Mercurial > hg > truffle
annotate src/share/vm/interpreter/linkResolver.cpp @ 15844:d1822a8fe26f
minor cleanups
author | Tom Rodriguez <tom.rodriguez@oracle.com> |
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date | Wed, 21 May 2014 22:44:46 -0700 |
parents | a20be10ad437 |
children | 89152779163c |
rev | line source |
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0 | 1 /* |
14909 | 2 * Copyright (c) 1997, 2013, Oracle and/or its affiliates. All rights reserved. |
0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
4 * | |
5 * This code is free software; you can redistribute it and/or modify it | |
6 * under the terms of the GNU General Public License version 2 only, as | |
7 * published by the Free Software Foundation. | |
8 * | |
9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
12 * version 2 for more details (a copy is included in the LICENSE file that | |
13 * accompanied this code). | |
14 * | |
15 * You should have received a copy of the GNU General Public License version | |
16 * 2 along with this work; if not, write to the Free Software Foundation, | |
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
18 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
1972 | 25 #include "precompiled.hpp" |
6934 | 26 #include "classfile/defaultMethods.hpp" |
1972 | 27 #include "classfile/systemDictionary.hpp" |
28 #include "classfile/vmSymbols.hpp" | |
29 #include "compiler/compileBroker.hpp" | |
30 #include "gc_interface/collectedHeap.inline.hpp" | |
31 #include "interpreter/bytecode.hpp" | |
32 #include "interpreter/interpreterRuntime.hpp" | |
33 #include "interpreter/linkResolver.hpp" | |
34 #include "memory/resourceArea.hpp" | |
35 #include "memory/universe.inline.hpp" | |
36 #include "oops/instanceKlass.hpp" | |
37 #include "oops/objArrayOop.hpp" | |
38 #include "prims/methodHandles.hpp" | |
39 #include "prims/nativeLookup.hpp" | |
40 #include "runtime/compilationPolicy.hpp" | |
41 #include "runtime/fieldDescriptor.hpp" | |
42 #include "runtime/frame.inline.hpp" | |
43 #include "runtime/handles.inline.hpp" | |
44 #include "runtime/reflection.hpp" | |
45 #include "runtime/signature.hpp" | |
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46 #include "runtime/thread.inline.hpp" |
1972 | 47 #include "runtime/vmThread.hpp" |
0 | 48 |
49 | |
50 //------------------------------------------------------------------------------------------------------------------------ | |
51 // Implementation of CallInfo | |
52 | |
53 | |
54 void CallInfo::set_static(KlassHandle resolved_klass, methodHandle resolved_method, TRAPS) { | |
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55 int vtable_index = Method::nonvirtual_vtable_index; |
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56 set_common(resolved_klass, resolved_klass, resolved_method, resolved_method, CallInfo::direct_call, vtable_index, CHECK); |
0 | 57 } |
58 | |
59 | |
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60 void CallInfo::set_interface(KlassHandle resolved_klass, KlassHandle selected_klass, methodHandle resolved_method, methodHandle selected_method, int itable_index, TRAPS) { |
0 | 61 // This is only called for interface methods. If the resolved_method |
62 // comes from java/lang/Object, it can be the subject of a virtual call, so | |
63 // we should pick the vtable index from the resolved method. | |
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64 // In that case, the caller must call set_virtual instead of set_interface. |
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65 assert(resolved_method->method_holder()->is_interface(), ""); |
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66 assert(itable_index == resolved_method()->itable_index(), ""); |
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67 set_common(resolved_klass, selected_klass, resolved_method, selected_method, CallInfo::itable_call, itable_index, CHECK); |
0 | 68 } |
69 | |
70 void CallInfo::set_virtual(KlassHandle resolved_klass, KlassHandle selected_klass, methodHandle resolved_method, methodHandle selected_method, int vtable_index, TRAPS) { | |
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71 assert(vtable_index >= 0 || vtable_index == Method::nonvirtual_vtable_index, "valid index"); |
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72 assert(vtable_index < 0 || !resolved_method->has_vtable_index() || vtable_index == resolved_method->vtable_index(), ""); |
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73 CallKind kind = (vtable_index >= 0 && !resolved_method->can_be_statically_bound() ? CallInfo::vtable_call : CallInfo::direct_call); |
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74 set_common(resolved_klass, selected_klass, resolved_method, selected_method, kind, vtable_index, CHECK); |
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75 assert(!resolved_method->is_compiled_lambda_form(), "these must be handled via an invokehandle call"); |
0 | 76 } |
77 | |
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78 void CallInfo::set_handle(methodHandle resolved_method, Handle resolved_appendix, Handle resolved_method_type, TRAPS) { |
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79 if (resolved_method.is_null()) { |
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80 THROW_MSG(vmSymbols::java_lang_InternalError(), "resolved method is null"); |
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81 } |
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82 KlassHandle resolved_klass = SystemDictionary::MethodHandle_klass(); |
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83 assert(resolved_method->intrinsic_id() == vmIntrinsics::_invokeBasic || |
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84 resolved_method->is_compiled_lambda_form(), |
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85 "linkMethod must return one of these"); |
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86 int vtable_index = Method::nonvirtual_vtable_index; |
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87 assert(!resolved_method->has_vtable_index(), ""); |
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88 set_common(resolved_klass, resolved_klass, resolved_method, resolved_method, CallInfo::direct_call, vtable_index, CHECK); |
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89 _resolved_appendix = resolved_appendix; |
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90 _resolved_method_type = resolved_method_type; |
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91 } |
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92 |
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93 void CallInfo::set_common(KlassHandle resolved_klass, |
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94 KlassHandle selected_klass, |
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95 methodHandle resolved_method, |
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96 methodHandle selected_method, |
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97 CallKind kind, |
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98 int index, |
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99 TRAPS) { |
0 | 100 assert(resolved_method->signature() == selected_method->signature(), "signatures must correspond"); |
101 _resolved_klass = resolved_klass; | |
102 _selected_klass = selected_klass; | |
103 _resolved_method = resolved_method; | |
104 _selected_method = selected_method; | |
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105 _call_kind = kind; |
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106 _call_index = index; |
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107 _resolved_appendix = Handle(); |
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108 DEBUG_ONLY(verify()); // verify before making side effects |
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109 |
1783 | 110 if (CompilationPolicy::must_be_compiled(selected_method)) { |
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111 // This path is unusual, mostly used by the '-Xcomp' stress test mode. |
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112 |
1783 | 113 // Note: with several active threads, the must_be_compiled may be true |
114 // while can_be_compiled is false; remove assert | |
115 // assert(CompilationPolicy::can_be_compiled(selected_method), "cannot compile"); | |
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116 if (!THREAD->can_call_java()) { |
0 | 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 Method* result_oop = klass->uncached_lookup_method(name, signature); |
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247 |
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248 // JDK 8, JVMS 5.4.3.4: Interface method resolution should |
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249 // ignore static and non-public methods of java.lang.Object, |
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250 // like clone, finalize, registerNatives. |
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251 if (in_imethod_resolve && |
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252 result_oop != NULL && |
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253 klass->is_interface() && |
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254 (result_oop->is_static() || !result_oop->is_public()) && |
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255 result_oop->method_holder() == SystemDictionary::Object_klass()) { |
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256 result_oop = NULL; |
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257 } |
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258 |
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259 if (result_oop == NULL) { |
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260 Array<Method*>* default_methods = InstanceKlass::cast(klass())->default_methods(); |
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261 if (default_methods != NULL) { |
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262 result_oop = InstanceKlass::find_method(default_methods, name, signature); |
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263 } |
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264 } |
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265 |
13413 | 266 if (checkpolymorphism && EnableInvokeDynamic && result_oop != NULL) { |
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267 vmIntrinsics::ID iid = result_oop->intrinsic_id(); |
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268 if (MethodHandles::is_signature_polymorphic(iid)) { |
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269 // Do not link directly to these. The VM must produce a synthetic one using lookup_polymorphic_method. |
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270 return; |
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271 } |
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272 } |
0 | 273 result = methodHandle(THREAD, result_oop); |
274 } | |
275 | |
276 // returns first instance method | |
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277 // Looks up method in classes, then looks up local default methods |
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278 void LinkResolver::lookup_instance_method_in_klasses(methodHandle& result, KlassHandle klass, Symbol* name, Symbol* signature, TRAPS) { |
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279 Method* result_oop = klass->uncached_lookup_method(name, signature); |
0 | 280 result = methodHandle(THREAD, result_oop); |
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281 while (!result.is_null() && result->is_static() && result->method_holder()->super() != NULL) { |
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282 KlassHandle super_klass = KlassHandle(THREAD, result->method_holder()->super()); |
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283 result = methodHandle(THREAD, super_klass->uncached_lookup_method(name, signature)); |
0 | 284 } |
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285 |
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286 if (result.is_null()) { |
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287 Array<Method*>* default_methods = InstanceKlass::cast(klass())->default_methods(); |
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288 if (default_methods != NULL) { |
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289 result = methodHandle(InstanceKlass::find_method(default_methods, name, signature)); |
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290 assert(result.is_null() || !result->is_static(), "static defaults not allowed"); |
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291 } |
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292 } |
0 | 293 } |
294 | |
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295 int LinkResolver::vtable_index_of_interface_method(KlassHandle klass, |
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296 methodHandle resolved_method) { |
0 | 297 |
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298 int vtable_index = Method::invalid_vtable_index; |
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299 Symbol* name = resolved_method->name(); |
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300 Symbol* signature = resolved_method->signature(); |
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301 |
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302 // First check in default method array |
14909 | 303 if (!resolved_method->is_abstract() && |
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304 (InstanceKlass::cast(klass())->default_methods() != NULL)) { |
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305 int index = InstanceKlass::find_method_index(InstanceKlass::cast(klass())->default_methods(), name, signature); |
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306 if (index >= 0 ) { |
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307 vtable_index = InstanceKlass::cast(klass())->default_vtable_indices()->at(index); |
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308 } |
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309 } |
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310 if (vtable_index == Method::invalid_vtable_index) { |
