Mercurial > hg > graal-compiler
annotate src/share/vm/ci/ciEnv.hpp @ 1602:136b78722a08
6939203: JSR 292 needs method handle constants
Summary: Add new CP types CONSTANT_MethodHandle, CONSTANT_MethodType; extend 'ldc' bytecode.
Reviewed-by: twisti, never
| author | jrose |
|---|---|
| date | Wed, 09 Jun 2010 18:50:45 -0700 |
| parents | c18cbe5936b8 |
| children | 2d26b0046e0d f95d63e2154a |
| rev | line source |
|---|---|
| 0 | 1 /* |
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2 * Copyright (c) 1999, 2010, Oracle and/or its affiliates. All rights reserved. |
| 0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| 4 * | |
| 5 * This code is free software; you can redistribute it and/or modify it | |
| 6 * under the terms of the GNU General Public License version 2 only, as | |
| 7 * published by the Free Software Foundation. | |
| 8 * | |
| 9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
| 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 12 * version 2 for more details (a copy is included in the LICENSE file that | |
| 13 * accompanied this code). | |
| 14 * | |
| 15 * You should have received a copy of the GNU General Public License version | |
| 16 * 2 along with this work; if not, write to the Free Software Foundation, | |
| 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
| 18 * | |
|
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
| 0 | 22 * |
| 23 */ | |
| 24 | |
| 25 class CompileTask; | |
| 26 | |
| 27 // ciEnv | |
| 28 // | |
| 29 // This class is the top level broker for requests from the compiler | |
| 30 // to the VM. | |
| 31 class ciEnv : StackObj { | |
| 32 CI_PACKAGE_ACCESS_TO | |
| 33 | |
| 34 friend class CompileBroker; | |
| 35 friend class Dependencies; // for get_object, during logging | |
| 36 | |
| 37 private: | |
| 38 Arena* _arena; // Alias for _ciEnv_arena except in init_shared_objects() | |
| 39 Arena _ciEnv_arena; | |
| 40 int _system_dictionary_modification_counter; | |
| 41 ciObjectFactory* _factory; | |
| 42 OopRecorder* _oop_recorder; | |
| 43 DebugInformationRecorder* _debug_info; | |
| 44 Dependencies* _dependencies; | |
| 45 const char* _failure_reason; | |
| 46 int _compilable; | |
| 47 bool _break_at_compile; | |
| 48 int _num_inlined_bytecodes; | |
| 49 CompileTask* _task; // faster access to CompilerThread::task | |
| 50 CompileLog* _log; // faster access to CompilerThread::log | |
| 51 void* _compiler_data; // compiler-specific stuff, if any | |
| 52 | |
| 53 char* _name_buffer; | |
| 54 int _name_buffer_len; | |
| 55 | |
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56 // Cache Jvmti state |
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57 bool _jvmti_can_hotswap_or_post_breakpoint; |
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58 bool _jvmti_can_access_local_variables; |
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59 bool _jvmti_can_post_on_exceptions; |
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60 |
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61 // Cache DTrace flags |
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62 bool _dtrace_extended_probes; |
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63 bool _dtrace_monitor_probes; |
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64 bool _dtrace_method_probes; |
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65 bool _dtrace_alloc_probes; |
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66 |
| 0 | 67 // Distinguished instances of certain ciObjects.. |
| 68 static ciObject* _null_object_instance; | |
| 69 static ciMethodKlass* _method_klass_instance; | |
| 70 static ciSymbolKlass* _symbol_klass_instance; | |
| 71 static ciKlassKlass* _klass_klass_instance; | |
| 72 static ciInstanceKlassKlass* _instance_klass_klass_instance; | |
| 73 static ciTypeArrayKlassKlass* _type_array_klass_klass_instance; | |
| 74 static ciObjArrayKlassKlass* _obj_array_klass_klass_instance; | |
| 75 | |
