Mercurial > hg > truffle
annotate src/share/vm/ci/ciEnv.cpp @ 989:148e5441d916
6863023: need non-perm oops in code cache for JSR 292
Summary: Make a special root-list for those few nmethods which might contain non-perm oops.
Reviewed-by: twisti, kvn, never, jmasa, ysr
| author | jrose |
|---|---|
| date | Tue, 15 Sep 2009 21:53:47 -0700 |
| parents | bd02caa94611 |
| children | 389049f3f393 0c3f888b7636 |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 844 | 2 * Copyright 1999-2009 Sun Microsystems, Inc. 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 * | |
| 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 #include "incls/_precompiled.incl" | |
| 26 #include "incls/_ciEnv.cpp.incl" | |
| 27 | |
| 28 // ciEnv | |
| 29 // | |
| 30 // This class is the top level broker for requests from the compiler | |
| 31 // to the VM. | |
| 32 | |
| 33 ciObject* ciEnv::_null_object_instance; | |
| 34 ciMethodKlass* ciEnv::_method_klass_instance; | |
| 35 ciSymbolKlass* ciEnv::_symbol_klass_instance; | |
| 36 ciKlassKlass* ciEnv::_klass_klass_instance; | |
| 37 ciInstanceKlassKlass* ciEnv::_instance_klass_klass_instance; | |
| 38 ciTypeArrayKlassKlass* ciEnv::_type_array_klass_klass_instance; | |
| 39 ciObjArrayKlassKlass* ciEnv::_obj_array_klass_klass_instance; | |
| 40 | |
| 41 ciInstanceKlass* ciEnv::_ArrayStoreException; | |
| 42 ciInstanceKlass* ciEnv::_Class; | |
| 43 ciInstanceKlass* ciEnv::_ClassCastException; | |
| 44 ciInstanceKlass* ciEnv::_Object; | |
| 45 ciInstanceKlass* ciEnv::_Throwable; | |
| 46 ciInstanceKlass* ciEnv::_Thread; | |
| 47 ciInstanceKlass* ciEnv::_OutOfMemoryError; | |
| 48 ciInstanceKlass* ciEnv::_String; | |
| 49 | |
| 50 ciSymbol* ciEnv::_unloaded_cisymbol = NULL; | |
| 51 ciInstanceKlass* ciEnv::_unloaded_ciinstance_klass = NULL; | |
| 52 ciObjArrayKlass* ciEnv::_unloaded_ciobjarrayklass = NULL; | |
| 53 | |
| 54 jobject ciEnv::_ArrayIndexOutOfBoundsException_handle = NULL; | |
| 55 jobject ciEnv::_ArrayStoreException_handle = NULL; | |
| 56 jobject ciEnv::_ClassCastException_handle = NULL; | |
| 57 | |
| 58 #ifndef PRODUCT | |
| 59 static bool firstEnv = true; | |
| 60 #endif /* PRODUCT */ | |
| 61 | |
| 62 // ------------------------------------------------------------------ | |
| 63 // ciEnv::ciEnv | |
| 64 ciEnv::ciEnv(CompileTask* task, int system_dictionary_modification_counter) { | |
| 65 VM_ENTRY_MARK; | |
| 66 | |
| 67 // Set up ciEnv::current immediately, for the sake of ciObjectFactory, etc. | |
| 68 thread->set_env(this); | |
| 69 assert(ciEnv::current() == this, "sanity"); | |
| 70 | |
| 71 _oop_recorder = NULL; | |
| 72 _debug_info = NULL; | |
| 73 _dependencies = NULL; | |
| 74 _failure_reason = NULL; | |
| 75 _compilable = MethodCompilable; | |
| 76 _break_at_compile = false; | |
| 77 _compiler_data = NULL; | |
| 78 #ifndef PRODUCT | |
| 79 assert(!firstEnv, "not initialized properly"); | |
| 80 #endif /* !PRODUCT */ | |
| 81 | |
| 82 _system_dictionary_modification_counter = system_dictionary_modification_counter; | |
| 83 _num_inlined_bytecodes = 0; | |
| 84 assert(task == NULL || thread->task() == task, "sanity"); | |
| 85 _task = task; | |
| 86 _log = NULL; | |
| 87 | |
| 88 // Temporary buffer for creating symbols and such. | |
| 89 _name_buffer = NULL; | |
| 90 _name_buffer_len = 0; | |
| 91 | |
| 92 _arena = &_ciEnv_arena; | |
| 93 _factory = new (_arena) ciObjectFactory(_arena, 128); | |
| 94 | |
| 95 // Preload commonly referenced system ciObjects. | |
| 96 | |
