Mercurial > hg > graal-compiler
annotate src/share/vm/interpreter/linkResolver.cpp @ 14562:45812e05cdb3
Move narrow oop handling in reference maps to hotspot specific code.
author | Roland Schatz <roland.schatz@oracle.com> |
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date | Mon, 17 Mar 2014 12:07:49 +0100 |
parents | d8041d695d19 |
children | 4ca6dc0799b6 |
rev | line source |
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0 | 1 /* |
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2 * Copyright (c) 1997, 2014, Oracle and/or its affiliates. All rights reserved. |
0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
4 * | |
5 * This code is free software; you can redistribute it and/or modify it | |
6 * under the terms of the GNU General Public License version 2 only, as | |
7 * published by the Free Software Foundation. | |
8 * | |
9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
12 * version 2 for more details (a copy is included in the LICENSE file that | |
13 * accompanied this code). | |
14 * | |
15 * You should have received a copy of the GNU General Public License version | |
16 * 2 along with this work; if not, write to the Free Software Foundation, | |
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
18 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
1972 | 25 #include "precompiled.hpp" |
6934 | 26 #include "classfile/defaultMethods.hpp" |
1972 | 27 #include "classfile/systemDictionary.hpp" |
28 #include "classfile/vmSymbols.hpp" | |
29 #include "compiler/compileBroker.hpp" | |
30 #include "gc_interface/collectedHeap.inline.hpp" | |
31 #include "interpreter/bytecode.hpp" | |
32 #include "interpreter/interpreterRuntime.hpp" | |
33 #include "interpreter/linkResolver.hpp" | |
34 #include "memory/resourceArea.hpp" | |
35 #include "memory/universe.inline.hpp" | |
36 #include "oops/instanceKlass.hpp" | |
37 #include "oops/objArrayOop.hpp" | |
38 #include "prims/methodHandles.hpp" | |
39 #include "prims/nativeLookup.hpp" | |
40 #include "runtime/compilationPolicy.hpp" | |
41 #include "runtime/fieldDescriptor.hpp" | |
42 #include "runtime/frame.inline.hpp" | |
43 #include "runtime/handles.inline.hpp" | |
44 #include "runtime/reflection.hpp" | |
45 #include "runtime/signature.hpp" | |
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46 #include "runtime/thread.inline.hpp" |
1972 | 47 #include "runtime/vmThread.hpp" |
0 | 48 |
49 | |
50 //------------------------------------------------------------------------------------------------------------------------ | |
51 // Implementation of CallInfo | |
52 | |
53 | |
54 void CallInfo::set_static(KlassHandle resolved_klass, methodHandle resolved_method, TRAPS) { | |
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55 int vtable_index = Method::nonvirtual_vtable_index; |
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56 set_common(resolved_klass, resolved_klass, resolved_method, resolved_method, CallInfo::direct_call, vtable_index, CHECK); |
0 | 57 } |
58 | |
59 | |
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60 void CallInfo::set_interface(KlassHandle resolved_klass, KlassHandle selected_klass, methodHandle resolved_method, methodHandle selected_method, int itable_index, TRAPS) { |
0 | 61 // This is only called for interface methods. If the resolved_method |
62 // comes from java/lang/Object, it can be the subject of a virtual call, so | |
63 // we should pick the vtable index from the resolved method. | |
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64 // In that case, the caller must call set_virtual instead of set_interface. |
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65 assert(resolved_method->method_holder()->is_interface(), ""); |
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66 assert(itable_index == resolved_method()->itable_index(), ""); |
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67 set_common(resolved_klass, selected_klass, resolved_method, selected_method, CallInfo::itable_call, itable_index, CHECK); |
0 | 68 } |
69 | |
70 void CallInfo::set_virtual(KlassHandle resolved_klass, KlassHandle selected_klass, methodHandle resolved_method, methodHandle selected_method, int vtable_index, TRAPS) { | |
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71 assert(vtable_index >= 0 || vtable_index == Method::nonvirtual_vtable_index, "valid index"); |
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72 assert(vtable_index < 0 || !resolved_method->has_vtable_index() || vtable_index == resolved_method->vtable_index(), ""); |
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73 CallKind kind = (vtable_index >= 0 && !resolved_method->can_be_statically_bound() ? CallInfo::vtable_call : CallInfo::direct_call); |
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74 set_common(resolved_klass, selected_klass, resolved_method, selected_method, kind, vtable_index, CHECK); |
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75 assert(!resolved_method->is_compiled_lambda_form(), "these must be handled via an invokehandle call"); |
0 | 76 } |
77 | |
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78 void CallInfo::set_handle(methodHandle resolved_method, Handle resolved_appendix, Handle resolved_method_type, TRAPS) { |
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79 if (resolved_method.is_null()) { |
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80 THROW_MSG(vmSymbols::java_lang_InternalError(), "resolved method is null"); |
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81 } |
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82 KlassHandle resolved_klass = SystemDictionary::MethodHandle_klass(); |
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83 assert(resolved_method->intrinsic_id() == vmIntrinsics::_invokeBasic || |
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84 resolved_method->is_compiled_lambda_form(), |
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85 "linkMethod must return one of these"); |
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86 int vtable_index = Method::nonvirtual_vtable_index; |
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87 assert(!resolved_method->has_vtable_index(), ""); |
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88 set_common(resolved_klass, resolved_klass, resolved_method, resolved_method, CallInfo::direct_call, vtable_index, CHECK); |
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89 _resolved_appendix = resolved_appendix; |
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90 _resolved_method_type = resolved_method_type; |
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91 } |
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92 |
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93 void CallInfo::set_common(KlassHandle resolved_klass, |
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94 KlassHandle selected_klass, |
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95 methodHandle resolved_method, |
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96 methodHandle selected_method, |
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97 CallKind kind, |
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98 int index, |
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99 TRAPS) { |
0 | 100 assert(resolved_method->signature() == selected_method->signature(), "signatures must correspond"); |
101 _resolved_klass = resolved_klass; | |
102 _selected_klass = selected_klass; | |
103 _resolved_method = resolved_method; | |
104 _selected_method = selected_method; | |
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105 _call_kind = kind; |
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106 _call_index = index; |
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107 _resolved_appendix = Handle(); |
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108 DEBUG_ONLY(verify()); // verify before making side effects |
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109 |
1783 | 110 if (CompilationPolicy::must_be_compiled(selected_method)) { |
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111 // This path is unusual, mostly used by the '-Xcomp' stress test mode. |
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112 |
1783 | 113 // Note: with several active threads, the must_be_compiled may be true |
114 // while can_be_compiled is false; remove assert | |
115 // assert(CompilationPolicy::can_be_compiled(selected_method), "cannot compile"); | |
0 | 116 if (THREAD->is_Compiler_thread()) { |
117 // don't force compilation, resolve was on behalf of compiler | |
118 return; | |
119 } | |
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120 if (selected_method->method_holder()->is_not_initialized()) { |
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121 // 'is_not_initialized' means not only '!is_initialized', but also that |
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122 // initialization has not been started yet ('!being_initialized') |
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123 // Do not force compilation of methods in uninitialized classes. |
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124 // Note that doing this would throw an assert later, |
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125 // in CompileBroker::compile_method. |
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126 // We sometimes use the link resolver to do reflective lookups |
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127 // even before classes are initialized. |
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128 return; |
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129 } |
0 | 130 CompileBroker::compile_method(selected_method, InvocationEntryBci, |
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131 CompilationPolicy::policy()->initial_compile_level(), |
1783 | 132 methodHandle(), 0, "must_be_compiled", CHECK); |
0 | 133 } |
134 } | |
135 | |
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136 // utility query for unreflecting a method |
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137 CallInfo::CallInfo(Method* resolved_method, Klass* resolved_klass) { |
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138 Klass* resolved_method_holder = resolved_method->method_holder(); |
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139 if (resolved_klass == NULL) { // 2nd argument defaults to holder of 1st |
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140 resolved_klass = resolved_method_holder; |
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141 } |
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142 _resolved_klass = resolved_klass; |
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143 _selected_klass = resolved_klass; |
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144 _resolved_method = resolved_method; |
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145 _selected_method = resolved_method; |
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146 // classify: |
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147 CallKind kind = CallInfo::unknown_kind; |
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148 int index = resolved_method->vtable_index(); |
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149 if (resolved_method->can_be_statically_bound()) { |
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150 kind = CallInfo::direct_call; |
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151 } else if (!resolved_method_holder->is_interface()) { |
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152 // Could be an Object method inherited into an interface, but still a vtable call. |
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153 kind = CallInfo::vtable_call; |
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154 } else if (!resolved_klass->is_interface()) { |
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155 // A default or miranda method. Compute the vtable index. |
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156 ResourceMark rm; |
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157 klassVtable* vt = InstanceKlass::cast(resolved_klass)->vtable(); |
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158 index = LinkResolver::vtable_index_of_interface_method(resolved_klass, |
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159 resolved_method); |
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160 assert(index >= 0 , "we should have valid vtable index at this point"); |
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161 |
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162 kind = CallInfo::vtable_call; |
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163 } else if (resolved_method->has_vtable_index()) { |
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164 // Can occur if an interface redeclares a method of Object. |
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165 |
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166 #ifdef ASSERT |
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167 // Ensure that this is really the case. |
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168 KlassHandle object_klass = SystemDictionary::Object_klass(); |
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169 Method * object_resolved_method = object_klass()->vtable()->method_at(index); |
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170 assert(object_resolved_method->name() == resolved_method->name(), |
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171 err_msg("Object and interface method names should match at vtable index %d, %s != %s", |
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172 index, object_resolved_method->name()->as_C_string(), resolved_method->name()->as_C_string())); |
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173 assert(object_resolved_method->signature() == resolved_method->signature(), |
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174 err_msg("Object and interface method signatures should match at vtable index %d, %s != %s", |
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175 index, object_resolved_method->signature()->as_C_string(), resolved_method->signature()->as_C_string())); |
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176 #endif // ASSERT |
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177 |
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178 kind = CallInfo::vtable_call; |
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179 } else { |
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180 // A regular interface call. |
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181 kind = CallInfo::itable_call; |
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182 index = resolved_method->itable_index(); |
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183 } |
