Mercurial > hg > truffle
annotate src/share/vm/prims/methodHandles.cpp @ 3678:9482471a7dfa
IdealGraphVisualizer: add a workaround to fix layouting of the QuickSearch combobar with the GTK look and feel
author | Peter Hofer <peter.hofer@jku.at> |
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date | Mon, 21 Nov 2011 15:54:32 +0100 |
parents | 81d815b05abb |
children | 43f9d800f276 |
rev | line source |
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710 | 1 /* |
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2 * Copyright (c) 2008, 2011, Oracle and/or its affiliates. All rights reserved. |
710 | 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. |
710 | 22 * |
23 */ | |
24 | |
1972 | 25 #include "precompiled.hpp" |
26 #include "classfile/symbolTable.hpp" | |
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27 #include "compiler/compileBroker.hpp" |
1972 | 28 #include "interpreter/interpreter.hpp" |
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29 #include "interpreter/oopMapCache.hpp" |
1972 | 30 #include "memory/allocation.inline.hpp" |
31 #include "memory/oopFactory.hpp" | |
32 #include "prims/methodHandles.hpp" | |
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33 #include "prims/methodHandleWalk.hpp" |
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34 #include "runtime/compilationPolicy.hpp" |
1972 | 35 #include "runtime/javaCalls.hpp" |
36 #include "runtime/reflection.hpp" | |
37 #include "runtime/signature.hpp" | |
38 #include "runtime/stubRoutines.hpp" | |
39 | |
710 | 40 /* |
41 * JSR 292 reference implementation: method handles | |
42 */ | |
43 | |
44 bool MethodHandles::_enabled = false; // set true after successful native linkage | |
45 | |
46 MethodHandleEntry* MethodHandles::_entries[MethodHandles::_EK_LIMIT] = {NULL}; | |
47 const char* MethodHandles::_entry_names[_EK_LIMIT+1] = { | |
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48 "raise_exception", |
710 | 49 "invokestatic", // how a MH emulates invokestatic |
50 "invokespecial", // ditto for the other invokes... | |
51 "invokevirtual", | |
52 "invokeinterface", | |
53 "bound_ref", // these are for BMH... | |
54 "bound_int", | |
55 "bound_long", | |
56 "bound_ref_direct", // (direct versions have a direct methodOop) | |
57 "bound_int_direct", | |
58 "bound_long_direct", | |
59 | |
60 // starting at _adapter_mh_first: | |
61 "adapter_retype_only", // these are for AMH... | |
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62 "adapter_retype_raw", |
710 | 63 "adapter_check_cast", |
64 "adapter_prim_to_prim", | |
65 "adapter_ref_to_prim", | |
66 "adapter_prim_to_ref", | |
67 "adapter_swap_args", | |
68 "adapter_rot_args", | |
69 "adapter_dup_args", | |
70 "adapter_drop_args", | |
71 "adapter_collect_args", | |
72 "adapter_spread_args", | |
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73 "adapter_fold_args", |
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74 "adapter_unused_13", |
710 | 75 |
76 // optimized adapter types: | |
77 "adapter_swap_args/1", | |
78 "adapter_swap_args/2", | |
79 "adapter_rot_args/1,up", | |
80 "adapter_rot_args/1,down", | |
81 "adapter_rot_args/2,up", | |
82 "adapter_rot_args/2,down", | |
83 "adapter_prim_to_prim/i2i", | |
84 "adapter_prim_to_prim/l2i", | |
85 "adapter_prim_to_prim/d2f", | |
86 "adapter_prim_to_prim/i2l", | |
87 "adapter_prim_to_prim/f2d", | |
88 "adapter_ref_to_prim/unboxi", | |
89 "adapter_ref_to_prim/unboxl", | |
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90 |
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91 // return value handlers for collect/filter/fold adapters: |
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92 "return/ref", |
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93 "return/int", |
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94 "return/long", |
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95 "return/float", |
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96 "return/double", |
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97 "return/void", |
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98 "return/S0/ref", |
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99 "return/S1/ref", |
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100 "return/S2/ref", |
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101 "return/S3/ref", |
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102 "return/S4/ref", |
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103 "return/S5/ref", |
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104 "return/any", |
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105 |
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106 // spreading (array length cases 0, 1, ...) |
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107 "adapter_spread/0", |
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108 "adapter_spread/1/ref", |
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109 "adapter_spread/2/ref", |
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110 "adapter_spread/3/ref", |
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111 "adapter_spread/4/ref", |
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112 "adapter_spread/5/ref", |
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113 "adapter_spread/ref", |
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114 "adapter_spread/byte", |
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115 "adapter_spread/char", |
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116 "adapter_spread/short", |
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117 "adapter_spread/int", |
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118 "adapter_spread/long", |
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119 "adapter_spread/float", |
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120 "adapter_spread/double", |
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121 |
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122 // blocking filter/collect conversions: |
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123 "adapter_collect/ref", |
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124 "adapter_collect/int", |
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125 "adapter_collect/long", |
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126 "adapter_collect/float", |
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127 "adapter_collect/double", |
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128 "adapter_collect/void", |
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129 "adapter_collect/0/ref", |
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130 "adapter_collect/1/ref", |
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131 "adapter_collect/2/ref", |
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132 "adapter_collect/3/ref", |
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133 "adapter_collect/4/ref", |
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134 "adapter_collect/5/ref", |
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135 "adapter_filter/S0/ref", |
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136 "adapter_filter/S1/ref", |
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137 "adapter_filter/S2/ref", |
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138 "adapter_filter/S3/ref", |
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139 "adapter_filter/S4/ref", |
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140 "adapter_filter/S5/ref", |
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141 "adapter_collect/2/S0/ref", |
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142 "adapter_collect/2/S1/ref", |
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143 "adapter_collect/2/S2/ref", |
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144 "adapter_collect/2/S3/ref", |
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145 "adapter_collect/2/S4/ref", |
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146 "adapter_collect/2/S5/ref", |
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147 |
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148 // blocking fold conversions: |
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149 "adapter_fold/ref", |
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150 "adapter_fold/int", |
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151 "adapter_fold/long", |
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152 "adapter_fold/float", |
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153 "adapter_fold/double", |
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154 "adapter_fold/void", |
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155 "adapter_fold/1/ref", |
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156 "adapter_fold/2/ref", |
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157 "adapter_fold/3/ref", |
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158 "adapter_fold/4/ref", |
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159 "adapter_fold/5/ref", |
710 | 160 |
161 NULL | |
162 }; | |
163 | |
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164 // Adapters. |
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165 MethodHandlesAdapterBlob* MethodHandles::_adapter_code = NULL; |
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166 |
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167 jobject MethodHandles::_raise_exception_method; |
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168 |
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169 address MethodHandles::_adapter_return_handlers[CONV_TYPE_MASK+1]; |
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170 |
710 | 171 #ifdef ASSERT |
172 bool MethodHandles::spot_check_entry_names() { | |
173 assert(!strcmp(entry_name(_invokestatic_mh), "invokestatic"), ""); | |
174 assert(!strcmp(entry_name(_bound_ref_mh), "bound_ref"), ""); | |
175 assert(!strcmp(entry_name(_adapter_retype_only), "adapter_retype_only"), ""); | |
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176 assert(!strcmp(entry_name(_adapter_fold_args), "adapter_fold_args"), ""); |
710 | 177 assert(!strcmp(entry_name(_adapter_opt_unboxi), "adapter_ref_to_prim/unboxi"), ""); |
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178 assert(!strcmp(entry_name(_adapter_opt_spread_char), "adapter_spread/char"), ""); |
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179 assert(!strcmp(entry_name(_adapter_opt_spread_double), "adapter_spread/double"), ""); |
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180 assert(!strcmp(entry_name(_adapter_opt_collect_int), "adapter_collect/int"), ""); |
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181 assert(!strcmp(entry_name(_adapter_opt_collect_0_ref), "adapter_collect/0/ref"), ""); |
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182 assert(!strcmp(entry_name(_adapter_opt_collect_2_S3_ref), "adapter_collect/2/S3/ref"), ""); |
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183 assert(!strcmp(entry_name(_adapter_opt_filter_S5_ref), "adapter_filter/S5/ref"), ""); |
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184 assert(!strcmp(entry_name(_adapter_opt_fold_3_ref), "adapter_fold/3/ref"), ""); |
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185 assert(!strcmp(entry_name(_adapter_opt_fold_void), "adapter_fold/void"), ""); |
710 | 186 return true; |
187 } | |
188 #endif | |
189 | |
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190 |
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191 //------------------------------------------------------------------------------ |
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192 // MethodHandles::generate_adapters |
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193 // |
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194 void MethodHandles::generate_adapters() { |
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195 #ifdef TARGET_ARCH_NYI_6939861 |
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196 if (FLAG_IS_DEFAULT(UseRicochetFrames)) UseRicochetFrames = false; |
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197 #endif |
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198 if (!EnableInvokeDynamic || SystemDictionary::MethodHandle_klass() == NULL) return; |
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199 |
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200 assert(_adapter_code == NULL, "generate only once"); |
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201 |
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202 ResourceMark rm; |
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203 TraceTime timer("MethodHandles adapters generation", TraceStartupTime); |
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204 _adapter_code = MethodHandlesAdapterBlob::create(adapter_code_size); |
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205 if (_adapter_code == NULL) |
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206 vm_exit_out_of_memory(adapter_code_size, "CodeCache: no room for MethodHandles adapters"); |
1748 | 207 CodeBuffer code(_adapter_code); |
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208 MethodHandlesAdapterGenerator g(&code); |
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209 g.generate(); |
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210 } |
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211 |
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212 //------------------------------------------------------------------------------ |
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213 // MethodHandlesAdapterGenerator::generate |
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214 // |
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215 void MethodHandlesAdapterGenerator::generate() { |
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216 // Generate generic method handle adapters. |
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217 for (MethodHandles::EntryKind ek = MethodHandles::_EK_FIRST; |
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218 ek < MethodHandles::_EK_LIMIT; |
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219 ek = MethodHandles::EntryKind(1 + (int)ek)) { |
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220 if (MethodHandles::ek_supported(ek)) { |
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221 StubCodeMark mark(this, "MethodHandle", MethodHandles::entry_name(ek)); |
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222 MethodHandles::generate_method_handle_stub(_masm, ek); |
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223 } |
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224 } |
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225 } |
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226 |
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227 |
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228 #ifdef TARGET_ARCH_NYI_6939861 |
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229 // these defs belong in methodHandles_<arch>.cpp |
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230 frame MethodHandles::ricochet_frame_sender(const frame& fr, RegisterMap *map) { |
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231 ShouldNotCallThis(); |
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232 return fr; |
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233 } |
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234 void MethodHandles::ricochet_frame_oops_do(const frame& fr, OopClosure* f, const RegisterMap* reg_map) { |
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235 ShouldNotCallThis(); |
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236 } |
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237 #endif //TARGET_ARCH_NYI_6939861 |
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238 |
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239 |
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240 //------------------------------------------------------------------------------ |
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241 // MethodHandles::ek_supported |
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242 // |
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243 bool MethodHandles::ek_supported(MethodHandles::EntryKind ek) { |
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244 MethodHandles::EntryKind ek_orig = MethodHandles::ek_original_kind(ek); |
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245 switch (ek_orig) { |
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246 case _adapter_unused_13: |
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247 return false; // not defined yet |
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248 case _adapter_prim_to_ref: |
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249 return UseRicochetFrames && conv_op_supported(java_lang_invoke_AdapterMethodHandle::OP_PRIM_TO_REF); |
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250 case _adapter_collect_args: |
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251 return UseRicochetFrames && conv_op_supported(java_lang_invoke_AdapterMethodHandle::OP_COLLECT_ARGS); |
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252 case _adapter_fold_args: |
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253 return UseRicochetFrames && conv_op_supported(java_lang_invoke_AdapterMethodHandle::OP_FOLD_ARGS); |
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254 case _adapter_opt_return_any: |
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255 return UseRicochetFrames; |
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256 #ifdef TARGET_ARCH_NYI_6939861 |
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257 // ports before 6939861 supported only three kinds of spread ops |
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258 case _adapter_spread_args: |
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259 // restrict spreads to three kinds: |
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260 switch (ek) { |
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261 case _adapter_opt_spread_0: |
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262 case _adapter_opt_spread_1: |
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263 case _adapter_opt_spread_more: |
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264 break; |
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265 default: |
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266 return false; |
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267 break; |
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268 } |
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269 break; |
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270 #endif //TARGET_ARCH_NYI_6939861 |
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271 } |
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272 return true; |
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273 } |
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274 |
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275 |
710 | 276 void MethodHandles::set_enabled(bool z) { |
277 if (_enabled != z) { | |
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278 guarantee(z && EnableInvokeDynamic, "can only enable once, and only if -XX:+EnableInvokeDynamic"); |
710 | 279 _enabled = z; |
280 } | |
281 } | |
282 | |
283 // Note: A method which does not have a TRAPS argument cannot block in the GC | |
284 // or throw exceptions. Such methods are used in this file to do something quick | |
285 // and local, like parse a data structure. For speed, such methods work on plain | |
286 // oops, not handles. Trapping methods uniformly operate on handles. | |
287 | |
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288 methodHandle MethodHandles::decode_vmtarget(oop vmtarget, int vmindex, oop mtype, |
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289 KlassHandle& receiver_limit_result, int& decode_flags_result) { |
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290 if (vmtarget == NULL) return methodHandle(); |
710 | 291 assert(methodOopDesc::nonvirtual_vtable_index < 0, "encoding"); |
292 if (vmindex < 0) { | |
293 // this DMH performs no dispatch; it is directly bound to a methodOop | |
294 // A MemberName may either be directly bound to a methodOop, | |
295 // or it may use the klass/index form; both forms mean the same thing. | |
296 methodOop m = decode_methodOop(methodOop(vmtarget), decode_flags_result); | |
297 if ((decode_flags_result & _dmf_has_receiver) != 0 | |
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298 && java_lang_invoke_MethodType::is_instance(mtype)) { |
710 | 299 // Extract receiver type restriction from mtype.ptypes[0]. |
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300 objArrayOop ptypes = java_lang_invoke_MethodType::ptypes(mtype); |
710 | 301 oop ptype0 = (ptypes == NULL || ptypes->length() < 1) ? oop(NULL) : ptypes->obj_at(0); |
302 if (java_lang_Class::is_instance(ptype0)) | |
303 receiver_limit_result = java_lang_Class::as_klassOop(ptype0); | |
304 } | |
305 if (vmindex == methodOopDesc::nonvirtual_vtable_index) { | |
306 // this DMH can be an "invokespecial" version | |
307 decode_flags_result &= ~_dmf_does_dispatch; | |
308 } else { | |
309 assert(vmindex == methodOopDesc::invalid_vtable_index, "random vmindex?"); | |
310 } | |
311 return m; | |
312 } else { | |
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313 assert(vmtarget->is_klass(), "must be class or interface"); |
710 | 314 decode_flags_result |= MethodHandles::_dmf_does_dispatch; |
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315 decode_flags_result |= MethodHandles::_dmf_has_receiver; |
710 | 316 receiver_limit_result = (klassOop)vmtarget; |
317 Klass* tk = Klass::cast((klassOop)vmtarget); | |
318 if (tk->is_interface()) { | |
319 // an itable linkage is <interface, itable index> | |
320 decode_flags_result |= MethodHandles::_dmf_from_interface; | |
321 return klassItable::method_for_itable_index((klassOop)vmtarget, vmindex); | |
322 } else { | |
323 if (!tk->oop_is_instance()) | |
1142 | 324 tk = instanceKlass::cast(SystemDictionary::Object_klass()); |
710 | 325 return ((instanceKlass*)tk)->method_at_vtable(vmindex); |
326 } | |
327 } | |
328 } | |
329 | |
330 // MemberName and DirectMethodHandle have the same linkage to the JVM internals. | |
331 // (MemberName is the non-operational name used for queries and setup.) | |
332 | |
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333 methodHandle MethodHandles::decode_DirectMethodHandle(oop mh, KlassHandle& receiver_limit_result, int& decode_flags_result) { |
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334 oop vmtarget = java_lang_invoke_DirectMethodHandle::vmtarget(mh); |
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335 int vmindex = java_lang_invoke_DirectMethodHandle::vmindex(mh); |
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336 oop mtype = java_lang_invoke_DirectMethodHandle::type(mh); |
710 | 337 return decode_vmtarget(vmtarget, vmindex, mtype, receiver_limit_result, decode_flags_result); |
338 } | |
339 | |
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340 methodHandle MethodHandles::decode_BoundMethodHandle(oop mh, KlassHandle& receiver_limit_result, int& decode_flags_result) { |
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341 assert(java_lang_invoke_BoundMethodHandle::is_instance(mh), ""); |
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342 assert(mh->klass() != SystemDictionary::AdapterMethodHandle_klass(), ""); |
710 | 343 for (oop bmh = mh;;) { |
344 // Bound MHs can be stacked to bind several arguments. | |
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345 oop target = java_lang_invoke_MethodHandle::vmtarget(bmh); |
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346 if (target == NULL) return methodHandle(); |
710 | 347 decode_flags_result |= MethodHandles::_dmf_binds_argument; |
348 klassOop tk = target->klass(); | |
349 if (tk == SystemDictionary::BoundMethodHandle_klass()) { | |
350 bmh = target; | |
351 continue; | |
352 } else { | |
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353 if (java_lang_invoke_MethodHandle::is_subclass(tk)) { |
710 | 354 //assert(tk == SystemDictionary::DirectMethodHandle_klass(), "end of BMH chain must be DMH"); |
355 return decode_MethodHandle(target, receiver_limit_result, decode_flags_result); | |
356 } else { | |
357 // Optimized case: binding a receiver to a non-dispatched DMH | |
358 // short-circuits directly to the methodOop. | |
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359 // (It might be another argument besides a receiver also.) |
710 | 360 assert(target->is_method(), "must be a simple method"); |
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361 decode_flags_result |= MethodHandles::_dmf_binds_method; |
710 | 362 methodOop m = (methodOop) target; |
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363 if (!m->is_static()) |
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364 decode_flags_result |= MethodHandles::_dmf_has_receiver; |
710 | 365 return m; |
366 } | |
367 } | |
368 } | |
369 } | |
370 | |
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371 methodHandle MethodHandles::decode_AdapterMethodHandle(oop mh, KlassHandle& receiver_limit_result, int& decode_flags_result) { |
710 | 372 assert(mh->klass() == SystemDictionary::AdapterMethodHandle_klass(), ""); |
373 for (oop amh = mh;;) { | |
374 // Adapter MHs can be stacked to convert several arguments. | |
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375 int conv_op = adapter_conversion_op(java_lang_invoke_AdapterMethodHandle::conversion(amh)); |
710 | 376 decode_flags_result |= (_dmf_adapter_lsb << conv_op) & _DMF_ADAPTER_MASK; |
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377 oop target = java_lang_invoke_MethodHandle::vmtarget(amh); |
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378 if (target == NULL) return methodHandle(); |
710 | 379 klassOop tk = target->klass(); |
380 if (tk == SystemDictionary::AdapterMethodHandle_klass()) { | |
381 amh = target; | |
382 continue; | |
383 } else { | |
384 // must be a BMH (which will bind some more arguments) or a DMH (for the final call) | |
385 return MethodHandles::decode_MethodHandle(target, receiver_limit_result, decode_flags_result); | |
386 } | |
387 } | |
388 } | |
389 | |
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390 methodHandle MethodHandles::decode_MethodHandle(oop mh, KlassHandle& receiver_limit_result, int& decode_flags_result) { |
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391 if (mh == NULL) return methodHandle(); |
710 | 392 klassOop mhk = mh->klass(); |
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393 assert(java_lang_invoke_MethodHandle::is_subclass(mhk), "must be a MethodHandle"); |
710 | 394 if (mhk == SystemDictionary::DirectMethodHandle_klass()) { |
395 return decode_DirectMethodHandle(mh, receiver_limit_result, decode_flags_result); | |
396 } else if (mhk == SystemDictionary::BoundMethodHandle_klass()) { | |
397 return decode_BoundMethodHandle(mh, receiver_limit_result, decode_flags_result); | |
398 } else if (mhk == SystemDictionary::AdapterMethodHandle_klass()) { | |
399 return decode_AdapterMethodHandle(mh, receiver_limit_result, decode_flags_result); | |
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400 } else if (java_lang_invoke_BoundMethodHandle::is_subclass(mhk)) { |
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401 // could be a JavaMethodHandle (but not an adapter MH) |
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402 return decode_BoundMethodHandle(mh, receiver_limit_result, decode_flags_result); |
710 | 403 } else { |
404 assert(false, "cannot parse this MH"); | |
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405 return methodHandle(); // random MH? |
710 | 406 } |
407 } | |
408 | |
409 methodOop MethodHandles::decode_methodOop(methodOop m, int& decode_flags_result) { | |
410 assert(m->is_method(), ""); | |
411 if (m->is_static()) { | |
412 // check that signature begins '(L' or '([' (not '(I', '()', etc.) | |
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413 Symbol* sig = m->signature(); |
710 | 414 BasicType recv_bt = char2type(sig->byte_at(1)); |
415 // Note: recv_bt might be T_ILLEGAL if byte_at(2) is ')' | |
416 assert(sig->byte_at(0) == '(', "must be method sig"); | |
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417 // if (recv_bt == T_OBJECT || recv_bt == T_ARRAY) |
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418 // decode_flags_result |= _dmf_has_receiver; |
710 | 419 } else { |
420 // non-static method | |
421 decode_flags_result |= _dmf_has_receiver; | |
422 if (!m->can_be_statically_bound() && !m->is_initializer()) { | |
423 decode_flags_result |= _dmf_does_dispatch; | |
424 if (Klass::cast(m->method_holder())->is_interface()) | |
425 decode_flags_result |= _dmf_from_interface; | |
426 } | |
427 } | |
428 return m; | |
429 } | |
430 | |
431 | |
432 // A trusted party is handing us a cookie to determine a method. | |
433 // Let's boil it down to the method oop they really want. | |
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434 methodHandle MethodHandles::decode_method(oop x, KlassHandle& receiver_limit_result, int& decode_flags_result) { |
710 | 435 decode_flags_result = 0; |
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436 receiver_limit_result = KlassHandle(); |
710 | 437 klassOop xk = x->klass(); |
438 if (xk == Universe::methodKlassObj()) { | |
439 return decode_methodOop((methodOop) x, decode_flags_result); | |
440 } else if (xk == SystemDictionary::MemberName_klass()) { | |
441 // Note: This only works if the MemberName has already been resolved. | |
442 return decode_MemberName(x, receiver_limit_result, decode_flags_result); | |
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443 } else if (java_lang_invoke_MethodHandle::is_subclass(xk)) { |
710 | 444 return decode_MethodHandle(x, receiver_limit_result, decode_flags_result); |
1142 | 445 } else if (xk == SystemDictionary::reflect_Method_klass()) { |
710 | 446 oop clazz = java_lang_reflect_Method::clazz(x); |
