Mercurial > hg > truffle
annotate src/share/vm/interpreter/linkResolver.cpp @ 21211:6b11405f0279
Fix typo
author | Stefan Anzinger <stefan.anzinger@oracle.com> |
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date | Mon, 04 May 2015 08:49:06 +0200 |
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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"); | |
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116 if (!THREAD->can_call_java()) { |
0 | 117 // don't force compilation, resolve was on behalf of compiler |
118 return; | |
119 } | |
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120 if (selected_method->method_holder()->is_not_initialized()) { |
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121 // 'is_not_initialized' means not only '!is_initialized', but also that |
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122 // initialization has not been started yet ('!being_initialized') |
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123 // Do not force compilation of methods in uninitialized classes. |
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124 // Note that doing this would throw an assert later, |
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125 // in CompileBroker::compile_method. |
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126 // We sometimes use the link resolver to do reflective lookups |
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127 // even before classes are initialized. |
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128 return; |
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129 } |
0 | 130 CompileBroker::compile_method(selected_method, InvocationEntryBci, |
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131 CompilationPolicy::policy()->initial_compile_level(), |
1783 | 132 methodHandle(), 0, "must_be_compiled", CHECK); |
0 | 133 } |
134 } | |
135 | |
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136 // utility query for unreflecting a method |
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137 CallInfo::CallInfo(Method* resolved_method, Klass* resolved_klass) { |
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138 Klass* resolved_method_holder = resolved_method->method_holder(); |
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139 if (resolved_klass == NULL) { // 2nd argument defaults to holder of 1st |
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140 resolved_klass = resolved_method_holder; |
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141 } |
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142 _resolved_klass = resolved_klass; |
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143 _selected_klass = resolved_klass; |
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144 _resolved_method = resolved_method; |
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145 _selected_method = resolved_method; |
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146 // classify: |
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147 CallKind kind = CallInfo::unknown_kind; |
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148 int index = resolved_method->vtable_index(); |
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149 if (resolved_method->can_be_statically_bound()) { |
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150 kind = CallInfo::direct_call; |
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151 } else if (!resolved_method_holder->is_interface()) { |
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152 // Could be an Object method inherited into an interface, but still a vtable call. |
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153 kind = CallInfo::vtable_call; |
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154 } else if (!resolved_klass->is_interface()) { |
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155 // A default or miranda method. Compute the vtable index. |
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156 ResourceMark rm; |
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157 klassVtable* vt = InstanceKlass::cast(resolved_klass)->vtable(); |
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158 index = LinkResolver::vtable_index_of_interface_method(resolved_klass, |
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159 resolved_method); |
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160 assert(index >= 0 , "we should have valid vtable index at this point"); |
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161 |
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162 kind = CallInfo::vtable_call; |
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163 } else if (resolved_method->has_vtable_index()) { |
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164 // Can occur if an interface redeclares a method of Object. |
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165 |
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166 #ifdef ASSERT |
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167 // Ensure that this is really the case. |
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168 KlassHandle object_klass = SystemDictionary::Object_klass(); |
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169 Method * object_resolved_method = object_klass()->vtable()->method_at(index); |
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170 assert(object_resolved_method->name() == resolved_method->name(), |
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171 err_msg("Object and interface method names should match at vtable index %d, %s != %s", |
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172 index, object_resolved_method->name()->as_C_string(), resolved_method->name()->as_C_string())); |
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173 assert(object_resolved_method->signature() == resolved_method->signature(), |
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174 err_msg("Object and interface method signatures should match at vtable index %d, %s != %s", |
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175 index, object_resolved_method->signature()->as_C_string(), resolved_method->signature()->as_C_string())); |
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176 #endif // ASSERT |
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177 |
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178 kind = CallInfo::vtable_call; |
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179 } else { |
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180 // A regular interface call. |
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181 kind = CallInfo::itable_call; |
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182 index = resolved_method->itable_index(); |
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183 } |
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184 assert(index == Method::nonvirtual_vtable_index || index >= 0, err_msg("bad index %d", index)); |
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185 _call_kind = kind; |
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186 _call_index = index; |
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187 _resolved_appendix = Handle(); |
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188 DEBUG_ONLY(verify()); |
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189 } |
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190 |
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191 #ifdef ASSERT |
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192 void CallInfo::verify() { |
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193 switch (call_kind()) { // the meaning and allowed value of index depends on kind |
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194 case CallInfo::direct_call: |
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195 if (_call_index == Method::nonvirtual_vtable_index) break; |
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196 // else fall through to check vtable index: |
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197 case CallInfo::vtable_call: |
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198 assert(resolved_klass()->verify_vtable_index(_call_index), ""); |
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199 break; |
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200 case CallInfo::itable_call: |
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201 assert(resolved_method()->method_holder()->verify_itable_index(_call_index), ""); |
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202 break; |
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203 case CallInfo::unknown_kind: |
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204 assert(call_kind() != CallInfo::unknown_kind, "CallInfo must be set"); |
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205 break; |
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206 default: |
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207 fatal(err_msg_res("Unexpected call kind %d", call_kind())); |
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208 } |
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209 } |
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210 #endif //ASSERT |
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211 |
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212 |
0 | 213 |
214 //------------------------------------------------------------------------------------------------------------------------ | |
215 // Klass resolution | |
216 | |
217 void LinkResolver::check_klass_accessability(KlassHandle ref_klass, KlassHandle sel_klass, TRAPS) { | |
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218 if (!Reflection::verify_class_access(ref_klass(), |
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219 sel_klass(), |
0 | 220 true)) { |
221 ResourceMark rm(THREAD); | |
222 Exceptions::fthrow( | |
223 THREAD_AND_LOCATION, | |
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224 vmSymbols::java_lang_IllegalAccessError(), |
0 | 225 "tried to access class %s from class %s", |
226 sel_klass->external_name(), | |
227 ref_klass->external_name() | |
228 ); | |
229 return; | |
230 } | |
231 } | |
232 | |
233 void LinkResolver::resolve_klass(KlassHandle& result, constantPoolHandle pool, int index, TRAPS) { | |
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234 Klass* result_oop = pool->klass_ref_at(index, CHECK); |
0 | 235 result = KlassHandle(THREAD, result_oop); |
236 } | |
237 | |
238 //------------------------------------------------------------------------------------------------------------------------ | |
239 // Method resolution | |
240 // | |
241 // According to JVM spec. $5.4.3c & $5.4.3d | |
242 | |
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243 // Look up method in klasses, including static methods |
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244 // Then look up local default methods |
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245 void LinkResolver::lookup_method_in_klasses(methodHandle& result, KlassHandle klass, Symbol* name, Symbol* signature, bool checkpolymorphism, bool in_imethod_resolve, TRAPS) { |
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246 // Ignore overpasses so statics can be found during resolution |
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247 Method* result_oop = klass->uncached_lookup_method(name, signature, Klass::skip_overpass); |
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248 |
18046 | 249 if (klass->oop_is_array()) { |
250 // Only consider klass and super klass for arrays | |
251 result = methodHandle(THREAD, result_oop); | |
252 return; | |
253 } | |
254 | |
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255 // JDK 8, JVMS 5.4.3.4: Interface method resolution should |
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256 // ignore static and non-public methods of java.lang.Object, |
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257 // like clone, finalize, registerNatives. |
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258 if (in_imethod_resolve && |
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259 result_oop != NULL && |
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260 klass->is_interface() && |
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261 (result_oop->is_static() || !result_oop->is_public()) && |
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262 result_oop->method_holder() == SystemDictionary::Object_klass()) { |
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263 result_oop = NULL; |
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264 } |
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265 |
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266 // Before considering default methods, check for an overpass in the |
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267 // current class if a method has not been found. |
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268 if (result_oop == NULL) { |
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269 result_oop = InstanceKlass::cast(klass())->find_method(name, signature); |
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270 } |
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271 |
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272 if (result_oop == NULL) { |
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273 Array<Method*>* default_methods = InstanceKlass::cast(klass())->default_methods(); |
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274 if (default_methods != NULL) { |
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275 result_oop = InstanceKlass::find_method(default_methods, name, signature); |
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276 } |
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277 } |
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278 |
13413 | 279 if (checkpolymorphism && EnableInvokeDynamic && result_oop != NULL) { |
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280 vmIntrinsics::ID iid = result_oop->intrinsic_id(); |
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281 if (MethodHandles::is_signature_polymorphic(iid)) { |
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282 // Do not link directly to these. The VM must produce a synthetic one using lookup_polymorphic_method. |