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184 assert(index == Method::nonvirtual_vtable_index || index >= 0, err_msg("bad index %d", index)); |
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185 _call_kind = kind; |
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186 _call_index = index; |
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187 _resolved_appendix = Handle(); |
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188 DEBUG_ONLY(verify()); |
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189 } |
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190 |
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191 #ifdef ASSERT |
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192 void CallInfo::verify() { |
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193 switch (call_kind()) { // the meaning and allowed value of index depends on kind |
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194 case CallInfo::direct_call: |
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195 if (_call_index == Method::nonvirtual_vtable_index) break; |
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196 // else fall through to check vtable index: |
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197 case CallInfo::vtable_call: |
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198 assert(resolved_klass()->verify_vtable_index(_call_index), ""); |
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199 break; |
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200 case CallInfo::itable_call: |
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201 assert(resolved_method()->method_holder()->verify_itable_index(_call_index), ""); |
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202 break; |
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203 case CallInfo::unknown_kind: |
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204 assert(call_kind() != CallInfo::unknown_kind, "CallInfo must be set"); |
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205 break; |
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206 default: |
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207 fatal(err_msg_res("Unexpected call kind %d", call_kind())); |
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208 } |
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209 } |
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210 #endif //ASSERT |
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211 |
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212 |
0 | 213 |
214 //------------------------------------------------------------------------------------------------------------------------ | |
215 // Klass resolution | |
216 | |
217 void LinkResolver::check_klass_accessability(KlassHandle ref_klass, KlassHandle sel_klass, TRAPS) { | |
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218 if (!Reflection::verify_class_access(ref_klass(), |
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219 sel_klass(), |
0 | 220 true)) { |
221 ResourceMark rm(THREAD); | |
222 Exceptions::fthrow( | |
223 THREAD_AND_LOCATION, | |
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224 vmSymbols::java_lang_IllegalAccessError(), |
0 | 225 "tried to access class %s from class %s", |
226 sel_klass->external_name(), | |
227 ref_klass->external_name() | |
228 ); | |
229 return; | |
230 } | |
231 } | |
232 | |
233 void LinkResolver::resolve_klass(KlassHandle& result, constantPoolHandle pool, int index, TRAPS) { | |
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234 Klass* result_oop = pool->klass_ref_at(index, CHECK); |
0 | 235 result = KlassHandle(THREAD, result_oop); |
236 } | |
237 | |
238 //------------------------------------------------------------------------------------------------------------------------ | |
239 // Method resolution | |
240 // | |
241 // According to JVM spec. $5.4.3c & $5.4.3d | |
242 | |
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243 // Look up method in klasses, including static methods |
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244 // Then look up local default methods |
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245 void LinkResolver::lookup_method_in_klasses(methodHandle& result, KlassHandle klass, Symbol* name, Symbol* signature, bool checkpolymorphism, bool in_imethod_resolve, TRAPS) { |
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246 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 |
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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()); |
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321 |
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322 // Specify 'true' in order to skip default methods when searching the |
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323 // interfaces. Function lookup_method_in_klasses() already looked for |
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324 // the method in the default methods table. |
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325 result = methodHandle(THREAD, ik->lookup_method_in_all_interfaces(name, signature, true)); |
0 | 326 } |
327 | |
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328 void LinkResolver::lookup_polymorphic_method(methodHandle& result, |
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329 KlassHandle klass, Symbol* name, Symbol* full_signature, |
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330 KlassHandle current_klass, |
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331 Handle *appendix_result_or_null, |
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332 Handle *method_type_result, |
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333 TRAPS) { |
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334 vmIntrinsics::ID iid = MethodHandles::signature_polymorphic_name_id(name); |
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335 if (TraceMethodHandles) { |
9082 | 336 ResourceMark rm(THREAD); |
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337 tty->print_cr("lookup_polymorphic_method iid=%s %s.%s%s", |
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338 vmIntrinsics::name_at(iid), klass->external_name(), |
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339 name->as_C_string(), full_signature->as_C_string()); |
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340 } |
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341 if (EnableInvokeDynamic && |
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342 klass() == SystemDictionary::MethodHandle_klass() && |
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343 iid != vmIntrinsics::_none) { |
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344 if (MethodHandles::is_signature_polymorphic_intrinsic(iid)) { |
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345 // Most of these do not need an up-call to Java to resolve, so can be done anywhere. |
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346 // Do not erase last argument type (MemberName) if it is a static linkTo method. |
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347 bool keep_last_arg = MethodHandles::is_signature_polymorphic_static(iid); |
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348 TempNewSymbol basic_signature = |
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349 MethodHandles::lookup_basic_type_signature(full_signature, keep_last_arg, CHECK); |
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350 if (TraceMethodHandles) { |
9082 | 351 ResourceMark rm(THREAD); |
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352 tty->print_cr("lookup_polymorphic_method %s %s => basic %s", |
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353 name->as_C_string(), |
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354 full_signature->as_C_string(), |
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355 basic_signature->as_C_string()); |
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356 } |
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357 result = SystemDictionary::find_method_handle_intrinsic(iid, |
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358 basic_signature, |
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359 CHECK); |
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360 if (result.not_null()) { |
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361 assert(result->is_method_handle_intrinsic(), "MH.invokeBasic or MH.linkTo* intrinsic"); |
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362 assert(result->intrinsic_id() != vmIntrinsics::_invokeGeneric, "wrong place to find this"); |
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363 assert(basic_signature == result->signature(), "predict the result signature"); |
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364 if (TraceMethodHandles) { |
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365 tty->print("lookup_polymorphic_method => intrinsic "); |
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366 result->print_on(tty); |
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367 } |
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368 return; |
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369 } |
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370 } else if (iid == vmIntrinsics::_invokeGeneric |
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371 && !THREAD->is_Compiler_thread() |
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372 && appendix_result_or_null != NULL) { |
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373 // This is a method with type-checking semantics. |
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374 // We will ask Java code to spin an adapter method for it. |
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375 if (!MethodHandles::enabled()) { |
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376 // Make sure the Java part of the runtime has been booted up. |
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377 Klass* natives = SystemDictionary::MethodHandleNatives_klass(); |
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378 if (natives == NULL || InstanceKlass::cast(natives)->is_not_initialized()) { |
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379 SystemDictionary::resolve_or_fail(vmSymbols::java_lang_invoke_MethodHandleNatives(), |
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380 Handle(), |
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381 Handle(), |
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382 true, |
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383 CHECK); |
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384 } |
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385 } |
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386 |
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387 Handle appendix; |
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388 Handle method_type; |
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389 result = SystemDictionary::find_method_handle_invoker(name, |
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390 full_signature, |
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391 current_klass, |
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392 &appendix, |
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393 &method_type, |
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394 CHECK); |
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395 if (TraceMethodHandles) { |
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396 tty->print("lookup_polymorphic_method => (via Java) "); |
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397 result->print_on(tty); |
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398 tty->print(" lookup_polymorphic_method => appendix = "); |
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399 if (appendix.is_null()) tty->print_cr("(none)"); |
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400 else appendix->print_on(tty); |
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401 } |
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402 if (result.not_null()) { |
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403 #ifdef ASSERT |
9082 | 404 ResourceMark rm(THREAD); |
405 | |
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406 TempNewSymbol basic_signature = |
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407 MethodHandles::lookup_basic_type_signature(full_signature, CHECK); |
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408 int actual_size_of_params = result->size_of_parameters(); |
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409 int expected_size_of_params = ArgumentSizeComputer(basic_signature).size(); |
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410 // +1 for MethodHandle.this, +1 for trailing MethodType |
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411 if (!MethodHandles::is_signature_polymorphic_static(iid)) expected_size_of_params += 1; |
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412 if (appendix.not_null()) expected_size_of_params += 1; |
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413 if (actual_size_of_params != expected_size_of_params) { |
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414 tty->print_cr("*** basic_signature=%s", basic_signature->as_C_string()); |
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415 tty->print_cr("*** result for %s: ", vmIntrinsics::name_at(iid)); |
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416 result->print(); |
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417 } |
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418 assert(actual_size_of_params == expected_size_of_params, |
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419 err_msg("%d != %d", actual_size_of_params, expected_size_of_params)); |
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420 #endif //ASSERT |
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421 |
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422 assert(appendix_result_or_null != NULL, ""); |
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423 (*appendix_result_or_null) = appendix; |
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424 (*method_type_result) = method_type; |
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425 return; |
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426 } |
710 | 427 } |
428 } | |
429 } | |
430 | |
0 | 431 void LinkResolver::check_method_accessability(KlassHandle ref_klass, |
432 KlassHandle resolved_klass, | |
433 KlassHandle sel_klass, | |
434 methodHandle sel_method, | |
435 TRAPS) { | |
436 | |
437 AccessFlags flags = sel_method->access_flags(); | |
438 | |
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439 // Special case: arrays always override "clone". JVMS 2.15. |
