preparation search for itable initialization |
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1295 // to correctly enforce loader constraints for interface method inheritance |
0 | 1296 lookup_instance_method_in_klasses(sel_method, recv_klass, |
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|
1297 resolved_method->name(), |
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|
1298 resolved_method->signature(), CHECK); |
12264
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1299 if (sel_method.is_null() && !check_null_and_abstract) { |
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1300 // In theory this is a harmless placeholder value, but |
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1301 // in practice leaving in null affects the nsk default method tests. |
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|
1302 // This needs further study. |
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|
1303 sel_method = resolved_method; |
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1304 } |
0 | 1305 // check if method exists |
1306 if (sel_method.is_null()) { | |
1307 ResourceMark rm(THREAD); | |
1308 THROW_MSG(vmSymbols::java_lang_AbstractMethodError(), | |
6983 | 1309 Method::name_and_sig_as_C_string(recv_klass(), |
0 | 1310 resolved_method->name(), |
1311 resolved_method->signature())); | |
1312 } | |
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|
1313 // check access |
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1314 // Throw Illegal Access Error if sel_method is not public. |
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1315 if (!sel_method->is_public()) { |
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1316 ResourceMark rm(THREAD); |
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1317 THROW_MSG(vmSymbols::java_lang_IllegalAccessError(), |
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1318 Method::name_and_sig_as_C_string(recv_klass(), |
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1319 sel_method->name(), |
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1320 sel_method->signature())); |
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1321 } |
0 | 1322 // check if abstract |
1323 if (check_null_and_abstract && sel_method->is_abstract()) { | |
1324 ResourceMark rm(THREAD); | |
1325 THROW_MSG(vmSymbols::java_lang_AbstractMethodError(), | |
6983 | 1326 Method::name_and_sig_as_C_string(recv_klass(), |
0 | 1327 sel_method->name(), |
1328 sel_method->signature())); | |
1329 } | |
12318
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1330 |
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1331 if (TraceItables && Verbose) { |
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|
1332 ResourceMark rm(THREAD); |
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1333 tty->print("invokeinterface selected method: receiver-class:%s, resolved-class:%s, method:%s, method_holder:%s, access_flags: ", |
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1334 (recv_klass.is_null() ? "<NULL>" : recv_klass->internal_name()), |
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1335 (resolved_klass.is_null() ? "<NULL>" : resolved_klass->internal_name()), |
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1336 Method::name_and_sig_as_C_string(resolved_klass(), |
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1337 resolved_method->name(), |
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1338 resolved_method->signature()), |
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1339 sel_method->method_holder()->internal_name() |
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1340 ); |
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|
1341 sel_method->access_flags().print_on(tty); |
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1342 if (sel_method->is_default_method()) { |
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1343 tty->print("default "); |
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1344 } |
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1345 if (sel_method->is_overpass()) { |
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|
1346 tty->print("overpass"); |
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|
1347 } |
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|
1348 tty->cr(); |
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|
1349 } |
13055
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|
1350 // setup result |
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1351 if (!resolved_method->has_itable_index()) { |
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1352 int vtable_index = resolved_method->vtable_index(); |
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1353 assert(vtable_index == sel_method->vtable_index(), "sanity check"); |
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1354 result.set_virtual(resolved_klass, recv_klass, resolved_method, sel_method, vtable_index, CHECK); |
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|
1355 } else { |
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1356 int itable_index = resolved_method()->itable_index(); |
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1357 result.set_interface(resolved_klass, recv_klass, resolved_method, sel_method, itable_index, CHECK); |
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1358 } |
