Mercurial > hg > truffle
annotate src/share/vm/interpreter/linkResolver.cpp @ 13438:ad72068ac41e
8028993: Full collections with ParallelScavenge slower in JDK 8 compared to 7u40
Summary: Reducing the number of calls to follow_class_loader to speed up the marking phase. Also removed some unnecessary calls to adjust_klass.
Reviewed-by: stefank, jmasa, mgerdin
author | sjohanss |
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date | Tue, 10 Dec 2013 10:31:00 +0100 |
parents | 379f11bc04fc |
children | 769557390c43 |
rev | line source |
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0 | 1 /* |
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2 * Copyright (c) 1997, 2013, Oracle and/or its affiliates. All rights reserved. |
0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
4 * | |
5 * This code is free software; you can redistribute it and/or modify it | |
6 * under the terms of the GNU General Public License version 2 only, as | |
7 * published by the Free Software Foundation. | |
8 * | |
9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
12 * version 2 for more details (a copy is included in the LICENSE file that | |
13 * accompanied this code). | |
14 * | |
15 * You should have received a copy of the GNU General Public License version | |
16 * 2 along with this work; if not, write to the Free Software Foundation, | |
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
18 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
1972 | 25 #include "precompiled.hpp" |
6934 | 26 #include "classfile/defaultMethods.hpp" |
1972 | 27 #include "classfile/systemDictionary.hpp" |
28 #include "classfile/vmSymbols.hpp" | |
29 #include "compiler/compileBroker.hpp" | |
30 #include "gc_interface/collectedHeap.inline.hpp" | |
31 #include "interpreter/bytecode.hpp" | |
32 #include "interpreter/interpreterRuntime.hpp" | |
33 #include "interpreter/linkResolver.hpp" | |
34 #include "memory/resourceArea.hpp" | |
35 #include "memory/universe.inline.hpp" | |
36 #include "oops/instanceKlass.hpp" | |
37 #include "oops/objArrayOop.hpp" | |
38 #include "prims/methodHandles.hpp" | |
39 #include "prims/nativeLookup.hpp" | |
40 #include "runtime/compilationPolicy.hpp" | |
41 #include "runtime/fieldDescriptor.hpp" | |
42 #include "runtime/frame.inline.hpp" | |
43 #include "runtime/handles.inline.hpp" | |
44 #include "runtime/reflection.hpp" | |
45 #include "runtime/signature.hpp" | |
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46 #include "runtime/thread.inline.hpp" |
1972 | 47 #include "runtime/vmThread.hpp" |
0 | 48 |
49 | |
50 //------------------------------------------------------------------------------------------------------------------------ | |
51 // Implementation of CallInfo | |
52 | |
53 | |
54 void CallInfo::set_static(KlassHandle resolved_klass, methodHandle resolved_method, TRAPS) { | |
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55 int vtable_index = Method::nonvirtual_vtable_index; |
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56 set_common(resolved_klass, resolved_klass, resolved_method, resolved_method, CallInfo::direct_call, vtable_index, CHECK); |
0 | 57 } |
58 | |
59 | |
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60 void CallInfo::set_interface(KlassHandle resolved_klass, KlassHandle selected_klass, methodHandle resolved_method, methodHandle selected_method, int itable_index, TRAPS) { |
0 | 61 // This is only called for interface methods. If the resolved_method |
62 // comes from java/lang/Object, it can be the subject of a virtual call, so | |
63 // we should pick the vtable index from the resolved method. | |
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64 // In that case, the caller must call set_virtual instead of set_interface. |
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65 assert(resolved_method->method_holder()->is_interface(), ""); |
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66 assert(itable_index == resolved_method()->itable_index(), ""); |
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67 set_common(resolved_klass, selected_klass, resolved_method, selected_method, CallInfo::itable_call, itable_index, CHECK); |
0 | 68 } |
69 | |
70 void CallInfo::set_virtual(KlassHandle resolved_klass, KlassHandle selected_klass, methodHandle resolved_method, methodHandle selected_method, int vtable_index, TRAPS) { | |
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71 assert(vtable_index >= 0 || vtable_index == Method::nonvirtual_vtable_index, "valid index"); |
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72 assert(vtable_index < 0 || !resolved_method->has_vtable_index() || vtable_index == resolved_method->vtable_index(), ""); |
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73 CallKind kind = (vtable_index >= 0 && !resolved_method->can_be_statically_bound() ? CallInfo::vtable_call : CallInfo::direct_call); |
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74 set_common(resolved_klass, selected_klass, resolved_method, selected_method, kind, vtable_index, CHECK); |
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75 assert(!resolved_method->is_compiled_lambda_form(), "these must be handled via an invokehandle call"); |
0 | 76 } |
77 | |
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78 void CallInfo::set_handle(methodHandle resolved_method, Handle resolved_appendix, Handle resolved_method_type, TRAPS) { |
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79 if (resolved_method.is_null()) { |
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80 THROW_MSG(vmSymbols::java_lang_InternalError(), "resolved method is null"); |
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81 } |
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82 KlassHandle resolved_klass = SystemDictionary::MethodHandle_klass(); |
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83 assert(resolved_method->intrinsic_id() == vmIntrinsics::_invokeBasic || |
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84 resolved_method->is_compiled_lambda_form(), |
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85 "linkMethod must return one of these"); |
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86 int vtable_index = Method::nonvirtual_vtable_index; |
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87 assert(!resolved_method->has_vtable_index(), ""); |
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88 set_common(resolved_klass, resolved_klass, resolved_method, resolved_method, CallInfo::direct_call, vtable_index, CHECK); |
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89 _resolved_appendix = resolved_appendix; |
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90 _resolved_method_type = resolved_method_type; |
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91 } |
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92 |
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93 void CallInfo::set_common(KlassHandle resolved_klass, |
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94 KlassHandle selected_klass, |
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95 methodHandle resolved_method, |
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96 methodHandle selected_method, |
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97 CallKind kind, |
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98 int index, |
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99 TRAPS) { |
0 | 100 assert(resolved_method->signature() == selected_method->signature(), "signatures must correspond"); |
101 _resolved_klass = resolved_klass; | |
102 _selected_klass = selected_klass; | |
103 _resolved_method = resolved_method; | |
104 _selected_method = selected_method; | |
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105 _call_kind = kind; |
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106 _call_index = index; |
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107 _resolved_appendix = Handle(); |
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108 DEBUG_ONLY(verify()); // verify before making side effects |
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109 |
1783 | 110 if (CompilationPolicy::must_be_compiled(selected_method)) { |
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111 // This path is unusual, mostly used by the '-Xcomp' stress test mode. |
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112 |
1783 | 113 // Note: with several active threads, the must_be_compiled may be true |
114 // while can_be_compiled is false; remove assert | |
115 // assert(CompilationPolicy::can_be_compiled(selected_method), "cannot compile"); | |
0 | 116 if (THREAD->is_Compiler_thread()) { |
117 // don't force compilation, resolve was on behalf of compiler | |
118 return; | |
119 } | |
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120 if (selected_method->method_holder()->is_not_initialized()) { |
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121 // 'is_not_initialized' means not only '!is_initialized', but also that |
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122 // initialization has not been started yet ('!being_initialized') |
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123 // Do not force compilation of methods in uninitialized classes. |
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124 // Note that doing this would throw an assert later, |
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125 // in CompileBroker::compile_method. |
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126 // We sometimes use the link resolver to do reflective lookups |
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127 // even before classes are initialized. |
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128 return; |
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129 } |
0 | 130 CompileBroker::compile_method(selected_method, InvocationEntryBci, |
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131 CompilationPolicy::policy()->initial_compile_level(), |
1783 | 132 methodHandle(), 0, "must_be_compiled", CHECK); |
0 | 133 } |
134 } | |
135 | |
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136 // utility query for unreflecting a method |
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137 CallInfo::CallInfo(Method* resolved_method, Klass* resolved_klass) { |
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138 Klass* resolved_method_holder = resolved_method->method_holder(); |
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139 if (resolved_klass == NULL) { // 2nd argument defaults to holder of 1st |
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140 resolved_klass = resolved_method_holder; |
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141 } |
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142 _resolved_klass = resolved_klass; |
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143 _selected_klass = resolved_klass; |
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144 _resolved_method = resolved_method; |
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145 _selected_method = resolved_method; |
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146 // classify: |
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147 CallKind kind = CallInfo::unknown_kind; |
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148 int index = resolved_method->vtable_index(); |
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149 if (resolved_method->can_be_statically_bound()) { |
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150 kind = CallInfo::direct_call; |
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151 } else if (!resolved_method_holder->is_interface()) { |
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152 // Could be an Object method inherited into an interface, but still a vtable call. |
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153 kind = CallInfo::vtable_call; |
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154 } else if (!resolved_klass->is_interface()) { |
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155 // A 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 |
13413 | 245 void LinkResolver::lookup_method_in_klasses(methodHandle& result, KlassHandle klass, Symbol* name, Symbol* signature, bool checkpolymorphism, TRAPS) { |
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246 Method* result_oop = klass->uncached_lookup_method(name, signature); |
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247 if (result_oop == NULL) { |
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248 Array<Method*>* default_methods = InstanceKlass::cast(klass())->default_methods(); |
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249 if (default_methods != NULL) { |
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250 result_oop = InstanceKlass::find_method(default_methods, name, signature); |
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251 } |
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252 } |
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253 |
13413 | 254 if (checkpolymorphism && EnableInvokeDynamic && result_oop != NULL) { |
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255 vmIntrinsics::ID iid = result_oop->intrinsic_id(); |
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256 if (MethodHandles::is_signature_polymorphic(iid)) { |
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257 // Do not link directly to these. The VM must produce a synthetic one using lookup_polymorphic_method. |
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258 return; |
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259 } |
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260 } |
0 | 261 result = methodHandle(THREAD, result_oop); |
262 } | |
263 | |
264 // returns first instance method | |
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265 // Looks up method in classes, then looks up local default methods |
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266 void LinkResolver::lookup_instance_method_in_klasses(methodHandle& result, KlassHandle klass, Symbol* name, Symbol* signature, TRAPS) { |
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267 Method* result_oop = klass->uncached_lookup_method(name, signature); |
0 | 268 result = methodHandle(THREAD, result_oop); |
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269 while (!result.is_null() && result->is_static() && result->method_holder()->super() != NULL) { |
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270 KlassHandle super_klass = KlassHandle(THREAD, result->method_holder()->super()); |
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271 result = methodHandle(THREAD, super_klass->uncached_lookup_method(name, signature)); |
0 | 272 } |
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273 |
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274 if (result.is_null()) { |
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275 Array<Method*>* default_methods = InstanceKlass::cast(klass())->default_methods(); |
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276 if (default_methods != NULL) { |
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277 result = methodHandle(InstanceKlass::find_method(default_methods, name, signature)); |
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278 assert(result.is_null() || !result->is_static(), "static defaults not allowed"); |
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279 } |
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280 } |
0 | 281 } |
282 | |