447 int slot = java_lang_reflect_Method::slot(x); | |
448 klassOop k = java_lang_Class::as_klassOop(clazz); | |
449 if (k != NULL && Klass::cast(k)->oop_is_instance()) | |
450 return decode_methodOop(instanceKlass::cast(k)->method_with_idnum(slot), | |
451 decode_flags_result); | |
1142 | 452 } else if (xk == SystemDictionary::reflect_Constructor_klass()) { |
710 | 453 oop clazz = java_lang_reflect_Constructor::clazz(x); |
454 int slot = java_lang_reflect_Constructor::slot(x); | |
455 klassOop k = java_lang_Class::as_klassOop(clazz); | |
456 if (k != NULL && Klass::cast(k)->oop_is_instance()) | |
457 return decode_methodOop(instanceKlass::cast(k)->method_with_idnum(slot), | |
458 decode_flags_result); | |
459 } else { | |
460 // unrecognized object | |
461 assert(!x->is_method(), "already checked"); | |
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462 assert(!java_lang_invoke_MemberName::is_instance(x), "already checked"); |
710 | 463 } |
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464 return methodHandle(); |
710 | 465 } |
466 | |
467 | |
468 int MethodHandles::decode_MethodHandle_stack_pushes(oop mh) { | |
469 if (mh->klass() == SystemDictionary::DirectMethodHandle_klass()) | |
470 return 0; // no push/pop | |
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471 int this_vmslots = java_lang_invoke_MethodHandle::vmslots(mh); |
710 | 472 int last_vmslots = 0; |
473 oop last_mh = mh; | |
474 for (;;) { | |
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475 oop target = java_lang_invoke_MethodHandle::vmtarget(last_mh); |
710 | 476 if (target->klass() == SystemDictionary::DirectMethodHandle_klass()) { |
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477 last_vmslots = java_lang_invoke_MethodHandle::vmslots(target); |
710 | 478 break; |
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479 } else if (!java_lang_invoke_MethodHandle::is_instance(target)) { |
710 | 480 // might be klass or method |
481 assert(target->is_method(), "must get here with a direct ref to method"); | |
482 last_vmslots = methodOop(target)->size_of_parameters(); | |
483 break; | |
484 } | |
485 last_mh = target; | |
486 } | |
487 // If I am called with fewer VM slots than my ultimate callee, | |
488 // it must be that I push the additionally needed slots. | |
489 // Likewise if am called with more VM slots, I will pop them. | |
490 return (last_vmslots - this_vmslots); | |
491 } | |
492 | |
493 | |
494 // MemberName support | |
495 | |
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496 // import java_lang_invoke_MemberName.* |
710 | 497 enum { |
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498 IS_METHOD = java_lang_invoke_MemberName::MN_IS_METHOD, |
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499 IS_CONSTRUCTOR = java_lang_invoke_MemberName::MN_IS_CONSTRUCTOR, |
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500 IS_FIELD = java_lang_invoke_MemberName::MN_IS_FIELD, |
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501 IS_TYPE = java_lang_invoke_MemberName::MN_IS_TYPE, |
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502 SEARCH_SUPERCLASSES = java_lang_invoke_MemberName::MN_SEARCH_SUPERCLASSES, |
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503 SEARCH_INTERFACES = java_lang_invoke_MemberName::MN_SEARCH_INTERFACES, |
710 | 504 ALL_KINDS = IS_METHOD | IS_CONSTRUCTOR | IS_FIELD | IS_TYPE, |
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505 VM_INDEX_UNINITIALIZED = java_lang_invoke_MemberName::VM_INDEX_UNINITIALIZED |
710 | 506 }; |
507 | |
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508 Handle MethodHandles::new_MemberName(TRAPS) { |
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509 Handle empty; |
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510 instanceKlassHandle k(THREAD, SystemDictionary::MemberName_klass()); |
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511 if (!k->is_initialized()) k->initialize(CHECK_(empty)); |
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512 return Handle(THREAD, k->allocate_instance(THREAD)); |
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513 } |
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514 |
710 | 515 void MethodHandles::init_MemberName(oop mname_oop, oop target_oop) { |
1142 | 516 if (target_oop->klass() == SystemDictionary::reflect_Field_klass()) { |
710 | 517 oop clazz = java_lang_reflect_Field::clazz(target_oop); // fd.field_holder() |
518 int slot = java_lang_reflect_Field::slot(target_oop); // fd.index() | |
519 int mods = java_lang_reflect_Field::modifiers(target_oop); | |
520 klassOop k = java_lang_Class::as_klassOop(clazz); | |
521 int offset = instanceKlass::cast(k)->offset_from_fields(slot); | |
522 init_MemberName(mname_oop, k, accessFlags_from(mods), offset); | |
523 } else { | |
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524 KlassHandle receiver_limit; int decode_flags = 0; |
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525 methodHandle m = MethodHandles::decode_method(target_oop, receiver_limit, decode_flags); |
710 | 526 bool do_dispatch = ((decode_flags & MethodHandles::_dmf_does_dispatch) != 0); |
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527 init_MemberName(mname_oop, m(), do_dispatch); |
710 | 528 } |
529 } | |
530 | |
531 void MethodHandles::init_MemberName(oop mname_oop, methodOop m, bool do_dispatch) { | |
532 int flags = ((m->is_initializer() ? IS_CONSTRUCTOR : IS_METHOD) | |
533 | (jushort)( m->access_flags().as_short() & JVM_RECOGNIZED_METHOD_MODIFIERS )); | |
534 oop vmtarget = m; | |
535 int vmindex = methodOopDesc::invalid_vtable_index; // implies no info yet | |
536 if (!do_dispatch || (flags & IS_CONSTRUCTOR) || m->can_be_statically_bound()) | |
537 vmindex = methodOopDesc::nonvirtual_vtable_index; // implies never any dispatch | |
538 assert(vmindex != VM_INDEX_UNINITIALIZED, "Java sentinel value"); | |
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539 java_lang_invoke_MemberName::set_vmtarget(mname_oop, vmtarget); |
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540 java_lang_invoke_MemberName::set_vmindex(mname_oop, vmindex); |
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541 java_lang_invoke_MemberName::set_flags(mname_oop, flags); |
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542 java_lang_invoke_MemberName::set_clazz(mname_oop, Klass::cast(m->method_holder())->java_mirror()); |
710 | 543 } |
544 | |
545 void MethodHandles::init_MemberName(oop mname_oop, klassOop field_holder, AccessFlags mods, int offset) { | |
546 int flags = (IS_FIELD | (jushort)( mods.as_short() & JVM_RECOGNIZED_FIELD_MODIFIERS )); | |
547 oop vmtarget = field_holder; | |
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548 int vmindex = offset; // determines the field uniquely when combined with static bit |
710 | 549 assert(vmindex != VM_INDEX_UNINITIALIZED, "bad alias on vmindex"); |
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550 java_lang_invoke_MemberName::set_vmtarget(mname_oop, vmtarget); |
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551 java_lang_invoke_MemberName::set_vmindex(mname_oop, vmindex); |
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552 java_lang_invoke_MemberName::set_flags(mname_oop, flags); |
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553 java_lang_invoke_MemberName::set_clazz(mname_oop, Klass::cast(field_holder)->java_mirror()); |
710 | 554 } |
555 | |
556 | |
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557 methodHandle MethodHandles::decode_MemberName(oop mname, KlassHandle& receiver_limit_result, int& decode_flags_result) { |
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558 methodHandle empty; |
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559 int flags = java_lang_invoke_MemberName::flags(mname); |
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560 if ((flags & (IS_METHOD | IS_CONSTRUCTOR)) == 0) return empty; // not invocable |
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561 oop vmtarget = java_lang_invoke_MemberName::vmtarget(mname); |
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562 int vmindex = java_lang_invoke_MemberName::vmindex(mname); |
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563 if (vmindex == VM_INDEX_UNINITIALIZED) return empty; // not resolved |
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564 methodHandle m = decode_vmtarget(vmtarget, vmindex, NULL, receiver_limit_result, decode_flags_result); |
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565 oop clazz = java_lang_invoke_MemberName::clazz(mname); |
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566 if (clazz != NULL && java_lang_Class::is_instance(clazz)) { |
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567 klassOop klass = java_lang_Class::as_klassOop(clazz); |
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568 if (klass != NULL) receiver_limit_result = klass; |
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569 } |
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570 return m; |
710 | 571 } |
572 | |
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573 // convert the external string or reflective type to an internal signature |
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574 Symbol* MethodHandles::convert_to_signature(oop type_str, bool polymorphic, TRAPS) { |
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575 if (java_lang_invoke_MethodType::is_instance(type_str)) { |
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576 return java_lang_invoke_MethodType::as_signature(type_str, polymorphic, CHECK_NULL); |
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577 } else if (java_lang_Class::is_instance(type_str)) { |
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578 return java_lang_Class::as_signature(type_str, false, CHECK_NULL); |
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579 } else if (java_lang_String::is_instance(type_str)) { |
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580 if (polymorphic) { |
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581 return java_lang_String::as_symbol(type_str, CHECK_NULL); |
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582 } else { |
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583 return java_lang_String::as_symbol_or_null(type_str); |
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584 } |
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585 } else { |
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586 THROW_MSG_(vmSymbols::java_lang_InternalError(), "unrecognized type", NULL); |
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587 } |
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588 } |
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589 |
710 | 590 // An unresolved member name is a mere symbolic reference. |
591 // Resolving it plants a vmtarget/vmindex in it, | |
592 // which refers dirctly to JVM internals. | |
593 void MethodHandles::resolve_MemberName(Handle mname, TRAPS) { | |
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594 assert(java_lang_invoke_MemberName::is_instance(mname()), ""); |
710 | 595 #ifdef ASSERT |
596 // If this assert throws, renegotiate the sentinel value used by the Java code, | |
597 // so that it is distinct from any valid vtable index value, and any special | |
598 // values defined in methodOopDesc::VtableIndexFlag. | |
599 // The point of the slop is to give the Java code and the JVM some room | |
600 // to independently specify sentinel values. | |
601 const int sentinel_slop = 10; | |
602 const int sentinel_limit = methodOopDesc::highest_unused_vtable_index_value - sentinel_slop; | |
603 assert(VM_INDEX_UNINITIALIZED < sentinel_limit, "Java sentinel != JVM sentinels"); | |
604 #endif | |
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605 if (java_lang_invoke_MemberName::vmindex(mname()) != VM_INDEX_UNINITIALIZED) |
710 | 606 return; // already resolved |
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607 Handle defc_oop(THREAD, java_lang_invoke_MemberName::clazz(mname())); |
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608 Handle name_str(THREAD, java_lang_invoke_MemberName::name( mname())); |
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609 Handle type_str(THREAD, java_lang_invoke_MemberName::type( mname())); |
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610 int flags = java_lang_invoke_MemberName::flags(mname()); |
710 | 611 |
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612 if (defc_oop.is_null() || name_str.is_null() || type_str.is_null()) { |
710 | 613 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), "nothing to resolve"); |
614 } | |
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615 |
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616 instanceKlassHandle defc; |
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617 { |
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618 klassOop defc_klassOop = java_lang_Class::as_klassOop(defc_oop()); |
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619 if (defc_klassOop == NULL) return; // a primitive; no resolution possible |
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620 if (!Klass::cast(defc_klassOop)->oop_is_instance()) { |
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621 if (!Klass::cast(defc_klassOop)->oop_is_array()) return; |
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622 defc_klassOop = SystemDictionary::Object_klass(); |
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623 } |
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624 defc = instanceKlassHandle(THREAD, defc_klassOop); |
710 | 625 } |
626 if (defc.is_null()) { | |
627 THROW_MSG(vmSymbols::java_lang_InternalError(), "primitive class"); | |
628 } | |
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629 defc->link_class(CHECK); // possible safepoint |
710 | 630 |
631 // convert the external string name to an internal symbol | |
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632 TempNewSymbol name = java_lang_String::as_symbol_or_null(name_str()); |
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633 if (name == NULL) return; // no such name |
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634 if (name == vmSymbols::class_initializer_name()) |
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635 return; // illegal name |
710 | 636 |
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637 Handle polymorphic_method_type; |
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638 bool polymorphic_signature = false; |
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639 if ((flags & ALL_KINDS) == IS_METHOD && |
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640 (defc() == SystemDictionary::MethodHandle_klass() && |
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641 methodOopDesc::is_method_handle_invoke_name(name))) { |
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642 polymorphic_signature = true; |
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643 } |
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644 |
710 | 645 // convert the external string or reflective type to an internal signature |
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646 TempNewSymbol type = convert_to_signature(type_str(), polymorphic_signature, CHECK); |
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647 if (java_lang_invoke_MethodType::is_instance(type_str()) && polymorphic_signature) { |
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648 polymorphic_method_type = type_str; // preserve exactly |
710 | 649 } |
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650 if (type == NULL) return; // no such signature exists in the VM |
710 | 651 |
652 // Time to do the lookup. | |
653 switch (flags & ALL_KINDS) { | |
654 case IS_METHOD: | |
655 { | |
656 CallInfo result; | |
657 { | |
658 EXCEPTION_MARK; | |
659 if ((flags & JVM_ACC_STATIC) != 0) { | |
660 LinkResolver::resolve_static_call(result, | |
661 defc, name, type, KlassHandle(), false, false, THREAD); | |
662 } else if (defc->is_interface()) { | |
663 LinkResolver::resolve_interface_call(result, Handle(), defc, | |
664 defc, name, type, KlassHandle(), false, false, THREAD); | |
665 } else { | |
666 LinkResolver::resolve_virtual_call(result, Handle(), defc, | |
667 defc, name, type, KlassHandle(), false, false, THREAD); | |
668 } | |
669 if (HAS_PENDING_EXCEPTION) { | |
670 CLEAR_PENDING_EXCEPTION; | |
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671 break; // go to second chance |
710 | 672 } |
673 } | |
674 methodHandle m = result.resolved_method(); | |
675 oop vmtarget = NULL; | |
676 int vmindex = methodOopDesc::nonvirtual_vtable_index; | |
677 if (defc->is_interface()) { | |
678 vmindex = klassItable::compute_itable_index(m()); | |
679 assert(vmindex >= 0, ""); | |
680 } else if (result.has_vtable_index()) { | |
681 vmindex = result.vtable_index(); | |
682 assert(vmindex >= 0, ""); | |
683 } | |
684 assert(vmindex != VM_INDEX_UNINITIALIZED, ""); | |
685 if (vmindex < 0) { | |
686 assert(result.is_statically_bound(), ""); | |
687 vmtarget = m(); | |
688 } else { | |
689 vmtarget = result.resolved_klass()->as_klassOop(); | |
690 } | |
691 int mods = (m->access_flags().as_short() & JVM_RECOGNIZED_METHOD_MODIFIERS); | |
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692 java_lang_invoke_MemberName::set_vmtarget(mname(), vmtarget); |
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693 java_lang_invoke_MemberName::set_vmindex(mname(), vmindex); |
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694 java_lang_invoke_MemberName::set_modifiers(mname(), mods); |
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695 DEBUG_ONLY(KlassHandle junk1; int junk2); |
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696 assert(decode_MemberName(mname(), junk1, junk2) == result.resolved_method(), |
710 | 697 "properly stored for later decoding"); |
698 return; | |
699 } | |
700 case IS_CONSTRUCTOR: | |
701 { | |
702 CallInfo result; | |
703 { | |
704 EXCEPTION_MARK; | |
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705 if (name == vmSymbols::object_initializer_name()) { |
710 | 706 LinkResolver::resolve_special_call(result, |
707 defc, name, type, KlassHandle(), false, THREAD); | |
708 } else { | |
709 break; // will throw after end of switch | |
710 } | |
711 if (HAS_PENDING_EXCEPTION) { | |
712 CLEAR_PENDING_EXCEPTION; | |
713 return; | |
714 } | |
715 } | |
716 assert(result.is_statically_bound(), ""); | |
717 methodHandle m = result.resolved_method(); | |
718 oop vmtarget = m(); | |
719 int vmindex = methodOopDesc::nonvirtual_vtable_index; | |
720 int mods = (m->access_flags().as_short() & JVM_RECOGNIZED_METHOD_MODIFIERS); | |
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721 java_lang_invoke_MemberName::set_vmtarget(mname(), vmtarget); |
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722 java_lang_invoke_MemberName::set_vmindex(mname(), vmindex); |
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723 java_lang_invoke_MemberName::set_modifiers(mname(), mods); |
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724 DEBUG_ONLY(KlassHandle junk1; int junk2); |
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725 assert(decode_MemberName(mname(), junk1, junk2) == result.resolved_method(), |
710 | 726 "properly stored for later decoding"); |
727 return; | |
728 } | |
729 case IS_FIELD: | |
730 { | |
731 // This is taken from LinkResolver::resolve_field, sans access checks. | |
732 fieldDescriptor fd; // find_field initializes fd if found | |
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733 KlassHandle sel_klass(THREAD, instanceKlass::cast(defc())->find_field(name, type, &fd)); |
710 | 734 // check if field exists; i.e., if a klass containing the field def has been selected |
735 if (sel_klass.is_null()) return; | |
736 oop vmtarget = sel_klass->as_klassOop(); | |
737 int vmindex = fd.offset(); | |
738 int mods = (fd.access_flags().as_short() & JVM_RECOGNIZED_FIELD_MODIFIERS); | |
739 if (vmindex == VM_INDEX_UNINITIALIZED) break; // should not happen | |
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740 java_lang_invoke_MemberName::set_vmtarget(mname(), vmtarget); |
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741 java_lang_invoke_MemberName::set_vmindex(mname(), vmindex); |
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742 java_lang_invoke_MemberName::set_modifiers(mname(), mods); |
710 | 743 return; |
744 } | |
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745 default: |
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746 THROW_MSG(vmSymbols::java_lang_InternalError(), "unrecognized MemberName format"); |
710 | 747 } |
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748 |
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749 // Second chance. |
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750 if (polymorphic_method_type.not_null()) { |
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751 // Look on a non-null class loader. |
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752 Handle cur_class_loader; |
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753 const int nptypes = java_lang_invoke_MethodType::ptype_count(polymorphic_method_type()); |
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754 for (int i = 0; i <= nptypes; i++) { |
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755 oop type_mirror; |
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756 if (i < nptypes) type_mirror = java_lang_invoke_MethodType::ptype(polymorphic_method_type(), i); |
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757 else type_mirror = java_lang_invoke_MethodType::rtype(polymorphic_method_type()); |
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758 klassOop example_type = java_lang_Class::as_klassOop(type_mirror); |
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759 if (example_type == NULL) continue; |
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760 oop class_loader = Klass::cast(example_type)->class_loader(); |
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761 if (class_loader == NULL || class_loader == cur_class_loader()) continue; |
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762 cur_class_loader = Handle(THREAD, class_loader); |
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763 methodOop m = SystemDictionary::find_method_handle_invoke(name, |
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764 type, |
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765 KlassHandle(THREAD, example_type), |
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766 THREAD); |
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767 if (HAS_PENDING_EXCEPTION) { |
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768 CLEAR_PENDING_EXCEPTION; |
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769 m = NULL; |
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770 // try again with a different class loader... |
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771 } |
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772 if (m != NULL && |
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773 m->is_method_handle_invoke() && |
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774 java_lang_invoke_MethodType::equals(polymorphic_method_type(), m->method_handle_type())) { |
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775 int mods = (m->access_flags().as_short() & JVM_RECOGNIZED_METHOD_MODIFIERS); |
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776 java_lang_invoke_MemberName::set_vmtarget(mname(), m); |
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777 java_lang_invoke_MemberName::set_vmindex(mname(), m->vtable_index()); |
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778 java_lang_invoke_MemberName::set_modifiers(mname(), mods); |
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779 return; |
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780 } |
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781 } |
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782 } |
710 | 783 } |
784 | |
785 // Conversely, a member name which is only initialized from JVM internals | |
786 // may have null defc, name, and type fields. | |
787 // Resolving it plants a vmtarget/vmindex in it, | |
788 // which refers directly to JVM internals. | |
789 void MethodHandles::expand_MemberName(Handle mname, int suppress, TRAPS) { | |
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790 assert(java_lang_invoke_MemberName::is_instance(mname()), ""); |
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791 oop vmtarget = java_lang_invoke_MemberName::vmtarget(mname()); |
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792 int vmindex = java_lang_invoke_MemberName::vmindex(mname()); |
710 | 793 if (vmtarget == NULL || vmindex == VM_INDEX_UNINITIALIZED) { |
794 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), "nothing to expand"); | |
795 } | |
796 | |
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797 bool have_defc = (java_lang_invoke_MemberName::clazz(mname()) != NULL); |
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798 bool have_name = (java_lang_invoke_MemberName::name(mname()) != NULL); |
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799 bool have_type = (java_lang_invoke_MemberName::type(mname()) != NULL); |
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800 int flags = java_lang_invoke_MemberName::flags(mname()); |
710 | 801 |
802 if (suppress != 0) { | |
803 if (suppress & _suppress_defc) have_defc = true; | |
804 if (suppress & _suppress_name) have_name = true; | |
805 if (suppress & _suppress_type) have_type = true; | |
806 } | |
807 | |
808 if (have_defc && have_name && have_type) return; // nothing needed | |
809 | |
810 switch (flags & ALL_KINDS) { | |
811 case IS_METHOD: | |
812 case IS_CONSTRUCTOR: | |
813 { | |
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814 KlassHandle receiver_limit; int decode_flags = 0; |
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815 methodHandle m = decode_vmtarget(vmtarget, vmindex, NULL, receiver_limit, decode_flags); |
710 | 816 if (m.is_null()) break; |
817 if (!have_defc) { | |
818 klassOop defc = m->method_holder(); | |
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819 if (receiver_limit.not_null() && receiver_limit() != defc |
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820 && Klass::cast(receiver_limit())->is_subtype_of(defc)) |
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821 defc = receiver_limit(); |
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822 java_lang_invoke_MemberName::set_clazz(mname(), Klass::cast(defc)->java_mirror()); |
710 | 823 } |
824 if (!have_name) { | |
825 //not java_lang_String::create_from_symbol; let's intern member names | |
826 Handle name = StringTable::intern(m->name(), CHECK); | |
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827 java_lang_invoke_MemberName::set_name(mname(), name()); |
710 | 828 } |
829 if (!have_type) { | |
830 Handle type = java_lang_String::create_from_symbol(m->signature(), CHECK); | |
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831 java_lang_invoke_MemberName::set_type(mname(), type()); |
710 | 832 } |
833 return; | |
834 } | |
835 case IS_FIELD: | |
836 { | |
837 // This is taken from LinkResolver::resolve_field, sans access checks. | |
838 if (!vmtarget->is_klass()) break; | |
839 if (!Klass::cast((klassOop) vmtarget)->oop_is_instance()) break; | |
840 instanceKlassHandle defc(THREAD, (klassOop) vmtarget); | |
841 bool is_static = ((flags & JVM_ACC_STATIC) != 0); | |
842 fieldDescriptor fd; // find_field initializes fd if found | |
843 if (!defc->find_field_from_offset(vmindex, is_static, &fd)) | |
844 break; // cannot expand | |
845 if (!have_defc) { | |
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846 java_lang_invoke_MemberName::set_clazz(mname(), defc->java_mirror()); |
710 | 847 } |
848 if (!have_name) { | |
849 //not java_lang_String::create_from_symbol; let's intern member names | |
850 Handle name = StringTable::intern(fd.name(), CHECK); | |
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851 java_lang_invoke_MemberName::set_name(mname(), name()); |
710 | 852 } |
853 if (!have_type) { | |
854 Handle type = java_lang_String::create_from_symbol(fd.signature(), CHECK); | |
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855 java_lang_invoke_MemberName::set_type(mname(), type()); |
710 | 856 } |
857 return; | |
858 } | |
859 } | |
860 THROW_MSG(vmSymbols::java_lang_InternalError(), "unrecognized MemberName format"); | |
861 } | |
862 | |
863 int MethodHandles::find_MemberNames(klassOop k, | |
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864 Symbol* name, Symbol* sig, |
710 | 865 int mflags, klassOop caller, |
866 int skip, objArrayOop results) { | |
867 DEBUG_ONLY(No_Safepoint_Verifier nsv); | |
868 // this code contains no safepoints! | |
869 | |
870 // %%% take caller into account! | |
871 | |
872 if (k == NULL || !Klass::cast(k)->oop_is_instance()) return -1; | |
873 | |
874 int rfill = 0, rlimit = results->length(), rskip = skip; | |
875 // overflow measurement: | |
876 int overflow = 0, overflow_limit = MAX2(1000, rlimit); | |
877 | |
878 int match_flags = mflags; | |
879 bool search_superc = ((match_flags & SEARCH_SUPERCLASSES) != 0); | |
880 bool search_intfc = ((match_flags & SEARCH_INTERFACES) != 0); | |
881 bool local_only = !(search_superc | search_intfc); | |
882 bool classes_only = false; | |
883 | |
884 if (name != NULL) { | |
885 if (name->utf8_length() == 0) return 0; // a match is not possible | |
886 } | |
887 if (sig != NULL) { | |
888 if (sig->utf8_length() == 0) return 0; // a match is not possible | |
889 if (sig->byte_at(0) == '(') | |
890 match_flags &= ~(IS_FIELD | IS_TYPE); | |
891 else | |
892 match_flags &= ~(IS_CONSTRUCTOR | IS_METHOD); | |
893 } | |
894 | |
895 if ((match_flags & IS_TYPE) != 0) { | |
896 // NYI, and Core Reflection works quite well for this query | |
897 } | |
898 | |
899 if ((match_flags & IS_FIELD) != 0) { | |
900 for (FieldStream st(k, local_only, !search_intfc); !st.eos(); st.next()) { | |
901 if (name != NULL && st.name() != name) | |
902 continue; | |
903 if (sig != NULL && st.signature() != sig) | |
904 continue; | |