0 | 1359 } |
1360 | |
1361 | |
1362 methodHandle LinkResolver::linktime_resolve_interface_method_or_null( | |
1363 KlassHandle resolved_klass, | |
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1364 Symbol* method_name, |
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1365 Symbol* method_signature, |
0 | 1366 KlassHandle current_klass, |
1367 bool check_access) { | |
1368 EXCEPTION_MARK; | |
1369 methodHandle method_result; | |
1370 linktime_resolve_interface_method(method_result, resolved_klass, method_name, method_signature, current_klass, check_access, THREAD); | |
1371 if (HAS_PENDING_EXCEPTION) { | |
1372 CLEAR_PENDING_EXCEPTION; | |
1373 return methodHandle(); | |
1374 } else { | |
1375 return method_result; | |
1376 } | |
1377 } | |
1378 | |
1379 methodHandle LinkResolver::linktime_resolve_virtual_method_or_null( | |
1380 KlassHandle resolved_klass, | |
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1381 Symbol* method_name, |
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1382 Symbol* method_signature, |
0 | 1383 KlassHandle current_klass, |
1384 bool check_access) { | |
1385 EXCEPTION_MARK; | |
1386 methodHandle method_result; | |
1387 linktime_resolve_virtual_method(method_result, resolved_klass, method_name, method_signature, current_klass, check_access, THREAD); | |
1388 if (HAS_PENDING_EXCEPTION) { | |
1389 CLEAR_PENDING_EXCEPTION; | |
1390 return methodHandle(); | |
1391 } else { | |
1392 return method_result; | |
1393 } | |
1394 } | |
1395 | |
1396 methodHandle LinkResolver::resolve_virtual_call_or_null( | |
1397 KlassHandle receiver_klass, | |
1398 KlassHandle resolved_klass, | |
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1399 Symbol* name, |
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1400 Symbol* signature, |
0 | 1401 KlassHandle current_klass) { |
1402 EXCEPTION_MARK; | |
1403 CallInfo info; | |
1404 resolve_virtual_call(info, Handle(), receiver_klass, resolved_klass, name, signature, current_klass, true, false, THREAD); | |
1405 if (HAS_PENDING_EXCEPTION) { | |
1406 CLEAR_PENDING_EXCEPTION; | |
1407 return methodHandle(); | |
1408 } | |
1409 return info.selected_method(); | |
1410 } | |
1411 | |
1412 methodHandle LinkResolver::resolve_interface_call_or_null( | |
1413 KlassHandle receiver_klass, | |
1414 KlassHandle resolved_klass, | |
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1415 Symbol* name, |
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1416 Symbol* signature, |
0 | 1417 KlassHandle current_klass) { |
1418 EXCEPTION_MARK; | |
1419 CallInfo info; | |
1420 resolve_interface_call(info, Handle(), receiver_klass, resolved_klass, name, signature, current_klass, true, false, THREAD); | |
1421 if (HAS_PENDING_EXCEPTION) { | |
1422 CLEAR_PENDING_EXCEPTION; | |
1423 return methodHandle(); | |
1424 } | |
1425 return info.selected_method(); | |
1426 } | |
1427 | |
1428 int LinkResolver::resolve_virtual_vtable_index( | |
1429 KlassHandle receiver_klass, | |
1430 KlassHandle resolved_klass, | |
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1431 Symbol* name, |
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1432 Symbol* signature, |
0 | 1433 KlassHandle current_klass) { |
1434 EXCEPTION_MARK; | |
1435 CallInfo info; | |
1436 resolve_virtual_call(info, Handle(), receiver_klass, resolved_klass, name, signature, current_klass, true, false, THREAD); | |
1437 if (HAS_PENDING_EXCEPTION) { | |
1438 CLEAR_PENDING_EXCEPTION; | |
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1439 return Method::invalid_vtable_index; |
0 | 1440 } |
1441 return info.vtable_index(); | |
1442 } | |
1443 | |
1444 methodHandle LinkResolver::resolve_static_call_or_null( | |
1445 KlassHandle resolved_klass, | |
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|
1446 Symbol* name, |
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|
1447 Symbol* signature, |
0 | 1448 KlassHandle current_klass) { |
1449 EXCEPTION_MARK; | |
1450 CallInfo info; | |
1451 resolve_static_call(info, resolved_klass, name, signature, current_klass, true, false, THREAD); | |
1452 if (HAS_PENDING_EXCEPTION) { | |
1453 CLEAR_PENDING_EXCEPTION; | |
1454 return methodHandle(); | |
1455 } | |
1456 return info.selected_method(); | |
1457 } | |
1458 | |
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1459 methodHandle LinkResolver::resolve_special_call_or_null(KlassHandle resolved_klass, Symbol* name, Symbol* signature, |
0 | 1460 KlassHandle current_klass) { |
1461 EXCEPTION_MARK; | |
1462 CallInfo info; | |
1463 resolve_special_call(info, resolved_klass, name, signature, current_klass, true, THREAD); | |
1464 if (HAS_PENDING_EXCEPTION) { | |
1465 CLEAR_PENDING_EXCEPTION; | |
1466 return methodHandle(); | |
1467 } | |
1468 return info.selected_method(); | |
1469 } | |
1470 | |
1471 | |
1472 | |
1473 //------------------------------------------------------------------------------------------------------------------------ | |
1474 // ConstantPool entries | |
1475 | |
1476 void LinkResolver::resolve_invoke(CallInfo& result, Handle recv, constantPoolHandle pool, int index, Bytecodes::Code byte, TRAPS) { | |
1477 switch (byte) { | |
1478 case Bytecodes::_invokestatic : resolve_invokestatic (result, pool, index, CHECK); break; | |
1479 case Bytecodes::_invokespecial : resolve_invokespecial (result, pool, index, CHECK); break; | |