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311 // get vtable_index for miranda methods |
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312 ResourceMark rm; |
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313 klassVtable *vt = InstanceKlass::cast(klass())->vtable(); |
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314 vtable_index = vt->index_of_miranda(name, signature); |
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315 } |
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316 return vtable_index; |
0 | 317 } |
318 | |
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319 void LinkResolver::lookup_method_in_interfaces(methodHandle& result, KlassHandle klass, Symbol* name, Symbol* signature, TRAPS) { |
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320 InstanceKlass *ik = InstanceKlass::cast(klass()); |
14909 | 321 result = methodHandle(THREAD, ik->lookup_method_in_all_interfaces(name, signature)); |
0 | 322 } |
323 | |
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324 void LinkResolver::lookup_polymorphic_method(methodHandle& result, |
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325 KlassHandle klass, Symbol* name, Symbol* full_signature, |
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326 KlassHandle current_klass, |
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327 Handle *appendix_result_or_null, |
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328 Handle *method_type_result, |
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329 TRAPS) { |
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330 vmIntrinsics::ID iid = MethodHandles::signature_polymorphic_name_id(name); |
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331 if (TraceMethodHandles) { |
9082 | 332 ResourceMark rm(THREAD); |
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333 tty->print_cr("lookup_polymorphic_method iid=%s %s.%s%s", |
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334 vmIntrinsics::name_at(iid), klass->external_name(), |
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335 name->as_C_string(), full_signature->as_C_string()); |
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336 } |
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337 if (EnableInvokeDynamic && |
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338 klass() == SystemDictionary::MethodHandle_klass() && |
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339 iid != vmIntrinsics::_none) { |
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340 if (MethodHandles::is_signature_polymorphic_intrinsic(iid)) { |
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341 // Most of these do not need an up-call to Java to resolve, so can be done anywhere. |
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342 // Do not erase last argument type (MemberName) if it is a static linkTo method. |
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343 bool keep_last_arg = MethodHandles::is_signature_polymorphic_static(iid); |
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344 TempNewSymbol basic_signature = |
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345 MethodHandles::lookup_basic_type_signature(full_signature, keep_last_arg, CHECK); |
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346 if (TraceMethodHandles) { |
9082 | 347 ResourceMark rm(THREAD); |
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348 tty->print_cr("lookup_polymorphic_method %s %s => basic %s", |
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349 name->as_C_string(), |
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350 full_signature->as_C_string(), |
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351 basic_signature->as_C_string()); |
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352 } |
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353 result = SystemDictionary::find_method_handle_intrinsic(iid, |
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354 basic_signature, |
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355 CHECK); |
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356 if (result.not_null()) { |
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357 assert(result->is_method_handle_intrinsic(), "MH.invokeBasic or MH.linkTo* intrinsic"); |
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358 assert(result->intrinsic_id() != vmIntrinsics::_invokeGeneric, "wrong place to find this"); |
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359 assert(basic_signature == result->signature(), "predict the result signature"); |
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360 if (TraceMethodHandles) { |
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361 tty->print("lookup_polymorphic_method => intrinsic "); |
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362 result->print_on(tty); |
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363 } |
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364 return; |
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365 } |
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366 } else if (iid == vmIntrinsics::_invokeGeneric |
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367 && THREAD->can_call_java() |
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368 && appendix_result_or_null != NULL) { |
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369 // This is a method with type-checking semantics. |
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370 // We will ask Java code to spin an adapter method for it. |
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371 if (!MethodHandles::enabled()) { |
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372 // Make sure the Java part of the runtime has been booted up. |
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373 Klass* natives = SystemDictionary::MethodHandleNatives_klass(); |
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374 if (natives == NULL || InstanceKlass::cast(natives)->is_not_initialized()) { |
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375 SystemDictionary::resolve_or_fail(vmSymbols::java_lang_invoke_MethodHandleNatives(), |
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376 Handle(), |
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377 Handle(), |
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378 true, |
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379 CHECK); |
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380 } |
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381 } |
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382 |
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383 Handle appendix; |
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384 Handle method_type; |
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385 result = SystemDictionary::find_method_handle_invoker(name, |
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386 full_signature, |
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387 current_klass, |
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388 &appendix, |
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389 &method_type, |
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390 CHECK); |
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391 if (TraceMethodHandles) { |
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392 tty->print("lookup_polymorphic_method => (via Java) "); |
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393 result->print_on(tty); |
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394 tty->print(" lookup_polymorphic_method => appendix = "); |
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395 if (appendix.is_null()) tty->print_cr("(none)"); |
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396 else appendix->print_on(tty); |
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397 } |
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398 if (result.not_null()) { |
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399 #ifdef ASSERT |
9082 | 400 ResourceMark rm(THREAD); |
401 | |
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402 TempNewSymbol basic_signature = |
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403 MethodHandles::lookup_basic_type_signature(full_signature, CHECK); |
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404 int actual_size_of_params = result->size_of_parameters(); |
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405 int expected_size_of_params = ArgumentSizeComputer(basic_signature).size(); |
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406 // +1 for MethodHandle.this, +1 for trailing MethodType |
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407 if (!MethodHandles::is_signature_polymorphic_static(iid)) expected_size_of_params += 1; |
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408 if (appendix.not_null()) expected_size_of_params += 1; |
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409 if (actual_size_of_params != expected_size_of_params) { |
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410 tty->print_cr("*** basic_signature=%s", basic_signature->as_C_string()); |
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411 tty->print_cr("*** result for %s: ", vmIntrinsics::name_at(iid)); |
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412 result->print(); |
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413 } |
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414 assert(actual_size_of_params == expected_size_of_params, |
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415 err_msg("%d != %d", actual_size_of_params, expected_size_of_params)); |
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416 #endif //ASSERT |
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417 |
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418 assert(appendix_result_or_null != NULL, ""); |
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419 (*appendix_result_or_null) = appendix; |
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420 (*method_type_result) = method_type; |
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421 return; |
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422 } |
710 | 423 } |
424 } | |
425 } | |
426 | |
0 | 427 void LinkResolver::check_method_accessability(KlassHandle ref_klass, |
428 KlassHandle resolved_klass, | |
429 KlassHandle sel_klass, | |
430 methodHandle sel_method, | |
431 TRAPS) { | |
432 | |
433 AccessFlags flags = sel_method->access_flags(); | |
434 | |
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435 // Special case: arrays always override "clone". JVMS 2.15. |
0 | 436 // If the resolved klass is an array class, and the declaring class |
437 // is java.lang.Object and the method is "clone", set the flags | |
438 // to public. | |
439 // | |
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440 // We'll check for the method name first, as that's most likely |
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441 // to be false (so we'll short-circuit out of these tests). |
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442 if (sel_method->name() == vmSymbols::clone_name() && |
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443 sel_klass() == SystemDictionary::Object_klass() && |
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444 resolved_klass->oop_is_array()) { |
0 | 445 // We need to change "protected" to "public". |
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446 assert(flags.is_protected(), "clone not protected?"); |
0 | 447 jint new_flags = flags.as_int(); |
448 new_flags = new_flags & (~JVM_ACC_PROTECTED); | |
449 new_flags = new_flags | JVM_ACC_PUBLIC; | |
450 flags.set_flags(new_flags); | |
451 } | |
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452 // assert(extra_arg_result_or_null != NULL, "must be able to return extra argument"); |
0 | 453 |
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454 if (!Reflection::verify_field_access(ref_klass(), |
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455 resolved_klass(), |
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456 sel_klass(), |
0 | 457 flags, |
458 true)) { | |
459 ResourceMark rm(THREAD); | |
460 Exceptions::fthrow( | |
461 THREAD_AND_LOCATION, | |
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462 vmSymbols::java_lang_IllegalAccessError(), |
0 | 463 "tried to access method %s.%s%s from class %s", |
464 sel_klass->external_name(), | |
465 sel_method->name()->as_C_string(), | |
466 sel_method->signature()->as_C_string(), | |
467 ref_klass->external_name() | |
468 ); | |
469 return; | |
470 } | |
471 } | |
472 | |
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473 void LinkResolver::resolve_method_statically(methodHandle& resolved_method, KlassHandle& resolved_klass, |
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474 Bytecodes::Code code, constantPoolHandle pool, int index, TRAPS) { |
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475 // This method is used only |
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476 // (1) in C2 from InlineTree::ok_to_inline (via ciMethod::check_call), |
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477 // and |
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478 // (2) in Bytecode_invoke::static_target |
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479 // It appears to fail when applied to an invokeinterface call site. |
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480 // FIXME: Remove this method and ciMethod::check_call; refactor to use the other LinkResolver entry points. |
0 | 481 // resolve klass |
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482 if (code == Bytecodes::_invokedynamic) { |
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483 resolved_klass = SystemDictionary::MethodHandle_klass(); |
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484 Symbol* method_name = vmSymbols::invoke_name(); |
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485 Symbol* method_signature = pool->signature_ref_at(index); |
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486 KlassHandle current_klass(THREAD, pool->pool_holder()); |