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283 int LinkResolver::vtable_index_of_interface_method(KlassHandle klass, |
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284 methodHandle resolved_method) { |
0 | 285 |
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286 int vtable_index = Method::invalid_vtable_index; |
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287 Symbol* name = resolved_method->name(); |
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288 Symbol* signature = resolved_method->signature(); |
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289 |
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290 // First check in default method array |
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291 if (!resolved_method->is_abstract() && |
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292 (InstanceKlass::cast(klass())->default_methods() != NULL)) { |
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293 int index = InstanceKlass::find_method_index(InstanceKlass::cast(klass())->default_methods(), name, signature); |
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294 if (index >= 0 ) { |
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295 vtable_index = InstanceKlass::cast(klass())->default_vtable_indices()->at(index); |
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296 } |
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297 } |
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298 if (vtable_index == Method::invalid_vtable_index) { |
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299 // get vtable_index for miranda methods |
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300 ResourceMark rm; |
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301 klassVtable *vt = InstanceKlass::cast(klass())->vtable(); |
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302 vtable_index = vt->index_of_miranda(name, signature); |
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303 } |
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304 return vtable_index; |
0 | 305 } |
306 | |
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307 void LinkResolver::lookup_method_in_interfaces(methodHandle& result, KlassHandle klass, Symbol* name, Symbol* signature, TRAPS) { |
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308 InstanceKlass *ik = InstanceKlass::cast(klass()); |
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309 result = methodHandle(THREAD, ik->lookup_method_in_all_interfaces(name, signature)); |
0 | 310 } |
311 | |
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312 void LinkResolver::lookup_polymorphic_method(methodHandle& result, |
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313 KlassHandle klass, Symbol* name, Symbol* full_signature, |
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314 KlassHandle current_klass, |
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315 Handle *appendix_result_or_null, |
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316 Handle *method_type_result, |
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317 TRAPS) { |
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318 vmIntrinsics::ID iid = MethodHandles::signature_polymorphic_name_id(name); |
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319 if (TraceMethodHandles) { |
9082 | 320 ResourceMark rm(THREAD); |
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321 tty->print_cr("lookup_polymorphic_method iid=%s %s.%s%s", |
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322 vmIntrinsics::name_at(iid), klass->external_name(), |
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323 name->as_C_string(), full_signature->as_C_string()); |
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324 } |
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325 if (EnableInvokeDynamic && |
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326 klass() == SystemDictionary::MethodHandle_klass() && |
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327 iid != vmIntrinsics::_none) { |
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328 if (MethodHandles::is_signature_polymorphic_intrinsic(iid)) { |
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329 // Most of these do not need an up-call to Java to resolve, so can be done anywhere. |
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330 // Do not erase last argument type (MemberName) if it is a static linkTo method. |
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331 bool keep_last_arg = MethodHandles::is_signature_polymorphic_static(iid); |
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332 TempNewSymbol basic_signature = |
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333 MethodHandles::lookup_basic_type_signature(full_signature, keep_last_arg, CHECK); |
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334 if (TraceMethodHandles) { |
9082 | 335 ResourceMark rm(THREAD); |
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336 tty->print_cr("lookup_polymorphic_method %s %s => basic %s", |
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337 name->as_C_string(), |
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338 full_signature->as_C_string(), |
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339 basic_signature->as_C_string()); |
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340 } |
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341 result = SystemDictionary::find_method_handle_intrinsic(iid, |
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342 basic_signature, |
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343 CHECK); |
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344 if (result.not_null()) { |
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345 assert(result->is_method_handle_intrinsic(), "MH.invokeBasic or MH.linkTo* intrinsic"); |
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346 assert(result->intrinsic_id() != vmIntrinsics::_invokeGeneric, "wrong place to find this"); |
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347 assert(basic_signature == result->signature(), "predict the result signature"); |
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348 if (TraceMethodHandles) { |
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349 tty->print("lookup_polymorphic_method => intrinsic "); |
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350 result->print_on(tty); |
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351 } |
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352 return; |
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353 } |
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354 } else if (iid == vmIntrinsics::_invokeGeneric |
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355 && !THREAD->is_Compiler_thread() |
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356 && appendix_result_or_null != NULL) { |
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357 // This is a method with type-checking semantics. |
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358 // We will ask Java code to spin an adapter method for it. |
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359 if (!MethodHandles::enabled()) { |
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360 // Make sure the Java part of the runtime has been booted up. |
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361 Klass* natives = SystemDictionary::MethodHandleNatives_klass(); |
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362 if (natives == NULL || InstanceKlass::cast(natives)->is_not_initialized()) { |
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363 SystemDictionary::resolve_or_fail(vmSymbols::java_lang_invoke_MethodHandleNatives(), |
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364 Handle(), |
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365 Handle(), |
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366 true, |
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367 CHECK); |
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368 } |
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369 } |
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370 |
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371 Handle appendix; |
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372 Handle method_type; |
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373 result = SystemDictionary::find_method_handle_invoker(name, |
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374 full_signature, |
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375 current_klass, |
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376 &appendix, |
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377 &method_type, |
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378 CHECK); |
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379 if (TraceMethodHandles) { |
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380 tty->print("lookup_polymorphic_method => (via Java) "); |
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381 result->print_on(tty); |
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382 tty->print(" lookup_polymorphic_method => appendix = "); |
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383 if (appendix.is_null()) tty->print_cr("(none)"); |
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384 else appendix->print_on(tty); |
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385 } |
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386 if (result.not_null()) { |
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387 #ifdef ASSERT |
9082 | 388 ResourceMark rm(THREAD); |
389 | |
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390 TempNewSymbol basic_signature = |
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391 MethodHandles::lookup_basic_type_signature(full_signature, CHECK); |
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392 int actual_size_of_params = result->size_of_parameters(); |
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393 int expected_size_of_params = ArgumentSizeComputer(basic_signature).size(); |
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394 // +1 for MethodHandle.this, +1 for trailing MethodType |
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395 if (!MethodHandles::is_signature_polymorphic_static(iid)) expected_size_of_params += 1; |
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396 if (appendix.not_null()) expected_size_of_params += 1; |
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397 if (actual_size_of_params != expected_size_of_params) { |
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398 tty->print_cr("*** basic_signature=%s", basic_signature->as_C_string()); |
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399 tty->print_cr("*** result for %s: ", vmIntrinsics::name_at(iid)); |
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400 result->print(); |
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401 } |
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402 assert(actual_size_of_params == expected_size_of_params, |
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403 err_msg("%d != %d", actual_size_of_params, expected_size_of_params)); |
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404 #endif //ASSERT |
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405 |
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406 assert(appendix_result_or_null != NULL, ""); |
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407 (*appendix_result_or_null) = appendix; |
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408 (*method_type_result) = method_type; |
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409 return; |
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410 } |
710 | 411 } |
412 } | |
413 } | |
414 | |
0 | 415 void LinkResolver::check_method_accessability(KlassHandle ref_klass, |
416 KlassHandle resolved_klass, | |
417 KlassHandle sel_klass, | |
418 methodHandle sel_method, | |
419 TRAPS) { | |
420 | |
421 AccessFlags flags = sel_method->access_flags(); | |
422 | |
12945 | 423 // Special case #1: arrays always override "clone". JVMS 2.15. |
0 | 424 // If the resolved klass is an array class, and the declaring class |
425 // is java.lang.Object and the method is "clone", set the flags | |
426 // to public. | |
12945 | 427 // Special case #2: If the resolved klass is an interface, and |
428 // the declaring class is java.lang.Object, and the method is | |
429 // "clone" or "finalize", set the flags to public. If the | |
430 // resolved interface does not contain "clone" or "finalize" | |
431 // methods, the method/interface method resolution looks to | |
432 // the interface's super class, java.lang.Object. With JDK 8 | |
433 // interface accessability check requirement, special casing | |
434 // this scenario is necessary to avoid an IAE. | |
0 | 435 // |
12945 | 436 // We'll check for each method name first and then java.lang.Object |
437 // to best short-circuit out of these tests. | |
438 if (((sel_method->name() == vmSymbols::clone_name() && | |
439 (resolved_klass->oop_is_array() || resolved_klass->is_interface())) || | |
440 (sel_method->name() == vmSymbols::finalize_method_name() && | |
441 resolved_klass->is_interface())) && | |
442 sel_klass() == SystemDictionary::Object_klass()) { | |
0 | 443 // We need to change "protected" to "public". |
12945 | 444 assert(flags.is_protected(), "clone or finalize not protected?"); |
0 | 445 jint new_flags = flags.as_int(); |
446 new_flags = new_flags & (~JVM_ACC_PROTECTED); | |
447 new_flags = new_flags | JVM_ACC_PUBLIC; | |
448 flags.set_flags(new_flags); | |
449 } | |
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450 // assert(extra_arg_result_or_null != NULL, "must be able to return extra argument"); |
0 | 451 |
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452 if (!Reflection::verify_field_access(ref_klass(), |
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453 resolved_klass(), |
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454 sel_klass(), |
0 | 455 flags, |
456 true)) { | |
457 ResourceMark rm(THREAD); | |
458 Exceptions::fthrow( | |
459 THREAD_AND_LOCATION, | |
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460 vmSymbols::java_lang_IllegalAccessError(), |
0 | 461 "tried to access method %s.%s%s from class %s", |
462 sel_klass->external_name(), | |
463 sel_method->name()->as_C_string(), | |
464 sel_method->signature()->as_C_string(), | |
465 ref_klass->external_name() | |
466 ); | |
467 return; | |
468 } | |
469 } | |
470 | |
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471 void LinkResolver::resolve_method_statically(methodHandle& resolved_method, KlassHandle& resolved_klass, |
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472 Bytecodes::Code code, constantPoolHandle pool, int index, TRAPS) { |
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473 // This method is used only |
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474 // (1) in C2 from InlineTree::ok_to_inline (via ciMethod::check_call), |
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475 // and |
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476 // (2) in Bytecode_invoke::static_target |
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477 // It appears to fail when applied to an invokeinterface call site. |
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478 // FIXME: Remove this method and ciMethod::check_call; refactor to use the other LinkResolver entry points. |