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283 return; |
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284 } |
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285 } |
0 | 286 result = methodHandle(THREAD, result_oop); |
287 } | |
288 | |
289 // returns first instance method | |
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290 // Looks up method in classes, then looks up local default methods |
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291 void LinkResolver::lookup_instance_method_in_klasses(methodHandle& result, KlassHandle klass, Symbol* name, Symbol* signature, TRAPS) { |
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292 Method* result_oop = klass->uncached_lookup_method(name, signature, Klass::normal); |
0 | 293 result = methodHandle(THREAD, result_oop); |
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294 while (!result.is_null() && result->is_static() && result->method_holder()->super() != NULL) { |
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295 KlassHandle super_klass = KlassHandle(THREAD, result->method_holder()->super()); |
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296 result = methodHandle(THREAD, super_klass->uncached_lookup_method(name, signature, Klass::normal)); |
0 | 297 } |
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298 |
18046 | 299 if (klass->oop_is_array()) { |
300 // Only consider klass and super klass for arrays | |
301 return; | |
302 } | |
303 | |
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304 if (result.is_null()) { |
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305 Array<Method*>* default_methods = InstanceKlass::cast(klass())->default_methods(); |
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306 if (default_methods != NULL) { |
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307 result = methodHandle(InstanceKlass::find_method(default_methods, name, signature)); |
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308 assert(result.is_null() || !result->is_static(), "static defaults not allowed"); |
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309 } |
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310 } |
0 | 311 } |
312 | |
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313 int LinkResolver::vtable_index_of_interface_method(KlassHandle klass, |
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314 methodHandle resolved_method) { |
0 | 315 |
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316 int vtable_index = Method::invalid_vtable_index; |
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317 Symbol* name = resolved_method->name(); |
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318 Symbol* signature = resolved_method->signature(); |
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319 |
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320 // First check in default method array |
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321 if (!resolved_method->is_abstract() && |
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322 (InstanceKlass::cast(klass())->default_methods() != NULL)) { |
20785 | 323 int index = InstanceKlass::find_method_index(InstanceKlass::cast(klass())->default_methods(), name, signature, false, false); |
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324 if (index >= 0 ) { |
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325 vtable_index = InstanceKlass::cast(klass())->default_vtable_indices()->at(index); |
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326 } |
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327 } |
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328 if (vtable_index == Method::invalid_vtable_index) { |
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329 // get vtable_index for miranda methods |
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330 ResourceMark rm; |
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331 klassVtable *vt = InstanceKlass::cast(klass())->vtable(); |
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332 vtable_index = vt->index_of_miranda(name, signature); |
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333 } |
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334 return vtable_index; |
0 | 335 } |
336 | |
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337 void LinkResolver::lookup_method_in_interfaces(methodHandle& result, KlassHandle klass, Symbol* name, Symbol* signature, TRAPS) { |
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338 InstanceKlass *ik = InstanceKlass::cast(klass()); |
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339 |
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340 // Specify 'true' in order to skip default methods when searching the |
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341 // interfaces. Function lookup_method_in_klasses() already looked for |
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342 // the method in the default methods table. |
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343 result = methodHandle(THREAD, ik->lookup_method_in_all_interfaces(name, signature, Klass::skip_defaults)); |
0 | 344 } |
345 | |
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346 void LinkResolver::lookup_polymorphic_method(methodHandle& result, |
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347 KlassHandle klass, Symbol* name, Symbol* full_signature, |
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348 KlassHandle current_klass, |
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349 Handle *appendix_result_or_null, |
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350 Handle *method_type_result, |
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351 TRAPS) { |
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352 vmIntrinsics::ID iid = MethodHandles::signature_polymorphic_name_id(name); |
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353 if (TraceMethodHandles) { |
9082 | 354 ResourceMark rm(THREAD); |
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355 tty->print_cr("lookup_polymorphic_method iid=%s %s.%s%s", |
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356 vmIntrinsics::name_at(iid), klass->external_name(), |
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357 name->as_C_string(), full_signature->as_C_string()); |
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358 } |
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359 if (EnableInvokeDynamic && |
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360 klass() == SystemDictionary::MethodHandle_klass() && |
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361 iid != vmIntrinsics::_none) { |
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362 if (MethodHandles::is_signature_polymorphic_intrinsic(iid)) { |
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363 // Most of these do not need an up-call to Java to resolve, so can be done anywhere. |
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364 // Do not erase last argument type (MemberName) if it is a static linkTo method. |
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365 bool keep_last_arg = MethodHandles::is_signature_polymorphic_static(iid); |
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366 TempNewSymbol basic_signature = |
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367 MethodHandles::lookup_basic_type_signature(full_signature, keep_last_arg, CHECK); |
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368 if (TraceMethodHandles) { |
9082 | 369 ResourceMark rm(THREAD); |
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370 tty->print_cr("lookup_polymorphic_method %s %s => basic %s", |
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371 name->as_C_string(), |
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372 full_signature->as_C_string(), |
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373 basic_signature->as_C_string()); |
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374 } |
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375 result = SystemDictionary::find_method_handle_intrinsic(iid, |
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376 basic_signature, |
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377 CHECK); |
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378 if (result.not_null()) { |
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379 assert(result->is_method_handle_intrinsic(), "MH.invokeBasic or MH.linkTo* intrinsic"); |
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380 assert(result->intrinsic_id() != vmIntrinsics::_invokeGeneric, "wrong place to find this"); |
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381 assert(basic_signature == result->signature(), "predict the result signature"); |
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382 if (TraceMethodHandles) { |
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383 tty->print("lookup_polymorphic_method => intrinsic "); |
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384 result->print_on(tty); |
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385 } |
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386 return; |
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387 } |
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388 } else if (iid == vmIntrinsics::_invokeGeneric |
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389 && THREAD->can_call_java() |
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390 && appendix_result_or_null != NULL) { |
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391 // This is a method with type-checking semantics. |
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392 // We will ask Java code to spin an adapter method for it. |
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393 if (!MethodHandles::enabled()) { |
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394 // Make sure the Java part of the runtime has been booted up. |
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395 Klass* natives = SystemDictionary::MethodHandleNatives_klass(); |
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396 if (natives == NULL || InstanceKlass::cast(natives)->is_not_initialized()) { |
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397 SystemDictionary::resolve_or_fail(vmSymbols::java_lang_invoke_MethodHandleNatives(), |
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398 Handle(), |
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399 Handle(), |
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400 true, |
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401 CHECK); |
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402 } |
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403 } |
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404 |
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405 Handle appendix; |
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406 Handle method_type; |
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407 result = SystemDictionary::find_method_handle_invoker(name, |
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408 full_signature, |
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409 current_klass, |
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410 &appendix, |
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411 &method_type, |
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412 CHECK); |
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413 if (TraceMethodHandles) { |
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414 tty->print("lookup_polymorphic_method => (via Java) "); |
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415 result->print_on(tty); |
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416 tty->print(" lookup_polymorphic_method => appendix = "); |
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417 if (appendix.is_null()) tty->print_cr("(none)"); |
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418 else appendix->print_on(tty); |
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419 } |
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420 if (result.not_null()) { |
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421 #ifdef ASSERT |
9082 | 422 ResourceMark rm(THREAD); |
423 | |
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424 TempNewSymbol basic_signature = |
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425 MethodHandles::lookup_basic_type_signature(full_signature, CHECK); |
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426 int actual_size_of_params = result->size_of_parameters(); |
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427 int expected_size_of_params = ArgumentSizeComputer(basic_signature).size(); |
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428 // +1 for MethodHandle.this, +1 for trailing MethodType |
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429 if (!MethodHandles::is_signature_polymorphic_static(iid)) expected_size_of_params += 1; |
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430 if (appendix.not_null()) expected_size_of_params += 1; |
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431 if (actual_size_of_params != expected_size_of_params) { |
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432 tty->print_cr("*** basic_signature=%s", basic_signature->as_C_string()); |
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433 tty->print_cr("*** result for %s: ", vmIntrinsics::name_at(iid)); |
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434 result->print(); |
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435 } |
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436 assert(actual_size_of_params == expected_size_of_params, |
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437 err_msg("%d != %d", actual_size_of_params, expected_size_of_params)); |
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438 #endif //ASSERT |
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439 |
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440 assert(appendix_result_or_null != NULL, ""); |
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441 (*appendix_result_or_null) = appendix; |
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442 (*method_type_result) = method_type; |
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443 return; |
