Mercurial > hg > graal-compiler
annotate src/share/vm/ci/ciEnv.hpp @ 780:c96bf21b756f
6788527: Server vm intermittently fails with assertion "live value must not be garbage" with fastdebug bits
Summary: Cache Jvmti and DTrace flags used by Compiler.
Reviewed-by: never
| author | kvn |
|---|---|
| date | Fri, 08 May 2009 10:44:20 -0700 |
| parents | a61af66fc99e |
| children | bd02caa94611 |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 2 * Copyright 1999-2007 Sun Microsystems, Inc. All Rights Reserved. | |
| 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 * | |
| 19 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, | |
| 20 * CA 95054 USA or visit www.sun.com if you need additional information or | |
| 21 * have any questions. | |
| 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_examine_or_deopt_anywhere; |
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59 bool _jvmti_can_access_local_variables; |
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60 bool _jvmti_can_post_exceptions; |
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61 |
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62 // Cache DTrace flags |
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63 bool _dtrace_extended_probes; |
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64 bool _dtrace_monitor_probes; |
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65 bool _dtrace_method_probes; |
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66 bool _dtrace_alloc_probes; |
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67 |
| 0 | 68 // Distinguished instances of certain ciObjects.. |
| 69 static ciObject* _null_object_instance; | |
| 70 static ciMethodKlass* _method_klass_instance; | |
| 71 static ciSymbolKlass* _symbol_klass_instance; | |
| 72 static ciKlassKlass* _klass_klass_instance; | |
| 73 static ciInstanceKlassKlass* _instance_klass_klass_instance; | |
| 74 static ciTypeArrayKlassKlass* _type_array_klass_klass_instance; | |
| 75 static ciObjArrayKlassKlass* _obj_array_klass_klass_instance; | |
| 76 | |
| 77 static ciInstanceKlass* _ArrayStoreException; | |
| 78 static ciInstanceKlass* _Class; | |
| 79 static ciInstanceKlass* _ClassCastException; | |
| 80 static ciInstanceKlass* _Object; | |
| 81 static ciInstanceKlass* _Throwable; | |
| 82 static ciInstanceKlass* _Thread; | |
| 83 static ciInstanceKlass* _OutOfMemoryError; | |
| 84 static ciInstanceKlass* _String; | |
| 85 | |
| 86 static ciSymbol* _unloaded_cisymbol; | |
| 87 static ciInstanceKlass* _unloaded_ciinstance_klass; | |
| 88 static ciObjArrayKlass* _unloaded_ciobjarrayklass; | |
| 89 | |
| 90 static jobject _ArrayIndexOutOfBoundsException_handle; | |
| 91 static jobject _ArrayStoreException_handle; | |
| 92 static jobject _ClassCastException_handle; | |
| 93 | |
| 94 ciInstance* _NullPointerException_instance; | |
| 95 ciInstance* _ArithmeticException_instance; | |
| 96 ciInstance* _ArrayIndexOutOfBoundsException_instance; | |
| 97 ciInstance* _ArrayStoreException_instance; | |
| 98 ciInstance* _ClassCastException_instance; | |
| 99 | |
| 100 // Look up a klass by name from a particular class loader (the accessor's). | |
| 101 // If require_local, result must be defined in that class loader, or NULL. | |
| 102 // If !require_local, a result from remote class loader may be reported, | |
| 103 // if sufficient class loader constraints exist such that initiating | |
| 104 // a class loading request from the given loader is bound to return | |
| 105 // the class defined in the remote loader (or throw an error). | |
| 106 // | |
| 107 // Return an unloaded klass if !require_local and no class at all is found. | |
| 108 // | |
| 109 // The CI treats a klass as loaded if it is consistently defined in | |
| 110 // another loader, even if it hasn't yet been loaded in all loaders | |
| 111 // that could potentially see it via delegation. | |
| 112 ciKlass* get_klass_by_name(ciKlass* accessing_klass, | |
| 113 ciSymbol* klass_name, | |
| 114 bool require_local); | |
| 115 | |
| 116 // Constant pool access. | |
| 117 ciKlass* get_klass_by_index(ciInstanceKlass* loading_klass, | |