0 | 479 // resolve klass |
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480 if (code == Bytecodes::_invokedynamic) { |
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481 resolved_klass = SystemDictionary::MethodHandle_klass(); |
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482 Symbol* method_name = vmSymbols::invoke_name(); |
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483 Symbol* method_signature = pool->signature_ref_at(index); |
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484 KlassHandle current_klass(THREAD, pool->pool_holder()); |
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485 resolve_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, true, false, CHECK); |
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486 return; |
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487 } |
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488 |
0 | 489 resolve_klass(resolved_klass, pool, index, CHECK); |
490 | |
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491 Symbol* method_name = pool->name_ref_at(index); |
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492 Symbol* method_signature = pool->signature_ref_at(index); |
0 | 493 KlassHandle current_klass(THREAD, pool->pool_holder()); |
494 | |
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495 if (pool->has_preresolution() |
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496 || (resolved_klass() == SystemDictionary::MethodHandle_klass() && |
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497 MethodHandles::is_signature_polymorphic_name(resolved_klass(), method_name))) { |
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498 Method* result_oop = ConstantPool::method_at_if_loaded(pool, index); |
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499 if (result_oop != NULL) { |
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500 resolved_method = methodHandle(THREAD, result_oop); |
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501 return; |
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502 } |
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503 } |
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504 |
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505 if (code == Bytecodes::_invokeinterface) { |
13413 | 506 resolve_interface_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, true, true, CHECK); |
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507 } else if (code == Bytecodes::_invokevirtual) { |
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508 resolve_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, true, true, CHECK); |
13413 | 509 } else if (!resolved_klass->is_interface()) { |
510 resolve_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, true, false, CHECK); | |
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511 } else { |
13413 | 512 bool nostatics = (code == Bytecodes::_invokestatic) ? false : true; |
513 resolve_interface_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, true, nostatics, CHECK); | |
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514 } |
0 | 515 } |
516 | |
517 void LinkResolver::resolve_method(methodHandle& resolved_method, KlassHandle resolved_klass, | |
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518 Symbol* method_name, Symbol* method_signature, |
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519 KlassHandle current_klass, bool check_access, |
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520 bool require_methodref, TRAPS) { |
0 | 521 |
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522 Handle nested_exception; |
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523 |
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524 // 1. check if methodref required, that resolved_klass is not interfacemethodref |
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525 if (require_methodref && resolved_klass->is_interface()) { |
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526 ResourceMark rm(THREAD); |
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527 char buf[200]; |
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528 jio_snprintf(buf, sizeof(buf), "Found interface %s, but class was expected", |
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529 resolved_klass()->external_name()); |
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530 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); |
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531 } |
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532 |
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533 // 2. lookup method in resolved klass and its super klasses |
13413 | 534 lookup_method_in_klasses(resolved_method, resolved_klass, method_name, method_signature, true, CHECK); |
0 | 535 |
536 if (resolved_method.is_null()) { // not found in the class hierarchy | |
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537 // 3. lookup method in all the interfaces implemented by the resolved klass |
0 | 538 lookup_method_in_interfaces(resolved_method, resolved_klass, method_name, method_signature, CHECK); |
539 | |
540 if (resolved_method.is_null()) { | |
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541 // JSR 292: see if this is an implicitly generated method MethodHandle.linkToVirtual(*...), etc |
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542 lookup_polymorphic_method(resolved_method, resolved_klass, method_name, method_signature, |
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543 current_klass, (Handle*)NULL, (Handle*)NULL, THREAD); |
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544 if (HAS_PENDING_EXCEPTION) { |
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545 nested_exception = Handle(THREAD, PENDING_EXCEPTION); |
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546 CLEAR_PENDING_EXCEPTION; |
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547 } |
710 | 548 } |
549 | |
550 if (resolved_method.is_null()) { | |
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551 // 4. method lookup failed |
0 | 552 ResourceMark rm(THREAD); |
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553 THROW_MSG_CAUSE(vmSymbols::java_lang_NoSuchMethodError(), |
6983 | 554 Method::name_and_sig_as_C_string(resolved_klass(), |
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555 method_name, |
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556 method_signature), |
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557 nested_exception); |
0 | 558 } |
559 } | |
560 | |
561 // 5. check if method is concrete | |
562 if (resolved_method->is_abstract() && !resolved_klass->is_abstract()) { | |
563 ResourceMark rm(THREAD); | |
564 THROW_MSG(vmSymbols::java_lang_AbstractMethodError(), | |
6983 | 565 Method::name_and_sig_as_C_string(resolved_klass(), |
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566 method_name, |
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567 method_signature)); |
0 | 568 } |
569 | |
570 // 6. access checks, access checking may be turned off when calling from within the VM. | |
571 if (check_access) { | |
572 assert(current_klass.not_null() , "current_klass should not be null"); | |
573 | |
574 // check if method can be accessed by the referring class | |
575 check_method_accessability(current_klass, | |
576 resolved_klass, | |
577 KlassHandle(THREAD, resolved_method->method_holder()), | |
578 resolved_method, | |
579 CHECK); | |
580 | |
581 // check loader constraints | |
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582 Handle loader (THREAD, InstanceKlass::cast(current_klass())->class_loader()); |
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583 Handle class_loader (THREAD, resolved_method->method_holder()->class_loader()); |
0 | 584 { |
585 ResourceMark rm(THREAD); | |
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586 Symbol* failed_type_symbol = |
0 | 587 SystemDictionary::check_signature_loaders(method_signature, loader, |
588 class_loader, true, CHECK); | |
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589 if (failed_type_symbol != NULL) { |
0 | 590 const char* msg = "loader constraint violation: when resolving method" |
591 " \"%s\" the class loader (instance of %s) of the current class, %s," | |
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592 " and the class loader (instance of %s) for the method's defining class, %s, have" |
0 | 593 " different Class objects for the type %s used in the signature"; |
6983 | 594 char* sig = Method::name_and_sig_as_C_string(resolved_klass(),method_name,method_signature); |
0 | 595 const char* loader1 = SystemDictionary::loader_name(loader()); |
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596 char* current = InstanceKlass::cast(current_klass())->name()->as_C_string(); |
0 | 597 const char* loader2 = SystemDictionary::loader_name(class_loader()); |
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598 char* target = InstanceKlass::cast(resolved_method->method_holder()) |
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599 ->name()->as_C_string(); |
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600 char* failed_type_name = failed_type_symbol->as_C_string(); |
0 | 601 size_t buflen = strlen(msg) + strlen(sig) + strlen(loader1) + |
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602 strlen(current) + strlen(loader2) + strlen(target) + |
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603 strlen(failed_type_name) + 1; |
0 | 604 char* buf = NEW_RESOURCE_ARRAY_IN_THREAD(THREAD, char, buflen); |
605 jio_snprintf(buf, buflen, msg, sig, loader1, current, loader2, | |
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606 target, failed_type_name); |
0 | 607 THROW_MSG(vmSymbols::java_lang_LinkageError(), buf); |
608 } | |
609 } | |
610 } | |
611 } | |
612 | |
613 void LinkResolver::resolve_interface_method(methodHandle& resolved_method, | |
614 KlassHandle resolved_klass, | |
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615 Symbol* method_name, |
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616 Symbol* method_signature, |
0 | 617 KlassHandle current_klass, |
13413 | 618 bool check_access, |
619 bool nostatics, TRAPS) { | |
0 | 620 |
621 // check if klass is interface | |
622 if (!resolved_klass->is_interface()) { | |
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623 ResourceMark rm(THREAD); |
0 | 624 char buf[200]; |
6983 | 625 jio_snprintf(buf, sizeof(buf), "Found class %s, but interface was expected", resolved_klass()->external_name()); |
0 | 626 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); |
627 } | |
628 | |
629 // lookup method in this interface or its super, java.lang.Object | |
13413 | 630 // JDK8: also look for static methods |
631 lookup_method_in_klasses(resolved_method, resolved_klass, method_name, method_signature, false, CHECK); | |
0 | 632 |
633 if (resolved_method.is_null()) { | |
634 // lookup method in all the super-interfaces | |
635 lookup_method_in_interfaces(resolved_method, resolved_klass, method_name, method_signature, CHECK); | |
636 if (resolved_method.is_null()) { | |
637 // no method found | |
638 ResourceMark rm(THREAD); | |
639 THROW_MSG(vmSymbols::java_lang_NoSuchMethodError(), | |
6983 | 640 Method::name_and_sig_as_C_string(resolved_klass(), |
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641 method_name, |
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642 method_signature)); |
0 | 643 } |
644 } | |
645 | |
13413 | 646 if (nostatics && resolved_method->is_static()) { |
647 ResourceMark rm(THREAD); | |
648 char buf[200]; | |
649 jio_snprintf(buf, sizeof(buf), "Expected instance not static method %s", Method::name_and_sig_as_C_string(resolved_klass(), | |
650 resolved_method->name(), | |
651 resolved_method->signature())); | |
652 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); | |
653 } | |
654 | |
655 | |
0 | 656 if (check_access) { |
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657 // JDK8 adds non-public interface methods, and accessability check requirement |
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658 assert(current_klass.not_null() , "current_klass should not be null"); |
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659 |
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660 // check if method can be accessed by the referring class |
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661 check_method_accessability(current_klass, |
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662 resolved_klass, |
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663 KlassHandle(THREAD, resolved_method->method_holder()), |
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664 resolved_method, |
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665 CHECK); |
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666 |
0 | 667 HandleMark hm(THREAD); |
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668 Handle loader (THREAD, InstanceKlass::cast(current_klass())->class_loader()); |
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669 Handle class_loader (THREAD, resolved_method->method_holder()->class_loader()); |
0 | 670 { |
671 ResourceMark rm(THREAD); | |
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672 Symbol* failed_type_symbol = |
0 | 673 SystemDictionary::check_signature_loaders(method_signature, loader, |
674 class_loader, true, CHECK); | |
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675 if (failed_type_symbol != NULL) { |
0 | 676 const char* msg = "loader constraint violation: when resolving " |
677 "interface method \"%s\" the class loader (instance of %s) of the " | |
678 "current class, %s, and the class loader (instance of %s) for " | |
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679 "the method's defining class, %s, have different Class objects for the type %s " |
0 | 680 "used in the signature"; |
6983 | 681 char* sig = Method::name_and_sig_as_C_string(resolved_klass(),method_name,method_signature); |
0 | 682 const char* loader1 = SystemDictionary::loader_name(loader()); |
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683 char* current = InstanceKlass::cast(current_klass())->name()->as_C_string(); |
0 | 684 const char* loader2 = SystemDictionary::loader_name(class_loader()); |
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685 char* target = InstanceKlass::cast(resolved_method->method_holder()) |
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686 ->name()->as_C_string(); |
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687 char* failed_type_name = failed_type_symbol->as_C_string(); |
0 | 688 size_t buflen = strlen(msg) + strlen(sig) + strlen(loader1) + |
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689 strlen(current) + strlen(loader2) + strlen(target) + |
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690 strlen(failed_type_name) + 1; |
0 | 691 char* buf = NEW_RESOURCE_ARRAY_IN_THREAD(THREAD, char, buflen); |
692 jio_snprintf(buf, buflen, msg, sig, loader1, current, loader2, | |
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693 target, failed_type_name); |
0 | 694 THROW_MSG(vmSymbols::java_lang_LinkageError(), buf); |
695 } | |
696 } | |
697 } | |
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698 |
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699 if (TraceItables && Verbose) { |
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700 ResourceMark rm(THREAD); |
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701 tty->print("invokeinterface resolved method: caller-class:%s, compile-time-class:%s, method:%s, method_holder:%s, access_flags: ", |