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487 resolve_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, true, false, CHECK); |
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488 return; |
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489 } |
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490 |
0 | 491 resolve_klass(resolved_klass, pool, index, CHECK); |
492 | |
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493 Symbol* method_name = pool->name_ref_at(index); |
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494 Symbol* method_signature = pool->signature_ref_at(index); |
0 | 495 KlassHandle current_klass(THREAD, pool->pool_holder()); |
496 | |
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497 if (pool->has_preresolution() |
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498 || (resolved_klass() == SystemDictionary::MethodHandle_klass() && |
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499 MethodHandles::is_signature_polymorphic_name(resolved_klass(), method_name))) { |
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500 Method* result_oop = ConstantPool::method_at_if_loaded(pool, index); |
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501 if (result_oop != NULL) { |
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502 resolved_method = methodHandle(THREAD, result_oop); |
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503 return; |
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504 } |
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505 } |
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506 |
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507 if (code == Bytecodes::_invokeinterface) { |
13413 | 508 resolve_interface_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, true, true, CHECK); |
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509 } else if (code == Bytecodes::_invokevirtual) { |
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510 resolve_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, true, true, CHECK); |
13413 | 511 } else if (!resolved_klass->is_interface()) { |
512 resolve_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, true, false, CHECK); | |
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513 } else { |
13413 | 514 bool nostatics = (code == Bytecodes::_invokestatic) ? false : true; |
515 resolve_interface_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, true, nostatics, CHECK); | |
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516 } |
0 | 517 } |
518 | |
519 void LinkResolver::resolve_method(methodHandle& resolved_method, KlassHandle resolved_klass, | |
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520 Symbol* method_name, Symbol* method_signature, |
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521 KlassHandle current_klass, bool check_access, |
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522 bool require_methodref, TRAPS) { |
0 | 523 |
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524 Handle nested_exception; |
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525 |
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526 // 1. check if methodref required, that resolved_klass is not interfacemethodref |
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527 if (require_methodref && resolved_klass->is_interface()) { |
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528 ResourceMark rm(THREAD); |
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529 char buf[200]; |
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530 jio_snprintf(buf, sizeof(buf), "Found interface %s, but class was expected", |
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531 resolved_klass()->external_name()); |
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532 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); |
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533 } |
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534 |
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535 // 2. lookup method in resolved klass and its super klasses |
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536 lookup_method_in_klasses(resolved_method, resolved_klass, method_name, method_signature, true, false, CHECK); |
0 | 537 |
538 if (resolved_method.is_null()) { // not found in the class hierarchy | |
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539 // 3. lookup method in all the interfaces implemented by the resolved klass |
0 | 540 lookup_method_in_interfaces(resolved_method, resolved_klass, method_name, method_signature, CHECK); |
541 | |
542 if (resolved_method.is_null()) { | |
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543 // JSR 292: see if this is an implicitly generated method MethodHandle.linkToVirtual(*...), etc |
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544 lookup_polymorphic_method(resolved_method, resolved_klass, method_name, method_signature, |
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545 current_klass, (Handle*)NULL, (Handle*)NULL, THREAD); |
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546 if (HAS_PENDING_EXCEPTION) { |
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547 nested_exception = Handle(THREAD, PENDING_EXCEPTION); |
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548 CLEAR_PENDING_EXCEPTION; |
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549 } |
710 | 550 } |
551 | |
552 if (resolved_method.is_null()) { | |
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553 // 4. method lookup failed |
0 | 554 ResourceMark rm(THREAD); |
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555 THROW_MSG_CAUSE(vmSymbols::java_lang_NoSuchMethodError(), |
6983 | 556 Method::name_and_sig_as_C_string(resolved_klass(), |
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557 method_name, |
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558 method_signature), |
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559 nested_exception); |
0 | 560 } |
561 } | |
562 | |
14909 | 563 // 5. check if method is concrete |
564 if (resolved_method->is_abstract() && !resolved_klass->is_abstract()) { | |
565 ResourceMark rm(THREAD); | |
566 THROW_MSG(vmSymbols::java_lang_AbstractMethodError(), | |
567 Method::name_and_sig_as_C_string(resolved_klass(), | |
568 method_name, | |
569 method_signature)); | |
570 } | |
571 | |
572 // 6. access checks, access checking may be turned off when calling from within the VM. | |
0 | 573 if (check_access) { |
574 assert(current_klass.not_null() , "current_klass should not be null"); | |
575 | |
576 // check if method can be accessed by the referring class | |
577 check_method_accessability(current_klass, | |
578 resolved_klass, | |
579 KlassHandle(THREAD, resolved_method->method_holder()), | |
580 resolved_method, | |
581 CHECK); | |
582 | |
583 // check loader constraints | |
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584 Handle loader (THREAD, InstanceKlass::cast(current_klass())->class_loader()); |
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585 Handle class_loader (THREAD, resolved_method->method_holder()->class_loader()); |
0 | 586 { |
587 ResourceMark rm(THREAD); | |
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588 Symbol* failed_type_symbol = |
0 | 589 SystemDictionary::check_signature_loaders(method_signature, loader, |
590 class_loader, true, CHECK); | |
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591 if (failed_type_symbol != NULL) { |
0 | 592 const char* msg = "loader constraint violation: when resolving method" |
593 " \"%s\" the class loader (instance of %s) of the current class, %s," | |
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594 " and the class loader (instance of %s) for the method's defining class, %s, have" |
0 | 595 " different Class objects for the type %s used in the signature"; |
6983 | 596 char* sig = Method::name_and_sig_as_C_string(resolved_klass(),method_name,method_signature); |
0 | 597 const char* loader1 = SystemDictionary::loader_name(loader()); |
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598 char* current = InstanceKlass::cast(current_klass())->name()->as_C_string(); |
0 | 599 const char* loader2 = SystemDictionary::loader_name(class_loader()); |
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600 char* target = InstanceKlass::cast(resolved_method->method_holder()) |
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601 ->name()->as_C_string(); |
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602 char* failed_type_name = failed_type_symbol->as_C_string(); |
0 | 603 size_t buflen = strlen(msg) + strlen(sig) + strlen(loader1) + |
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604 strlen(current) + strlen(loader2) + strlen(target) + |
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605 strlen(failed_type_name) + 1; |
0 | 606 char* buf = NEW_RESOURCE_ARRAY_IN_THREAD(THREAD, char, buflen); |
607 jio_snprintf(buf, buflen, msg, sig, loader1, current, loader2, | |
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608 target, failed_type_name); |
0 | 609 THROW_MSG(vmSymbols::java_lang_LinkageError(), buf); |
610 } | |
611 } | |
612 } | |
613 } | |
614 | |
615 void LinkResolver::resolve_interface_method(methodHandle& resolved_method, | |
616 KlassHandle resolved_klass, | |
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617 Symbol* method_name, |
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618 Symbol* method_signature, |
0 | 619 KlassHandle current_klass, |
13413 | 620 bool check_access, |
621 bool nostatics, TRAPS) { | |
0 | 622 |
14909 | 623 // check if klass is interface |
0 | 624 if (!resolved_klass->is_interface()) { |
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625 ResourceMark rm(THREAD); |
0 | 626 char buf[200]; |
6983 | 627 jio_snprintf(buf, sizeof(buf), "Found class %s, but interface was expected", resolved_klass()->external_name()); |
0 | 628 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); |
629 } | |
630 | |
631 // lookup method in this interface or its super, java.lang.Object | |
13413 | 632 // JDK8: also look for static methods |
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633 lookup_method_in_klasses(resolved_method, resolved_klass, method_name, method_signature, false, true, CHECK); |
0 | 634 |
635 if (resolved_method.is_null()) { | |
636 // lookup method in all the super-interfaces | |
637 lookup_method_in_interfaces(resolved_method, resolved_klass, method_name, method_signature, CHECK); | |
638 if (resolved_method.is_null()) { | |
639 // no method found | |
640 ResourceMark rm(THREAD); | |
641 THROW_MSG(vmSymbols::java_lang_NoSuchMethodError(), | |
6983 | 642 Method::name_and_sig_as_C_string(resolved_klass(), |
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643 method_name, |
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644 method_signature)); |
0 | 645 } |
646 } | |
647 | |
14909 | 648 if (nostatics && resolved_method->is_static()) { |
649 ResourceMark rm(THREAD); | |
650 char buf[200]; | |
651 jio_snprintf(buf, sizeof(buf), "Expected instance not static method %s", Method::name_and_sig_as_C_string(resolved_klass(), | |
652 resolved_method->name(), | |
653 resolved_method->signature())); | |
654 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); | |
655 } | |
656 | |
657 | |
0 | 658 if (check_access) { |
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659 // JDK8 adds non-public interface methods, and accessability check requirement |
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660 assert(current_klass.not_null() , "current_klass should not be null"); |
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661 |
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662 // check if method can be accessed by the referring class |
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663 check_method_accessability(current_klass, |
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664 resolved_klass, |
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665 KlassHandle(THREAD, resolved_method->method_holder()), |
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666 resolved_method, |
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667 CHECK); |
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668 |
0 | 669 HandleMark hm(THREAD); |
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670 Handle loader (THREAD, InstanceKlass::cast(current_klass())->class_loader()); |
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671 Handle class_loader (THREAD, resolved_method->method_holder()->class_loader()); |
0 | 672 { |
673 ResourceMark rm(THREAD); | |
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674 Symbol* failed_type_symbol = |
0 | 675 SystemDictionary::check_signature_loaders(method_signature, loader, |
676 class_loader, true, CHECK); | |
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677 if (failed_type_symbol != NULL) { |
0 | 678 const char* msg = "loader constraint violation: when resolving " |
679 "interface method \"%s\" the class loader (instance of %s) of the " | |
680 "current class, %s, and the class loader (instance of %s) for " | |
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681 "the method's defining class, %s, have different Class objects for the type %s " |
0 | 682 "used in the signature"; |
6983 | 683 char* sig = Method::name_and_sig_as_C_string(resolved_klass(),method_name,method_signature); |
0 | 684 const char* loader1 = SystemDictionary::loader_name(loader()); |
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685 char* current = InstanceKlass::cast(current_klass())->name()->as_C_string(); |
0 | 686 const char* loader2 = SystemDictionary::loader_name(class_loader()); |
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687 char* target = InstanceKlass::cast(resolved_method->method_holder()) |
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688 ->name()->as_C_string(); |
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689 char* failed_type_name = failed_type_symbol->as_C_string(); |
0 | 690 size_t buflen = strlen(msg) + strlen(sig) + strlen(loader1) + |
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691 strlen(current) + strlen(loader2) + strlen(target) + |