0 | 440 // If the resolved klass is an array class, and the declaring class |
441 // is java.lang.Object and the method is "clone", set the flags | |
442 // to public. | |
443 // | |
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444 // We'll check for the method name first, as that's most likely |
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445 // to be false (so we'll short-circuit out of these tests). |
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446 if (sel_method->name() == vmSymbols::clone_name() && |
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447 sel_klass() == SystemDictionary::Object_klass() && |
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448 resolved_klass->oop_is_array()) { |
0 | 449 // We need to change "protected" to "public". |
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450 assert(flags.is_protected(), "clone not protected?"); |
0 | 451 jint new_flags = flags.as_int(); |
452 new_flags = new_flags & (~JVM_ACC_PROTECTED); | |
453 new_flags = new_flags | JVM_ACC_PUBLIC; | |
454 flags.set_flags(new_flags); | |
455 } | |
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456 // assert(extra_arg_result_or_null != NULL, "must be able to return extra argument"); |
0 | 457 |
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458 if (!Reflection::verify_field_access(ref_klass(), |
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459 resolved_klass(), |
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460 sel_klass(), |
0 | 461 flags, |
462 true)) { | |
463 ResourceMark rm(THREAD); | |
464 Exceptions::fthrow( | |
465 THREAD_AND_LOCATION, | |
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466 vmSymbols::java_lang_IllegalAccessError(), |
0 | 467 "tried to access method %s.%s%s from class %s", |
468 sel_klass->external_name(), | |
469 sel_method->name()->as_C_string(), | |
470 sel_method->signature()->as_C_string(), | |
471 ref_klass->external_name() | |
472 ); | |
473 return; | |
474 } | |
475 } | |
476 | |
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477 void LinkResolver::resolve_method_statically(methodHandle& resolved_method, KlassHandle& resolved_klass, |
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478 Bytecodes::Code code, constantPoolHandle pool, int index, TRAPS) { |
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479 // This method is used only |
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480 // (1) in C2 from InlineTree::ok_to_inline (via ciMethod::check_call), |
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481 // and |
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482 // (2) in Bytecode_invoke::static_target |
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483 // It appears to fail when applied to an invokeinterface call site. |
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484 // FIXME: Remove this method and ciMethod::check_call; refactor to use the other LinkResolver entry points. |
0 | 485 // resolve klass |
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486 if (code == Bytecodes::_invokedynamic) { |
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487 resolved_klass = SystemDictionary::MethodHandle_klass(); |
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488 Symbol* method_name = vmSymbols::invoke_name(); |
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489 Symbol* method_signature = pool->signature_ref_at(index); |
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490 KlassHandle current_klass(THREAD, pool->pool_holder()); |
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491 resolve_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, true, false, CHECK); |
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492 return; |
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493 } |
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494 |
0 | 495 resolve_klass(resolved_klass, pool, index, CHECK); |
496 | |
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497 Symbol* method_name = pool->name_ref_at(index); |
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498 Symbol* method_signature = pool->signature_ref_at(index); |
0 | 499 KlassHandle current_klass(THREAD, pool->pool_holder()); |
500 | |
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501 if (pool->has_preresolution() |
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502 || (resolved_klass() == SystemDictionary::MethodHandle_klass() && |
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503 MethodHandles::is_signature_polymorphic_name(resolved_klass(), method_name))) { |
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504 Method* result_oop = ConstantPool::method_at_if_loaded(pool, index); |
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505 if (result_oop != NULL) { |
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506 resolved_method = methodHandle(THREAD, result_oop); |
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507 return; |
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508 } |
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509 } |
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510 |
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511 if (code == Bytecodes::_invokeinterface) { |
13413 | 512 resolve_interface_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, true, true, CHECK); |
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513 } else if (code == Bytecodes::_invokevirtual) { |
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514 resolve_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, true, true, CHECK); |
13413 | 515 } else if (!resolved_klass->is_interface()) { |
516 resolve_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, true, false, CHECK); | |
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517 } else { |
13413 | 518 bool nostatics = (code == Bytecodes::_invokestatic) ? false : true; |
519 resolve_interface_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, true, nostatics, CHECK); | |
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520 } |
0 | 521 } |
522 | |
523 void LinkResolver::resolve_method(methodHandle& resolved_method, KlassHandle resolved_klass, | |
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524 Symbol* method_name, Symbol* method_signature, |
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525 KlassHandle current_klass, bool check_access, |
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526 bool require_methodref, TRAPS) { |
0 | 527 |
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528 Handle nested_exception; |
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529 |
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530 // 1. check if methodref required, that resolved_klass is not interfacemethodref |
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531 if (require_methodref && resolved_klass->is_interface()) { |
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532 ResourceMark rm(THREAD); |
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533 char buf[200]; |
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534 jio_snprintf(buf, sizeof(buf), "Found interface %s, but class was expected", |
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535 resolved_klass()->external_name()); |
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536 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); |
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537 } |
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538 |
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539 // 2. lookup method in resolved klass and its super klasses |
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540 lookup_method_in_klasses(resolved_method, resolved_klass, method_name, method_signature, true, false, CHECK); |
0 | 541 |
542 if (resolved_method.is_null()) { // not found in the class hierarchy | |
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543 // 3. lookup method in all the interfaces implemented by the resolved klass |
0 | 544 lookup_method_in_interfaces(resolved_method, resolved_klass, method_name, method_signature, CHECK); |
545 | |
546 if (resolved_method.is_null()) { | |
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547 // JSR 292: see if this is an implicitly generated method MethodHandle.linkToVirtual(*...), etc |
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548 lookup_polymorphic_method(resolved_method, resolved_klass, method_name, method_signature, |
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549 current_klass, (Handle*)NULL, (Handle*)NULL, THREAD); |
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550 if (HAS_PENDING_EXCEPTION) { |
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551 nested_exception = Handle(THREAD, PENDING_EXCEPTION); |
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552 CLEAR_PENDING_EXCEPTION; |
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553 } |
710 | 554 } |
555 | |
556 if (resolved_method.is_null()) { | |
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557 // 4. method lookup failed |
0 | 558 ResourceMark rm(THREAD); |
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559 THROW_MSG_CAUSE(vmSymbols::java_lang_NoSuchMethodError(), |
6983 | 560 Method::name_and_sig_as_C_string(resolved_klass(), |
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561 method_name, |
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562 method_signature), |
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563 nested_exception); |
0 | 564 } |
565 } | |
566 | |
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567 // 5. access checks, access checking may be turned off when calling from within the VM. |
0 | 568 if (check_access) { |
569 assert(current_klass.not_null() , "current_klass should not be null"); | |
570 | |
571 // check if method can be accessed by the referring class | |
572 check_method_accessability(current_klass, | |
573 resolved_klass, | |
574 KlassHandle(THREAD, resolved_method->method_holder()), | |
575 resolved_method, | |
576 CHECK); | |
577 | |
578 // check loader constraints | |
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579 Handle loader (THREAD, InstanceKlass::cast(current_klass())->class_loader()); |
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580 Handle class_loader (THREAD, resolved_method->method_holder()->class_loader()); |
0 | 581 { |
582 ResourceMark rm(THREAD); | |
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583 Symbol* failed_type_symbol = |
0 | 584 SystemDictionary::check_signature_loaders(method_signature, loader, |
585 class_loader, true, CHECK); | |
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586 if (failed_type_symbol != NULL) { |
0 | 587 const char* msg = "loader constraint violation: when resolving method" |
588 " \"%s\" the class loader (instance of %s) of the current class, %s," | |
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589 " and the class loader (instance of %s) for the method's defining class, %s, have" |
0 | 590 " different Class objects for the type %s used in the signature"; |
6983 | 591 char* sig = Method::name_and_sig_as_C_string(resolved_klass(),method_name,method_signature); |
0 | 592 const char* loader1 = SystemDictionary::loader_name(loader()); |
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593 char* current = InstanceKlass::cast(current_klass())->name()->as_C_string(); |
0 | 594 const char* loader2 = SystemDictionary::loader_name(class_loader()); |
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595 char* target = InstanceKlass::cast(resolved_method->method_holder()) |
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596 ->name()->as_C_string(); |
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597 char* failed_type_name = failed_type_symbol->as_C_string(); |
0 | 598 size_t buflen = strlen(msg) + strlen(sig) + strlen(loader1) + |
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599 strlen(current) + strlen(loader2) + strlen(target) + |
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600 strlen(failed_type_name) + 1; |
0 | 601 char* buf = NEW_RESOURCE_ARRAY_IN_THREAD(THREAD, char, buflen); |
602 jio_snprintf(buf, buflen, msg, sig, loader1, current, loader2, | |
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603 target, failed_type_name); |
0 | 604 THROW_MSG(vmSymbols::java_lang_LinkageError(), buf); |
605 } | |
606 } | |
607 } | |
608 } | |
609 | |
610 void LinkResolver::resolve_interface_method(methodHandle& resolved_method, | |
611 KlassHandle resolved_klass, | |
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612 Symbol* method_name, |
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613 Symbol* method_signature, |
0 | 614 KlassHandle current_klass, |
13413 | 615 bool check_access, |
616 bool nostatics, TRAPS) { | |
0 | 617 |
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618 // check if klass is interface |
0 | 619 if (!resolved_klass->is_interface()) { |
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620 ResourceMark rm(THREAD); |
0 | 621 char buf[200]; |
6983 | 622 jio_snprintf(buf, sizeof(buf), "Found class %s, but interface was expected", resolved_klass()->external_name()); |
0 | 623 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); |
624 } | |
625 | |
626 // lookup method in this interface or its super, java.lang.Object | |
13413 | 627 // JDK8: also look for static methods |
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628 lookup_method_in_klasses(resolved_method, resolved_klass, method_name, method_signature, false, true, CHECK); |
0 | 629 |
630 if (resolved_method.is_null()) { | |
631 // lookup method in all the super-interfaces | |
632 lookup_method_in_interfaces(resolved_method, resolved_klass, method_name, method_signature, CHECK); | |
633 if (resolved_method.is_null()) { | |
634 // no method found | |
635 ResourceMark rm(THREAD); | |
636 THROW_MSG(vmSymbols::java_lang_NoSuchMethodError(), | |
6983 | 637 Method::name_and_sig_as_C_string(resolved_klass(), |
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638 method_name, |
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639 method_signature)); |
0 | 640 } |
641 } | |
642 | |
643 if (check_access) { | |
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644 // JDK8 adds non-public interface methods, and accessability check requirement |
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645 assert(current_klass.not_null() , "current_klass should not be null"); |
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646 |
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647 // check if method can be accessed by the referring class |
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648 check_method_accessability(current_klass, |
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649 resolved_klass, |
