Mercurial > hg > graal-compiler
annotate src/share/vm/interpreter/linkResolver.cpp @ 20619:b12a2a9b05ca
8056240: Investigate increased GC remark time after class unloading changes in CRM Fuse
Reviewed-by: mgerdin, coleenp, bdelsart
author | stefank |
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date | Thu, 02 Oct 2014 10:55:36 +0200 |
parents | 54bc75c144b0 |
children | eaf39a954227 9906d432d6db |
rev | line source |
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0 | 1 /* |
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2 * Copyright (c) 1997, 2014, Oracle and/or its affiliates. All rights reserved. |
0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
4 * | |
5 * This code is free software; you can redistribute it and/or modify it | |
6 * under the terms of the GNU General Public License version 2 only, as | |
7 * published by the Free Software Foundation. | |
8 * | |
9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
12 * version 2 for more details (a copy is included in the LICENSE file that | |
13 * accompanied this code). | |
14 * | |
15 * You should have received a copy of the GNU General Public License version | |
16 * 2 along with this work; if not, write to the Free Software Foundation, | |
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
18 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
1972 | 25 #include "precompiled.hpp" |
6934 | 26 #include "classfile/defaultMethods.hpp" |
1972 | 27 #include "classfile/systemDictionary.hpp" |
28 #include "classfile/vmSymbols.hpp" | |
29 #include "compiler/compileBroker.hpp" | |
30 #include "gc_interface/collectedHeap.inline.hpp" | |
31 #include "interpreter/bytecode.hpp" | |
32 #include "interpreter/interpreterRuntime.hpp" | |
33 #include "interpreter/linkResolver.hpp" | |
34 #include "memory/resourceArea.hpp" | |
35 #include "memory/universe.inline.hpp" | |
36 #include "oops/instanceKlass.hpp" | |
37 #include "oops/objArrayOop.hpp" | |
38 #include "prims/methodHandles.hpp" | |
39 #include "prims/nativeLookup.hpp" | |
40 #include "runtime/compilationPolicy.hpp" | |
41 #include "runtime/fieldDescriptor.hpp" | |
42 #include "runtime/frame.inline.hpp" | |
43 #include "runtime/handles.inline.hpp" | |
44 #include "runtime/reflection.hpp" | |
45 #include "runtime/signature.hpp" | |
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46 #include "runtime/thread.inline.hpp" |
1972 | 47 #include "runtime/vmThread.hpp" |
0 | 48 |
49 | |
50 //------------------------------------------------------------------------------------------------------------------------ | |
51 // Implementation of CallInfo | |
52 | |
53 | |
54 void CallInfo::set_static(KlassHandle resolved_klass, methodHandle resolved_method, TRAPS) { | |
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55 int vtable_index = Method::nonvirtual_vtable_index; |
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56 set_common(resolved_klass, resolved_klass, resolved_method, resolved_method, CallInfo::direct_call, vtable_index, CHECK); |
0 | 57 } |
58 | |
59 | |
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60 void CallInfo::set_interface(KlassHandle resolved_klass, KlassHandle selected_klass, methodHandle resolved_method, methodHandle selected_method, int itable_index, TRAPS) { |
0 | 61 // This is only called for interface methods. If the resolved_method |
62 // comes from java/lang/Object, it can be the subject of a virtual call, so | |
63 // we should pick the vtable index from the resolved method. | |
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64 // In that case, the caller must call set_virtual instead of set_interface. |
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65 assert(resolved_method->method_holder()->is_interface(), ""); |
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66 assert(itable_index == resolved_method()->itable_index(), ""); |
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67 set_common(resolved_klass, selected_klass, resolved_method, selected_method, CallInfo::itable_call, itable_index, CHECK); |
0 | 68 } |
69 | |
70 void CallInfo::set_virtual(KlassHandle resolved_klass, KlassHandle selected_klass, methodHandle resolved_method, methodHandle selected_method, int vtable_index, TRAPS) { | |
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71 assert(vtable_index >= 0 || vtable_index == Method::nonvirtual_vtable_index, "valid index"); |
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72 assert(vtable_index < 0 || !resolved_method->has_vtable_index() || vtable_index == resolved_method->vtable_index(), ""); |
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73 CallKind kind = (vtable_index >= 0 && !resolved_method->can_be_statically_bound() ? CallInfo::vtable_call : CallInfo::direct_call); |
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74 set_common(resolved_klass, selected_klass, resolved_method, selected_method, kind, vtable_index, CHECK); |
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75 assert(!resolved_method->is_compiled_lambda_form(), "these must be handled via an invokehandle call"); |
0 | 76 } |
77 | |
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78 void CallInfo::set_handle(methodHandle resolved_method, Handle resolved_appendix, Handle resolved_method_type, TRAPS) { |
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79 if (resolved_method.is_null()) { |
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80 THROW_MSG(vmSymbols::java_lang_InternalError(), "resolved method is null"); |
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81 } |
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82 KlassHandle resolved_klass = SystemDictionary::MethodHandle_klass(); |
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83 assert(resolved_method->intrinsic_id() == vmIntrinsics::_invokeBasic || |
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84 resolved_method->is_compiled_lambda_form(), |
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85 "linkMethod must return one of these"); |
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86 int vtable_index = Method::nonvirtual_vtable_index; |
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87 assert(!resolved_method->has_vtable_index(), ""); |
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88 set_common(resolved_klass, resolved_klass, resolved_method, resolved_method, CallInfo::direct_call, vtable_index, CHECK); |
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89 _resolved_appendix = resolved_appendix; |
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90 _resolved_method_type = resolved_method_type; |
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91 } |
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92 |
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93 void CallInfo::set_common(KlassHandle resolved_klass, |
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94 KlassHandle selected_klass, |
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95 methodHandle resolved_method, |
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96 methodHandle selected_method, |
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97 CallKind kind, |
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98 int index, |
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99 TRAPS) { |
0 | 100 assert(resolved_method->signature() == selected_method->signature(), "signatures must correspond"); |
101 _resolved_klass = resolved_klass; | |
102 _selected_klass = selected_klass; | |
103 _resolved_method = resolved_method; | |
104 _selected_method = selected_method; | |
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105 _call_kind = kind; |
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106 _call_index = index; |
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107 _resolved_appendix = Handle(); |
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108 DEBUG_ONLY(verify()); // verify before making side effects |
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109 |
1783 | 110 if (CompilationPolicy::must_be_compiled(selected_method)) { |
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111 // This path is unusual, mostly used by the '-Xcomp' stress test mode. |
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112 |
1783 | 113 // Note: with several active threads, the must_be_compiled may be true |
114 // while can_be_compiled is false; remove assert | |
115 // assert(CompilationPolicy::can_be_compiled(selected_method), "cannot compile"); | |
0 | 116 if (THREAD->is_Compiler_thread()) { |
117 // don't force compilation, resolve was on behalf of compiler | |
118 return; | |
119 } | |
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120 if (selected_method->method_holder()->is_not_initialized()) { |
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121 // 'is_not_initialized' means not only '!is_initialized', but also that |
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122 // initialization has not been started yet ('!being_initialized') |
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123 // Do not force compilation of methods in uninitialized classes. |
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124 // Note that doing this would throw an assert later, |
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125 // in CompileBroker::compile_method. |
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126 // We sometimes use the link resolver to do reflective lookups |
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127 // even before classes are initialized. |
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128 return; |
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129 } |
0 | 130 CompileBroker::compile_method(selected_method, InvocationEntryBci, |
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131 CompilationPolicy::policy()->initial_compile_level(), |
1783 | 132 methodHandle(), 0, "must_be_compiled", CHECK); |
0 | 133 } |
134 } | |
135 | |
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136 // utility query for unreflecting a method |
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137 CallInfo::CallInfo(Method* resolved_method, Klass* resolved_klass) { |
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138 Klass* resolved_method_holder = resolved_method->method_holder(); |
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139 if (resolved_klass == NULL) { // 2nd argument defaults to holder of 1st |
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140 resolved_klass = resolved_method_holder; |
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141 } |
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142 _resolved_klass = resolved_klass; |
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143 _selected_klass = resolved_klass; |
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144 _resolved_method = resolved_method; |
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145 _selected_method = resolved_method; |
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146 // classify: |
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147 CallKind kind = CallInfo::unknown_kind; |
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148 int index = resolved_method->vtable_index(); |
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149 if (resolved_method->can_be_statically_bound()) { |
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150 kind = CallInfo::direct_call; |
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151 } else if (!resolved_method_holder->is_interface()) { |
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152 // Could be an Object method inherited into an interface, but still a vtable call. |
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153 kind = CallInfo::vtable_call; |
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154 } else if (!resolved_klass->is_interface()) { |
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155 // A default or miranda method. Compute the vtable index. |
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156 ResourceMark rm; |
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157 klassVtable* vt = InstanceKlass::cast(resolved_klass)->vtable(); |
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158 index = LinkResolver::vtable_index_of_interface_method(resolved_klass, |
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159 resolved_method); |
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160 assert(index >= 0 , "we should have valid vtable index at this point"); |
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161 |
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162 kind = CallInfo::vtable_call; |
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163 } else if (resolved_method->has_vtable_index()) { |
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164 // Can occur if an interface redeclares a method of Object. |
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165 |
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166 #ifdef ASSERT |
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167 // Ensure that this is really the case. |
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168 KlassHandle object_klass = SystemDictionary::Object_klass(); |
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169 Method * object_resolved_method = object_klass()->vtable()->method_at(index); |
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170 assert(object_resolved_method->name() == resolved_method->name(), |
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171 err_msg("Object and interface method names should match at vtable index %d, %s != %s", |
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172 index, object_resolved_method->name()->as_C_string(), resolved_method->name()->as_C_string())); |
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173 assert(object_resolved_method->signature() == resolved_method->signature(), |
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174 err_msg("Object and interface method signatures should match at vtable index %d, %s != %s", |
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175 index, object_resolved_method->signature()->as_C_string(), resolved_method->signature()->as_C_string())); |
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176 #endif // ASSERT |
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177 |
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178 kind = CallInfo::vtable_call; |
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179 } else { |
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180 // A regular interface call. |
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181 kind = CallInfo::itable_call; |
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182 index = resolved_method->itable_index(); |
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183 } |
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184 assert(index == Method::nonvirtual_vtable_index || index >= 0, err_msg("bad index %d", index)); |
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185 _call_kind = kind; |
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186 _call_index = index; |
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187 _resolved_appendix = Handle(); |