905 // passed the filters | |
906 if (rskip > 0) { | |
907 --rskip; | |
908 } else if (rfill < rlimit) { | |
909 oop result = results->obj_at(rfill++); | |
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910 if (!java_lang_invoke_MemberName::is_instance(result)) |
710 | 911 return -99; // caller bug! |
912 MethodHandles::init_MemberName(result, st.klass()->as_klassOop(), st.access_flags(), st.offset()); | |
913 } else if (++overflow >= overflow_limit) { | |
914 match_flags = 0; break; // got tired of looking at overflow | |
915 } | |
916 } | |
917 } | |
918 | |
919 if ((match_flags & (IS_METHOD | IS_CONSTRUCTOR)) != 0) { | |
920 // watch out for these guys: | |
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921 Symbol* init_name = vmSymbols::object_initializer_name(); |
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922 Symbol* clinit_name = vmSymbols::class_initializer_name(); |
710 | 923 if (name == clinit_name) clinit_name = NULL; // hack for exposing <clinit> |
924 bool negate_name_test = false; | |
925 // fix name so that it captures the intention of IS_CONSTRUCTOR | |
926 if (!(match_flags & IS_METHOD)) { | |
927 // constructors only | |
928 if (name == NULL) { | |
929 name = init_name; | |
930 } else if (name != init_name) { | |
931 return 0; // no constructors of this method name | |
932 } | |
933 } else if (!(match_flags & IS_CONSTRUCTOR)) { | |
934 // methods only | |
935 if (name == NULL) { | |
936 name = init_name; | |
937 negate_name_test = true; // if we see the name, we *omit* the entry | |
938 } else if (name == init_name) { | |
939 return 0; // no methods of this constructor name | |
940 } | |
941 } else { | |
942 // caller will accept either sort; no need to adjust name | |
943 } | |
944 for (MethodStream st(k, local_only, !search_intfc); !st.eos(); st.next()) { | |
945 methodOop m = st.method(); | |
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946 Symbol* m_name = m->name(); |
710 | 947 if (m_name == clinit_name) |
948 continue; | |
949 if (name != NULL && ((m_name != name) ^ negate_name_test)) | |
950 continue; | |
951 if (sig != NULL && m->signature() != sig) | |
952 continue; | |
953 // passed the filters | |
954 if (rskip > 0) { | |
955 --rskip; | |
956 } else if (rfill < rlimit) { | |
957 oop result = results->obj_at(rfill++); | |
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958 if (!java_lang_invoke_MemberName::is_instance(result)) |
710 | 959 return -99; // caller bug! |
960 MethodHandles::init_MemberName(result, m, true); | |
961 } else if (++overflow >= overflow_limit) { | |
962 match_flags = 0; break; // got tired of looking at overflow | |
963 } | |
964 } | |
965 } | |
966 | |
967 // return number of elements we at leasted wanted to initialize | |
968 return rfill + overflow; | |
969 } | |
970 | |
971 | |
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972 // Decode this java.lang.Class object into an instanceKlass, if possible. |
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973 // Throw IAE if not |
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974 instanceKlassHandle MethodHandles::resolve_instance_klass(oop java_mirror_oop, TRAPS) { |
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975 instanceKlassHandle empty; |
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976 klassOop caller = NULL; |
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977 if (java_lang_Class::is_instance(java_mirror_oop)) { |
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978 caller = java_lang_Class::as_klassOop(java_mirror_oop); |
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979 } |
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980 if (caller == NULL || !Klass::cast(caller)->oop_is_instance()) { |
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981 THROW_MSG_(vmSymbols::java_lang_IllegalArgumentException(), "not a class", empty); |
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982 } |
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983 return instanceKlassHandle(THREAD, caller); |
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984 } |
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985 |
710 | 986 |
987 | |
988 // Decode the vmtarget field of a method handle. | |
989 // Sanitize out methodOops, klassOops, and any other non-Java data. | |
990 // This is for debugging and reflection. | |
991 oop MethodHandles::encode_target(Handle mh, int format, TRAPS) { | |
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992 assert(java_lang_invoke_MethodHandle::is_instance(mh()), "must be a MH"); |
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993 if (format == ETF_FORCE_DIRECT_HANDLE || |
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994 format == ETF_COMPILE_DIRECT_HANDLE) { |
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995 // Internal function for stress testing. |
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996 Handle mt = java_lang_invoke_MethodHandle::type(mh()); |
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997 int invocation_count = 10000; |
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998 TempNewSymbol signature = java_lang_invoke_MethodType::as_signature(mt(), true, CHECK_NULL); |
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999 bool omit_receiver_argument = true; |
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1000 MethodHandleCompiler mhc(mh, vmSymbols::invoke_name(), signature, invocation_count, omit_receiver_argument, CHECK_NULL); |
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1001 methodHandle m = mhc.compile(CHECK_NULL); |
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1002 if (StressMethodHandleWalk && Verbose || PrintMiscellaneous) { |
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1003 tty->print_cr("MethodHandleNatives.getTarget(%s)", |
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1004 format == ETF_FORCE_DIRECT_HANDLE ? "FORCE_DIRECT" : "COMPILE_DIRECT"); |
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1005 if (Verbose) { |
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1006 m->print_codes(); |
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1007 } |
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1008 } |
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1009 if (StressMethodHandleWalk) { |
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1010 InterpreterOopMap mask; |
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1011 OopMapCache::compute_one_oop_map(m, m->code_size() - 1, &mask); |
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1012 } |
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1013 if ((format == ETF_COMPILE_DIRECT_HANDLE || |
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1014 CompilationPolicy::must_be_compiled(m)) |
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1015 && !instanceKlass::cast(m->method_holder())->is_not_initialized() |
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1016 && CompilationPolicy::can_be_compiled(m)) { |
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1017 // Force compilation |
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1018 CompileBroker::compile_method(m, InvocationEntryBci, |
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1019 CompLevel_initial_compile, |
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1020 methodHandle(), 0, "MethodHandleNatives.getTarget", |
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1021 CHECK_NULL); |
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1022 } |
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1023 // Now wrap m in a DirectMethodHandle. |
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1024 instanceKlassHandle dmh_klass(THREAD, SystemDictionary::DirectMethodHandle_klass()); |
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1025 Handle dmh = dmh_klass->allocate_instance_handle(CHECK_NULL); |
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1026 JavaValue ignore_result(T_VOID); |
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1027 Symbol* init_name = vmSymbols::object_initializer_name(); |
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1028 Symbol* init_sig = vmSymbols::notifyGenericMethodType_signature(); |
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1029 JavaCalls::call_special(&ignore_result, dmh, |
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1030 SystemDictionaryHandles::MethodHandle_klass(), init_name, init_sig, |
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1031 java_lang_invoke_MethodHandle::type(mh()), CHECK_NULL); |
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1032 MethodHandles::init_DirectMethodHandle(dmh, m, false, CHECK_NULL); |
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1033 return dmh(); |
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1034 } |
710 | 1035 if (format == ETF_HANDLE_OR_METHOD_NAME) { |
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1036 oop target = java_lang_invoke_MethodHandle::vmtarget(mh()); |
710 | 1037 if (target == NULL) { |
1038 return NULL; // unformed MH | |
1039 } | |
1040 klassOop tklass = target->klass(); | |
1142 | 1041 if (Klass::cast(tklass)->is_subclass_of(SystemDictionary::Object_klass())) { |
710 | 1042 return target; // target is another MH (or something else?) |
1043 } | |
1044 } | |
1045 if (format == ETF_DIRECT_HANDLE) { | |
1046 oop target = mh(); | |
1047 for (;;) { | |
1048 if (target->klass() == SystemDictionary::DirectMethodHandle_klass()) { | |
1049 return target; | |
1050 } | |
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1051 if (!java_lang_invoke_MethodHandle::is_instance(target)){ |
710 | 1052 return NULL; // unformed MH |
1053 } | |
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1054 target = java_lang_invoke_MethodHandle::vmtarget(target); |
710 | 1055 } |
1056 } | |
1057 // cases of metadata in MH.vmtarget: | |
1058 // - AMH can have methodOop for static invoke with bound receiver | |
1059 // - DMH can have methodOop for static invoke (on variable receiver) | |
1060 // - DMH can have klassOop for dispatched (non-static) invoke | |
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1061 KlassHandle receiver_limit; int decode_flags = 0; |
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1062 methodHandle m = decode_MethodHandle(mh(), receiver_limit, decode_flags); |
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1063 if (m.is_null()) return NULL; |
710 | 1064 switch (format) { |
1065 case ETF_REFLECT_METHOD: | |
1066 // same as jni_ToReflectedMethod: | |
1067 if (m->is_initializer()) { | |
1068 return Reflection::new_constructor(m, THREAD); | |
1069 } else { | |
1070 return Reflection::new_method(m, UseNewReflection, false, THREAD); | |
1071 } | |
1072 | |
1073 case ETF_HANDLE_OR_METHOD_NAME: // method, not handle | |
1074 case ETF_METHOD_NAME: | |
1075 { | |
1076 if (SystemDictionary::MemberName_klass() == NULL) break; | |
1077 instanceKlassHandle mname_klass(THREAD, SystemDictionary::MemberName_klass()); | |
1078 mname_klass->initialize(CHECK_NULL); | |
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1079 Handle mname = mname_klass->allocate_instance_handle(CHECK_NULL); // possible safepoint |
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1080 java_lang_invoke_MemberName::set_vmindex(mname(), VM_INDEX_UNINITIALIZED); |
710 | 1081 bool do_dispatch = ((decode_flags & MethodHandles::_dmf_does_dispatch) != 0); |
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1082 init_MemberName(mname(), m(), do_dispatch); |
710 | 1083 expand_MemberName(mname, 0, CHECK_NULL); |
1084 return mname(); | |
1085 } | |
1086 } | |
1087 | |
1088 // Unknown format code. | |
1089 char msg[50]; | |
1090 jio_snprintf(msg, sizeof(msg), "unknown getTarget format=%d", format); | |
1091 THROW_MSG_NULL(vmSymbols::java_lang_IllegalArgumentException(), msg); | |
1092 } | |
1093 | |
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1094 static const char* always_null_names[] = { |
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1095 "java/lang/Void", |
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1096 "java/lang/Null", |
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1097 //"java/lang/Nothing", |
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1098 "sun/dyn/empty/Empty", |
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1099 "sun/invoke/empty/Empty", |
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1100 NULL |
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1101 }; |
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1102 |
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1103 static bool is_always_null_type(klassOop klass) { |
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1104 if (klass == NULL) return false; // safety |
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1105 if (!Klass::cast(klass)->oop_is_instance()) return false; |
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1106 instanceKlass* ik = instanceKlass::cast(klass); |
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1107 // Must be on the boot class path: |
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1108 if (ik->class_loader() != NULL) return false; |
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1109 // Check the name. |
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1110 Symbol* name = ik->name(); |
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1111 for (int i = 0; ; i++) { |
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1112 const char* test_name = always_null_names[i]; |
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1113 if (test_name == NULL) break; |
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1114 if (name->equals(test_name)) |
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1115 return true; |
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1116 } |
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1117 return false; |
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1118 } |
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1119 |
710 | 1120 bool MethodHandles::class_cast_needed(klassOop src, klassOop dst) { |
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1121 if (dst == NULL) return true; |
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1122 if (src == NULL) return (dst != SystemDictionary::Object_klass()); |
1142 | 1123 if (src == dst || dst == SystemDictionary::Object_klass()) |
710 | 1124 return false; // quickest checks |
1125 Klass* srck = Klass::cast(src); | |
1126 Klass* dstk = Klass::cast(dst); | |
1127 if (dstk->is_interface()) { | |
1128 // interface receivers can safely be viewed as untyped, | |
1129 // because interface calls always include a dynamic check | |
1142 | 1130 //dstk = Klass::cast(SystemDictionary::Object_klass()); |
710 | 1131 return false; |
1132 } | |
1133 if (srck->is_interface()) { | |
1134 // interface arguments must be viewed as untyped | |
1142 | 1135 //srck = Klass::cast(SystemDictionary::Object_klass()); |
710 | 1136 return true; |
1137 } | |
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1138 if (is_always_null_type(src)) { |
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1139 // some source types are known to be never instantiated; |
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1140 // they represent references which are always null |
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1141 // such null references never fail to convert safely |
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1142 return false; |
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1143 } |
710 | 1144 return !srck->is_subclass_of(dstk->as_klassOop()); |
1145 } | |
1146 | |
1147 static oop object_java_mirror() { | |
1142 | 1148 return Klass::cast(SystemDictionary::Object_klass())->java_mirror(); |
710 | 1149 } |
1150 | |
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1151 bool MethodHandles::is_float_fixed_reinterpretation_cast(BasicType src, BasicType dst) { |
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1152 if (src == T_FLOAT) return dst == T_INT; |
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1153 if (src == T_INT) return dst == T_FLOAT; |
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1154 if (src == T_DOUBLE) return dst == T_LONG; |
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1155 if (src == T_LONG) return dst == T_DOUBLE; |
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1156 return false; |
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1157 } |
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1158 |
710 | 1159 bool MethodHandles::same_basic_type_for_arguments(BasicType src, |
1160 BasicType dst, | |
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1161 bool raw, |
710 | 1162 bool for_return) { |
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1163 if (for_return) { |
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1164 // return values can always be forgotten: |
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1165 if (dst == T_VOID) return true; |
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1166 if (src == T_VOID) return raw && (dst == T_INT); |
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1167 // We allow caller to receive a garbage int, which is harmless. |
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1168 // This trick is pulled by trusted code (see VerifyType.canPassRaw). |
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1169 } |
710 | 1170 assert(src != T_VOID && dst != T_VOID, "should not be here"); |
1171 if (src == dst) return true; | |
1172 if (type2size[src] != type2size[dst]) return false; | |
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1173 if (src == T_OBJECT || dst == T_OBJECT) return false; |
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1174 if (raw) return true; // bitwise reinterpretation; caller guarantees safety |
710 | 1175 // allow reinterpretation casts for integral widening |
1176 if (is_subword_type(src)) { // subwords can fit in int or other subwords | |
1177 if (dst == T_INT) // any subword fits in an int | |
1178 return true; | |
1179 if (src == T_BOOLEAN) // boolean fits in any subword | |
1180 return is_subword_type(dst); | |
1181 if (src == T_BYTE && dst == T_SHORT) | |
1182 return true; // remaining case: byte fits in short | |
1183 } | |
1184 // allow float/fixed reinterpretation casts | |
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1185 if (is_float_fixed_reinterpretation_cast(src, dst)) |
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1186 return true; |
710 | 1187 return false; |
1188 } | |
1189 | |
1190 const char* MethodHandles::check_method_receiver(methodOop m, | |
1191 klassOop passed_recv_type) { | |
1192 assert(!m->is_static(), "caller resp."); | |
1193 if (passed_recv_type == NULL) | |
1194 return "receiver type is primitive"; | |
1195 if (class_cast_needed(passed_recv_type, m->method_holder())) { | |
1196 Klass* formal = Klass::cast(m->method_holder()); | |
1197 return SharedRuntime::generate_class_cast_message("receiver type", | |
1198 formal->external_name()); | |
1199 } | |
1200 return NULL; // checks passed | |
1201 } | |
1202 | |
1203 // Verify that m's signature can be called type-safely by a method handle | |
1204 // of the given method type 'mtype'. | |
1205 // It takes a TRAPS argument because it must perform symbol lookups. | |
1206 void MethodHandles::verify_method_signature(methodHandle m, | |
1207 Handle mtype, | |
1208 int first_ptype_pos, | |
1209 KlassHandle insert_ptype, | |
1210 TRAPS) { | |
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1211 Handle mhi_type; |
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1212 if (m->is_method_handle_invoke()) { |
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1213 // use this more exact typing instead of the symbolic signature: |
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1214 mhi_type = Handle(THREAD, m->method_handle_type()); |
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1215 } |
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1216 objArrayHandle ptypes(THREAD, java_lang_invoke_MethodType::ptypes(mtype())); |
710 | 1217 int pnum = first_ptype_pos; |
1218 int pmax = ptypes->length(); | |
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1219 int anum = 0; // method argument |
710 | 1220 const char* err = NULL; |
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1221 ResourceMark rm(THREAD); |
710 | 1222 for (SignatureStream ss(m->signature()); !ss.is_done(); ss.next()) { |
1223 oop ptype_oop = NULL; | |
1224 if (ss.at_return_type()) { | |
1225 if (pnum != pmax) | |
1226 { err = "too many arguments"; break; } | |
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1227 ptype_oop = java_lang_invoke_MethodType::rtype(mtype()); |
710 | 1228 } else { |
1229 if (pnum >= pmax) | |
1230 { err = "not enough arguments"; break; } | |
1231 if (pnum >= 0) | |
1232 ptype_oop = ptypes->obj_at(pnum); | |
1233 else if (insert_ptype.is_null()) | |
1234 ptype_oop = NULL; | |
1235 else | |
1236 ptype_oop = insert_ptype->java_mirror(); | |
1237 pnum += 1; | |
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1238 anum += 1; |
710 | 1239 } |
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1240 KlassHandle pklass; |
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1241 BasicType ptype = T_OBJECT; |
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1242 bool have_ptype = false; |
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1243 // missing ptype_oop does not match any non-reference; use Object to report the error |
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1244 pklass = SystemDictionaryHandles::Object_klass(); |
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1245 if (ptype_oop != NULL) { |
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1246 have_ptype = true; |
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1247 klassOop pklass_oop = NULL; |
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1248 ptype = java_lang_Class::as_BasicType(ptype_oop, &pklass_oop); |
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1249 pklass = KlassHandle(THREAD, pklass_oop); |
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1250 } |
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1251 ptype_oop = NULL; //done with this |
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1252 KlassHandle aklass; |
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1253 BasicType atype = ss.type(); |
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1254 if (atype == T_ARRAY) atype = T_OBJECT; // fold all refs to T_OBJECT |
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1255 if (atype == T_OBJECT) { |
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1256 if (!have_ptype) { |
710 | 1257 // null matches any reference |
1258 continue; | |
1259 } | |
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1260 if (mhi_type.is_null()) { |
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1261 // If we fail to resolve types at this point, we will usually throw an error. |
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1262 TempNewSymbol name = ss.as_symbol_or_null(); |
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1263 if (name != NULL) { |
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1264 instanceKlass* mk = instanceKlass::cast(m->method_holder()); |
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1265 Handle loader(THREAD, mk->class_loader()); |
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1266 Handle domain(THREAD, mk->protection_domain()); |
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1267 klassOop aklass_oop = SystemDictionary::resolve_or_null(name, loader, domain, CHECK); |
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1268 if (aklass_oop != NULL) |
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1269 aklass = KlassHandle(THREAD, aklass_oop); |
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1270 if (aklass.is_null() && |
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1271 pklass.not_null() && |
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1272 loader.is_null() && |
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1273 pklass->name() == name) |
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1274 // accept name equivalence here, since that's the best we can do |
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1275 aklass = pklass; |
2478
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1276 } |
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1277 } else { |
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1278 // for method handle invokers we don't look at the name in the signature |
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1279 oop atype_oop; |
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1280 if (ss.at_return_type()) |
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1281 atype_oop = java_lang_invoke_MethodType::rtype(mhi_type()); |
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1282 else |
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1283 atype_oop = java_lang_invoke_MethodType::ptype(mhi_type(), anum-1); |
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1284 klassOop aklass_oop = NULL; |
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1285 atype = java_lang_Class::as_BasicType(atype_oop, &aklass_oop); |
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1286 aklass = KlassHandle(THREAD, aklass_oop); |
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1287 } |
710 | 1288 } |
1289 if (!ss.at_return_type()) { | |
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1290 err = check_argument_type_change(ptype, pklass(), atype, aklass(), anum); |
710 | 1291 } else { |
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1292 err = check_return_type_change(atype, aklass(), ptype, pklass()); // note reversal! |
710 | 1293 } |
1294 if (err != NULL) break; | |
1295 } | |
1296 | |
1297 if (err != NULL) { | |
2478
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1298 #ifndef PRODUCT |
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1299 if (PrintMiscellaneous && (Verbose || WizardMode)) { |
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1300 tty->print("*** verify_method_signature failed: "); |
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1301 java_lang_invoke_MethodType::print_signature(mtype(), tty); |
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1302 tty->cr(); |
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1303 tty->print_cr(" first_ptype_pos = %d, insert_ptype = "UINTX_FORMAT, first_ptype_pos, insert_ptype()); |
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1304 tty->print(" Failing method: "); |
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1305 m->print(); |
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1306 } |
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1307 #endif //PRODUCT |
710 | 1308 THROW_MSG(vmSymbols::java_lang_InternalError(), err); |
1309 } | |
1310 } | |
1311 | |
1312 // Main routine for verifying the MethodHandle.type of a proposed | |
1313 // direct or bound-direct method handle. | |
1314 void MethodHandles::verify_method_type(methodHandle m, | |
1315 Handle mtype, | |
1316 bool has_bound_recv, | |
1317 KlassHandle bound_recv_type, | |
1318 TRAPS) { | |
1319 bool m_needs_receiver = !m->is_static(); | |
1320 | |
1321 const char* err = NULL; | |
1322 | |
1323 int first_ptype_pos = m_needs_receiver ? 1 : 0; | |
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1324 if (has_bound_recv) { |
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1325 first_ptype_pos -= 1; // ptypes do not include the bound argument; start earlier in them |
710 | 1326 if (m_needs_receiver && bound_recv_type.is_null()) |
1327 { err = "bound receiver is not an object"; goto die; } | |
1328 } | |
1329 | |
1330 if (m_needs_receiver && err == NULL) { | |
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1331 objArrayOop ptypes = java_lang_invoke_MethodType::ptypes(mtype()); |
710 | 1332 if (ptypes->length() < first_ptype_pos) |
1333 { err = "receiver argument is missing"; goto die; } | |
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1334 if (has_bound_recv) |
710 | 1335 err = check_method_receiver(m(), bound_recv_type->as_klassOop()); |
1336 else | |
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1337 err = check_method_receiver(m(), java_lang_Class::as_klassOop(ptypes->obj_at(first_ptype_pos-1))); |
710 | 1338 if (err != NULL) goto die; |
1339 } | |
1340 | |
1341 // Check the other arguments for mistypes. | |
1342 verify_method_signature(m, mtype, first_ptype_pos, bound_recv_type, CHECK); | |
1343 return; | |
1344 | |
1345 die: | |
1346 THROW_MSG(vmSymbols::java_lang_InternalError(), err); | |
1347 } | |
1348 | |
1349 void MethodHandles::verify_vmslots(Handle mh, TRAPS) { | |
1350 // Verify vmslots. | |
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1351 int check_slots = argument_slot_count(java_lang_invoke_MethodHandle::type(mh())); |
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1352 if (java_lang_invoke_MethodHandle::vmslots(mh()) != check_slots) { |
710 | 1353 THROW_MSG(vmSymbols::java_lang_InternalError(), "bad vmslots in BMH"); |
1354 } | |
1355 } | |
1356 | |
1357 void MethodHandles::verify_vmargslot(Handle mh, int argnum, int argslot, TRAPS) { | |
1358 // Verify that argslot points at the given argnum. | |
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1359 int check_slot = argument_slot(java_lang_invoke_MethodHandle::type(mh()), argnum); |
710 | 1360 if (argslot != check_slot || argslot < 0) { |
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1361 ResourceMark rm; |
710 | 1362 const char* fmt = "for argnum of %d, vmargslot is %d, should be %d"; |
1363 size_t msglen = strlen(fmt) + 3*11 + 1; | |
1364 char* msg = NEW_RESOURCE_ARRAY(char, msglen); | |
1365 jio_snprintf(msg, msglen, fmt, argnum, argslot, check_slot); | |
1366 THROW_MSG(vmSymbols::java_lang_InternalError(), msg); | |
1367 } | |
1368 } | |
1369 | |
1370 // Verify the correspondence between two method types. | |
1371 // Apart from the advertised changes, caller method type X must | |
1372 // be able to invoke the callee method Y type with no violations | |