| 97 // During VM initialization, these instances have not yet been created. | |
| 98 // Assertions ensure that these instances are not accessed before | |
| 99 // their initialization. | |
| 100 | |
| 101 assert(Universe::is_fully_initialized(), "should be complete"); | |
| 102 | |
| 103 oop o = Universe::null_ptr_exception_instance(); | |
| 104 assert(o != NULL, "should have been initialized"); | |
| 105 _NullPointerException_instance = get_object(o)->as_instance(); | |
| 106 o = Universe::arithmetic_exception_instance(); | |
| 107 assert(o != NULL, "should have been initialized"); | |
| 108 _ArithmeticException_instance = get_object(o)->as_instance(); | |
| 109 | |
| 110 _ArrayIndexOutOfBoundsException_instance = NULL; | |
| 111 _ArrayStoreException_instance = NULL; | |
| 112 _ClassCastException_instance = NULL; | |
| 113 } | |
| 114 | |
| 115 ciEnv::ciEnv(Arena* arena) { | |
| 116 ASSERT_IN_VM; | |
| 117 | |
| 118 // Set up ciEnv::current immediately, for the sake of ciObjectFactory, etc. | |
| 119 CompilerThread* current_thread = CompilerThread::current(); | |
| 120 assert(current_thread->env() == NULL, "must be"); | |
| 121 current_thread->set_env(this); | |
| 122 assert(ciEnv::current() == this, "sanity"); | |
| 123 | |
| 124 _oop_recorder = NULL; | |
| 125 _debug_info = NULL; | |
| 126 _dependencies = NULL; | |
| 127 _failure_reason = NULL; | |
| 128 _compilable = MethodCompilable_never; | |
| 129 _break_at_compile = false; | |
| 130 _compiler_data = NULL; | |
| 131 #ifndef PRODUCT | |
| 132 assert(firstEnv, "must be first"); | |
| 133 firstEnv = false; | |
| 134 #endif /* !PRODUCT */ | |
| 135 | |
| 136 _system_dictionary_modification_counter = 0; | |
| 137 _num_inlined_bytecodes = 0; | |
| 138 _task = NULL; | |
| 139 _log = NULL; | |
| 140 | |
| 141 // Temporary buffer for creating symbols and such. | |
| 142 _name_buffer = NULL; | |
| 143 _name_buffer_len = 0; | |
| 144 | |
| 145 _arena = arena; | |
| 146 _factory = new (_arena) ciObjectFactory(_arena, 128); | |
| 147 | |
| 148 // Preload commonly referenced system ciObjects. | |
| 149 | |
| 150 // During VM initialization, these instances have not yet been created. | |
| 151 // Assertions ensure that these instances are not accessed before | |
| 152 // their initialization. | |
| 153 | |
| 154 assert(Universe::is_fully_initialized(), "must be"); | |
| 155 | |
| 156 oop o = Universe::null_ptr_exception_instance(); | |
| 157 assert(o != NULL, "should have been initialized"); | |
| 158 _NullPointerException_instance = get_object(o)->as_instance(); | |
| 159 o = Universe::arithmetic_exception_instance(); | |
| 160 assert(o != NULL, "should have been initialized"); | |
| 161 _ArithmeticException_instance = get_object(o)->as_instance(); | |
| 162 | |
| 163 _ArrayIndexOutOfBoundsException_instance = NULL; | |
| 164 _ArrayStoreException_instance = NULL; | |
| 165 _ClassCastException_instance = NULL; | |
| 166 } | |
| 167 | |
| 168 ciEnv::~ciEnv() { | |
| 169 CompilerThread* current_thread = CompilerThread::current(); | |
| 170 current_thread->set_env(NULL); | |
| 171 } | |
| 172 | |
| 173 // ------------------------------------------------------------------ | |
|
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174 // Cache Jvmti state |
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175 void ciEnv::cache_jvmti_state() { |
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176 VM_ENTRY_MARK; |
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177 // Get Jvmti capabilities under lock to get consistant values. |