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444 } |
710 | 445 } |
446 } | |
447 } | |
448 | |
0 | 449 void LinkResolver::check_method_accessability(KlassHandle ref_klass, |
450 KlassHandle resolved_klass, | |
451 KlassHandle sel_klass, | |
452 methodHandle sel_method, | |
453 TRAPS) { | |
454 | |
455 AccessFlags flags = sel_method->access_flags(); | |
456 | |
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457 // Special case: arrays always override "clone". JVMS 2.15. |
0 | 458 // If the resolved klass is an array class, and the declaring class |
459 // is java.lang.Object and the method is "clone", set the flags | |
460 // to public. | |
461 // | |
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462 // We'll check for the method name first, as that's most likely |
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463 // to be false (so we'll short-circuit out of these tests). |
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464 if (sel_method->name() == vmSymbols::clone_name() && |
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465 sel_klass() == SystemDictionary::Object_klass() && |
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466 resolved_klass->oop_is_array()) { |
0 | 467 // We need to change "protected" to "public". |
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468 assert(flags.is_protected(), "clone not protected?"); |
0 | 469 jint new_flags = flags.as_int(); |
470 new_flags = new_flags & (~JVM_ACC_PROTECTED); | |
471 new_flags = new_flags | JVM_ACC_PUBLIC; | |
472 flags.set_flags(new_flags); | |
473 } | |
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474 // assert(extra_arg_result_or_null != NULL, "must be able to return extra argument"); |
0 | 475 |
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476 if (!Reflection::verify_field_access(ref_klass(), |
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477 resolved_klass(), |
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478 sel_klass(), |
0 | 479 flags, |
480 true)) { | |
481 ResourceMark rm(THREAD); | |
482 Exceptions::fthrow( | |
483 THREAD_AND_LOCATION, | |
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484 vmSymbols::java_lang_IllegalAccessError(), |
0 | 485 "tried to access method %s.%s%s from class %s", |
486 sel_klass->external_name(), | |
487 sel_method->name()->as_C_string(), | |
488 sel_method->signature()->as_C_string(), | |
489 ref_klass->external_name() | |
490 ); | |
491 return; | |
492 } | |
493 } | |
494 | |
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495 void LinkResolver::resolve_method_statically(methodHandle& resolved_method, KlassHandle& resolved_klass, |
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496 Bytecodes::Code code, constantPoolHandle pool, int index, TRAPS) { |
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497 // This method is used only |
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498 // (1) in C2 from InlineTree::ok_to_inline (via ciMethod::check_call), |
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499 // and |
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500 // (2) in Bytecode_invoke::static_target |
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501 // It appears to fail when applied to an invokeinterface call site. |
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502 // FIXME: Remove this method and ciMethod::check_call; refactor to use the other LinkResolver entry points. |
0 | 503 // resolve klass |
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504 if (code == Bytecodes::_invokedynamic) { |
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505 resolved_klass = SystemDictionary::MethodHandle_klass(); |
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506 Symbol* method_name = vmSymbols::invoke_name(); |
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507 Symbol* method_signature = pool->signature_ref_at(index); |
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508 KlassHandle current_klass(THREAD, pool->pool_holder()); |
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509 resolve_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, true, false, CHECK); |
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510 return; |
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511 } |
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512 |
0 | 513 resolve_klass(resolved_klass, pool, index, CHECK); |
514 | |
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515 Symbol* method_name = pool->name_ref_at(index); |
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516 Symbol* method_signature = pool->signature_ref_at(index); |
0 | 517 KlassHandle current_klass(THREAD, pool->pool_holder()); |
518 | |
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519 if (pool->has_preresolution() |
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520 || (resolved_klass() == SystemDictionary::MethodHandle_klass() && |
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521 MethodHandles::is_signature_polymorphic_name(resolved_klass(), method_name))) { |
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522 Method* result_oop = ConstantPool::method_at_if_loaded(pool, index); |
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523 if (result_oop != NULL) { |
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524 resolved_method = methodHandle(THREAD, result_oop); |
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525 return; |
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526 } |
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527 } |
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528 |
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529 if (code == Bytecodes::_invokeinterface) { |
13413 | 530 resolve_interface_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, true, true, CHECK); |
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531 } else if (code == Bytecodes::_invokevirtual) { |
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532 resolve_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, true, true, CHECK); |
13413 | 533 } else if (!resolved_klass->is_interface()) { |
534 resolve_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, true, false, CHECK); | |
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535 } else { |
13413 | 536 bool nostatics = (code == Bytecodes::_invokestatic) ? false : true; |
537 resolve_interface_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, true, nostatics, CHECK); | |
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538 } |
0 | 539 } |
540 | |
541 void LinkResolver::resolve_method(methodHandle& resolved_method, KlassHandle resolved_klass, | |
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542 Symbol* method_name, Symbol* method_signature, |
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543 KlassHandle current_klass, bool check_access, |
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544 bool require_methodref, TRAPS) { |
0 | 545 |
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546 Handle nested_exception; |
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547 |
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548 // 1. check if methodref required, that resolved_klass is not interfacemethodref |
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549 if (require_methodref && resolved_klass->is_interface()) { |
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550 ResourceMark rm(THREAD); |
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551 char buf[200]; |
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552 jio_snprintf(buf, sizeof(buf), "Found interface %s, but class was expected", |
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553 resolved_klass()->external_name()); |
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554 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); |
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555 } |
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556 |
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557 // 2. lookup method in resolved klass and its super klasses |
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558 lookup_method_in_klasses(resolved_method, resolved_klass, method_name, method_signature, true, false, CHECK); |
0 | 559 |
18046 | 560 if (resolved_method.is_null() && !resolved_klass->oop_is_array()) { // not found in the class hierarchy |
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561 // 3. lookup method in all the interfaces implemented by the resolved klass |
0 | 562 lookup_method_in_interfaces(resolved_method, resolved_klass, method_name, method_signature, CHECK); |
563 | |
564 if (resolved_method.is_null()) { | |
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565 // JSR 292: see if this is an implicitly generated method MethodHandle.linkToVirtual(*...), etc |
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566 lookup_polymorphic_method(resolved_method, resolved_klass, method_name, method_signature, |
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567 current_klass, (Handle*)NULL, (Handle*)NULL, THREAD); |
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568 if (HAS_PENDING_EXCEPTION) { |
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569 nested_exception = Handle(THREAD, PENDING_EXCEPTION); |
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570 CLEAR_PENDING_EXCEPTION; |
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571 } |
710 | 572 } |
18046 | 573 } |
710 | 574 |
18046 | 575 if (resolved_method.is_null()) { |
576 // 4. method lookup failed | |
577 ResourceMark rm(THREAD); | |
578 THROW_MSG_CAUSE(vmSymbols::java_lang_NoSuchMethodError(), | |
579 Method::name_and_sig_as_C_string(resolved_klass(), | |
580 method_name, | |
581 method_signature), | |
582 nested_exception); | |
0 | 583 } |
584 | |
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585 // 5. access checks, access checking may be turned off when calling from within the VM. |
0 | 586 if (check_access) { |
587 assert(current_klass.not_null() , "current_klass should not be null"); | |
588 | |
589 // check if method can be accessed by the referring class | |
590 check_method_accessability(current_klass, | |
591 resolved_klass, | |
592 KlassHandle(THREAD, resolved_method->method_holder()), | |
593 resolved_method, | |
594 CHECK); | |
595 | |
596 // check loader constraints | |
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597 Handle loader (THREAD, InstanceKlass::cast(current_klass())->class_loader()); |
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598 Handle class_loader (THREAD, resolved_method->method_holder()->class_loader()); |
0 | 599 { |
600 ResourceMark rm(THREAD); | |
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601 Symbol* failed_type_symbol = |
0 | 602 SystemDictionary::check_signature_loaders(method_signature, loader, |
603 class_loader, true, CHECK); | |
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604 if (failed_type_symbol != NULL) { |
0 | 605 const char* msg = "loader constraint violation: when resolving method" |
606 " \"%s\" the class loader (instance of %s) of the current class, %s," | |
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607 " and the class loader (instance of %s) for the method's defining class, %s, have" |
0 | 608 " different Class objects for the type %s used in the signature"; |
6983 | 609 char* sig = Method::name_and_sig_as_C_string(resolved_klass(),method_name,method_signature); |
0 | 610 const char* loader1 = SystemDictionary::loader_name(loader()); |
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611 char* current = InstanceKlass::cast(current_klass())->name()->as_C_string(); |
0 | 612 const char* loader2 = SystemDictionary::loader_name(class_loader()); |
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613 char* target = InstanceKlass::cast(resolved_method->method_holder()) |
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614 ->name()->as_C_string(); |
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615 char* failed_type_name = failed_type_symbol->as_C_string(); |
0 | 616 size_t buflen = strlen(msg) + strlen(sig) + strlen(loader1) + |
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617 strlen(current) + strlen(loader2) + strlen(target) + |
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618 strlen(failed_type_name) + 1; |
0 | 619 char* buf = NEW_RESOURCE_ARRAY_IN_THREAD(THREAD, char, buflen); |
620 jio_snprintf(buf, buflen, msg, sig, loader1, current, loader2, | |
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621 target, failed_type_name); |
0 | 622 THROW_MSG(vmSymbols::java_lang_LinkageError(), buf); |
623 } | |
624 } | |
625 } | |
626 } | |
627 | |
628 void LinkResolver::resolve_interface_method(methodHandle& resolved_method, | |
629 KlassHandle resolved_klass, | |
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630 Symbol* method_name, |
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631 Symbol* method_signature, |
0 | 632 KlassHandle current_klass, |
13413 | 633 bool check_access, |
634 bool nostatics, TRAPS) { | |
0 | 635 |
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636 // check if klass is interface |
0 | 637 if (!resolved_klass->is_interface()) { |
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638 ResourceMark rm(THREAD); |
0 | 639 char buf[200]; |
6983 | 640 jio_snprintf(buf, sizeof(buf), "Found class %s, but interface was expected", resolved_klass()->external_name()); |
0 | 641 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); |
642 } | |
643 | |
644 // lookup method in this interface or its super, java.lang.Object | |
13413 | 645 // JDK8: also look for static methods |
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646 lookup_method_in_klasses(resolved_method, resolved_klass, method_name, method_signature, false, true, CHECK); |
0 | 647 |
18046 | 648 if (resolved_method.is_null() && !resolved_klass->oop_is_array()) { |
0 | 649 // lookup method in all the super-interfaces |
650 lookup_method_in_interfaces(resolved_method, resolved_klass, method_name, method_signature, CHECK); | |
18046 | 651 } |
652 | |
653 if (resolved_method.is_null()) { | |
654 // no method found | |
655 ResourceMark rm(THREAD); | |
656 THROW_MSG(vmSymbols::java_lang_NoSuchMethodError(), | |
657 Method::name_and_sig_as_C_string(resolved_klass(), | |
658 method_name, | |
659 method_signature)); | |