1480 case Bytecodes::_invokevirtual : resolve_invokevirtual (result, recv, pool, index, CHECK); break; | |
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1481 case Bytecodes::_invokehandle : resolve_invokehandle (result, pool, index, CHECK); break; |
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1482 case Bytecodes::_invokedynamic : resolve_invokedynamic (result, pool, index, CHECK); break; |
0 | 1483 case Bytecodes::_invokeinterface: resolve_invokeinterface(result, recv, pool, index, CHECK); break; |
1484 } | |
1485 return; | |
1486 } | |
1487 | |
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1488 void LinkResolver::resolve_pool(KlassHandle& resolved_klass, Symbol*& method_name, Symbol*& method_signature, |
0 | 1489 KlassHandle& current_klass, constantPoolHandle pool, int index, TRAPS) { |
1490 // resolve klass | |
1491 resolve_klass(resolved_klass, pool, index, CHECK); | |
1492 | |
1493 // Get name, signature, and static klass | |
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1494 method_name = pool->name_ref_at(index); |
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1495 method_signature = pool->signature_ref_at(index); |
0 | 1496 current_klass = KlassHandle(THREAD, pool->pool_holder()); |
1497 } | |
1498 | |
1499 | |
1500 void LinkResolver::resolve_invokestatic(CallInfo& result, constantPoolHandle pool, int index, TRAPS) { | |
1501 KlassHandle resolved_klass; | |
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1502 Symbol* method_name = NULL; |
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1503 Symbol* method_signature = NULL; |
0 | 1504 KlassHandle current_klass; |
1505 resolve_pool(resolved_klass, method_name, method_signature, current_klass, pool, index, CHECK); | |
1506 resolve_static_call(result, resolved_klass, method_name, method_signature, current_klass, true, true, CHECK); | |
1507 } | |
1508 | |
1509 | |
1510 void LinkResolver::resolve_invokespecial(CallInfo& result, constantPoolHandle pool, int index, TRAPS) { | |
1511 KlassHandle resolved_klass; | |
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1512 Symbol* method_name = NULL; |
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1513 Symbol* method_signature = NULL; |
0 | 1514 KlassHandle current_klass; |
1515 resolve_pool(resolved_klass, method_name, method_signature, current_klass, pool, index, CHECK); | |
1516 resolve_special_call(result, resolved_klass, method_name, method_signature, current_klass, true, CHECK); | |
1517 } | |
1518 | |
1519 | |
1520 void LinkResolver::resolve_invokevirtual(CallInfo& result, Handle recv, | |
1521 constantPoolHandle pool, int index, | |
1522 TRAPS) { | |
1523 | |
1524 KlassHandle resolved_klass; | |
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1525 Symbol* method_name = NULL; |
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1526 Symbol* method_signature = NULL; |
0 | 1527 KlassHandle current_klass; |
1528 resolve_pool(resolved_klass, method_name, method_signature, current_klass, pool, index, CHECK); | |
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1529 KlassHandle recvrKlass (THREAD, recv.is_null() ? (Klass*)NULL : recv->klass()); |
0 | 1530 resolve_virtual_call(result, recv, recvrKlass, resolved_klass, method_name, method_signature, current_klass, true, true, CHECK); |
1531 } | |
1532 | |
1533 | |
1534 void LinkResolver::resolve_invokeinterface(CallInfo& result, Handle recv, constantPoolHandle pool, int index, TRAPS) { | |
1535 KlassHandle resolved_klass; | |
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1536 Symbol* method_name = NULL; |
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1537 Symbol* method_signature = NULL; |
0 | 1538 KlassHandle current_klass; |
1539 resolve_pool(resolved_klass, method_name, method_signature, current_klass, pool, index, CHECK); | |
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1540 KlassHandle recvrKlass (THREAD, recv.is_null() ? (Klass*)NULL : recv->klass()); |
0 | 1541 resolve_interface_call(result, recv, recvrKlass, resolved_klass, method_name, method_signature, current_klass, true, true, CHECK); |
1542 } | |
1543 | |
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1544 |
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1545 void LinkResolver::resolve_invokehandle(CallInfo& result, constantPoolHandle pool, int index, TRAPS) { |
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1546 assert(EnableInvokeDynamic, ""); |
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1547 // This guy is reached from InterpreterRuntime::resolve_invokehandle. |
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1548 KlassHandle resolved_klass; |
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1549 Symbol* method_name = NULL; |
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1550 Symbol* method_signature = NULL; |
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1551 KlassHandle current_klass; |
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1552 resolve_pool(resolved_klass, method_name, method_signature, current_klass, pool, index, CHECK); |
9082 | 1553 if (TraceMethodHandles) { |
1554 ResourceMark rm(THREAD); | |
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1555 tty->print_cr("resolve_invokehandle %s %s", method_name->as_C_string(), method_signature->as_C_string()); |
9082 | 1556 } |