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178 MutexLocker mu(JvmtiThreadState_lock); |
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179 _jvmti_can_hotswap_or_post_breakpoint = JvmtiExport::can_hotswap_or_post_breakpoint(); |
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180 _jvmti_can_examine_or_deopt_anywhere = JvmtiExport::can_examine_or_deopt_anywhere(); |
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181 _jvmti_can_access_local_variables = JvmtiExport::can_access_local_variables(); |
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182 _jvmti_can_post_exceptions = JvmtiExport::can_post_exceptions(); |
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183 } |
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184 |
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185 // ------------------------------------------------------------------ |
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186 // Cache DTrace flags |
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187 void ciEnv::cache_dtrace_flags() { |
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188 // Need lock? |
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189 _dtrace_extended_probes = ExtendedDTraceProbes; |
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190 if (_dtrace_extended_probes) { |
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191 _dtrace_monitor_probes = true; |
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192 _dtrace_method_probes = true; |
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193 _dtrace_alloc_probes = true; |
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194 } else { |
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195 _dtrace_monitor_probes = DTraceMonitorProbes; |
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196 _dtrace_method_probes = DTraceMethodProbes; |
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197 _dtrace_alloc_probes = DTraceAllocProbes; |
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198 } |
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199 } |
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200 |
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201 // ------------------------------------------------------------------ |
| 0 | 202 // helper for lazy exception creation |
| 203 ciInstance* ciEnv::get_or_create_exception(jobject& handle, symbolHandle name) { | |
| 204 VM_ENTRY_MARK; | |
| 205 if (handle == NULL) { | |
| 206 // Cf. universe.cpp, creation of Universe::_null_ptr_exception_instance. | |
| 207 klassOop k = SystemDictionary::find(name, Handle(), Handle(), THREAD); | |
| 208 jobject objh = NULL; | |
| 209 if (!HAS_PENDING_EXCEPTION && k != NULL) { | |
| 210 oop obj = instanceKlass::cast(k)->allocate_permanent_instance(THREAD); | |
| 211 if (!HAS_PENDING_EXCEPTION) | |
| 212 objh = JNIHandles::make_global(obj); | |
| 213 } | |
| 214 if (HAS_PENDING_EXCEPTION) { | |
| 215 CLEAR_PENDING_EXCEPTION; | |
| 216 } else { | |
| 217 handle = objh; | |
| 218 } | |
| 219 } | |
| 220 oop obj = JNIHandles::resolve(handle); | |
| 221 return obj == NULL? NULL: get_object(obj)->as_instance(); | |
| 222 } | |
| 223 | |
| 224 // ------------------------------------------------------------------ | |
| 225 // ciEnv::ArrayIndexOutOfBoundsException_instance, etc. | |
| 226 ciInstance* ciEnv::ArrayIndexOutOfBoundsException_instance() { | |
| 227 if (_ArrayIndexOutOfBoundsException_instance == NULL) { | |