0 | 660 } |
661 | |
662 if (check_access) { | |
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663 // JDK8 adds non-public interface methods, and accessability check requirement |
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664 assert(current_klass.not_null() , "current_klass should not be null"); |
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665 |
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666 // check if method can be accessed by the referring class |
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667 check_method_accessability(current_klass, |
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668 resolved_klass, |
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669 KlassHandle(THREAD, resolved_method->method_holder()), |
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670 resolved_method, |
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671 CHECK); |
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672 |
0 | 673 HandleMark hm(THREAD); |
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674 Handle loader (THREAD, InstanceKlass::cast(current_klass())->class_loader()); |
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675 Handle class_loader (THREAD, resolved_method->method_holder()->class_loader()); |
0 | 676 { |
677 ResourceMark rm(THREAD); | |
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678 Symbol* failed_type_symbol = |
0 | 679 SystemDictionary::check_signature_loaders(method_signature, loader, |
680 class_loader, true, CHECK); | |
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681 if (failed_type_symbol != NULL) { |
0 | 682 const char* msg = "loader constraint violation: when resolving " |
683 "interface method \"%s\" the class loader (instance of %s) of the " | |
684 "current class, %s, and the class loader (instance of %s) for " | |
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685 "the method's defining class, %s, have different Class objects for the type %s " |
0 | 686 "used in the signature"; |
6983 | 687 char* sig = Method::name_and_sig_as_C_string(resolved_klass(),method_name,method_signature); |
0 | 688 const char* loader1 = SystemDictionary::loader_name(loader()); |
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689 char* current = InstanceKlass::cast(current_klass())->name()->as_C_string(); |
0 | 690 const char* loader2 = SystemDictionary::loader_name(class_loader()); |
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691 char* target = InstanceKlass::cast(resolved_method->method_holder()) |
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692 ->name()->as_C_string(); |
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693 char* failed_type_name = failed_type_symbol->as_C_string(); |
0 | 694 size_t buflen = strlen(msg) + strlen(sig) + strlen(loader1) + |
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695 strlen(current) + strlen(loader2) + strlen(target) + |
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696 strlen(failed_type_name) + 1; |
0 | 697 char* buf = NEW_RESOURCE_ARRAY_IN_THREAD(THREAD, char, buflen); |
698 jio_snprintf(buf, buflen, msg, sig, loader1, current, loader2, | |
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699 target, failed_type_name); |
0 | 700 THROW_MSG(vmSymbols::java_lang_LinkageError(), buf); |
701 } | |
702 } | |
703 } | |
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704 |
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705 if (nostatics && resolved_method->is_static()) { |
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706 ResourceMark rm(THREAD); |
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707 char buf[200]; |
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708 jio_snprintf(buf, sizeof(buf), "Expected instance not static method %s", |
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709 Method::name_and_sig_as_C_string(resolved_klass(), |
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710 resolved_method->name(), resolved_method->signature())); |
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711 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); |
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712 } |
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713 |
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714 if (TraceItables && Verbose) { |
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715 ResourceMark rm(THREAD); |
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716 tty->print("invokeinterface resolved method: caller-class:%s, compile-time-class:%s, method:%s, method_holder:%s, access_flags: ", |
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717 (current_klass.is_null() ? "<NULL>" : current_klass->internal_name()), |
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718 (resolved_klass.is_null() ? "<NULL>" : resolved_klass->internal_name()), |
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719 Method::name_and_sig_as_C_string(resolved_klass(), |
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720 resolved_method->name(), |
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721 resolved_method->signature()), |
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722 resolved_method->method_holder()->internal_name() |
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723 ); |
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724 resolved_method->access_flags().print_on(tty); |
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725 if (resolved_method->is_default_method()) { |
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726 tty->print("default "); |
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727 } |
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728 if (resolved_method->is_overpass()) { |
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729 tty->print("overpass"); |
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730 } |
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731 tty->cr(); |
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732 } |
0 | 733 } |
734 | |
735 //------------------------------------------------------------------------------------------------------------------------ | |
736 // Field resolution | |
737 | |
738 void LinkResolver::check_field_accessability(KlassHandle ref_klass, | |
739 KlassHandle resolved_klass, | |
740 KlassHandle sel_klass, | |
741 fieldDescriptor& fd, | |
742 TRAPS) { | |
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743 if (!Reflection::verify_field_access(ref_klass(), |
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744 resolved_klass(), |
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745 sel_klass(), |
0 | 746 fd.access_flags(), |
747 true)) { | |
748 ResourceMark rm(THREAD); | |
749 Exceptions::fthrow( | |
750 THREAD_AND_LOCATION, | |
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751 vmSymbols::java_lang_IllegalAccessError(), |
0 | 752 "tried to access field %s.%s from class %s", |
753 sel_klass->external_name(), | |
754 fd.name()->as_C_string(), | |
755 ref_klass->external_name() | |
756 ); | |
757 return; | |
758 } | |
759 } | |
760 | |
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761 void LinkResolver::resolve_field_access(fieldDescriptor& result, constantPoolHandle pool, int index, Bytecodes::Code byte, TRAPS) { |
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762 resolve_field_access(result, pool, index, byte, true, true, THREAD); |
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763 } |
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764 |
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765 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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766 // Load these early in case the resolve of the containing klass fails |
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767 Symbol* field = pool->name_ref_at(index); |
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768 Symbol* sig = pool->signature_ref_at(index); |
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769 |
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770 // resolve specified klass |
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771 KlassHandle resolved_klass; |
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772 resolve_klass(resolved_klass, pool, index, CHECK); |
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773 |
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774 KlassHandle current_klass(THREAD, pool->pool_holder()); |
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775 resolve_field(result, resolved_klass, field, sig, current_klass, byte, check_access, initialize_class, CHECK); |
0 | 776 } |
777 | |
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778 void LinkResolver::resolve_field(fieldDescriptor& fd, KlassHandle resolved_klass, Symbol* field, Symbol* sig, |
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779 KlassHandle current_klass, Bytecodes::Code byte, bool check_access, bool initialize_class, |
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780 TRAPS) { |
0 | 781 assert(byte == Bytecodes::_getstatic || byte == Bytecodes::_putstatic || |
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782 byte == Bytecodes::_getfield || byte == Bytecodes::_putfield || |
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783 (byte == Bytecodes::_nop && !check_access), "bad field access bytecode"); |
0 | 784 |
785 bool is_static = (byte == Bytecodes::_getstatic || byte == Bytecodes::_putstatic); | |
786 bool is_put = (byte == Bytecodes::_putfield || byte == Bytecodes::_putstatic); | |
787 | |
788 // Check if there's a resolved klass containing the field | |
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789 if (resolved_klass.is_null()) { |
0 | 790 ResourceMark rm(THREAD); |
791 THROW_MSG(vmSymbols::java_lang_NoSuchFieldError(), field->as_C_string()); | |
792 } | |
793 | |
794 // Resolve instance field | |
18046 | 795 KlassHandle sel_klass(THREAD, resolved_klass->find_field(field, sig, &fd)); |
0 | 796 // check if field exists; i.e., if a klass containing the field def has been selected |
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797 if (sel_klass.is_null()) { |
0 | 798 ResourceMark rm(THREAD); |
799 THROW_MSG(vmSymbols::java_lang_NoSuchFieldError(), field->as_C_string()); | |
800 } | |
801 | |
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802 if (!check_access) |
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803 // Access checking may be turned off when calling from within the VM. |
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804 return; |
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805 |
0 | 806 // check access |
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807 check_field_accessability(current_klass, resolved_klass, sel_klass, fd, CHECK); |
0 | 808 |
809 // check for errors | |
810 if (is_static != fd.is_static()) { | |
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811 ResourceMark rm(THREAD); |
0 | 812 char msg[200]; |
6983 | 813 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 | 814 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), msg); |
815 } | |
816 | |
817 // Final fields can only be accessed from its own class. | |
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818 if (is_put && fd.access_flags().is_final() && sel_klass() != current_klass()) { |
0 | 819 THROW(vmSymbols::java_lang_IllegalAccessError()); |
820 } | |
821 | |
822 // initialize resolved_klass if necessary | |
823 // note 1: the klass which declared the field must be initialized (i.e, sel_klass) | |
824 // according to the newest JVM spec (5.5, p.170) - was bug (gri 7/28/99) | |
825 // | |
826 // note 2: we don't want to force initialization if we are just checking | |
827 // if the field access is legal; e.g., during compilation | |
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828 if (is_static && initialize_class) { |
0 | 829 sel_klass->initialize(CHECK); |
830 } | |
831 | |
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832 if (sel_klass() != current_klass()) { |
0 | 833 HandleMark hm(THREAD); |
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834 Handle ref_loader (THREAD, InstanceKlass::cast(current_klass())->class_loader()); |
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835 Handle sel_loader (THREAD, InstanceKlass::cast(sel_klass())->class_loader()); |
0 | 836 { |
837 ResourceMark rm(THREAD); | |
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838 Symbol* failed_type_symbol = |
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839 SystemDictionary::check_signature_loaders(sig, |
0 | 840 ref_loader, sel_loader, |
841 false, | |
842 CHECK); | |
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843 if (failed_type_symbol != NULL) { |
0 | 844 const char* msg = "loader constraint violation: when resolving field" |
845 " \"%s\" the class loader (instance of %s) of the referring class, " | |
846 "%s, and the class loader (instance of %s) for the field's resolved " | |
847 "type, %s, have different Class objects for that type"; | |
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848 char* field_name = field->as_C_string(); |
0 | 849 const char* loader1 = SystemDictionary::loader_name(ref_loader()); |
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850 char* sel = InstanceKlass::cast(sel_klass())->name()->as_C_string(); |
0 | 851 const char* loader2 = SystemDictionary::loader_name(sel_loader()); |
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852 char* failed_type_name = failed_type_symbol->as_C_string(); |
0 | 853 size_t buflen = strlen(msg) + strlen(field_name) + strlen(loader1) + |
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854 strlen(sel) + strlen(loader2) + strlen(failed_type_name) + 1; |
0 | 855 char* buf = NEW_RESOURCE_ARRAY_IN_THREAD(THREAD, char, buflen); |
856 jio_snprintf(buf, buflen, msg, field_name, loader1, sel, loader2, | |
857 failed_type_name); | |
858 THROW_MSG(vmSymbols::java_lang_LinkageError(), buf); | |
859 } | |
860 } | |
861 } | |
862 | |
863 // return information. note that the klass is set to the actual klass containing the | |
864 // field, otherwise access of static fields in superclasses will not work. | |
865 } | |
866 | |
867 | |
868 //------------------------------------------------------------------------------------------------------------------------ | |