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1557 resolve_handle_call(result, resolved_klass, method_name, method_signature, current_klass, CHECK); |
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1558 } |
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|
1559 |
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|
1560 void LinkResolver::resolve_handle_call(CallInfo& result, KlassHandle resolved_klass, |
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1561 Symbol* method_name, Symbol* method_signature, |
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|
1562 KlassHandle current_klass, |
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|
1563 TRAPS) { |
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|
1564 // JSR 292: this must be an implicitly generated method MethodHandle.invokeExact(*...) or similar |
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1565 assert(resolved_klass() == SystemDictionary::MethodHandle_klass(), ""); |
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1566 assert(MethodHandles::is_signature_polymorphic_name(method_name), ""); |
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1567 methodHandle resolved_method; |
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1568 Handle resolved_appendix; |
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1569 Handle resolved_method_type; |
6266
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1570 lookup_polymorphic_method(resolved_method, resolved_klass, |
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1571 method_name, method_signature, |
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1572 current_klass, &resolved_appendix, &resolved_method_type, CHECK); |
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1573 result.set_handle(resolved_method, resolved_appendix, resolved_method_type, CHECK); |
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1574 } |
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|
1575 |
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|
1576 |
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|
1577 void LinkResolver::resolve_invokedynamic(CallInfo& result, constantPoolHandle pool, int index, TRAPS) { |
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1578 assert(EnableInvokeDynamic, ""); |
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1579 |
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1580 //resolve_pool(<resolved_klass>, method_name, method_signature, current_klass, pool, index, CHECK); |
6266
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1581 Symbol* method_name = pool->name_ref_at(index); |
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1582 Symbol* method_signature = pool->signature_ref_at(index); |
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1583 KlassHandle current_klass = KlassHandle(THREAD, pool->pool_holder()); |
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1584 |
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1585 // Resolve the bootstrap specifier (BSM + optional arguments). |
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1586 Handle bootstrap_specifier; |
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1587 // Check if CallSite has been bound already: |
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1588 ConstantPoolCacheEntry* cpce = pool->invokedynamic_cp_cache_entry_at(index); |
6266
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1589 if (cpce->is_f1_null()) { |
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1590 int pool_index = cpce->constant_pool_index(); |
6266
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1591 oop bsm_info = pool->resolve_bootstrap_specifier_at(pool_index, CHECK); |
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1592 assert(bsm_info != NULL, ""); |
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1593 // FIXME: Cache this once per BootstrapMethods entry, not once per CONSTANT_InvokeDynamic. |
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|
1594 bootstrap_specifier = Handle(THREAD, bsm_info); |
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1595 } |
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1596 if (!cpce->is_f1_null()) { |
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|
1597 methodHandle method( THREAD, cpce->f1_as_method()); |
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1598 Handle appendix( THREAD, cpce->appendix_if_resolved(pool)); |
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1599 Handle method_type(THREAD, cpce->method_type_if_resolved(pool)); |
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1600 result.set_handle(method, appendix, method_type, CHECK); |
6266
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1601 return; |
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|
1602 } |
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1603 |
6266
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1604 if (TraceMethodHandles) { |
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|
1605 ResourceMark rm(THREAD); |
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|
1606 tty->print_cr("resolve_invokedynamic #%d %s %s", |
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1607 ConstantPool::decode_invokedynamic_index(index), |
6266
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1608 method_name->as_C_string(), method_signature->as_C_string()); |