| 228 _ArrayIndexOutOfBoundsException_instance | |
| 229 = get_or_create_exception(_ArrayIndexOutOfBoundsException_handle, | |
| 230 vmSymbolHandles::java_lang_ArrayIndexOutOfBoundsException()); | |
| 231 } | |
| 232 return _ArrayIndexOutOfBoundsException_instance; | |
| 233 } | |
| 234 ciInstance* ciEnv::ArrayStoreException_instance() { | |
| 235 if (_ArrayStoreException_instance == NULL) { | |
| 236 _ArrayStoreException_instance | |
| 237 = get_or_create_exception(_ArrayStoreException_handle, | |
| 238 vmSymbolHandles::java_lang_ArrayStoreException()); | |
| 239 } | |
| 240 return _ArrayStoreException_instance; | |
| 241 } | |
| 242 ciInstance* ciEnv::ClassCastException_instance() { | |
| 243 if (_ClassCastException_instance == NULL) { | |
| 244 _ClassCastException_instance | |
| 245 = get_or_create_exception(_ClassCastException_handle, | |
| 246 vmSymbolHandles::java_lang_ClassCastException()); | |
| 247 } | |
| 248 return _ClassCastException_instance; | |
| 249 } | |
| 250 | |
| 251 // ------------------------------------------------------------------ | |
| 252 // ciEnv::get_method_from_handle | |
| 253 ciMethod* ciEnv::get_method_from_handle(jobject method) { | |
| 254 VM_ENTRY_MARK; | |
| 255 return get_object(JNIHandles::resolve(method))->as_method(); | |
| 256 } | |
| 257 | |
| 258 // ------------------------------------------------------------------ | |
| 259 // ciEnv::make_array | |
|
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260 ciArray* ciEnv::make_system_array(GrowableArray<ciObject*>* objects) { |
| 0 | 261 VM_ENTRY_MARK; |
| 262 int length = objects->length(); | |
| 263 objArrayOop a = oopFactory::new_system_objArray(length, THREAD); | |
| 264 if (HAS_PENDING_EXCEPTION) { | |
| 265 CLEAR_PENDING_EXCEPTION; | |
| 266 record_out_of_memory_failure(); | |
| 267 return NULL; | |
| 268 } | |
| 269 for (int i = 0; i < length; i++) { | |
| 270 a->obj_at_put(i, objects->at(i)->get_oop()); | |
| 271 } | |
| 272 assert(a->is_perm(), ""); | |
| 273 return get_object(a)->as_array(); | |
| 274 } | |
| 275 | |
| 276 | |
| 277 // ------------------------------------------------------------------ | |
| 278 // ciEnv::array_element_offset_in_bytes | |
| 279 int ciEnv::array_element_offset_in_bytes(ciArray* a_h, ciObject* o_h) { | |
| 280 VM_ENTRY_MARK; | |
| 281 objArrayOop a = (objArrayOop)a_h->get_oop(); | |
| 282 assert(a->is_objArray(), ""); | |
| 283 int length = a->length(); | |
| 284 oop o = o_h->get_oop(); | |
| 285 for (int i = 0; i < length; i++) { | |
| 286 if (a->obj_at(i) == o) return i; | |
| 287 } | |
| 288 return -1; | |
| 289 } | |
| 290 | |
| 291 | |
| 292 // ------------------------------------------------------------------ | |
| 293 // ciEnv::check_klass_accessiblity | |
| 294 // | |
| 295 // Note: the logic of this method should mirror the logic of | |
| 296 // constantPoolOopDesc::verify_constant_pool_resolve. | |
| 297 bool ciEnv::check_klass_accessibility(ciKlass* accessing_klass, | |
| 298 klassOop resolved_klass) { | |
| 299 if (accessing_klass == NULL || !accessing_klass->is_loaded()) { | |
| 300 return true; | |
| 301 } | |
| 302 if (accessing_klass->is_obj_array()) { | |
| 303 accessing_klass = accessing_klass->as_obj_array_klass()->base_element_klass(); | |
| 304 } | |
| 305 if (!accessing_klass->is_instance_klass()) { | |
| 306 return true; | |
| 307 } | |
| 308 | |
| 309 if (resolved_klass->klass_part()->oop_is_objArray()) { | |
| 310 // Find the element klass, if this is an array. | |