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702 (current_klass.is_null() ? "<NULL>" : current_klass->internal_name()), |
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703 (resolved_klass.is_null() ? "<NULL>" : resolved_klass->internal_name()), |
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704 Method::name_and_sig_as_C_string(resolved_klass(), |
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705 resolved_method->name(), |
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706 resolved_method->signature()), |
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707 resolved_method->method_holder()->internal_name() |
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708 ); |
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709 resolved_method->access_flags().print_on(tty); |
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710 if (resolved_method->is_default_method()) { |
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711 tty->print("default "); |
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712 } |
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713 if (resolved_method->is_overpass()) { |
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714 tty->print("overpass"); |
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715 } |
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716 tty->cr(); |
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717 } |
0 | 718 } |
719 | |
720 //------------------------------------------------------------------------------------------------------------------------ | |
721 // Field resolution | |
722 | |
723 void LinkResolver::check_field_accessability(KlassHandle ref_klass, | |
724 KlassHandle resolved_klass, | |
725 KlassHandle sel_klass, | |
726 fieldDescriptor& fd, | |
727 TRAPS) { | |
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728 if (!Reflection::verify_field_access(ref_klass(), |
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729 resolved_klass(), |
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730 sel_klass(), |
0 | 731 fd.access_flags(), |
732 true)) { | |
733 ResourceMark rm(THREAD); | |
734 Exceptions::fthrow( | |
735 THREAD_AND_LOCATION, | |
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736 vmSymbols::java_lang_IllegalAccessError(), |
0 | 737 "tried to access field %s.%s from class %s", |
738 sel_klass->external_name(), | |
739 fd.name()->as_C_string(), | |
740 ref_klass->external_name() | |
741 ); | |
742 return; | |
743 } | |
744 } | |
745 | |
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746 void LinkResolver::resolve_field_access(fieldDescriptor& result, constantPoolHandle pool, int index, Bytecodes::Code byte, TRAPS) { |
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747 // Load these early in case the resolve of the containing klass fails |
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748 Symbol* field = pool->name_ref_at(index); |
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749 Symbol* sig = pool->signature_ref_at(index); |
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750 |
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751 // resolve specified klass |
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752 KlassHandle resolved_klass; |
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753 resolve_klass(resolved_klass, pool, index, CHECK); |
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754 |
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755 KlassHandle current_klass(THREAD, pool->pool_holder()); |
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756 resolve_field(result, resolved_klass, field, sig, current_klass, byte, true, true, CHECK); |
0 | 757 } |
758 | |
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759 void LinkResolver::resolve_field(fieldDescriptor& fd, KlassHandle resolved_klass, Symbol* field, Symbol* sig, |
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760 KlassHandle current_klass, Bytecodes::Code byte, bool check_access, bool initialize_class, |
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761 TRAPS) { |
0 | 762 assert(byte == Bytecodes::_getstatic || byte == Bytecodes::_putstatic || |
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763 byte == Bytecodes::_getfield || byte == Bytecodes::_putfield || |
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764 (byte == Bytecodes::_nop && !check_access), "bad field access bytecode"); |
0 | 765 |
766 bool is_static = (byte == Bytecodes::_getstatic || byte == Bytecodes::_putstatic); | |
767 bool is_put = (byte == Bytecodes::_putfield || byte == Bytecodes::_putstatic); | |
768 | |
769 // Check if there's a resolved klass containing the field | |
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770 if (resolved_klass.is_null()) { |
0 | 771 ResourceMark rm(THREAD); |
772 THROW_MSG(vmSymbols::java_lang_NoSuchFieldError(), field->as_C_string()); | |
773 } | |
774 | |
775 // Resolve instance field | |
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776 KlassHandle sel_klass(THREAD, InstanceKlass::cast(resolved_klass())->find_field(field, sig, &fd)); |
0 | 777 // check if field exists; i.e., if a klass containing the field def has been selected |
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778 if (sel_klass.is_null()) { |
0 | 779 ResourceMark rm(THREAD); |
780 THROW_MSG(vmSymbols::java_lang_NoSuchFieldError(), field->as_C_string()); | |
781 } | |
782 | |
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783 if (!check_access) |
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784 // Access checking may be turned off when calling from within the VM. |
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785 return; |
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786 |
0 | 787 // check access |
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788 check_field_accessability(current_klass, resolved_klass, sel_klass, fd, CHECK); |
0 | 789 |
790 // check for errors | |
791 if (is_static != fd.is_static()) { | |
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792 ResourceMark rm(THREAD); |
0 | 793 char msg[200]; |
6983 | 794 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 | 795 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), msg); |
796 } | |
797 | |
798 // Final fields can only be accessed from its own class. | |
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799 if (is_put && fd.access_flags().is_final() && sel_klass() != current_klass()) { |
0 | 800 THROW(vmSymbols::java_lang_IllegalAccessError()); |
801 } | |
802 | |
803 // initialize resolved_klass if necessary | |
804 // note 1: the klass which declared the field must be initialized (i.e, sel_klass) | |
805 // according to the newest JVM spec (5.5, p.170) - was bug (gri 7/28/99) | |
806 // | |
807 // note 2: we don't want to force initialization if we are just checking | |
808 // if the field access is legal; e.g., during compilation | |
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809 if (is_static && initialize_class) { |
0 | 810 sel_klass->initialize(CHECK); |
811 } | |
812 | |
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813 if (sel_klass() != current_klass()) { |
0 | 814 HandleMark hm(THREAD); |
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815 Handle ref_loader (THREAD, InstanceKlass::cast(current_klass())->class_loader()); |
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816 Handle sel_loader (THREAD, InstanceKlass::cast(sel_klass())->class_loader()); |
0 | 817 { |
818 ResourceMark rm(THREAD); | |
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819 Symbol* failed_type_symbol = |
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820 SystemDictionary::check_signature_loaders(sig, |
0 | 821 ref_loader, sel_loader, |
822 false, | |
823 CHECK); | |
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824 if (failed_type_symbol != NULL) { |
0 | 825 const char* msg = "loader constraint violation: when resolving field" |
826 " \"%s\" the class loader (instance of %s) of the referring class, " | |
827 "%s, and the class loader (instance of %s) for the field's resolved " | |
828 "type, %s, have different Class objects for that type"; | |
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829 char* field_name = field->as_C_string(); |
0 | 830 const char* loader1 = SystemDictionary::loader_name(ref_loader()); |
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831 char* sel = InstanceKlass::cast(sel_klass())->name()->as_C_string(); |
0 | 832 const char* loader2 = SystemDictionary::loader_name(sel_loader()); |
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833 char* failed_type_name = failed_type_symbol->as_C_string(); |
0 | 834 size_t buflen = strlen(msg) + strlen(field_name) + strlen(loader1) + |
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835 strlen(sel) + strlen(loader2) + strlen(failed_type_name) + 1; |
0 | 836 char* buf = NEW_RESOURCE_ARRAY_IN_THREAD(THREAD, char, buflen); |
837 jio_snprintf(buf, buflen, msg, field_name, loader1, sel, loader2, | |
838 failed_type_name); | |
839 THROW_MSG(vmSymbols::java_lang_LinkageError(), buf); | |
840 } | |
841 } | |
842 } | |
843 | |
844 // return information. note that the klass is set to the actual klass containing the | |
845 // field, otherwise access of static fields in superclasses will not work. | |
846 } | |
847 | |
848 | |
849 //------------------------------------------------------------------------------------------------------------------------ | |
850 // Invoke resolution | |
851 // | |
852 // Naming conventions: | |
853 // | |
854 // resolved_method the specified method (i.e., static receiver specified via constant pool index) | |
855 // sel_method the selected method (selected via run-time lookup; e.g., based on dynamic receiver class) | |
856 // resolved_klass the specified klass (i.e., specified via constant pool index) | |
857 // recv_klass the receiver klass | |
858 | |
859 | |
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860 void LinkResolver::resolve_static_call(CallInfo& result, KlassHandle& resolved_klass, Symbol* method_name, |
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861 Symbol* method_signature, KlassHandle current_klass, |
0 | 862 bool check_access, bool initialize_class, TRAPS) { |
863 methodHandle resolved_method; | |
864 linktime_resolve_static_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK); | |
6983 | 865 resolved_klass = KlassHandle(THREAD, resolved_method->method_holder()); |
0 | 866 |
867 // Initialize klass (this should only happen if everything is ok) | |
868 if (initialize_class && resolved_klass->should_be_initialized()) { | |
869 resolved_klass->initialize(CHECK); | |
870 linktime_resolve_static_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK); | |
871 } | |
872 | |
873 // setup result | |
874 result.set_static(resolved_klass, resolved_method, CHECK); | |
875 } | |
876 | |
877 // throws linktime exceptions | |
878 void LinkResolver::linktime_resolve_static_method(methodHandle& resolved_method, KlassHandle resolved_klass, | |
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879 Symbol* method_name, Symbol* method_signature, |
0 | 880 KlassHandle current_klass, bool check_access, TRAPS) { |
881 | |
13413 | 882 if (!resolved_klass->is_interface()) { |
883 resolve_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, false, CHECK); | |
884 } else { | |
885 resolve_interface_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, false, CHECK); | |
886 } | |
0 | 887 assert(resolved_method->name() != vmSymbols::class_initializer_name(), "should have been checked in verifier"); |
888 | |
889 // check if static | |
890 if (!resolved_method->is_static()) { | |
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891 ResourceMark rm(THREAD); |
0 | 892 char buf[200]; |
6983 | 893 jio_snprintf(buf, sizeof(buf), "Expected static method %s", Method::name_and_sig_as_C_string(resolved_klass(), |
0 | 894 resolved_method->name(), |
895 resolved_method->signature())); | |
896 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); | |
897 } | |
898 } | |
899 | |
900 | |
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901 void LinkResolver::resolve_special_call(CallInfo& result, KlassHandle resolved_klass, Symbol* method_name, |
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902 Symbol* method_signature, KlassHandle current_klass, bool check_access, TRAPS) { |
0 | 903 methodHandle resolved_method; |
904 linktime_resolve_special_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK); | |
905 runtime_resolve_special_method(result, resolved_method, resolved_klass, current_klass, check_access, CHECK); | |
906 } | |
907 | |
908 // throws linktime exceptions | |
909 void LinkResolver::linktime_resolve_special_method(methodHandle& resolved_method, KlassHandle resolved_klass, | |
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910 Symbol* method_name, Symbol* method_signature, |
0 | 911 KlassHandle current_klass, bool check_access, TRAPS) { |
912 | |
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913 // Invokespecial is called for multiple special reasons: |
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914 // <init> |
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915 // local private method invocation, for classes and interfaces |
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916 // superclass.method, which can also resolve to a default method |
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917 // and the selected method is recalculated relative to the direct superclass |
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918 // superinterface.method, which explicitly does not check shadowing |
6934 | 919 |
13413 | 920 if (!resolved_klass->is_interface()) { |
921 resolve_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, false, CHECK); | |
922 } else { | |
923 resolve_interface_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, true, CHECK); | |
924 } | |
0 | 925 |
926 // check if method name is <init>, that it is found in same klass as static type | |
927 if (resolved_method->name() == vmSymbols::object_initializer_name() && | |
928 resolved_method->method_holder() != resolved_klass()) { | |
929 ResourceMark rm(THREAD); | |
930 Exceptions::fthrow( | |
931 THREAD_AND_LOCATION, | |
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932 vmSymbols::java_lang_NoSuchMethodError(), |
0 | 933 "%s: method %s%s not found", |
934 resolved_klass->external_name(), | |
935 resolved_method->name()->as_C_string(), | |
936 resolved_method->signature()->as_C_string() | |
937 ); | |
938 return; | |
939 } | |
940 | |
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941 // check if invokespecial's interface method reference is in an indirect superinterface |
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942 if (!current_klass.is_null() && resolved_klass->is_interface()) { |
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943 Klass *klass_to_check = !InstanceKlass::cast(current_klass())->is_anonymous() ? |
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944 current_klass() : |
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945 InstanceKlass::cast(current_klass())->host_klass(); |
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946 |
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947 if (!InstanceKlass::cast(klass_to_check)->is_same_or_direct_interface(resolved_klass())) { |
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948 ResourceMark rm(THREAD); |
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949 char buf[200]; |