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188 DEBUG_ONLY(verify()); |
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189 } |
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190 |
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191 #ifdef ASSERT |
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192 void CallInfo::verify() { |
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193 switch (call_kind()) { // the meaning and allowed value of index depends on kind |
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194 case CallInfo::direct_call: |
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195 if (_call_index == Method::nonvirtual_vtable_index) break; |
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196 // else fall through to check vtable index: |
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197 case CallInfo::vtable_call: |
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198 assert(resolved_klass()->verify_vtable_index(_call_index), ""); |
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199 break; |
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200 case CallInfo::itable_call: |
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201 assert(resolved_method()->method_holder()->verify_itable_index(_call_index), ""); |
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202 break; |
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203 case CallInfo::unknown_kind: |
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204 assert(call_kind() != CallInfo::unknown_kind, "CallInfo must be set"); |
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205 break; |
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206 default: |
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207 fatal(err_msg_res("Unexpected call kind %d", call_kind())); |
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208 } |
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209 } |
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210 #endif //ASSERT |
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211 |
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212 |
0 | 213 |
214 //------------------------------------------------------------------------------------------------------------------------ | |
215 // Klass resolution | |
216 | |
217 void LinkResolver::check_klass_accessability(KlassHandle ref_klass, KlassHandle sel_klass, TRAPS) { | |
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218 if (!Reflection::verify_class_access(ref_klass(), |
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219 sel_klass(), |
0 | 220 true)) { |
221 ResourceMark rm(THREAD); | |
222 Exceptions::fthrow( | |
223 THREAD_AND_LOCATION, | |
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224 vmSymbols::java_lang_IllegalAccessError(), |
0 | 225 "tried to access class %s from class %s", |
226 sel_klass->external_name(), | |
227 ref_klass->external_name() | |
228 ); | |
229 return; | |
230 } | |
231 } | |
232 | |
233 void LinkResolver::resolve_klass(KlassHandle& result, constantPoolHandle pool, int index, TRAPS) { | |
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234 Klass* result_oop = pool->klass_ref_at(index, CHECK); |
0 | 235 result = KlassHandle(THREAD, result_oop); |
236 } | |
237 | |
238 //------------------------------------------------------------------------------------------------------------------------ | |
239 // Method resolution | |
240 // | |
241 // According to JVM spec. $5.4.3c & $5.4.3d | |
242 | |
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243 // Look up method in klasses, including static methods |
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244 // Then look up local default methods |
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245 void LinkResolver::lookup_method_in_klasses(methodHandle& result, KlassHandle klass, Symbol* name, Symbol* signature, bool checkpolymorphism, bool in_imethod_resolve, TRAPS) { |
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246 // Ignore overpasses so statics can be found during resolution |
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247 Method* result_oop = klass->uncached_lookup_method(name, signature, Klass::skip_overpass); |
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248 |
18046 | 249 if (klass->oop_is_array()) { |
250 // Only consider klass and super klass for arrays | |
251 result = methodHandle(THREAD, result_oop); | |
252 return; | |
253 } | |
254 | |
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255 // JDK 8, JVMS 5.4.3.4: Interface method resolution should |
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256 // ignore static and non-public methods of java.lang.Object, |
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257 // like clone, finalize, registerNatives. |
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258 if (in_imethod_resolve && |
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259 result_oop != NULL && |
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260 klass->is_interface() && |
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261 (result_oop->is_static() || !result_oop->is_public()) && |
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262 result_oop->method_holder() == SystemDictionary::Object_klass()) { |
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263 result_oop = NULL; |
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264 } |
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265 |
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266 // Before considering default methods, check for an overpass in the |
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267 // current class if a method has not been found. |
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268 if (result_oop == NULL) { |
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269 result_oop = InstanceKlass::cast(klass())->find_method(name, signature); |
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270 } |
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271 |
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272 if (result_oop == NULL) { |
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273 Array<Method*>* default_methods = InstanceKlass::cast(klass())->default_methods(); |
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274 if (default_methods != NULL) { |
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275 result_oop = InstanceKlass::find_method(default_methods, name, signature); |
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276 } |
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277 } |
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278 |
13413 | 279 if (checkpolymorphism && EnableInvokeDynamic && result_oop != NULL) { |
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280 vmIntrinsics::ID iid = result_oop->intrinsic_id(); |
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281 if (MethodHandles::is_signature_polymorphic(iid)) { |
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282 // Do not link directly to these. The VM must produce a synthetic one using lookup_polymorphic_method. |
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283 return; |
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284 } |
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285 } |
0 | 286 result = methodHandle(THREAD, result_oop); |
287 } | |
288 | |
289 // returns first instance method | |
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290 // Looks up method in classes, then looks up local default methods |
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291 void LinkResolver::lookup_instance_method_in_klasses(methodHandle& result, KlassHandle klass, Symbol* name, Symbol* signature, TRAPS) { |
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292 Method* result_oop = klass->uncached_lookup_method(name, signature, Klass::normal); |
0 | 293 result = methodHandle(THREAD, result_oop); |
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294 while (!result.is_null() && result->is_static() && result->method_holder()->super() != NULL) { |
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295 KlassHandle super_klass = KlassHandle(THREAD, result->method_holder()->super()); |
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296 result = methodHandle(THREAD, super_klass->uncached_lookup_method(name, signature, Klass::normal)); |
0 | 297 } |
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298 |
18046 | 299 if (klass->oop_is_array()) { |
300 // Only consider klass and super klass for arrays | |
301 return; | |
302 } | |
303 | |
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304 if (result.is_null()) { |
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305 Array<Method*>* default_methods = InstanceKlass::cast(klass())->default_methods(); |
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306 if (default_methods != NULL) { |
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307 result = methodHandle(InstanceKlass::find_method(default_methods, name, signature)); |
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308 assert(result.is_null() || !result->is_static(), "static defaults not allowed"); |
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309 } |
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310 } |
0 | 311 } |
312 | |
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313 int LinkResolver::vtable_index_of_interface_method(KlassHandle klass, |
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314 methodHandle resolved_method) { |
0 | 315 |
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316 int vtable_index = Method::invalid_vtable_index; |
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317 Symbol* name = resolved_method->name(); |
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318 Symbol* signature = resolved_method->signature(); |
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319 |
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320 // First check in default method array |
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321 if (!resolved_method->is_abstract() && |
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322 (InstanceKlass::cast(klass())->default_methods() != NULL)) { |
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323 int index = InstanceKlass::find_method_index(InstanceKlass::cast(klass())->default_methods(), name, signature, false); |
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324 if (index >= 0 ) { |
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325 vtable_index = InstanceKlass::cast(klass())->default_vtable_indices()->at(index); |
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326 } |
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327 } |
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328 if (vtable_index == Method::invalid_vtable_index) { |
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329 // get vtable_index for miranda methods |
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330 ResourceMark rm; |
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331 klassVtable *vt = InstanceKlass::cast(klass())->vtable(); |
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332 vtable_index = vt->index_of_miranda(name, signature); |
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333 } |
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334 return vtable_index; |
0 | 335 } |
336 | |
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337 void LinkResolver::lookup_method_in_interfaces(methodHandle& result, KlassHandle klass, Symbol* name, Symbol* signature, TRAPS) { |
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338 InstanceKlass *ik = InstanceKlass::cast(klass()); |
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339 |
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340 // Specify 'true' in order to skip default methods when searching the |
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341 // interfaces. Function lookup_method_in_klasses() already looked for |
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342 // the method in the default methods table. |
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343 result = methodHandle(THREAD, ik->lookup_method_in_all_interfaces(name, signature, Klass::skip_defaults)); |
0 | 344 } |
345 | |
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346 void LinkResolver::lookup_polymorphic_method(methodHandle& result, |
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347 KlassHandle klass, Symbol* name, Symbol* full_signature, |
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348 KlassHandle current_klass, |
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349 Handle *appendix_result_or_null, |
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350 Handle *method_type_result, |
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351 TRAPS) { |
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352 vmIntrinsics::ID iid = MethodHandles::signature_polymorphic_name_id(name); |
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353 if (TraceMethodHandles) { |
9082 | 354 ResourceMark rm(THREAD); |
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355 tty->print_cr("lookup_polymorphic_method iid=%s %s.%s%s", |
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356 vmIntrinsics::name_at(iid), klass->external_name(), |
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357 name->as_C_string(), full_signature->as_C_string()); |
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358 } |
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359 if (EnableInvokeDynamic && |
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360 klass() == SystemDictionary::MethodHandle_klass() && |
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361 iid != vmIntrinsics::_none) { |
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362 if (MethodHandles::is_signature_polymorphic_intrinsic(iid)) { |
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363 // Most of these do not need an up-call to Java to resolve, so can be done anywhere. |
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364 // Do not erase last argument type (MemberName) if it is a static linkTo method. |
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365 bool keep_last_arg = MethodHandles::is_signature_polymorphic_static(iid); |
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366 TempNewSymbol basic_signature = |
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367 MethodHandles::lookup_basic_type_signature(full_signature, keep_last_arg, CHECK); |
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368 if (TraceMethodHandles) { |
9082 | 369 ResourceMark rm(THREAD); |
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370 tty->print_cr("lookup_polymorphic_method %s %s => basic %s", |
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371 name->as_C_string(), |
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372 full_signature->as_C_string(), |
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373 basic_signature->as_C_string()); |
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374 } |
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375 result = SystemDictionary::find_method_handle_intrinsic(iid, |