| 311 resolved_klass = objArrayKlass::cast(resolved_klass)->bottom_klass(); | |
| 312 } | |
| 313 if (resolved_klass->klass_part()->oop_is_instance()) { | |
| 314 return Reflection::verify_class_access(accessing_klass->get_klassOop(), | |
| 315 resolved_klass, | |
| 316 true); | |
| 317 } | |
| 318 return true; | |
| 319 } | |
| 320 | |
| 321 // ------------------------------------------------------------------ | |
| 322 // ciEnv::get_klass_by_name_impl | |
| 323 ciKlass* ciEnv::get_klass_by_name_impl(ciKlass* accessing_klass, | |
| 324 ciSymbol* name, | |
| 325 bool require_local) { | |
| 326 ASSERT_IN_VM; | |
| 327 EXCEPTION_CONTEXT; | |
| 328 | |
| 329 // Now we need to check the SystemDictionary | |
| 330 symbolHandle sym(THREAD, name->get_symbolOop()); | |
| 331 if (sym->byte_at(0) == 'L' && | |
| 332 sym->byte_at(sym->utf8_length()-1) == ';') { | |
| 333 // This is a name from a signature. Strip off the trimmings. | |
| 334 sym = oopFactory::new_symbol_handle(sym->as_utf8()+1, | |
| 335 sym->utf8_length()-2, | |
| 336 KILL_COMPILE_ON_FATAL_(_unloaded_ciinstance_klass)); | |
| 337 name = get_object(sym())->as_symbol(); | |
| 338 } | |
| 339 | |
| 340 // Check for prior unloaded klass. The SystemDictionary's answers | |
| 341 // can vary over time but the compiler needs consistency. | |
| 342 ciKlass* unloaded_klass = check_get_unloaded_klass(accessing_klass, name); | |
| 343 if (unloaded_klass != NULL) { | |
| 344 if (require_local) return NULL; | |
| 345 return unloaded_klass; | |
| 346 } | |
| 347 | |
| 348 Handle loader(THREAD, (oop)NULL); | |
| 349 Handle domain(THREAD, (oop)NULL); | |
| 350 if (accessing_klass != NULL) { | |
| 351 loader = Handle(THREAD, accessing_klass->loader()); | |
| 352 domain = Handle(THREAD, accessing_klass->protection_domain()); | |
| 353 } | |
| 354 | |
| 355 // setup up the proper type to return on OOM | |
| 356 ciKlass* fail_type; | |
| 357 if (sym->byte_at(0) == '[') { | |
| 358 fail_type = _unloaded_ciobjarrayklass; | |
| 359 } else { | |
| 360 fail_type = _unloaded_ciinstance_klass; | |
| 361 } | |
| 362 klassOop found_klass; | |
| 363 if (!require_local) { | |
| 364 found_klass = | |
| 365 SystemDictionary::find_constrained_instance_or_array_klass(sym, loader, | |
| 366 KILL_COMPILE_ON_FATAL_(fail_type)); | |
| 367 } else { | |
| 368 found_klass = | |
| 369 SystemDictionary::find_instance_or_array_klass(sym, loader, domain, | |
| 370 KILL_COMPILE_ON_FATAL_(fail_type)); | |
| 371 } | |
| 372 | |
| 373 if (found_klass != NULL) { | |
| 374 // Found it. Build a CI handle. | |
| 375 return get_object(found_klass)->as_klass(); | |
| 376 } | |
| 377 | |
| 378 // If we fail to find an array klass, look again for its element type. | |
| 379 // The element type may be available either locally or via constraints. | |
| 380 // In either case, if we can find the element type in the system dictionary, | |
| 381 // we must build an array type around it. The CI requires array klasses | |
| 382 // to be loaded if their element klasses are loaded, except when memory | |
| 383 // is exhausted. | |
| 384 if (sym->byte_at(0) == '[' && | |
| 385 (sym->byte_at(1) == '[' || sym->byte_at(1) == 'L')) { | |
| 386 // We have an unloaded array. | |
| 387 // Build it on the fly if the element class exists. | |
| 388 symbolOop elem_sym = oopFactory::new_symbol(sym->as_utf8()+1, | |
| 389 sym->utf8_length()-1, | |
| 390 KILL_COMPILE_ON_FATAL_(fail_type)); | |
| 391 // Get element ciKlass recursively. | |
| 392 ciKlass* elem_klass = | |