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692 strlen(failed_type_name) + 1; |
0 | 693 char* buf = NEW_RESOURCE_ARRAY_IN_THREAD(THREAD, char, buflen); |
694 jio_snprintf(buf, buflen, msg, sig, loader1, current, loader2, | |
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695 target, failed_type_name); |
0 | 696 THROW_MSG(vmSymbols::java_lang_LinkageError(), buf); |
697 } | |
698 } | |
699 } | |
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700 |
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701 if (TraceItables && Verbose) { |
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702 ResourceMark rm(THREAD); |
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703 tty->print("invokeinterface resolved method: caller-class:%s, compile-time-class:%s, method:%s, method_holder:%s, access_flags: ", |
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704 (current_klass.is_null() ? "<NULL>" : current_klass->internal_name()), |
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705 (resolved_klass.is_null() ? "<NULL>" : resolved_klass->internal_name()), |
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706 Method::name_and_sig_as_C_string(resolved_klass(), |
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707 resolved_method->name(), |
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708 resolved_method->signature()), |
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709 resolved_method->method_holder()->internal_name() |
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710 ); |
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711 resolved_method->access_flags().print_on(tty); |
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712 if (resolved_method->is_default_method()) { |
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713 tty->print("default "); |
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714 } |
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715 if (resolved_method->is_overpass()) { |
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716 tty->print("overpass"); |
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717 } |
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718 tty->cr(); |
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719 } |
0 | 720 } |
721 | |
722 //------------------------------------------------------------------------------------------------------------------------ | |
723 // Field resolution | |
724 | |
725 void LinkResolver::check_field_accessability(KlassHandle ref_klass, | |
726 KlassHandle resolved_klass, | |
727 KlassHandle sel_klass, | |
728 fieldDescriptor& fd, | |
729 TRAPS) { | |
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730 if (!Reflection::verify_field_access(ref_klass(), |
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731 resolved_klass(), |
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732 sel_klass(), |
0 | 733 fd.access_flags(), |
734 true)) { | |
735 ResourceMark rm(THREAD); | |
736 Exceptions::fthrow( | |
737 THREAD_AND_LOCATION, | |
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738 vmSymbols::java_lang_IllegalAccessError(), |
0 | 739 "tried to access field %s.%s from class %s", |
740 sel_klass->external_name(), | |
741 fd.name()->as_C_string(), | |
742 ref_klass->external_name() | |
743 ); | |
744 return; | |
745 } | |
746 } | |
747 | |
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748 void LinkResolver::resolve_field_access(fieldDescriptor& result, constantPoolHandle pool, int index, Bytecodes::Code byte, TRAPS) { |
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749 resolve_field_access(result, pool, index, byte, true, true, THREAD); |
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750 } |
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751 |
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752 void LinkResolver::resolve_field_access(fieldDescriptor& result, constantPoolHandle pool, int index, Bytecodes::Code byte, bool check_access, bool initialize_class, TRAPS) { |
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753 // Load these early in case the resolve of the containing klass fails |
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754 Symbol* field = pool->name_ref_at(index); |
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755 Symbol* sig = pool->signature_ref_at(index); |
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756 |
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757 // resolve specified klass |
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758 KlassHandle resolved_klass; |
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759 resolve_klass(resolved_klass, pool, index, CHECK); |
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760 |
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761 KlassHandle current_klass(THREAD, pool->pool_holder()); |
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762 resolve_field(result, resolved_klass, field, sig, current_klass, byte, check_access, initialize_class, CHECK); |
0 | 763 } |
764 | |
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765 void LinkResolver::resolve_field(fieldDescriptor& fd, KlassHandle resolved_klass, Symbol* field, Symbol* sig, |
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766 KlassHandle current_klass, Bytecodes::Code byte, bool check_access, bool initialize_class, |
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767 TRAPS) { |
0 | 768 assert(byte == Bytecodes::_getstatic || byte == Bytecodes::_putstatic || |
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769 byte == Bytecodes::_getfield || byte == Bytecodes::_putfield || |
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770 (byte == Bytecodes::_nop && !check_access), "bad field access bytecode"); |
0 | 771 |
772 bool is_static = (byte == Bytecodes::_getstatic || byte == Bytecodes::_putstatic); | |
773 bool is_put = (byte == Bytecodes::_putfield || byte == Bytecodes::_putstatic); | |
774 | |
775 // Check if there's a resolved klass containing the field | |
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776 if (resolved_klass.is_null()) { |
0 | 777 ResourceMark rm(THREAD); |
778 THROW_MSG(vmSymbols::java_lang_NoSuchFieldError(), field->as_C_string()); | |
779 } | |
780 | |
781 // Resolve instance field | |
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782 KlassHandle sel_klass(THREAD, InstanceKlass::cast(resolved_klass())->find_field(field, sig, &fd)); |
0 | 783 // check if field exists; i.e., if a klass containing the field def has been selected |
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784 if (sel_klass.is_null()) { |
0 | 785 ResourceMark rm(THREAD); |
786 THROW_MSG(vmSymbols::java_lang_NoSuchFieldError(), field->as_C_string()); | |
787 } | |
788 | |
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789 if (!check_access) |
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790 // Access checking may be turned off when calling from within the VM. |
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791 return; |
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792 |
0 | 793 // check access |
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794 check_field_accessability(current_klass, resolved_klass, sel_klass, fd, CHECK); |
0 | 795 |
796 // check for errors | |
797 if (is_static != fd.is_static()) { | |
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798 ResourceMark rm(THREAD); |
0 | 799 char msg[200]; |
6983 | 800 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 | 801 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), msg); |
802 } | |
803 | |
804 // Final fields can only be accessed from its own class. | |
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805 if (is_put && fd.access_flags().is_final() && sel_klass() != current_klass()) { |
0 | 806 THROW(vmSymbols::java_lang_IllegalAccessError()); |
807 } | |
808 | |
809 // initialize resolved_klass if necessary | |
810 // note 1: the klass which declared the field must be initialized (i.e, sel_klass) | |
811 // according to the newest JVM spec (5.5, p.170) - was bug (gri 7/28/99) | |
812 // | |
813 // note 2: we don't want to force initialization if we are just checking | |
814 // if the field access is legal; e.g., during compilation | |
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815 if (is_static && initialize_class) { |
0 | 816 sel_klass->initialize(CHECK); |
817 } | |
818 | |
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819 if (sel_klass() != current_klass()) { |
0 | 820 HandleMark hm(THREAD); |
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821 Handle ref_loader (THREAD, InstanceKlass::cast(current_klass())->class_loader()); |
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822 Handle sel_loader (THREAD, InstanceKlass::cast(sel_klass())->class_loader()); |
0 | 823 { |
824 ResourceMark rm(THREAD); | |
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825 Symbol* failed_type_symbol = |
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826 SystemDictionary::check_signature_loaders(sig, |
0 | 827 ref_loader, sel_loader, |
828 false, | |
829 CHECK); | |
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830 if (failed_type_symbol != NULL) { |
0 | 831 const char* msg = "loader constraint violation: when resolving field" |
832 " \"%s\" the class loader (instance of %s) of the referring class, " | |
833 "%s, and the class loader (instance of %s) for the field's resolved " | |
834 "type, %s, have different Class objects for that type"; | |
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835 char* field_name = field->as_C_string(); |
0 | 836 const char* loader1 = SystemDictionary::loader_name(ref_loader()); |
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837 char* sel = InstanceKlass::cast(sel_klass())->name()->as_C_string(); |
0 | 838 const char* loader2 = SystemDictionary::loader_name(sel_loader()); |
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839 char* failed_type_name = failed_type_symbol->as_C_string(); |
0 | 840 size_t buflen = strlen(msg) + strlen(field_name) + strlen(loader1) + |
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841 strlen(sel) + strlen(loader2) + strlen(failed_type_name) + 1; |
0 | 842 char* buf = NEW_RESOURCE_ARRAY_IN_THREAD(THREAD, char, buflen); |
843 jio_snprintf(buf, buflen, msg, field_name, loader1, sel, loader2, | |
844 failed_type_name); | |
845 THROW_MSG(vmSymbols::java_lang_LinkageError(), buf); | |
846 } | |
847 } | |
848 } | |
849 | |
850 // return information. note that the klass is set to the actual klass containing the | |
851 // field, otherwise access of static fields in superclasses will not work. | |
852 } | |
853 | |
854 | |
855 //------------------------------------------------------------------------------------------------------------------------ | |
856 // Invoke resolution | |
857 // | |
858 // Naming conventions: | |
859 // | |
860 // resolved_method the specified method (i.e., static receiver specified via constant pool index) | |
861 // sel_method the selected method (selected via run-time lookup; e.g., based on dynamic receiver class) | |
862 // resolved_klass the specified klass (i.e., specified via constant pool index) | |
863 // recv_klass the receiver klass | |
864 | |
865 | |
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866 void LinkResolver::resolve_static_call(CallInfo& result, KlassHandle& resolved_klass, Symbol* method_name, |
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867 Symbol* method_signature, KlassHandle current_klass, |
0 | 868 bool check_access, bool initialize_class, TRAPS) { |
869 methodHandle resolved_method; | |
870 linktime_resolve_static_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK); | |
6983 | 871 resolved_klass = KlassHandle(THREAD, resolved_method->method_holder()); |
0 | 872 |
873 // Initialize klass (this should only happen if everything is ok) | |
874 if (initialize_class && resolved_klass->should_be_initialized()) { | |
875 resolved_klass->initialize(CHECK); | |
876 linktime_resolve_static_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK); | |
877 } | |
878 | |
879 // setup result | |
880 result.set_static(resolved_klass, resolved_method, CHECK); | |
881 } | |
882 | |
883 // throws linktime exceptions | |
884 void LinkResolver::linktime_resolve_static_method(methodHandle& resolved_method, KlassHandle resolved_klass, | |
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885 Symbol* method_name, Symbol* method_signature, |
0 | 886 KlassHandle current_klass, bool check_access, TRAPS) { |
887 | |
13413 | 888 if (!resolved_klass->is_interface()) { |
889 resolve_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, false, CHECK); | |
890 } else { | |
891 resolve_interface_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, false, CHECK); | |
892 } | |
0 | 893 assert(resolved_method->name() != vmSymbols::class_initializer_name(), "should have been checked in verifier"); |
894 | |
895 // check if static | |
896 if (!resolved_method->is_static()) { | |
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897 ResourceMark rm(THREAD); |
0 | 898 char buf[200]; |
6983 | 899 jio_snprintf(buf, sizeof(buf), "Expected static method %s", Method::name_and_sig_as_C_string(resolved_klass(), |
0 | 900 resolved_method->name(), |
901 resolved_method->signature())); | |
902 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); | |
903 } | |
904 } | |
905 | |
906 | |
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907 void LinkResolver::resolve_special_call(CallInfo& result, KlassHandle resolved_klass, Symbol* method_name, |
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908 Symbol* method_signature, KlassHandle current_klass, bool check_access, TRAPS) { |
0 | 909 methodHandle resolved_method; |
910 linktime_resolve_special_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK); | |
911 runtime_resolve_special_method(result, resolved_method, resolved_klass, current_klass, check_access, CHECK); | |
912 } | |
913 | |
914 // throws linktime exceptions | |
915 void LinkResolver::linktime_resolve_special_method(methodHandle& resolved_method, KlassHandle resolved_klass, | |
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916 Symbol* method_name, Symbol* method_signature, |
0 | 917 KlassHandle current_klass, bool check_access, TRAPS) { |