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376 basic_signature, |
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377 CHECK); |
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378 if (result.not_null()) { |
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379 assert(result->is_method_handle_intrinsic(), "MH.invokeBasic or MH.linkTo* intrinsic"); |
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380 assert(result->intrinsic_id() != vmIntrinsics::_invokeGeneric, "wrong place to find this"); |
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381 assert(basic_signature == result->signature(), "predict the result signature"); |
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382 if (TraceMethodHandles) { |
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383 tty->print("lookup_polymorphic_method => intrinsic "); |
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384 result->print_on(tty); |
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385 } |
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386 return; |
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387 } |
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388 } else if (iid == vmIntrinsics::_invokeGeneric |
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389 && !THREAD->is_Compiler_thread() |
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390 && appendix_result_or_null != NULL) { |
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391 // This is a method with type-checking semantics. |
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392 // We will ask Java code to spin an adapter method for it. |
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393 if (!MethodHandles::enabled()) { |
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394 // Make sure the Java part of the runtime has been booted up. |
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395 Klass* natives = SystemDictionary::MethodHandleNatives_klass(); |
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396 if (natives == NULL || InstanceKlass::cast(natives)->is_not_initialized()) { |
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397 SystemDictionary::resolve_or_fail(vmSymbols::java_lang_invoke_MethodHandleNatives(), |
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398 Handle(), |
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399 Handle(), |
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400 true, |
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401 CHECK); |
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402 } |
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403 } |
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404 |
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405 Handle appendix; |
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406 Handle method_type; |
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407 result = SystemDictionary::find_method_handle_invoker(name, |
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408 full_signature, |
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409 current_klass, |
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410 &appendix, |
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411 &method_type, |
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412 CHECK); |
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413 if (TraceMethodHandles) { |
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414 tty->print("lookup_polymorphic_method => (via Java) "); |
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415 result->print_on(tty); |
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416 tty->print(" lookup_polymorphic_method => appendix = "); |
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417 if (appendix.is_null()) tty->print_cr("(none)"); |
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418 else appendix->print_on(tty); |
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419 } |
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420 if (result.not_null()) { |
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421 #ifdef ASSERT |
9082 | 422 ResourceMark rm(THREAD); |
423 | |
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424 TempNewSymbol basic_signature = |
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425 MethodHandles::lookup_basic_type_signature(full_signature, CHECK); |
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426 int actual_size_of_params = result->size_of_parameters(); |
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427 int expected_size_of_params = ArgumentSizeComputer(basic_signature).size(); |
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428 // +1 for MethodHandle.this, +1 for trailing MethodType |
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429 if (!MethodHandles::is_signature_polymorphic_static(iid)) expected_size_of_params += 1; |
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430 if (appendix.not_null()) expected_size_of_params += 1; |
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431 if (actual_size_of_params != expected_size_of_params) { |
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432 tty->print_cr("*** basic_signature=%s", basic_signature->as_C_string()); |
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433 tty->print_cr("*** result for %s: ", vmIntrinsics::name_at(iid)); |
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434 result->print(); |
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435 } |
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436 assert(actual_size_of_params == expected_size_of_params, |
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437 err_msg("%d != %d", actual_size_of_params, expected_size_of_params)); |
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438 #endif //ASSERT |
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439 |
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440 assert(appendix_result_or_null != NULL, ""); |
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441 (*appendix_result_or_null) = appendix; |
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442 (*method_type_result) = method_type; |
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443 return; |
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444 } |
710 | 445 } |
446 } | |
447 } | |
448 | |
0 | 449 void LinkResolver::check_method_accessability(KlassHandle ref_klass, |
450 KlassHandle resolved_klass, | |
451 KlassHandle sel_klass, | |
452 methodHandle sel_method, | |
453 TRAPS) { | |
454 | |
455 AccessFlags flags = sel_method->access_flags(); | |
456 | |
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457 // Special case: arrays always override "clone". JVMS 2.15. |
0 | 458 // If the resolved klass is an array class, and the declaring class |
459 // is java.lang.Object and the method is "clone", set the flags | |
460 // to public. | |
461 // | |
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462 // We'll check for the method name first, as that's most likely |
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463 // to be false (so we'll short-circuit out of these tests). |
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464 if (sel_method->name() == vmSymbols::clone_name() && |
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465 sel_klass() == SystemDictionary::Object_klass() && |
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466 resolved_klass->oop_is_array()) { |
0 | 467 // We need to change "protected" to "public". |
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468 assert(flags.is_protected(), "clone not protected?"); |
0 | 469 jint new_flags = flags.as_int(); |
470 new_flags = new_flags & (~JVM_ACC_PROTECTED); | |
471 new_flags = new_flags | JVM_ACC_PUBLIC; | |
472 flags.set_flags(new_flags); | |
473 } | |
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474 // assert(extra_arg_result_or_null != NULL, "must be able to return extra argument"); |
0 | 475 |
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476 if (!Reflection::verify_field_access(ref_klass(), |
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477 resolved_klass(), |
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478 sel_klass(), |
0 | 479 flags, |
480 true)) { | |
481 ResourceMark rm(THREAD); | |
482 Exceptions::fthrow( | |
483 THREAD_AND_LOCATION, | |
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484 vmSymbols::java_lang_IllegalAccessError(), |
0 | 485 "tried to access method %s.%s%s from class %s", |
486 sel_klass->external_name(), | |
487 sel_method->name()->as_C_string(), | |
488 sel_method->signature()->as_C_string(), | |
489 ref_klass->external_name() | |
490 ); | |
491 return; | |
492 } | |
493 } | |
494 | |
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495 void LinkResolver::resolve_method_statically(methodHandle& resolved_method, KlassHandle& resolved_klass, |
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496 Bytecodes::Code code, constantPoolHandle pool, int index, TRAPS) { |
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497 // This method is used only |
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498 // (1) in C2 from InlineTree::ok_to_inline (via ciMethod::check_call), |
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499 // and |
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500 // (2) in Bytecode_invoke::static_target |
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501 // It appears to fail when applied to an invokeinterface call site. |
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502 // FIXME: Remove this method and ciMethod::check_call; refactor to use the other LinkResolver entry points. |
0 | 503 // resolve klass |
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504 if (code == Bytecodes::_invokedynamic) { |
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505 resolved_klass = SystemDictionary::MethodHandle_klass(); |
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506 Symbol* method_name = vmSymbols::invoke_name(); |
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507 Symbol* method_signature = pool->signature_ref_at(index); |
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508 KlassHandle current_klass(THREAD, pool->pool_holder()); |
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509 resolve_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, true, false, CHECK); |
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510 return; |
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511 } |
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512 |
0 | 513 resolve_klass(resolved_klass, pool, index, CHECK); |
514 | |
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515 Symbol* method_name = pool->name_ref_at(index); |
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516 Symbol* method_signature = pool->signature_ref_at(index); |
0 | 517 KlassHandle current_klass(THREAD, pool->pool_holder()); |
518 | |
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519 if (pool->has_preresolution() |
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520 || (resolved_klass() == SystemDictionary::MethodHandle_klass() && |
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521 MethodHandles::is_signature_polymorphic_name(resolved_klass(), method_name))) { |
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522 Method* result_oop = ConstantPool::method_at_if_loaded(pool, index); |
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523 if (result_oop != NULL) { |
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524 resolved_method = methodHandle(THREAD, result_oop); |
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525 return; |
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526 } |
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527 } |
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528 |
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529 if (code == Bytecodes::_invokeinterface) { |
13413 | 530 resolve_interface_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, true, true, CHECK); |
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531 } else if (code == Bytecodes::_invokevirtual) { |
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532 resolve_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, true, true, CHECK); |
13413 | 533 } else if (!resolved_klass->is_interface()) { |
534 resolve_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, true, false, CHECK); | |
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535 } else { |
13413 | 536 bool nostatics = (code == Bytecodes::_invokestatic) ? false : true; |
537 resolve_interface_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, true, nostatics, CHECK); | |
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538 } |
0 | 539 } |
540 | |
541 void LinkResolver::resolve_method(methodHandle& resolved_method, KlassHandle resolved_klass, | |
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542 Symbol* method_name, Symbol* method_signature, |
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543 KlassHandle current_klass, bool check_access, |
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544 bool require_methodref, TRAPS) { |
0 | 545 |
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546 Handle nested_exception; |
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547 |
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548 // 1. check if methodref required, that resolved_klass is not interfacemethodref |
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549 if (require_methodref && resolved_klass->is_interface()) { |
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550 ResourceMark rm(THREAD); |
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551 char buf[200]; |
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552 jio_snprintf(buf, sizeof(buf), "Found interface %s, but class was expected", |
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553 resolved_klass()->external_name()); |
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554 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); |
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555 } |
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556 |
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557 // 2. lookup method in resolved klass and its super klasses |
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558 lookup_method_in_klasses(resolved_method, resolved_klass, method_name, method_signature, true, false, CHECK); |
0 | 559 |
18046 | 560 if (resolved_method.is_null() && !resolved_klass->oop_is_array()) { // not found in the class hierarchy |
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561 // 3. lookup method in all the interfaces implemented by the resolved klass |
0 | 562 lookup_method_in_interfaces(resolved_method, resolved_klass, method_name, method_signature, CHECK); |
563 | |
564 if (resolved_method.is_null()) { | |
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565 // JSR 292: see if this is an implicitly generated method MethodHandle.linkToVirtual(*...), etc |
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566 lookup_polymorphic_method(resolved_method, resolved_klass, method_name, method_signature, |