| 393 get_klass_by_name_impl(accessing_klass, | |
| 394 get_object(elem_sym)->as_symbol(), | |
| 395 require_local); | |
| 396 if (elem_klass != NULL && elem_klass->is_loaded()) { | |
| 397 // Now make an array for it | |
| 398 return ciObjArrayKlass::make_impl(elem_klass); | |
| 399 } | |
| 400 } | |
| 401 | |
| 402 if (require_local) return NULL; | |
| 403 // Not yet loaded into the VM, or not governed by loader constraints. | |
| 404 // Make a CI representative for it. | |
| 405 return get_unloaded_klass(accessing_klass, name); | |
| 406 } | |
| 407 | |
| 408 // ------------------------------------------------------------------ | |
| 409 // ciEnv::get_klass_by_name | |
| 410 ciKlass* ciEnv::get_klass_by_name(ciKlass* accessing_klass, | |
| 411 ciSymbol* klass_name, | |
| 412 bool require_local) { | |
| 413 GUARDED_VM_ENTRY(return get_klass_by_name_impl(accessing_klass, | |
| 414 klass_name, | |
| 415 require_local);) | |
| 416 } | |
| 417 | |
| 418 // ------------------------------------------------------------------ | |
| 419 // ciEnv::get_klass_by_index_impl | |
| 420 // | |
| 421 // Implementation of get_klass_by_index. | |
| 422 ciKlass* ciEnv::get_klass_by_index_impl(ciInstanceKlass* accessor, | |
| 423 int index, | |
| 424 bool& is_accessible) { | |
| 425 assert(accessor->get_instanceKlass()->is_linked(), "must be linked before accessing constant pool"); | |
| 426 EXCEPTION_CONTEXT; | |
| 427 constantPoolHandle cpool(THREAD, accessor->get_instanceKlass()->constants()); | |
| 428 KlassHandle klass (THREAD, constantPoolOopDesc::klass_at_if_loaded(cpool, index)); | |
| 429 symbolHandle klass_name; | |
| 430 if (klass.is_null()) { | |
| 431 // The klass has not been inserted into the constant pool. | |
| 432 // Try to look it up by name. | |
| 433 { | |
| 434 // We have to lock the cpool to keep the oop from being resolved | |
| 435 // while we are accessing it. | |
| 436 ObjectLocker ol(cpool, THREAD); | |
| 437 | |
| 438 constantTag tag = cpool->tag_at(index); | |
| 439 if (tag.is_klass()) { | |
| 440 // The klass has been inserted into the constant pool | |
| 441 // very recently. | |
| 442 klass = KlassHandle(THREAD, cpool->resolved_klass_at(index)); | |
| 443 } else if (tag.is_symbol()) { | |
| 444 klass_name = symbolHandle(THREAD, cpool->symbol_at(index)); | |
| 445 } else { | |
| 446 assert(cpool->tag_at(index).is_unresolved_klass(), "wrong tag"); | |
| 447 klass_name = symbolHandle(THREAD, cpool->unresolved_klass_at(index)); | |
| 448 } | |
| 449 } | |
| 450 } | |
| 451 | |
| 452 if (klass.is_null()) { | |
| 453 // Not found in constant pool. Use the name to do the lookup. | |
| 454 ciKlass* k = get_klass_by_name_impl(accessor, | |
| 455 get_object(klass_name())->as_symbol(), | |
| 456 false); | |
| 457 // Calculate accessibility the hard way. | |
| 458 if (!k->is_loaded()) { | |
| 459 is_accessible = false; | |
| 460 } else if (k->loader() != accessor->loader() && | |
| 461 get_klass_by_name_impl(accessor, k->name(), true) == NULL) { | |
| 462 // Loaded only remotely. Not linked yet. | |
| 463 is_accessible = false; | |
| 464 } else { | |
| 465 // Linked locally, and we must also check public/private, etc. | |
| 466 is_accessible = check_klass_accessibility(accessor, k->get_klassOop()); | |
| 467 } | |
| 468 return k; | |
| 469 } | |
| 470 | |
| 471 // Check for prior unloaded klass. The SystemDictionary's answers | |
| 472 // can vary over time but the compiler needs consistency. | |