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650 KlassHandle(THREAD, resolved_method->method_holder()), |
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651 resolved_method, |
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652 CHECK); |
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653 |
0 | 654 HandleMark hm(THREAD); |
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655 Handle loader (THREAD, InstanceKlass::cast(current_klass())->class_loader()); |
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656 Handle class_loader (THREAD, resolved_method->method_holder()->class_loader()); |
0 | 657 { |
658 ResourceMark rm(THREAD); | |
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659 Symbol* failed_type_symbol = |
0 | 660 SystemDictionary::check_signature_loaders(method_signature, loader, |
661 class_loader, true, CHECK); | |
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662 if (failed_type_symbol != NULL) { |
0 | 663 const char* msg = "loader constraint violation: when resolving " |
664 "interface method \"%s\" the class loader (instance of %s) of the " | |
665 "current class, %s, and the class loader (instance of %s) for " | |
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666 "the method's defining class, %s, have different Class objects for the type %s " |
0 | 667 "used in the signature"; |
6983 | 668 char* sig = Method::name_and_sig_as_C_string(resolved_klass(),method_name,method_signature); |
0 | 669 const char* loader1 = SystemDictionary::loader_name(loader()); |
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670 char* current = InstanceKlass::cast(current_klass())->name()->as_C_string(); |
0 | 671 const char* loader2 = SystemDictionary::loader_name(class_loader()); |
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672 char* target = InstanceKlass::cast(resolved_method->method_holder()) |
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673 ->name()->as_C_string(); |
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674 char* failed_type_name = failed_type_symbol->as_C_string(); |
0 | 675 size_t buflen = strlen(msg) + strlen(sig) + strlen(loader1) + |
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676 strlen(current) + strlen(loader2) + strlen(target) + |
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677 strlen(failed_type_name) + 1; |
0 | 678 char* buf = NEW_RESOURCE_ARRAY_IN_THREAD(THREAD, char, buflen); |
679 jio_snprintf(buf, buflen, msg, sig, loader1, current, loader2, | |
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680 target, failed_type_name); |
0 | 681 THROW_MSG(vmSymbols::java_lang_LinkageError(), buf); |
682 } | |
683 } | |
684 } | |
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685 |
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686 if (nostatics && resolved_method->is_static()) { |
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687 ResourceMark rm(THREAD); |
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688 char buf[200]; |
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689 jio_snprintf(buf, sizeof(buf), "Expected instance not static method %s", |
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690 Method::name_and_sig_as_C_string(resolved_klass(), |
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691 resolved_method->name(), resolved_method->signature())); |
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692 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); |
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693 } |
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694 |
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695 if (TraceItables && Verbose) { |
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696 ResourceMark rm(THREAD); |
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697 tty->print("invokeinterface resolved method: caller-class:%s, compile-time-class:%s, method:%s, method_holder:%s, access_flags: ", |
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698 (current_klass.is_null() ? "<NULL>" : current_klass->internal_name()), |
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699 (resolved_klass.is_null() ? "<NULL>" : resolved_klass->internal_name()), |
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700 Method::name_and_sig_as_C_string(resolved_klass(), |
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701 resolved_method->name(), |
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702 resolved_method->signature()), |
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703 resolved_method->method_holder()->internal_name() |
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704 ); |
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705 resolved_method->access_flags().print_on(tty); |
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706 if (resolved_method->is_default_method()) { |
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707 tty->print("default "); |
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708 } |
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709 if (resolved_method->is_overpass()) { |
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710 tty->print("overpass"); |
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711 } |
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712 tty->cr(); |
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713 } |
0 | 714 } |
715 | |
716 //------------------------------------------------------------------------------------------------------------------------ | |
717 // Field resolution | |
718 | |
719 void LinkResolver::check_field_accessability(KlassHandle ref_klass, | |
720 KlassHandle resolved_klass, | |
721 KlassHandle sel_klass, | |
722 fieldDescriptor& fd, | |
723 TRAPS) { | |
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724 if (!Reflection::verify_field_access(ref_klass(), |
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725 resolved_klass(), |
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726 sel_klass(), |
0 | 727 fd.access_flags(), |
728 true)) { | |
729 ResourceMark rm(THREAD); | |
730 Exceptions::fthrow( | |
731 THREAD_AND_LOCATION, | |
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732 vmSymbols::java_lang_IllegalAccessError(), |
0 | 733 "tried to access field %s.%s from class %s", |
734 sel_klass->external_name(), | |
735 fd.name()->as_C_string(), | |
736 ref_klass->external_name() | |
737 ); | |
738 return; | |
739 } | |
740 } | |
741 | |
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742 void LinkResolver::resolve_field_access(fieldDescriptor& result, constantPoolHandle pool, int index, Bytecodes::Code byte, TRAPS) { |
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743 resolve_field_access(result, pool, index, byte, true, true, THREAD); |
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744 } |
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745 |
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746 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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747 // Load these early in case the resolve of the containing klass fails |
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748 Symbol* field = pool->name_ref_at(index); |
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749 Symbol* sig = pool->signature_ref_at(index); |
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750 |
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751 // resolve specified klass |
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752 KlassHandle resolved_klass; |
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753 resolve_klass(resolved_klass, pool, index, CHECK); |
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754 |
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755 KlassHandle current_klass(THREAD, pool->pool_holder()); |
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756 resolve_field(result, resolved_klass, field, sig, current_klass, byte, check_access, initialize_class, CHECK); |
0 | 757 } |
758 | |
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759 void LinkResolver::resolve_field(fieldDescriptor& fd, KlassHandle resolved_klass, Symbol* field, Symbol* sig, |
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760 KlassHandle current_klass, Bytecodes::Code byte, bool check_access, bool initialize_class, |
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761 TRAPS) { |
0 | 762 assert(byte == Bytecodes::_getstatic || byte == Bytecodes::_putstatic || |
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763 byte == Bytecodes::_getfield || byte == Bytecodes::_putfield || |
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764 (byte == Bytecodes::_nop && !check_access), "bad field access bytecode"); |
0 | 765 |
766 bool is_static = (byte == Bytecodes::_getstatic || byte == Bytecodes::_putstatic); | |
767 bool is_put = (byte == Bytecodes::_putfield || byte == Bytecodes::_putstatic); | |
768 | |
769 // Check if there's a resolved klass containing the field | |
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770 if (resolved_klass.is_null()) { |
0 | 771 ResourceMark rm(THREAD); |
772 THROW_MSG(vmSymbols::java_lang_NoSuchFieldError(), field->as_C_string()); | |
773 } | |
774 | |
775 // Resolve instance field | |
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776 KlassHandle sel_klass(THREAD, InstanceKlass::cast(resolved_klass())->find_field(field, sig, &fd)); |
0 | 777 // check if field exists; i.e., if a klass containing the field def has been selected |
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778 if (sel_klass.is_null()) { |
0 | 779 ResourceMark rm(THREAD); |
780 THROW_MSG(vmSymbols::java_lang_NoSuchFieldError(), field->as_C_string()); | |
781 } | |
782 | |
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783 if (!check_access) |
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784 // Access checking may be turned off when calling from within the VM. |
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785 return; |
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786 |
0 | 787 // check access |
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788 check_field_accessability(current_klass, resolved_klass, sel_klass, fd, CHECK); |
0 | 789 |
790 // check for errors | |
791 if (is_static != fd.is_static()) { | |
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792 ResourceMark rm(THREAD); |
0 | 793 char msg[200]; |
6983 | 794 jio_snprintf(msg, sizeof(msg), "Expected %s field %s.%s", is_static ? "static" : "non-static", resolved_klass()->external_name(), fd.name()->as_C_string()); |
0 | 795 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), msg); |
796 } | |
797 | |
798 // Final fields can only be accessed from its own class. | |
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799 if (is_put && fd.access_flags().is_final() && sel_klass() != current_klass()) { |
0 | 800 THROW(vmSymbols::java_lang_IllegalAccessError()); |
801 } | |
802 | |
803 // initialize resolved_klass if necessary | |
804 // note 1: the klass which declared the field must be initialized (i.e, sel_klass) | |
805 // according to the newest JVM spec (5.5, p.170) - was bug (gri 7/28/99) | |
806 // | |
807 // note 2: we don't want to force initialization if we are just checking | |
808 // if the field access is legal; e.g., during compilation | |
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809 if (is_static && initialize_class) { |
0 | 810 sel_klass->initialize(CHECK); |
811 } | |
812 | |
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813 if (sel_klass() != current_klass()) { |
0 | 814 HandleMark hm(THREAD); |
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815 Handle ref_loader (THREAD, InstanceKlass::cast(current_klass())->class_loader()); |
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816 Handle sel_loader (THREAD, InstanceKlass::cast(sel_klass())->class_loader()); |
0 | 817 { |
818 ResourceMark rm(THREAD); | |
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819 Symbol* failed_type_symbol = |
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820 SystemDictionary::check_signature_loaders(sig, |
0 | 821 ref_loader, sel_loader, |
822 false, | |
823 CHECK); | |
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824 if (failed_type_symbol != NULL) { |
0 | 825 const char* msg = "loader constraint violation: when resolving field" |
826 " \"%s\" the class loader (instance of %s) of the referring class, " | |
827 "%s, and the class loader (instance of %s) for the field's resolved " | |
828 "type, %s, have different Class objects for that type"; | |
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829 char* field_name = field->as_C_string(); |
0 | 830 const char* loader1 = SystemDictionary::loader_name(ref_loader()); |
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831 char* sel = InstanceKlass::cast(sel_klass())->name()->as_C_string(); |
0 | 832 const char* loader2 = SystemDictionary::loader_name(sel_loader()); |
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833 char* failed_type_name = failed_type_symbol->as_C_string(); |
0 | 834 size_t buflen = strlen(msg) + strlen(field_name) + strlen(loader1) + |
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835 strlen(sel) + strlen(loader2) + strlen(failed_type_name) + 1; |
0 | 836 char* buf = NEW_RESOURCE_ARRAY_IN_THREAD(THREAD, char, buflen); |
837 jio_snprintf(buf, buflen, msg, field_name, loader1, sel, loader2, | |
838 failed_type_name); | |
839 THROW_MSG(vmSymbols::java_lang_LinkageError(), buf); | |
840 } | |
841 } | |
842 } | |
843 | |
844 // return information. note that the klass is set to the actual klass containing the | |
845 // field, otherwise access of static fields in superclasses will not work. | |
846 } | |
847 | |
848 | |
849 //------------------------------------------------------------------------------------------------------------------------ | |
850 // Invoke resolution | |
851 // | |
852 // Naming conventions: | |
853 // | |
854 // resolved_method the specified method (i.e., static receiver specified via constant pool index) | |
855 // sel_method the selected method (selected via run-time lookup; e.g., based on dynamic receiver class) | |
856 // resolved_klass the specified klass (i.e., specified via constant pool index) | |
857 // recv_klass the receiver klass | |
858 | |
859 | |
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860 void LinkResolver::resolve_static_call(CallInfo& result, KlassHandle& resolved_klass, Symbol* method_name, |
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861 Symbol* method_signature, KlassHandle current_klass, |
0 | 862 bool check_access, bool initialize_class, TRAPS) { |
863 methodHandle resolved_method; | |
864 linktime_resolve_static_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK); | |
6983 | 865 resolved_klass = KlassHandle(THREAD, resolved_method->method_holder()); |