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567 current_klass, (Handle*)NULL, (Handle*)NULL, THREAD); |
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568 if (HAS_PENDING_EXCEPTION) { |
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569 nested_exception = Handle(THREAD, PENDING_EXCEPTION); |
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570 CLEAR_PENDING_EXCEPTION; |
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571 } |
710 | 572 } |
18046 | 573 } |
710 | 574 |
18046 | 575 if (resolved_method.is_null()) { |
576 // 4. method lookup failed | |
577 ResourceMark rm(THREAD); | |
578 THROW_MSG_CAUSE(vmSymbols::java_lang_NoSuchMethodError(), | |
579 Method::name_and_sig_as_C_string(resolved_klass(), | |
580 method_name, | |
581 method_signature), | |
582 nested_exception); | |
0 | 583 } |
584 | |
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585 // 5. access checks, access checking may be turned off when calling from within the VM. |
0 | 586 if (check_access) { |
587 assert(current_klass.not_null() , "current_klass should not be null"); | |
588 | |
589 // check if method can be accessed by the referring class | |
590 check_method_accessability(current_klass, | |
591 resolved_klass, | |
592 KlassHandle(THREAD, resolved_method->method_holder()), | |
593 resolved_method, | |
594 CHECK); | |
595 | |
596 // check loader constraints | |
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597 Handle loader (THREAD, InstanceKlass::cast(current_klass())->class_loader()); |
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598 Handle class_loader (THREAD, resolved_method->method_holder()->class_loader()); |
0 | 599 { |
600 ResourceMark rm(THREAD); | |
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601 Symbol* failed_type_symbol = |
0 | 602 SystemDictionary::check_signature_loaders(method_signature, loader, |
603 class_loader, true, CHECK); | |
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604 if (failed_type_symbol != NULL) { |
0 | 605 const char* msg = "loader constraint violation: when resolving method" |
606 " \"%s\" the class loader (instance of %s) of the current class, %s," | |
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607 " and the class loader (instance of %s) for the method's defining class, %s, have" |
0 | 608 " different Class objects for the type %s used in the signature"; |
6983 | 609 char* sig = Method::name_and_sig_as_C_string(resolved_klass(),method_name,method_signature); |
0 | 610 const char* loader1 = SystemDictionary::loader_name(loader()); |
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611 char* current = InstanceKlass::cast(current_klass())->name()->as_C_string(); |
0 | 612 const char* loader2 = SystemDictionary::loader_name(class_loader()); |
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613 char* target = InstanceKlass::cast(resolved_method->method_holder()) |
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614 ->name()->as_C_string(); |
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615 char* failed_type_name = failed_type_symbol->as_C_string(); |
0 | 616 size_t buflen = strlen(msg) + strlen(sig) + strlen(loader1) + |
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617 strlen(current) + strlen(loader2) + strlen(target) + |
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618 strlen(failed_type_name) + 1; |
0 | 619 char* buf = NEW_RESOURCE_ARRAY_IN_THREAD(THREAD, char, buflen); |
620 jio_snprintf(buf, buflen, msg, sig, loader1, current, loader2, | |
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621 target, failed_type_name); |
0 | 622 THROW_MSG(vmSymbols::java_lang_LinkageError(), buf); |
623 } | |
624 } | |
625 } | |
626 } | |
627 | |
628 void LinkResolver::resolve_interface_method(methodHandle& resolved_method, | |
629 KlassHandle resolved_klass, | |
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630 Symbol* method_name, |
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631 Symbol* method_signature, |
0 | 632 KlassHandle current_klass, |
13413 | 633 bool check_access, |
634 bool nostatics, TRAPS) { | |
0 | 635 |
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636 // check if klass is interface |
0 | 637 if (!resolved_klass->is_interface()) { |
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638 ResourceMark rm(THREAD); |
0 | 639 char buf[200]; |
6983 | 640 jio_snprintf(buf, sizeof(buf), "Found class %s, but interface was expected", resolved_klass()->external_name()); |
0 | 641 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); |
642 } | |
643 | |
644 // lookup method in this interface or its super, java.lang.Object | |
13413 | 645 // JDK8: also look for static methods |
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646 lookup_method_in_klasses(resolved_method, resolved_klass, method_name, method_signature, false, true, CHECK); |
0 | 647 |
18046 | 648 if (resolved_method.is_null() && !resolved_klass->oop_is_array()) { |
0 | 649 // lookup method in all the super-interfaces |
650 lookup_method_in_interfaces(resolved_method, resolved_klass, method_name, method_signature, CHECK); | |
18046 | 651 } |
652 | |
653 if (resolved_method.is_null()) { | |
654 // no method found | |
655 ResourceMark rm(THREAD); | |
656 THROW_MSG(vmSymbols::java_lang_NoSuchMethodError(), | |
657 Method::name_and_sig_as_C_string(resolved_klass(), | |
658 method_name, | |
659 method_signature)); | |
0 | 660 } |
661 | |
662 if (check_access) { | |
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663 // JDK8 adds non-public interface methods, and accessability check requirement |
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664 assert(current_klass.not_null() , "current_klass should not be null"); |
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665 |
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666 // check if method can be accessed by the referring class |
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667 check_method_accessability(current_klass, |
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668 resolved_klass, |
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669 KlassHandle(THREAD, resolved_method->method_holder()), |
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670 resolved_method, |
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671 CHECK); |
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672 |
0 | 673 HandleMark hm(THREAD); |
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674 Handle loader (THREAD, InstanceKlass::cast(current_klass())->class_loader()); |
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675 Handle class_loader (THREAD, resolved_method->method_holder()->class_loader()); |
0 | 676 { |
677 ResourceMark rm(THREAD); | |
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678 Symbol* failed_type_symbol = |
0 | 679 SystemDictionary::check_signature_loaders(method_signature, loader, |
680 class_loader, true, CHECK); | |
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681 if (failed_type_symbol != NULL) { |
0 | 682 const char* msg = "loader constraint violation: when resolving " |
683 "interface method \"%s\" the class loader (instance of %s) of the " | |
684 "current class, %s, and the class loader (instance of %s) for " | |
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685 "the method's defining class, %s, have different Class objects for the type %s " |
0 | 686 "used in the signature"; |
6983 | 687 char* sig = Method::name_and_sig_as_C_string(resolved_klass(),method_name,method_signature); |
0 | 688 const char* loader1 = SystemDictionary::loader_name(loader()); |
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689 char* current = InstanceKlass::cast(current_klass())->name()->as_C_string(); |
0 | 690 const char* loader2 = SystemDictionary::loader_name(class_loader()); |
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691 char* target = InstanceKlass::cast(resolved_method->method_holder()) |
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692 ->name()->as_C_string(); |
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693 char* failed_type_name = failed_type_symbol->as_C_string(); |
0 | 694 size_t buflen = strlen(msg) + strlen(sig) + strlen(loader1) + |
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695 strlen(current) + strlen(loader2) + strlen(target) + |
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696 strlen(failed_type_name) + 1; |
0 | 697 char* buf = NEW_RESOURCE_ARRAY_IN_THREAD(THREAD, char, buflen); |
698 jio_snprintf(buf, buflen, msg, sig, loader1, current, loader2, | |
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699 target, failed_type_name); |
0 | 700 THROW_MSG(vmSymbols::java_lang_LinkageError(), buf); |
701 } | |
702 } | |
703 } | |
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704 |
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705 if (nostatics && resolved_method->is_static()) { |
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706 ResourceMark rm(THREAD); |
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707 char buf[200]; |
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708 jio_snprintf(buf, sizeof(buf), "Expected instance not static method %s", |
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709 Method::name_and_sig_as_C_string(resolved_klass(), |
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710 resolved_method->name(), resolved_method->signature())); |
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711 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); |
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712 } |
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713 |
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714 if (TraceItables && Verbose) { |
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715 ResourceMark rm(THREAD); |
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716 tty->print("invokeinterface resolved method: caller-class:%s, compile-time-class:%s, method:%s, method_holder:%s, access_flags: ", |
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717 (current_klass.is_null() ? "<NULL>" : current_klass->internal_name()), |
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718 (resolved_klass.is_null() ? "<NULL>" : resolved_klass->internal_name()), |
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719 Method::name_and_sig_as_C_string(resolved_klass(), |
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720 resolved_method->name(), |
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721 resolved_method->signature()), |
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722 resolved_method->method_holder()->internal_name() |
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723 ); |
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724 resolved_method->access_flags().print_on(tty); |
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725 if (resolved_method->is_default_method()) { |
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726 tty->print("default "); |
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727 } |
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728 if (resolved_method->is_overpass()) { |
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729 tty->print("overpass"); |
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730 } |
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731 tty->cr(); |
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732 } |
0 | 733 } |
734 | |
735 //------------------------------------------------------------------------------------------------------------------------ | |
736 // Field resolution | |
737 | |
738 void LinkResolver::check_field_accessability(KlassHandle ref_klass, | |
739 KlassHandle resolved_klass, | |
740 KlassHandle sel_klass, | |
741 fieldDescriptor& fd, | |
742 TRAPS) { | |
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743 if (!Reflection::verify_field_access(ref_klass(), |
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744 resolved_klass(), |
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745 sel_klass(), |
0 | 746 fd.access_flags(), |
747 true)) { | |
748 ResourceMark rm(THREAD); | |
749 Exceptions::fthrow( | |
750 THREAD_AND_LOCATION, | |
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751 vmSymbols::java_lang_IllegalAccessError(), |
0 | 752 "tried to access field %s.%s from class %s", |
753 sel_klass->external_name(), | |
754 fd.name()->as_C_string(), | |
755 ref_klass->external_name() | |
756 ); | |
757 return; | |
758 } | |
759 } | |
760 | |
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761 void LinkResolver::resolve_field_access(fieldDescriptor& result, constantPoolHandle pool, int index, Bytecodes::Code byte, TRAPS) { |
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762 // Load these early in case the resolve of the containing klass fails |
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763 Symbol* field = pool->name_ref_at(index); |
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764 Symbol* sig = pool->signature_ref_at(index); |
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765 |
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766 // resolve specified klass |
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767 KlassHandle resolved_klass; |
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768 resolve_klass(resolved_klass, pool, index, CHECK); |
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769 |
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770 KlassHandle current_klass(THREAD, pool->pool_holder()); |
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771 resolve_field(result, resolved_klass, field, sig, current_klass, byte, true, true, CHECK); |
0 | 772 } |
773 | |
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774 void LinkResolver::resolve_field(fieldDescriptor& fd, KlassHandle resolved_klass, Symbol* field, Symbol* sig, |
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775 KlassHandle current_klass, Bytecodes::Code byte, bool check_access, bool initialize_class, |
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776 TRAPS) { |
0 | 777 assert(byte == Bytecodes::_getstatic || byte == Bytecodes::_putstatic || |
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778 byte == Bytecodes::_getfield || byte == Bytecodes::_putfield || |
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779 (byte == Bytecodes::_nop && !check_access), "bad field access bytecode"); |
0 | 780 |
781 bool is_static = (byte == Bytecodes::_getstatic || byte == Bytecodes::_putstatic); | |
782 bool is_put = (byte == Bytecodes::_putfield || byte == Bytecodes::_putstatic); | |
783 | |
784 // Check if there's a resolved klass containing the field | |
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785 if (resolved_klass.is_null()) { |
0 | 786 ResourceMark rm(THREAD); |
787 THROW_MSG(vmSymbols::java_lang_NoSuchFieldError(), field->as_C_string()); | |
788 } | |
789 | |
790 // Resolve instance field | |
18046 | 791 KlassHandle sel_klass(THREAD, resolved_klass->find_field(field, sig, &fd)); |
0 | 792 // check if field exists; i.e., if a klass containing the field def has been selected |
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793 if (sel_klass.is_null()) { |
0 | 794 ResourceMark rm(THREAD); |
795 THROW_MSG(vmSymbols::java_lang_NoSuchFieldError(), field->as_C_string()); | |