918 | |
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919 // Invokespecial is called for multiple special reasons: |
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920 // <init> |
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921 // local private method invocation, for classes and interfaces |
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922 // superclass.method, which can also resolve to a default method |
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923 // and the selected method is recalculated relative to the direct superclass |
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924 // superinterface.method, which explicitly does not check shadowing |
6934 | 925 |
13413 | 926 if (!resolved_klass->is_interface()) { |
927 resolve_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, false, CHECK); | |
928 } else { | |
929 resolve_interface_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, true, CHECK); | |
930 } | |
0 | 931 |
932 // check if method name is <init>, that it is found in same klass as static type | |
933 if (resolved_method->name() == vmSymbols::object_initializer_name() && | |
934 resolved_method->method_holder() != resolved_klass()) { | |
935 ResourceMark rm(THREAD); | |
936 Exceptions::fthrow( | |
937 THREAD_AND_LOCATION, | |
2177
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938 vmSymbols::java_lang_NoSuchMethodError(), |
0 | 939 "%s: method %s%s not found", |
940 resolved_klass->external_name(), | |
941 resolved_method->name()->as_C_string(), | |
942 resolved_method->signature()->as_C_string() | |
943 ); | |
944 return; | |
945 } | |
946 | |
13401
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947 // check if invokespecial's interface method reference is in an indirect superinterface |
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948 if (!current_klass.is_null() && resolved_klass->is_interface()) { |
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949 Klass *klass_to_check = !InstanceKlass::cast(current_klass())->is_anonymous() ? |
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950 current_klass() : |
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951 InstanceKlass::cast(current_klass())->host_klass(); |
13433
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952 // As of the fix for 4486457 we disable verification for all of the |
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953 // dynamically-generated bytecodes associated with the 1.4 |
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954 // reflection implementation, not just those associated with |
769557390c43
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955 // sun/reflect/SerializationConstructorAccessor. |
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956 bool is_reflect = JDK_Version::is_gte_jdk14x_version() && |
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957 UseNewReflection && |
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958 klass_to_check->is_subclass_of( |
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959 SystemDictionary::reflect_MagicAccessorImpl_klass()); |
13401
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960 |
13433
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961 if (!is_reflect && |
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962 !InstanceKlass::cast(klass_to_check)->is_same_or_direct_interface(resolved_klass())) { |
13401
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963 ResourceMark rm(THREAD); |
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964 char buf[200]; |
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965 jio_snprintf(buf, sizeof(buf), |
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966 "Interface method reference: %s, is in an indirect superinterface of %s", |
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967 Method::name_and_sig_as_C_string(resolved_klass(), |
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968 resolved_method->name(), |
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969 resolved_method->signature()), |
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970 current_klass->external_name()); |
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971 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); |
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972 } |
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973 } |
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974 |
0 | 975 // check if not static |
976 if (resolved_method->is_static()) { | |
3324
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977 ResourceMark rm(THREAD); |
0 | 978 char buf[200]; |
979 jio_snprintf(buf, sizeof(buf), | |
980 "Expecting non-static method %s", | |
6983 | 981 Method::name_and_sig_as_C_string(resolved_klass(), |
0 | 982 resolved_method->name(), |
983 resolved_method->signature())); | |
984 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); | |
985 } | |
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986 |
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987 if (TraceItables && Verbose) { |
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988 ResourceMark rm(THREAD); |
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989 tty->print("invokespecial resolved method: caller-class:%s, compile-time-class:%s, method:%s, method_holder:%s, access_flags: ", |
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990 (current_klass.is_null() ? "<NULL>" : current_klass->internal_name()), |
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991 (resolved_klass.is_null() ? "<NULL>" : resolved_klass->internal_name()), |
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992 Method::name_and_sig_as_C_string(resolved_klass(), |
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993 resolved_method->name(), |
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994 resolved_method->signature()), |
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995 resolved_method->method_holder()->internal_name() |
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996 ); |
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997 resolved_method->access_flags().print_on(tty); |
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998 if (resolved_method->is_default_method()) { |
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999 tty->print("default "); |
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1000 } |
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1001 if (resolved_method->is_overpass()) { |
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1002 tty->print("overpass"); |
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1003 } |
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1004 tty->cr(); |
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1005 } |
0 | 1006 } |
1007 | |
1008 // throws runtime exceptions | |
1009 void LinkResolver::runtime_resolve_special_method(CallInfo& result, methodHandle resolved_method, KlassHandle resolved_klass, | |
1010 KlassHandle current_klass, bool check_access, TRAPS) { | |
1011 | |
1012 // resolved method is selected method unless we have an old-style lookup | |
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1013 // for a superclass method |
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1014 // Invokespecial for a superinterface, resolved method is selected method, |
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1015 // no checks for shadowing |
0 | 1016 methodHandle sel_method(THREAD, resolved_method()); |
1017 | |
1018 // check if this is an old-style super call and do a new lookup if so | |
1019 { KlassHandle method_klass = KlassHandle(THREAD, | |
1020 resolved_method->method_holder()); | |
1021 | |
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1022 if (check_access && |
0 | 1023 // a) check if ACC_SUPER flag is set for the current class |
8702 | 1024 (current_klass->is_super() || !AllowNonVirtualCalls) && |
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1025 // b) check if the class of the resolved_klass is a superclass |
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1026 // (not supertype in order to exclude interface classes) of the current class. |
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1027 // This check is not performed for super.invoke for interface methods |
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1028 // in super interfaces. |
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1029 current_klass->is_subclass_of(resolved_klass()) && |
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1030 current_klass() != resolved_klass() && |
0 | 1031 // c) check if the method is not <init> |
1032 resolved_method->name() != vmSymbols::object_initializer_name()) { | |
1033 // Lookup super method | |
1034 KlassHandle super_klass(THREAD, current_klass->super()); | |
1035 lookup_instance_method_in_klasses(sel_method, super_klass, | |
2177
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1036 resolved_method->name(), |
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1037 resolved_method->signature(), CHECK); |
0 | 1038 // check if found |
1039 if (sel_method.is_null()) { | |
1040 ResourceMark rm(THREAD); | |
1041 THROW_MSG(vmSymbols::java_lang_AbstractMethodError(), | |
6983 | 1042 Method::name_and_sig_as_C_string(resolved_klass(), |
0 | 1043 resolved_method->name(), |
1044 resolved_method->signature())); | |
1045 } | |
1046 } | |
1047 } | |
1048 | |
1049 // check if not static | |
1050 if (sel_method->is_static()) { | |
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1051 ResourceMark rm(THREAD); |
0 | 1052 char buf[200]; |
6983 | 1053 jio_snprintf(buf, sizeof(buf), "Expecting non-static method %s", Method::name_and_sig_as_C_string(resolved_klass(), |
0 | 1054 resolved_method->name(), |
1055 resolved_method->signature())); | |
1056 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); | |
1057 } | |
1058 | |
1059 // check if abstract | |
1060 if (sel_method->is_abstract()) { | |
1061 ResourceMark rm(THREAD); | |
1062 THROW_MSG(vmSymbols::java_lang_AbstractMethodError(), | |
6983 | 1063 Method::name_and_sig_as_C_string(resolved_klass(), |
0 | 1064 sel_method->name(), |
1065 sel_method->signature())); | |
1066 } | |
1067 | |
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1068 if (TraceItables && Verbose) { |
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1069 ResourceMark rm(THREAD); |
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1070 tty->print("invokespecial selected method: resolved-class:%s, method:%s, method_holder:%s, access_flags: ", |
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1071 (resolved_klass.is_null() ? "<NULL>" : resolved_klass->internal_name()), |
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1072 Method::name_and_sig_as_C_string(resolved_klass(), |
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1073 sel_method->name(), |
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1074 sel_method->signature()), |
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1075 sel_method->method_holder()->internal_name() |
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1076 ); |
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1077 sel_method->access_flags().print_on(tty); |
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1078 if (sel_method->is_default_method()) { |
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1079 tty->print("default "); |
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1080 } |
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1081 if (sel_method->is_overpass()) { |
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1082 tty->print("overpass"); |
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1083 } |
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1084 tty->cr(); |
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1085 } |
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1086 |
0 | 1087 // setup result |
1088 result.set_static(resolved_klass, sel_method, CHECK); | |
1089 } | |
1090 | |
1091 void LinkResolver::resolve_virtual_call(CallInfo& result, Handle recv, KlassHandle receiver_klass, KlassHandle resolved_klass, | |
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1092 Symbol* method_name, Symbol* method_signature, KlassHandle current_klass, |
0 | 1093 bool check_access, bool check_null_and_abstract, TRAPS) { |
1094 methodHandle resolved_method; | |
1095 linktime_resolve_virtual_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK); | |
1096 runtime_resolve_virtual_method(result, resolved_method, resolved_klass, recv, receiver_klass, check_null_and_abstract, CHECK); | |
1097 } | |
1098 | |
1099 // throws linktime exceptions | |
1100 void LinkResolver::linktime_resolve_virtual_method(methodHandle &resolved_method, KlassHandle resolved_klass, | |
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1101 Symbol* method_name, Symbol* method_signature, |
0 | 1102 KlassHandle current_klass, bool check_access, TRAPS) { |
1103 // normal method resolution | |
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1104 resolve_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, true, CHECK); |
0 | 1105 |
1106 assert(resolved_method->name() != vmSymbols::object_initializer_name(), "should have been checked in verifier"); | |
1107 assert(resolved_method->name() != vmSymbols::class_initializer_name (), "should have been checked in verifier"); | |
1108 | |
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1109 // check if private interface method |
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1110 if (resolved_klass->is_interface() && resolved_method->is_private()) { |
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1111 ResourceMark rm(THREAD); |
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1112 char buf[200]; |
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1113 jio_snprintf(buf, sizeof(buf), "private interface method requires invokespecial, not invokevirtual: method %s, caller-class:%s", |
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1114 Method::name_and_sig_as_C_string(resolved_klass(), |
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1115 resolved_method->name(), |