| 1142 | 76 #define WK_KLASS_DECL(name, ignore_s, ignore_o) static ciInstanceKlass* _##name; |
| 77 WK_KLASSES_DO(WK_KLASS_DECL) | |
| 78 #undef WK_KLASS_DECL | |
| 0 | 79 |
| 80 static ciSymbol* _unloaded_cisymbol; | |
| 81 static ciInstanceKlass* _unloaded_ciinstance_klass; | |
| 82 static ciObjArrayKlass* _unloaded_ciobjarrayklass; | |
| 83 | |
| 84 static jobject _ArrayIndexOutOfBoundsException_handle; | |
| 85 static jobject _ArrayStoreException_handle; | |
| 86 static jobject _ClassCastException_handle; | |
| 87 | |
| 88 ciInstance* _NullPointerException_instance; | |
| 89 ciInstance* _ArithmeticException_instance; | |
| 90 ciInstance* _ArrayIndexOutOfBoundsException_instance; | |
| 91 ciInstance* _ArrayStoreException_instance; | |
| 92 ciInstance* _ClassCastException_instance; | |
| 93 | |
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94 ciInstance* _the_null_string; // The Java string "null" |
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95 ciInstance* _the_min_jint_string; // The Java string "-2147483648" |
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96 |
| 0 | 97 // Look up a klass by name from a particular class loader (the accessor's). |
| 98 // If require_local, result must be defined in that class loader, or NULL. | |
| 99 // If !require_local, a result from remote class loader may be reported, | |
| 100 // if sufficient class loader constraints exist such that initiating | |
| 101 // a class loading request from the given loader is bound to return | |
| 102 // the class defined in the remote loader (or throw an error). | |
| 103 // | |
| 104 // Return an unloaded klass if !require_local and no class at all is found. | |
| 105 // | |
| 106 // The CI treats a klass as loaded if it is consistently defined in | |
| 107 // another loader, even if it hasn't yet been loaded in all loaders | |
| 108 // that could potentially see it via delegation. | |
| 109 ciKlass* get_klass_by_name(ciKlass* accessing_klass, | |
| 110 ciSymbol* klass_name, | |
| 111 bool require_local); | |
| 112 | |
| 113 // Constant pool access. | |
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114 ciKlass* get_klass_by_index(constantPoolHandle cpool, |
| 0 | 115 int klass_index, |
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116 bool& is_accessible, |
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117 ciInstanceKlass* loading_klass); |
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118 ciConstant get_constant_by_index(constantPoolHandle cpool, |
| 1602 | 119 int pool_index, int cache_index, |
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120 ciInstanceKlass* accessor); |
| 0 | 121 ciField* get_field_by_index(ciInstanceKlass* loading_klass, |
| 122 int field_index); | |
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123 ciMethod* get_method_by_index(constantPoolHandle cpool, |
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124 int method_index, Bytecodes::Code bc, |
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125 ciInstanceKlass* loading_klass); |
| 0 | 126 |
| 127 // Implementation methods for loading and constant pool access. | |
| 128 ciKlass* get_klass_by_name_impl(ciKlass* accessing_klass, | |
| 129 ciSymbol* klass_name, | |
| 130 bool require_local); | |
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131 ciKlass* get_klass_by_index_impl(constantPoolHandle cpool, |
| 0 | 132 int klass_index, |
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133 bool& is_accessible, |
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134 ciInstanceKlass* loading_klass); |
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135 ciConstant get_constant_by_index_impl(constantPoolHandle cpool, |
| 1602 | 136 int pool_index, int cache_index, |
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137 ciInstanceKlass* loading_klass); |
| 0 | 138 ciField* get_field_by_index_impl(ciInstanceKlass* loading_klass, |
| 139 int field_index); | |