796 } | |
797 | |
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798 if (!check_access) |
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799 // Access checking may be turned off when calling from within the VM. |
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800 return; |
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801 |
0 | 802 // check access |
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803 check_field_accessability(current_klass, resolved_klass, sel_klass, fd, CHECK); |
0 | 804 |
805 // check for errors | |
806 if (is_static != fd.is_static()) { | |
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807 ResourceMark rm(THREAD); |
0 | 808 char msg[200]; |
6983 | 809 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 | 810 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), msg); |
811 } | |
812 | |
813 // Final fields can only be accessed from its own class. | |
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814 if (is_put && fd.access_flags().is_final() && sel_klass() != current_klass()) { |
0 | 815 THROW(vmSymbols::java_lang_IllegalAccessError()); |
816 } | |
817 | |
818 // initialize resolved_klass if necessary | |
819 // note 1: the klass which declared the field must be initialized (i.e, sel_klass) | |
820 // according to the newest JVM spec (5.5, p.170) - was bug (gri 7/28/99) | |
821 // | |
822 // note 2: we don't want to force initialization if we are just checking | |
823 // if the field access is legal; e.g., during compilation | |
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824 if (is_static && initialize_class) { |
0 | 825 sel_klass->initialize(CHECK); |
826 } | |
827 | |
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828 if (sel_klass() != current_klass()) { |
0 | 829 HandleMark hm(THREAD); |
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830 Handle ref_loader (THREAD, InstanceKlass::cast(current_klass())->class_loader()); |
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831 Handle sel_loader (THREAD, InstanceKlass::cast(sel_klass())->class_loader()); |
0 | 832 { |
833 ResourceMark rm(THREAD); | |
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834 Symbol* failed_type_symbol = |
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835 SystemDictionary::check_signature_loaders(sig, |
0 | 836 ref_loader, sel_loader, |
837 false, | |
838 CHECK); | |
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839 if (failed_type_symbol != NULL) { |
0 | 840 const char* msg = "loader constraint violation: when resolving field" |
841 " \"%s\" the class loader (instance of %s) of the referring class, " | |
842 "%s, and the class loader (instance of %s) for the field's resolved " | |
843 "type, %s, have different Class objects for that type"; | |
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844 char* field_name = field->as_C_string(); |
0 | 845 const char* loader1 = SystemDictionary::loader_name(ref_loader()); |
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846 char* sel = InstanceKlass::cast(sel_klass())->name()->as_C_string(); |
0 | 847 const char* loader2 = SystemDictionary::loader_name(sel_loader()); |
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848 char* failed_type_name = failed_type_symbol->as_C_string(); |
0 | 849 size_t buflen = strlen(msg) + strlen(field_name) + strlen(loader1) + |
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850 strlen(sel) + strlen(loader2) + strlen(failed_type_name) + 1; |
0 | 851 char* buf = NEW_RESOURCE_ARRAY_IN_THREAD(THREAD, char, buflen); |
852 jio_snprintf(buf, buflen, msg, field_name, loader1, sel, loader2, | |
853 failed_type_name); | |
854 THROW_MSG(vmSymbols::java_lang_LinkageError(), buf); | |
855 } | |
856 } | |
857 } | |
858 | |
859 // return information. note that the klass is set to the actual klass containing the | |
860 // field, otherwise access of static fields in superclasses will not work. | |
861 } | |
862 | |
863 | |
864 //------------------------------------------------------------------------------------------------------------------------ | |
865 // Invoke resolution | |
866 // | |
867 // Naming conventions: | |
868 // | |
869 // resolved_method the specified method (i.e., static receiver specified via constant pool index) | |
870 // sel_method the selected method (selected via run-time lookup; e.g., based on dynamic receiver class) | |
871 // resolved_klass the specified klass (i.e., specified via constant pool index) | |
872 // recv_klass the receiver klass | |
873 | |
874 | |
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875 void LinkResolver::resolve_static_call(CallInfo& result, KlassHandle& resolved_klass, Symbol* method_name, |
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876 Symbol* method_signature, KlassHandle current_klass, |
0 | 877 bool check_access, bool initialize_class, TRAPS) { |
878 methodHandle resolved_method; | |
879 linktime_resolve_static_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK); | |
6983 | 880 resolved_klass = KlassHandle(THREAD, resolved_method->method_holder()); |
0 | 881 |
882 // Initialize klass (this should only happen if everything is ok) | |
883 if (initialize_class && resolved_klass->should_be_initialized()) { | |
884 resolved_klass->initialize(CHECK); | |
885 linktime_resolve_static_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK); | |
886 } | |
887 | |
888 // setup result | |
889 result.set_static(resolved_klass, resolved_method, CHECK); | |
890 } | |
891 | |
892 // throws linktime exceptions | |
893 void LinkResolver::linktime_resolve_static_method(methodHandle& resolved_method, KlassHandle resolved_klass, | |
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894 Symbol* method_name, Symbol* method_signature, |
0 | 895 KlassHandle current_klass, bool check_access, TRAPS) { |
896 | |
13413 | 897 if (!resolved_klass->is_interface()) { |
898 resolve_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, false, CHECK); | |
899 } else { | |
900 resolve_interface_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, false, CHECK); | |
901 } | |
0 | 902 assert(resolved_method->name() != vmSymbols::class_initializer_name(), "should have been checked in verifier"); |
903 | |
904 // check if static | |
905 if (!resolved_method->is_static()) { | |
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906 ResourceMark rm(THREAD); |
0 | 907 char buf[200]; |
6983 | 908 jio_snprintf(buf, sizeof(buf), "Expected static method %s", Method::name_and_sig_as_C_string(resolved_klass(), |
0 | 909 resolved_method->name(), |
910 resolved_method->signature())); | |
911 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); | |
912 } | |
913 } | |
914 | |
915 | |
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916 void LinkResolver::resolve_special_call(CallInfo& result, KlassHandle resolved_klass, Symbol* method_name, |
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917 Symbol* method_signature, KlassHandle current_klass, bool check_access, TRAPS) { |
0 | 918 methodHandle resolved_method; |
919 linktime_resolve_special_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK); | |
920 runtime_resolve_special_method(result, resolved_method, resolved_klass, current_klass, check_access, CHECK); | |
921 } | |
922 | |
923 // throws linktime exceptions | |
924 void LinkResolver::linktime_resolve_special_method(methodHandle& resolved_method, KlassHandle resolved_klass, | |
2177
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925 Symbol* method_name, Symbol* method_signature, |
0 | 926 KlassHandle current_klass, bool check_access, TRAPS) { |
927 | |
12318
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928 // Invokespecial is called for multiple special reasons: |
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929 // <init> |
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930 // local private method invocation, for classes and interfaces |
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931 // superclass.method, which can also resolve to a default method |
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932 // and the selected method is recalculated relative to the direct superclass |
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933 // superinterface.method, which explicitly does not check shadowing |
6934 | 934 |
13413 | 935 if (!resolved_klass->is_interface()) { |
936 resolve_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, false, CHECK); | |
937 } else { | |
938 resolve_interface_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, true, CHECK); | |
939 } | |
0 | 940 |
941 // check if method name is <init>, that it is found in same klass as static type | |
942 if (resolved_method->name() == vmSymbols::object_initializer_name() && | |
943 resolved_method->method_holder() != resolved_klass()) { | |
944 ResourceMark rm(THREAD); | |
945 Exceptions::fthrow( | |
946 THREAD_AND_LOCATION, | |
2177
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947 vmSymbols::java_lang_NoSuchMethodError(), |
0 | 948 "%s: method %s%s not found", |
949 resolved_klass->external_name(), | |
950 resolved_method->name()->as_C_string(), | |
951 resolved_method->signature()->as_C_string() | |
952 ); | |
953 return; | |
954 } | |
955 | |
13401
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956 // check if invokespecial's interface method reference is in an indirect superinterface |
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957 if (!current_klass.is_null() && resolved_klass->is_interface()) { |
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958 Klass *klass_to_check = !InstanceKlass::cast(current_klass())->is_anonymous() ? |
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959 current_klass() : |
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960 InstanceKlass::cast(current_klass())->host_klass(); |
13433
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961 // As of the fix for 4486457 we disable verification for all of the |
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962 // dynamically-generated bytecodes associated with the 1.4 |
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963 // reflection implementation, not just those associated with |
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964 // sun/reflect/SerializationConstructorAccessor. |
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965 bool is_reflect = JDK_Version::is_gte_jdk14x_version() && |
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966 UseNewReflection && |
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967 klass_to_check->is_subclass_of( |
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968 SystemDictionary::reflect_MagicAccessorImpl_klass()); |
13401
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969 |
13433
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970 if (!is_reflect && |
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971 !InstanceKlass::cast(klass_to_check)->is_same_or_direct_interface(resolved_klass())) { |
13401
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972 ResourceMark rm(THREAD); |
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973 char buf[200]; |
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974 jio_snprintf(buf, sizeof(buf), |
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975 "Interface method reference: %s, is in an indirect superinterface of %s", |
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976 Method::name_and_sig_as_C_string(resolved_klass(), |
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977 resolved_method->name(), |
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978 resolved_method->signature()), |
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979 current_klass->external_name()); |
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980 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); |
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981 } |
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982 } |
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983 |
0 | 984 // check if not static |
985 if (resolved_method->is_static()) { | |
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986 ResourceMark rm(THREAD); |
0 | 987 char buf[200]; |
988 jio_snprintf(buf, sizeof(buf), | |
989 "Expecting non-static method %s", | |
6983 | 990 Method::name_and_sig_as_C_string(resolved_klass(), |
0 | 991 resolved_method->name(), |
992 resolved_method->signature())); | |
993 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); | |
994 } | |
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995 |
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996 if (TraceItables && Verbose) { |
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997 ResourceMark rm(THREAD); |
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998 tty->print("invokespecial resolved method: caller-class:%s, compile-time-class:%s, method:%s, method_holder:%s, access_flags: ", |
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999 (current_klass.is_null() ? "<NULL>" : current_klass->internal_name()), |
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1000 (resolved_klass.is_null() ? "<NULL>" : resolved_klass->internal_name()), |
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1001 Method::name_and_sig_as_C_string(resolved_klass(), |
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1002 resolved_method->name(), |
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1003 resolved_method->signature()), |
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1004 resolved_method->method_holder()->internal_name() |
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1005 ); |
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1006 resolved_method->access_flags().print_on(tty); |
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1007 if (resolved_method->is_default_method()) { |
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1008 tty->print("default "); |
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1009 } |
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1010 if (resolved_method->is_overpass()) { |
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1011 tty->print("overpass"); |
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1012 } |
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1013 tty->cr(); |
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1014 } |
0 | 1015 } |
1016 | |
1017 // throws runtime exceptions | |
1018 void LinkResolver::runtime_resolve_special_method(CallInfo& result, methodHandle resolved_method, KlassHandle resolved_klass, | |
1019 KlassHandle current_klass, bool check_access, TRAPS) { | |
1020 | |
1021 // resolved method is selected method unless we have an old-style lookup | |
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1022 // for a superclass method |
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1023 // Invokespecial for a superinterface, resolved method is selected method, |
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1024 // no checks for shadowing |
0 | 1025 methodHandle sel_method(THREAD, resolved_method()); |
1026 | |
1027 // check if this is an old-style super call and do a new lookup if so | |
1028 { KlassHandle method_klass = KlassHandle(THREAD, | |
1029 resolved_method->method_holder()); | |