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1116 resolved_method->signature()), |
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1117 (current_klass.is_null() ? "<NULL>" : current_klass->internal_name())); |
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1118 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); |
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1119 } |
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1120 |
0 | 1121 // check if not static |
1122 if (resolved_method->is_static()) { | |
3324
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1123 ResourceMark rm(THREAD); |
0 | 1124 char buf[200]; |
6983 | 1125 jio_snprintf(buf, sizeof(buf), "Expecting non-static method %s", Method::name_and_sig_as_C_string(resolved_klass(), |
0 | 1126 resolved_method->name(), |
1127 resolved_method->signature())); | |
1128 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); | |
1129 } | |
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1130 |
12823
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1131 if (PrintVtables && Verbose) { |
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1132 ResourceMark rm(THREAD); |
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1133 tty->print("invokevirtual resolved method: caller-class:%s, compile-time-class:%s, method:%s, method_holder:%s, access_flags: ", |
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1134 (current_klass.is_null() ? "<NULL>" : current_klass->internal_name()), |
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1135 (resolved_klass.is_null() ? "<NULL>" : resolved_klass->internal_name()), |
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1136 Method::name_and_sig_as_C_string(resolved_klass(), |
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1137 resolved_method->name(), |
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1138 resolved_method->signature()), |
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1139 resolved_method->method_holder()->internal_name() |
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|
1140 ); |
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1141 resolved_method->access_flags().print_on(tty); |
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1142 if (resolved_method->is_default_method()) { |
13055
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|
1143 tty->print("default "); |
12823
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1144 } |
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1145 if (resolved_method->is_overpass()) { |
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1146 tty->print("overpass"); |
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|
1147 } |
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|
1148 tty->cr(); |
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|
1149 } |
0 | 1150 } |
1151 | |
1152 // throws runtime exceptions | |
1153 void LinkResolver::runtime_resolve_virtual_method(CallInfo& result, | |
1154 methodHandle resolved_method, | |
1155 KlassHandle resolved_klass, | |
1156 Handle recv, | |
1157 KlassHandle recv_klass, | |
1158 bool check_null_and_abstract, | |
1159 TRAPS) { | |
1160 | |
1161 // setup default return values | |
6725
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1162 int vtable_index = Method::invalid_vtable_index; |
0 | 1163 methodHandle selected_method; |
1164 | |
1165 assert(recv.is_null() || recv->is_oop(), "receiver is not an oop"); | |
1166 | |
1167 // runtime method resolution | |
1168 if (check_null_and_abstract && recv.is_null()) { // check if receiver exists | |
1169 THROW(vmSymbols::java_lang_NullPointerException()); | |
1170 } | |
1171 | |
6725
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1172 // Virtual methods cannot be resolved before its klass has been linked, for otherwise the Method*'s |
0 | 1173 // has not been rewritten, and the vtable initialized. Make sure to do this after the nullcheck, since |
1174 // a missing receiver might result in a bogus lookup. | |
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18fb7da42534
8000725: NPG: method_holder() and pool_holder() and pool_holder field should be InstanceKlass
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1175 assert(resolved_method->method_holder()->is_linked(), "must be linked"); |
0 | 1176 |
1177 // do lookup based on receiver klass using the vtable index | |
6725
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1178 if (resolved_method->method_holder()->is_interface()) { // miranda method |
12823
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1179 vtable_index = vtable_index_of_interface_method(resolved_klass, |
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1180 resolved_method); |
0 | 1181 assert(vtable_index >= 0 , "we should have valid vtable index at this point"); |
1182 | |
6725
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|
1183 InstanceKlass* inst = InstanceKlass::cast(recv_klass()); |
0 | 1184 selected_method = methodHandle(THREAD, inst->method_at_vtable(vtable_index)); |
1185 } else { | |
1186 // at this point we are sure that resolved_method is virtual and not | |
1187 // a miranda method; therefore, it must have a valid vtable index. | |
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1188 assert(!resolved_method->has_itable_index(), ""); |
0 | 1189 vtable_index = resolved_method->vtable_index(); |
1190 // We could get a negative vtable_index for final methods, | |
1191 // because as an optimization they are they are never put in the vtable, | |
1192 // unless they override an existing method. | |
1193 // If we do get a negative, it means the resolved method is the the selected | |
1194 // method, and it can never be changed by an override. | |
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|
1195 if (vtable_index == Method::nonvirtual_vtable_index) { |
0 | 1196 assert(resolved_method->can_be_statically_bound(), "cannot override this method"); |
1197 selected_method = resolved_method; | |
1198 } else { | |
1199 // recv_klass might be an arrayKlassOop but all vtables start at | |
1200 // the same place. The cast is to avoid virtual call and assertion. | |
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|
1201 InstanceKlass* inst = (InstanceKlass*)recv_klass(); |
0 | 1202 selected_method = methodHandle(THREAD, inst->method_at_vtable(vtable_index)); |
1203 } | |
1204 } | |
1205 | |
1206 // check if method exists | |
1207 if (selected_method.is_null()) { | |
1208 ResourceMark rm(THREAD); | |
1209 THROW_MSG(vmSymbols::java_lang_AbstractMethodError(), | |
6983 | 1210 Method::name_and_sig_as_C_string(resolved_klass(), |
0 | 1211 resolved_method->name(), |
1212 resolved_method->signature())); | |
1213 } | |
1214 | |
1215 // check if abstract | |
1216 if (check_null_and_abstract && selected_method->is_abstract()) { | |
1217 ResourceMark rm(THREAD); | |
1218 THROW_MSG(vmSymbols::java_lang_AbstractMethodError(), | |
6983 | 1219 Method::name_and_sig_as_C_string(resolved_klass(), |
0 | 1220 selected_method->name(), |
1221 selected_method->signature())); | |
1222 } | |
1223 | |
12318
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1224 if (PrintVtables && Verbose) { |
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8011311: Private interface methods. Default conflicts:ICCE. no erased_super_default.
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|
1225 ResourceMark rm(THREAD); |
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1226 tty->print("invokevirtual selected method: receiver-class:%s, resolved-class:%s, method:%s, method_holder:%s, vtable_index:%d, access_flags: ", |
36b97be47bde
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|
1227 (recv_klass.is_null() ? "<NULL>" : recv_klass->internal_name()), |
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8011311: Private interface methods. Default conflicts:ICCE. no erased_super_default.
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|
1228 (resolved_klass.is_null() ? "<NULL>" : resolved_klass->internal_name()), |
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8011311: Private interface methods. Default conflicts:ICCE. no erased_super_default.
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|
1229 Method::name_and_sig_as_C_string(resolved_klass(), |
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|
1230 resolved_method->name(), |
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|
1231 resolved_method->signature()), |
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|
1232 selected_method->method_holder()->internal_name(), |
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|
1233 vtable_index |
36b97be47bde
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|
1234 ); |
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8011311: Private interface methods. Default conflicts:ICCE. no erased_super_default.
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|
1235 selected_method->access_flags().print_on(tty); |
12823
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|
1236 if (selected_method->is_default_method()) { |
13055
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8027229: ICCE expected for >=2 maximally specific default methods.
acorn
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diff
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|
1237 tty->print("default "); |
12318
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8011311: Private interface methods. Default conflicts:ICCE. no erased_super_default.
acorn
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|
1238 } |
12823
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|
1239 if (selected_method->is_overpass()) { |
12318
36b97be47bde
8011311: Private interface methods. Default conflicts:ICCE. no erased_super_default.
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|
1240 tty->print("overpass"); |
36b97be47bde
8011311: Private interface methods. Default conflicts:ICCE. no erased_super_default.
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|
1241 } |
36b97be47bde
8011311: Private interface methods. Default conflicts:ICCE. no erased_super_default.
acorn
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diff
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|
1242 tty->cr(); |
36b97be47bde
8011311: Private interface methods. Default conflicts:ICCE. no erased_super_default.
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|
1243 } |
0 | 1244 // setup result |
1245 result.set_virtual(resolved_klass, recv_klass, resolved_method, selected_method, vtable_index, CHECK); | |
1246 } | |
1247 | |
1248 void LinkResolver::resolve_interface_call(CallInfo& result, Handle recv, KlassHandle recv_klass, KlassHandle resolved_klass, | |
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1972
diff
changeset
|
1249 Symbol* method_name, Symbol* method_signature, KlassHandle current_klass, |
0 | 1250 bool check_access, bool check_null_and_abstract, TRAPS) { |
1251 methodHandle resolved_method; | |
1252 linktime_resolve_interface_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK); | |
1253 runtime_resolve_interface_method(result, resolved_method, resolved_klass, recv, recv_klass, check_null_and_abstract, CHECK); | |
1254 } | |
1255 | |
1256 // throws linktime exceptions | |
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
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diff
changeset
|
1257 void LinkResolver::linktime_resolve_interface_method(methodHandle& resolved_method, KlassHandle resolved_klass, Symbol* method_name, |
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
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diff
changeset
|
1258 Symbol* method_signature, KlassHandle current_klass, bool check_access, TRAPS) { |
0 | 1259 // normal interface method resolution |
13413 | 1260 resolve_interface_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, true, CHECK); |
0 | 1261 |
1262 assert(resolved_method->name() != vmSymbols::object_initializer_name(), "should have been checked in verifier"); | |
1263 assert(resolved_method->name() != vmSymbols::class_initializer_name (), "should have been checked in verifier"); | |
1264 } | |
1265 | |
1266 // throws runtime exceptions | |
1267 void LinkResolver::runtime_resolve_interface_method(CallInfo& result, methodHandle resolved_method, KlassHandle resolved_klass, | |
1268 Handle recv, KlassHandle recv_klass, bool check_null_and_abstract, TRAPS) { | |
1269 // check if receiver exists | |
1270 if (check_null_and_abstract && recv.is_null()) { | |
1271 THROW(vmSymbols::java_lang_NullPointerException()); | |
1272 } | |
1273 | |
12318
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diff
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|
1274 // check if private interface method |
36b97be47bde
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|
1275 if (resolved_klass->is_interface() && resolved_method->is_private()) { |
36b97be47bde
8011311: Private interface methods. Default conflicts:ICCE. no erased_super_default.
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|
1276 ResourceMark rm(THREAD); |
36b97be47bde
8011311: Private interface methods. Default conflicts:ICCE. no erased_super_default.
acorn
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diff
changeset
|
1277 char buf[200]; |
36b97be47bde
8011311: Private interface methods. Default conflicts:ICCE. no erased_super_default.
acorn
parents:
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diff
changeset
|
1278 jio_snprintf(buf, sizeof(buf), "private interface method requires invokespecial, not invokeinterface: method %s", |
36b97be47bde
8011311: Private interface methods. Default conflicts:ICCE. no erased_super_default.
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diff
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|
1279 Method::name_and_sig_as_C_string(resolved_klass(), |
36b97be47bde
8011311: Private interface methods. Default conflicts:ICCE. no erased_super_default.
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|
1280 resolved_method->name(), |
36b97be47bde
8011311: Private interface methods. Default conflicts:ICCE. no erased_super_default.
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diff
changeset
|
1281 resolved_method->signature())); |
36b97be47bde
8011311: Private interface methods. Default conflicts:ICCE. no erased_super_default.