0 | 866 |
867 // Initialize klass (this should only happen if everything is ok) | |
868 if (initialize_class && resolved_klass->should_be_initialized()) { | |
869 resolved_klass->initialize(CHECK); | |
870 linktime_resolve_static_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK); | |
871 } | |
872 | |
873 // setup result | |
874 result.set_static(resolved_klass, resolved_method, CHECK); | |
875 } | |
876 | |
877 // throws linktime exceptions | |
878 void LinkResolver::linktime_resolve_static_method(methodHandle& resolved_method, KlassHandle resolved_klass, | |
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879 Symbol* method_name, Symbol* method_signature, |
0 | 880 KlassHandle current_klass, bool check_access, TRAPS) { |
881 | |
13413 | 882 if (!resolved_klass->is_interface()) { |
883 resolve_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, false, CHECK); | |
884 } else { | |
885 resolve_interface_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, false, CHECK); | |
886 } | |
0 | 887 assert(resolved_method->name() != vmSymbols::class_initializer_name(), "should have been checked in verifier"); |
888 | |
889 // check if static | |
890 if (!resolved_method->is_static()) { | |
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891 ResourceMark rm(THREAD); |
0 | 892 char buf[200]; |
6983 | 893 jio_snprintf(buf, sizeof(buf), "Expected static method %s", Method::name_and_sig_as_C_string(resolved_klass(), |
0 | 894 resolved_method->name(), |
895 resolved_method->signature())); | |
896 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); | |
897 } | |
898 } | |
899 | |
900 | |
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901 void LinkResolver::resolve_special_call(CallInfo& result, KlassHandle resolved_klass, Symbol* method_name, |
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902 Symbol* method_signature, KlassHandle current_klass, bool check_access, TRAPS) { |
0 | 903 methodHandle resolved_method; |
904 linktime_resolve_special_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK); | |
905 runtime_resolve_special_method(result, resolved_method, resolved_klass, current_klass, check_access, CHECK); | |
906 } | |
907 | |
908 // throws linktime exceptions | |
909 void LinkResolver::linktime_resolve_special_method(methodHandle& resolved_method, KlassHandle resolved_klass, | |
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910 Symbol* method_name, Symbol* method_signature, |
0 | 911 KlassHandle current_klass, bool check_access, TRAPS) { |
912 | |
12318
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913 // Invokespecial is called for multiple special reasons: |
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914 // <init> |
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915 // local private method invocation, for classes and interfaces |
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916 // superclass.method, which can also resolve to a default method |
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917 // and the selected method is recalculated relative to the direct superclass |
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918 // superinterface.method, which explicitly does not check shadowing |
6934 | 919 |
13413 | 920 if (!resolved_klass->is_interface()) { |
921 resolve_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, false, CHECK); | |
922 } else { | |
923 resolve_interface_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, true, CHECK); | |
924 } | |
0 | 925 |
926 // check if method name is <init>, that it is found in same klass as static type | |
927 if (resolved_method->name() == vmSymbols::object_initializer_name() && | |
928 resolved_method->method_holder() != resolved_klass()) { | |
929 ResourceMark rm(THREAD); | |
930 Exceptions::fthrow( | |
931 THREAD_AND_LOCATION, | |
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932 vmSymbols::java_lang_NoSuchMethodError(), |
0 | 933 "%s: method %s%s not found", |
934 resolved_klass->external_name(), | |
935 resolved_method->name()->as_C_string(), | |
936 resolved_method->signature()->as_C_string() | |
937 ); | |
938 return; | |
939 } | |
940 | |
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941 // check if invokespecial's interface method reference is in an indirect superinterface |
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942 if (!current_klass.is_null() && resolved_klass->is_interface()) { |
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943 Klass *klass_to_check = !InstanceKlass::cast(current_klass())->is_anonymous() ? |
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944 current_klass() : |
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945 InstanceKlass::cast(current_klass())->host_klass(); |
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946 // As of the fix for 4486457 we disable verification for all of the |
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947 // dynamically-generated bytecodes associated with the 1.4 |
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948 // reflection implementation, not just those associated with |
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949 // sun/reflect/SerializationConstructorAccessor. |
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950 bool is_reflect = JDK_Version::is_gte_jdk14x_version() && |
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951 UseNewReflection && |
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952 klass_to_check->is_subclass_of( |
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953 SystemDictionary::reflect_MagicAccessorImpl_klass()); |
13401
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954 |
13433
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955 if (!is_reflect && |
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956 !InstanceKlass::cast(klass_to_check)->is_same_or_direct_interface(resolved_klass())) { |
13401
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957 ResourceMark rm(THREAD); |
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958 char buf[200]; |
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959 jio_snprintf(buf, sizeof(buf), |
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960 "Interface method reference: %s, is in an indirect superinterface of %s", |
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961 Method::name_and_sig_as_C_string(resolved_klass(), |
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962 resolved_method->name(), |
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963 resolved_method->signature()), |
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964 current_klass->external_name()); |
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965 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); |
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966 } |
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967 } |
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968 |
0 | 969 // check if not static |
970 if (resolved_method->is_static()) { | |
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971 ResourceMark rm(THREAD); |
0 | 972 char buf[200]; |
973 jio_snprintf(buf, sizeof(buf), | |
974 "Expecting non-static method %s", | |
6983 | 975 Method::name_and_sig_as_C_string(resolved_klass(), |
0 | 976 resolved_method->name(), |
977 resolved_method->signature())); | |
978 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); | |
979 } | |
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980 |
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981 if (TraceItables && Verbose) { |
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982 ResourceMark rm(THREAD); |
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983 tty->print("invokespecial resolved method: caller-class:%s, compile-time-class:%s, method:%s, method_holder:%s, access_flags: ", |
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984 (current_klass.is_null() ? "<NULL>" : current_klass->internal_name()), |
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985 (resolved_klass.is_null() ? "<NULL>" : resolved_klass->internal_name()), |
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986 Method::name_and_sig_as_C_string(resolved_klass(), |
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987 resolved_method->name(), |
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988 resolved_method->signature()), |
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989 resolved_method->method_holder()->internal_name() |
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990 ); |
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991 resolved_method->access_flags().print_on(tty); |
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992 if (resolved_method->is_default_method()) { |
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993 tty->print("default "); |
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994 } |
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995 if (resolved_method->is_overpass()) { |
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996 tty->print("overpass"); |
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997 } |
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998 tty->cr(); |
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999 } |
0 | 1000 } |
1001 | |
1002 // throws runtime exceptions | |
1003 void LinkResolver::runtime_resolve_special_method(CallInfo& result, methodHandle resolved_method, KlassHandle resolved_klass, | |
1004 KlassHandle current_klass, bool check_access, TRAPS) { | |
1005 | |
1006 // resolved method is selected method unless we have an old-style lookup | |
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1007 // for a superclass method |
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1008 // Invokespecial for a superinterface, resolved method is selected method, |
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1009 // no checks for shadowing |
0 | 1010 methodHandle sel_method(THREAD, resolved_method()); |
1011 | |
1012 // check if this is an old-style super call and do a new lookup if so | |
1013 { KlassHandle method_klass = KlassHandle(THREAD, | |
1014 resolved_method->method_holder()); | |
1015 | |
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1016 if (check_access && |
0 | 1017 // a) check if ACC_SUPER flag is set for the current class |
8702 | 1018 (current_klass->is_super() || !AllowNonVirtualCalls) && |
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1019 // b) check if the class of the resolved_klass is a superclass |
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1020 // (not supertype in order to exclude interface classes) of the current class. |
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1021 // This check is not performed for super.invoke for interface methods |
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1022 // in super interfaces. |
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1023 current_klass->is_subclass_of(resolved_klass()) && |
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1024 current_klass() != resolved_klass() && |
0 | 1025 // c) check if the method is not <init> |
1026 resolved_method->name() != vmSymbols::object_initializer_name()) { | |
1027 // Lookup super method | |
1028 KlassHandle super_klass(THREAD, current_klass->super()); | |
1029 lookup_instance_method_in_klasses(sel_method, super_klass, | |
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1030 resolved_method->name(), |
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1031 resolved_method->signature(), CHECK); |
0 | 1032 // check if found |
1033 if (sel_method.is_null()) { | |
1034 ResourceMark rm(THREAD); | |
1035 THROW_MSG(vmSymbols::java_lang_AbstractMethodError(), | |
6983 | 1036 Method::name_and_sig_as_C_string(resolved_klass(), |
0 | 1037 resolved_method->name(), |
1038 resolved_method->signature())); | |
1039 } | |
1040 } | |
1041 } | |
1042 | |
1043 // check if not static | |
1044 if (sel_method->is_static()) { | |
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1045 ResourceMark rm(THREAD); |
0 | 1046 char buf[200]; |
6983 | 1047 jio_snprintf(buf, sizeof(buf), "Expecting non-static method %s", Method::name_and_sig_as_C_string(resolved_klass(), |
0 | 1048 resolved_method->name(), |
1049 resolved_method->signature())); | |
1050 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); | |
1051 } | |
1052 | |
1053 // check if abstract | |
1054 if (sel_method->is_abstract()) { | |
1055 ResourceMark rm(THREAD); | |
1056 THROW_MSG(vmSymbols::java_lang_AbstractMethodError(), | |
6983 | 1057 Method::name_and_sig_as_C_string(resolved_klass(), |
0 | 1058 sel_method->name(), |
1059 sel_method->signature())); | |
1060 } | |
1061 | |
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1062 if (TraceItables && Verbose) { |
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1063 ResourceMark rm(THREAD); |
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1064 tty->print("invokespecial selected method: resolved-class:%s, method:%s, method_holder:%s, access_flags: ", |
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1065 (resolved_klass.is_null() ? "<NULL>" : resolved_klass->internal_name()), |
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1066 Method::name_and_sig_as_C_string(resolved_klass(), |
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1067 sel_method->name(), |
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1068 sel_method->signature()), |
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1069 sel_method->method_holder()->internal_name() |
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1070 ); |
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1071 sel_method->access_flags().print_on(tty); |
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1072 if (sel_method->is_default_method()) { |
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1073 tty->print("default "); |
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1074 } |
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1075 if (sel_method->is_overpass()) { |
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1076 tty->print("overpass"); |
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1077 } |
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1078 tty->cr(); |
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1079 } |
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1080 |
0 | 1081 // setup result |
1082 result.set_static(resolved_klass, sel_method, CHECK); | |
1083 } | |
1084 | |
1085 void LinkResolver::resolve_virtual_call(CallInfo& result, Handle recv, KlassHandle receiver_klass, KlassHandle resolved_klass, | |
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1086 Symbol* method_name, Symbol* method_signature, KlassHandle current_klass, |
0 | 1087 bool check_access, bool check_null_and_abstract, TRAPS) { |
1088 methodHandle resolved_method; | |