| 118 int klass_index, | |
| 119 bool& is_accessible); | |
| 120 ciConstant get_constant_by_index(ciInstanceKlass* loading_klass, | |
| 121 int constant_index); | |
| 122 bool is_unresolved_string(ciInstanceKlass* loading_klass, | |
| 123 int constant_index) const; | |
| 124 bool is_unresolved_klass(ciInstanceKlass* loading_klass, | |
| 125 int constant_index) const; | |
| 126 ciField* get_field_by_index(ciInstanceKlass* loading_klass, | |
| 127 int field_index); | |
| 128 ciMethod* get_method_by_index(ciInstanceKlass* loading_klass, | |
| 129 int method_index, Bytecodes::Code bc); | |
| 130 | |
| 131 // Implementation methods for loading and constant pool access. | |
| 132 ciKlass* get_klass_by_name_impl(ciKlass* accessing_klass, | |
| 133 ciSymbol* klass_name, | |
| 134 bool require_local); | |
| 135 ciKlass* get_klass_by_index_impl(ciInstanceKlass* loading_klass, | |
| 136 int klass_index, | |
| 137 bool& is_accessible); | |
| 138 ciConstant get_constant_by_index_impl(ciInstanceKlass* loading_klass, | |
| 139 int constant_index); | |
| 140 bool is_unresolved_string_impl (instanceKlass* loading_klass, | |
| 141 int constant_index) const; | |
| 142 bool is_unresolved_klass_impl (instanceKlass* loading_klass, | |
| 143 int constant_index) const; | |
| 144 ciField* get_field_by_index_impl(ciInstanceKlass* loading_klass, | |
| 145 int field_index); | |
| 146 ciMethod* get_method_by_index_impl(ciInstanceKlass* loading_klass, | |
| 147 int method_index, Bytecodes::Code bc); | |
| 148 | |
| 149 // Helper methods | |
| 150 bool check_klass_accessibility(ciKlass* accessing_klass, | |
| 151 klassOop resolved_klassOop); | |
| 152 methodOop lookup_method(instanceKlass* accessor, | |
| 153 instanceKlass* holder, | |
| 154 symbolOop name, | |
| 155 symbolOop sig, | |
| 156 Bytecodes::Code bc); | |
| 157 | |
| 158 // Get a ciObject from the object factory. Ensures uniqueness | |
| 159 // of ciObjects. | |
| 160 ciObject* get_object(oop o) { | |
| 161 if (o == NULL) { | |
| 162 return _null_object_instance; | |
| 163 } else { | |
| 164 return _factory->get(o); | |
| 165 } | |
| 166 } | |
| 167 | |
| 168 ciMethod* get_method_from_handle(jobject method); | |
| 169 | |
| 170 ciInstance* get_or_create_exception(jobject& handle, symbolHandle name); | |
| 171 | |
| 172 // Get a ciMethod representing either an unfound method or | |
| 173 // a method with an unloaded holder. Ensures uniqueness of | |
| 174 // the result. | |
| 175 ciMethod* get_unloaded_method(ciInstanceKlass* holder, | |
| 176 ciSymbol* name, | |
| 177 ciSymbol* signature) { | |
| 178 return _factory->get_unloaded_method(holder, name, signature); | |
| 179 } | |
| 180 | |
| 181 // Get a ciKlass representing an unloaded klass. | |
| 182 // Ensures uniqueness of the result. | |
| 183 ciKlass* get_unloaded_klass(ciKlass* accessing_klass, | |
| 184 ciSymbol* name) { | |
| 185 return _factory->get_unloaded_klass(accessing_klass, name, true); | |
| 186 } | |
| 187 | |
| 188 // See if we already have an unloaded klass for the given name | |
| 189 // or return NULL if not. | |
| 190 ciKlass *check_get_unloaded_klass(ciKlass* accessing_klass, ciSymbol* name) { | |
| 191 return _factory->get_unloaded_klass(accessing_klass, name, false); | |
| 192 } | |
| 193 | |
| 194 // Get a ciReturnAddress corresponding to the given bci. | |
| 195 // Ensures uniqueness of the result. | |
| 196 ciReturnAddress* get_return_address(int bci) { | |
| 197 return _factory->get_return_address(bci); | |
| 198 } | |
| 199 | |
| 200 // Get a ciMethodData representing the methodData for a method | |
| 201 // with none. | |
| 202 ciMethodData* get_empty_methodData() { | |
| 203 return _factory->get_empty_methodData(); | |
| 204 } | |
| 205 | |
| 206 // General utility : get a buffer of some required length. | |
| 207 // Used in symbol creation. | |
| 208 char* name_buffer(int req_len); | |
| 209 | |
| 210 // Is this thread currently in the VM state? | |
| 211 static bool is_in_vm(); | |
| 212 | |
| 213 // Helper routine for determining the validity of a compilation | |
| 214 // with respect to concurrent class loading. | |