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diff
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|
1282 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); |
36b97be47bde
8011311: Private interface methods. Default conflicts:ICCE. no erased_super_default.
acorn
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|
1283 } |
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|
1284 |
0 | 1285 // check if receiver klass implements the resolved interface |
1286 if (!recv_klass->is_subtype_of(resolved_klass())) { | |
3324
acf5e660c71a
6728025: LinkResolver is missing some ResourceMarks
jcoomes
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diff
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|
1287 ResourceMark rm(THREAD); |
0 | 1288 char buf[200]; |
1289 jio_snprintf(buf, sizeof(buf), "Class %s does not implement the requested interface %s", | |
6983 | 1290 recv_klass()->external_name(), |
1291 resolved_klass()->external_name()); | |
0 | 1292 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); |
1293 } | |
1294 // do lookup based on receiver klass | |
1295 methodHandle sel_method; | |
1296 lookup_instance_method_in_klasses(sel_method, recv_klass, | |
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1972
diff
changeset
|
1297 resolved_method->name(), |
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
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diff
changeset
|
1298 resolved_method->signature(), CHECK); |
12264
b2e698d2276c
8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation
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parents:
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diff
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|
1299 if (sel_method.is_null() && !check_null_and_abstract) { |
b2e698d2276c
8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation
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|
1300 // In theory this is a harmless placeholder value, but |
b2e698d2276c
8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation
drchase
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diff
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|
1301 // in practice leaving in null affects the nsk default method tests. |
b2e698d2276c
8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation
drchase
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diff
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|
1302 // This needs further study. |
b2e698d2276c
8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation
drchase
parents:
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diff
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|
1303 sel_method = resolved_method; |
b2e698d2276c
8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation
drchase
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diff
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|
1304 } |
0 | 1305 // check if method exists |
1306 if (sel_method.is_null()) { | |
1307 ResourceMark rm(THREAD); | |
1308 THROW_MSG(vmSymbols::java_lang_AbstractMethodError(), | |
6983 | 1309 Method::name_and_sig_as_C_string(recv_klass(), |
0 | 1310 resolved_method->name(), |
1311 resolved_method->signature())); | |
1312 } | |
10128
41ed397cc0cd
8006267: InterfaceMethod_ref should allow invokestatic and invokespecial
bharadwaj
parents:
9082
diff
changeset
|
1313 // check access |
12318
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|
1314 // Throw Illegal Access Error if sel_method is not public. |
36b97be47bde
8011311: Private interface methods. Default conflicts:ICCE. no erased_super_default.
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|
1315 if (!sel_method->is_public()) { |
36b97be47bde
8011311: Private interface methods. Default conflicts:ICCE. no erased_super_default.
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|
1316 ResourceMark rm(THREAD); |
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8011311: Private interface methods. Default conflicts:ICCE. no erased_super_default.
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|
1317 THROW_MSG(vmSymbols::java_lang_IllegalAccessError(), |
36b97be47bde
8011311: Private interface methods. Default conflicts:ICCE. no erased_super_default.
acorn
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|
1318 Method::name_and_sig_as_C_string(recv_klass(), |
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8011311: Private interface methods. Default conflicts:ICCE. no erased_super_default.
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|
1319 sel_method->name(), |
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8011311: Private interface methods. Default conflicts:ICCE. no erased_super_default.
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|
1320 sel_method->signature())); |
10128
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8006267: InterfaceMethod_ref should allow invokestatic and invokespecial
bharadwaj
parents:
9082
diff
changeset
|
1321 } |
0 | 1322 // check if abstract |
1323 if (check_null_and_abstract && sel_method->is_abstract()) { | |
1324 ResourceMark rm(THREAD); | |
1325 THROW_MSG(vmSymbols::java_lang_AbstractMethodError(), | |
6983 | 1326 Method::name_and_sig_as_C_string(recv_klass(), |
0 | 1327 sel_method->name(), |
1328 sel_method->signature())); | |
1329 } | |
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1330 |
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1331 if (TraceItables && Verbose) { |
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1332 ResourceMark rm(THREAD); |
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1333 tty->print("invokeinterface selected method: receiver-class:%s, resolved-class:%s, method:%s, method_holder:%s, access_flags: ", |
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1334 (recv_klass.is_null() ? "<NULL>" : recv_klass->internal_name()), |
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1335 (resolved_klass.is_null() ? "<NULL>" : resolved_klass->internal_name()), |
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1336 Method::name_and_sig_as_C_string(resolved_klass(), |
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1337 resolved_method->name(), |
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1338 resolved_method->signature()), |
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1339 sel_method->method_holder()->internal_name() |
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1340 ); |
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1341 sel_method->access_flags().print_on(tty); |
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1342 if (sel_method->is_default_method()) { |
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1343 tty->print("default "); |
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1344 } |
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1345 if (sel_method->is_overpass()) { |
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1346 tty->print("overpass"); |
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1347 } |
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|
1348 tty->cr(); |
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|
1349 } |
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1350 // setup result |
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1351 if (!resolved_method->has_itable_index()) { |
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1352 int vtable_index = resolved_method->vtable_index(); |
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1353 assert(vtable_index == sel_method->vtable_index(), "sanity check"); |
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1354 result.set_virtual(resolved_klass, recv_klass, resolved_method, sel_method, vtable_index, CHECK); |
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1355 } else { |
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1356 int itable_index = resolved_method()->itable_index(); |
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1357 result.set_interface(resolved_klass, recv_klass, resolved_method, sel_method, itable_index, CHECK); |
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1358 } |
0 | 1359 } |
1360 | |
1361 | |
1362 methodHandle LinkResolver::linktime_resolve_interface_method_or_null( | |
1363 KlassHandle resolved_klass, | |
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1364 Symbol* method_name, |
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1365 Symbol* method_signature, |
0 | 1366 KlassHandle current_klass, |
1367 bool check_access) { | |
1368 EXCEPTION_MARK; | |
1369 methodHandle method_result; | |
1370 linktime_resolve_interface_method(method_result, resolved_klass, method_name, method_signature, current_klass, check_access, THREAD); | |
1371 if (HAS_PENDING_EXCEPTION) { | |
1372 CLEAR_PENDING_EXCEPTION; | |
1373 return methodHandle(); | |
1374 } else { | |
1375 return method_result; | |
1376 } | |
1377 } | |
1378 | |
1379 methodHandle LinkResolver::linktime_resolve_virtual_method_or_null( | |
1380 KlassHandle resolved_klass, | |
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1381 Symbol* method_name, |
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1382 Symbol* method_signature, |
0 | 1383 KlassHandle current_klass, |
1384 bool check_access) { | |
1385 EXCEPTION_MARK; | |
1386 methodHandle method_result; | |
1387 linktime_resolve_virtual_method(method_result, resolved_klass, method_name, method_signature, current_klass, check_access, THREAD); | |
1388 if (HAS_PENDING_EXCEPTION) { | |
1389 CLEAR_PENDING_EXCEPTION; | |
1390 return methodHandle(); | |
1391 } else { | |
1392 return method_result; | |
1393 } | |
1394 } | |
1395 | |
1396 methodHandle LinkResolver::resolve_virtual_call_or_null( | |
1397 KlassHandle receiver_klass, | |
1398 KlassHandle resolved_klass, | |
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1399 Symbol* name, |
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1400 Symbol* signature, |
0 | 1401 KlassHandle current_klass) { |
1402 EXCEPTION_MARK; | |
1403 CallInfo info; | |
1404 resolve_virtual_call(info, Handle(), receiver_klass, resolved_klass, name, signature, current_klass, true, false, THREAD); | |
1405 if (HAS_PENDING_EXCEPTION) { | |
1406 CLEAR_PENDING_EXCEPTION; | |
1407 return methodHandle(); | |
1408 } | |
1409 return info.selected_method(); | |
1410 } | |
1411 | |
1412 methodHandle LinkResolver::resolve_interface_call_or_null( | |
1413 KlassHandle receiver_klass, | |
1414 KlassHandle resolved_klass, | |
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1415 Symbol* name, |
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1416 Symbol* signature, |
0 | 1417 KlassHandle current_klass) { |
1418 EXCEPTION_MARK; | |
1419 CallInfo info; | |
1420 resolve_interface_call(info, Handle(), receiver_klass, resolved_klass, name, signature, current_klass, true, false, THREAD); | |
1421 if (HAS_PENDING_EXCEPTION) { | |
1422 CLEAR_PENDING_EXCEPTION; | |
1423 return methodHandle(); | |
1424 } | |
1425 return info.selected_method(); | |
1426 } | |
1427 | |
1428 int LinkResolver::resolve_virtual_vtable_index( | |
1429 KlassHandle receiver_klass, | |
1430 KlassHandle resolved_klass, | |
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1431 Symbol* name, |
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1432 Symbol* signature, |
0 | 1433 KlassHandle current_klass) { |
1434 EXCEPTION_MARK; | |
1435 CallInfo info; | |
1436 resolve_virtual_call(info, Handle(), receiver_klass, resolved_klass, name, signature, current_klass, true, false, THREAD); | |
1437 if (HAS_PENDING_EXCEPTION) { | |
1438 CLEAR_PENDING_EXCEPTION; | |
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1439 return Method::invalid_vtable_index; |
0 | 1440 } |
1441 return info.vtable_index(); | |
1442 } | |
1443 | |
1444 methodHandle LinkResolver::resolve_static_call_or_null( | |
1445 KlassHandle resolved_klass, | |
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1446 Symbol* name, |
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1447 Symbol* signature, |
0 | 1448 KlassHandle current_klass) { |
1449 EXCEPTION_MARK; | |
1450 CallInfo info; | |
1451 resolve_static_call(info, resolved_klass, name, signature, current_klass, true, false, THREAD); | |
1452 if (HAS_PENDING_EXCEPTION) { | |
1453 CLEAR_PENDING_EXCEPTION; | |
1454 return methodHandle(); | |
1455 } | |
1456 return info.selected_method(); | |
1457 } | |
1458 | |
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1459 methodHandle LinkResolver::resolve_special_call_or_null(KlassHandle resolved_klass, Symbol* name, Symbol* signature, |
0 | 1460 KlassHandle current_klass) { |
1461 EXCEPTION_MARK; | |
1462 CallInfo info; | |
1463 resolve_special_call(info, resolved_klass, name, signature, current_klass, true, THREAD); | |
1464 if (HAS_PENDING_EXCEPTION) { | |
1465 CLEAR_PENDING_EXCEPTION; | |
1466 return methodHandle(); | |
1467 } | |
1468 return info.selected_method(); | |
1469 } | |
1470 | |
1471 | |
1472 | |
1473 //------------------------------------------------------------------------------------------------------------------------ | |
1474 // ConstantPool entries | |
1475 | |
1476 void LinkResolver::resolve_invoke(CallInfo& result, Handle recv, constantPoolHandle pool, int index, Bytecodes::Code byte, TRAPS) { | |
1477 switch (byte) { | |
1478 case Bytecodes::_invokestatic : resolve_invokestatic (result, pool, index, CHECK); break; | |
1479 case Bytecodes::_invokespecial : resolve_invokespecial (result, pool, index, CHECK); break; | |
1480 case Bytecodes::_invokevirtual : resolve_invokevirtual (result, recv, pool, index, CHECK); break; | |
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1481 case Bytecodes::_invokehandle : resolve_invokehandle (result, pool, index, CHECK); break; |
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1482 case Bytecodes::_invokedynamic : resolve_invokedynamic (result, pool, index, CHECK); break; |
0 | 1483 case Bytecodes::_invokeinterface: resolve_invokeinterface(result, recv, pool, index, CHECK); break; |
1484 } | |
1485 return; | |
1486 } | |
1487 | |
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1488 void LinkResolver::resolve_pool(KlassHandle& resolved_klass, Symbol*& method_name, Symbol*& method_signature, |
0 | 1489 KlassHandle& current_klass, constantPoolHandle pool, int index, TRAPS) { |
1490 // resolve klass | |
1491 resolve_klass(resolved_klass, pool, index, CHECK); | |
1492 | |
1493 // Get name, signature, and static klass | |
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1494 method_name = pool->name_ref_at(index); |
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1495 method_signature = pool->signature_ref_at(index); |