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950 jio_snprintf(buf, sizeof(buf), |
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951 "Interface method reference: %s, is in an indirect superinterface of %s", |
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952 Method::name_and_sig_as_C_string(resolved_klass(), |
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953 resolved_method->name(), |
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954 resolved_method->signature()), |
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955 current_klass->external_name()); |
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956 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); |
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957 } |
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|
958 } |
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959 |
0 | 960 // check if not static |
961 if (resolved_method->is_static()) { | |
3324
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962 ResourceMark rm(THREAD); |
0 | 963 char buf[200]; |
964 jio_snprintf(buf, sizeof(buf), | |
965 "Expecting non-static method %s", | |
6983 | 966 Method::name_and_sig_as_C_string(resolved_klass(), |
0 | 967 resolved_method->name(), |
968 resolved_method->signature())); | |
969 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); | |
970 } | |
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971 |
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972 if (TraceItables && Verbose) { |
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973 ResourceMark rm(THREAD); |
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974 tty->print("invokespecial resolved method: caller-class:%s, compile-time-class:%s, method:%s, method_holder:%s, access_flags: ", |
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975 (current_klass.is_null() ? "<NULL>" : current_klass->internal_name()), |
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976 (resolved_klass.is_null() ? "<NULL>" : resolved_klass->internal_name()), |
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977 Method::name_and_sig_as_C_string(resolved_klass(), |
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978 resolved_method->name(), |
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979 resolved_method->signature()), |
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980 resolved_method->method_holder()->internal_name() |
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981 ); |
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982 resolved_method->access_flags().print_on(tty); |
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983 if (resolved_method->is_default_method()) { |
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984 tty->print("default "); |
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985 } |
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986 if (resolved_method->is_overpass()) { |
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987 tty->print("overpass"); |
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988 } |
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989 tty->cr(); |
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990 } |
0 | 991 } |
992 | |
993 // throws runtime exceptions | |
994 void LinkResolver::runtime_resolve_special_method(CallInfo& result, methodHandle resolved_method, KlassHandle resolved_klass, | |
995 KlassHandle current_klass, bool check_access, TRAPS) { | |
996 | |
997 // resolved method is selected method unless we have an old-style lookup | |
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998 // for a superclass method |
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999 // Invokespecial for a superinterface, resolved method is selected method, |
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1000 // no checks for shadowing |
0 | 1001 methodHandle sel_method(THREAD, resolved_method()); |
1002 | |
1003 // check if this is an old-style super call and do a new lookup if so | |
1004 { KlassHandle method_klass = KlassHandle(THREAD, | |
1005 resolved_method->method_holder()); | |
1006 | |
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1007 if (check_access && |
0 | 1008 // a) check if ACC_SUPER flag is set for the current class |
8702 | 1009 (current_klass->is_super() || !AllowNonVirtualCalls) && |
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1010 // b) check if the class of the resolved_klass is a superclass |
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1011 // (not supertype in order to exclude interface classes) of the current class. |
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1012 // This check is not performed for super.invoke for interface methods |
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1013 // in super interfaces. |
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1014 current_klass->is_subclass_of(resolved_klass()) && |
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1015 current_klass() != resolved_klass() && |
0 | 1016 // c) check if the method is not <init> |
1017 resolved_method->name() != vmSymbols::object_initializer_name()) { | |
1018 // Lookup super method | |
1019 KlassHandle super_klass(THREAD, current_klass->super()); | |
1020 lookup_instance_method_in_klasses(sel_method, super_klass, | |
2177
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1021 resolved_method->name(), |
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1022 resolved_method->signature(), CHECK); |
0 | 1023 // check if found |
1024 if (sel_method.is_null()) { | |
1025 ResourceMark rm(THREAD); | |
1026 THROW_MSG(vmSymbols::java_lang_AbstractMethodError(), | |
6983 | 1027 Method::name_and_sig_as_C_string(resolved_klass(), |
0 | 1028 resolved_method->name(), |
1029 resolved_method->signature())); | |
1030 } | |
1031 } | |
1032 } | |
1033 | |
1034 // check if not static | |
1035 if (sel_method->is_static()) { | |
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1036 ResourceMark rm(THREAD); |
0 | 1037 char buf[200]; |
6983 | 1038 jio_snprintf(buf, sizeof(buf), "Expecting non-static method %s", Method::name_and_sig_as_C_string(resolved_klass(), |
0 | 1039 resolved_method->name(), |
1040 resolved_method->signature())); | |
1041 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); | |
1042 } | |
1043 | |
1044 // check if abstract | |
1045 if (sel_method->is_abstract()) { | |
1046 ResourceMark rm(THREAD); | |
1047 THROW_MSG(vmSymbols::java_lang_AbstractMethodError(), | |
6983 | 1048 Method::name_and_sig_as_C_string(resolved_klass(), |
0 | 1049 sel_method->name(), |
1050 sel_method->signature())); | |
1051 } | |
1052 | |
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1053 if (TraceItables && Verbose) { |
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1054 ResourceMark rm(THREAD); |
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1055 tty->print("invokespecial selected method: resolved-class:%s, method:%s, method_holder:%s, access_flags: ", |
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1056 (resolved_klass.is_null() ? "<NULL>" : resolved_klass->internal_name()), |
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1057 Method::name_and_sig_as_C_string(resolved_klass(), |
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1058 sel_method->name(), |
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1059 sel_method->signature()), |
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1060 sel_method->method_holder()->internal_name() |
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1061 ); |
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1062 sel_method->access_flags().print_on(tty); |
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1063 if (sel_method->is_default_method()) { |
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1064 tty->print("default "); |
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1065 } |
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1066 if (sel_method->is_overpass()) { |
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1067 tty->print("overpass"); |
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1068 } |
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1069 tty->cr(); |
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1070 } |
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1071 |
0 | 1072 // setup result |
1073 result.set_static(resolved_klass, sel_method, CHECK); | |
1074 } | |
1075 | |
1076 void LinkResolver::resolve_virtual_call(CallInfo& result, Handle recv, KlassHandle receiver_klass, KlassHandle resolved_klass, | |
2177
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1077 Symbol* method_name, Symbol* method_signature, KlassHandle current_klass, |
0 | 1078 bool check_access, bool check_null_and_abstract, TRAPS) { |
1079 methodHandle resolved_method; | |
1080 linktime_resolve_virtual_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK); | |
1081 runtime_resolve_virtual_method(result, resolved_method, resolved_klass, recv, receiver_klass, check_null_and_abstract, CHECK); | |
1082 } | |
1083 | |
1084 // throws linktime exceptions | |
1085 void LinkResolver::linktime_resolve_virtual_method(methodHandle &resolved_method, KlassHandle resolved_klass, | |
2177
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1086 Symbol* method_name, Symbol* method_signature, |
0 | 1087 KlassHandle current_klass, bool check_access, TRAPS) { |
1088 // normal method resolution | |
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1089 resolve_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, true, CHECK); |
0 | 1090 |
1091 assert(resolved_method->name() != vmSymbols::object_initializer_name(), "should have been checked in verifier"); | |
1092 assert(resolved_method->name() != vmSymbols::class_initializer_name (), "should have been checked in verifier"); | |
1093 | |
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1094 // check if private interface method |
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1095 if (resolved_klass->is_interface() && resolved_method->is_private()) { |
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1096 ResourceMark rm(THREAD); |
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1097 char buf[200]; |
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1098 jio_snprintf(buf, sizeof(buf), "private interface method requires invokespecial, not invokevirtual: method %s, caller-class:%s", |
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1099 Method::name_and_sig_as_C_string(resolved_klass(), |
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1100 resolved_method->name(), |
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1101 resolved_method->signature()), |
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1102 (current_klass.is_null() ? "<NULL>" : current_klass->internal_name())); |
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1103 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); |
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1104 } |
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1105 |
0 | 1106 // check if not static |
1107 if (resolved_method->is_static()) { | |
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1108 ResourceMark rm(THREAD); |
0 | 1109 char buf[200]; |
6983 | 1110 jio_snprintf(buf, sizeof(buf), "Expecting non-static method %s", Method::name_and_sig_as_C_string(resolved_klass(), |
0 | 1111 resolved_method->name(), |
1112 resolved_method->signature())); | |
1113 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); | |
1114 } | |
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1115 |
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1116 if (PrintVtables && Verbose) { |
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1117 ResourceMark rm(THREAD); |
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1118 tty->print("invokevirtual resolved method: caller-class:%s, compile-time-class:%s, method:%s, method_holder:%s, access_flags: ", |
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1119 (current_klass.is_null() ? "<NULL>" : current_klass->internal_name()), |
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1120 (resolved_klass.is_null() ? "<NULL>" : resolved_klass->internal_name()), |
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1121 Method::name_and_sig_as_C_string(resolved_klass(), |
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1122 resolved_method->name(), |
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1123 resolved_method->signature()), |
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1124 resolved_method->method_holder()->internal_name() |
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1125 ); |
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1126 resolved_method->access_flags().print_on(tty); |
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1127 if (resolved_method->is_default_method()) { |
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1128 tty->print("default "); |
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1129 } |
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1130 if (resolved_method->is_overpass()) { |
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1131 tty->print("overpass"); |
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1132 } |
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1133 tty->cr(); |
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1134 } |
0 | 1135 } |
1136 | |
1137 // throws runtime exceptions | |
1138 void LinkResolver::runtime_resolve_virtual_method(CallInfo& result, | |
1139 methodHandle resolved_method, | |
1140 KlassHandle resolved_klass, | |
1141 Handle recv, | |
1142 KlassHandle recv_klass, | |
1143 bool check_null_and_abstract, | |
1144 TRAPS) { | |
1145 | |
1146 // setup default return values | |
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1147 int vtable_index = Method::invalid_vtable_index; |
0 | 1148 methodHandle selected_method; |
1149 | |
1150 assert(recv.is_null() || recv->is_oop(), "receiver is not an oop"); | |
1151 | |
1152 // runtime method resolution | |
1153 if (check_null_and_abstract && recv.is_null()) { // check if receiver exists | |
1154 THROW(vmSymbols::java_lang_NullPointerException()); | |
1155 } | |
1156 | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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6271
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|
1157 // Virtual methods cannot be resolved before its klass has been linked, for otherwise the Method*'s |
0 | 1158 // has not been rewritten, and the vtable initialized. Make sure to do this after the nullcheck, since |
1159 // a missing receiver might result in a bogus lookup. | |
6940
18fb7da42534
8000725: NPG: method_holder() and pool_holder() and pool_holder field should be InstanceKlass
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6934
diff
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|
1160 assert(resolved_method->method_holder()->is_linked(), "must be linked"); |
0 | 1161 |
1162 // do lookup based on receiver klass using the vtable index | |
6725
da91efe96a93
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6271
diff
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|
1163 if (resolved_method->method_holder()->is_interface()) { // miranda method |
12823
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
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|
1164 vtable_index = vtable_index_of_interface_method(resolved_klass, |
13055
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8027229: ICCE expected for >=2 maximally specific default methods.