| 215 void check_for_system_dictionary_modification(ciMethod* target); | |
| 216 | |
| 217 public: | |
| 218 enum { | |
| 219 MethodCompilable, | |
| 220 MethodCompilable_not_at_tier, | |
| 221 MethodCompilable_never | |
| 222 }; | |
| 223 | |
| 224 ciEnv(CompileTask* task, int system_dictionary_modification_counter); | |
| 225 // Used only during initialization of the ci | |
| 226 ciEnv(Arena* arena); | |
| 227 ~ciEnv(); | |
| 228 | |
| 229 OopRecorder* oop_recorder() { return _oop_recorder; } | |
| 230 void set_oop_recorder(OopRecorder* r) { _oop_recorder = r; } | |
| 231 | |
| 232 DebugInformationRecorder* debug_info() { return _debug_info; } | |
| 233 void set_debug_info(DebugInformationRecorder* i) { _debug_info = i; } | |
| 234 | |
| 235 Dependencies* dependencies() { return _dependencies; } | |
| 236 void set_dependencies(Dependencies* d) { _dependencies = d; } | |
| 237 | |
| 238 // This is true if the compilation is not going to produce code. | |
| 239 // (It is reasonable to retry failed compilations.) | |
| 240 bool failing() { return _failure_reason != NULL; } | |
| 241 | |
| 242 // Reason this compilation is failing, such as "too many basic blocks". | |
| 243 const char* failure_reason() { return _failure_reason; } | |
| 244 | |
| 245 // Return state of appropriate compilability | |
| 246 int compilable() { return _compilable; } | |
| 247 | |
| 248 bool break_at_compile() { return _break_at_compile; } | |
| 249 void set_break_at_compile(bool z) { _break_at_compile = z; } | |
| 250 | |
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251 // Cache Jvmti state |
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252 void cache_jvmti_state(); |
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253 bool jvmti_can_hotswap_or_post_breakpoint() const { return _jvmti_can_hotswap_or_post_breakpoint; } |
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254 bool jvmti_can_examine_or_deopt_anywhere() const { return _jvmti_can_examine_or_deopt_anywhere; } |
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255 bool jvmti_can_access_local_variables() const { return _jvmti_can_access_local_variables; } |
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256 bool jvmti_can_post_exceptions() const { return _jvmti_can_post_exceptions; } |
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257 |
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258 // Cache DTrace flags |
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259 void cache_dtrace_flags(); |
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260 bool dtrace_extended_probes() const { return _dtrace_extended_probes; } |
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261 bool dtrace_monitor_probes() const { return _dtrace_monitor_probes; } |
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262 bool dtrace_method_probes() const { return _dtrace_method_probes; } |
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263 bool dtrace_alloc_probes() const { return _dtrace_alloc_probes; } |
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264 |
| 0 | 265 // The compiler task which has created this env. |
| 266 // May be useful to find out compile_id, comp_level, etc. | |
| 267 CompileTask* task() { return _task; } | |
| 268 // Handy forwards to the task: | |
| 269 int comp_level(); // task()->comp_level() | |
| 270 uint compile_id(); // task()->compile_id() | |
| 271 | |
| 272 // Register the result of a compilation. | |
| 273 void register_method(ciMethod* target, | |
| 274 int entry_bci, | |
| 275 CodeOffsets* offsets, | |
| 276 int orig_pc_offset, | |
| 277 CodeBuffer* code_buffer, | |
| 278 int frame_words, | |
| 279 OopMapSet* oop_map_set, | |
| 280 ExceptionHandlerTable* handler_table, | |
| 281 ImplicitExceptionTable* inc_table, | |
| 282 AbstractCompiler* compiler, | |
| 283 int comp_level, | |
| 284 bool has_debug_info = true, | |
| 285 bool has_unsafe_access = false); | |
| 286 | |
| 287 | |
| 288 // Access to certain well known ciObjects. | |
| 289 ciInstanceKlass* ArrayStoreException_klass() { | |
| 290 return _ArrayStoreException; | |
| 291 } | |