| 473 ciSymbol* name = get_object(klass()->klass_part()->name())->as_symbol(); | |
| 474 ciKlass* unloaded_klass = check_get_unloaded_klass(accessor, name); | |
| 475 if (unloaded_klass != NULL) { | |
| 476 is_accessible = false; | |
| 477 return unloaded_klass; | |
| 478 } | |
| 479 | |
| 480 // It is known to be accessible, since it was found in the constant pool. | |
| 481 is_accessible = true; | |
| 482 return get_object(klass())->as_klass(); | |
| 483 } | |
| 484 | |
| 485 // ------------------------------------------------------------------ | |
| 486 // ciEnv::get_klass_by_index | |
| 487 // | |
| 488 // Get a klass from the constant pool. | |
| 489 ciKlass* ciEnv::get_klass_by_index(ciInstanceKlass* accessor, | |
| 490 int index, | |
| 491 bool& is_accessible) { | |
| 492 GUARDED_VM_ENTRY(return get_klass_by_index_impl(accessor, index, is_accessible);) | |
| 493 } | |
| 494 | |
| 495 // ------------------------------------------------------------------ | |
| 496 // ciEnv::get_constant_by_index_impl | |
| 497 // | |
| 498 // Implementation of get_constant_by_index(). | |
| 499 ciConstant ciEnv::get_constant_by_index_impl(ciInstanceKlass* accessor, | |
| 500 int index) { | |
| 501 EXCEPTION_CONTEXT; | |
| 502 instanceKlass* ik_accessor = accessor->get_instanceKlass(); | |
| 503 assert(ik_accessor->is_linked(), "must be linked before accessing constant pool"); | |
| 504 constantPoolOop cpool = ik_accessor->constants(); | |
| 505 constantTag tag = cpool->tag_at(index); | |
| 506 if (tag.is_int()) { | |
| 507 return ciConstant(T_INT, (jint)cpool->int_at(index)); | |
| 508 } else if (tag.is_long()) { | |
| 509 return ciConstant((jlong)cpool->long_at(index)); | |
| 510 } else if (tag.is_float()) { | |
| 511 return ciConstant((jfloat)cpool->float_at(index)); | |
| 512 } else if (tag.is_double()) { | |
| 513 return ciConstant((jdouble)cpool->double_at(index)); | |
| 514 } else if (tag.is_string() || tag.is_unresolved_string()) { | |
|
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515 oop string = NULL; |
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516 if (cpool->is_pseudo_string_at(index)) { |
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517 string = cpool->pseudo_string_at(index); |
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518 } else { |
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519 string = cpool->string_at(index, THREAD); |
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520 if (HAS_PENDING_EXCEPTION) { |
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521 CLEAR_PENDING_EXCEPTION; |
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522 record_out_of_memory_failure(); |
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523 return ciConstant(); |
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524 } |
| 0 | 525 } |
| 526 ciObject* constant = get_object(string); | |
| 527 assert (constant->is_instance(), "must be an instance, or not? "); | |
| 528 return ciConstant(T_OBJECT, constant); | |
| 529 } else if (tag.is_klass() || tag.is_unresolved_klass()) { | |
| 530 // 4881222: allow ldc to take a class type | |
| 531 bool ignore; | |
| 532 ciKlass* klass = get_klass_by_index_impl(accessor, index, ignore); | |
| 533 if (HAS_PENDING_EXCEPTION) { | |
| 534 CLEAR_PENDING_EXCEPTION; | |
| 535 record_out_of_memory_failure(); | |
| 536 return ciConstant(); | |
| 537 } | |
| 538 assert (klass->is_instance_klass() || klass->is_array_klass(), | |
| 539 "must be an instance or array klass "); | |