1373 // of type integrity. | |
1374 // Return NULL if all is well, else a short error message. | |
1375 const char* MethodHandles::check_method_type_change(oop src_mtype, int src_beg, int src_end, | |
1376 int insert_argnum, oop insert_type, | |
1377 int change_argnum, oop change_type, | |
1378 int delete_argnum, | |
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1379 oop dst_mtype, int dst_beg, int dst_end, |
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1380 bool raw) { |
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1381 objArrayOop src_ptypes = java_lang_invoke_MethodType::ptypes(src_mtype); |
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1382 objArrayOop dst_ptypes = java_lang_invoke_MethodType::ptypes(dst_mtype); |
710 | 1383 |
1384 int src_max = src_ptypes->length(); | |
1385 int dst_max = dst_ptypes->length(); | |
1386 | |
1387 if (src_end == -1) src_end = src_max; | |
1388 if (dst_end == -1) dst_end = dst_max; | |
1389 | |
1390 assert(0 <= src_beg && src_beg <= src_end && src_end <= src_max, "oob"); | |
1391 assert(0 <= dst_beg && dst_beg <= dst_end && dst_end <= dst_max, "oob"); | |
1392 | |
1393 // pending actions; set to -1 when done: | |
1394 int ins_idx = insert_argnum, chg_idx = change_argnum, del_idx = delete_argnum; | |
1395 | |
1396 const char* err = NULL; | |
1397 | |
1398 // Walk along each array of parameter types, including a virtual | |
1399 // NULL end marker at the end of each. | |
1400 for (int src_idx = src_beg, dst_idx = dst_beg; | |
1401 (src_idx <= src_end && dst_idx <= dst_end); | |
1402 src_idx++, dst_idx++) { | |
1403 oop src_type = (src_idx == src_end) ? oop(NULL) : src_ptypes->obj_at(src_idx); | |
1404 oop dst_type = (dst_idx == dst_end) ? oop(NULL) : dst_ptypes->obj_at(dst_idx); | |
1405 bool fix_null_src_type = false; | |
1406 | |
1407 // Perform requested edits. | |
1408 if (ins_idx == src_idx) { | |
1409 // note that the inserted guy is never affected by a change or deletion | |
1410 ins_idx = -1; | |
1411 src_type = insert_type; | |
1412 fix_null_src_type = true; | |
1413 --src_idx; // back up to process src type on next loop | |
1414 src_idx = src_end; | |
1415 } else { | |
1416 // note that the changed guy can be immediately deleted | |
1417 if (chg_idx == src_idx) { | |
1418 chg_idx = -1; | |
1419 assert(src_idx < src_end, "oob"); | |
1420 src_type = change_type; | |
1421 fix_null_src_type = true; | |
1422 } | |
1423 if (del_idx == src_idx) { | |
1424 del_idx = -1; | |
1425 assert(src_idx < src_end, "oob"); | |
1426 --dst_idx; | |
1427 continue; // rerun loop after skipping this position | |
1428 } | |
1429 } | |
1430 | |
1431 if (src_type == NULL && fix_null_src_type) | |
1432 // explicit null in this case matches any dest reference | |
1433 src_type = (java_lang_Class::is_primitive(dst_type) ? object_java_mirror() : dst_type); | |
1434 | |
1435 // Compare the two argument types. | |
1436 if (src_type != dst_type) { | |
1437 if (src_type == NULL) return "not enough arguments"; | |
1438 if (dst_type == NULL) return "too many arguments"; | |
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1439 err = check_argument_type_change(src_type, dst_type, dst_idx, raw); |
710 | 1440 if (err != NULL) return err; |
1441 } | |
1442 } | |
1443 | |
1444 // Now compare return types also. | |
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1445 oop src_rtype = java_lang_invoke_MethodType::rtype(src_mtype); |
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1446 oop dst_rtype = java_lang_invoke_MethodType::rtype(dst_mtype); |
710 | 1447 if (src_rtype != dst_rtype) { |
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1448 err = check_return_type_change(dst_rtype, src_rtype, raw); // note reversal! |
710 | 1449 if (err != NULL) return err; |
1450 } | |
1451 | |
1452 assert(err == NULL, ""); | |
1453 return NULL; // all is well | |
1454 } | |
1455 | |
1456 | |
1457 const char* MethodHandles::check_argument_type_change(BasicType src_type, | |
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1458 klassOop src_klass, |
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1459 BasicType dst_type, |
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1460 klassOop dst_klass, |
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1461 int argnum, |
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1462 bool raw) { |
710 | 1463 const char* err = NULL; |
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1464 const bool for_return = (argnum < 0); |
710 | 1465 |
1466 // just in case: | |
1467 if (src_type == T_ARRAY) src_type = T_OBJECT; | |
1468 if (dst_type == T_ARRAY) dst_type = T_OBJECT; | |
1469 | |
1470 // Produce some nice messages if VerifyMethodHandles is turned on: | |
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1471 if (!same_basic_type_for_arguments(src_type, dst_type, raw, for_return)) { |
710 | 1472 if (src_type == T_OBJECT) { |
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1473 if (raw && is_java_primitive(dst_type)) |
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1474 return NULL; // ref-to-prim discards ref and returns zero |
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1475 err = (!for_return |
710 | 1476 ? "type mismatch: passing a %s for method argument #%d, which expects primitive %s" |
1477 : "type mismatch: returning a %s, but caller expects primitive %s"); | |
1478 } else if (dst_type == T_OBJECT) { | |
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1479 err = (!for_return |
710 | 1480 ? "type mismatch: passing a primitive %s for method argument #%d, which expects %s" |
1481 : "type mismatch: returning a primitive %s, but caller expects %s"); | |
1482 } else { | |
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1483 err = (!for_return |
710 | 1484 ? "type mismatch: passing a %s for method argument #%d, which expects %s" |
1485 : "type mismatch: returning a %s, but caller expects %s"); | |
1486 } | |
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1487 } else if (src_type == T_OBJECT && dst_type == T_OBJECT && |
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1488 class_cast_needed(src_klass, dst_klass)) { |
710 | 1489 if (!class_cast_needed(dst_klass, src_klass)) { |
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1490 if (raw) |
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1491 return NULL; // reverse cast is OK; the MH target is trusted to enforce it |
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1492 err = (!for_return |
710 | 1493 ? "cast required: passing a %s for method argument #%d, which expects %s" |
1494 : "cast required: returning a %s, but caller expects %s"); | |
1495 } else { | |
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1496 err = (!for_return |
710 | 1497 ? "reference mismatch: passing a %s for method argument #%d, which expects %s" |
1498 : "reference mismatch: returning a %s, but caller expects %s"); | |
1499 } | |
1500 } else { | |
1501 // passed the obstacle course | |
1502 return NULL; | |
1503 } | |
1504 | |
1505 // format, format, format | |
1506 const char* src_name = type2name(src_type); | |
1507 const char* dst_name = type2name(dst_type); | |
1508 if (src_name == NULL) src_name = "unknown type"; | |
1509 if (dst_name == NULL) dst_name = "unknown type"; | |
2478
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1510 if (src_type == T_OBJECT) |
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1511 src_name = (src_klass != NULL) ? Klass::cast(src_klass)->external_name() : "an unresolved class"; |
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1512 if (dst_type == T_OBJECT) |
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1513 dst_name = (dst_klass != NULL) ? Klass::cast(dst_klass)->external_name() : "an unresolved class"; |
710 | 1514 |
1515 size_t msglen = strlen(err) + strlen(src_name) + strlen(dst_name) + (argnum < 10 ? 1 : 11); | |
1516 char* msg = NEW_RESOURCE_ARRAY(char, msglen + 1); | |
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1517 if (!for_return) { |
710 | 1518 assert(strstr(err, "%d") != NULL, ""); |
1519 jio_snprintf(msg, msglen, err, src_name, argnum, dst_name); | |
1520 } else { | |
1521 assert(strstr(err, "%d") == NULL, ""); | |
1522 jio_snprintf(msg, msglen, err, src_name, dst_name); | |
1523 } | |
1524 return msg; | |
1525 } | |
1526 | |
1527 // Compute the depth within the stack of the given argument, i.e., | |
1528 // the combined size of arguments to the right of the given argument. | |
1529 // For the last argument (ptypes.length-1) this will be zero. | |
1530 // For the first argument (0) this will be the size of all | |
1531 // arguments but that one. For the special number -1, this | |
1532 // will be the size of all arguments, including the first. | |
1533 // If the argument is neither -1 nor a valid argument index, | |
1534 // then return a negative number. Otherwise, the result | |
1535 // is in the range [0..vmslots] inclusive. | |
1536 int MethodHandles::argument_slot(oop method_type, int arg) { | |
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1537 objArrayOop ptypes = java_lang_invoke_MethodType::ptypes(method_type); |
710 | 1538 int argslot = 0; |
1539 int len = ptypes->length(); | |
1540 if (arg < -1 || arg >= len) return -99; | |
1541 for (int i = len-1; i > arg; i--) { | |
1542 BasicType bt = java_lang_Class::as_BasicType(ptypes->obj_at(i)); | |
1543 argslot += type2size[bt]; | |
1544 } | |
1545 assert(argument_slot_to_argnum(method_type, argslot) == arg, "inverse works"); | |
1546 return argslot; | |
1547 } | |
1548 | |
1549 // Given a slot number, return the argument number. | |
1550 int MethodHandles::argument_slot_to_argnum(oop method_type, int query_argslot) { | |
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1551 objArrayOop ptypes = java_lang_invoke_MethodType::ptypes(method_type); |
710 | 1552 int argslot = 0; |
1553 int len = ptypes->length(); | |
1554 for (int i = len-1; i >= 0; i--) { | |
1555 if (query_argslot == argslot) return i; | |
1556 BasicType bt = java_lang_Class::as_BasicType(ptypes->obj_at(i)); | |
1557 argslot += type2size[bt]; | |
1558 } | |
1559 // return pseudo-arg deepest in stack: | |
1560 if (query_argslot == argslot) return -1; | |
1561 return -99; // oob slot, or splitting a double-slot arg | |
1562 } | |
1563 | |
1564 methodHandle MethodHandles::dispatch_decoded_method(methodHandle m, | |
1565 KlassHandle receiver_limit, | |
1566 int decode_flags, | |
1567 KlassHandle receiver_klass, | |
1568 TRAPS) { | |
1569 assert((decode_flags & ~_DMF_DIRECT_MASK) == 0, "must be direct method reference"); | |
1570 assert((decode_flags & _dmf_has_receiver) != 0, "must have a receiver or first reference argument"); | |
1571 | |
1572 if (!m->is_static() && | |
1573 (receiver_klass.is_null() || !receiver_klass->is_subtype_of(m->method_holder()))) | |
1574 // given type does not match class of method, or receiver is null! | |
1575 // caller should have checked this, but let's be extra careful... | |
1576 return methodHandle(); | |
1577 | |
1578 if (receiver_limit.not_null() && | |
1579 (receiver_klass.not_null() && !receiver_klass->is_subtype_of(receiver_limit()))) | |
1580 // given type is not limited to the receiver type | |
1581 // note that a null receiver can match any reference value, for a static method | |
1582 return methodHandle(); | |
1583 | |
1584 if (!(decode_flags & MethodHandles::_dmf_does_dispatch)) { | |
1585 // pre-dispatched or static method (null receiver is OK for static) | |
1586 return m; | |
1587 | |
1588 } else if (receiver_klass.is_null()) { | |
1589 // null receiver value; cannot dispatch | |
1590 return methodHandle(); | |
1591 | |
1592 } else if (!(decode_flags & MethodHandles::_dmf_from_interface)) { | |
1593 // perform virtual dispatch | |
1594 int vtable_index = m->vtable_index(); | |
1595 guarantee(vtable_index >= 0, "valid vtable index"); | |
1596 | |
1597 // receiver_klass might be an arrayKlassOop but all vtables start at | |
1598 // the same place. The cast is to avoid virtual call and assertion. | |
1599 // See also LinkResolver::runtime_resolve_virtual_method. | |
1600 instanceKlass* inst = (instanceKlass*)Klass::cast(receiver_klass()); | |
1601 DEBUG_ONLY(inst->verify_vtable_index(vtable_index)); | |
1602 methodOop m_oop = inst->method_at_vtable(vtable_index); | |
1603 return methodHandle(THREAD, m_oop); | |
1604 | |
1605 } else { | |
1606 // perform interface dispatch | |
1607 int itable_index = klassItable::compute_itable_index(m()); | |
1608 guarantee(itable_index >= 0, "valid itable index"); | |
1609 instanceKlass* inst = instanceKlass::cast(receiver_klass()); | |
1610 methodOop m_oop = inst->method_at_itable(m->method_holder(), itable_index, THREAD); | |
1611 return methodHandle(THREAD, m_oop); | |
1612 } | |
1613 } | |
1614 | |
1615 void MethodHandles::verify_DirectMethodHandle(Handle mh, methodHandle m, TRAPS) { | |
1616 // Verify type. | |
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1617 Handle mtype(THREAD, java_lang_invoke_MethodHandle::type(mh())); |
710 | 1618 verify_method_type(m, mtype, false, KlassHandle(), CHECK); |
1619 | |
1620 // Verify vmslots. | |
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1621 if (java_lang_invoke_MethodHandle::vmslots(mh()) != m->size_of_parameters()) { |
710 | 1622 THROW_MSG(vmSymbols::java_lang_InternalError(), "bad vmslots in DMH"); |
1623 } | |
1624 } | |
1625 | |
1626 void MethodHandles::init_DirectMethodHandle(Handle mh, methodHandle m, bool do_dispatch, TRAPS) { | |
1627 // Check arguments. | |
1628 if (mh.is_null() || m.is_null() || | |
1629 (!do_dispatch && m->is_abstract())) { | |
1630 THROW(vmSymbols::java_lang_InternalError()); | |
1631 } | |
1632 | |
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1633 java_lang_invoke_MethodHandle::init_vmslots(mh()); |
710 | 1634 |
1635 if (VerifyMethodHandles) { | |
1636 // The privileged code which invokes this routine should not make | |
1637 // a mistake about types, but it's better to verify. | |
1638 verify_DirectMethodHandle(mh, m, CHECK); | |
1639 } | |
1640 | |
1641 // Finally, after safety checks are done, link to the target method. | |
1642 // We will follow the same path as the latter part of | |
1643 // InterpreterRuntime::resolve_invoke(), which first finds the method | |
1644 // and then decides how to populate the constant pool cache entry | |
1645 // that links the interpreter calls to the method. We need the same | |
1646 // bits, and will use the same calling sequence code. | |
1647 | |
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1648 int vmindex = methodOopDesc::garbage_vtable_index; |
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1649 Handle vmtarget; |
710 | 1650 |
1651 instanceKlass::cast(m->method_holder())->link_class(CHECK); | |
1652 | |
1653 MethodHandleEntry* me = NULL; | |
1654 if (do_dispatch && Klass::cast(m->method_holder())->is_interface()) { | |
1655 // We are simulating an invokeinterface instruction. | |
1656 // (We might also be simulating an invokevirtual on a miranda method, | |
1657 // but it is safe to treat it as an invokeinterface.) | |
1658 assert(!m->can_be_statically_bound(), "no final methods on interfaces"); | |
1659 vmindex = klassItable::compute_itable_index(m()); | |
1660 assert(vmindex >= 0, "(>=0) == do_dispatch"); | |
1661 // Set up same bits as ConstantPoolCacheEntry::set_interface_call(). | |
1662 vmtarget = m->method_holder(); // the interface | |
1663 me = MethodHandles::entry(MethodHandles::_invokeinterface_mh); | |
1664 } else if (!do_dispatch || m->can_be_statically_bound()) { | |
1665 // We are simulating an invokestatic or invokespecial instruction. | |
1666 // Set up the method pointer, just like ConstantPoolCacheEntry::set_method(). | |
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1667 vmtarget = m; |
710 | 1668 // this does not help dispatch, but it will make it possible to parse this MH: |
1669 vmindex = methodOopDesc::nonvirtual_vtable_index; | |
1670 assert(vmindex < 0, "(>=0) == do_dispatch"); | |
1671 if (!m->is_static()) { | |
1672 me = MethodHandles::entry(MethodHandles::_invokespecial_mh); | |
1673 } else { | |
1674 me = MethodHandles::entry(MethodHandles::_invokestatic_mh); | |
1675 // Part of the semantics of a static call is an initialization barrier. | |
1676 // For a DMH, it is done now, when the handle is created. | |
1677 Klass* k = Klass::cast(m->method_holder()); | |
1678 if (k->should_be_initialized()) { | |
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1679 k->initialize(CHECK); // possible safepoint |
710 | 1680 } |
1681 } | |
1682 } else { | |
1683 // We are simulating an invokevirtual instruction. | |
1684 // Set up the vtable index, just like ConstantPoolCacheEntry::set_method(). | |
1685 // The key logic is LinkResolver::runtime_resolve_virtual_method. | |
1686 vmindex = m->vtable_index(); | |
1687 vmtarget = m->method_holder(); | |
1688 me = MethodHandles::entry(MethodHandles::_invokevirtual_mh); | |
1689 } | |
1690 | |
1691 if (me == NULL) { THROW(vmSymbols::java_lang_InternalError()); } | |
1692 | |
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1693 java_lang_invoke_DirectMethodHandle::set_vmtarget(mh(), vmtarget()); |
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1694 java_lang_invoke_DirectMethodHandle::set_vmindex( mh(), vmindex); |
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1695 DEBUG_ONLY(KlassHandle rlimit; int flags); |
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1696 assert(MethodHandles::decode_method(mh(), rlimit, flags) == m, |
710 | 1697 "properly stored for later decoding"); |
1698 DEBUG_ONLY(bool actual_do_dispatch = ((flags & _dmf_does_dispatch) != 0)); | |
1699 assert(!(actual_do_dispatch && !do_dispatch), | |
1700 "do not perform dispatch if !do_dispatch specified"); | |
1701 assert(actual_do_dispatch == (vmindex >= 0), "proper later decoding of do_dispatch"); | |
1702 assert(decode_MethodHandle_stack_pushes(mh()) == 0, "DMH does not move stack"); | |
1703 | |
1704 // Done! | |
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1705 java_lang_invoke_MethodHandle::set_vmentry(mh(), me); |
710 | 1706 } |
1707 | |
1708 void MethodHandles::verify_BoundMethodHandle_with_receiver(Handle mh, | |
1709 methodHandle m, | |
1710 TRAPS) { | |
1711 // Verify type. | |
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1712 KlassHandle bound_recv_type; |
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1713 { |
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1714 oop receiver = java_lang_invoke_BoundMethodHandle::argument(mh()); |
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1715 if (receiver != NULL) |
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1716 bound_recv_type = KlassHandle(THREAD, receiver->klass()); |
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1717 } |
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1718 Handle mtype(THREAD, java_lang_invoke_MethodHandle::type(mh())); |
710 | 1719 verify_method_type(m, mtype, true, bound_recv_type, CHECK); |
1720 | |
1721 int receiver_pos = m->size_of_parameters() - 1; | |
1722 | |
1723 // Verify MH.vmargslot, which should point at the bound receiver. | |
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1724 verify_vmargslot(mh, -1, java_lang_invoke_BoundMethodHandle::vmargslot(mh()), CHECK); |
710 | 1725 //verify_vmslots(mh, CHECK); |
1726 | |
1727 // Verify vmslots. | |
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1728 if (java_lang_invoke_MethodHandle::vmslots(mh()) != receiver_pos) { |
710 | 1729 THROW_MSG(vmSymbols::java_lang_InternalError(), "bad vmslots in BMH (receiver)"); |
1730 } | |
1731 } | |
1732 | |
1733 // Initialize a BMH with a receiver bound directly to a methodOop. | |
1734 void MethodHandles::init_BoundMethodHandle_with_receiver(Handle mh, | |
1735 methodHandle original_m, | |
1736 KlassHandle receiver_limit, | |
1737 int decode_flags, | |
1738 TRAPS) { | |
1739 // Check arguments. | |
1740 if (mh.is_null() || original_m.is_null()) { | |
1741 THROW(vmSymbols::java_lang_InternalError()); | |
1742 } | |
1743 | |
1744 KlassHandle receiver_klass; | |
1745 { | |
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1746 oop receiver_oop = java_lang_invoke_BoundMethodHandle::argument(mh()); |
710 | 1747 if (receiver_oop != NULL) |
1748 receiver_klass = KlassHandle(THREAD, receiver_oop->klass()); | |
1749 } | |
1750 methodHandle m = dispatch_decoded_method(original_m, | |
1751 receiver_limit, decode_flags, | |
1752 receiver_klass, | |
1753 CHECK); | |
1754 if (m.is_null()) { THROW(vmSymbols::java_lang_InternalError()); } | |
1755 if (m->is_abstract()) { THROW(vmSymbols::java_lang_AbstractMethodError()); } | |
1756 | |
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1757 java_lang_invoke_MethodHandle::init_vmslots(mh()); |
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1758 int vmargslot = m->size_of_parameters() - 1; |
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1759 assert(java_lang_invoke_BoundMethodHandle::vmargslot(mh()) == vmargslot, ""); |
710 | 1760 |
1761 if (VerifyMethodHandles) { | |
1762 verify_BoundMethodHandle_with_receiver(mh, m, CHECK); | |
1763 } | |
1764 | |
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1765 java_lang_invoke_BoundMethodHandle::set_vmtarget(mh(), m()); |
710 | 1766 |
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1767 DEBUG_ONLY(KlassHandle junk1; int junk2); |
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1768 assert(MethodHandles::decode_method(mh(), junk1, junk2) == m, "properly stored for later decoding"); |
710 | 1769 assert(decode_MethodHandle_stack_pushes(mh()) == 1, "BMH pushes one stack slot"); |
1770 | |
1771 // Done! | |
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1772 java_lang_invoke_MethodHandle::set_vmentry(mh(), MethodHandles::entry(MethodHandles::_bound_ref_direct_mh)); |
710 | 1773 } |
1774 | |
1775 void MethodHandles::verify_BoundMethodHandle(Handle mh, Handle target, int argnum, | |
1776 bool direct_to_method, TRAPS) { | |
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1777 ResourceMark rm; |
710 | 1778 Handle ptype_handle(THREAD, |
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1779 java_lang_invoke_MethodType::ptype(java_lang_invoke_MethodHandle::type(target()), argnum)); |
710 | 1780 KlassHandle ptype_klass; |
1781 BasicType ptype = java_lang_Class::as_BasicType(ptype_handle(), &ptype_klass); | |
1782 int slots_pushed = type2size[ptype]; | |
1783 | |
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1784 oop argument = java_lang_invoke_BoundMethodHandle::argument(mh()); |
710 | 1785 |
1786 const char* err = NULL; | |
1787 | |
1788 switch (ptype) { | |
1789 case T_OBJECT: | |
1790 if (argument != NULL) | |
1791 // we must implicitly convert from the arg type to the outgoing ptype | |
1792 err = check_argument_type_change(T_OBJECT, argument->klass(), ptype, ptype_klass(), argnum); | |
1793 break; | |
1794 | |
1795 case T_ARRAY: case T_VOID: | |
1796 assert(false, "array, void do not appear here"); | |
1797 default: | |
1798 if (ptype != T_INT && !is_subword_type(ptype)) { | |
1799 err = "unexpected parameter type"; | |
1800 break; | |
1801 } | |
1802 // check subrange of Integer.value, if necessary | |
1142 | 1803 if (argument == NULL || argument->klass() != SystemDictionary::Integer_klass()) { |
710 | 1804 err = "bound integer argument must be of type java.lang.Integer"; |
1805 break; | |
1806 } | |
1807 if (ptype != T_INT) { | |
1808 int value_offset = java_lang_boxing_object::value_offset_in_bytes(T_INT); | |
1809 jint value = argument->int_field(value_offset); | |
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1810 int vminfo = adapter_unbox_subword_vminfo(ptype); |
710 | 1811 jint subword = truncate_subword_from_vminfo(value, vminfo); |
1812 if (value != subword) { | |
1813 err = "bound subword value does not fit into the subword type"; | |
1814 break; | |
1815 } | |
1816 } | |
1817 break; | |
1818 case T_FLOAT: | |
1819 case T_DOUBLE: | |
1820 case T_LONG: | |
1821 { | |
1822 // we must implicitly convert from the unboxed arg type to the outgoing ptype | |
1823 BasicType argbox = java_lang_boxing_object::basic_type(argument); | |
1824 if (argbox != ptype) { | |
1825 err = check_argument_type_change(T_OBJECT, (argument == NULL | |
1142 | 1826 ? SystemDictionary::Object_klass() |
710 | 1827 : argument->klass()), |
1828 ptype, ptype_klass(), argnum); | |
1829 assert(err != NULL, "this must be an error"); | |
1830 } | |
1831 break; | |
1832 } | |
1833 } | |
1834 | |
1835 if (err == NULL) { | |
1836 DEBUG_ONLY(int this_pushes = decode_MethodHandle_stack_pushes(mh())); | |
1837 if (direct_to_method) { | |
1838 assert(this_pushes == slots_pushed, "BMH pushes one or two stack slots"); | |
1839 } else { | |
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1840 int target_pushes = decode_MethodHandle_stack_pushes(target()); |
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1841 assert(this_pushes == slots_pushed + target_pushes, "BMH stack motion must be correct"); |
710 | 1842 } |
1843 } | |
1844 | |
1845 if (err == NULL) { | |
1846 // Verify the rest of the method type. | |
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1847 err = check_method_type_insertion(java_lang_invoke_MethodHandle::type(mh()), |
710 | 1848 argnum, ptype_handle(), |
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1849 java_lang_invoke_MethodHandle::type(target())); |
710 | 1850 } |
1851 | |
1852 if (err != NULL) { | |
1853 THROW_MSG(vmSymbols::java_lang_InternalError(), err); | |
1854 } | |
1855 } | |
1856 | |
1857 void MethodHandles::init_BoundMethodHandle(Handle mh, Handle target, int argnum, TRAPS) { | |
1858 // Check arguments. | |
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1859 if (mh.is_null() || target.is_null() || !java_lang_invoke_MethodHandle::is_instance(target())) { |
710 | 1860 THROW(vmSymbols::java_lang_InternalError()); |
1861 } | |
1862 | |
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1863 java_lang_invoke_MethodHandle::init_vmslots(mh()); |
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1864 int argslot = java_lang_invoke_BoundMethodHandle::vmargslot(mh()); |
710 | 1865 |
1866 if (VerifyMethodHandles) { | |
1867 int insert_after = argnum - 1; | |
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1868 verify_vmargslot(mh, insert_after, argslot, CHECK); |
710 | 1869 verify_vmslots(mh, CHECK); |
1870 } | |
1871 | |
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1872 // Get bound type and required slots. |
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1873 BasicType ptype; |
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1874 { |
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1875 oop ptype_oop = java_lang_invoke_MethodType::ptype(java_lang_invoke_MethodHandle::type(target()), argnum); |
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1876 ptype = java_lang_Class::as_BasicType(ptype_oop); |
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1877 } |
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1878 int slots_pushed = type2size[ptype]; |
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1879 |
710 | 1880 // If (a) the target is a direct non-dispatched method handle, |
1881 // or (b) the target is a dispatched direct method handle and we | |
1882 // are binding the receiver, cut out the middle-man. | |
1883 // Do this by decoding the DMH and using its methodOop directly as vmtarget. | |
1884 bool direct_to_method = false; | |
1885 if (OptimizeMethodHandles && | |
1886 target->klass() == SystemDictionary::DirectMethodHandle_klass() && | |
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1887 (argnum != 0 || java_lang_invoke_BoundMethodHandle::argument(mh()) != NULL) && |
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1888 (argnum == 0 || java_lang_invoke_DirectMethodHandle::vmindex(target()) < 0)) { |
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1889 KlassHandle receiver_limit; int decode_flags = 0; |
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1890 methodHandle m = decode_method(target(), receiver_limit, decode_flags); |
710 | 1891 if (m.is_null()) { THROW_MSG(vmSymbols::java_lang_InternalError(), "DMH failed to decode"); } |
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1892 DEBUG_ONLY(int m_vmslots = m->size_of_parameters() - slots_pushed); // pos. of 1st arg. |
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1893 assert(java_lang_invoke_BoundMethodHandle::vmslots(mh()) == m_vmslots, "type w/ m sig"); |
710 | 1894 if (argnum == 0 && (decode_flags & _dmf_has_receiver) != 0) { |
1895 init_BoundMethodHandle_with_receiver(mh, m, | |
1896 receiver_limit, decode_flags, | |
1897 CHECK); | |
1898 return; | |
1899 } | |
1900 | |
1901 // Even if it is not a bound receiver, we still might be able | |
1902 // to bind another argument and still invoke the methodOop directly. | |
1903 if (!(decode_flags & _dmf_does_dispatch)) { | |
1904 direct_to_method = true; | |
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1905 java_lang_invoke_BoundMethodHandle::set_vmtarget(mh(), m()); |
710 | 1906 } |
1907 } | |
1908 if (!direct_to_method) | |
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1909 java_lang_invoke_BoundMethodHandle::set_vmtarget(mh(), target()); |
710 | 1910 |
1911 if (VerifyMethodHandles) { | |
1912 verify_BoundMethodHandle(mh, target, argnum, direct_to_method, CHECK); | |
1913 } | |
1914 | |
1915 // Next question: Is this a ref, int, or long bound value? | |
1916 MethodHandleEntry* me = NULL; | |
1917 if (ptype == T_OBJECT) { | |
1918 if (direct_to_method) me = MethodHandles::entry(_bound_ref_direct_mh); | |
1919 else me = MethodHandles::entry(_bound_ref_mh); | |
1920 } else if (slots_pushed == 2) { | |
1921 if (direct_to_method) me = MethodHandles::entry(_bound_long_direct_mh); | |
1922 else me = MethodHandles::entry(_bound_long_mh); | |
1923 } else if (slots_pushed == 1) { | |
1924 if (direct_to_method) me = MethodHandles::entry(_bound_int_direct_mh); | |
1925 else me = MethodHandles::entry(_bound_int_mh); | |
1926 } else { | |
1927 assert(false, ""); | |
1928 } | |
1929 | |
1930 // Done! | |
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1931 java_lang_invoke_MethodHandle::set_vmentry(mh(), me); |
710 | 1932 } |
1933 | |
1934 static void throw_InternalError_for_bad_conversion(int conversion, const char* err, TRAPS) { | |
1935 char msg[200]; | |