| 292 ciInstanceKlass* Class_klass() { | |
| 293 return _Class; | |
| 294 } | |
| 295 ciInstanceKlass* ClassCastException_klass() { | |
| 296 return _ClassCastException; | |
| 297 } | |
| 298 ciInstanceKlass* Object_klass() { | |
| 299 return _Object; | |
| 300 } | |
| 301 ciInstanceKlass* Throwable_klass() { | |
| 302 return _Throwable; | |
| 303 } | |
| 304 ciInstanceKlass* Thread_klass() { | |
| 305 return _Thread; | |
| 306 } | |
| 307 ciInstanceKlass* OutOfMemoryError_klass() { | |
| 308 return _OutOfMemoryError; | |
| 309 } | |
| 310 ciInstanceKlass* String_klass() { | |
| 311 return _String; | |
| 312 } | |
| 313 ciInstance* NullPointerException_instance() { | |
| 314 assert(_NullPointerException_instance != NULL, "initialization problem"); | |
| 315 return _NullPointerException_instance; | |
| 316 } | |
| 317 ciInstance* ArithmeticException_instance() { | |
| 318 assert(_ArithmeticException_instance != NULL, "initialization problem"); | |
| 319 return _ArithmeticException_instance; | |
| 320 } | |
| 321 | |
| 322 // Lazy constructors: | |
| 323 ciInstance* ArrayIndexOutOfBoundsException_instance(); | |
| 324 ciInstance* ArrayStoreException_instance(); | |
| 325 ciInstance* ClassCastException_instance(); | |
| 326 | |
| 327 static ciSymbol* unloaded_cisymbol() { | |
| 328 return _unloaded_cisymbol; | |
| 329 } | |
| 330 static ciObjArrayKlass* unloaded_ciobjarrayklass() { | |
| 331 return _unloaded_ciobjarrayklass; | |
| 332 } | |
| 333 static ciInstanceKlass* unloaded_ciinstance_klass() { | |
| 334 return _unloaded_ciinstance_klass; | |
| 335 } | |
| 336 | |
| 337 ciKlass* find_system_klass(ciSymbol* klass_name); | |
| 338 // Note: To find a class from its name string, use ciSymbol::make, | |
| 339 // but consider adding to vmSymbols.hpp instead. | |
| 340 | |
| 341 // Use this to make a holder for non-perm compile time constants. | |
| 342 // The resulting array is guaranteed to satisfy "has_encoding". | |
| 343 ciArray* make_array(GrowableArray<ciObject*>* objects); | |
| 344 | |
| 345 // converts the ciKlass* representing the holder of a method into a | |
| 346 // ciInstanceKlass*. This is needed since the holder of a method in | |
| 347 // the bytecodes could be an array type. Basically this converts | |
| 348 // array types into java/lang/Object and other types stay as they are. | |
| 349 static ciInstanceKlass* get_instance_klass_for_declared_method_holder(ciKlass* klass); | |
| 350 | |
| 351 // Return the machine-level offset of o, which must be an element of a. | |
| 352 // This may be used to form constant-loading expressions in lieu of simpler encodings. | |
| 353 int array_element_offset_in_bytes(ciArray* a, ciObject* o); | |
| 354 | |
| 355 // Access to the compile-lifetime allocation arena. | |
| 356 Arena* arena() { return _arena; } | |
| 357 | |
| 358 // What is the current compilation environment? | |
| 359 static ciEnv* current() { return CompilerThread::current()->env(); } | |
| 360 | |
| 361 // Overload with current thread argument | |
| 362 static ciEnv* current(CompilerThread *thread) { return thread->env(); } | |
| 363 | |
| 364 // Per-compiler data. (Used by C2 to publish the Compile* pointer.) | |
| 365 void* compiler_data() { return _compiler_data; } | |
| 366 void set_compiler_data(void* x) { _compiler_data = x; } | |
| 367 | |
| 368 // Notice that a method has been inlined in the current compile; | |
| 369 // used only for statistics. | |
| 370 void notice_inlined_method(ciMethod* method); | |
| 371 | |
| 372 // Total number of bytecodes in inlined methods in this compile | |
| 373 int num_inlined_bytecodes() const; | |
| 374 | |
| 375 // Output stream for logging compilation info. | |
| 376 CompileLog* log() { return _log; } | |
| 377 void set_log(CompileLog* log) { _log = log; } | |
| 378 | |
| 379 // Check for changes to the system dictionary during compilation | |
| 380 bool system_dictionary_modification_counter_changed(); | |
| 381 | |
| 382 void record_failure(const char* reason); | |
| 383 void record_method_not_compilable(const char* reason, bool all_tiers = true); | |
| 384 void record_out_of_memory_failure(); | |
| 385 }; |