1089 linktime_resolve_virtual_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK); | |
1090 runtime_resolve_virtual_method(result, resolved_method, resolved_klass, recv, receiver_klass, check_null_and_abstract, CHECK); | |
1091 } | |
1092 | |
1093 // throws linktime exceptions | |
1094 void LinkResolver::linktime_resolve_virtual_method(methodHandle &resolved_method, KlassHandle resolved_klass, | |
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1095 Symbol* method_name, Symbol* method_signature, |
0 | 1096 KlassHandle current_klass, bool check_access, TRAPS) { |
1097 // normal method resolution | |
12858
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1098 resolve_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, true, CHECK); |
0 | 1099 |
1100 assert(resolved_method->name() != vmSymbols::object_initializer_name(), "should have been checked in verifier"); | |
1101 assert(resolved_method->name() != vmSymbols::class_initializer_name (), "should have been checked in verifier"); | |
1102 | |
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1103 // check if private interface method |
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1104 if (resolved_klass->is_interface() && resolved_method->is_private()) { |
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1105 ResourceMark rm(THREAD); |
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1106 char buf[200]; |
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1107 jio_snprintf(buf, sizeof(buf), "private interface method requires invokespecial, not invokevirtual: method %s, caller-class:%s", |
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1108 Method::name_and_sig_as_C_string(resolved_klass(), |
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1109 resolved_method->name(), |
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1110 resolved_method->signature()), |
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1111 (current_klass.is_null() ? "<NULL>" : current_klass->internal_name())); |
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1112 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); |
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1113 } |
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1114 |
0 | 1115 // check if not static |
1116 if (resolved_method->is_static()) { | |
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1117 ResourceMark rm(THREAD); |
0 | 1118 char buf[200]; |
6983 | 1119 jio_snprintf(buf, sizeof(buf), "Expecting non-static method %s", Method::name_and_sig_as_C_string(resolved_klass(), |
0 | 1120 resolved_method->name(), |
1121 resolved_method->signature())); | |
1122 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); | |
1123 } | |
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1124 |
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1125 if (PrintVtables && Verbose) { |
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1126 ResourceMark rm(THREAD); |
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1127 tty->print("invokevirtual resolved method: caller-class:%s, compile-time-class:%s, method:%s, method_holder:%s, access_flags: ", |
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1128 (current_klass.is_null() ? "<NULL>" : current_klass->internal_name()), |
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1129 (resolved_klass.is_null() ? "<NULL>" : resolved_klass->internal_name()), |
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1130 Method::name_and_sig_as_C_string(resolved_klass(), |
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1131 resolved_method->name(), |
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1132 resolved_method->signature()), |
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1133 resolved_method->method_holder()->internal_name() |
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1134 ); |
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1135 resolved_method->access_flags().print_on(tty); |
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1136 if (resolved_method->is_default_method()) { |
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1137 tty->print("default "); |
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1138 } |
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1139 if (resolved_method->is_overpass()) { |
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1140 tty->print("overpass"); |
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|
1141 } |
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1142 tty->cr(); |
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|
1143 } |
0 | 1144 } |
1145 | |
1146 // throws runtime exceptions | |
1147 void LinkResolver::runtime_resolve_virtual_method(CallInfo& result, | |
1148 methodHandle resolved_method, | |
1149 KlassHandle resolved_klass, | |
1150 Handle recv, | |
1151 KlassHandle recv_klass, | |
1152 bool check_null_and_abstract, | |
1153 TRAPS) { | |
1154 | |
1155 // setup default return values | |
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1156 int vtable_index = Method::invalid_vtable_index; |
0 | 1157 methodHandle selected_method; |
1158 | |
1159 assert(recv.is_null() || recv->is_oop(), "receiver is not an oop"); | |
1160 | |
1161 // runtime method resolution | |
1162 if (check_null_and_abstract && recv.is_null()) { // check if receiver exists | |
1163 THROW(vmSymbols::java_lang_NullPointerException()); | |
1164 } | |
1165 | |
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1166 // Virtual methods cannot be resolved before its klass has been linked, for otherwise the Method*'s |
0 | 1167 // has not been rewritten, and the vtable initialized. Make sure to do this after the nullcheck, since |
1168 // a missing receiver might result in a bogus lookup. | |
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8000725: NPG: method_holder() and pool_holder() and pool_holder field should be InstanceKlass
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|
1169 assert(resolved_method->method_holder()->is_linked(), "must be linked"); |
0 | 1170 |
1171 // do lookup based on receiver klass using the vtable index | |
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1172 if (resolved_method->method_holder()->is_interface()) { // miranda method |
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1173 vtable_index = vtable_index_of_interface_method(resolved_klass, |
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1174 resolved_method); |
0 | 1175 assert(vtable_index >= 0 , "we should have valid vtable index at this point"); |
1176 | |
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1177 InstanceKlass* inst = InstanceKlass::cast(recv_klass()); |
0 | 1178 selected_method = methodHandle(THREAD, inst->method_at_vtable(vtable_index)); |
1179 } else { | |
1180 // at this point we are sure that resolved_method is virtual and not | |
1181 // a miranda method; therefore, it must have a valid vtable index. | |
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1182 assert(!resolved_method->has_itable_index(), ""); |
0 | 1183 vtable_index = resolved_method->vtable_index(); |
1184 // We could get a negative vtable_index for final methods, | |
1185 // because as an optimization they are they are never put in the vtable, | |
1186 // unless they override an existing method. | |
1187 // If we do get a negative, it means the resolved method is the the selected | |
1188 // method, and it can never be changed by an override. | |
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1189 if (vtable_index == Method::nonvirtual_vtable_index) { |
0 | 1190 assert(resolved_method->can_be_statically_bound(), "cannot override this method"); |
1191 selected_method = resolved_method; | |
1192 } else { | |
1193 // recv_klass might be an arrayKlassOop but all vtables start at | |
1194 // the same place. The cast is to avoid virtual call and assertion. | |
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1195 InstanceKlass* inst = (InstanceKlass*)recv_klass(); |
0 | 1196 selected_method = methodHandle(THREAD, inst->method_at_vtable(vtable_index)); |
1197 } | |
1198 } | |
1199 | |
1200 // check if method exists | |
1201 if (selected_method.is_null()) { | |
1202 ResourceMark rm(THREAD); | |
1203 THROW_MSG(vmSymbols::java_lang_AbstractMethodError(), | |
6983 | 1204 Method::name_and_sig_as_C_string(resolved_klass(), |
0 | 1205 resolved_method->name(), |
1206 resolved_method->signature())); | |
1207 } | |
1208 | |
1209 // check if abstract | |
1210 if (check_null_and_abstract && selected_method->is_abstract()) { | |
1211 ResourceMark rm(THREAD); | |
1212 THROW_MSG(vmSymbols::java_lang_AbstractMethodError(), | |
6983 | 1213 Method::name_and_sig_as_C_string(resolved_klass(), |
0 | 1214 selected_method->name(), |
1215 selected_method->signature())); | |
1216 } | |
1217 | |
12318
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1218 if (PrintVtables && Verbose) { |
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|
1219 ResourceMark rm(THREAD); |
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1220 tty->print("invokevirtual selected method: receiver-class:%s, resolved-class:%s, method:%s, method_holder:%s, vtable_index:%d, access_flags: ", |
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|
1221 (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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|
1222 (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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|
1223 Method::name_and_sig_as_C_string(resolved_klass(), |
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|
1224 resolved_method->name(), |
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8011311: Private interface methods. Default conflicts:ICCE. no erased_super_default.
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|
1225 resolved_method->signature()), |
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8011311: Private interface methods. Default conflicts:ICCE. no erased_super_default.
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|
1226 selected_method->method_holder()->internal_name(), |
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|
1227 vtable_index |
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8011311: Private interface methods. Default conflicts:ICCE. no erased_super_default.
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|
1228 ); |
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8011311: Private interface methods. Default conflicts:ICCE. no erased_super_default.
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|
1229 selected_method->access_flags().print_on(tty); |
12823
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|
1230 if (selected_method->is_default_method()) { |
13055
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|
1231 tty->print("default "); |
12318
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|
1232 } |
12823
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|
1233 if (selected_method->is_overpass()) { |
12318
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|
1234 tty->print("overpass"); |
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|
1235 } |
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|
1236 tty->cr(); |
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|
1237 } |
0 | 1238 // setup result |
1239 result.set_virtual(resolved_klass, recv_klass, resolved_method, selected_method, vtable_index, CHECK); | |
1240 } | |
1241 | |
1242 void LinkResolver::resolve_interface_call(CallInfo& result, Handle recv, KlassHandle recv_klass, KlassHandle resolved_klass, | |
2177
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diff
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|
1243 Symbol* method_name, Symbol* method_signature, KlassHandle current_klass, |
0 | 1244 bool check_access, bool check_null_and_abstract, TRAPS) { |
1245 methodHandle resolved_method; | |
1246 linktime_resolve_interface_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK); | |
1247 runtime_resolve_interface_method(result, resolved_method, resolved_klass, recv, recv_klass, check_null_and_abstract, CHECK); | |
1248 } | |
1249 | |
1250 // throws linktime exceptions | |
2177
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diff
changeset
|
1251 void LinkResolver::linktime_resolve_interface_method(methodHandle& resolved_method, KlassHandle resolved_klass, Symbol* method_name, |
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
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diff
changeset
|
1252 Symbol* method_signature, KlassHandle current_klass, bool check_access, TRAPS) { |
0 | 1253 // normal interface method resolution |
13413 | 1254 resolve_interface_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, true, CHECK); |
0 | 1255 |
1256 assert(resolved_method->name() != vmSymbols::object_initializer_name(), "should have been checked in verifier"); | |
1257 assert(resolved_method->name() != vmSymbols::class_initializer_name (), "should have been checked in verifier"); | |
1258 } | |
1259 | |
1260 // throws runtime exceptions | |
1261 void LinkResolver::runtime_resolve_interface_method(CallInfo& result, methodHandle resolved_method, KlassHandle resolved_klass, | |
1262 Handle recv, KlassHandle recv_klass, bool check_null_and_abstract, TRAPS) { | |
1263 // check if receiver exists | |
1264 if (check_null_and_abstract && recv.is_null()) { | |
1265 THROW(vmSymbols::java_lang_NullPointerException()); | |
1266 } | |
1267 | |
12318
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|
1268 // check if private interface method |
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|
1269 if (resolved_klass->is_interface() && resolved_method->is_private()) { |
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8011311: Private interface methods. Default conflicts:ICCE. no erased_super_default.
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|
1270 ResourceMark rm(THREAD); |
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8011311: Private interface methods. Default conflicts:ICCE. no erased_super_default.
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diff
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|
1271 char buf[200]; |
36b97be47bde
8011311: Private interface methods. Default conflicts:ICCE. no erased_super_default.
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|
1272 jio_snprintf(buf, sizeof(buf), "private interface method requires invokespecial, not invokeinterface: method %s", |
36b97be47bde
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|
1273 Method::name_and_sig_as_C_string(resolved_klass(), |
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|
1274 resolved_method->name(), |
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|
1275 resolved_method->signature())); |
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8011311: Private interface methods. Default conflicts:ICCE. no erased_super_default.