1936 jio_snprintf(msg, sizeof(msg), "bad adapter (conversion=0x%08x): %s", conversion, err); | |
1937 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), msg); | |
1938 } | |
1939 | |
1940 void MethodHandles::verify_AdapterMethodHandle(Handle mh, int argnum, TRAPS) { | |
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1941 ResourceMark rm; |
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1942 jint conversion = java_lang_invoke_AdapterMethodHandle::conversion(mh()); |
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1943 int argslot = java_lang_invoke_AdapterMethodHandle::vmargslot(mh()); |
710 | 1944 |
1945 verify_vmargslot(mh, argnum, argslot, CHECK); | |
1946 verify_vmslots(mh, CHECK); | |
1947 | |
1948 jint conv_op = adapter_conversion_op(conversion); | |
1949 if (!conv_op_valid(conv_op)) { | |
1950 throw_InternalError_for_bad_conversion(conversion, "unknown conversion op", THREAD); | |
1951 return; | |
1952 } | |
1953 EntryKind ek = adapter_entry_kind(conv_op); | |
1954 | |
1955 int stack_move = adapter_conversion_stack_move(conversion); | |
1956 BasicType src = adapter_conversion_src_type(conversion); | |
1957 BasicType dest = adapter_conversion_dest_type(conversion); | |
1958 int vminfo = adapter_conversion_vminfo(conversion); // should be zero | |
1959 | |
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1960 Handle argument(THREAD, java_lang_invoke_AdapterMethodHandle::argument(mh())); |
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1961 Handle target(THREAD, java_lang_invoke_AdapterMethodHandle::vmtarget(mh())); |
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1962 Handle src_mtype(THREAD, java_lang_invoke_MethodHandle::type(mh())); |
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1963 Handle dst_mtype(THREAD, java_lang_invoke_MethodHandle::type(target())); |
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1964 Handle arg_mtype; |
710 | 1965 |
1966 const char* err = NULL; | |
1967 | |
1968 if (err == NULL) { | |
1969 // Check that the correct argument is supplied, but only if it is required. | |
1970 switch (ek) { | |
1971 case _adapter_check_cast: // target type of cast | |
1972 case _adapter_ref_to_prim: // wrapper type from which to unbox | |
1973 case _adapter_spread_args: // array type to spread from | |
1974 if (!java_lang_Class::is_instance(argument()) | |
1975 || java_lang_Class::is_primitive(argument())) | |
1976 { err = "adapter requires argument of type java.lang.Class"; break; } | |
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1977 if (ek == _adapter_spread_args) { |
710 | 1978 // Make sure it is a suitable collection type. (Array, for now.) |
1979 Klass* ak = Klass::cast(java_lang_Class::as_klassOop(argument())); | |
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1980 if (!ak->oop_is_array()) |
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1981 { err = "spread adapter requires argument representing an array class"; break; } |
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1982 BasicType et = arrayKlass::cast(ak->as_klassOop())->element_type(); |
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1983 if (et != dest && stack_move <= 0) |
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1984 { err = "spread adapter requires array class argument of correct type"; break; } |
710 | 1985 } |
1986 break; | |
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1987 case _adapter_prim_to_ref: // boxer MH to use |
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1988 case _adapter_collect_args: // method handle which collects the args |
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1989 case _adapter_fold_args: // method handle which collects the args |
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1990 if (!UseRicochetFrames) { |
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1991 { err = "box/collect/fold operators are not supported"; break; } |
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1992 } |
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1993 if (!java_lang_invoke_MethodHandle::is_instance(argument())) |
710 | 1994 { err = "MethodHandle adapter argument required"; break; } |
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1995 arg_mtype = Handle(THREAD, java_lang_invoke_MethodHandle::type(argument())); |
710 | 1996 break; |
1997 default: | |
1998 if (argument.not_null()) | |
1999 { err = "adapter has spurious argument"; break; } | |
2000 break; | |
2001 } | |
2002 } | |
2003 | |
2004 if (err == NULL) { | |
2005 // Check that the src/dest types are supplied if needed. | |
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2006 // Also check relevant parameter or return types. |
710 | 2007 switch (ek) { |
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2008 case _adapter_check_cast: |
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2009 if (src != T_OBJECT || dest != T_OBJECT) { |
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2010 err = "adapter requires object src/dest conversion subfields"; |
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2011 } |
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2012 break; |
710 | 2013 case _adapter_prim_to_prim: |
2014 if (!is_java_primitive(src) || !is_java_primitive(dest) || src == dest) { | |
2015 err = "adapter requires primitive src/dest conversion subfields"; break; | |
2016 } | |
2017 if ( (src == T_FLOAT || src == T_DOUBLE) && !(dest == T_FLOAT || dest == T_DOUBLE) || | |
2018 !(src == T_FLOAT || src == T_DOUBLE) && (dest == T_FLOAT || dest == T_DOUBLE)) { | |
2019 err = "adapter cannot convert beween floating and fixed-point"; break; | |
2020 } | |
2021 break; | |
2022 case _adapter_ref_to_prim: | |
2023 if (src != T_OBJECT || !is_java_primitive(dest) | |
2024 || argument() != Klass::cast(SystemDictionary::box_klass(dest))->java_mirror()) { | |
2025 err = "adapter requires primitive dest conversion subfield"; break; | |
2026 } | |
2027 break; | |
2028 case _adapter_prim_to_ref: | |
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2029 if (!is_java_primitive(src) || dest != T_OBJECT) { |
710 | 2030 err = "adapter requires primitive src conversion subfield"; break; |
2031 } | |
2032 break; | |
2033 case _adapter_swap_args: | |
2034 { | |
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2035 if (!src || !dest) { |
710 | 2036 err = "adapter requires src/dest conversion subfields for swap"; break; |
2037 } | |
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2038 int src_size = type2size[src]; |
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2039 if (src_size != type2size[dest]) { |
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2040 err = "adapter requires equal sizes for src/dest"; break; |
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2041 } |
710 | 2042 int src_slot = argslot; |
2043 int dest_slot = vminfo; | |
2044 int src_arg = argnum; | |
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2045 int dest_arg = argument_slot_to_argnum(src_mtype(), dest_slot); |
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2046 verify_vmargslot(mh, dest_arg, dest_slot, CHECK); |
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2047 if (!(dest_slot >= src_slot + src_size) && |
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2048 !(src_slot >= dest_slot + src_size)) { |
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2049 err = "source, destination slots must be distinct"; break; |
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2050 } else if (!(src_slot > dest_slot)) { |
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2051 err = "source of swap must be deeper in stack"; break; |
710 | 2052 } |
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2053 err = check_argument_type_change(java_lang_invoke_MethodType::ptype(src_mtype(), dest_arg), |
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2054 java_lang_invoke_MethodType::ptype(dst_mtype(), src_arg), |
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2055 dest_arg); |
710 | 2056 if (err == NULL) |
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2057 err = check_argument_type_change(java_lang_invoke_MethodType::ptype(src_mtype(), src_arg), |
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2058 java_lang_invoke_MethodType::ptype(dst_mtype(), dest_arg), |
710 | 2059 src_arg); |
3449
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2060 break; |
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2061 } |
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2062 case _adapter_rot_args: |
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2063 { |
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2064 if (!src || !dest) { |
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2065 err = "adapter requires src/dest conversion subfields for rotate"; break; |
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2066 } |
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2067 int src_slot = argslot; |
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2068 int limit_raw = vminfo; |
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2069 bool rot_down = (src_slot < limit_raw); |
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2070 int limit_bias = (rot_down ? MethodHandles::OP_ROT_ARGS_DOWN_LIMIT_BIAS : 0); |
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2071 int limit_slot = limit_raw - limit_bias; |
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2072 int src_arg = argnum; |
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2073 int limit_arg = argument_slot_to_argnum(src_mtype(), limit_slot); |
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2074 verify_vmargslot(mh, limit_arg, limit_slot, CHECK); |
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2075 if (src_slot == limit_slot) { |
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2076 err = "source, destination slots must be distinct"; break; |
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2077 } |
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2078 if (!rot_down) { // rotate slots up == shift arguments left |
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2079 // limit_slot is an inclusive lower limit |
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2080 assert((src_slot > limit_slot) && (src_arg < limit_arg), ""); |
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2081 // rotate up: [limit_slot..src_slot-ss] --> [limit_slot+ss..src_slot] |
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2082 // that is: [src_arg+1..limit_arg] --> [src_arg..limit_arg-1] |
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|
2083 for (int i = src_arg+1; i <= limit_arg && err == NULL; i++) { |
a9b8b43b115f
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|
2084 err = check_argument_type_change(java_lang_invoke_MethodType::ptype(src_mtype(), i), |
a9b8b43b115f
7052219: JSR 292: Crash in ~BufferBlob::MethodHandles adapters
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|
2085 java_lang_invoke_MethodType::ptype(dst_mtype(), i-1), |
a9b8b43b115f
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parents:
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diff
changeset
|
2086 i); |
a9b8b43b115f
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parents:
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diff
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|
2087 } |
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|
2088 } else { // rotate slots down == shfit arguments right |
a9b8b43b115f
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|
2089 // limit_slot is an exclusive upper limit |
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|
2090 assert((src_slot < limit_slot - limit_bias) && (src_arg > limit_arg + limit_bias), ""); |
a9b8b43b115f
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|
2091 // rotate down: [src_slot+ss..limit_slot) --> [src_slot..limit_slot-ss) |
a9b8b43b115f
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|
2092 // that is: (limit_arg..src_arg-1] --> (dst_arg+1..src_arg] |
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|
2093 for (int i = limit_arg+1; i <= src_arg-1 && err == NULL; i++) { |
a9b8b43b115f
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diff
changeset
|
2094 err = check_argument_type_change(java_lang_invoke_MethodType::ptype(src_mtype(), i), |
a9b8b43b115f
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|
2095 java_lang_invoke_MethodType::ptype(dst_mtype(), i+1), |
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|
2096 i); |
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diff
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|
2097 } |
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|
2098 } |
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|
2099 if (err == NULL) { |
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|
2100 int dest_arg = (rot_down ? limit_arg+1 : limit_arg); |
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|
2101 err = check_argument_type_change(java_lang_invoke_MethodType::ptype(src_mtype(), src_arg), |
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|
2102 java_lang_invoke_MethodType::ptype(dst_mtype(), dest_arg), |
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|
2103 src_arg); |
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|
2104 } |
710 | 2105 } |
2106 break; | |
3363
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|
2107 case _adapter_spread_args: |
710 | 2108 case _adapter_collect_args: |
3363
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|
2109 case _adapter_fold_args: |
710 | 2110 { |
3363
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|
2111 bool is_spread = (ek == _adapter_spread_args); |
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|
2112 bool is_fold = (ek == _adapter_fold_args); |
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|
2113 BasicType coll_type = is_spread ? src : dest; |
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|
2114 BasicType elem_type = is_spread ? dest : src; |
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|
2115 // coll_type is type of args in collected form (or T_VOID if none) |
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|
2116 // elem_type is common type of args in spread form (or T_VOID if missing or heterogeneous) |
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|
2117 if (coll_type == 0 || elem_type == 0) { |
167b70ff3abc
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diff
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|
2118 err = "adapter requires src/dest subfields for spread or collect"; break; |
167b70ff3abc
6939861: JVM should handle more conversion operations
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diff
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|
2119 } |
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diff
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|
2120 if (is_spread && coll_type != T_OBJECT) { |
167b70ff3abc
6939861: JVM should handle more conversion operations
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parents:
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diff
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|
2121 err = "spread adapter requires object type for argument bundle"; break; |
167b70ff3abc
6939861: JVM should handle more conversion operations
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parents:
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diff
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|
2122 } |
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|
2123 Handle spread_mtype = (is_spread ? dst_mtype : src_mtype); |
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|
2124 int spread_slot = argslot; |
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|
2125 int spread_arg = argnum; |
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|
2126 int slots_pushed = stack_move / stack_move_unit(); |
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diff
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|
2127 int coll_slot_count = type2size[coll_type]; |
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|
2128 int spread_slot_count = (is_spread ? slots_pushed : -slots_pushed) + coll_slot_count; |
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|
2129 if (is_fold) spread_slot_count = argument_slot_count(arg_mtype()); |
167b70ff3abc
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diff
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|
2130 if (!is_spread) { |
167b70ff3abc
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diff
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|
2131 int init_slots = argument_slot_count(src_mtype()); |
167b70ff3abc
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diff
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|
2132 int coll_slots = argument_slot_count(arg_mtype()); |
167b70ff3abc
6939861: JVM should handle more conversion operations
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diff
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|
2133 if (spread_slot_count > init_slots || |
167b70ff3abc
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diff
changeset
|
2134 spread_slot_count != coll_slots) { |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
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diff
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|
2135 err = "collect adapter has inconsistent arg counts"; break; |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
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diff
changeset
|
2136 } |
167b70ff3abc
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diff
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|
2137 int next_slots = argument_slot_count(dst_mtype()); |
167b70ff3abc
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|
2138 int unchanged_slots_in = (init_slots - spread_slot_count); |
167b70ff3abc
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|
2139 int unchanged_slots_out = (next_slots - coll_slot_count - (is_fold ? spread_slot_count : 0)); |
167b70ff3abc
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|
2140 if (unchanged_slots_in != unchanged_slots_out) { |
167b70ff3abc
6939861: JVM should handle more conversion operations
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parents:
3274
diff
changeset
|
2141 err = "collect adapter continuation has inconsistent arg counts"; break; |
167b70ff3abc
6939861: JVM should handle more conversion operations
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parents:
3274
diff
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|
2142 } |
710 | 2143 } |
2144 } | |
2145 break; | |
2146 default: | |
2147 if (src != 0 || dest != 0) { | |
2148 err = "adapter has spurious src/dest conversion subfields"; break; | |
2149 } | |
2150 break; | |
2151 } | |
2152 } | |
2153 | |
2154 if (err == NULL) { | |
2155 // Check the stack_move subfield. | |
2156 // It must always report the net change in stack size, positive or negative. | |
2157 int slots_pushed = stack_move / stack_move_unit(); | |
2158 switch (ek) { | |
2159 case _adapter_prim_to_prim: | |
2160 case _adapter_ref_to_prim: | |
2161 case _adapter_prim_to_ref: | |
2162 if (slots_pushed != type2size[dest] - type2size[src]) { | |
2163 err = "wrong stack motion for primitive conversion"; | |
2164 } | |
2165 break; | |
2166 case _adapter_dup_args: | |
2167 if (slots_pushed <= 0) { | |
2168 err = "adapter requires conversion subfield slots_pushed > 0"; | |
2169 } | |
2170 break; | |
2171 case _adapter_drop_args: | |
2172 if (slots_pushed >= 0) { | |
2173 err = "adapter requires conversion subfield slots_pushed < 0"; | |
2174 } | |
2175 break; | |
2176 case _adapter_collect_args: | |
3363
167b70ff3abc
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parents:
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diff
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|
2177 case _adapter_fold_args: |
167b70ff3abc
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diff
changeset
|
2178 if (slots_pushed > 2) { |
167b70ff3abc
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parents:
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diff
changeset
|
2179 err = "adapter requires conversion subfield slots_pushed <= 2"; |
710 | 2180 } |
2181 break; | |
2182 case _adapter_spread_args: | |
2183 if (slots_pushed < -1) { | |
2184 err = "adapter requires conversion subfield slots_pushed >= -1"; | |
2185 } | |
2186 break; | |
2187 default: | |
2188 if (stack_move != 0) { | |
2189 err = "adapter has spurious stack_move conversion subfield"; | |
2190 } | |
2191 break; | |
2192 } | |
2193 if (err == NULL && stack_move != slots_pushed * stack_move_unit()) { | |
2194 err = "stack_move conversion subfield must be multiple of stack_move_unit"; | |
2195 } | |
2196 } | |
2197 | |
2198 if (err == NULL) { | |
3363
167b70ff3abc
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parents:
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diff
changeset
|
2199 // Make sure this adapter's stack pushing is accurately recorded. |
710 | 2200 int slots_pushed = stack_move / stack_move_unit(); |
2357
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diff
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|
2201 int this_vmslots = java_lang_invoke_MethodHandle::vmslots(mh()); |
8033953d67ff
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
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diff
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|
2202 int target_vmslots = java_lang_invoke_MethodHandle::vmslots(target()); |
3363
167b70ff3abc
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parents:
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diff
changeset
|
2203 int target_pushes = decode_MethodHandle_stack_pushes(target()); |
1039
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jrose
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diff
changeset
|
2204 if (slots_pushed != (target_vmslots - this_vmslots)) { |
710 | 2205 err = "stack_move inconsistent with previous and current MethodType vmslots"; |
3363
167b70ff3abc
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parents:
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diff
changeset
|
2206 } else { |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3274
diff
changeset
|
2207 int this_pushes = decode_MethodHandle_stack_pushes(mh()); |
167b70ff3abc
6939861: JVM should handle more conversion operations
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parents:
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diff
changeset
|
2208 if (slots_pushed + target_pushes != this_pushes) { |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3274
diff
changeset
|
2209 if (this_pushes == 0) |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3274
diff
changeset
|
2210 err = "adapter push count not initialized"; |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3274
diff
changeset
|
2211 else |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3274
diff
changeset
|
2212 err = "adapter push count is wrong"; |
710 | 2213 } |
2214 } | |
2215 | |
2216 // While we're at it, check that the stack motion decoder works: | |
2217 DEBUG_ONLY(int this_pushes = decode_MethodHandle_stack_pushes(mh())); | |
1039
987e948ebbc8
6815692: method handle code needs some cleanup (post-6655638)
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726
diff
changeset
|
2218 assert(this_pushes == slots_pushed + target_pushes, "AMH stack motion must be correct"); |
710 | 2219 } |
2220 | |
2221 if (err == NULL && vminfo != 0) { | |
2222 switch (ek) { | |
3363
167b70ff3abc
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parents:
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diff
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|
2223 case _adapter_swap_args: |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3274
diff
changeset
|
2224 case _adapter_rot_args: |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3274
diff
changeset
|
2225 case _adapter_prim_to_ref: |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3274
diff
changeset
|
2226 case _adapter_collect_args: |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3274
diff
changeset
|
2227 case _adapter_fold_args: |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
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diff
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|
2228 break; // OK |
710 | 2229 default: |
2230 err = "vminfo subfield is reserved to the JVM"; | |
2231 } | |
2232 } | |
2233 | |
2234 // Do additional ad hoc checks. | |
2235 if (err == NULL) { | |
2236 switch (ek) { | |
2237 case _adapter_retype_only: | |
1039
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6815692: method handle code needs some cleanup (post-6655638)
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diff
changeset
|
2238 err = check_method_type_passthrough(src_mtype(), dst_mtype(), false); |
987e948ebbc8
6815692: method handle code needs some cleanup (post-6655638)
jrose
parents:
726
diff
changeset
|
2239 break; |
987e948ebbc8
6815692: method handle code needs some cleanup (post-6655638)
jrose
parents:
726
diff
changeset
|
2240 |
987e948ebbc8
6815692: method handle code needs some cleanup (post-6655638)
jrose
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diff
changeset
|
2241 case _adapter_retype_raw: |
987e948ebbc8
6815692: method handle code needs some cleanup (post-6655638)
jrose
parents:
726
diff
changeset
|
2242 err = check_method_type_passthrough(src_mtype(), dst_mtype(), true); |
710 | 2243 break; |
2244 | |
2245 case _adapter_check_cast: | |
2246 { | |
2247 // The actual value being checked must be a reference: | |
2357
8033953d67ff
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jrose
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2356
diff
changeset
|
2248 err = check_argument_type_change(java_lang_invoke_MethodType::ptype(src_mtype(), argnum), |
710 | 2249 object_java_mirror(), argnum); |
2250 if (err != NULL) break; | |
2251 | |
2252 // The output of the cast must fit with the destination argument: | |
2253 Handle cast_class = argument; | |
2254 err = check_method_type_conversion(src_mtype(), | |
2255 argnum, cast_class(), | |
2256 dst_mtype()); | |
2257 } | |
2258 break; | |
2259 | |
2260 // %%% TO DO: continue in remaining cases to verify src/dst_mtype if VerifyMethodHandles | |
2261 } | |
2262 } | |
2263 | |
2264 if (err != NULL) { | |
2265 throw_InternalError_for_bad_conversion(conversion, err, THREAD); | |
2266 return; | |
2267 } | |
2268 | |
2269 } | |
2270 | |
2271 void MethodHandles::init_AdapterMethodHandle(Handle mh, Handle target, int argnum, TRAPS) { | |
3371
fabcf26ee72f
6998541: JSR 292 implement missing return-type conversion for OP_RETYPE_RAW
twisti
parents:
3363
diff
changeset
|
2272 Handle argument = java_lang_invoke_AdapterMethodHandle::argument(mh()); |
fabcf26ee72f
6998541: JSR 292 implement missing return-type conversion for OP_RETYPE_RAW
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diff
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|
2273 int argslot = java_lang_invoke_AdapterMethodHandle::vmargslot(mh()); |
fabcf26ee72f
6998541: JSR 292 implement missing return-type conversion for OP_RETYPE_RAW
twisti
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3363
diff
changeset
|
2274 jint conversion = java_lang_invoke_AdapterMethodHandle::conversion(mh()); |
fabcf26ee72f
6998541: JSR 292 implement missing return-type conversion for OP_RETYPE_RAW
twisti
parents:
3363
diff
changeset
|
2275 jint conv_op = adapter_conversion_op(conversion); |
710 | 2276 |
2277 // adjust the adapter code to the internal EntryKind enumeration: | |
2278 EntryKind ek_orig = adapter_entry_kind(conv_op); | |
2279 EntryKind ek_opt = ek_orig; // may be optimized | |
3363
167b70ff3abc
6939861: JVM should handle more conversion operations
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|
2280 EntryKind ek_try; // temp |
710 | 2281 |
2282 // Finalize the vmtarget field (Java initialized it to null). | |
2357
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7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
2356
diff
changeset
|
2283 if (!java_lang_invoke_MethodHandle::is_instance(target())) { |
710 | 2284 throw_InternalError_for_bad_conversion(conversion, "bad target", THREAD); |
2285 return; | |
2286 } | |
2357
8033953d67ff
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
2356
diff
changeset
|
2287 java_lang_invoke_AdapterMethodHandle::set_vmtarget(mh(), target()); |
710 | 2288 |
2289 int stack_move = adapter_conversion_stack_move(conversion); | |
2290 BasicType src = adapter_conversion_src_type(conversion); | |
2291 BasicType dest = adapter_conversion_dest_type(conversion); | |
2292 int vminfo = adapter_conversion_vminfo(conversion); // should be zero | |
2293 | |
3363
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6939861: JVM should handle more conversion operations
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parents:
3274
diff
changeset
|
2294 int slots_pushed = stack_move / stack_move_unit(); |
167b70ff3abc
6939861: JVM should handle more conversion operations
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parents:
3274
diff
changeset
|
2295 |
167b70ff3abc
6939861: JVM should handle more conversion operations
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parents:
3274
diff
changeset
|
2296 if (VerifyMethodHandles) { |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
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diff
changeset
|
2297 verify_AdapterMethodHandle(mh, argnum, CHECK); |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3274
diff
changeset
|
2298 } |
167b70ff3abc
6939861: JVM should handle more conversion operations
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parents:
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diff
changeset
|
2299 |
710 | 2300 const char* err = NULL; |
2301 | |
3363
167b70ff3abc
6939861: JVM should handle more conversion operations
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parents:
3274
diff
changeset
|
2302 if (!conv_op_supported(conv_op)) { |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3274
diff
changeset
|
2303 err = "adapter not yet implemented in the JVM"; |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3274
diff
changeset
|
2304 } |
167b70ff3abc