1030 | |
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1031 if (check_access && |
0 | 1032 // a) check if ACC_SUPER flag is set for the current class |
8702 | 1033 (current_klass->is_super() || !AllowNonVirtualCalls) && |
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1034 // b) check if the class of the resolved_klass is a superclass |
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1035 // (not supertype in order to exclude interface classes) of the current class. |
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1036 // This check is not performed for super.invoke for interface methods |
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1037 // in super interfaces. |
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1038 current_klass->is_subclass_of(resolved_klass()) && |
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1039 current_klass() != resolved_klass() && |
0 | 1040 // c) check if the method is not <init> |
1041 resolved_method->name() != vmSymbols::object_initializer_name()) { | |
1042 // Lookup super method | |
1043 KlassHandle super_klass(THREAD, current_klass->super()); | |
1044 lookup_instance_method_in_klasses(sel_method, super_klass, | |
2177
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1045 resolved_method->name(), |
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1046 resolved_method->signature(), CHECK); |
0 | 1047 // check if found |
1048 if (sel_method.is_null()) { | |
1049 ResourceMark rm(THREAD); | |
1050 THROW_MSG(vmSymbols::java_lang_AbstractMethodError(), | |
6983 | 1051 Method::name_and_sig_as_C_string(resolved_klass(), |
0 | 1052 resolved_method->name(), |
1053 resolved_method->signature())); | |
1054 } | |
1055 } | |
1056 } | |
1057 | |
1058 // check if not static | |
1059 if (sel_method->is_static()) { | |
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1060 ResourceMark rm(THREAD); |
0 | 1061 char buf[200]; |
6983 | 1062 jio_snprintf(buf, sizeof(buf), "Expecting non-static method %s", Method::name_and_sig_as_C_string(resolved_klass(), |
0 | 1063 resolved_method->name(), |
1064 resolved_method->signature())); | |
1065 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); | |
1066 } | |
1067 | |
1068 // check if abstract | |
1069 if (sel_method->is_abstract()) { | |
1070 ResourceMark rm(THREAD); | |
1071 THROW_MSG(vmSymbols::java_lang_AbstractMethodError(), | |
6983 | 1072 Method::name_and_sig_as_C_string(resolved_klass(), |
0 | 1073 sel_method->name(), |
1074 sel_method->signature())); | |
1075 } | |
1076 | |
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1077 if (TraceItables && Verbose) { |
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1078 ResourceMark rm(THREAD); |
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1079 tty->print("invokespecial selected method: resolved-class:%s, method:%s, method_holder:%s, access_flags: ", |
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1080 (resolved_klass.is_null() ? "<NULL>" : resolved_klass->internal_name()), |
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1081 Method::name_and_sig_as_C_string(resolved_klass(), |
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1082 sel_method->name(), |
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1083 sel_method->signature()), |
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1084 sel_method->method_holder()->internal_name() |
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1085 ); |
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1086 sel_method->access_flags().print_on(tty); |
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1087 if (sel_method->is_default_method()) { |
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1088 tty->print("default "); |
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1089 } |
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1090 if (sel_method->is_overpass()) { |
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1091 tty->print("overpass"); |
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1092 } |
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1093 tty->cr(); |
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1094 } |
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1095 |
0 | 1096 // setup result |
1097 result.set_static(resolved_klass, sel_method, CHECK); | |
1098 } | |
1099 | |
1100 void LinkResolver::resolve_virtual_call(CallInfo& result, Handle recv, KlassHandle receiver_klass, KlassHandle resolved_klass, | |
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1101 Symbol* method_name, Symbol* method_signature, KlassHandle current_klass, |
0 | 1102 bool check_access, bool check_null_and_abstract, TRAPS) { |
1103 methodHandle resolved_method; | |
1104 linktime_resolve_virtual_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK); | |
1105 runtime_resolve_virtual_method(result, resolved_method, resolved_klass, recv, receiver_klass, check_null_and_abstract, CHECK); | |
1106 } | |
1107 | |
1108 // throws linktime exceptions | |
1109 void LinkResolver::linktime_resolve_virtual_method(methodHandle &resolved_method, KlassHandle resolved_klass, | |
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1110 Symbol* method_name, Symbol* method_signature, |
0 | 1111 KlassHandle current_klass, bool check_access, TRAPS) { |
1112 // normal method resolution | |
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1113 resolve_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, true, CHECK); |
0 | 1114 |
1115 assert(resolved_method->name() != vmSymbols::object_initializer_name(), "should have been checked in verifier"); | |
1116 assert(resolved_method->name() != vmSymbols::class_initializer_name (), "should have been checked in verifier"); | |
1117 | |
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1118 // check if private interface method |
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1119 if (resolved_klass->is_interface() && resolved_method->is_private()) { |
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1120 ResourceMark rm(THREAD); |
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1121 char buf[200]; |
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1122 jio_snprintf(buf, sizeof(buf), "private interface method requires invokespecial, not invokevirtual: method %s, caller-class:%s", |
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1123 Method::name_and_sig_as_C_string(resolved_klass(), |
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1124 resolved_method->name(), |
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1125 resolved_method->signature()), |
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1126 (current_klass.is_null() ? "<NULL>" : current_klass->internal_name())); |
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1127 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); |
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1128 } |
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1129 |
0 | 1130 // check if not static |
1131 if (resolved_method->is_static()) { | |
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1132 ResourceMark rm(THREAD); |
0 | 1133 char buf[200]; |
6983 | 1134 jio_snprintf(buf, sizeof(buf), "Expecting non-static method %s", Method::name_and_sig_as_C_string(resolved_klass(), |
0 | 1135 resolved_method->name(), |
1136 resolved_method->signature())); | |
1137 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); | |
1138 } | |
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1139 |
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1140 if (PrintVtables && Verbose) { |
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1141 ResourceMark rm(THREAD); |
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1142 tty->print("invokevirtual resolved method: caller-class:%s, compile-time-class:%s, method:%s, method_holder:%s, access_flags: ", |
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1143 (current_klass.is_null() ? "<NULL>" : current_klass->internal_name()), |
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1144 (resolved_klass.is_null() ? "<NULL>" : resolved_klass->internal_name()), |
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1145 Method::name_and_sig_as_C_string(resolved_klass(), |
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1146 resolved_method->name(), |
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1147 resolved_method->signature()), |
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1148 resolved_method->method_holder()->internal_name() |
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1149 ); |
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1150 resolved_method->access_flags().print_on(tty); |
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1151 if (resolved_method->is_default_method()) { |
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1152 tty->print("default "); |
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1153 } |
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1154 if (resolved_method->is_overpass()) { |
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1155 tty->print("overpass"); |
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|
1156 } |
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|
1157 tty->cr(); |
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1158 } |
0 | 1159 } |
1160 | |
1161 // throws runtime exceptions | |
1162 void LinkResolver::runtime_resolve_virtual_method(CallInfo& result, | |
1163 methodHandle resolved_method, | |
1164 KlassHandle resolved_klass, | |
1165 Handle recv, | |
1166 KlassHandle recv_klass, | |
1167 bool check_null_and_abstract, | |
1168 TRAPS) { | |
1169 | |
1170 // setup default return values | |
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1171 int vtable_index = Method::invalid_vtable_index; |
0 | 1172 methodHandle selected_method; |
1173 | |
1174 assert(recv.is_null() || recv->is_oop(), "receiver is not an oop"); | |
1175 | |
1176 // runtime method resolution | |
1177 if (check_null_and_abstract && recv.is_null()) { // check if receiver exists | |
1178 THROW(vmSymbols::java_lang_NullPointerException()); | |
1179 } | |
1180 | |
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1181 // Virtual methods cannot be resolved before its klass has been linked, for otherwise the Method*'s |
0 | 1182 // has not been rewritten, and the vtable initialized. Make sure to do this after the nullcheck, since |
1183 // a missing receiver might result in a bogus lookup. | |
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1184 assert(resolved_method->method_holder()->is_linked(), "must be linked"); |
0 | 1185 |
1186 // do lookup based on receiver klass using the vtable index | |
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1187 if (resolved_method->method_holder()->is_interface()) { // miranda method |
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1188 vtable_index = vtable_index_of_interface_method(resolved_klass, |
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1189 resolved_method); |
0 | 1190 assert(vtable_index >= 0 , "we should have valid vtable index at this point"); |
1191 | |
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1192 InstanceKlass* inst = InstanceKlass::cast(recv_klass()); |
0 | 1193 selected_method = methodHandle(THREAD, inst->method_at_vtable(vtable_index)); |
1194 } else { | |
1195 // at this point we are sure that resolved_method is virtual and not | |
1196 // a miranda method; therefore, it must have a valid vtable index. | |
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1197 assert(!resolved_method->has_itable_index(), ""); |
0 | 1198 vtable_index = resolved_method->vtable_index(); |
1199 // We could get a negative vtable_index for final methods, | |
1200 // because as an optimization they are they are never put in the vtable, | |
1201 // unless they override an existing method. | |
1202 // If we do get a negative, it means the resolved method is the the selected | |
1203 // method, and it can never be changed by an override. | |
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1204 if (vtable_index == Method::nonvirtual_vtable_index) { |
0 | 1205 assert(resolved_method->can_be_statically_bound(), "cannot override this method"); |
1206 selected_method = resolved_method; | |
1207 } else { | |
1208 // recv_klass might be an arrayKlassOop but all vtables start at | |
1209 // the same place. The cast is to avoid virtual call and assertion. | |
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1210 InstanceKlass* inst = (InstanceKlass*)recv_klass(); |
0 | 1211 selected_method = methodHandle(THREAD, inst->method_at_vtable(vtable_index)); |
1212 } | |
1213 } | |
1214 | |
1215 // check if method exists | |
1216 if (selected_method.is_null()) { | |
1217 ResourceMark rm(THREAD); | |
1218 THROW_MSG(vmSymbols::java_lang_AbstractMethodError(), | |
6983 | 1219 Method::name_and_sig_as_C_string(resolved_klass(), |
0 | 1220 resolved_method->name(), |
1221 resolved_method->signature())); | |
1222 } | |
1223 | |
1224 // check if abstract | |
1225 if (check_null_and_abstract && selected_method->is_abstract()) { | |
1226 ResourceMark rm(THREAD); | |
1227 THROW_MSG(vmSymbols::java_lang_AbstractMethodError(), | |
6983 | 1228 Method::name_and_sig_as_C_string(resolved_klass(), |
0 | 1229 selected_method->name(), |
1230 selected_method->signature())); | |
1231 } | |
1232 | |
12318
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1233 if (PrintVtables && Verbose) { |
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1234 ResourceMark rm(THREAD); |
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1235 tty->print("invokevirtual selected method: receiver-class:%s, resolved-class:%s, method:%s, method_holder:%s, vtable_index:%d, access_flags: ", |
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|
1236 (recv_klass.is_null() ? "<NULL>" : recv_klass->internal_name()), |
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|
1237 (resolved_klass.is_null() ? "<NULL>" : resolved_klass->internal_name()), |
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1238 Method::name_and_sig_as_C_string(resolved_klass(), |
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|
1239 resolved_method->name(), |
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|
1240 resolved_method->signature()), |
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1241 selected_method->method_holder()->internal_name(), |
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|
1242 vtable_index |
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|
1243 ); |
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|
1244 selected_method->access_flags().print_on(tty); |
12823
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1245 if (selected_method->is_default_method()) { |
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1246 tty->print("default "); |
12318
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|
1247 } |
12823
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1248 if (selected_method->is_overpass()) { |
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1249 tty->print("overpass"); |
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|
1250 } |
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|
1251 tty->cr(); |
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|
1252 } |
0 | 1253 // setup result |