0 | 1496 current_klass = KlassHandle(THREAD, pool->pool_holder()); |
1497 } | |
1498 | |
1499 | |
1500 void LinkResolver::resolve_invokestatic(CallInfo& result, constantPoolHandle pool, int index, TRAPS) { | |
1501 KlassHandle resolved_klass; | |
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1502 Symbol* method_name = NULL; |
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1503 Symbol* method_signature = NULL; |
0 | 1504 KlassHandle current_klass; |
1505 resolve_pool(resolved_klass, method_name, method_signature, current_klass, pool, index, CHECK); | |
1506 resolve_static_call(result, resolved_klass, method_name, method_signature, current_klass, true, true, CHECK); | |
1507 } | |
1508 | |
1509 | |
1510 void LinkResolver::resolve_invokespecial(CallInfo& result, constantPoolHandle pool, int index, TRAPS) { | |
1511 KlassHandle resolved_klass; | |
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1512 Symbol* method_name = NULL; |
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1513 Symbol* method_signature = NULL; |
0 | 1514 KlassHandle current_klass; |
1515 resolve_pool(resolved_klass, method_name, method_signature, current_klass, pool, index, CHECK); | |
1516 resolve_special_call(result, resolved_klass, method_name, method_signature, current_klass, true, CHECK); | |
1517 } | |
1518 | |
1519 | |
1520 void LinkResolver::resolve_invokevirtual(CallInfo& result, Handle recv, | |
1521 constantPoolHandle pool, int index, | |
1522 TRAPS) { | |
1523 | |
1524 KlassHandle resolved_klass; | |
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1525 Symbol* method_name = NULL; |
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1526 Symbol* method_signature = NULL; |
0 | 1527 KlassHandle current_klass; |
1528 resolve_pool(resolved_klass, method_name, method_signature, current_klass, pool, index, CHECK); | |
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1529 KlassHandle recvrKlass (THREAD, recv.is_null() ? (Klass*)NULL : recv->klass()); |
0 | 1530 resolve_virtual_call(result, recv, recvrKlass, resolved_klass, method_name, method_signature, current_klass, true, true, CHECK); |
1531 } | |
1532 | |
1533 | |
1534 void LinkResolver::resolve_invokeinterface(CallInfo& result, Handle recv, constantPoolHandle pool, int index, TRAPS) { | |
1535 KlassHandle resolved_klass; | |
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1536 Symbol* method_name = NULL; |
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1537 Symbol* method_signature = NULL; |
0 | 1538 KlassHandle current_klass; |
1539 resolve_pool(resolved_klass, method_name, method_signature, current_klass, pool, index, CHECK); | |
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1540 KlassHandle recvrKlass (THREAD, recv.is_null() ? (Klass*)NULL : recv->klass()); |
0 | 1541 resolve_interface_call(result, recv, recvrKlass, resolved_klass, method_name, method_signature, current_klass, true, true, CHECK); |
1542 } | |
1543 | |
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1544 |
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1545 void LinkResolver::resolve_invokehandle(CallInfo& result, constantPoolHandle pool, int index, TRAPS) { |
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1546 assert(EnableInvokeDynamic, ""); |
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1547 // This guy is reached from InterpreterRuntime::resolve_invokehandle. |
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1548 KlassHandle resolved_klass; |
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1549 Symbol* method_name = NULL; |
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1550 Symbol* method_signature = NULL; |
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1551 KlassHandle current_klass; |
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1552 resolve_pool(resolved_klass, method_name, method_signature, current_klass, pool, index, CHECK); |
9082 | 1553 if (TraceMethodHandles) { |
1554 ResourceMark rm(THREAD); | |
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1555 tty->print_cr("resolve_invokehandle %s %s", method_name->as_C_string(), method_signature->as_C_string()); |
9082 | 1556 } |
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1557 resolve_handle_call(result, resolved_klass, method_name, method_signature, current_klass, CHECK); |
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1558 } |
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1559 |
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1560 void LinkResolver::resolve_handle_call(CallInfo& result, KlassHandle resolved_klass, |
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1561 Symbol* method_name, Symbol* method_signature, |
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1562 KlassHandle current_klass, |
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1563 TRAPS) { |
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1564 // JSR 292: this must be an implicitly generated method MethodHandle.invokeExact(*...) or similar |
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1565 assert(resolved_klass() == SystemDictionary::MethodHandle_klass(), ""); |
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1566 assert(MethodHandles::is_signature_polymorphic_name(method_name), ""); |
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1567 methodHandle resolved_method; |
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1568 Handle resolved_appendix; |
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1569 Handle resolved_method_type; |
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1570 lookup_polymorphic_method(resolved_method, resolved_klass, |
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1571 method_name, method_signature, |
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1572 current_klass, &resolved_appendix, &resolved_method_type, CHECK); |
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1573 result.set_handle(resolved_method, resolved_appendix, resolved_method_type, CHECK); |
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1574 } |
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1575 |
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1576 |
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1577 void LinkResolver::resolve_invokedynamic(CallInfo& result, constantPoolHandle pool, int index, TRAPS) { |
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1578 assert(EnableInvokeDynamic, ""); |
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1579 |
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1580 //resolve_pool(<resolved_klass>, method_name, method_signature, current_klass, pool, index, CHECK); |
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1581 Symbol* method_name = pool->name_ref_at(index); |
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1582 Symbol* method_signature = pool->signature_ref_at(index); |
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1583 KlassHandle current_klass = KlassHandle(THREAD, pool->pool_holder()); |
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1584 |
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1585 // Resolve the bootstrap specifier (BSM + optional arguments). |
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1586 Handle bootstrap_specifier; |
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1587 // Check if CallSite has been bound already: |
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1588 ConstantPoolCacheEntry* cpce = pool->invokedynamic_cp_cache_entry_at(index); |
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1589 if (cpce->is_f1_null()) { |
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1590 int pool_index = cpce->constant_pool_index(); |
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1591 oop bsm_info = pool->resolve_bootstrap_specifier_at(pool_index, CHECK); |
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1592 assert(bsm_info != NULL, ""); |
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1593 // FIXME: Cache this once per BootstrapMethods entry, not once per CONSTANT_InvokeDynamic. |
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1594 bootstrap_specifier = Handle(THREAD, bsm_info); |
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1595 } |
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1596 if (!cpce->is_f1_null()) { |
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1597 methodHandle method( THREAD, cpce->f1_as_method()); |
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1598 Handle appendix( THREAD, cpce->appendix_if_resolved(pool)); |
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1599 Handle method_type(THREAD, cpce->method_type_if_resolved(pool)); |
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1600 result.set_handle(method, appendix, method_type, CHECK); |
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1601 return; |
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1602 } |
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1603 |
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1604 if (TraceMethodHandles) { |
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1605 ResourceMark rm(THREAD); |
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1606 tty->print_cr("resolve_invokedynamic #%d %s %s", |
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1607 ConstantPool::decode_invokedynamic_index(index), |
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1608 method_name->as_C_string(), method_signature->as_C_string()); |
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1609 tty->print(" BSM info: "); bootstrap_specifier->print(); |
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1610 } |
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1611 |
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1612 resolve_dynamic_call(result, bootstrap_specifier, method_name, method_signature, current_klass, CHECK); |
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1613 } |
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1614 |
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1615 void LinkResolver::resolve_dynamic_call(CallInfo& result, |
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1616 Handle bootstrap_specifier, |
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1617 Symbol* method_name, Symbol* method_signature, |
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1618 KlassHandle current_klass, |
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1619 TRAPS) { |
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1620 // JSR 292: this must resolve to an implicitly generated method MH.linkToCallSite(*...) |
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1621 // The appendix argument is likely to be a freshly-created CallSite. |
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1622 Handle resolved_appendix; |
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1623 Handle resolved_method_type; |
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1624 methodHandle resolved_method = |
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1625 SystemDictionary::find_dynamic_call_site_invoker(current_klass, |
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1626 bootstrap_specifier, |
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1627 method_name, method_signature, |
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1628 &resolved_appendix, |
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1629 &resolved_method_type, |
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1630 THREAD); |
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1631 if (HAS_PENDING_EXCEPTION) { |
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1632 if (TraceMethodHandles) { |
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1633 tty->print_cr("invokedynamic throws BSME for "INTPTR_FORMAT, (void *)PENDING_EXCEPTION); |
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1634 PENDING_EXCEPTION->print(); |
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1635 } |
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1636 if (PENDING_EXCEPTION->is_a(SystemDictionary::BootstrapMethodError_klass())) { |
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1637 // throw these guys, since they are already wrapped |
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1638 return; |
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1639 } |
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1640 if (!PENDING_EXCEPTION->is_a(SystemDictionary::LinkageError_klass())) { |
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1641 // intercept only LinkageErrors which might have failed to wrap |
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1642 return; |
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1643 } |
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1644 // See the "Linking Exceptions" section for the invokedynamic instruction in the JVMS. |
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1645 Handle nested_exception(THREAD, PENDING_EXCEPTION); |
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1646 CLEAR_PENDING_EXCEPTION; |
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1647 THROW_CAUSE(vmSymbols::java_lang_BootstrapMethodError(), nested_exception) |
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1648 } |
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1649 result.set_handle(resolved_method, resolved_appendix, resolved_method_type, CHECK); |
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1650 } |
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1651 |
0 | 1652 //------------------------------------------------------------------------------------------------------------------------ |
1653 #ifndef PRODUCT | |
1654 | |
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1655 void CallInfo::print() { |
0 | 1656 ResourceMark rm; |
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1657 const char* kindstr = "unknown"; |
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1658 switch (_call_kind) { |
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1659 case direct_call: kindstr = "direct"; break; |
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1660 case vtable_call: kindstr = "vtable"; break; |
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1661 case itable_call: kindstr = "itable"; break; |
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1662 } |
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1663 tty->print_cr("Call %s@%d %s", kindstr, _call_index, |
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1664 _resolved_method.is_null() ? "(none)" : _resolved_method->name_and_sig_as_C_string()); |
0 | 1665 } |
1666 | |
1667 #endif |