6939861: JVM should handle more conversion operations
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parents:
3274
diff
changeset
|
2305 |
710 | 2306 // Now it's time to finish the case analysis and pick a MethodHandleEntry. |
2307 switch (ek_orig) { | |
2308 case _adapter_retype_only: | |
1039
987e948ebbc8
6815692: method handle code needs some cleanup (post-6655638)
jrose
parents:
726
diff
changeset
|
2309 case _adapter_retype_raw: |
710 | 2310 case _adapter_check_cast: |
2311 case _adapter_dup_args: | |
2312 case _adapter_drop_args: | |
2313 // these work fine via general case code | |
2314 break; | |
2315 | |
2316 case _adapter_prim_to_prim: | |
2317 { | |
2318 // Non-subword cases are {int,float,long,double} -> {int,float,long,double}. | |
2319 // And, the {float,double} -> {int,long} cases must be handled by Java. | |
2320 switch (type2size[src] *4+ type2size[dest]) { | |
2321 case 1 *4+ 1: | |
2322 assert(src == T_INT || is_subword_type(src), "source is not float"); | |
2323 // Subword-related cases are int -> {boolean,byte,char,short}. | |
2324 ek_opt = _adapter_opt_i2i; | |
1849
5beba6174298
6987555: JSR 292 unboxing to a boolean value fails on big-endian SPARC
twisti
parents:
1748
diff
changeset
|
2325 vminfo = adapter_prim_to_prim_subword_vminfo(dest); |
710 | 2326 break; |
2327 case 2 *4+ 1: | |
2328 if (src == T_LONG && (dest == T_INT || is_subword_type(dest))) { | |
2329 ek_opt = _adapter_opt_l2i; | |
1849
5beba6174298
6987555: JSR 292 unboxing to a boolean value fails on big-endian SPARC
twisti
parents:
1748
diff
changeset
|
2330 vminfo = adapter_prim_to_prim_subword_vminfo(dest); |
710 | 2331 } else if (src == T_DOUBLE && dest == T_FLOAT) { |
2332 ek_opt = _adapter_opt_d2f; | |
2333 } else { | |
3371
fabcf26ee72f
6998541: JSR 292 implement missing return-type conversion for OP_RETYPE_RAW
twisti
parents:
3363
diff
changeset
|
2334 goto throw_not_impl; // runs user code, hence could block |
710 | 2335 } |
2336 break; | |
2337 case 1 *4+ 2: | |
3363
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3274
diff
changeset
|
2338 if ((src == T_INT || is_subword_type(src)) && dest == T_LONG) { |
710 | 2339 ek_opt = _adapter_opt_i2l; |
2340 } else if (src == T_FLOAT && dest == T_DOUBLE) { | |
2341 ek_opt = _adapter_opt_f2d; | |
2342 } else { | |
3371
fabcf26ee72f
6998541: JSR 292 implement missing return-type conversion for OP_RETYPE_RAW
twisti
parents:
3363
diff
changeset
|
2343 goto throw_not_impl; // runs user code, hence could block |
710 | 2344 } |
2345 break; | |
2346 default: | |
3371
fabcf26ee72f
6998541: JSR 292 implement missing return-type conversion for OP_RETYPE_RAW
twisti
parents:
3363
diff
changeset
|
2347 goto throw_not_impl; // runs user code, hence could block |
710 | 2348 break; |
2349 } | |
2350 } | |
2351 break; | |
2352 | |
2353 case _adapter_ref_to_prim: | |
2354 { | |
2355 switch (type2size[dest]) { | |
2356 case 1: | |
2357 ek_opt = _adapter_opt_unboxi; | |
1849
5beba6174298
6987555: JSR 292 unboxing to a boolean value fails on big-endian SPARC
twisti
parents:
1748
diff
changeset
|
2358 vminfo = adapter_unbox_subword_vminfo(dest); |
710 | 2359 break; |
2360 case 2: | |
2361 ek_opt = _adapter_opt_unboxl; | |
2362 break; | |
2363 default: | |
3371
fabcf26ee72f
6998541: JSR 292 implement missing return-type conversion for OP_RETYPE_RAW
twisti
parents:
3363
diff
changeset
|
2364 goto throw_not_impl; |
710 | 2365 break; |
2366 } | |
2367 } | |
2368 break; | |
2369 | |
2370 case _adapter_prim_to_ref: | |
3363
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6939861: JVM should handle more conversion operations
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diff
changeset
|
2371 { |
167b70ff3abc
6939861: JVM should handle more conversion operations
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diff
changeset
|
2372 assert(UseRicochetFrames, "else don't come here"); |
167b70ff3abc
6939861: JVM should handle more conversion operations
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parents:
3274
diff
changeset
|
2373 // vminfo will be the location to insert the return value |
167b70ff3abc
6939861: JVM should handle more conversion operations
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diff
changeset
|
2374 vminfo = argslot; |
167b70ff3abc
6939861: JVM should handle more conversion operations
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parents:
3274
diff
changeset
|
2375 ek_opt = _adapter_opt_collect_ref; |
167b70ff3abc
6939861: JVM should handle more conversion operations
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diff
changeset
|
2376 ensure_vmlayout_field(target, CHECK); |
3371
fabcf26ee72f
6998541: JSR 292 implement missing return-type conversion for OP_RETYPE_RAW
twisti
parents:
3363
diff
changeset
|
2377 // for MethodHandleWalk: |
fabcf26ee72f
6998541: JSR 292 implement missing return-type conversion for OP_RETYPE_RAW
twisti
parents:
3363
diff
changeset
|
2378 if (java_lang_invoke_AdapterMethodHandle::is_instance(argument())) |
fabcf26ee72f
6998541: JSR 292 implement missing return-type conversion for OP_RETYPE_RAW
twisti
parents:
3363
diff
changeset
|
2379 ensure_vmlayout_field(argument, CHECK); |
3363
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3274
diff
changeset
|
2380 if (!OptimizeMethodHandles) break; |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3274
diff
changeset
|
2381 switch (type2size[src]) { |
167b70ff3abc
6939861: JVM should handle more conversion operations
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parents:
3274
diff
changeset
|
2382 case 1: |
167b70ff3abc
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diff
changeset
|
2383 ek_try = EntryKind(_adapter_opt_filter_S0_ref + argslot); |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3274
diff
changeset
|
2384 if (ek_try < _adapter_opt_collect_LAST && |
167b70ff3abc
6939861: JVM should handle more conversion operations
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parents:
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diff
changeset
|
2385 ek_adapter_opt_collect_slot(ek_try) == argslot) { |
167b70ff3abc
6939861: JVM should handle more conversion operations
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parents:
3274
diff
changeset
|
2386 assert(ek_adapter_opt_collect_count(ek_try) == 1 && |
167b70ff3abc
6939861: JVM should handle more conversion operations
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parents:
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diff
changeset
|
2387 ek_adapter_opt_collect_type(ek_try) == T_OBJECT, ""); |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3274
diff
changeset
|
2388 ek_opt = ek_try; |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3274
diff
changeset
|
2389 break; |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3274
diff
changeset
|
2390 } |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3274
diff
changeset
|
2391 // else downgrade to variable slot: |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3274
diff
changeset
|
2392 ek_opt = _adapter_opt_collect_1_ref; |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3274
diff
changeset
|
2393 break; |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3274
diff
changeset
|
2394 case 2: |
167b70ff3abc
6939861: JVM should handle more conversion operations
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parents:
3274
diff
changeset
|
2395 ek_try = EntryKind(_adapter_opt_collect_2_S0_ref + argslot); |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3274
diff
changeset
|
2396 if (ek_try < _adapter_opt_collect_LAST && |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3274
diff
changeset
|
2397 ek_adapter_opt_collect_slot(ek_try) == argslot) { |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3274
diff
changeset
|
2398 assert(ek_adapter_opt_collect_count(ek_try) == 2 && |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3274
diff
changeset
|
2399 ek_adapter_opt_collect_type(ek_try) == T_OBJECT, ""); |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3274
diff
changeset
|
2400 ek_opt = ek_try; |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3274
diff
changeset
|
2401 break; |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3274
diff
changeset
|
2402 } |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3274
diff
changeset
|
2403 // else downgrade to variable slot: |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3274
diff
changeset
|
2404 ek_opt = _adapter_opt_collect_2_ref; |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3274
diff
changeset
|
2405 break; |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3274
diff
changeset
|
2406 default: |
3371
fabcf26ee72f
6998541: JSR 292 implement missing return-type conversion for OP_RETYPE_RAW
twisti
parents:
3363
diff
changeset
|
2407 goto throw_not_impl; |
3363
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3274
diff
changeset
|
2408 break; |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3274
diff
changeset
|
2409 } |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3274
diff
changeset
|
2410 } |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3274
diff
changeset
|
2411 break; |
710 | 2412 |
2413 case _adapter_swap_args: | |
2414 case _adapter_rot_args: | |
2415 { | |
2416 int swap_slots = type2size[src]; | |
2417 int src_slot = argslot; | |
2418 int dest_slot = vminfo; | |
2419 int rotate = (ek_orig == _adapter_swap_args) ? 0 : (src_slot > dest_slot) ? 1 : -1; | |
2420 switch (swap_slots) { | |
2421 case 1: | |
2422 ek_opt = (!rotate ? _adapter_opt_swap_1 : | |
2423 rotate > 0 ? _adapter_opt_rot_1_up : _adapter_opt_rot_1_down); | |
2424 break; | |
2425 case 2: | |
2426 ek_opt = (!rotate ? _adapter_opt_swap_2 : | |
2427 rotate > 0 ? _adapter_opt_rot_2_up : _adapter_opt_rot_2_down); | |
2428 break; | |
2429 default: | |
3371
fabcf26ee72f
6998541: JSR 292 implement missing return-type conversion for OP_RETYPE_RAW
twisti
parents:
3363
diff
changeset
|
2430 goto throw_not_impl; |
710 | 2431 break; |
2432 } | |
2433 } | |
2434 break; | |
2435 | |
2436 case _adapter_spread_args: | |
2437 { | |
3363
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3274
diff
changeset
|
2438 #ifdef TARGET_ARCH_NYI_6939861 |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3274
diff
changeset
|
2439 // ports before 6939861 supported only three kinds of spread ops |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3274
diff
changeset
|
2440 if (!UseRicochetFrames) { |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3274
diff
changeset
|
2441 int array_size = slots_pushed + 1; |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3274
diff
changeset
|
2442 assert(array_size >= 0, ""); |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3274
diff
changeset
|
2443 vminfo = array_size; |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3274
diff
changeset
|
2444 switch (array_size) { |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3274
diff
changeset
|
2445 case 0: ek_opt = _adapter_opt_spread_0; break; |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3274
diff
changeset
|
2446 case 1: ek_opt = _adapter_opt_spread_1; break; |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3274
diff
changeset
|
2447 default: ek_opt = _adapter_opt_spread_more; break; |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3274
diff
changeset
|
2448 } |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3274
diff
changeset
|
2449 break; |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3274
diff
changeset
|
2450 } |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3274
diff
changeset
|
2451 #endif //TARGET_ARCH_NYI_6939861 |
710 | 2452 // vminfo will be the required length of the array |
3363
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3274
diff
changeset
|
2453 int array_size = (slots_pushed + 1) / (type2size[dest] == 2 ? 2 : 1); |
710 | 2454 vminfo = array_size; |
3363
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3274
diff
changeset
|
2455 // general case |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3274
diff
changeset
|
2456 switch (dest) { |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3274
diff
changeset
|
2457 case T_BOOLEAN : // fall through to T_BYTE: |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3274
diff
changeset
|
2458 case T_BYTE : ek_opt = _adapter_opt_spread_byte; break; |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3274
diff
changeset
|
2459 case T_CHAR : ek_opt = _adapter_opt_spread_char; break; |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3274
diff
changeset
|
2460 case T_SHORT : ek_opt = _adapter_opt_spread_short; break; |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3274
diff
changeset
|
2461 case T_INT : ek_opt = _adapter_opt_spread_int; break; |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3274
diff
changeset
|
2462 case T_LONG : ek_opt = _adapter_opt_spread_long; break; |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3274
diff
changeset
|
2463 case T_FLOAT : ek_opt = _adapter_opt_spread_float; break; |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3274
diff
changeset
|
2464 case T_DOUBLE : ek_opt = _adapter_opt_spread_double; break; |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3274
diff
changeset
|
2465 case T_OBJECT : ek_opt = _adapter_opt_spread_ref; break; |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3274
diff
changeset
|
2466 case T_VOID : if (array_size != 0) goto throw_not_impl; |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3274
diff
changeset
|
2467 ek_opt = _adapter_opt_spread_ref; break; |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3274
diff
changeset
|
2468 default : goto throw_not_impl; |
710 | 2469 } |
3363
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3274
diff
changeset
|
2470 assert(array_size == 0 || // it doesn't matter what the spreader is |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3274
diff
changeset
|
2471 (ek_adapter_opt_spread_count(ek_opt) == -1 && |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3274
diff
changeset
|
2472 (ek_adapter_opt_spread_type(ek_opt) == dest || |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3274
diff
changeset
|
2473 (ek_adapter_opt_spread_type(ek_opt) == T_BYTE && dest == T_BOOLEAN))), |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3274
diff
changeset
|
2474 err_msg("dest=%d ek_opt=%d", dest, ek_opt)); |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3274
diff
changeset
|
2475 |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3274
diff
changeset
|
2476 if (array_size <= 0) { |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3274
diff
changeset
|
2477 // since the general case does not handle length 0, this case is required: |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3274
diff
changeset
|
2478 ek_opt = _adapter_opt_spread_0; |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3274
diff
changeset
|
2479 break; |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3274
diff
changeset
|
2480 } |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3274
diff
changeset
|
2481 if (dest == T_OBJECT) { |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3274
diff
changeset
|
2482 ek_try = EntryKind(_adapter_opt_spread_1_ref - 1 + array_size); |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3274
diff
changeset
|
2483 if (ek_try < _adapter_opt_spread_LAST && |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3274
diff
changeset
|
2484 ek_adapter_opt_spread_count(ek_try) == array_size) { |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3274
diff
changeset
|
2485 assert(ek_adapter_opt_spread_type(ek_try) == dest, ""); |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3274
diff
changeset
|
2486 ek_opt = ek_try; |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3274
diff
changeset
|
2487 break; |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3274
diff
changeset
|
2488 } |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3274
diff
changeset
|
2489 } |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3274
diff
changeset
|
2490 break; |
710 | 2491 } |
2492 break; | |
2493 | |
3363
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3274
diff
changeset
|
2494 case _adapter_collect_args: |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3274
diff
changeset
|
2495 { |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3274
diff
changeset
|
2496 assert(UseRicochetFrames, "else don't come here"); |
3371
fabcf26ee72f
6998541: JSR 292 implement missing return-type conversion for OP_RETYPE_RAW
twisti
parents:
3363
diff
changeset
|
2497 int elem_slots = argument_slot_count(java_lang_invoke_MethodHandle::type(argument())); |
3363
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3274
diff
changeset
|
2498 // vminfo will be the location to insert the return value |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3274
diff
changeset
|
2499 vminfo = argslot; |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3274
diff
changeset
|
2500 ensure_vmlayout_field(target, CHECK); |
3371
fabcf26ee72f
6998541: JSR 292 implement missing return-type conversion for OP_RETYPE_RAW
twisti
parents:
3363
diff
changeset
|
2501 ensure_vmlayout_field(argument, CHECK); |
3363
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3274
diff
changeset
|
2502 |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3274
diff
changeset
|
2503 // general case: |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3274
diff
changeset
|
2504 switch (dest) { |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3274
diff
changeset
|
2505 default : if (!is_subword_type(dest)) goto throw_not_impl; |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3274
diff
changeset
|
2506 // else fall through: |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3274
diff
changeset
|
2507 case T_INT : ek_opt = _adapter_opt_collect_int; break; |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3274
diff
changeset
|
2508 case T_LONG : ek_opt = _adapter_opt_collect_long; break; |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3274
diff
changeset
|
2509 case T_FLOAT : ek_opt = _adapter_opt_collect_float; break; |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3274
diff
changeset
|
2510 case T_DOUBLE : ek_opt = _adapter_opt_collect_double; break; |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3274
diff
changeset
|
2511 case T_OBJECT : ek_opt = _adapter_opt_collect_ref; break; |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3274
diff
changeset
|
2512 case T_VOID : ek_opt = _adapter_opt_collect_void; break; |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3274
diff
changeset
|
2513 } |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3274
diff
changeset
|
2514 assert(ek_adapter_opt_collect_slot(ek_opt) == -1 && |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3274
diff
changeset
|
2515 ek_adapter_opt_collect_count(ek_opt) == -1 && |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3274
diff
changeset
|
2516 (ek_adapter_opt_collect_type(ek_opt) == dest || |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3274
diff
changeset
|
2517 ek_adapter_opt_collect_type(ek_opt) == T_INT && is_subword_type(dest)), |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3274
diff
changeset
|
2518 ""); |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3274
diff
changeset
|
2519 |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3274
diff
changeset
|
2520 if (dest == T_OBJECT && elem_slots == 1 && OptimizeMethodHandles) { |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3274
diff
changeset
|
2521 // filter operation on a ref |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3274
diff
changeset
|
2522 ek_try = EntryKind(_adapter_opt_filter_S0_ref + argslot); |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3274
diff
changeset
|
2523 if (ek_try < _adapter_opt_collect_LAST && |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3274
diff
changeset
|
2524 ek_adapter_opt_collect_slot(ek_try) == argslot) { |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3274
diff
changeset
|
2525 assert(ek_adapter_opt_collect_count(ek_try) == elem_slots && |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3274
diff
changeset
|
2526 ek_adapter_opt_collect_type(ek_try) == dest, ""); |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3274
diff
changeset
|
2527 ek_opt = ek_try; |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3274
diff
changeset
|
2528 break; |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3274
diff
changeset
|
2529 } |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3274
diff
changeset
|
2530 ek_opt = _adapter_opt_collect_1_ref; |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3274
diff
changeset
|
2531 break; |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3274
diff
changeset
|
2532 } |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3274
diff
changeset
|
2533 |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3274
diff
changeset
|
2534 if (dest == T_OBJECT && elem_slots == 2 && OptimizeMethodHandles) { |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3274
diff
changeset
|
2535 // filter of two arguments |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3274
diff
changeset
|
2536 ek_try = EntryKind(_adapter_opt_collect_2_S0_ref + argslot); |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3274
diff
changeset
|
2537 if (ek_try < _adapter_opt_collect_LAST && |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3274
diff
changeset
|
2538 ek_adapter_opt_collect_slot(ek_try) == argslot) { |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3274
diff
changeset
|
2539 assert(ek_adapter_opt_collect_count(ek_try) == elem_slots && |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3274
diff
changeset
|
2540 ek_adapter_opt_collect_type(ek_try) == dest, ""); |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3274
diff
changeset
|
2541 ek_opt = ek_try; |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3274
diff
changeset
|
2542 break; |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3274
diff
changeset
|
2543 } |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3274
diff
changeset
|
2544 ek_opt = _adapter_opt_collect_2_ref; |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3274
diff
changeset
|
2545 break; |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3274
diff
changeset
|
2546 } |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3274
diff
changeset
|
2547 |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3274
diff
changeset
|
2548 if (dest == T_OBJECT && OptimizeMethodHandles) { |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3274
diff
changeset
|
2549 // try to use a fixed length adapter |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3274
diff
changeset
|
2550 ek_try = EntryKind(_adapter_opt_collect_0_ref + elem_slots); |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3274
diff
changeset
|
2551 if (ek_try < _adapter_opt_collect_LAST && |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3274
diff
changeset
|
2552 ek_adapter_opt_collect_count(ek_try) == elem_slots) { |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3274
diff
changeset
|
2553 assert(ek_adapter_opt_collect_slot(ek_try) == -1 && |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3274
diff
changeset
|
2554 ek_adapter_opt_collect_type(ek_try) == dest, ""); |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3274
diff
changeset
|
2555 ek_opt = ek_try; |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3274
diff
changeset
|
2556 break; |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3274
diff
changeset
|
2557 } |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3274
diff
changeset
|
2558 } |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3274
diff
changeset
|
2559 |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3274
diff
changeset
|
2560 break; |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3274
diff
changeset
|
2561 } |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3274
diff
changeset
|
2562 |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3274
diff
changeset
|
2563 case _adapter_fold_args: |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3274
diff
changeset
|
2564 { |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3274
diff
changeset
|
2565 assert(UseRicochetFrames, "else don't come here"); |
3371
fabcf26ee72f
6998541: JSR 292 implement missing return-type conversion for OP_RETYPE_RAW
twisti
parents:
3363
diff
changeset
|
2566 int elem_slots = argument_slot_count(java_lang_invoke_MethodHandle::type(argument())); |
3363
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3274
diff
changeset
|
2567 // vminfo will be the location to insert the return value |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3274
diff
changeset
|
2568 vminfo = argslot + elem_slots; |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3274
diff
changeset
|
2569 ensure_vmlayout_field(target, CHECK); |
3371
fabcf26ee72f
6998541: JSR 292 implement missing return-type conversion for OP_RETYPE_RAW
twisti
parents:
3363
diff
changeset
|
2570 ensure_vmlayout_field(argument, CHECK); |
3363
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3274
diff
changeset
|
2571 |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3274
diff
changeset
|
2572 switch (dest) { |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3274
diff
changeset
|
2573 default : if (!is_subword_type(dest)) goto throw_not_impl; |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3274
diff
changeset
|
2574 // else fall through: |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3274
diff
changeset
|
2575 case T_INT : ek_opt = _adapter_opt_fold_int; break; |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3274
diff
changeset
|
2576 case T_LONG : ek_opt = _adapter_opt_fold_long; break; |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3274
diff
changeset
|
2577 case T_FLOAT : ek_opt = _adapter_opt_fold_float; break; |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3274
diff
changeset
|
2578 case T_DOUBLE : ek_opt = _adapter_opt_fold_double; break; |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3274
diff
changeset
|
2579 case T_OBJECT : ek_opt = _adapter_opt_fold_ref; break; |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3274
diff
changeset
|
2580 case T_VOID : ek_opt = _adapter_opt_fold_void; break; |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3274
diff
changeset
|
2581 } |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3274
diff
changeset
|
2582 assert(ek_adapter_opt_collect_slot(ek_opt) == -1 && |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3274
diff
changeset
|
2583 ek_adapter_opt_collect_count(ek_opt) == -1 && |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3274
diff
changeset
|
2584 (ek_adapter_opt_collect_type(ek_opt) == dest || |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3274
diff
changeset
|
2585 ek_adapter_opt_collect_type(ek_opt) == T_INT && is_subword_type(dest)), |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3274
diff
changeset
|
2586 ""); |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3274
diff
changeset
|
2587 |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3274
diff
changeset
|
2588 if (dest == T_OBJECT && elem_slots == 0 && OptimizeMethodHandles) { |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3274
diff
changeset
|
2589 // if there are no args, just pretend it's a collect |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3274
diff
changeset
|
2590 ek_opt = _adapter_opt_collect_0_ref; |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3274
diff
changeset
|
2591 break; |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3274
diff
changeset
|
2592 } |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3274
diff
changeset
|
2593 |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3274
diff
changeset
|
2594 if (dest == T_OBJECT && OptimizeMethodHandles) { |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3274
diff
changeset
|
2595 // try to use a fixed length adapter |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3274
diff
changeset
|
2596 ek_try = EntryKind(_adapter_opt_fold_1_ref - 1 + elem_slots); |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3274
diff
changeset
|
2597 if (ek_try < _adapter_opt_fold_LAST && |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3274
diff
changeset
|
2598 ek_adapter_opt_collect_count(ek_try) == elem_slots) { |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3274
diff
changeset
|
2599 assert(ek_adapter_opt_collect_slot(ek_try) == -1 && |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3274
diff
changeset
|
2600 ek_adapter_opt_collect_type(ek_try) == dest, ""); |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3274
diff
changeset
|
2601 ek_opt = ek_try; |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3274
diff
changeset
|
2602 break; |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3274
diff
changeset
|
2603 } |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3274
diff
changeset
|
2604 } |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3274
diff
changeset
|
2605 |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3274
diff
changeset
|
2606 break; |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3274
diff
changeset
|
2607 } |
710 | 2608 |
2609 default: | |
2610 // should have failed much earlier; must be a missing case here | |
2611 assert(false, "incomplete switch"); | |
2612 // and fall through: | |
2613 | |
2614 throw_not_impl: | |
3363
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3274
diff
changeset
|
2615 if (err == NULL) |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3274
diff
changeset
|
2616 err = "unknown adapter type"; |
710 | 2617 break; |
2618 } | |
2619 | |
3371
fabcf26ee72f
6998541: JSR 292 implement missing return-type conversion for OP_RETYPE_RAW
twisti
parents:
3363
diff
changeset
|
2620 if (err == NULL && (vminfo & CONV_VMINFO_MASK) != vminfo) { |
3363
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3274
diff
changeset
|
2621 // should not happen, since vminfo is used to encode arg/slot indexes < 255 |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3274
diff
changeset
|
2622 err = "vminfo overflow"; |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3274
diff
changeset
|
2623 } |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3274