1254 result.set_virtual(resolved_klass, recv_klass, resolved_method, selected_method, vtable_index, CHECK); | |
1255 } | |
1256 | |
1257 void LinkResolver::resolve_interface_call(CallInfo& result, Handle recv, KlassHandle recv_klass, KlassHandle resolved_klass, | |
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1258 Symbol* method_name, Symbol* method_signature, KlassHandle current_klass, |
0 | 1259 bool check_access, bool check_null_and_abstract, TRAPS) { |
1260 methodHandle resolved_method; | |
1261 linktime_resolve_interface_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK); | |
1262 runtime_resolve_interface_method(result, resolved_method, resolved_klass, recv, recv_klass, check_null_and_abstract, CHECK); | |
1263 } | |
1264 | |
1265 // throws linktime exceptions | |
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|
1266 void LinkResolver::linktime_resolve_interface_method(methodHandle& resolved_method, KlassHandle resolved_klass, Symbol* method_name, |
3582bf76420e
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|
1267 Symbol* method_signature, KlassHandle current_klass, bool check_access, TRAPS) { |
0 | 1268 // normal interface method resolution |
13413 | 1269 resolve_interface_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, true, CHECK); |
0 | 1270 |
1271 assert(resolved_method->name() != vmSymbols::object_initializer_name(), "should have been checked in verifier"); | |
1272 assert(resolved_method->name() != vmSymbols::class_initializer_name (), "should have been checked in verifier"); | |
1273 } | |
1274 | |
1275 // throws runtime exceptions | |
1276 void LinkResolver::runtime_resolve_interface_method(CallInfo& result, methodHandle resolved_method, KlassHandle resolved_klass, | |
1277 Handle recv, KlassHandle recv_klass, bool check_null_and_abstract, TRAPS) { | |
1278 // check if receiver exists | |
1279 if (check_null_and_abstract && recv.is_null()) { | |
1280 THROW(vmSymbols::java_lang_NullPointerException()); | |
1281 } | |
1282 | |
12318
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1283 // check if private interface method |
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1284 if (resolved_klass->is_interface() && resolved_method->is_private()) { |
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1285 ResourceMark rm(THREAD); |
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|
1286 char buf[200]; |
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|
1287 jio_snprintf(buf, sizeof(buf), "private interface method requires invokespecial, not invokeinterface: method %s", |
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1288 Method::name_and_sig_as_C_string(resolved_klass(), |
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1289 resolved_method->name(), |
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|
1290 resolved_method->signature())); |
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|
1291 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); |
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|
1292 } |
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|
1293 |
0 | 1294 // check if receiver klass implements the resolved interface |
1295 if (!recv_klass->is_subtype_of(resolved_klass())) { | |
3324
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|
1296 ResourceMark rm(THREAD); |
0 | 1297 char buf[200]; |
1298 jio_snprintf(buf, sizeof(buf), "Class %s does not implement the requested interface %s", | |
6983 | 1299 recv_klass()->external_name(), |
1300 resolved_klass()->external_name()); | |
0 | 1301 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); |
1302 } | |
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diff
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|
1303 |
0 | 1304 // do lookup based on receiver klass |
1305 methodHandle sel_method; | |
17464
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|
1306 // This search must match the linktime preparation search for itable initialization |
5832cdaf89c6
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|
1307 // to correctly enforce loader constraints for interface method inheritance |
0 | 1308 lookup_instance_method_in_klasses(sel_method, recv_klass, |
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|
1309 resolved_method->name(), |
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|
1310 resolved_method->signature(), CHECK); |
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|
1311 if (sel_method.is_null() && !check_null_and_abstract) { |
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|
1312 // In theory this is a harmless placeholder value, but |
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1313 // in practice leaving in null affects the nsk default method tests. |
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|
1314 // This needs further study. |
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|
1315 sel_method = resolved_method; |
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|
1316 } |
0 | 1317 // check if method exists |
1318 if (sel_method.is_null()) { | |
1319 ResourceMark rm(THREAD); | |
1320 THROW_MSG(vmSymbols::java_lang_AbstractMethodError(), | |
6983 | 1321 Method::name_and_sig_as_C_string(recv_klass(), |
0 | 1322 resolved_method->name(), |
1323 resolved_method->signature())); | |
1324 } | |
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|
1325 // check access |
12318
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1326 // Throw Illegal Access Error if sel_method is not public. |
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1327 if (!sel_method->is_public()) { |
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|
1328 ResourceMark rm(THREAD); |
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|
1329 THROW_MSG(vmSymbols::java_lang_IllegalAccessError(), |
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1330 Method::name_and_sig_as_C_string(recv_klass(), |
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1331 sel_method->name(), |
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1332 sel_method->signature())); |
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1333 } |
0 | 1334 // check if abstract |
1335 if (check_null_and_abstract && sel_method->is_abstract()) { | |
1336 ResourceMark rm(THREAD); | |
1337 THROW_MSG(vmSymbols::java_lang_AbstractMethodError(), | |
6983 | 1338 Method::name_and_sig_as_C_string(recv_klass(), |
0 | 1339 sel_method->name(), |
1340 sel_method->signature())); | |
1341 } | |
12318
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1342 |
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1343 if (TraceItables && Verbose) { |
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|
1344 ResourceMark rm(THREAD); |
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1345 tty->print("invokeinterface selected method: receiver-class:%s, resolved-class:%s, method:%s, method_holder:%s, access_flags: ", |
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1346 (recv_klass.is_null() ? "<NULL>" : recv_klass->internal_name()), |
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1347 (resolved_klass.is_null() ? "<NULL>" : resolved_klass->internal_name()), |
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1348 Method::name_and_sig_as_C_string(resolved_klass(), |
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|
1349 resolved_method->name(), |
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|
1350 resolved_method->signature()), |
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1351 sel_method->method_holder()->internal_name() |
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|
1352 ); |
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|
1353 sel_method->access_flags().print_on(tty); |
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1354 if (sel_method->is_default_method()) { |
13055
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1355 tty->print("default "); |
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1356 } |
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1357 if (sel_method->is_overpass()) { |
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|
1358 tty->print("overpass"); |
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|
1359 } |
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|
1360 tty->cr(); |
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|
1361 } |
13055
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|
1362 // setup result |
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1363 if (!resolved_method->has_itable_index()) { |
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1364 int vtable_index = resolved_method->vtable_index(); |
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1365 assert(vtable_index == sel_method->vtable_index(), "sanity check"); |
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1366 result.set_virtual(resolved_klass, recv_klass, resolved_method, sel_method, vtable_index, CHECK); |
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|
1367 } else { |
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|
1368 int itable_index = resolved_method()->itable_index(); |
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|
1369 result.set_interface(resolved_klass, recv_klass, resolved_method, sel_method, itable_index, CHECK); |
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1370 } |
0 | 1371 } |
1372 | |
1373 | |
1374 methodHandle LinkResolver::linktime_resolve_interface_method_or_null( | |
1375 KlassHandle resolved_klass, | |
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1376 Symbol* method_name, |
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1377 Symbol* method_signature, |
0 | 1378 KlassHandle current_klass, |
1379 bool check_access) { | |
1380 EXCEPTION_MARK; | |
1381 methodHandle method_result; | |
1382 linktime_resolve_interface_method(method_result, resolved_klass, method_name, method_signature, current_klass, check_access, THREAD); | |
1383 if (HAS_PENDING_EXCEPTION) { | |
1384 CLEAR_PENDING_EXCEPTION; | |
1385 return methodHandle(); | |
1386 } else { | |
1387 return method_result; | |
1388 } | |
1389 } | |
1390 | |
1391 methodHandle LinkResolver::linktime_resolve_virtual_method_or_null( | |
1392 KlassHandle resolved_klass, | |
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1393 Symbol* method_name, |
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1394 Symbol* method_signature, |
0 | 1395 KlassHandle current_klass, |
1396 bool check_access) { | |
1397 EXCEPTION_MARK; | |
1398 methodHandle method_result; | |
1399 linktime_resolve_virtual_method(method_result, resolved_klass, method_name, method_signature, current_klass, check_access, THREAD); | |
1400 if (HAS_PENDING_EXCEPTION) { | |
1401 CLEAR_PENDING_EXCEPTION; | |
1402 return methodHandle(); | |
1403 } else { | |
1404 return method_result; | |
1405 } | |
1406 } | |
1407 | |
1408 methodHandle LinkResolver::resolve_virtual_call_or_null( | |
1409 KlassHandle receiver_klass, | |
1410 KlassHandle resolved_klass, | |
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1411 Symbol* name, |
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1412 Symbol* signature, |
0 | 1413 KlassHandle current_klass) { |
1414 EXCEPTION_MARK; | |
1415 CallInfo info; | |
1416 resolve_virtual_call(info, Handle(), receiver_klass, resolved_klass, name, signature, current_klass, true, false, THREAD); | |
1417 if (HAS_PENDING_EXCEPTION) { | |
1418 CLEAR_PENDING_EXCEPTION; | |
1419 return methodHandle(); | |
1420 } | |
1421 return info.selected_method(); | |
1422 } | |
1423 | |
1424 methodHandle LinkResolver::resolve_interface_call_or_null( | |
1425 KlassHandle receiver_klass, | |
1426 KlassHandle resolved_klass, | |
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1427 Symbol* name, |
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1428 Symbol* signature, |
0 | 1429 KlassHandle current_klass) { |
1430 EXCEPTION_MARK; | |
1431 CallInfo info; | |
1432 resolve_interface_call(info, Handle(), receiver_klass, resolved_klass, name, signature, current_klass, true, false, THREAD); | |
1433 if (HAS_PENDING_EXCEPTION) { | |
1434 CLEAR_PENDING_EXCEPTION; | |
1435 return methodHandle(); | |
1436 } | |
1437 return info.selected_method(); | |
1438 } | |
1439 | |
1440 int LinkResolver::resolve_virtual_vtable_index( | |
1441 KlassHandle receiver_klass, | |
1442 KlassHandle resolved_klass, | |
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1443 Symbol* name, |
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1444 Symbol* signature, |
0 | 1445 KlassHandle current_klass) { |
1446 EXCEPTION_MARK; | |
1447 CallInfo info; | |
1448 resolve_virtual_call(info, Handle(), receiver_klass, resolved_klass, name, signature, current_klass, true, false, THREAD); | |
1449 if (HAS_PENDING_EXCEPTION) { | |
1450 CLEAR_PENDING_EXCEPTION; | |
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1451 return Method::invalid_vtable_index; |
0 | 1452 } |
1453 return info.vtable_index(); | |
1454 } | |
1455 | |
1456 methodHandle LinkResolver::resolve_static_call_or_null( | |
1457 KlassHandle resolved_klass, | |
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|
1458 Symbol* name, |
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|
1459 Symbol* signature, |
0 | 1460 KlassHandle current_klass) { |
1461 EXCEPTION_MARK; | |
1462 CallInfo info; | |
1463 resolve_static_call(info, resolved_klass, name, signature, current_klass, true, false, THREAD); | |
1464 if (HAS_PENDING_EXCEPTION) { | |
1465 CLEAR_PENDING_EXCEPTION; | |
1466 return methodHandle(); | |
1467 } | |
1468 return info.selected_method(); | |
1469 } | |
1470 | |
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1471 methodHandle LinkResolver::resolve_special_call_or_null(KlassHandle resolved_klass, Symbol* name, Symbol* signature, |
0 | 1472 KlassHandle current_klass) { |
1473 EXCEPTION_MARK; | |
1474 CallInfo info; | |
1475 resolve_special_call(info, resolved_klass, name, signature, current_klass, true, THREAD); | |
1476 if (HAS_PENDING_EXCEPTION) { | |
1477 CLEAR_PENDING_EXCEPTION; | |
1478 return methodHandle(); | |
1479 } | |
1480 return info.selected_method(); | |
1481 } | |
1482 | |
1483 | |
1484 | |
1485 //------------------------------------------------------------------------------------------------------------------------ | |
1486 // ConstantPool entries | |
1487 | |
1488 void LinkResolver::resolve_invoke(CallInfo& result, Handle recv, constantPoolHandle pool, int index, Bytecodes::Code byte, TRAPS) { | |
1489 switch (byte) { | |
1490 case Bytecodes::_invokestatic : resolve_invokestatic (result, pool, index, CHECK); break; | |
1491 case Bytecodes::_invokespecial : resolve_invokespecial (result, pool, index, CHECK); break; | |
1492 case Bytecodes::_invokevirtual : resolve_invokevirtual (result, recv, pool, index, CHECK); break; | |
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1493 case Bytecodes::_invokehandle : resolve_invokehandle (result, pool, index, CHECK); break; |
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1494 case Bytecodes::_invokedynamic : resolve_invokedynamic (result, pool, index, CHECK); break; |
0 | 1495 case Bytecodes::_invokeinterface: resolve_invokeinterface(result, recv, pool, index, CHECK); break; |
1496 } | |
1497 return; | |
1498 } | |
1499 | |
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1500 void LinkResolver::resolve_pool(KlassHandle& resolved_klass, Symbol*& method_name, Symbol*& method_signature, |