869 // Invoke resolution | |
870 // | |
871 // Naming conventions: | |
872 // | |
873 // resolved_method the specified method (i.e., static receiver specified via constant pool index) | |
874 // sel_method the selected method (selected via run-time lookup; e.g., based on dynamic receiver class) | |
875 // resolved_klass the specified klass (i.e., specified via constant pool index) | |
876 // recv_klass the receiver klass | |
877 | |
878 | |
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879 void LinkResolver::resolve_static_call(CallInfo& result, KlassHandle& resolved_klass, Symbol* method_name, |
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880 Symbol* method_signature, KlassHandle current_klass, |
0 | 881 bool check_access, bool initialize_class, TRAPS) { |
882 methodHandle resolved_method; | |
883 linktime_resolve_static_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK); | |
6983 | 884 resolved_klass = KlassHandle(THREAD, resolved_method->method_holder()); |
0 | 885 |
886 // Initialize klass (this should only happen if everything is ok) | |
887 if (initialize_class && resolved_klass->should_be_initialized()) { | |
888 resolved_klass->initialize(CHECK); | |
889 linktime_resolve_static_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK); | |
890 } | |
891 | |
892 // setup result | |
893 result.set_static(resolved_klass, resolved_method, CHECK); | |
894 } | |
895 | |
896 // throws linktime exceptions | |
897 void LinkResolver::linktime_resolve_static_method(methodHandle& resolved_method, KlassHandle resolved_klass, | |
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898 Symbol* method_name, Symbol* method_signature, |
0 | 899 KlassHandle current_klass, bool check_access, TRAPS) { |
900 | |
13413 | 901 if (!resolved_klass->is_interface()) { |
902 resolve_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, false, CHECK); | |
903 } else { | |
904 resolve_interface_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, false, CHECK); | |
905 } | |
0 | 906 assert(resolved_method->name() != vmSymbols::class_initializer_name(), "should have been checked in verifier"); |
907 | |
908 // check if static | |
909 if (!resolved_method->is_static()) { | |
3324
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910 ResourceMark rm(THREAD); |
0 | 911 char buf[200]; |
6983 | 912 jio_snprintf(buf, sizeof(buf), "Expected static method %s", Method::name_and_sig_as_C_string(resolved_klass(), |
0 | 913 resolved_method->name(), |
914 resolved_method->signature())); | |
915 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); | |
916 } | |
917 } | |
918 | |
919 | |
2177
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920 void LinkResolver::resolve_special_call(CallInfo& result, KlassHandle resolved_klass, Symbol* method_name, |
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921 Symbol* method_signature, KlassHandle current_klass, bool check_access, TRAPS) { |
0 | 922 methodHandle resolved_method; |
923 linktime_resolve_special_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK); | |
924 runtime_resolve_special_method(result, resolved_method, resolved_klass, current_klass, check_access, CHECK); | |
925 } | |
926 | |
927 // throws linktime exceptions | |
928 void LinkResolver::linktime_resolve_special_method(methodHandle& resolved_method, KlassHandle resolved_klass, | |
2177
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929 Symbol* method_name, Symbol* method_signature, |
0 | 930 KlassHandle current_klass, bool check_access, TRAPS) { |
931 | |
12318
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932 // Invokespecial is called for multiple special reasons: |
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933 // <init> |
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934 // local private method invocation, for classes and interfaces |
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935 // superclass.method, which can also resolve to a default method |
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936 // and the selected method is recalculated relative to the direct superclass |
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937 // superinterface.method, which explicitly does not check shadowing |
6934 | 938 |
13413 | 939 if (!resolved_klass->is_interface()) { |
940 resolve_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, false, CHECK); | |
941 } else { | |
942 resolve_interface_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, true, CHECK); | |
943 } | |
0 | 944 |
945 // check if method name is <init>, that it is found in same klass as static type | |
946 if (resolved_method->name() == vmSymbols::object_initializer_name() && | |
947 resolved_method->method_holder() != resolved_klass()) { | |
948 ResourceMark rm(THREAD); | |
949 Exceptions::fthrow( | |
950 THREAD_AND_LOCATION, | |
2177
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951 vmSymbols::java_lang_NoSuchMethodError(), |
0 | 952 "%s: method %s%s not found", |
953 resolved_klass->external_name(), | |
954 resolved_method->name()->as_C_string(), | |
955 resolved_method->signature()->as_C_string() | |
956 ); | |
957 return; | |
958 } | |
959 | |
13401
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960 // check if invokespecial's interface method reference is in an indirect superinterface |
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961 if (!current_klass.is_null() && resolved_klass->is_interface()) { |
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962 Klass *klass_to_check = !InstanceKlass::cast(current_klass())->is_anonymous() ? |
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963 current_klass() : |
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964 InstanceKlass::cast(current_klass())->host_klass(); |
13433
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965 // As of the fix for 4486457 we disable verification for all of the |
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966 // dynamically-generated bytecodes associated with the 1.4 |
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967 // reflection implementation, not just those associated with |
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968 // sun/reflect/SerializationConstructorAccessor. |
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969 bool is_reflect = JDK_Version::is_gte_jdk14x_version() && |
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970 UseNewReflection && |
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971 klass_to_check->is_subclass_of( |
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972 SystemDictionary::reflect_MagicAccessorImpl_klass()); |
13401
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973 |
13433
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974 if (!is_reflect && |
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975 !InstanceKlass::cast(klass_to_check)->is_same_or_direct_interface(resolved_klass())) { |
13401
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976 ResourceMark rm(THREAD); |
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|
977 char buf[200]; |
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978 jio_snprintf(buf, sizeof(buf), |
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979 "Interface method reference: %s, is in an indirect superinterface of %s", |
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980 Method::name_and_sig_as_C_string(resolved_klass(), |
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981 resolved_method->name(), |
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|
982 resolved_method->signature()), |
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|
983 current_klass->external_name()); |
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984 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); |
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985 } |
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|
986 } |
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|
987 |
0 | 988 // check if not static |
989 if (resolved_method->is_static()) { | |
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990 ResourceMark rm(THREAD); |
0 | 991 char buf[200]; |
992 jio_snprintf(buf, sizeof(buf), | |
993 "Expecting non-static method %s", | |
6983 | 994 Method::name_and_sig_as_C_string(resolved_klass(), |
0 | 995 resolved_method->name(), |
996 resolved_method->signature())); | |
997 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); | |
998 } | |
12823
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999 |
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1000 if (TraceItables && Verbose) { |
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1001 ResourceMark rm(THREAD); |
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1002 tty->print("invokespecial resolved method: caller-class:%s, compile-time-class:%s, method:%s, method_holder:%s, access_flags: ", |
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1003 (current_klass.is_null() ? "<NULL>" : current_klass->internal_name()), |
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1004 (resolved_klass.is_null() ? "<NULL>" : resolved_klass->internal_name()), |
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1005 Method::name_and_sig_as_C_string(resolved_klass(), |
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1006 resolved_method->name(), |
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1007 resolved_method->signature()), |
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1008 resolved_method->method_holder()->internal_name() |
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|
1009 ); |
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1010 resolved_method->access_flags().print_on(tty); |
12823
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1011 if (resolved_method->is_default_method()) { |
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|
1012 tty->print("default "); |
12318
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1013 } |
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1014 if (resolved_method->is_overpass()) { |
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1015 tty->print("overpass"); |
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|
1016 } |
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|
1017 tty->cr(); |
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|
1018 } |
0 | 1019 } |
1020 | |
1021 // throws runtime exceptions | |
1022 void LinkResolver::runtime_resolve_special_method(CallInfo& result, methodHandle resolved_method, KlassHandle resolved_klass, | |
1023 KlassHandle current_klass, bool check_access, TRAPS) { | |
1024 | |
1025 // resolved method is selected method unless we have an old-style lookup | |
12318
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1026 // for a superclass method |
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1027 // Invokespecial for a superinterface, resolved method is selected method, |
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1028 // no checks for shadowing |
0 | 1029 methodHandle sel_method(THREAD, resolved_method()); |
1030 | |
1031 // check if this is an old-style super call and do a new lookup if so | |
1032 { KlassHandle method_klass = KlassHandle(THREAD, | |
1033 resolved_method->method_holder()); | |
1034 | |
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1035 if (check_access && |
0 | 1036 // a) check if ACC_SUPER flag is set for the current class |
8702 | 1037 (current_klass->is_super() || !AllowNonVirtualCalls) && |
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1038 // b) check if the class of the resolved_klass is a superclass |
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1039 // (not supertype in order to exclude interface classes) of the current class. |
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1040 // This check is not performed for super.invoke for interface methods |
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1041 // in super interfaces. |
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1042 current_klass->is_subclass_of(resolved_klass()) && |
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1043 current_klass() != resolved_klass() && |
0 | 1044 // c) check if the method is not <init> |
1045 resolved_method->name() != vmSymbols::object_initializer_name()) { | |
1046 // Lookup super method | |
1047 KlassHandle super_klass(THREAD, current_klass->super()); | |
1048 lookup_instance_method_in_klasses(sel_method, super_klass, | |
2177
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1049 resolved_method->name(), |
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|
1050 resolved_method->signature(), CHECK); |
0 | 1051 // check if found |
1052 if (sel_method.is_null()) { | |
1053 ResourceMark rm(THREAD); | |
1054 THROW_MSG(vmSymbols::java_lang_AbstractMethodError(), | |
6983 | 1055 Method::name_and_sig_as_C_string(resolved_klass(), |
0 | 1056 resolved_method->name(), |
1057 resolved_method->signature())); | |
1058 } | |
1059 } | |
1060 } | |
1061 | |
1062 // check if not static | |
1063 if (sel_method->is_static()) { | |
3324
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|
1064 ResourceMark rm(THREAD); |
0 | 1065 char buf[200]; |
6983 | 1066 jio_snprintf(buf, sizeof(buf), "Expecting non-static method %s", Method::name_and_sig_as_C_string(resolved_klass(), |
0 | 1067 resolved_method->name(), |
1068 resolved_method->signature())); | |
1069 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); | |
1070 } | |
1071 | |
1072 // check if abstract | |
1073 if (sel_method->is_abstract()) { | |
1074 ResourceMark rm(THREAD); | |
1075 THROW_MSG(vmSymbols::java_lang_AbstractMethodError(), | |
6983 | 1076 Method::name_and_sig_as_C_string(resolved_klass(), |
0 | 1077 sel_method->name(), |
1078 sel_method->signature())); | |
1079 } | |
1080 | |
12318
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1081 if (TraceItables && Verbose) { |
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1082 ResourceMark rm(THREAD); |
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1083 tty->print("invokespecial selected method: resolved-class:%s, method:%s, method_holder:%s, access_flags: ", |
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|
1084 (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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1085 Method::name_and_sig_as_C_string(resolved_klass(), |