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1609 tty->print(" BSM info: "); bootstrap_specifier->print(); |
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1610 } |
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|
1611 |
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|
1612 resolve_dynamic_call(result, bootstrap_specifier, method_name, method_signature, current_klass, CHECK); |
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|
1613 } |
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|
1614 |
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|
1615 void LinkResolver::resolve_dynamic_call(CallInfo& result, |
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|
1616 Handle bootstrap_specifier, |
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|
1617 Symbol* method_name, Symbol* method_signature, |
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|
1618 KlassHandle current_klass, |
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|
1619 TRAPS) { |
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|
1620 // JSR 292: this must resolve to an implicitly generated method MH.linkToCallSite(*...) |
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|
1621 // The appendix argument is likely to be a freshly-created CallSite. |
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|
1622 Handle resolved_appendix; |
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|
1623 Handle resolved_method_type; |
6266
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|
1624 methodHandle resolved_method = |
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|
1625 SystemDictionary::find_dynamic_call_site_invoker(current_klass, |
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|
1626 bootstrap_specifier, |
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|
1627 method_name, method_signature, |
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|
1628 &resolved_appendix, |
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|
1629 &resolved_method_type, |
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|
1630 THREAD); |
3744
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|
1631 if (HAS_PENDING_EXCEPTION) { |
6266
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|
1632 if (TraceMethodHandles) { |
17937
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|
1633 tty->print_cr("invokedynamic throws BSME for " INTPTR_FORMAT, p2i((void *)PENDING_EXCEPTION)); |
6266
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|
1634 PENDING_EXCEPTION->print(); |
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|
1635 } |
3744
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|
1636 if (PENDING_EXCEPTION->is_a(SystemDictionary::BootstrapMethodError_klass())) { |
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|
1637 // throw these guys, since they are already wrapped |
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|
1638 return; |
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|
1639 } |
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|
1640 if (!PENDING_EXCEPTION->is_a(SystemDictionary::LinkageError_klass())) { |
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|
1641 // intercept only LinkageErrors which might have failed to wrap |
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|
1642 return; |
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|
1643 } |
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|
1644 // See the "Linking Exceptions" section for the invokedynamic instruction in the JVMS. |
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|
1645 Handle nested_exception(THREAD, PENDING_EXCEPTION); |
3744
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|
1646 CLEAR_PENDING_EXCEPTION; |
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|
1647 THROW_CAUSE(vmSymbols::java_lang_BootstrapMethodError(), nested_exception) |
3744
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|
1648 } |
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|
1649 result.set_handle(resolved_method, resolved_appendix, resolved_method_type, CHECK); |
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|
1650 } |
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|
1651 |
0 | 1652 //------------------------------------------------------------------------------------------------------------------------ |
1653 #ifndef PRODUCT | |
1654 | |
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|
1655 void CallInfo::print() { |
0 | 1656 ResourceMark rm; |
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|
1657 const char* kindstr = "unknown"; |
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|
1658 switch (_call_kind) { |
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|
1659 case direct_call: kindstr = "direct"; break; |
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|
1660 case vtable_call: kindstr = "vtable"; break; |
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|
1661 case itable_call: kindstr = "itable"; break; |
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|
1662 } |
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|
1663 tty->print_cr("Call %s@%d %s", kindstr, _call_index, |
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|
1664 _resolved_method.is_null() ? "(none)" : _resolved_method->name_and_sig_as_C_string()); |
0 | 1665 } |
1666 | |
1667 #endif |