0 | 1501 KlassHandle& current_klass, constantPoolHandle pool, int index, TRAPS) { |
1502 // resolve klass | |
1503 resolve_klass(resolved_klass, pool, index, CHECK); | |
1504 | |
1505 // Get name, signature, and static klass | |
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1506 method_name = pool->name_ref_at(index); |
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1507 method_signature = pool->signature_ref_at(index); |
0 | 1508 current_klass = KlassHandle(THREAD, pool->pool_holder()); |
1509 } | |
1510 | |
1511 | |
1512 void LinkResolver::resolve_invokestatic(CallInfo& result, constantPoolHandle pool, int index, TRAPS) { | |
1513 KlassHandle resolved_klass; | |
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1514 Symbol* method_name = NULL; |
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1515 Symbol* method_signature = NULL; |
0 | 1516 KlassHandle current_klass; |
1517 resolve_pool(resolved_klass, method_name, method_signature, current_klass, pool, index, CHECK); | |
1518 resolve_static_call(result, resolved_klass, method_name, method_signature, current_klass, true, true, CHECK); | |
1519 } | |
1520 | |
1521 | |
1522 void LinkResolver::resolve_invokespecial(CallInfo& result, constantPoolHandle pool, int index, TRAPS) { | |
1523 KlassHandle resolved_klass; | |
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1524 Symbol* method_name = NULL; |
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1525 Symbol* method_signature = NULL; |
0 | 1526 KlassHandle current_klass; |
1527 resolve_pool(resolved_klass, method_name, method_signature, current_klass, pool, index, CHECK); | |
1528 resolve_special_call(result, resolved_klass, method_name, method_signature, current_klass, true, CHECK); | |
1529 } | |
1530 | |
1531 | |
1532 void LinkResolver::resolve_invokevirtual(CallInfo& result, Handle recv, | |
1533 constantPoolHandle pool, int index, | |
1534 TRAPS) { | |
1535 | |
1536 KlassHandle resolved_klass; | |
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1537 Symbol* method_name = NULL; |
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1538 Symbol* method_signature = NULL; |
0 | 1539 KlassHandle current_klass; |
1540 resolve_pool(resolved_klass, method_name, method_signature, current_klass, pool, index, CHECK); | |
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1541 KlassHandle recvrKlass (THREAD, recv.is_null() ? (Klass*)NULL : recv->klass()); |
0 | 1542 resolve_virtual_call(result, recv, recvrKlass, resolved_klass, method_name, method_signature, current_klass, true, true, CHECK); |
1543 } | |
1544 | |
1545 | |
1546 void LinkResolver::resolve_invokeinterface(CallInfo& result, Handle recv, constantPoolHandle pool, int index, TRAPS) { | |
1547 KlassHandle resolved_klass; | |
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1548 Symbol* method_name = NULL; |
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1549 Symbol* method_signature = NULL; |
0 | 1550 KlassHandle current_klass; |
1551 resolve_pool(resolved_klass, method_name, method_signature, current_klass, pool, index, CHECK); | |
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1552 KlassHandle recvrKlass (THREAD, recv.is_null() ? (Klass*)NULL : recv->klass()); |
0 | 1553 resolve_interface_call(result, recv, recvrKlass, resolved_klass, method_name, method_signature, current_klass, true, true, CHECK); |
1554 } | |
1555 | |
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1556 |
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1557 void LinkResolver::resolve_invokehandle(CallInfo& result, constantPoolHandle pool, int index, TRAPS) { |
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1558 assert(EnableInvokeDynamic, ""); |
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1559 // This guy is reached from InterpreterRuntime::resolve_invokehandle. |
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|
1560 KlassHandle resolved_klass; |
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|
1561 Symbol* method_name = NULL; |
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1562 Symbol* method_signature = NULL; |
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1563 KlassHandle current_klass; |
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1564 resolve_pool(resolved_klass, method_name, method_signature, current_klass, pool, index, CHECK); |
9082 | 1565 if (TraceMethodHandles) { |
1566 ResourceMark rm(THREAD); | |
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1567 tty->print_cr("resolve_invokehandle %s %s", method_name->as_C_string(), method_signature->as_C_string()); |
9082 | 1568 } |
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1569 resolve_handle_call(result, resolved_klass, method_name, method_signature, current_klass, CHECK); |
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1570 } |
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1571 |
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1572 void LinkResolver::resolve_handle_call(CallInfo& result, KlassHandle resolved_klass, |
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1573 Symbol* method_name, Symbol* method_signature, |
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1574 KlassHandle current_klass, |
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1575 TRAPS) { |
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1576 // JSR 292: this must be an implicitly generated method MethodHandle.invokeExact(*...) or similar |
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1577 assert(resolved_klass() == SystemDictionary::MethodHandle_klass(), ""); |
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1578 assert(MethodHandles::is_signature_polymorphic_name(method_name), ""); |
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1579 methodHandle resolved_method; |
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1580 Handle resolved_appendix; |
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1581 Handle resolved_method_type; |
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1582 lookup_polymorphic_method(resolved_method, resolved_klass, |
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1583 method_name, method_signature, |
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1584 current_klass, &resolved_appendix, &resolved_method_type, CHECK); |
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1585 result.set_handle(resolved_method, resolved_appendix, resolved_method_type, CHECK); |
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1586 } |
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1587 |
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1588 |
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1589 void LinkResolver::resolve_invokedynamic(CallInfo& result, constantPoolHandle pool, int index, TRAPS) { |
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1590 assert(EnableInvokeDynamic, ""); |
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1591 |
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1592 //resolve_pool(<resolved_klass>, method_name, method_signature, current_klass, pool, index, CHECK); |
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1593 Symbol* method_name = pool->name_ref_at(index); |
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1594 Symbol* method_signature = pool->signature_ref_at(index); |
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1595 KlassHandle current_klass = KlassHandle(THREAD, pool->pool_holder()); |
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1596 |
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1597 // Resolve the bootstrap specifier (BSM + optional arguments). |
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1598 Handle bootstrap_specifier; |
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1599 // Check if CallSite has been bound already: |
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1600 ConstantPoolCacheEntry* cpce = pool->invokedynamic_cp_cache_entry_at(index); |
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1601 if (cpce->is_f1_null()) { |
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1602 int pool_index = cpce->constant_pool_index(); |
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1603 oop bsm_info = pool->resolve_bootstrap_specifier_at(pool_index, CHECK); |
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1604 assert(bsm_info != NULL, ""); |
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1605 // FIXME: Cache this once per BootstrapMethods entry, not once per CONSTANT_InvokeDynamic. |
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1606 bootstrap_specifier = Handle(THREAD, bsm_info); |
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1607 } |
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1608 if (!cpce->is_f1_null()) { |
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1609 methodHandle method( THREAD, cpce->f1_as_method()); |
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1610 Handle appendix( THREAD, cpce->appendix_if_resolved(pool)); |
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1611 Handle method_type(THREAD, cpce->method_type_if_resolved(pool)); |
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1612 result.set_handle(method, appendix, method_type, CHECK); |
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1613 return; |
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1614 } |
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1615 |
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1616 if (TraceMethodHandles) { |
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1617 ResourceMark rm(THREAD); |
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1618 tty->print_cr("resolve_invokedynamic #%d %s %s", |
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1619 ConstantPool::decode_invokedynamic_index(index), |
6266
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1620 method_name->as_C_string(), method_signature->as_C_string()); |
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1621 tty->print(" BSM info: "); bootstrap_specifier->print(); |
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1622 } |
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1623 |
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1624 resolve_dynamic_call(result, bootstrap_specifier, method_name, method_signature, current_klass, CHECK); |
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1625 } |
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|
1626 |
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|
1627 void LinkResolver::resolve_dynamic_call(CallInfo& result, |
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|
1628 Handle bootstrap_specifier, |
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|
1629 Symbol* method_name, Symbol* method_signature, |
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|
1630 KlassHandle current_klass, |
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|
1631 TRAPS) { |
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|
1632 // JSR 292: this must resolve to an implicitly generated method MH.linkToCallSite(*...) |
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|
1633 // The appendix argument is likely to be a freshly-created CallSite. |
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|
1634 Handle resolved_appendix; |
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|
1635 Handle resolved_method_type; |
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|
1636 methodHandle resolved_method = |
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|
1637 SystemDictionary::find_dynamic_call_site_invoker(current_klass, |
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|
1638 bootstrap_specifier, |
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|
1639 method_name, method_signature, |
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|
1640 &resolved_appendix, |
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|
1641 &resolved_method_type, |
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|
1642 THREAD); |
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|
1643 if (HAS_PENDING_EXCEPTION) { |
6266
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|
1644 if (TraceMethodHandles) { |
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|
1645 tty->print_cr("invokedynamic throws BSME for " INTPTR_FORMAT, p2i((void *)PENDING_EXCEPTION)); |
6266
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|
1646 PENDING_EXCEPTION->print(); |
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|
1647 } |
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|
1648 if (PENDING_EXCEPTION->is_a(SystemDictionary::BootstrapMethodError_klass())) { |
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|
1649 // throw these guys, since they are already wrapped |
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|
1650 return; |
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|
1651 } |
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|
1652 if (!PENDING_EXCEPTION->is_a(SystemDictionary::LinkageError_klass())) { |
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|
1653 // intercept only LinkageErrors which might have failed to wrap |
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|
1654 return; |
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|
1655 } |
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|
1656 // See the "Linking Exceptions" section for the invokedynamic instruction in the JVMS. |
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|
1657 Handle nested_exception(THREAD, PENDING_EXCEPTION); |
3744
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|
1658 CLEAR_PENDING_EXCEPTION; |
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|
1659 THROW_CAUSE(vmSymbols::java_lang_BootstrapMethodError(), nested_exception) |
3744
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|
1660 } |
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|
1661 result.set_handle(resolved_method, resolved_appendix, resolved_method_type, CHECK); |
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|
1662 } |
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|
1663 |
0 | 1664 //------------------------------------------------------------------------------------------------------------------------ |
1665 #ifndef PRODUCT | |
1666 | |
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|
1667 void CallInfo::print() { |
0 | 1668 ResourceMark rm; |
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|
1669 const char* kindstr = "unknown"; |
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|
1670 switch (_call_kind) { |
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|
1671 case direct_call: kindstr = "direct"; break; |
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|
1672 case vtable_call: kindstr = "vtable"; break; |
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|
1673 case itable_call: kindstr = "itable"; break; |
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|
1674 } |
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|
1675 tty->print_cr("Call %s@%d %s", kindstr, _call_index, |
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|
1676 _resolved_method.is_null() ? "(none)" : _resolved_method->name_and_sig_as_C_string()); |
0 | 1677 } |
1678 | |
1679 #endif |