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|
1086 sel_method->name(), |
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|
1087 sel_method->signature()), |
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1088 sel_method->method_holder()->internal_name() |
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|
1089 ); |
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|
1090 sel_method->access_flags().print_on(tty); |
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|
1091 if (sel_method->is_default_method()) { |
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1092 tty->print("default "); |
12318
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|
1093 } |
12823
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|
1094 if (sel_method->is_overpass()) { |
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|
1095 tty->print("overpass"); |
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|
1096 } |
12318
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|
1097 tty->cr(); |
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1098 } |
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1099 |
0 | 1100 // setup result |
1101 result.set_static(resolved_klass, sel_method, CHECK); | |
1102 } | |
1103 | |
1104 void LinkResolver::resolve_virtual_call(CallInfo& result, Handle recv, KlassHandle receiver_klass, KlassHandle resolved_klass, | |
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1105 Symbol* method_name, Symbol* method_signature, KlassHandle current_klass, |
0 | 1106 bool check_access, bool check_null_and_abstract, TRAPS) { |
1107 methodHandle resolved_method; | |
1108 linktime_resolve_virtual_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK); | |
1109 runtime_resolve_virtual_method(result, resolved_method, resolved_klass, recv, receiver_klass, check_null_and_abstract, CHECK); | |
1110 } | |
1111 | |
1112 // throws linktime exceptions | |
1113 void LinkResolver::linktime_resolve_virtual_method(methodHandle &resolved_method, KlassHandle resolved_klass, | |
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1114 Symbol* method_name, Symbol* method_signature, |
0 | 1115 KlassHandle current_klass, bool check_access, TRAPS) { |
1116 // normal method resolution | |
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1117 resolve_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, true, CHECK); |
0 | 1118 |
1119 assert(resolved_method->name() != vmSymbols::object_initializer_name(), "should have been checked in verifier"); | |
1120 assert(resolved_method->name() != vmSymbols::class_initializer_name (), "should have been checked in verifier"); | |
1121 | |
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1122 // check if private interface method |
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1123 if (resolved_klass->is_interface() && resolved_method->is_private()) { |
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1124 ResourceMark rm(THREAD); |
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1125 char buf[200]; |
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1126 jio_snprintf(buf, sizeof(buf), "private interface method requires invokespecial, not invokevirtual: method %s, caller-class:%s", |
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1127 Method::name_and_sig_as_C_string(resolved_klass(), |
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1128 resolved_method->name(), |
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1129 resolved_method->signature()), |
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1130 (current_klass.is_null() ? "<NULL>" : current_klass->internal_name())); |
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1131 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); |
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1132 } |
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1133 |
0 | 1134 // check if not static |
1135 if (resolved_method->is_static()) { | |
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1136 ResourceMark rm(THREAD); |
0 | 1137 char buf[200]; |
6983 | 1138 jio_snprintf(buf, sizeof(buf), "Expecting non-static method %s", Method::name_and_sig_as_C_string(resolved_klass(), |
0 | 1139 resolved_method->name(), |
1140 resolved_method->signature())); | |
1141 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); | |
1142 } | |
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1143 |
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1144 if (PrintVtables && Verbose) { |
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1145 ResourceMark rm(THREAD); |
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1146 tty->print("invokevirtual resolved method: caller-class:%s, compile-time-class:%s, method:%s, method_holder:%s, access_flags: ", |
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1147 (current_klass.is_null() ? "<NULL>" : current_klass->internal_name()), |
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1148 (resolved_klass.is_null() ? "<NULL>" : resolved_klass->internal_name()), |
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1149 Method::name_and_sig_as_C_string(resolved_klass(), |
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1150 resolved_method->name(), |
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1151 resolved_method->signature()), |
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1152 resolved_method->method_holder()->internal_name() |
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1153 ); |
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1154 resolved_method->access_flags().print_on(tty); |
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1155 if (resolved_method->is_default_method()) { |
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1156 tty->print("default "); |
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1157 } |
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1158 if (resolved_method->is_overpass()) { |
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1159 tty->print("overpass"); |
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|
1160 } |
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|
1161 tty->cr(); |
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1162 } |
0 | 1163 } |
1164 | |
1165 // throws runtime exceptions | |
1166 void LinkResolver::runtime_resolve_virtual_method(CallInfo& result, | |
1167 methodHandle resolved_method, | |
1168 KlassHandle resolved_klass, | |
1169 Handle recv, | |
1170 KlassHandle recv_klass, | |
1171 bool check_null_and_abstract, | |
1172 TRAPS) { | |
1173 | |
1174 // setup default return values | |
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1175 int vtable_index = Method::invalid_vtable_index; |
0 | 1176 methodHandle selected_method; |
1177 | |
1178 assert(recv.is_null() || recv->is_oop(), "receiver is not an oop"); | |
1179 | |
1180 // runtime method resolution | |
1181 if (check_null_and_abstract && recv.is_null()) { // check if receiver exists | |
1182 THROW(vmSymbols::java_lang_NullPointerException()); | |
1183 } | |
1184 | |
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1185 // Virtual methods cannot be resolved before its klass has been linked, for otherwise the Method*'s |
0 | 1186 // has not been rewritten, and the vtable initialized. Make sure to do this after the nullcheck, since |
1187 // a missing receiver might result in a bogus lookup. | |
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|
1188 assert(resolved_method->method_holder()->is_linked(), "must be linked"); |
0 | 1189 |
1190 // do lookup based on receiver klass using the vtable index | |
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1191 if (resolved_method->method_holder()->is_interface()) { // miranda method |
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1192 vtable_index = vtable_index_of_interface_method(resolved_klass, |
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1193 resolved_method); |
0 | 1194 assert(vtable_index >= 0 , "we should have valid vtable index at this point"); |
1195 | |
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1196 InstanceKlass* inst = InstanceKlass::cast(recv_klass()); |
0 | 1197 selected_method = methodHandle(THREAD, inst->method_at_vtable(vtable_index)); |
1198 } else { | |
1199 // at this point we are sure that resolved_method is virtual and not | |
1200 // a miranda method; therefore, it must have a valid vtable index. | |
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b2e698d2276c
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|
1201 assert(!resolved_method->has_itable_index(), ""); |
0 | 1202 vtable_index = resolved_method->vtable_index(); |
1203 // We could get a negative vtable_index for final methods, | |
1204 // because as an optimization they are they are never put in the vtable, | |
1205 // unless they override an existing method. | |
1206 // If we do get a negative, it means the resolved method is the the selected | |
1207 // method, and it can never be changed by an override. | |
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1208 if (vtable_index == Method::nonvirtual_vtable_index) { |
0 | 1209 assert(resolved_method->can_be_statically_bound(), "cannot override this method"); |
1210 selected_method = resolved_method; | |
1211 } else { | |
1212 // recv_klass might be an arrayKlassOop but all vtables start at | |
1213 // the same place. The cast is to avoid virtual call and assertion. | |
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1214 InstanceKlass* inst = (InstanceKlass*)recv_klass(); |
0 | 1215 selected_method = methodHandle(THREAD, inst->method_at_vtable(vtable_index)); |
1216 } | |
1217 } | |
1218 | |
1219 // check if method exists | |
1220 if (selected_method.is_null()) { | |
1221 ResourceMark rm(THREAD); | |
1222 THROW_MSG(vmSymbols::java_lang_AbstractMethodError(), | |
6983 | 1223 Method::name_and_sig_as_C_string(resolved_klass(), |
0 | 1224 resolved_method->name(), |
1225 resolved_method->signature())); | |
1226 } | |
1227 | |
1228 // check if abstract | |
1229 if (check_null_and_abstract && selected_method->is_abstract()) { | |
1230 ResourceMark rm(THREAD); | |
1231 THROW_MSG(vmSymbols::java_lang_AbstractMethodError(), | |
6983 | 1232 Method::name_and_sig_as_C_string(resolved_klass(), |
0 | 1233 selected_method->name(), |
1234 selected_method->signature())); | |
1235 } | |
1236 | |
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1237 if (PrintVtables && Verbose) { |
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|
1238 ResourceMark rm(THREAD); |
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1239 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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1240 (recv_klass.is_null() ? "<NULL>" : recv_klass->internal_name()), |
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|
1241 (resolved_klass.is_null() ? "<NULL>" : resolved_klass->internal_name()), |
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|
1242 Method::name_and_sig_as_C_string(resolved_klass(), |
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|
1243 resolved_method->name(), |
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|
1244 resolved_method->signature()), |
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1245 selected_method->method_holder()->internal_name(), |
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|
1246 vtable_index |
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|
1247 ); |
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8011311: Private interface methods. Default conflicts:ICCE. no erased_super_default.
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|
1248 selected_method->access_flags().print_on(tty); |
12823
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1249 if (selected_method->is_default_method()) { |
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1250 tty->print("default "); |
12318
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|
1251 } |
12823
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|
1252 if (selected_method->is_overpass()) { |
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|
1253 tty->print("overpass"); |
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|
1254 } |
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|
1255 tty->cr(); |
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|
1256 } |
0 | 1257 // setup result |
1258 result.set_virtual(resolved_klass, recv_klass, resolved_method, selected_method, vtable_index, CHECK); | |
1259 } | |
1260 | |
1261 void LinkResolver::resolve_interface_call(CallInfo& result, Handle recv, KlassHandle recv_klass, KlassHandle resolved_klass, | |
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1262 Symbol* method_name, Symbol* method_signature, KlassHandle current_klass, |
0 | 1263 bool check_access, bool check_null_and_abstract, TRAPS) { |
1264 methodHandle resolved_method; | |
1265 linktime_resolve_interface_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK); | |
1266 runtime_resolve_interface_method(result, resolved_method, resolved_klass, recv, recv_klass, check_null_and_abstract, CHECK); | |
1267 } | |
1268 | |
1269 // throws linktime exceptions | |
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|
1270 void LinkResolver::linktime_resolve_interface_method(methodHandle& resolved_method, KlassHandle resolved_klass, Symbol* method_name, |
3582bf76420e
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|
1271 Symbol* method_signature, KlassHandle current_klass, bool check_access, TRAPS) { |
0 | 1272 // normal interface method resolution |
13413 | 1273 resolve_interface_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, true, CHECK); |
0 | 1274 |
1275 assert(resolved_method->name() != vmSymbols::object_initializer_name(), "should have been checked in verifier"); | |
1276 assert(resolved_method->name() != vmSymbols::class_initializer_name (), "should have been checked in verifier"); | |
1277 } | |
1278 | |
1279 // throws runtime exceptions | |
1280 void LinkResolver::runtime_resolve_interface_method(CallInfo& result, methodHandle resolved_method, KlassHandle resolved_klass, | |
1281 Handle recv, KlassHandle recv_klass, bool check_null_and_abstract, TRAPS) { | |
1282 // check if receiver exists | |
1283 if (check_null_and_abstract && recv.is_null()) { | |
1284 THROW(vmSymbols::java_lang_NullPointerException()); | |
1285 } | |
1286 | |
12318
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1287 // check if private interface method |