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|
1165 resolved_method); |
0 | 1166 assert(vtable_index >= 0 , "we should have valid vtable index at this point"); |
1167 | |
6725
da91efe96a93
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|
1168 InstanceKlass* inst = InstanceKlass::cast(recv_klass()); |
0 | 1169 selected_method = methodHandle(THREAD, inst->method_at_vtable(vtable_index)); |
1170 } else { | |
1171 // at this point we are sure that resolved_method is virtual and not | |
1172 // a miranda method; therefore, it must have a valid vtable index. | |
12264
b2e698d2276c
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10128
diff
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|
1173 assert(!resolved_method->has_itable_index(), ""); |
0 | 1174 vtable_index = resolved_method->vtable_index(); |
1175 // We could get a negative vtable_index for final methods, | |
1176 // because as an optimization they are they are never put in the vtable, | |
1177 // unless they override an existing method. | |
1178 // If we do get a negative, it means the resolved method is the the selected | |
1179 // method, and it can never be changed by an override. | |
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6271
diff
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|
1180 if (vtable_index == Method::nonvirtual_vtable_index) { |
0 | 1181 assert(resolved_method->can_be_statically_bound(), "cannot override this method"); |
1182 selected_method = resolved_method; | |
1183 } else { | |
1184 // recv_klass might be an arrayKlassOop but all vtables start at | |
1185 // the same place. The cast is to avoid virtual call and assertion. | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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6271
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|
1186 InstanceKlass* inst = (InstanceKlass*)recv_klass(); |
0 | 1187 selected_method = methodHandle(THREAD, inst->method_at_vtable(vtable_index)); |
1188 } | |
1189 } | |
1190 | |
1191 // check if method exists | |
1192 if (selected_method.is_null()) { | |
1193 ResourceMark rm(THREAD); | |
1194 THROW_MSG(vmSymbols::java_lang_AbstractMethodError(), | |
6983 | 1195 Method::name_and_sig_as_C_string(resolved_klass(), |
0 | 1196 resolved_method->name(), |
1197 resolved_method->signature())); | |
1198 } | |
1199 | |
1200 // check if abstract | |
1201 if (check_null_and_abstract && selected_method->is_abstract()) { | |
1202 ResourceMark rm(THREAD); | |
1203 THROW_MSG(vmSymbols::java_lang_AbstractMethodError(), | |
6983 | 1204 Method::name_and_sig_as_C_string(resolved_klass(), |
0 | 1205 selected_method->name(), |
1206 selected_method->signature())); | |
1207 } | |
1208 | |
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|
1209 if (PrintVtables && Verbose) { |
36b97be47bde
8011311: Private interface methods. Default conflicts:ICCE. no erased_super_default.
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|
1210 ResourceMark rm(THREAD); |
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8011311: Private interface methods. Default conflicts:ICCE. no erased_super_default.
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|
1211 tty->print("invokevirtual selected method: receiver-class:%s, resolved-class:%s, method:%s, method_holder:%s, vtable_index:%d, access_flags: ", |
36b97be47bde
8011311: Private interface methods. Default conflicts:ICCE. no erased_super_default.
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diff
changeset
|
1212 (recv_klass.is_null() ? "<NULL>" : recv_klass->internal_name()), |
36b97be47bde
8011311: Private interface methods. Default conflicts:ICCE. no erased_super_default.
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changeset
|
1213 (resolved_klass.is_null() ? "<NULL>" : resolved_klass->internal_name()), |
36b97be47bde
8011311: Private interface methods. Default conflicts:ICCE. no erased_super_default.
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|
1214 Method::name_and_sig_as_C_string(resolved_klass(), |
36b97be47bde
8011311: Private interface methods. Default conflicts:ICCE. no erased_super_default.
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|
1215 resolved_method->name(), |
36b97be47bde
8011311: Private interface methods. Default conflicts:ICCE. no erased_super_default.
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|
1216 resolved_method->signature()), |
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8011311: Private interface methods. Default conflicts:ICCE. no erased_super_default.
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|
1217 selected_method->method_holder()->internal_name(), |
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8011311: Private interface methods. Default conflicts:ICCE. no erased_super_default.
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|
1218 vtable_index |
36b97be47bde
8011311: Private interface methods. Default conflicts:ICCE. no erased_super_default.
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|
1219 ); |
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8011311: Private interface methods. Default conflicts:ICCE. no erased_super_default.
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|
1220 selected_method->access_flags().print_on(tty); |
12823
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|
1221 if (selected_method->is_default_method()) { |
13055
fce21ac5968d
8027229: ICCE expected for >=2 maximally specific default methods.
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|
1222 tty->print("default "); |
12318
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|
1223 } |
12823
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8009130: Lambda: Fix access controls, loader constraints.
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|
1224 if (selected_method->is_overpass()) { |
12318
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8011311: Private interface methods. Default conflicts:ICCE. no erased_super_default.
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|
1225 tty->print("overpass"); |
36b97be47bde
8011311: Private interface methods. Default conflicts:ICCE. no erased_super_default.
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diff
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|
1226 } |
36b97be47bde
8011311: Private interface methods. Default conflicts:ICCE. no erased_super_default.
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diff
changeset
|
1227 tty->cr(); |
36b97be47bde
8011311: Private interface methods. Default conflicts:ICCE. no erased_super_default.
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diff
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|
1228 } |
0 | 1229 // setup result |
1230 result.set_virtual(resolved_klass, recv_klass, resolved_method, selected_method, vtable_index, CHECK); | |
1231 } | |
1232 | |
1233 void LinkResolver::resolve_interface_call(CallInfo& result, Handle recv, KlassHandle recv_klass, KlassHandle resolved_klass, | |
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
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1972
diff
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|
1234 Symbol* method_name, Symbol* method_signature, KlassHandle current_klass, |
0 | 1235 bool check_access, bool check_null_and_abstract, TRAPS) { |
1236 methodHandle resolved_method; | |
1237 linktime_resolve_interface_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK); | |
1238 runtime_resolve_interface_method(result, resolved_method, resolved_klass, recv, recv_klass, check_null_and_abstract, CHECK); | |
1239 } | |
1240 | |
1241 // throws linktime exceptions | |
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
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diff
changeset
|
1242 void LinkResolver::linktime_resolve_interface_method(methodHandle& resolved_method, KlassHandle resolved_klass, Symbol* method_name, |
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
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diff
changeset
|
1243 Symbol* method_signature, KlassHandle current_klass, bool check_access, TRAPS) { |
0 | 1244 // normal interface method resolution |
13413 | 1245 resolve_interface_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, true, CHECK); |
0 | 1246 |
1247 assert(resolved_method->name() != vmSymbols::object_initializer_name(), "should have been checked in verifier"); | |
1248 assert(resolved_method->name() != vmSymbols::class_initializer_name (), "should have been checked in verifier"); | |
1249 } | |
1250 | |
1251 // throws runtime exceptions | |
1252 void LinkResolver::runtime_resolve_interface_method(CallInfo& result, methodHandle resolved_method, KlassHandle resolved_klass, | |
1253 Handle recv, KlassHandle recv_klass, bool check_null_and_abstract, TRAPS) { | |
1254 // check if receiver exists | |
1255 if (check_null_and_abstract && recv.is_null()) { | |
1256 THROW(vmSymbols::java_lang_NullPointerException()); | |
1257 } | |
1258 | |
12318
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|
1259 // check if private interface method |
36b97be47bde
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|
1260 if (resolved_klass->is_interface() && resolved_method->is_private()) { |
36b97be47bde
8011311: Private interface methods. Default conflicts:ICCE. no erased_super_default.
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diff
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|
1261 ResourceMark rm(THREAD); |
36b97be47bde
8011311: Private interface methods. Default conflicts:ICCE. no erased_super_default.
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diff
changeset
|
1262 char buf[200]; |
36b97be47bde
8011311: Private interface methods. Default conflicts:ICCE. no erased_super_default.
acorn
parents:
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diff
changeset
|
1263 jio_snprintf(buf, sizeof(buf), "private interface method requires invokespecial, not invokeinterface: method %s", |
36b97be47bde
8011311: Private interface methods. Default conflicts:ICCE. no erased_super_default.
acorn
parents:
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diff
changeset
|
1264 Method::name_and_sig_as_C_string(resolved_klass(), |
36b97be47bde
8011311: Private interface methods. Default conflicts:ICCE. no erased_super_default.
acorn
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diff
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|
1265 resolved_method->name(), |
36b97be47bde
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diff
changeset
|
1266 resolved_method->signature())); |
36b97be47bde
8011311: Private interface methods. Default conflicts:ICCE. no erased_super_default.
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changeset
|
1267 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); |
36b97be47bde
8011311: Private interface methods. Default conflicts:ICCE. no erased_super_default.
acorn
parents:
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|
1268 } |
36b97be47bde
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acorn
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diff
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|
1269 |
0 | 1270 // check if receiver klass implements the resolved interface |
1271 if (!recv_klass->is_subtype_of(resolved_klass())) { | |
3324
acf5e660c71a
6728025: LinkResolver is missing some ResourceMarks
jcoomes
parents:
2460
diff
changeset
|
1272 ResourceMark rm(THREAD); |
0 | 1273 char buf[200]; |
1274 jio_snprintf(buf, sizeof(buf), "Class %s does not implement the requested interface %s", | |
6983 | 1275 recv_klass()->external_name(), |
1276 resolved_klass()->external_name()); | |
0 | 1277 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); |
1278 } | |
1279 // do lookup based on receiver klass | |
1280 methodHandle sel_method; | |
1281 lookup_instance_method_in_klasses(sel_method, recv_klass, | |
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1972
diff
changeset
|
1282 resolved_method->name(), |
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1972
diff
changeset
|
1283 resolved_method->signature(), CHECK); |
12264
b2e698d2276c
8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation
drchase
parents:
10128
diff
changeset
|
1284 if (sel_method.is_null() && !check_null_and_abstract) { |
b2e698d2276c
8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation
drchase
parents:
10128
diff
changeset
|
1285 // In theory this is a harmless placeholder value, but |
b2e698d2276c
8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation
drchase
parents:
10128
diff
changeset
|
1286 // in practice leaving in null affects the nsk default method tests. |
b2e698d2276c
8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation
drchase
parents:
10128
diff
changeset
|
1287 // This needs further study. |
b2e698d2276c
8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation
drchase
parents:
10128
diff
changeset
|
1288 sel_method = resolved_method; |
b2e698d2276c
8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation
drchase
parents:
10128
diff
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|
1289 } |
0 | 1290 // check if method exists |
1291 if (sel_method.is_null()) { | |
1292 ResourceMark rm(THREAD); | |
1293 THROW_MSG(vmSymbols::java_lang_AbstractMethodError(), | |
6983 | 1294 Method::name_and_sig_as_C_string(recv_klass(), |
0 | 1295 resolved_method->name(), |
1296 resolved_method->signature())); | |
1297 } | |
10128
41ed397cc0cd
8006267: InterfaceMethod_ref should allow invokestatic and invokespecial
bharadwaj
parents:
9082
diff
changeset
|
1298 // check access |
12318
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8011311: Private interface methods. Default conflicts:ICCE. no erased_super_default.