diff
changeset
|
2624 |
3371
fabcf26ee72f
6998541: JSR 292 implement missing return-type conversion for OP_RETYPE_RAW
twisti
parents:
3363
diff
changeset
|
2625 if (err == NULL && !have_entry(ek_opt)) { |
3363
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3274
diff
changeset
|
2626 err = "adapter stub for this kind of method handle is missing"; |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3274
diff
changeset
|
2627 } |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3274
diff
changeset
|
2628 |
3371
fabcf26ee72f
6998541: JSR 292 implement missing return-type conversion for OP_RETYPE_RAW
twisti
parents:
3363
diff
changeset
|
2629 if (err == NULL && ek_opt == ek_orig) { |
fabcf26ee72f
6998541: JSR 292 implement missing return-type conversion for OP_RETYPE_RAW
twisti
parents:
3363
diff
changeset
|
2630 switch (ek_opt) { |
fabcf26ee72f
6998541: JSR 292 implement missing return-type conversion for OP_RETYPE_RAW
twisti
parents:
3363
diff
changeset
|
2631 case _adapter_prim_to_prim: |
fabcf26ee72f
6998541: JSR 292 implement missing return-type conversion for OP_RETYPE_RAW
twisti
parents:
3363
diff
changeset
|
2632 case _adapter_ref_to_prim: |
fabcf26ee72f
6998541: JSR 292 implement missing return-type conversion for OP_RETYPE_RAW
twisti
parents:
3363
diff
changeset
|
2633 case _adapter_prim_to_ref: |
fabcf26ee72f
6998541: JSR 292 implement missing return-type conversion for OP_RETYPE_RAW
twisti
parents:
3363
diff
changeset
|
2634 case _adapter_swap_args: |
fabcf26ee72f
6998541: JSR 292 implement missing return-type conversion for OP_RETYPE_RAW
twisti
parents:
3363
diff
changeset
|
2635 case _adapter_rot_args: |
fabcf26ee72f
6998541: JSR 292 implement missing return-type conversion for OP_RETYPE_RAW
twisti
parents:
3363
diff
changeset
|
2636 case _adapter_collect_args: |
fabcf26ee72f
6998541: JSR 292 implement missing return-type conversion for OP_RETYPE_RAW
twisti
parents:
3363
diff
changeset
|
2637 case _adapter_fold_args: |
fabcf26ee72f
6998541: JSR 292 implement missing return-type conversion for OP_RETYPE_RAW
twisti
parents:
3363
diff
changeset
|
2638 case _adapter_spread_args: |
fabcf26ee72f
6998541: JSR 292 implement missing return-type conversion for OP_RETYPE_RAW
twisti
parents:
3363
diff
changeset
|
2639 // should be handled completely by optimized cases; see above |
fabcf26ee72f
6998541: JSR 292 implement missing return-type conversion for OP_RETYPE_RAW
twisti
parents:
3363
diff
changeset
|
2640 err = "init_AdapterMethodHandle should not issue this"; |
fabcf26ee72f
6998541: JSR 292 implement missing return-type conversion for OP_RETYPE_RAW
twisti
parents:
3363
diff
changeset
|
2641 break; |
fabcf26ee72f
6998541: JSR 292 implement missing return-type conversion for OP_RETYPE_RAW
twisti
parents:
3363
diff
changeset
|
2642 } |
fabcf26ee72f
6998541: JSR 292 implement missing return-type conversion for OP_RETYPE_RAW
twisti
parents:
3363
diff
changeset
|
2643 } |
fabcf26ee72f
6998541: JSR 292 implement missing return-type conversion for OP_RETYPE_RAW
twisti
parents:
3363
diff
changeset
|
2644 |
710 | 2645 if (err != NULL) { |
3442
f7d55ea6ee56
7045514: SPARC assembly code for JSR 292 ricochet frames
never
parents:
3417
diff
changeset
|
2646 throw_InternalError_for_bad_conversion(conversion, err_msg("%s: conv_op %d ek_opt %d", err, conv_op, ek_opt), THREAD); |
710 | 2647 return; |
2648 } | |
2649 | |
2650 // Rebuild the conversion value; maybe parts of it were changed. | |
2651 jint new_conversion = adapter_conversion(conv_op, src, dest, stack_move, vminfo); | |
2652 | |
2653 // Finalize the conversion field. (Note that it is final to Java code.) | |
2357
8033953d67ff
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
2356
diff
changeset
|
2654 java_lang_invoke_AdapterMethodHandle::set_conversion(mh(), new_conversion); |
710 | 2655 |
2656 // Done! | |
2357
8033953d67ff
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
2356
diff
changeset
|
2657 java_lang_invoke_MethodHandle::set_vmentry(mh(), entry(ek_opt)); |
710 | 2658 |
2659 // There should be enough memory barriers on exit from native methods | |
2660 // to ensure that the MH is fully initialized to all threads before | |
2661 // Java code can publish it in global data structures. | |
2662 } | |
2663 | |
3363
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3274
diff
changeset
|
2664 void MethodHandles::ensure_vmlayout_field(Handle target, TRAPS) { |
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2665 Handle mtype(THREAD, java_lang_invoke_MethodHandle::type(target())); |
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2666 Handle mtform(THREAD, java_lang_invoke_MethodType::form(mtype())); |
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2667 if (mtform.is_null()) { THROW(vmSymbols::java_lang_InternalError()); } |
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2668 if (java_lang_invoke_MethodTypeForm::vmlayout_offset_in_bytes() > 0) { |
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2669 if (java_lang_invoke_MethodTypeForm::vmlayout(mtform()) == NULL) { |
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|
2670 // fill it in |
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2671 Handle erased_mtype(THREAD, java_lang_invoke_MethodTypeForm::erasedType(mtform())); |
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|
2672 TempNewSymbol erased_signature |
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|
2673 = java_lang_invoke_MethodType::as_signature(erased_mtype(), /*intern:*/true, CHECK); |
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|
2674 methodOop cookie |
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|
2675 = SystemDictionary::find_method_handle_invoke(vmSymbols::invokeExact_name(), |
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|
2676 erased_signature, |
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|
2677 SystemDictionaryHandles::Object_klass(), |
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|
2678 THREAD); |
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|
2679 java_lang_invoke_MethodTypeForm::init_vmlayout(mtform(), cookie); |
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|
2680 } |
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|
2681 } |
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|
2682 } |
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|
2683 |
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2684 #ifdef ASSERT |
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2685 |
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2686 extern "C" |
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|
2687 void print_method_handle(oop mh); |
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2688 |
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|
2689 static void stress_method_handle_walk_impl(Handle mh, TRAPS) { |
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|
2690 if (StressMethodHandleWalk) { |
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|
2691 // Exercise the MethodHandleWalk code in various ways and validate |
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2692 // the resulting method oop. Some of these produce output so they |
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|
2693 // are guarded under Verbose. |
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|
2694 ResourceMark rm; |
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|
2695 HandleMark hm; |
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|
2696 if (Verbose) { |
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|
2697 print_method_handle(mh()); |
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|
2698 } |
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|
2699 TempNewSymbol name = SymbolTable::new_symbol("invoke", CHECK); |
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2700 Handle mt = java_lang_invoke_MethodHandle::type(mh()); |
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2701 TempNewSymbol signature = java_lang_invoke_MethodType::as_signature(mt(), true, CHECK); |
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2702 MethodHandleCompiler mhc(mh, name, signature, 10000, false, CHECK); |
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2703 methodHandle m = mhc.compile(CHECK); |
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|
2704 if (Verbose) { |
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|
2705 m->print_codes(); |
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|
2706 } |
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|
2707 InterpreterOopMap mask; |
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|
2708 OopMapCache::compute_one_oop_map(m, m->code_size() - 1, &mask); |
3461
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2709 // compile to object code if -Xcomp or WizardMode |
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|
2710 if ((WizardMode || |
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|
2711 CompilationPolicy::must_be_compiled(m)) |
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2712 && !instanceKlass::cast(m->method_holder())->is_not_initialized() |
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2713 && CompilationPolicy::can_be_compiled(m)) { |
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|
2714 // Force compilation |
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|
2715 CompileBroker::compile_method(m, InvocationEntryBci, |
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|
2716 CompLevel_initial_compile, |
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2717 methodHandle(), 0, "StressMethodHandleWalk", |
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|
2718 CHECK); |
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|
2719 } |
3388
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|
2720 } |
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|
2721 } |
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|
2722 |
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|
2723 static void stress_method_handle_walk(Handle mh, TRAPS) { |
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|
2724 stress_method_handle_walk_impl(mh, THREAD); |
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|
2725 if (HAS_PENDING_EXCEPTION) { |
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|
2726 oop ex = PENDING_EXCEPTION; |
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|
2727 CLEAR_PENDING_EXCEPTION; |
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|
2728 tty->print("StressMethodHandleWalk: "); |
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|
2729 java_lang_Throwable::print(ex, tty); |
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|
2730 tty->cr(); |
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|
2731 } |
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|
2732 } |
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|
2733 #else |
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|
2734 |
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|
2735 static void stress_method_handle_walk(Handle mh, TRAPS) {} |
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|
2736 |
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|
2737 #endif |
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|
2738 |
710 | 2739 // |
2357
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|
2740 // Here are the native methods on sun.invoke.MethodHandleImpl. |
710 | 2741 // They are the private interface between this JVM and the HotSpot-specific |
2742 // Java code that implements JSR 292 method handles. | |
2743 // | |
2744 // Note: We use a JVM_ENTRY macro to define each of these, for this is the way | |
2745 // that intrinsic (non-JNI) native methods are defined in HotSpot. | |
2746 // | |
2747 | |
2748 // direct method handles for invokestatic or invokespecial | |
2749 // void init(DirectMethodHandle self, MemberName ref, boolean doDispatch, Class<?> caller); | |
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2750 JVM_ENTRY(void, MHN_init_DMH(JNIEnv *env, jobject igcls, jobject mh_jh, |
710 | 2751 jobject target_jh, jboolean do_dispatch, jobject caller_jh)) { |
2752 ResourceMark rm; // for error messages | |
2753 | |
2754 // This is the guy we are initializing: | |
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|
2755 if (mh_jh == NULL) { THROW_MSG(vmSymbols::java_lang_InternalError(), "self is null"); } |
710 | 2756 Handle mh(THREAD, JNIHandles::resolve_non_null(mh_jh)); |
2757 | |
2758 // Early returns out of this method leave the DMH in an unfinished state. | |
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|
2759 assert(java_lang_invoke_MethodHandle::vmentry(mh()) == NULL, "must be safely null"); |
710 | 2760 |
2761 // which method are we really talking about? | |
3412
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|
2762 if (target_jh == NULL) { THROW_MSG(vmSymbols::java_lang_InternalError(), "target is null"); } |
3274
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|
2763 Handle target(THREAD, JNIHandles::resolve_non_null(target_jh)); |
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|
2764 if (java_lang_invoke_MemberName::is_instance(target()) && |
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|
2765 java_lang_invoke_MemberName::vmindex(target()) == VM_INDEX_UNINITIALIZED) { |
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|
2766 MethodHandles::resolve_MemberName(target, CHECK); |
710 | 2767 } |
2768 | |
3274
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|
2769 KlassHandle receiver_limit; int decode_flags = 0; |
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|
2770 methodHandle m = MethodHandles::decode_method(target(), receiver_limit, decode_flags); |
710 | 2771 if (m.is_null()) { THROW_MSG(vmSymbols::java_lang_InternalError(), "no such method"); } |
2772 | |
2773 // The trusted Java code that calls this method should already have performed | |
2774 // access checks on behalf of the given caller. But, we can verify this. | |
2775 if (VerifyMethodHandles && caller_jh != NULL) { | |
2776 KlassHandle caller(THREAD, java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(caller_jh))); | |
2777 // If this were a bytecode, the first access check would be against | |
2778 // the "reference class" mentioned in the CONSTANT_Methodref. | |
1507
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|
2779 // We don't know at this point which class that was, and if we |
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|
2780 // check against m.method_holder we might get the wrong answer. |
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|
2781 // So we just make sure to handle this check when the resolution |
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|
2782 // happens, when we call resolve_MemberName. |
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|
2783 // |
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|
2784 // (A public class can inherit public members from private supers, |
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|
2785 // and it would be wrong to check access against the private super |
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|
2786 // if the original symbolic reference was against the public class.) |
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|
2787 // |
710 | 2788 // If there were a bytecode, the next step would be to lookup the method |
2789 // in the reference class, then then check the method's access bits. | |
2790 // Emulate LinkResolver::check_method_accessability. | |
2791 klassOop resolved_klass = m->method_holder(); | |
2792 if (!Reflection::verify_field_access(caller->as_klassOop(), | |
1507
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|
2793 resolved_klass, resolved_klass, |
710 | 2794 m->access_flags(), |
2795 true)) { | |
2796 // %%% following cutout belongs in Reflection::verify_field_access? | |
2797 bool same_pm = Reflection::is_same_package_member(caller->as_klassOop(), | |
1507
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|
2798 resolved_klass, THREAD); |
710 | 2799 if (!same_pm) { |
2800 THROW_MSG(vmSymbols::java_lang_InternalError(), m->name_and_sig_as_C_string()); | |
2801 } | |
2802 } | |
2803 } | |
2804 | |
2805 MethodHandles::init_DirectMethodHandle(mh, m, (do_dispatch != JNI_FALSE), CHECK); | |
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|
2806 stress_method_handle_walk(mh, CHECK); |
710 | 2807 } |
2808 JVM_END | |
2809 | |
2810 // bound method handles | |
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2811 JVM_ENTRY(void, MHN_init_BMH(JNIEnv *env, jobject igcls, jobject mh_jh, |
710 | 2812 jobject target_jh, int argnum)) { |
2813 ResourceMark rm; // for error messages | |
2814 | |
2815 // This is the guy we are initializing: | |
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|
2816 if (mh_jh == NULL) { THROW_MSG(vmSymbols::java_lang_InternalError(), "self is null"); } |
710 | 2817 Handle mh(THREAD, JNIHandles::resolve_non_null(mh_jh)); |
2818 | |
2819 // Early returns out of this method leave the BMH in an unfinished state. | |
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|
2820 assert(java_lang_invoke_MethodHandle::vmentry(mh()) == NULL, "must be safely null"); |
710 | 2821 |
3412
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|
2822 if (target_jh == NULL) { THROW_MSG(vmSymbols::java_lang_InternalError(), "target is null"); } |
710 | 2823 Handle target(THREAD, JNIHandles::resolve_non_null(target_jh)); |
2824 | |
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|
2825 if (!java_lang_invoke_MethodHandle::is_instance(target())) { |
710 | 2826 // Target object is a reflective method. (%%% Do we need this alternate path?) |
2827 Untested("init_BMH of non-MH"); | |
2828 if (argnum != 0) { THROW(vmSymbols::java_lang_InternalError()); } | |
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|
2829 KlassHandle receiver_limit; int decode_flags = 0; |
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|
2830 methodHandle m = MethodHandles::decode_method(target(), receiver_limit, decode_flags); |
710 | 2831 MethodHandles::init_BoundMethodHandle_with_receiver(mh, m, |
2832 receiver_limit, | |
2833 decode_flags, | |
2834 CHECK); | |
3388
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|
2835 } else { |
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changeset
|
2836 // Build a BMH on top of a DMH or another BMH: |
a80577f854f9
7045513: JSR 292 inlining causes crashes in methodHandleWalk.cpp
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changeset
|
2837 MethodHandles::init_BoundMethodHandle(mh, target, argnum, CHECK); |
710 | 2838 } |
3461
81d815b05abb
7056328: JSR 292 invocation sometimes fails in adapters for types not on boot class path
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3451
diff
changeset
|
2839 |
81d815b05abb
7056328: JSR 292 invocation sometimes fails in adapters for types not on boot class path
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diff
changeset
|
2840 if (StressMethodHandleWalk) { |
81d815b05abb
7056328: JSR 292 invocation sometimes fails in adapters for types not on boot class path
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|
2841 if (mh->klass() == SystemDictionary::BoundMethodHandle_klass()) |
81d815b05abb
7056328: JSR 292 invocation sometimes fails in adapters for types not on boot class path
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parents:
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|
2842 stress_method_handle_walk(mh, CHECK); |
81d815b05abb
7056328: JSR 292 invocation sometimes fails in adapters for types not on boot class path
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changeset
|
2843 // else don't, since the subclass has not yet initialized its own fields |
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7056328: JSR 292 invocation sometimes fails in adapters for types not on boot class path
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|
2844 } |
710 | 2845 } |
2846 JVM_END | |
2847 | |
2848 // adapter method handles | |
2357
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changeset
|
2849 JVM_ENTRY(void, MHN_init_AMH(JNIEnv *env, jobject igcls, jobject mh_jh, |
710 | 2850 jobject target_jh, int argnum)) { |
2851 // This is the guy we are initializing: | |
3412
88559690c95a
7047961: JSR 292 MethodHandleWalk swap args doesn't handle T_LONG and T_DOUBLE properly
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diff
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|
2852 if (mh_jh == NULL) { THROW_MSG(vmSymbols::java_lang_InternalError(), "self is null"); } |
88559690c95a
7047961: JSR 292 MethodHandleWalk swap args doesn't handle T_LONG and T_DOUBLE properly
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|
2853 if (target_jh == NULL) { THROW_MSG(vmSymbols::java_lang_InternalError(), "target is null"); } |
710 | 2854 Handle mh(THREAD, JNIHandles::resolve_non_null(mh_jh)); |
2855 Handle target(THREAD, JNIHandles::resolve_non_null(target_jh)); | |
2856 | |
2857 // Early returns out of this method leave the AMH in an unfinished state. | |
2357
8033953d67ff
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jrose
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changeset
|
2858 assert(java_lang_invoke_MethodHandle::vmentry(mh()) == NULL, "must be safely null"); |
710 | 2859 |
2860 MethodHandles::init_AdapterMethodHandle(mh, target, argnum, CHECK); | |
3388
a80577f854f9
7045513: JSR 292 inlining causes crashes in methodHandleWalk.cpp
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3371
diff
changeset
|
2861 stress_method_handle_walk(mh, CHECK); |
710 | 2862 } |
2863 JVM_END | |
2864 | |
2865 // method type forms | |
2357
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changeset
|
2866 JVM_ENTRY(void, MHN_init_MT(JNIEnv *env, jobject igcls, jobject erased_jh)) { |
710 | 2867 if (erased_jh == NULL) return; |
2868 if (TraceMethodHandles) { | |
2869 tty->print("creating MethodType form "); | |
2870 if (WizardMode || Verbose) { // Warning: this calls Java code on the MH! | |
2871 // call Object.toString() | |
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
2116
diff
changeset
|
2872 Symbol* name = vmSymbols::toString_name(); |
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
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2116
diff
changeset
|
2873 Symbol* sig = vmSymbols::void_string_signature(); |
710 | 2874 JavaCallArguments args(Handle(THREAD, JNIHandles::resolve_non_null(erased_jh))); |
2875 JavaValue result(T_OBJECT); | |
1142 | 2876 JavaCalls::call_virtual(&result, SystemDictionary::Object_klass(), name, sig, |
710 | 2877 &args, CHECK); |
2878 Handle str(THREAD, (oop)result.get_jobject()); | |
2879 java_lang_String::print(str, tty); | |
2880 } | |
2881 tty->cr(); | |
2882 } | |
2883 } | |
2884 JVM_END | |
2885 | |
2886 // debugging and reflection | |
2357
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changeset
|
2887 JVM_ENTRY(jobject, MHN_getTarget(JNIEnv *env, jobject igcls, jobject mh_jh, jint format)) { |
710 | 2888 Handle mh(THREAD, JNIHandles::resolve(mh_jh)); |
2357
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7012648: move JSR 292 to package java.lang.invoke and adjust names
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parents:
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changeset
|
2889 if (!java_lang_invoke_MethodHandle::is_instance(mh())) { |
710 | 2890 THROW_NULL(vmSymbols::java_lang_IllegalArgumentException()); |
2891 } | |
2892 oop target = MethodHandles::encode_target(mh, format, CHECK_NULL); | |
2893 return JNIHandles::make_local(THREAD, target); | |
2894 } | |
2895 JVM_END | |
2896 | |
2357
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changeset
|
2897 JVM_ENTRY(jint, MHN_getConstant(JNIEnv *env, jobject igcls, jint which)) { |
710 | 2898 switch (which) { |
2899 case MethodHandles::GC_JVM_PUSH_LIMIT: | |
2900 guarantee(MethodHandlePushLimit >= 2 && MethodHandlePushLimit <= 0xFF, | |
2901 "MethodHandlePushLimit parameter must be in valid range"); | |
2902 return MethodHandlePushLimit; | |
1039
987e948ebbc8
6815692: method handle code needs some cleanup (post-6655638)
jrose
parents:
726
diff
changeset
|
2903 case MethodHandles::GC_JVM_STACK_MOVE_UNIT: |
710 | 2904 // return number of words per slot, signed according to stack direction |
2905 return MethodHandles::stack_move_unit(); | |
1507
cd5dbf694d45
6939134: JSR 292 adjustments to method handle invocation
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changeset
|
2906 case MethodHandles::GC_CONV_OP_IMPLEMENTED_MASK: |
cd5dbf694d45
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diff
changeset
|
2907 return MethodHandles::adapter_conversion_ops_supported_mask(); |
3449
a9b8b43b115f
7052219: JSR 292: Crash in ~BufferBlob::MethodHandles adapters
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parents:
3442
diff
changeset
|
2908 case MethodHandles::GC_OP_ROT_ARGS_DOWN_LIMIT_BIAS: |
a9b8b43b115f
7052219: JSR 292: Crash in ~BufferBlob::MethodHandles adapters
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parents:
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diff
changeset
|
2909 return MethodHandles::OP_ROT_ARGS_DOWN_LIMIT_BIAS; |
710 | 2910 } |
2911 return 0; | |
2912 } | |
2913 JVM_END | |
2914 | |
2915 #ifndef PRODUCT | |
2916 #define EACH_NAMED_CON(template) \ | |
3363
167b70ff3abc
6939861: JVM should handle more conversion operations
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parents:
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changeset
|
2917 /* hold back this one until JDK stabilizes */ \ |
167b70ff3abc
6939861: JVM should handle more conversion operations
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diff
changeset
|
2918 /* template(MethodHandles,GC_JVM_PUSH_LIMIT) */ \ |
167b70ff3abc
6939861: JVM should handle more conversion operations
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parents:
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diff
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|
2919 /* hold back this one until JDK stabilizes */ \ |
167b70ff3abc
6939861: JVM should handle more conversion operations
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parents:
3274
diff
changeset
|
2920 /* template(MethodHandles,GC_JVM_STACK_MOVE_UNIT) */ \ |
3449
a9b8b43b115f
7052219: JSR 292: Crash in ~BufferBlob::MethodHandles adapters
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parents:
3442
diff
changeset
|
2921 /* hold back this one until JDK stabilizes */ \ |
a9b8b43b115f
7052219: JSR 292: Crash in ~BufferBlob::MethodHandles adapters
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parents:
3442
diff
changeset
|
2922 /* template(MethodHandles,GC_OP_ROT_ARGS_DOWN_LIMIT_BIAS) */ \ |
710 | 2923 template(MethodHandles,ETF_HANDLE_OR_METHOD_NAME) \ |
2924 template(MethodHandles,ETF_DIRECT_HANDLE) \ | |
2925 template(MethodHandles,ETF_METHOD_NAME) \ | |
2926 template(MethodHandles,ETF_REFLECT_METHOD) \ | |
2357
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diff
changeset
|
2927 template(java_lang_invoke_MemberName,MN_IS_METHOD) \ |
8033953d67ff
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
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diff
changeset
|
2928 template(java_lang_invoke_MemberName,MN_IS_CONSTRUCTOR) \ |
8033953d67ff
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
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diff
changeset
|
2929 template(java_lang_invoke_MemberName,MN_IS_FIELD) \ |
8033953d67ff
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
2356
diff
changeset
|
2930 template(java_lang_invoke_MemberName,MN_IS_TYPE) \ |
8033953d67ff
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
2356
diff
changeset
|
2931 template(java_lang_invoke_MemberName,MN_SEARCH_SUPERCLASSES) \ |
8033953d67ff
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
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diff
changeset
|
2932 template(java_lang_invoke_MemberName,MN_SEARCH_INTERFACES) \ |
8033953d67ff
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
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diff
changeset
|
2933 template(java_lang_invoke_MemberName,VM_INDEX_UNINITIALIZED) \ |
8033953d67ff
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
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diff
changeset
|
2934 template(java_lang_invoke_AdapterMethodHandle,OP_RETYPE_ONLY) \ |
8033953d67ff
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
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diff
changeset
|
2935 template(java_lang_invoke_AdapterMethodHandle,OP_RETYPE_RAW) \ |
8033953d67ff
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
2356
diff
changeset
|
2936 template(java_lang_invoke_AdapterMethodHandle,OP_CHECK_CAST) \ |
8033953d67ff
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
2356
diff
changeset
|
2937 template(java_lang_invoke_AdapterMethodHandle,OP_PRIM_TO_PRIM) \ |
8033953d67ff
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
2356
diff
changeset
|
2938 template(java_lang_invoke_AdapterMethodHandle,OP_REF_TO_PRIM) \ |
8033953d67ff
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
2356
diff
changeset
|
2939 template(java_lang_invoke_AdapterMethodHandle,OP_PRIM_TO_REF) \ |
8033953d67ff
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
2356
diff
changeset
|
2940 template(java_lang_invoke_AdapterMethodHandle,OP_SWAP_ARGS) \ |
8033953d67ff
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
2356
diff
changeset
|
2941 template(java_lang_invoke_AdapterMethodHandle,OP_ROT_ARGS) \ |
8033953d67ff
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
2356
diff
changeset
|
2942 template(java_lang_invoke_AdapterMethodHandle,OP_DUP_ARGS) \ |
8033953d67ff
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
2356
diff
changeset
|
2943 template(java_lang_invoke_AdapterMethodHandle,OP_DROP_ARGS) \ |
8033953d67ff
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
2356
diff
changeset
|
2944 template(java_lang_invoke_AdapterMethodHandle,OP_COLLECT_ARGS) \ |
8033953d67ff
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
2356
diff
changeset
|
2945 template(java_lang_invoke_AdapterMethodHandle,OP_SPREAD_ARGS) \ |
3363
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3274
diff
changeset
|
2946 /* hold back this one until JDK stabilizes */ \ |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3274