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1288 if (resolved_klass->is_interface() && resolved_method->is_private()) { |
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|
1289 ResourceMark rm(THREAD); |
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|
1290 char buf[200]; |
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|
1291 jio_snprintf(buf, sizeof(buf), "private interface method requires invokespecial, not invokeinterface: method %s", |
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1292 Method::name_and_sig_as_C_string(resolved_klass(), |
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|
1293 resolved_method->name(), |
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|
1294 resolved_method->signature())); |
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|
1295 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); |
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|
1296 } |
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|
1297 |
0 | 1298 // check if receiver klass implements the resolved interface |
1299 if (!recv_klass->is_subtype_of(resolved_klass())) { | |
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|
1300 ResourceMark rm(THREAD); |
0 | 1301 char buf[200]; |
1302 jio_snprintf(buf, sizeof(buf), "Class %s does not implement the requested interface %s", | |
6983 | 1303 recv_klass()->external_name(), |
1304 resolved_klass()->external_name()); | |
0 | 1305 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); |
1306 } | |
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diff
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|
1307 |
0 | 1308 // do lookup based on receiver klass |
1309 methodHandle sel_method; | |
14221
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|
1310 // This search must match the linktime preparation search for itable initialization |
2353011244bd
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|
1311 // to correctly enforce loader constraints for interface method inheritance |
0 | 1312 lookup_instance_method_in_klasses(sel_method, recv_klass, |
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|
1313 resolved_method->name(), |
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|
1314 resolved_method->signature(), CHECK); |
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1315 if (sel_method.is_null() && !check_null_and_abstract) { |
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1316 // In theory this is a harmless placeholder value, but |
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|
1317 // in practice leaving in null affects the nsk default method tests. |
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|
1318 // This needs further study. |
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|
1319 sel_method = resolved_method; |
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|
1320 } |
0 | 1321 // check if method exists |
1322 if (sel_method.is_null()) { | |
1323 ResourceMark rm(THREAD); | |
1324 THROW_MSG(vmSymbols::java_lang_AbstractMethodError(), | |
6983 | 1325 Method::name_and_sig_as_C_string(recv_klass(), |
0 | 1326 resolved_method->name(), |
1327 resolved_method->signature())); | |
1328 } | |
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|
1329 // check access |
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1330 // Throw Illegal Access Error if sel_method is not public. |
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1331 if (!sel_method->is_public()) { |
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|
1332 ResourceMark rm(THREAD); |
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|
1333 THROW_MSG(vmSymbols::java_lang_IllegalAccessError(), |
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|
1334 Method::name_and_sig_as_C_string(recv_klass(), |
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|
1335 sel_method->name(), |
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|
1336 sel_method->signature())); |
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|
1337 } |
0 | 1338 // check if abstract |
1339 if (check_null_and_abstract && sel_method->is_abstract()) { | |
1340 ResourceMark rm(THREAD); | |
1341 THROW_MSG(vmSymbols::java_lang_AbstractMethodError(), | |
6983 | 1342 Method::name_and_sig_as_C_string(recv_klass(), |
0 | 1343 sel_method->name(), |
1344 sel_method->signature())); | |
1345 } | |
12318
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|
1346 |
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|
1347 if (TraceItables && Verbose) { |
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|
1348 ResourceMark rm(THREAD); |
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|
1349 tty->print("invokeinterface selected method: receiver-class:%s, resolved-class:%s, method:%s, method_holder:%s, access_flags: ", |
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1350 (recv_klass.is_null() ? "<NULL>" : recv_klass->internal_name()), |
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1351 (resolved_klass.is_null() ? "<NULL>" : resolved_klass->internal_name()), |
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1352 Method::name_and_sig_as_C_string(resolved_klass(), |
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|
1353 resolved_method->name(), |
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|
1354 resolved_method->signature()), |
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|
1355 sel_method->method_holder()->internal_name() |
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|
1356 ); |
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|
1357 sel_method->access_flags().print_on(tty); |
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|
1358 if (sel_method->is_default_method()) { |
13055
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|
1359 tty->print("default "); |
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|
1360 } |
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|
1361 if (sel_method->is_overpass()) { |
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|
1362 tty->print("overpass"); |
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|
1363 } |
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|
1364 tty->cr(); |
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|
1365 } |
13055
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|
1366 // setup result |
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|
1367 if (!resolved_method->has_itable_index()) { |
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|
1368 int vtable_index = resolved_method->vtable_index(); |
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|
1369 assert(vtable_index == sel_method->vtable_index(), "sanity check"); |
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|
1370 result.set_virtual(resolved_klass, recv_klass, resolved_method, sel_method, vtable_index, CHECK); |
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1371 } else { |
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|
1372 int itable_index = resolved_method()->itable_index(); |
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|
1373 result.set_interface(resolved_klass, recv_klass, resolved_method, sel_method, itable_index, CHECK); |
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1374 } |
0 | 1375 } |
1376 | |
1377 | |
1378 methodHandle LinkResolver::linktime_resolve_interface_method_or_null( | |
1379 KlassHandle resolved_klass, | |
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1380 Symbol* method_name, |
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1381 Symbol* method_signature, |
0 | 1382 KlassHandle current_klass, |
1383 bool check_access) { | |
1384 EXCEPTION_MARK; | |
1385 methodHandle method_result; | |
1386 linktime_resolve_interface_method(method_result, resolved_klass, method_name, method_signature, current_klass, check_access, THREAD); | |
1387 if (HAS_PENDING_EXCEPTION) { | |
1388 CLEAR_PENDING_EXCEPTION; | |
1389 return methodHandle(); | |
1390 } else { | |
1391 return method_result; | |
1392 } | |
1393 } | |
1394 | |
1395 methodHandle LinkResolver::linktime_resolve_virtual_method_or_null( | |
1396 KlassHandle resolved_klass, | |
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1397 Symbol* method_name, |
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1398 Symbol* method_signature, |
0 | 1399 KlassHandle current_klass, |
1400 bool check_access) { | |
1401 EXCEPTION_MARK; | |
1402 methodHandle method_result; | |
1403 linktime_resolve_virtual_method(method_result, resolved_klass, method_name, method_signature, current_klass, check_access, THREAD); | |
1404 if (HAS_PENDING_EXCEPTION) { | |
1405 CLEAR_PENDING_EXCEPTION; | |
1406 return methodHandle(); | |
1407 } else { | |
1408 return method_result; | |
1409 } | |
1410 } | |
1411 | |
1412 methodHandle LinkResolver::resolve_virtual_call_or_null( | |
1413 KlassHandle receiver_klass, | |
1414 KlassHandle resolved_klass, | |
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1415 Symbol* name, |
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1416 Symbol* signature, |
0 | 1417 KlassHandle current_klass) { |
1418 EXCEPTION_MARK; | |
1419 CallInfo info; | |
1420 resolve_virtual_call(info, Handle(), receiver_klass, resolved_klass, name, signature, current_klass, true, false, THREAD); | |
1421 if (HAS_PENDING_EXCEPTION) { | |
1422 CLEAR_PENDING_EXCEPTION; | |
1423 return methodHandle(); | |
1424 } | |
1425 return info.selected_method(); | |
1426 } | |
1427 | |
1428 methodHandle LinkResolver::resolve_interface_call_or_null( | |
1429 KlassHandle receiver_klass, | |
1430 KlassHandle resolved_klass, | |
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1431 Symbol* name, |
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|
1432 Symbol* signature, |
0 | 1433 KlassHandle current_klass) { |
1434 EXCEPTION_MARK; | |
1435 CallInfo info; | |
1436 resolve_interface_call(info, Handle(), receiver_klass, resolved_klass, name, signature, current_klass, true, false, THREAD); | |
1437 if (HAS_PENDING_EXCEPTION) { | |
1438 CLEAR_PENDING_EXCEPTION; | |
1439 return methodHandle(); | |
1440 } | |
1441 return info.selected_method(); | |
1442 } | |
1443 | |
1444 int LinkResolver::resolve_virtual_vtable_index( | |
1445 KlassHandle receiver_klass, | |
1446 KlassHandle resolved_klass, | |
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1447 Symbol* name, |
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|
1448 Symbol* signature, |
0 | 1449 KlassHandle current_klass) { |
1450 EXCEPTION_MARK; | |
1451 CallInfo info; | |
1452 resolve_virtual_call(info, Handle(), receiver_klass, resolved_klass, name, signature, current_klass, true, false, THREAD); | |
1453 if (HAS_PENDING_EXCEPTION) { | |
1454 CLEAR_PENDING_EXCEPTION; | |
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1455 return Method::invalid_vtable_index; |
0 | 1456 } |
1457 return info.vtable_index(); | |
1458 } | |
1459 | |
1460 methodHandle LinkResolver::resolve_static_call_or_null( | |
1461 KlassHandle resolved_klass, | |
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|
1462 Symbol* name, |
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|
1463 Symbol* signature, |
0 | 1464 KlassHandle current_klass) { |
1465 EXCEPTION_MARK; | |
1466 CallInfo info; | |
1467 resolve_static_call(info, resolved_klass, name, signature, current_klass, true, false, THREAD); | |
1468 if (HAS_PENDING_EXCEPTION) { | |
1469 CLEAR_PENDING_EXCEPTION; | |
1470 return methodHandle(); | |
1471 } | |
1472 return info.selected_method(); | |
1473 } | |
1474 | |
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1475 methodHandle LinkResolver::resolve_special_call_or_null(KlassHandle resolved_klass, Symbol* name, Symbol* signature, |
0 | 1476 KlassHandle current_klass) { |
1477 EXCEPTION_MARK; | |
1478 CallInfo info; | |
1479 resolve_special_call(info, resolved_klass, name, signature, current_klass, true, THREAD); | |
1480 if (HAS_PENDING_EXCEPTION) { | |
1481 CLEAR_PENDING_EXCEPTION; | |
1482 return methodHandle(); | |
1483 } | |
1484 return info.selected_method(); | |
1485 } | |
1486 | |
1487 | |
1488 | |
1489 //------------------------------------------------------------------------------------------------------------------------ | |
1490 // ConstantPool entries | |
1491 | |
1492 void LinkResolver::resolve_invoke(CallInfo& result, Handle recv, constantPoolHandle pool, int index, Bytecodes::Code byte, TRAPS) { | |
1493 switch (byte) { | |
1494 case Bytecodes::_invokestatic : resolve_invokestatic (result, pool, index, CHECK); break; | |
1495 case Bytecodes::_invokespecial : resolve_invokespecial (result, pool, index, CHECK); break; | |
1496 case Bytecodes::_invokevirtual : resolve_invokevirtual (result, recv, pool, index, CHECK); break; | |
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1497 case Bytecodes::_invokehandle : resolve_invokehandle (result, pool, index, CHECK); break; |
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1498 case Bytecodes::_invokedynamic : resolve_invokedynamic (result, pool, index, CHECK); break; |
0 | 1499 case Bytecodes::_invokeinterface: resolve_invokeinterface(result, recv, pool, index, CHECK); break; |
1500 } | |
1501 return; | |
1502 } | |
1503 | |
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1504 void LinkResolver::resolve_pool(KlassHandle& resolved_klass, Symbol*& method_name, Symbol*& method_signature, |
0 | 1505 KlassHandle& current_klass, constantPoolHandle pool, int index, TRAPS) { |
1506 // resolve klass | |
1507 resolve_klass(resolved_klass, pool, index, CHECK); | |
1508 | |
1509 // Get name, signature, and static klass | |
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1510 method_name = pool->name_ref_at(index); |
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1511 method_signature = pool->signature_ref_at(index); |
0 | 1512 current_klass = KlassHandle(THREAD, pool->pool_holder()); |
1513 } | |
1514 | |
1515 | |
1516 void LinkResolver::resolve_invokestatic(CallInfo& result, constantPoolHandle pool, int index, TRAPS) { | |
1517 KlassHandle resolved_klass; | |
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1518 Symbol* method_name = NULL; |
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1519 Symbol* method_signature = NULL; |
0 | 1520 KlassHandle current_klass; |
1521 resolve_pool(resolved_klass, method_name, method_signature, current_klass, pool, index, CHECK); | |
1522 resolve_static_call(result, resolved_klass, method_name, method_signature, current_klass, true, true, CHECK); | |