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|
1299 // Throw Illegal Access Error if sel_method is not public. |
36b97be47bde
8011311: Private interface methods. Default conflicts:ICCE. no erased_super_default.
acorn
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diff
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|
1300 if (!sel_method->is_public()) { |
36b97be47bde
8011311: Private interface methods. Default conflicts:ICCE. no erased_super_default.
acorn
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diff
changeset
|
1301 ResourceMark rm(THREAD); |
36b97be47bde
8011311: Private interface methods. Default conflicts:ICCE. no erased_super_default.
acorn
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diff
changeset
|
1302 THROW_MSG(vmSymbols::java_lang_IllegalAccessError(), |
36b97be47bde
8011311: Private interface methods. Default conflicts:ICCE. no erased_super_default.
acorn
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diff
changeset
|
1303 Method::name_and_sig_as_C_string(recv_klass(), |
36b97be47bde
8011311: Private interface methods. Default conflicts:ICCE. no erased_super_default.
acorn
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diff
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|
1304 sel_method->name(), |
36b97be47bde
8011311: Private interface methods. Default conflicts:ICCE. no erased_super_default.
acorn
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changeset
|
1305 sel_method->signature())); |
10128
41ed397cc0cd
8006267: InterfaceMethod_ref should allow invokestatic and invokespecial
bharadwaj
parents:
9082
diff
changeset
|
1306 } |
0 | 1307 // check if abstract |
1308 if (check_null_and_abstract && sel_method->is_abstract()) { | |
1309 ResourceMark rm(THREAD); | |
1310 THROW_MSG(vmSymbols::java_lang_AbstractMethodError(), | |
6983 | 1311 Method::name_and_sig_as_C_string(recv_klass(), |
0 | 1312 sel_method->name(), |
1313 sel_method->signature())); | |
1314 } | |
12318
36b97be47bde
8011311: Private interface methods. Default conflicts:ICCE. no erased_super_default.
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diff
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|
1315 |
36b97be47bde
8011311: Private interface methods. Default conflicts:ICCE. no erased_super_default.
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diff
changeset
|
1316 if (TraceItables && Verbose) { |
36b97be47bde
8011311: Private interface methods. Default conflicts:ICCE. no erased_super_default.
acorn
parents:
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diff
changeset
|
1317 ResourceMark rm(THREAD); |
36b97be47bde
8011311: Private interface methods. Default conflicts:ICCE. no erased_super_default.
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diff
changeset
|
1318 tty->print("invokeinterface selected method: receiver-class:%s, resolved-class:%s, method:%s, method_holder:%s, access_flags: ", |
36b97be47bde
8011311: Private interface methods. Default conflicts:ICCE. no erased_super_default.
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diff
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|
1319 (recv_klass.is_null() ? "<NULL>" : recv_klass->internal_name()), |
36b97be47bde
8011311: Private interface methods. Default conflicts:ICCE. no erased_super_default.
acorn
parents:
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diff
changeset
|
1320 (resolved_klass.is_null() ? "<NULL>" : resolved_klass->internal_name()), |
36b97be47bde
8011311: Private interface methods. Default conflicts:ICCE. no erased_super_default.
acorn
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diff
changeset
|
1321 Method::name_and_sig_as_C_string(resolved_klass(), |
36b97be47bde
8011311: Private interface methods. Default conflicts:ICCE. no erased_super_default.
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diff
changeset
|
1322 resolved_method->name(), |
36b97be47bde
8011311: Private interface methods. Default conflicts:ICCE. no erased_super_default.
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parents:
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diff
changeset
|
1323 resolved_method->signature()), |
36b97be47bde
8011311: Private interface methods. Default conflicts:ICCE. no erased_super_default.
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diff
changeset
|
1324 sel_method->method_holder()->internal_name() |
36b97be47bde
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acorn
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diff
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|
1325 ); |
36b97be47bde
8011311: Private interface methods. Default conflicts:ICCE. no erased_super_default.
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changeset
|
1326 sel_method->access_flags().print_on(tty); |
12823
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8009130: Lambda: Fix access controls, loader constraints.
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diff
changeset
|
1327 if (sel_method->is_default_method()) { |
13055
fce21ac5968d
8027229: ICCE expected for >=2 maximally specific default methods.
acorn
parents:
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diff
changeset
|
1328 tty->print("default "); |
12318
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8011311: Private interface methods. Default conflicts:ICCE. no erased_super_default.
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diff
changeset
|
1329 } |
12823
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8009130: Lambda: Fix access controls, loader constraints.
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diff
changeset
|
1330 if (sel_method->is_overpass()) { |
12318
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8011311: Private interface methods. Default conflicts:ICCE. no erased_super_default.
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parents:
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diff
changeset
|
1331 tty->print("overpass"); |
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8011311: Private interface methods. Default conflicts:ICCE. no erased_super_default.
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diff
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|
1332 } |
36b97be47bde
8011311: Private interface methods. Default conflicts:ICCE. no erased_super_default.
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parents:
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diff
changeset
|
1333 tty->cr(); |
36b97be47bde
8011311: Private interface methods. Default conflicts:ICCE. no erased_super_default.
acorn
parents:
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diff
changeset
|
1334 } |
13055
fce21ac5968d
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diff
changeset
|
1335 // setup result |
fce21ac5968d
8027229: ICCE expected for >=2 maximally specific default methods.
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parents:
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diff
changeset
|
1336 if (!resolved_method->has_itable_index()) { |
fce21ac5968d
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diff
changeset
|
1337 int vtable_index = resolved_method->vtable_index(); |
fce21ac5968d
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diff
changeset
|
1338 assert(vtable_index == sel_method->vtable_index(), "sanity check"); |
fce21ac5968d
8027229: ICCE expected for >=2 maximally specific default methods.
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diff
changeset
|
1339 result.set_virtual(resolved_klass, recv_klass, resolved_method, sel_method, vtable_index, CHECK); |
fce21ac5968d
8027229: ICCE expected for >=2 maximally specific default methods.
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parents:
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diff
changeset
|
1340 } else { |
fce21ac5968d
8027229: ICCE expected for >=2 maximally specific default methods.
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parents:
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diff
changeset
|
1341 int itable_index = resolved_method()->itable_index(); |
fce21ac5968d
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acorn
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diff
changeset
|
1342 result.set_interface(resolved_klass, recv_klass, resolved_method, sel_method, itable_index, CHECK); |
fce21ac5968d
8027229: ICCE expected for >=2 maximally specific default methods.
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|
1343 } |
0 | 1344 } |
1345 | |
1346 | |
1347 methodHandle LinkResolver::linktime_resolve_interface_method_or_null( | |
1348 KlassHandle resolved_klass, | |
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1349 Symbol* method_name, |
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1350 Symbol* method_signature, |
0 | 1351 KlassHandle current_klass, |
1352 bool check_access) { | |
1353 EXCEPTION_MARK; | |
1354 methodHandle method_result; | |
1355 linktime_resolve_interface_method(method_result, resolved_klass, method_name, method_signature, current_klass, check_access, THREAD); | |
1356 if (HAS_PENDING_EXCEPTION) { | |
1357 CLEAR_PENDING_EXCEPTION; | |
1358 return methodHandle(); | |
1359 } else { | |
1360 return method_result; | |
1361 } | |
1362 } | |
1363 | |
1364 methodHandle LinkResolver::linktime_resolve_virtual_method_or_null( | |
1365 KlassHandle resolved_klass, | |
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1366 Symbol* method_name, |
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1367 Symbol* method_signature, |
0 | 1368 KlassHandle current_klass, |
1369 bool check_access) { | |
1370 EXCEPTION_MARK; | |
1371 methodHandle method_result; | |
1372 linktime_resolve_virtual_method(method_result, resolved_klass, method_name, method_signature, current_klass, check_access, THREAD); | |
1373 if (HAS_PENDING_EXCEPTION) { | |
1374 CLEAR_PENDING_EXCEPTION; | |
1375 return methodHandle(); | |
1376 } else { | |
1377 return method_result; | |
1378 } | |
1379 } | |
1380 | |
1381 methodHandle LinkResolver::resolve_virtual_call_or_null( | |
1382 KlassHandle receiver_klass, | |
1383 KlassHandle resolved_klass, | |
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1384 Symbol* name, |
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1385 Symbol* signature, |
0 | 1386 KlassHandle current_klass) { |
1387 EXCEPTION_MARK; | |
1388 CallInfo info; | |
1389 resolve_virtual_call(info, Handle(), receiver_klass, resolved_klass, name, signature, current_klass, true, false, THREAD); | |
1390 if (HAS_PENDING_EXCEPTION) { | |
1391 CLEAR_PENDING_EXCEPTION; | |
1392 return methodHandle(); | |
1393 } | |
1394 return info.selected_method(); | |
1395 } | |
1396 | |
1397 methodHandle LinkResolver::resolve_interface_call_or_null( | |
1398 KlassHandle receiver_klass, | |
1399 KlassHandle resolved_klass, | |
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1400 Symbol* name, |
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1401 Symbol* signature, |
0 | 1402 KlassHandle current_klass) { |
1403 EXCEPTION_MARK; | |
1404 CallInfo info; | |
1405 resolve_interface_call(info, Handle(), receiver_klass, resolved_klass, name, signature, current_klass, true, false, THREAD); | |
1406 if (HAS_PENDING_EXCEPTION) { | |
1407 CLEAR_PENDING_EXCEPTION; | |
1408 return methodHandle(); | |
1409 } | |
1410 return info.selected_method(); | |
1411 } | |
1412 | |
1413 int LinkResolver::resolve_virtual_vtable_index( | |
1414 KlassHandle receiver_klass, | |
1415 KlassHandle resolved_klass, | |
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1416 Symbol* name, |
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1417 Symbol* signature, |
0 | 1418 KlassHandle current_klass) { |
1419 EXCEPTION_MARK; | |
1420 CallInfo info; | |
1421 resolve_virtual_call(info, Handle(), receiver_klass, resolved_klass, name, signature, current_klass, true, false, THREAD); | |
1422 if (HAS_PENDING_EXCEPTION) { | |
1423 CLEAR_PENDING_EXCEPTION; | |
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1424 return Method::invalid_vtable_index; |
0 | 1425 } |
1426 return info.vtable_index(); | |
1427 } | |
1428 | |
1429 methodHandle LinkResolver::resolve_static_call_or_null( | |
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_static_call(info, resolved_klass, name, signature, current_klass, true, false, THREAD); | |
1437 if (HAS_PENDING_EXCEPTION) { | |
1438 CLEAR_PENDING_EXCEPTION; | |
1439 return methodHandle(); | |
1440 } | |
1441 return info.selected_method(); | |
1442 } | |
1443 | |
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1444 methodHandle LinkResolver::resolve_special_call_or_null(KlassHandle resolved_klass, Symbol* name, Symbol* signature, |
0 | 1445 KlassHandle current_klass) { |
1446 EXCEPTION_MARK; | |
1447 CallInfo info; | |
1448 resolve_special_call(info, resolved_klass, name, signature, current_klass, true, THREAD); | |
1449 if (HAS_PENDING_EXCEPTION) { | |
1450 CLEAR_PENDING_EXCEPTION; | |
1451 return methodHandle(); | |
1452 } | |
1453 return info.selected_method(); | |
1454 } | |
1455 | |
1456 | |
1457 | |
1458 //------------------------------------------------------------------------------------------------------------------------ | |
1459 // ConstantPool entries | |
1460 | |
1461 void LinkResolver::resolve_invoke(CallInfo& result, Handle recv, constantPoolHandle pool, int index, Bytecodes::Code byte, TRAPS) { | |
1462 switch (byte) { | |
1463 case Bytecodes::_invokestatic : resolve_invokestatic (result, pool, index, CHECK); break; | |
1464 case Bytecodes::_invokespecial : resolve_invokespecial (result, pool, index, CHECK); break; | |
1465 case Bytecodes::_invokevirtual : resolve_invokevirtual (result, recv, pool, index, CHECK); break; | |
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1466 case Bytecodes::_invokehandle : resolve_invokehandle (result, pool, index, CHECK); break; |
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1467 case Bytecodes::_invokedynamic : resolve_invokedynamic (result, pool, index, CHECK); break; |
0 | 1468 case Bytecodes::_invokeinterface: resolve_invokeinterface(result, recv, pool, index, CHECK); break; |
1469 } | |
1470 return; | |
1471 } | |
1472 | |
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1473 void LinkResolver::resolve_pool(KlassHandle& resolved_klass, Symbol*& method_name, Symbol*& method_signature, |
0 | 1474 KlassHandle& current_klass, constantPoolHandle pool, int index, TRAPS) { |
1475 // resolve klass | |
1476 resolve_klass(resolved_klass, pool, index, CHECK); | |
1477 | |
1478 // Get name, signature, and static klass | |
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1479 method_name = pool->name_ref_at(index); |
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1480 method_signature = pool->signature_ref_at(index); |