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|
1276 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); |
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|
1277 } |
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|
1278 |
0 | 1279 // check if receiver klass implements the resolved interface |
1280 if (!recv_klass->is_subtype_of(resolved_klass())) { | |
3324
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|
1281 ResourceMark rm(THREAD); |
0 | 1282 char buf[200]; |
1283 jio_snprintf(buf, sizeof(buf), "Class %s does not implement the requested interface %s", | |
6983 | 1284 recv_klass()->external_name(), |
1285 resolved_klass()->external_name()); | |
0 | 1286 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); |
1287 } | |
14221
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diff
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|
1288 |
0 | 1289 // do lookup based on receiver klass |
1290 methodHandle sel_method; | |
14221
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13436
diff
changeset
|
1291 // This search must match the linktime preparation search for itable initialization |
2353011244bd
8027804: JCK resolveMethod test fails expecting AbstractMethodError
hseigel
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diff
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|
1292 // to correctly enforce loader constraints for interface method inheritance |
0 | 1293 lookup_instance_method_in_klasses(sel_method, recv_klass, |
2177
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diff
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|
1294 resolved_method->name(), |
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
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diff
changeset
|
1295 resolved_method->signature(), CHECK); |
12264
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|
1296 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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|
1297 // In theory this is a harmless placeholder value, but |
b2e698d2276c
8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation
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diff
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|
1298 // 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
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|
1299 // This needs further study. |
b2e698d2276c
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1300 sel_method = resolved_method; |
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1301 } |
0 | 1302 // check if method exists |
1303 if (sel_method.is_null()) { | |
1304 ResourceMark rm(THREAD); | |
1305 THROW_MSG(vmSymbols::java_lang_AbstractMethodError(), | |
6983 | 1306 Method::name_and_sig_as_C_string(recv_klass(), |
0 | 1307 resolved_method->name(), |
1308 resolved_method->signature())); | |
1309 } | |
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1310 // check access |
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1311 // Throw Illegal Access Error if sel_method is not public. |
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1312 if (!sel_method->is_public()) { |
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1313 ResourceMark rm(THREAD); |
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1314 THROW_MSG(vmSymbols::java_lang_IllegalAccessError(), |
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1315 Method::name_and_sig_as_C_string(recv_klass(), |
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1316 sel_method->name(), |
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1317 sel_method->signature())); |
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1318 } |
0 | 1319 // check if abstract |
1320 if (check_null_and_abstract && sel_method->is_abstract()) { | |
1321 ResourceMark rm(THREAD); | |
1322 THROW_MSG(vmSymbols::java_lang_AbstractMethodError(), | |
6983 | 1323 Method::name_and_sig_as_C_string(recv_klass(), |
0 | 1324 sel_method->name(), |
1325 sel_method->signature())); | |
1326 } | |
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1327 |
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1328 if (TraceItables && Verbose) { |
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1329 ResourceMark rm(THREAD); |
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1330 tty->print("invokeinterface selected method: receiver-class:%s, resolved-class:%s, method:%s, method_holder:%s, access_flags: ", |
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1331 (recv_klass.is_null() ? "<NULL>" : recv_klass->internal_name()), |
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1332 (resolved_klass.is_null() ? "<NULL>" : resolved_klass->internal_name()), |
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1333 Method::name_and_sig_as_C_string(resolved_klass(), |
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1334 resolved_method->name(), |
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1335 resolved_method->signature()), |
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1336 sel_method->method_holder()->internal_name() |
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1337 ); |
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1338 sel_method->access_flags().print_on(tty); |
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1339 if (sel_method->is_default_method()) { |
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1340 tty->print("default "); |
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1341 } |
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1342 if (sel_method->is_overpass()) { |
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1343 tty->print("overpass"); |
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1344 } |
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|
1345 tty->cr(); |
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|
1346 } |
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|
1347 // setup result |
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1348 if (!resolved_method->has_itable_index()) { |
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1349 int vtable_index = resolved_method->vtable_index(); |
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1350 assert(vtable_index == sel_method->vtable_index(), "sanity check"); |
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1351 result.set_virtual(resolved_klass, recv_klass, resolved_method, sel_method, vtable_index, CHECK); |
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1352 } else { |
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|
1353 int itable_index = resolved_method()->itable_index(); |
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|
1354 result.set_interface(resolved_klass, recv_klass, resolved_method, sel_method, itable_index, CHECK); |
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1355 } |
0 | 1356 } |
1357 | |
1358 | |
1359 methodHandle LinkResolver::linktime_resolve_interface_method_or_null( | |
1360 KlassHandle resolved_klass, | |
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|
1361 Symbol* method_name, |
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1362 Symbol* method_signature, |
0 | 1363 KlassHandle current_klass, |
1364 bool check_access) { | |
1365 EXCEPTION_MARK; | |
1366 methodHandle method_result; | |
1367 linktime_resolve_interface_method(method_result, resolved_klass, method_name, method_signature, current_klass, check_access, THREAD); | |
1368 if (HAS_PENDING_EXCEPTION) { | |
1369 CLEAR_PENDING_EXCEPTION; | |
1370 return methodHandle(); | |
1371 } else { | |
1372 return method_result; | |
1373 } | |
1374 } | |
1375 | |
1376 methodHandle LinkResolver::linktime_resolve_virtual_method_or_null( | |
1377 KlassHandle resolved_klass, | |
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1378 Symbol* method_name, |
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|
1379 Symbol* method_signature, |
0 | 1380 KlassHandle current_klass, |
1381 bool check_access) { | |
1382 EXCEPTION_MARK; | |
1383 methodHandle method_result; | |
1384 linktime_resolve_virtual_method(method_result, resolved_klass, method_name, method_signature, current_klass, check_access, THREAD); | |
1385 if (HAS_PENDING_EXCEPTION) { | |
1386 CLEAR_PENDING_EXCEPTION; | |
1387 return methodHandle(); | |
1388 } else { | |
1389 return method_result; | |
1390 } | |
1391 } | |
1392 | |
1393 methodHandle LinkResolver::resolve_virtual_call_or_null( | |
1394 KlassHandle receiver_klass, | |
1395 KlassHandle resolved_klass, | |
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1396 Symbol* name, |
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1397 Symbol* signature, |
0 | 1398 KlassHandle current_klass) { |
1399 EXCEPTION_MARK; | |
1400 CallInfo info; | |
1401 resolve_virtual_call(info, Handle(), receiver_klass, resolved_klass, name, signature, current_klass, true, false, THREAD); | |
1402 if (HAS_PENDING_EXCEPTION) { | |
1403 CLEAR_PENDING_EXCEPTION; | |
1404 return methodHandle(); | |
1405 } | |
1406 return info.selected_method(); | |
1407 } | |
1408 | |
1409 methodHandle LinkResolver::resolve_interface_call_or_null( | |
1410 KlassHandle receiver_klass, | |
1411 KlassHandle resolved_klass, | |
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1412 Symbol* name, |
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1413 Symbol* signature, |
0 | 1414 KlassHandle current_klass) { |
1415 EXCEPTION_MARK; | |
1416 CallInfo info; | |
1417 resolve_interface_call(info, Handle(), receiver_klass, resolved_klass, name, signature, current_klass, true, false, THREAD); | |
1418 if (HAS_PENDING_EXCEPTION) { | |
1419 CLEAR_PENDING_EXCEPTION; | |
1420 return methodHandle(); | |
1421 } | |
1422 return info.selected_method(); | |
1423 } | |
1424 | |
1425 int LinkResolver::resolve_virtual_vtable_index( | |
1426 KlassHandle receiver_klass, | |
1427 KlassHandle resolved_klass, | |
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1428 Symbol* name, |
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1429 Symbol* signature, |
0 | 1430 KlassHandle current_klass) { |
1431 EXCEPTION_MARK; | |
1432 CallInfo info; | |
1433 resolve_virtual_call(info, Handle(), receiver_klass, resolved_klass, name, signature, current_klass, true, false, THREAD); | |
1434 if (HAS_PENDING_EXCEPTION) { | |
1435 CLEAR_PENDING_EXCEPTION; | |
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1436 return Method::invalid_vtable_index; |
0 | 1437 } |
1438 return info.vtable_index(); | |
1439 } | |
1440 | |
1441 methodHandle LinkResolver::resolve_static_call_or_null( | |
1442 KlassHandle resolved_klass, | |
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|
1443 Symbol* name, |
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|
1444 Symbol* signature, |
0 | 1445 KlassHandle current_klass) { |
1446 EXCEPTION_MARK; | |
1447 CallInfo info; | |
1448 resolve_static_call(info, resolved_klass, name, signature, current_klass, true, false, THREAD); | |
1449 if (HAS_PENDING_EXCEPTION) { | |
1450 CLEAR_PENDING_EXCEPTION; | |
1451 return methodHandle(); | |
1452 } | |
1453 return info.selected_method(); | |
1454 } | |
1455 | |
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1456 methodHandle LinkResolver::resolve_special_call_or_null(KlassHandle resolved_klass, Symbol* name, Symbol* signature, |
0 | 1457 KlassHandle current_klass) { |
1458 EXCEPTION_MARK; | |
1459 CallInfo info; | |
1460 resolve_special_call(info, resolved_klass, name, signature, current_klass, true, THREAD); | |
1461 if (HAS_PENDING_EXCEPTION) { | |
1462 CLEAR_PENDING_EXCEPTION; | |
1463 return methodHandle(); | |
1464 } | |
1465 return info.selected_method(); | |
1466 } | |
1467 | |
1468 | |
1469 | |
1470 //------------------------------------------------------------------------------------------------------------------------ | |
1471 // ConstantPool entries | |
1472 | |
1473 void LinkResolver::resolve_invoke(CallInfo& result, Handle recv, constantPoolHandle pool, int index, Bytecodes::Code byte, TRAPS) { | |
1474 switch (byte) { | |
1475 case Bytecodes::_invokestatic : resolve_invokestatic (result, pool, index, CHECK); break; | |
1476 case Bytecodes::_invokespecial : resolve_invokespecial (result, pool, index, CHECK); break; | |
1477 case Bytecodes::_invokevirtual : resolve_invokevirtual (result, recv, pool, index, CHECK); break; | |
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1478 case Bytecodes::_invokehandle : resolve_invokehandle (result, pool, index, CHECK); break; |
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1479 case Bytecodes::_invokedynamic : resolve_invokedynamic (result, pool, index, CHECK); break; |
0 | 1480 case Bytecodes::_invokeinterface: resolve_invokeinterface(result, recv, pool, index, CHECK); break; |
1481 } | |
1482 return; | |
1483 } | |
1484 | |
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1485 void LinkResolver::resolve_pool(KlassHandle& resolved_klass, Symbol*& method_name, Symbol*& method_signature, |
0 | 1486 KlassHandle& current_klass, constantPoolHandle pool, int index, TRAPS) { |
1487 // resolve klass | |
1488 resolve_klass(resolved_klass, pool, index, CHECK); | |
1489 | |
1490 // Get name, signature, and static klass | |
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1491 method_name = pool->name_ref_at(index); |
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1492 method_signature = pool->signature_ref_at(index); |
0 | 1493 current_klass = KlassHandle(THREAD, pool->pool_holder()); |
1494 } | |
1495 | |
1496 | |
1497 void LinkResolver::resolve_invokestatic(CallInfo& result, constantPoolHandle pool, int index, TRAPS) { | |
1498 KlassHandle resolved_klass; | |
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1499 Symbol* method_name = NULL; |
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1500 Symbol* method_signature = NULL; |
0 | 1501 KlassHandle current_klass; |
1502 resolve_pool(resolved_klass, method_name, method_signature, current_klass, pool, index, CHECK); | |
1503 resolve_static_call(result, resolved_klass, method_name, method_signature, current_klass, true, true, CHECK); | |
1504 } | |
1505 | |
1506 | |
1507 void LinkResolver::resolve_invokespecial(CallInfo& result, constantPoolHandle pool, int index, TRAPS) { | |