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140 ciMethod* get_method_by_index_impl(constantPoolHandle cpool, |
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141 int method_index, Bytecodes::Code bc, |
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142 ciInstanceKlass* loading_klass); |
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143 ciMethod* get_fake_invokedynamic_method_impl(constantPoolHandle cpool, |
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144 int index, Bytecodes::Code bc); |
| 0 | 145 |
| 146 // Helper methods | |
| 147 bool check_klass_accessibility(ciKlass* accessing_klass, | |
| 148 klassOop resolved_klassOop); | |
| 149 methodOop lookup_method(instanceKlass* accessor, | |
| 150 instanceKlass* holder, | |
| 151 symbolOop name, | |
| 152 symbolOop sig, | |
| 153 Bytecodes::Code bc); | |
| 154 | |
| 155 // Get a ciObject from the object factory. Ensures uniqueness | |
| 156 // of ciObjects. | |
| 157 ciObject* get_object(oop o) { | |
| 158 if (o == NULL) { | |
| 159 return _null_object_instance; | |
| 160 } else { | |
| 161 return _factory->get(o); | |
| 162 } | |
| 163 } | |
| 164 | |
| 165 ciMethod* get_method_from_handle(jobject method); | |
| 166 | |
| 167 ciInstance* get_or_create_exception(jobject& handle, symbolHandle name); | |
| 168 | |
| 169 // Get a ciMethod representing either an unfound method or | |
| 170 // a method with an unloaded holder. Ensures uniqueness of | |
| 171 // the result. | |
| 172 ciMethod* get_unloaded_method(ciInstanceKlass* holder, | |
| 173 ciSymbol* name, | |
| 174 ciSymbol* signature) { | |
| 175 return _factory->get_unloaded_method(holder, name, signature); | |
| 176 } | |
| 177 | |
| 178 // Get a ciKlass representing an unloaded klass. | |
| 179 // Ensures uniqueness of the result. | |
| 180 ciKlass* get_unloaded_klass(ciKlass* accessing_klass, | |
| 181 ciSymbol* name) { | |
| 182 return _factory->get_unloaded_klass(accessing_klass, name, true); | |
| 183 } | |
| 184 | |
| 1602 | 185 // Get a ciKlass representing an unloaded klass mirror. |
| 186 // Result is not necessarily unique, but will be unloaded. | |
| 187 ciInstance* get_unloaded_klass_mirror(ciKlass* type) { | |
| 188 return _factory->get_unloaded_klass_mirror(type); | |
| 189 } | |
| 190 | |
| 191 // Get a ciInstance representing an unresolved method handle constant. | |
| 192 ciInstance* get_unloaded_method_handle_constant(ciKlass* holder, | |
| 193 ciSymbol* name, | |
| 194 ciSymbol* signature, | |
| 195 int ref_kind) { | |
| 196 return _factory->get_unloaded_method_handle_constant(holder, name, signature, ref_kind); | |
| 197 } | |
| 198 | |
| 199 // Get a ciInstance representing an unresolved method type constant. | |
| 200 ciInstance* get_unloaded_method_type_constant(ciSymbol* signature) { | |
| 201 return _factory->get_unloaded_method_type_constant(signature); | |
| 202 } | |
| 203 | |
| 0 | 204 // See if we already have an unloaded klass for the given name |
| 205 // or return NULL if not. | |
| 206 ciKlass *check_get_unloaded_klass(ciKlass* accessing_klass, ciSymbol* name) { | |
| 207 return _factory->get_unloaded_klass(accessing_klass, name, false); | |
| 208 } | |
| 209 | |
| 210 // Get a ciReturnAddress corresponding to the given bci. | |
| 211 // Ensures uniqueness of the result. | |
| 212 ciReturnAddress* get_return_address(int bci) { | |
| 213 return _factory->get_return_address(bci); | |
| 214 } | |
| 215 | |
| 216 // Get a ciMethodData representing the methodData for a method | |
| 217 // with none. | |
| 218 ciMethodData* get_empty_methodData() { | |
| 219 return _factory->get_empty_methodData(); | |
| 220 } | |
| 221 | |
| 222 // General utility : get a buffer of some required length. | |
| 223 // Used in symbol creation. | |
| 224 char* name_buffer(int req_len); | |
| 225 | |
| 226 // Is this thread currently in the VM state? | |
| 227 static bool is_in_vm(); | |
| 228 | |
| 229 // Helper routine for determining the validity of a compilation | |
| 230 // with respect to concurrent class loading. | |