1523 } | |
1524 | |
1525 | |
1526 void LinkResolver::resolve_invokespecial(CallInfo& result, constantPoolHandle pool, int index, TRAPS) { | |
1527 KlassHandle resolved_klass; | |
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1528 Symbol* method_name = NULL; |
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1529 Symbol* method_signature = NULL; |
0 | 1530 KlassHandle current_klass; |
1531 resolve_pool(resolved_klass, method_name, method_signature, current_klass, pool, index, CHECK); | |
1532 resolve_special_call(result, resolved_klass, method_name, method_signature, current_klass, true, CHECK); | |
1533 } | |
1534 | |
1535 | |
1536 void LinkResolver::resolve_invokevirtual(CallInfo& result, Handle recv, | |
1537 constantPoolHandle pool, int index, | |
1538 TRAPS) { | |
1539 | |
1540 KlassHandle resolved_klass; | |
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1541 Symbol* method_name = NULL; |
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1542 Symbol* method_signature = NULL; |
0 | 1543 KlassHandle current_klass; |
1544 resolve_pool(resolved_klass, method_name, method_signature, current_klass, pool, index, CHECK); | |
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1545 KlassHandle recvrKlass (THREAD, recv.is_null() ? (Klass*)NULL : recv->klass()); |
0 | 1546 resolve_virtual_call(result, recv, recvrKlass, resolved_klass, method_name, method_signature, current_klass, true, true, CHECK); |
1547 } | |
1548 | |
1549 | |
1550 void LinkResolver::resolve_invokeinterface(CallInfo& result, Handle recv, constantPoolHandle pool, int index, TRAPS) { | |
1551 KlassHandle resolved_klass; | |
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1552 Symbol* method_name = NULL; |
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1553 Symbol* method_signature = NULL; |
0 | 1554 KlassHandle current_klass; |
1555 resolve_pool(resolved_klass, method_name, method_signature, current_klass, pool, index, CHECK); | |
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1556 KlassHandle recvrKlass (THREAD, recv.is_null() ? (Klass*)NULL : recv->klass()); |
0 | 1557 resolve_interface_call(result, recv, recvrKlass, resolved_klass, method_name, method_signature, current_klass, true, true, CHECK); |
1558 } | |
1559 | |
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1560 |
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1561 void LinkResolver::resolve_invokehandle(CallInfo& result, constantPoolHandle pool, int index, TRAPS) { |
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1562 assert(EnableInvokeDynamic, ""); |
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1563 // This guy is reached from InterpreterRuntime::resolve_invokehandle. |
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|
1564 KlassHandle resolved_klass; |
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1565 Symbol* method_name = NULL; |
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1566 Symbol* method_signature = NULL; |
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1567 KlassHandle current_klass; |
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|
1568 resolve_pool(resolved_klass, method_name, method_signature, current_klass, pool, index, CHECK); |
9082 | 1569 if (TraceMethodHandles) { |
1570 ResourceMark rm(THREAD); | |
6266
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1571 tty->print_cr("resolve_invokehandle %s %s", method_name->as_C_string(), method_signature->as_C_string()); |
9082 | 1572 } |
6266
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1573 resolve_handle_call(result, resolved_klass, method_name, method_signature, current_klass, CHECK); |
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1574 } |
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1575 |
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1576 void LinkResolver::resolve_handle_call(CallInfo& result, KlassHandle resolved_klass, |
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1577 Symbol* method_name, Symbol* method_signature, |
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|
1578 KlassHandle current_klass, |
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|
1579 TRAPS) { |
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|
1580 // JSR 292: this must be an implicitly generated method MethodHandle.invokeExact(*...) or similar |
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1581 assert(resolved_klass() == SystemDictionary::MethodHandle_klass(), ""); |
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1582 assert(MethodHandles::is_signature_polymorphic_name(method_name), ""); |
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1583 methodHandle resolved_method; |
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1584 Handle resolved_appendix; |
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1585 Handle resolved_method_type; |
6266
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1586 lookup_polymorphic_method(resolved_method, resolved_klass, |
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1587 method_name, method_signature, |
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1588 current_klass, &resolved_appendix, &resolved_method_type, CHECK); |
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1589 result.set_handle(resolved_method, resolved_appendix, resolved_method_type, CHECK); |
6266
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1590 } |
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1591 |
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1592 |
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|
1593 void LinkResolver::resolve_invokedynamic(CallInfo& result, constantPoolHandle pool, int index, TRAPS) { |
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1594 assert(EnableInvokeDynamic, ""); |
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1595 |
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1596 //resolve_pool(<resolved_klass>, method_name, method_signature, current_klass, pool, index, CHECK); |
6266
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1597 Symbol* method_name = pool->name_ref_at(index); |
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1598 Symbol* method_signature = pool->signature_ref_at(index); |
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1599 KlassHandle current_klass = KlassHandle(THREAD, pool->pool_holder()); |
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1600 |
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1601 // Resolve the bootstrap specifier (BSM + optional arguments). |
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1602 Handle bootstrap_specifier; |
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1603 // Check if CallSite has been bound already: |
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1604 ConstantPoolCacheEntry* cpce = pool->invokedynamic_cp_cache_entry_at(index); |
6266
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1605 if (cpce->is_f1_null()) { |
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1606 int pool_index = cpce->constant_pool_index(); |
6266
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1607 oop bsm_info = pool->resolve_bootstrap_specifier_at(pool_index, CHECK); |
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1608 assert(bsm_info != NULL, ""); |
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1609 // FIXME: Cache this once per BootstrapMethods entry, not once per CONSTANT_InvokeDynamic. |
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1610 bootstrap_specifier = Handle(THREAD, bsm_info); |
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1611 } |
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1612 if (!cpce->is_f1_null()) { |
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1613 methodHandle method( THREAD, cpce->f1_as_method()); |
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1614 Handle appendix( THREAD, cpce->appendix_if_resolved(pool)); |
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1615 Handle method_type(THREAD, cpce->method_type_if_resolved(pool)); |
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1616 result.set_handle(method, appendix, method_type, CHECK); |
6266
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1617 return; |
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|
1618 } |
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1619 |
6266
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1620 if (TraceMethodHandles) { |
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|
1621 ResourceMark rm(THREAD); |
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|
1622 tty->print_cr("resolve_invokedynamic #%d %s %s", |
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|
1623 ConstantPool::decode_invokedynamic_index(index), |
6266
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1624 method_name->as_C_string(), method_signature->as_C_string()); |
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1625 tty->print(" BSM info: "); bootstrap_specifier->print(); |
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|
1626 } |
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|
1627 |
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|
1628 resolve_dynamic_call(result, bootstrap_specifier, method_name, method_signature, current_klass, CHECK); |
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|
1629 } |
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|
1630 |
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|
1631 void LinkResolver::resolve_dynamic_call(CallInfo& result, |
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|
1632 Handle bootstrap_specifier, |
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|
1633 Symbol* method_name, Symbol* method_signature, |
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|
1634 KlassHandle current_klass, |
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|
1635 TRAPS) { |
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|
1636 // JSR 292: this must resolve to an implicitly generated method MH.linkToCallSite(*...) |
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|
1637 // The appendix argument is likely to be a freshly-created CallSite. |
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|
1638 Handle resolved_appendix; |
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|
1639 Handle resolved_method_type; |
6266
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|
1640 methodHandle resolved_method = |
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|
1641 SystemDictionary::find_dynamic_call_site_invoker(current_klass, |
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|
1642 bootstrap_specifier, |
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|
1643 method_name, method_signature, |
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|
1644 &resolved_appendix, |
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|
1645 &resolved_method_type, |
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|
1646 THREAD); |
3417
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|
1647 if (HAS_PENDING_EXCEPTION) { |
6266
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|
1648 if (TraceMethodHandles) { |
17937
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8037816: Fix for 8036122 breaks build with Xcode5/clang
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|
1649 tty->print_cr("invokedynamic throws BSME for " INTPTR_FORMAT, p2i((void *)PENDING_EXCEPTION)); |
6266
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|
1650 PENDING_EXCEPTION->print(); |
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|
1651 } |
3417
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|
1652 if (PENDING_EXCEPTION->is_a(SystemDictionary::BootstrapMethodError_klass())) { |
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|
1653 // throw these guys, since they are already wrapped |
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|
1654 return; |
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|
1655 } |
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|
1656 if (!PENDING_EXCEPTION->is_a(SystemDictionary::LinkageError_klass())) { |
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|
1657 // intercept only LinkageErrors which might have failed to wrap |
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|
1658 return; |
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|
1659 } |
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|
1660 // See the "Linking Exceptions" section for the invokedynamic instruction in the JVMS. |
6266
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|
1661 Handle nested_exception(THREAD, PENDING_EXCEPTION); |
3417
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|
1662 CLEAR_PENDING_EXCEPTION; |
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|
1663 THROW_CAUSE(vmSymbols::java_lang_BootstrapMethodError(), nested_exception) |
3417
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|
1664 } |
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|
1665 result.set_handle(resolved_method, resolved_appendix, resolved_method_type, CHECK); |
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|
1666 } |
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|
1667 |
0 | 1668 //------------------------------------------------------------------------------------------------------------------------ |
1669 #ifndef PRODUCT | |
1670 | |
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|
1671 void CallInfo::print() { |
0 | 1672 ResourceMark rm; |
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|
1673 const char* kindstr = "unknown"; |
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|
1674 switch (_call_kind) { |
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|
1675 case direct_call: kindstr = "direct"; break; |
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|
1676 case vtable_call: kindstr = "vtable"; break; |
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|
1677 case itable_call: kindstr = "itable"; break; |
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|
1678 } |
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|
1679 tty->print_cr("Call %s@%d %s", kindstr, _call_index, |
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|
1680 _resolved_method.is_null() ? "(none)" : _resolved_method->name_and_sig_as_C_string()); |
0 | 1681 } |
1682 | |
1683 #endif |