diff
changeset
|
2947 /*template(java_lang_invoke_AdapterMethodHandle,CONV_OP_LIMIT)*/ \ |
2357
8033953d67ff
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
2356
diff
changeset
|
2948 template(java_lang_invoke_AdapterMethodHandle,CONV_OP_MASK) \ |
8033953d67ff
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
2356
diff
changeset
|
2949 template(java_lang_invoke_AdapterMethodHandle,CONV_VMINFO_MASK) \ |
8033953d67ff
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
2356
diff
changeset
|
2950 template(java_lang_invoke_AdapterMethodHandle,CONV_VMINFO_SHIFT) \ |
8033953d67ff
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
2356
diff
changeset
|
2951 template(java_lang_invoke_AdapterMethodHandle,CONV_OP_SHIFT) \ |
8033953d67ff
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
2356
diff
changeset
|
2952 template(java_lang_invoke_AdapterMethodHandle,CONV_DEST_TYPE_SHIFT) \ |
8033953d67ff
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
2356
diff
changeset
|
2953 template(java_lang_invoke_AdapterMethodHandle,CONV_SRC_TYPE_SHIFT) \ |
8033953d67ff
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
2356
diff
changeset
|
2954 template(java_lang_invoke_AdapterMethodHandle,CONV_STACK_MOVE_SHIFT) \ |
8033953d67ff
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
2356
diff
changeset
|
2955 template(java_lang_invoke_AdapterMethodHandle,CONV_STACK_MOVE_MASK) \ |
710 | 2956 /*end*/ |
2957 | |
2958 #define ONE_PLUS(scope,value) 1+ | |
2959 static const int con_value_count = EACH_NAMED_CON(ONE_PLUS) 0; | |
2960 #define VALUE_COMMA(scope,value) scope::value, | |
2961 static const int con_values[con_value_count+1] = { EACH_NAMED_CON(VALUE_COMMA) 0 }; | |
2962 #define STRING_NULL(scope,value) #value "\0" | |
2963 static const char con_names[] = { EACH_NAMED_CON(STRING_NULL) }; | |
2964 | |
2965 #undef ONE_PLUS | |
2966 #undef VALUE_COMMA | |
2967 #undef STRING_NULL | |
2968 #undef EACH_NAMED_CON | |
2969 #endif | |
2970 | |
2357
8033953d67ff
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
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diff
changeset
|
2971 JVM_ENTRY(jint, MHN_getNamedCon(JNIEnv *env, jobject igcls, jint which, jobjectArray box_jh)) { |
710 | 2972 #ifndef PRODUCT |
2973 if (which >= 0 && which < con_value_count) { | |
2974 int con = con_values[which]; | |
3274
2a23b1b5a0a8
7018355: JSR 292: VM crash in DefNewGeneration::copy_to_survivor_space
twisti
parents:
2478
diff
changeset
|
2975 objArrayHandle box(THREAD, (objArrayOop) JNIHandles::resolve(box_jh)); |
2a23b1b5a0a8
7018355: JSR 292: VM crash in DefNewGeneration::copy_to_survivor_space
twisti
parents:
2478
diff
changeset
|
2976 if (box.not_null() && box->klass() == Universe::objectArrayKlassObj() && box->length() > 0) { |
710 | 2977 const char* str = &con_names[0]; |
2978 for (int i = 0; i < which; i++) | |
2979 str += strlen(str) + 1; // skip name and null | |
3274
2a23b1b5a0a8
7018355: JSR 292: VM crash in DefNewGeneration::copy_to_survivor_space
twisti
parents:
2478
diff
changeset
|
2980 oop name = java_lang_String::create_oop_from_str(str, CHECK_0); // possible safepoint |
710 | 2981 box->obj_at_put(0, name); |
2982 } | |
2983 return con; | |
2984 } | |
2985 #endif | |
2986 return 0; | |
2987 } | |
2988 JVM_END | |
2989 | |
2990 // void init(MemberName self, AccessibleObject ref) | |
2357
8033953d67ff
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
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changeset
|
2991 JVM_ENTRY(void, MHN_init_Mem(JNIEnv *env, jobject igcls, jobject mname_jh, jobject target_jh)) { |
3412
88559690c95a
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never
parents:
3389
diff
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|
2992 if (mname_jh == NULL) { THROW_MSG(vmSymbols::java_lang_InternalError(), "mname is null"); } |
88559690c95a
7047961: JSR 292 MethodHandleWalk swap args doesn't handle T_LONG and T_DOUBLE properly
never
parents:
3389
diff
changeset
|
2993 if (target_jh == NULL) { THROW_MSG(vmSymbols::java_lang_InternalError(), "target is null"); } |
710 | 2994 Handle mname(THREAD, JNIHandles::resolve_non_null(mname_jh)); |
2995 oop target_oop = JNIHandles::resolve_non_null(target_jh); | |
2996 MethodHandles::init_MemberName(mname(), target_oop); | |
2997 } | |
2998 JVM_END | |
2999 | |
3000 // void expand(MemberName self) | |
2357
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7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
2356
diff
changeset
|
3001 JVM_ENTRY(void, MHN_expand_Mem(JNIEnv *env, jobject igcls, jobject mname_jh)) { |
3412
88559690c95a
7047961: JSR 292 MethodHandleWalk swap args doesn't handle T_LONG and T_DOUBLE properly
never
parents:
3389
diff
changeset
|
3002 if (mname_jh == NULL) { THROW_MSG(vmSymbols::java_lang_InternalError(), "mname is null"); } |
710 | 3003 Handle mname(THREAD, JNIHandles::resolve_non_null(mname_jh)); |
3004 MethodHandles::expand_MemberName(mname, 0, CHECK); | |
3005 } | |
3006 JVM_END | |
3007 | |
3008 // void resolve(MemberName self, Class<?> caller) | |
2357
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jrose
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diff
changeset
|
3009 JVM_ENTRY(void, MHN_resolve_Mem(JNIEnv *env, jobject igcls, jobject mname_jh, jclass caller_jh)) { |
3412
88559690c95a
7047961: JSR 292 MethodHandleWalk swap args doesn't handle T_LONG and T_DOUBLE properly
never
parents:
3389
diff
changeset
|
3010 if (mname_jh == NULL) { THROW_MSG(vmSymbols::java_lang_InternalError(), "mname is null"); } |
710 | 3011 Handle mname(THREAD, JNIHandles::resolve_non_null(mname_jh)); |
1507
cd5dbf694d45
6939134: JSR 292 adjustments to method handle invocation
jrose
parents:
1299
diff
changeset
|
3012 |
cd5dbf694d45
6939134: JSR 292 adjustments to method handle invocation
jrose
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1299
diff
changeset
|
3013 // The trusted Java code that calls this method should already have performed |
cd5dbf694d45
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jrose
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1299
diff
changeset
|
3014 // access checks on behalf of the given caller. But, we can verify this. |
cd5dbf694d45
6939134: JSR 292 adjustments to method handle invocation
jrose
parents:
1299
diff
changeset
|
3015 if (VerifyMethodHandles && caller_jh != NULL) { |
2357
8033953d67ff
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jrose
parents:
2356
diff
changeset
|
3016 klassOop reference_klass = java_lang_Class::as_klassOop(java_lang_invoke_MemberName::clazz(mname())); |
1507
cd5dbf694d45
6939134: JSR 292 adjustments to method handle invocation
jrose
parents:
1299
diff
changeset
|
3017 if (reference_klass != NULL) { |
cd5dbf694d45
6939134: JSR 292 adjustments to method handle invocation
jrose
parents:
1299
diff
changeset
|
3018 // Emulate LinkResolver::check_klass_accessability. |
cd5dbf694d45
6939134: JSR 292 adjustments to method handle invocation
jrose
parents:
1299
diff
changeset
|
3019 klassOop caller = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(caller_jh)); |
cd5dbf694d45
6939134: JSR 292 adjustments to method handle invocation
jrose
parents:
1299
diff
changeset
|
3020 if (!Reflection::verify_class_access(caller, |
cd5dbf694d45
6939134: JSR 292 adjustments to method handle invocation
jrose
parents:
1299
diff
changeset
|
3021 reference_klass, |
cd5dbf694d45
6939134: JSR 292 adjustments to method handle invocation
jrose
parents:
1299
diff
changeset
|
3022 true)) { |
cd5dbf694d45
6939134: JSR 292 adjustments to method handle invocation
jrose
parents:
1299
diff
changeset
|
3023 THROW_MSG(vmSymbols::java_lang_InternalError(), Klass::cast(reference_klass)->external_name()); |
cd5dbf694d45
6939134: JSR 292 adjustments to method handle invocation
jrose
parents:
1299
diff
changeset
|
3024 } |
cd5dbf694d45
6939134: JSR 292 adjustments to method handle invocation
jrose
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1299
diff
changeset
|
3025 } |
cd5dbf694d45
6939134: JSR 292 adjustments to method handle invocation
jrose
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1299
diff
changeset
|
3026 } |
cd5dbf694d45
6939134: JSR 292 adjustments to method handle invocation
jrose
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1299
diff
changeset
|
3027 |
710 | 3028 MethodHandles::resolve_MemberName(mname, CHECK); |
3029 } | |
3030 JVM_END | |
3031 | |
3032 // static native int getMembers(Class<?> defc, String matchName, String matchSig, | |
3033 // int matchFlags, Class<?> caller, int skip, MemberName[] results); | |
2357
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3034 JVM_ENTRY(jint, MHN_getMembers(JNIEnv *env, jobject igcls, |
710 | 3035 jclass clazz_jh, jstring name_jh, jstring sig_jh, |
3036 int mflags, jclass caller_jh, jint skip, jobjectArray results_jh)) { | |
3037 if (clazz_jh == NULL || results_jh == NULL) return -1; | |
3274
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7018355: JSR 292: VM crash in DefNewGeneration::copy_to_survivor_space
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diff
changeset
|
3038 KlassHandle k(THREAD, java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(clazz_jh))); |
710 | 3039 |
3274
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7018355: JSR 292: VM crash in DefNewGeneration::copy_to_survivor_space
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diff
changeset
|
3040 objArrayHandle results(THREAD, (objArrayOop) JNIHandles::resolve(results_jh)); |
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|
3041 if (results.is_null() || !results->is_objArray()) return -1; |
710 | 3042 |
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
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2116
diff
changeset
|
3043 TempNewSymbol name = NULL; |
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
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changeset
|
3044 TempNewSymbol sig = NULL; |
710 | 3045 if (name_jh != NULL) { |
3046 name = java_lang_String::as_symbol_or_null(JNIHandles::resolve_non_null(name_jh)); | |
3047 if (name == NULL) return 0; // a match is not possible | |
3048 } | |
3049 if (sig_jh != NULL) { | |
3050 sig = java_lang_String::as_symbol_or_null(JNIHandles::resolve_non_null(sig_jh)); | |
3051 if (sig == NULL) return 0; // a match is not possible | |
3052 } | |
3053 | |
3274
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changeset
|
3054 KlassHandle caller; |
710 | 3055 if (caller_jh != NULL) { |
3056 oop caller_oop = JNIHandles::resolve_non_null(caller_jh); | |
3057 if (!java_lang_Class::is_instance(caller_oop)) return -1; | |
3274
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|
3058 caller = KlassHandle(THREAD, java_lang_Class::as_klassOop(caller_oop)); |
710 | 3059 } |
3060 | |
3274
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changeset
|
3061 if (name != NULL && sig != NULL && results.not_null()) { |
710 | 3062 // try a direct resolve |
3063 // %%% TO DO | |
3064 } | |
3065 | |
3274
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|
3066 int res = MethodHandles::find_MemberNames(k(), name, sig, mflags, |
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|
3067 caller(), skip, results()); |
710 | 3068 // TO DO: expand at least some of the MemberNames, to avoid massive callbacks |
3069 return res; | |
3070 } | |
3071 JVM_END | |
3072 | |
3417
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|
3073 methodOop MethodHandles::resolve_raise_exception_method(TRAPS) { |
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|
3074 if (_raise_exception_method != NULL) { |
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changeset
|
3075 // no need to do it twice |
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|
3076 return raise_exception_method(); |
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|
3077 } |
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changeset
|
3078 // LinkResolver::resolve_invokedynamic can reach this point |
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changeset
|
3079 // because an invokedynamic has failed very early (7049415) |
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|
3080 KlassHandle MHN_klass = SystemDictionaryHandles::MethodHandleNatives_klass(); |
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|
3081 if (MHN_klass.not_null()) { |
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|
3082 TempNewSymbol raiseException_name = SymbolTable::new_symbol("raiseException", CHECK_NULL); |
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changeset
|
3083 TempNewSymbol raiseException_sig = SymbolTable::new_symbol("(ILjava/lang/Object;Ljava/lang/Object;)V", CHECK_NULL); |
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changeset
|
3084 methodOop raiseException_method = instanceKlass::cast(MHN_klass->as_klassOop()) |
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7049415: Failure of resolution of sym.reference to the c.s.s. should be wrapped in BootstrapMethodError
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|
3085 ->find_method(raiseException_name, raiseException_sig); |
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|
3086 if (raiseException_method != NULL && raiseException_method->is_static()) { |
ba550512d3b2
7049415: Failure of resolution of sym.reference to the c.s.s. should be wrapped in BootstrapMethodError
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changeset
|
3087 return raiseException_method; |
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7049415: Failure of resolution of sym.reference to the c.s.s. should be wrapped in BootstrapMethodError
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diff
changeset
|
3088 } |
ba550512d3b2
7049415: Failure of resolution of sym.reference to the c.s.s. should be wrapped in BootstrapMethodError
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diff
changeset
|
3089 } |
ba550512d3b2
7049415: Failure of resolution of sym.reference to the c.s.s. should be wrapped in BootstrapMethodError
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changeset
|
3090 // not found; let the caller deal with it |
ba550512d3b2
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changeset
|
3091 return NULL; |
ba550512d3b2
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diff
changeset
|
3092 } |
ba550512d3b2
7049415: Failure of resolution of sym.reference to the c.s.s. should be wrapped in BootstrapMethodError
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diff
changeset
|
3093 void MethodHandles::raise_exception(int code, oop actual, oop required, TRAPS) { |
ba550512d3b2
7049415: Failure of resolution of sym.reference to the c.s.s. should be wrapped in BootstrapMethodError
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diff
changeset
|
3094 methodOop raiseException_method = resolve_raise_exception_method(CHECK); |
ba550512d3b2
7049415: Failure of resolution of sym.reference to the c.s.s. should be wrapped in BootstrapMethodError
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diff
changeset
|
3095 if (raiseException_method != NULL && |
ba550512d3b2
7049415: Failure of resolution of sym.reference to the c.s.s. should be wrapped in BootstrapMethodError
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parents:
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diff
changeset
|
3096 instanceKlass::cast(raiseException_method->method_holder())->is_not_initialized()) { |
ba550512d3b2
7049415: Failure of resolution of sym.reference to the c.s.s. should be wrapped in BootstrapMethodError
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parents:
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diff
changeset
|
3097 instanceKlass::cast(raiseException_method->method_holder())->initialize(CHECK); |
ba550512d3b2
7049415: Failure of resolution of sym.reference to the c.s.s. should be wrapped in BootstrapMethodError
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diff
changeset
|
3098 // it had better be resolved by now, or maybe JSR 292 failed to load |
ba550512d3b2
7049415: Failure of resolution of sym.reference to the c.s.s. should be wrapped in BootstrapMethodError
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parents:
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diff
changeset
|
3099 raiseException_method = raise_exception_method(); |
ba550512d3b2
7049415: Failure of resolution of sym.reference to the c.s.s. should be wrapped in BootstrapMethodError
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|
3100 } |
ba550512d3b2
7049415: Failure of resolution of sym.reference to the c.s.s. should be wrapped in BootstrapMethodError
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diff
changeset
|
3101 if (raiseException_method == NULL) { |
ba550512d3b2
7049415: Failure of resolution of sym.reference to the c.s.s. should be wrapped in BootstrapMethodError
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changeset
|
3102 THROW_MSG(vmSymbols::java_lang_InternalError(), "no raiseException method"); |
ba550512d3b2
7049415: Failure of resolution of sym.reference to the c.s.s. should be wrapped in BootstrapMethodError
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parents:
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|
3103 } |
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7049415: Failure of resolution of sym.reference to the c.s.s. should be wrapped in BootstrapMethodError
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parents:
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changeset
|
3104 JavaCallArguments args; |
ba550512d3b2
7049415: Failure of resolution of sym.reference to the c.s.s. should be wrapped in BootstrapMethodError
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changeset
|
3105 args.push_int(code); |
ba550512d3b2
7049415: Failure of resolution of sym.reference to the c.s.s. should be wrapped in BootstrapMethodError
jrose
parents:
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diff
changeset
|
3106 args.push_oop(actual); |
ba550512d3b2
7049415: Failure of resolution of sym.reference to the c.s.s. should be wrapped in BootstrapMethodError
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|
3107 args.push_oop(required); |
ba550512d3b2
7049415: Failure of resolution of sym.reference to the c.s.s. should be wrapped in BootstrapMethodError
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changeset
|
3108 JavaValue result(T_VOID); |
ba550512d3b2
7049415: Failure of resolution of sym.reference to the c.s.s. should be wrapped in BootstrapMethodError
jrose
parents:
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diff
changeset
|
3109 JavaCalls::call(&result, raiseException_method, &args, CHECK); |
ba550512d3b2
7049415: Failure of resolution of sym.reference to the c.s.s. should be wrapped in BootstrapMethodError
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parents:
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|
3110 } |
ba550512d3b2
7049415: Failure of resolution of sym.reference to the c.s.s. should be wrapped in BootstrapMethodError
jrose
parents:
3412
diff
changeset
|
3111 |
3387
2848194272f4
7044892: JSR 292: API entry points sometimes throw the wrong exceptions or doesn't throw the expected one
jrose
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3371
diff
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|
3112 JVM_ENTRY(jobject, MH_invoke_UOE(JNIEnv *env, jobject igmh, jobjectArray igargs)) { |
2848194272f4
7044892: JSR 292: API entry points sometimes throw the wrong exceptions or doesn't throw the expected one
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|
3113 TempNewSymbol UOE_name = SymbolTable::new_symbol("java/lang/UnsupportedOperationException", CHECK_NULL); |
2848194272f4
7044892: JSR 292: API entry points sometimes throw the wrong exceptions or doesn't throw the expected one
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|
3114 THROW_MSG_NULL(UOE_name, "MethodHandle.invoke cannot be invoked reflectively"); |
2848194272f4
7044892: JSR 292: API entry points sometimes throw the wrong exceptions or doesn't throw the expected one
jrose
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3371
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|
3115 return NULL; |
2848194272f4
7044892: JSR 292: API entry points sometimes throw the wrong exceptions or doesn't throw the expected one
jrose
parents:
3371
diff
changeset
|
3116 } |
2848194272f4
7044892: JSR 292: API entry points sometimes throw the wrong exceptions or doesn't throw the expected one
jrose
parents:
3371
diff
changeset
|
3117 JVM_END |
2848194272f4
7044892: JSR 292: API entry points sometimes throw the wrong exceptions or doesn't throw the expected one
jrose
parents:
3371
diff
changeset
|
3118 |
2848194272f4
7044892: JSR 292: API entry points sometimes throw the wrong exceptions or doesn't throw the expected one
jrose
parents:
3371
diff
changeset
|
3119 JVM_ENTRY(jobject, MH_invokeExact_UOE(JNIEnv *env, jobject igmh, jobjectArray igargs)) { |
2848194272f4
7044892: JSR 292: API entry points sometimes throw the wrong exceptions or doesn't throw the expected one
jrose
parents:
3371
diff
changeset
|
3120 TempNewSymbol UOE_name = SymbolTable::new_symbol("java/lang/UnsupportedOperationException", CHECK_NULL); |
2848194272f4
7044892: JSR 292: API entry points sometimes throw the wrong exceptions or doesn't throw the expected one
jrose
parents:
3371
diff
changeset
|
3121 THROW_MSG_NULL(UOE_name, "MethodHandle.invokeExact cannot be invoked reflectively"); |
2848194272f4
7044892: JSR 292: API entry points sometimes throw the wrong exceptions or doesn't throw the expected one
jrose
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3371
diff
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|
3122 return NULL; |
2848194272f4
7044892: JSR 292: API entry points sometimes throw the wrong exceptions or doesn't throw the expected one
jrose
parents:
3371
diff
changeset
|
3123 } |
2848194272f4
7044892: JSR 292: API entry points sometimes throw the wrong exceptions or doesn't throw the expected one
jrose
parents:
3371
diff
changeset
|
3124 JVM_END |
2848194272f4
7044892: JSR 292: API entry points sometimes throw the wrong exceptions or doesn't throw the expected one
jrose
parents:
3371
diff
changeset
|
3125 |
726
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
710
diff
changeset
|
3126 |
710 | 3127 /// JVM_RegisterMethodHandleMethods |
3128 | |
3129 #define LANG "Ljava/lang/" | |
2460 | 3130 #define JLINV "Ljava/lang/invoke/" |
710 | 3131 |
3132 #define OBJ LANG"Object;" | |
3133 #define CLS LANG"Class;" | |
3134 #define STRG LANG"String;" | |
2460 | 3135 #define MT JLINV"MethodType;" |
3136 #define MH JLINV"MethodHandle;" | |
3137 #define MEM JLINV"MemberName;" | |
3138 #define AMH JLINV"AdapterMethodHandle;" | |
3139 #define BMH JLINV"BoundMethodHandle;" | |
3140 #define DMH JLINV"DirectMethodHandle;" | |
710 | 3141 |
3142 #define CC (char*) /*cast a literal from (const char*)*/ | |
3143 #define FN_PTR(f) CAST_FROM_FN_PTR(void*, &f) | |
3144 | |
2357
8033953d67ff
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
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diff
changeset
|
3145 // These are the native methods on sun.invoke.MethodHandleNatives. |
710 | 3146 static JNINativeMethod methods[] = { |
3147 // void init(MemberName self, AccessibleObject ref) | |
2357
8033953d67ff
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
2356
diff
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|
3148 {CC"init", CC"("AMH""MH"I)V", FN_PTR(MHN_init_AMH)}, |
8033953d67ff
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
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diff
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|
3149 {CC"init", CC"("BMH""OBJ"I)V", FN_PTR(MHN_init_BMH)}, |
8033953d67ff
7012648: move JSR 292 to package java.lang.invoke and adjust names
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diff
changeset
|
3150 {CC"init", CC"("DMH""OBJ"Z"CLS")V", FN_PTR(MHN_init_DMH)}, |
8033953d67ff
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
2356
diff
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|
3151 {CC"init", CC"("MT")V", FN_PTR(MHN_init_MT)}, |
8033953d67ff
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
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diff
changeset
|
3152 {CC"init", CC"("MEM""OBJ")V", FN_PTR(MHN_init_Mem)}, |
8033953d67ff
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
2356
diff
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|
3153 {CC"expand", CC"("MEM")V", FN_PTR(MHN_expand_Mem)}, |
8033953d67ff
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
2356
diff
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|
3154 {CC"resolve", CC"("MEM""CLS")V", FN_PTR(MHN_resolve_Mem)}, |
8033953d67ff
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
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2356
diff
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|
3155 {CC"getTarget", CC"("MH"I)"OBJ, FN_PTR(MHN_getTarget)}, |
8033953d67ff
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
2356
diff
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|
3156 {CC"getConstant", CC"(I)I", FN_PTR(MHN_getConstant)}, |
710 | 3157 // static native int getNamedCon(int which, Object[] name) |
2357
8033953d67ff
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
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2356
diff
changeset
|
3158 {CC"getNamedCon", CC"(I["OBJ")I", FN_PTR(MHN_getNamedCon)}, |
710 | 3159 // static native int getMembers(Class<?> defc, String matchName, String matchSig, |
3160 // int matchFlags, Class<?> caller, int skip, MemberName[] results); | |
2357
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7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
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2356
diff
changeset
|
3161 {CC"getMembers", CC"("CLS""STRG""STRG"I"CLS"I["MEM")I", FN_PTR(MHN_getMembers)} |
710 | 3162 }; |
3163 | |
3387
2848194272f4
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jrose
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3371
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|
3164 static JNINativeMethod invoke_methods[] = { |
2848194272f4
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|
3165 // void init(MemberName self, AccessibleObject ref) |
2848194272f4
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|
3166 {CC"invoke", CC"(["OBJ")"OBJ, FN_PTR(MH_invoke_UOE)}, |
2848194272f4
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jrose
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|
3167 {CC"invokeExact", CC"(["OBJ")"OBJ, FN_PTR(MH_invokeExact_UOE)} |
2848194272f4
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|
3168 }; |
2848194272f4
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|
3169 |
710 | 3170 // This one function is exported, used by NativeLookup. |
3171 | |
3172 JVM_ENTRY(void, JVM_RegisterMethodHandleMethods(JNIEnv *env, jclass MHN_class)) { | |
3173 assert(MethodHandles::spot_check_entry_names(), "entry enum is OK"); | |
3174 | |
2416
38fea01eb669
6817525: turn on method handle functionality by default for JSR 292
twisti
parents:
2357
diff
changeset
|
3175 if (!EnableInvokeDynamic) { |
38fea01eb669
6817525: turn on method handle functionality by default for JSR 292
twisti
parents:
2357
diff
changeset
|
3176 warning("JSR 292 is disabled in this JVM. Use -XX:+UnlockDiagnosticVMOptions -XX:+EnableInvokeDynamic to enable."); |
710 | 3177 return; // bind nothing |
3178 } | |
3179 | |
1039
987e948ebbc8
6815692: method handle code needs some cleanup (post-6655638)
jrose
parents:
726
diff
changeset
|
3180 bool enable_MH = true; |
987e948ebbc8
6815692: method handle code needs some cleanup (post-6655638)
jrose
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726
diff
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|
3181 |
2460 | 3182 { |
710 | 3183 ThreadToNativeFromVM ttnfv(thread); |
3184 | |
3185 int status = env->RegisterNatives(MHN_class, methods, sizeof(methods)/sizeof(JNINativeMethod)); | |
3387
2848194272f4
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|
3186 if (!env->ExceptionOccurred()) { |
2848194272f4
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|
3187 const char* L_MH_name = (JLINV "MethodHandle"); |
2848194272f4
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jrose
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|
3188 const char* MH_name = L_MH_name+1; |
2848194272f4
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|
3189 jclass MH_class = env->FindClass(MH_name); |
2848194272f4
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|
3190 status = env->RegisterNatives(MH_class, invoke_methods, sizeof(invoke_methods)/sizeof(JNINativeMethod)); |
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3191 } |
710 | 3192 if (env->ExceptionOccurred()) { |
2460 | 3193 MethodHandles::set_enabled(false); |
3194 warning("JSR 292 method handle code is mismatched to this JVM. Disabling support."); | |
3195 enable_MH = false; | |
710 | 3196 env->ExceptionClear(); |
3197 } | |
3198 } | |
726
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3199 |
1039
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3200 if (enable_MH) { |
3417
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3201 methodOop raiseException_method = MethodHandles::resolve_raise_exception_method(CHECK); |
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3202 if (raiseException_method != NULL) { |
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3203 MethodHandles::set_raise_exception_method(raiseException_method); |
2460 | 3204 } else { |
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3205 warning("JSR 292 method handle code is mismatched to this JVM. Disabling support."); |
2116
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3206 enable_MH = false; |
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3207 } |
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3208 } |
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3209 |
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3210 if (enable_MH) { |
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3211 MethodHandles::generate_adapters(); |
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3212 MethodHandles::set_enabled(true); |
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3213 } |
710 | 3214 } |
3215 JVM_END |