| 231 void check_for_system_dictionary_modification(ciMethod* target); | |
| 232 | |
| 233 public: | |
| 234 enum { | |
| 235 MethodCompilable, | |
| 236 MethodCompilable_not_at_tier, | |
| 237 MethodCompilable_never | |
| 238 }; | |
| 239 | |
| 240 ciEnv(CompileTask* task, int system_dictionary_modification_counter); | |
| 241 // Used only during initialization of the ci | |
| 242 ciEnv(Arena* arena); | |
| 243 ~ciEnv(); | |
| 244 | |
| 245 OopRecorder* oop_recorder() { return _oop_recorder; } | |
| 246 void set_oop_recorder(OopRecorder* r) { _oop_recorder = r; } | |
| 247 | |
| 248 DebugInformationRecorder* debug_info() { return _debug_info; } | |
| 249 void set_debug_info(DebugInformationRecorder* i) { _debug_info = i; } | |
| 250 | |
| 251 Dependencies* dependencies() { return _dependencies; } | |
| 252 void set_dependencies(Dependencies* d) { _dependencies = d; } | |
| 253 | |
| 254 // This is true if the compilation is not going to produce code. | |
| 255 // (It is reasonable to retry failed compilations.) | |
| 256 bool failing() { return _failure_reason != NULL; } | |
| 257 | |
| 258 // Reason this compilation is failing, such as "too many basic blocks". | |
| 259 const char* failure_reason() { return _failure_reason; } | |
| 260 | |
| 261 // Return state of appropriate compilability | |
| 262 int compilable() { return _compilable; } | |
| 263 | |
| 264 bool break_at_compile() { return _break_at_compile; } | |
| 265 void set_break_at_compile(bool z) { _break_at_compile = z; } | |
| 266 | |
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267 // Cache Jvmti state |
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268 void cache_jvmti_state(); |
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269 bool jvmti_can_hotswap_or_post_breakpoint() const { return _jvmti_can_hotswap_or_post_breakpoint; } |
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270 bool jvmti_can_access_local_variables() const { return _jvmti_can_access_local_variables; } |
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271 bool jvmti_can_post_on_exceptions() const { return _jvmti_can_post_on_exceptions; } |
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272 |
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273 // Cache DTrace flags |
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274 void cache_dtrace_flags(); |
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275 bool dtrace_extended_probes() const { return _dtrace_extended_probes; } |
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276 bool dtrace_monitor_probes() const { return _dtrace_monitor_probes; } |
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277 bool dtrace_method_probes() const { return _dtrace_method_probes; } |
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278 bool dtrace_alloc_probes() const { return _dtrace_alloc_probes; } |
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279 |
| 0 | 280 // The compiler task which has created this env. |
| 281 // May be useful to find out compile_id, comp_level, etc. | |
| 282 CompileTask* task() { return _task; } | |
| 283 // Handy forwards to the task: | |
| 284 int comp_level(); // task()->comp_level() | |
| 285 uint compile_id(); // task()->compile_id() | |
| 286 | |
| 287 // Register the result of a compilation. | |
| 288 void register_method(ciMethod* target, | |
| 289 int entry_bci, | |
| 290 CodeOffsets* offsets, | |
| 291 int orig_pc_offset, | |
| 292 CodeBuffer* code_buffer, | |
| 293 int frame_words, | |
| 294 OopMapSet* oop_map_set, | |
| 295 ExceptionHandlerTable* handler_table, | |
| 296 ImplicitExceptionTable* inc_table, | |
| 297 AbstractCompiler* compiler, | |
| 298 int comp_level, | |
| 299 bool has_debug_info = true, | |
| 300 bool has_unsafe_access = false); | |
| 301 | |
| 302 | |
| 303 // Access to certain well known ciObjects. | |
| 1142 | 304 #define WK_KLASS_FUNC(name, ignore_s, ignore_o) \ |
| 305 ciInstanceKlass* name() { \ | |
| 306 return _##name;\ | |