0 | 1481 current_klass = KlassHandle(THREAD, pool->pool_holder()); |
1482 } | |
1483 | |
1484 | |
1485 void LinkResolver::resolve_invokestatic(CallInfo& result, constantPoolHandle pool, int index, TRAPS) { | |
1486 KlassHandle resolved_klass; | |
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1487 Symbol* method_name = NULL; |
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1488 Symbol* method_signature = NULL; |
0 | 1489 KlassHandle current_klass; |
1490 resolve_pool(resolved_klass, method_name, method_signature, current_klass, pool, index, CHECK); | |
1491 resolve_static_call(result, resolved_klass, method_name, method_signature, current_klass, true, true, CHECK); | |
1492 } | |
1493 | |
1494 | |
1495 void LinkResolver::resolve_invokespecial(CallInfo& result, constantPoolHandle pool, int index, TRAPS) { | |
1496 KlassHandle resolved_klass; | |
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1497 Symbol* method_name = NULL; |
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1498 Symbol* method_signature = NULL; |
0 | 1499 KlassHandle current_klass; |
1500 resolve_pool(resolved_klass, method_name, method_signature, current_klass, pool, index, CHECK); | |
1501 resolve_special_call(result, resolved_klass, method_name, method_signature, current_klass, true, CHECK); | |
1502 } | |
1503 | |
1504 | |
1505 void LinkResolver::resolve_invokevirtual(CallInfo& result, Handle recv, | |
1506 constantPoolHandle pool, int index, | |
1507 TRAPS) { | |
1508 | |
1509 KlassHandle resolved_klass; | |
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1510 Symbol* method_name = NULL; |
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1511 Symbol* method_signature = NULL; |
0 | 1512 KlassHandle current_klass; |
1513 resolve_pool(resolved_klass, method_name, method_signature, current_klass, pool, index, CHECK); | |
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1514 KlassHandle recvrKlass (THREAD, recv.is_null() ? (Klass*)NULL : recv->klass()); |
0 | 1515 resolve_virtual_call(result, recv, recvrKlass, resolved_klass, method_name, method_signature, current_klass, true, true, CHECK); |
1516 } | |
1517 | |
1518 | |
1519 void LinkResolver::resolve_invokeinterface(CallInfo& result, Handle recv, constantPoolHandle pool, int index, TRAPS) { | |
1520 KlassHandle resolved_klass; | |
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1521 Symbol* method_name = NULL; |
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1522 Symbol* method_signature = NULL; |
0 | 1523 KlassHandle current_klass; |
1524 resolve_pool(resolved_klass, method_name, method_signature, current_klass, pool, index, CHECK); | |
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1525 KlassHandle recvrKlass (THREAD, recv.is_null() ? (Klass*)NULL : recv->klass()); |
0 | 1526 resolve_interface_call(result, recv, recvrKlass, resolved_klass, method_name, method_signature, current_klass, true, true, CHECK); |
1527 } | |
1528 | |
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1529 |
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1530 void LinkResolver::resolve_invokehandle(CallInfo& result, constantPoolHandle pool, int index, TRAPS) { |
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1531 assert(EnableInvokeDynamic, ""); |
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1532 // This guy is reached from InterpreterRuntime::resolve_invokehandle. |
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1533 KlassHandle resolved_klass; |
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1534 Symbol* method_name = NULL; |
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1535 Symbol* method_signature = NULL; |
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1536 KlassHandle current_klass; |
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1537 resolve_pool(resolved_klass, method_name, method_signature, current_klass, pool, index, CHECK); |
9082 | 1538 if (TraceMethodHandles) { |
1539 ResourceMark rm(THREAD); | |
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1540 tty->print_cr("resolve_invokehandle %s %s", method_name->as_C_string(), method_signature->as_C_string()); |
9082 | 1541 } |
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1542 resolve_handle_call(result, resolved_klass, method_name, method_signature, current_klass, CHECK); |
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1543 } |
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1544 |
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1545 void LinkResolver::resolve_handle_call(CallInfo& result, KlassHandle resolved_klass, |
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1546 Symbol* method_name, Symbol* method_signature, |
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1547 KlassHandle current_klass, |
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1548 TRAPS) { |
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1549 // JSR 292: this must be an implicitly generated method MethodHandle.invokeExact(*...) or similar |
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1550 assert(resolved_klass() == SystemDictionary::MethodHandle_klass(), ""); |
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1551 assert(MethodHandles::is_signature_polymorphic_name(method_name), ""); |
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1552 methodHandle resolved_method; |
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1553 Handle resolved_appendix; |
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1554 Handle resolved_method_type; |
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1555 lookup_polymorphic_method(resolved_method, resolved_klass, |
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1556 method_name, method_signature, |
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1557 current_klass, &resolved_appendix, &resolved_method_type, CHECK); |
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1558 result.set_handle(resolved_method, resolved_appendix, resolved_method_type, CHECK); |
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1559 } |
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1560 |
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1561 |
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1562 void LinkResolver::resolve_invokedynamic(CallInfo& result, constantPoolHandle pool, int index, TRAPS) { |
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1563 assert(EnableInvokeDynamic, ""); |
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1564 |
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1565 //resolve_pool(<resolved_klass>, method_name, method_signature, current_klass, pool, index, CHECK); |
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1566 Symbol* method_name = pool->name_ref_at(index); |
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1567 Symbol* method_signature = pool->signature_ref_at(index); |
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1568 KlassHandle current_klass = KlassHandle(THREAD, pool->pool_holder()); |
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1569 |
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1570 // Resolve the bootstrap specifier (BSM + optional arguments). |
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1571 Handle bootstrap_specifier; |
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1572 // Check if CallSite has been bound already: |
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1573 ConstantPoolCacheEntry* cpce = pool->invokedynamic_cp_cache_entry_at(index); |
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1574 if (cpce->is_f1_null()) { |
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1575 int pool_index = cpce->constant_pool_index(); |
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1576 oop bsm_info = pool->resolve_bootstrap_specifier_at(pool_index, CHECK); |
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1577 assert(bsm_info != NULL, ""); |
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1578 // FIXME: Cache this once per BootstrapMethods entry, not once per CONSTANT_InvokeDynamic. |
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1579 bootstrap_specifier = Handle(THREAD, bsm_info); |
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1580 } |
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1581 if (!cpce->is_f1_null()) { |
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1582 methodHandle method( THREAD, cpce->f1_as_method()); |
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1583 Handle appendix( THREAD, cpce->appendix_if_resolved(pool)); |
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1584 Handle method_type(THREAD, cpce->method_type_if_resolved(pool)); |
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1585 result.set_handle(method, appendix, method_type, CHECK); |
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1586 return; |
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1587 } |
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1588 |
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1589 if (TraceMethodHandles) { |
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1590 ResourceMark rm(THREAD); |
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1591 tty->print_cr("resolve_invokedynamic #%d %s %s", |
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1592 ConstantPool::decode_invokedynamic_index(index), |
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1593 method_name->as_C_string(), method_signature->as_C_string()); |
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1594 tty->print(" BSM info: "); bootstrap_specifier->print(); |
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1595 } |
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1596 |
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1597 resolve_dynamic_call(result, bootstrap_specifier, method_name, method_signature, current_klass, CHECK); |
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1598 } |
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1599 |
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1600 void LinkResolver::resolve_dynamic_call(CallInfo& result, |
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1601 Handle bootstrap_specifier, |
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1602 Symbol* method_name, Symbol* method_signature, |
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1603 KlassHandle current_klass, |
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1604 TRAPS) { |
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1605 // JSR 292: this must resolve to an implicitly generated method MH.linkToCallSite(*...) |
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1606 // The appendix argument is likely to be a freshly-created CallSite. |
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1607 Handle resolved_appendix; |
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1608 Handle resolved_method_type; |
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1609 methodHandle resolved_method = |
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1610 SystemDictionary::find_dynamic_call_site_invoker(current_klass, |
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1611 bootstrap_specifier, |
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1612 method_name, method_signature, |
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1613 &resolved_appendix, |
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1614 &resolved_method_type, |
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1615 THREAD); |
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1616 if (HAS_PENDING_EXCEPTION) { |
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1617 if (TraceMethodHandles) { |
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1618 tty->print_cr("invokedynamic throws BSME for "INTPTR_FORMAT, (void *)PENDING_EXCEPTION); |
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1619 PENDING_EXCEPTION->print(); |
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1620 } |
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1621 if (PENDING_EXCEPTION->is_a(SystemDictionary::BootstrapMethodError_klass())) { |
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1622 // throw these guys, since they are already wrapped |
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1623 return; |
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1624 } |
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1625 if (!PENDING_EXCEPTION->is_a(SystemDictionary::LinkageError_klass())) { |
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1626 // intercept only LinkageErrors which might have failed to wrap |
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1627 return; |
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1628 } |
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1629 // See the "Linking Exceptions" section for the invokedynamic instruction in the JVMS. |
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1630 Handle nested_exception(THREAD, PENDING_EXCEPTION); |
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1631 CLEAR_PENDING_EXCEPTION; |
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1632 THROW_CAUSE(vmSymbols::java_lang_BootstrapMethodError(), nested_exception) |
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1633 } |
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1634 result.set_handle(resolved_method, resolved_appendix, resolved_method_type, CHECK); |
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1635 } |
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1636 |
0 | 1637 //------------------------------------------------------------------------------------------------------------------------ |
1638 #ifndef PRODUCT | |
1639 | |
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1640 void CallInfo::print() { |
0 | 1641 ResourceMark rm; |
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1642 const char* kindstr = "unknown"; |
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1643 switch (_call_kind) { |
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1644 case direct_call: kindstr = "direct"; break; |
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1645 case vtable_call: kindstr = "vtable"; break; |
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1646 case itable_call: kindstr = "itable"; break; |
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1647 } |
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1648 tty->print_cr("Call %s@%d %s", kindstr, _call_index, |
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1649 _resolved_method.is_null() ? "(none)" : _resolved_method->name_and_sig_as_C_string()); |
0 | 1650 } |
1651 | |
1652 #endif |