1508 KlassHandle resolved_klass; | |
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1509 Symbol* method_name = NULL; |
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1510 Symbol* method_signature = NULL; |
0 | 1511 KlassHandle current_klass; |
1512 resolve_pool(resolved_klass, method_name, method_signature, current_klass, pool, index, CHECK); | |
1513 resolve_special_call(result, resolved_klass, method_name, method_signature, current_klass, true, CHECK); | |
1514 } | |
1515 | |
1516 | |
1517 void LinkResolver::resolve_invokevirtual(CallInfo& result, Handle recv, | |
1518 constantPoolHandle pool, int index, | |
1519 TRAPS) { | |
1520 | |
1521 KlassHandle resolved_klass; | |
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1522 Symbol* method_name = NULL; |
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1523 Symbol* method_signature = NULL; |
0 | 1524 KlassHandle current_klass; |
1525 resolve_pool(resolved_klass, method_name, method_signature, current_klass, pool, index, CHECK); | |
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1526 KlassHandle recvrKlass (THREAD, recv.is_null() ? (Klass*)NULL : recv->klass()); |
0 | 1527 resolve_virtual_call(result, recv, recvrKlass, resolved_klass, method_name, method_signature, current_klass, true, true, CHECK); |
1528 } | |
1529 | |
1530 | |
1531 void LinkResolver::resolve_invokeinterface(CallInfo& result, Handle recv, constantPoolHandle pool, int index, TRAPS) { | |
1532 KlassHandle resolved_klass; | |
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1533 Symbol* method_name = NULL; |
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1534 Symbol* method_signature = NULL; |
0 | 1535 KlassHandle current_klass; |
1536 resolve_pool(resolved_klass, method_name, method_signature, current_klass, pool, index, CHECK); | |
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1537 KlassHandle recvrKlass (THREAD, recv.is_null() ? (Klass*)NULL : recv->klass()); |
0 | 1538 resolve_interface_call(result, recv, recvrKlass, resolved_klass, method_name, method_signature, current_klass, true, true, CHECK); |
1539 } | |
1540 | |
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1541 |
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1542 void LinkResolver::resolve_invokehandle(CallInfo& result, constantPoolHandle pool, int index, TRAPS) { |
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1543 assert(EnableInvokeDynamic, ""); |
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1544 // This guy is reached from InterpreterRuntime::resolve_invokehandle. |
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1545 KlassHandle resolved_klass; |
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1546 Symbol* method_name = NULL; |
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1547 Symbol* method_signature = NULL; |
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1548 KlassHandle current_klass; |
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1549 resolve_pool(resolved_klass, method_name, method_signature, current_klass, pool, index, CHECK); |
9082 | 1550 if (TraceMethodHandles) { |
1551 ResourceMark rm(THREAD); | |
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1552 tty->print_cr("resolve_invokehandle %s %s", method_name->as_C_string(), method_signature->as_C_string()); |
9082 | 1553 } |
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|
1554 resolve_handle_call(result, resolved_klass, method_name, method_signature, current_klass, CHECK); |
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1555 } |
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1556 |
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1557 void LinkResolver::resolve_handle_call(CallInfo& result, KlassHandle resolved_klass, |
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1558 Symbol* method_name, Symbol* method_signature, |
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|
1559 KlassHandle current_klass, |
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|
1560 TRAPS) { |
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|
1561 // JSR 292: this must be an implicitly generated method MethodHandle.invokeExact(*...) or similar |
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1562 assert(resolved_klass() == SystemDictionary::MethodHandle_klass(), ""); |
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1563 assert(MethodHandles::is_signature_polymorphic_name(method_name), ""); |
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1564 methodHandle resolved_method; |
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1565 Handle resolved_appendix; |
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1566 Handle resolved_method_type; |
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1567 lookup_polymorphic_method(resolved_method, resolved_klass, |
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1568 method_name, method_signature, |
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1569 current_klass, &resolved_appendix, &resolved_method_type, CHECK); |
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1570 result.set_handle(resolved_method, resolved_appendix, resolved_method_type, CHECK); |
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1571 } |
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|
1572 |
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1573 |
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|
1574 void LinkResolver::resolve_invokedynamic(CallInfo& result, constantPoolHandle pool, int index, TRAPS) { |
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1575 assert(EnableInvokeDynamic, ""); |
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1576 |
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1577 //resolve_pool(<resolved_klass>, method_name, method_signature, current_klass, pool, index, CHECK); |
6266
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1578 Symbol* method_name = pool->name_ref_at(index); |
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1579 Symbol* method_signature = pool->signature_ref_at(index); |
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1580 KlassHandle current_klass = KlassHandle(THREAD, pool->pool_holder()); |
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1581 |
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1582 // Resolve the bootstrap specifier (BSM + optional arguments). |
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1583 Handle bootstrap_specifier; |
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|
1584 // Check if CallSite has been bound already: |
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1585 ConstantPoolCacheEntry* cpce = pool->invokedynamic_cp_cache_entry_at(index); |
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1586 if (cpce->is_f1_null()) { |
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1587 int pool_index = cpce->constant_pool_index(); |
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1588 oop bsm_info = pool->resolve_bootstrap_specifier_at(pool_index, CHECK); |
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1589 assert(bsm_info != NULL, ""); |
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1590 // FIXME: Cache this once per BootstrapMethods entry, not once per CONSTANT_InvokeDynamic. |
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1591 bootstrap_specifier = Handle(THREAD, bsm_info); |
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1592 } |
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1593 if (!cpce->is_f1_null()) { |
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1594 methodHandle method( THREAD, cpce->f1_as_method()); |
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1595 Handle appendix( THREAD, cpce->appendix_if_resolved(pool)); |
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1596 Handle method_type(THREAD, cpce->method_type_if_resolved(pool)); |
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1597 result.set_handle(method, appendix, method_type, CHECK); |
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1598 return; |
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|
1599 } |
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|
1600 |
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1601 if (TraceMethodHandles) { |
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1602 ResourceMark rm(THREAD); |
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1603 tty->print_cr("resolve_invokedynamic #%d %s %s", |
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|
1604 ConstantPool::decode_invokedynamic_index(index), |
6266
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1605 method_name->as_C_string(), method_signature->as_C_string()); |
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1606 tty->print(" BSM info: "); bootstrap_specifier->print(); |
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|
1607 } |
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|
1608 |
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|
1609 resolve_dynamic_call(result, bootstrap_specifier, method_name, method_signature, current_klass, CHECK); |
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|
1610 } |
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|
1611 |
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|
1612 void LinkResolver::resolve_dynamic_call(CallInfo& result, |
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|
1613 Handle bootstrap_specifier, |
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|
1614 Symbol* method_name, Symbol* method_signature, |
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|
1615 KlassHandle current_klass, |
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|
1616 TRAPS) { |
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|
1617 // JSR 292: this must resolve to an implicitly generated method MH.linkToCallSite(*...) |
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|
1618 // The appendix argument is likely to be a freshly-created CallSite. |
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|
1619 Handle resolved_appendix; |
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1620 Handle resolved_method_type; |
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|
1621 methodHandle resolved_method = |
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|
1622 SystemDictionary::find_dynamic_call_site_invoker(current_klass, |
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|
1623 bootstrap_specifier, |
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|
1624 method_name, method_signature, |
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|
1625 &resolved_appendix, |
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|
1626 &resolved_method_type, |
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|
1627 THREAD); |
3417
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|
1628 if (HAS_PENDING_EXCEPTION) { |
6266
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|
1629 if (TraceMethodHandles) { |
12316
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7195622: CheckUnhandledOops has limited usefulness now
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12264
diff
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|
1630 tty->print_cr("invokedynamic throws BSME for "INTPTR_FORMAT, (void *)PENDING_EXCEPTION); |
6266
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|
1631 PENDING_EXCEPTION->print(); |
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|
1632 } |
3417
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|
1633 if (PENDING_EXCEPTION->is_a(SystemDictionary::BootstrapMethodError_klass())) { |
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|
1634 // throw these guys, since they are already wrapped |
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|
1635 return; |
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|
1636 } |
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|
1637 if (!PENDING_EXCEPTION->is_a(SystemDictionary::LinkageError_klass())) { |
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|
1638 // intercept only LinkageErrors which might have failed to wrap |
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|
1639 return; |
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|
1640 } |
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|
1641 // See the "Linking Exceptions" section for the invokedynamic instruction in the JVMS. |
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|
1642 Handle nested_exception(THREAD, PENDING_EXCEPTION); |
3417
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|
1643 CLEAR_PENDING_EXCEPTION; |
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|
1644 THROW_CAUSE(vmSymbols::java_lang_BootstrapMethodError(), nested_exception) |
3417
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|
1645 } |
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|
1646 result.set_handle(resolved_method, resolved_appendix, resolved_method_type, CHECK); |
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|
1647 } |
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|
1648 |
0 | 1649 //------------------------------------------------------------------------------------------------------------------------ |
1650 #ifndef PRODUCT | |
1651 | |
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|
1652 void CallInfo::print() { |
0 | 1653 ResourceMark rm; |
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|
1654 const char* kindstr = "unknown"; |
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|
1655 switch (_call_kind) { |
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|
1656 case direct_call: kindstr = "direct"; break; |
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|
1657 case vtable_call: kindstr = "vtable"; break; |
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|
1658 case itable_call: kindstr = "itable"; break; |
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|
1659 } |
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|
1660 tty->print_cr("Call %s@%d %s", kindstr, _call_index, |
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|
1661 _resolved_method.is_null() ? "(none)" : _resolved_method->name_and_sig_as_C_string()); |
0 | 1662 } |
1663 | |
1664 #endif |