| 0 | 307 } |
| 1142 | 308 WK_KLASSES_DO(WK_KLASS_FUNC) |
| 309 #undef WK_KLASS_FUNC | |
| 310 | |
| 0 | 311 ciInstance* NullPointerException_instance() { |
| 312 assert(_NullPointerException_instance != NULL, "initialization problem"); | |
| 313 return _NullPointerException_instance; | |
| 314 } | |
| 315 ciInstance* ArithmeticException_instance() { | |
| 316 assert(_ArithmeticException_instance != NULL, "initialization problem"); | |
| 317 return _ArithmeticException_instance; | |
| 318 } | |
| 319 | |
| 320 // Lazy constructors: | |
| 321 ciInstance* ArrayIndexOutOfBoundsException_instance(); | |
| 322 ciInstance* ArrayStoreException_instance(); | |
| 323 ciInstance* ClassCastException_instance(); | |
| 324 | |
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325 ciInstance* the_null_string(); |
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326 ciInstance* the_min_jint_string(); |
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327 |
| 0 | 328 static ciSymbol* unloaded_cisymbol() { |
| 329 return _unloaded_cisymbol; | |
| 330 } | |
| 331 static ciObjArrayKlass* unloaded_ciobjarrayklass() { | |
| 332 return _unloaded_ciobjarrayklass; | |
| 333 } | |
| 334 static ciInstanceKlass* unloaded_ciinstance_klass() { | |
| 335 return _unloaded_ciinstance_klass; | |
| 336 } | |
| 337 | |
| 338 ciKlass* find_system_klass(ciSymbol* klass_name); | |
| 339 // Note: To find a class from its name string, use ciSymbol::make, | |
| 340 // but consider adding to vmSymbols.hpp instead. | |
| 341 | |
| 342 // Use this to make a holder for non-perm compile time constants. | |
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343 // The resulting array is guaranteed to satisfy "can_be_constant". |
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344 ciArray* make_system_array(GrowableArray<ciObject*>* objects); |
| 0 | 345 |
| 346 // converts the ciKlass* representing the holder of a method into a | |
| 347 // ciInstanceKlass*. This is needed since the holder of a method in | |
| 348 // the bytecodes could be an array type. Basically this converts | |
| 349 // array types into java/lang/Object and other types stay as they are. | |
| 350 static ciInstanceKlass* get_instance_klass_for_declared_method_holder(ciKlass* klass); | |
| 351 | |
| 352 // Return the machine-level offset of o, which must be an element of a. | |
| 353 // This may be used to form constant-loading expressions in lieu of simpler encodings. | |
| 354 int array_element_offset_in_bytes(ciArray* a, ciObject* o); | |
| 355 | |
| 356 // Access to the compile-lifetime allocation arena. | |
| 357 Arena* arena() { return _arena; } | |
| 358 | |
| 359 // What is the current compilation environment? | |
| 360 static ciEnv* current() { return CompilerThread::current()->env(); } | |
| 361 | |
| 362 // Overload with current thread argument | |
| 363 static ciEnv* current(CompilerThread *thread) { return thread->env(); } | |
| 364 | |
| 365 // Per-compiler data. (Used by C2 to publish the Compile* pointer.) | |
| 366 void* compiler_data() { return _compiler_data; } | |
| 367 void set_compiler_data(void* x) { _compiler_data = x; } | |
| 368 | |
| 369 // Notice that a method has been inlined in the current compile; | |
| 370 // used only for statistics. | |
| 371 void notice_inlined_method(ciMethod* method); | |
| 372 | |
| 373 // Total number of bytecodes in inlined methods in this compile | |
| 374 int num_inlined_bytecodes() const; | |
| 375 | |
| 376 // Output stream for logging compilation info. | |
| 377 CompileLog* log() { return _log; } | |
| 378 void set_log(CompileLog* log) { _log = log; } | |
| 379 | |
| 380 // Check for changes to the system dictionary during compilation | |
| 381 bool system_dictionary_modification_counter_changed(); | |
| 382 | |
| 383 void record_failure(const char* reason); | |
| 384 void record_method_not_compilable(const char* reason, bool all_tiers = true); | |
| 385 void record_out_of_memory_failure(); | |
| 386 }; |