| 540 return ciConstant(T_OBJECT, klass); | |
| 541 } else { | |
| 542 ShouldNotReachHere(); | |
| 543 return ciConstant(); | |
| 544 } | |
| 545 } | |
| 546 | |
| 547 // ------------------------------------------------------------------ | |
| 548 // ciEnv::is_unresolved_string_impl | |
| 549 // | |
| 550 // Implementation of is_unresolved_string(). | |
| 551 bool ciEnv::is_unresolved_string_impl(instanceKlass* accessor, int index) const { | |
| 552 EXCEPTION_CONTEXT; | |
| 553 assert(accessor->is_linked(), "must be linked before accessing constant pool"); | |
| 554 constantPoolOop cpool = accessor->constants(); | |
| 555 constantTag tag = cpool->tag_at(index); | |
| 556 return tag.is_unresolved_string(); | |
| 557 } | |
| 558 | |
| 559 // ------------------------------------------------------------------ | |
| 560 // ciEnv::is_unresolved_klass_impl | |
| 561 // | |
| 562 // Implementation of is_unresolved_klass(). | |
| 563 bool ciEnv::is_unresolved_klass_impl(instanceKlass* accessor, int index) const { | |
| 564 EXCEPTION_CONTEXT; | |
| 565 assert(accessor->is_linked(), "must be linked before accessing constant pool"); | |
| 566 constantPoolOop cpool = accessor->constants(); | |
| 567 constantTag tag = cpool->tag_at(index); | |
| 568 return tag.is_unresolved_klass(); | |
| 569 } | |
| 570 | |
| 571 // ------------------------------------------------------------------ | |
| 572 // ciEnv::get_constant_by_index | |
| 573 // | |
| 574 // Pull a constant out of the constant pool. How appropriate. | |
| 575 // | |
| 576 // Implementation note: this query is currently in no way cached. | |
| 577 ciConstant ciEnv::get_constant_by_index(ciInstanceKlass* accessor, | |
| 578 int index) { | |
| 579 GUARDED_VM_ENTRY(return get_constant_by_index_impl(accessor, index); ) | |
| 580 } | |
| 581 | |
| 582 // ------------------------------------------------------------------ | |
| 583 // ciEnv::is_unresolved_string | |
| 584 // | |
| 585 // Check constant pool | |
| 586 // | |
| 587 // Implementation note: this query is currently in no way cached. | |
| 588 bool ciEnv::is_unresolved_string(ciInstanceKlass* accessor, | |
| 589 int index) const { | |
| 590 GUARDED_VM_ENTRY(return is_unresolved_string_impl(accessor->get_instanceKlass(), index); ) | |
| 591 } | |
| 592 | |
| 593 // ------------------------------------------------------------------ | |
| 594 // ciEnv::is_unresolved_klass | |
| 595 // | |
| 596 // Check constant pool | |
| 597 // | |
| 598 // Implementation note: this query is currently in no way cached. | |
| 599 bool ciEnv::is_unresolved_klass(ciInstanceKlass* accessor, | |
| 600 int index) const { | |
| 601 GUARDED_VM_ENTRY(return is_unresolved_klass_impl(accessor->get_instanceKlass(), index); ) | |
| 602 } | |
| 603 | |
| 604 // ------------------------------------------------------------------ | |
| 605 // ciEnv::get_field_by_index_impl | |
| 606 // | |
| 607 // Implementation of get_field_by_index. | |
| 608 // | |
| 609 // Implementation note: the results of field lookups are cached | |
| 610 // in the accessor klass. | |
| 611 ciField* ciEnv::get_field_by_index_impl(ciInstanceKlass* accessor, | |
| 612 int index) { | |
| 613 ciConstantPoolCache* cache = accessor->field_cache(); | |
| 614 if (cache == NULL) { | |
| 615 ciField* field = new (arena()) ciField(accessor, index); | |
| 616 return field; | |
| 617 } else { | |
| 618 ciField* field = (ciField*)cache->get(index); | |
| 619 if (field == NULL) { | |
| 620 field = new (arena()) ciField(accessor, index); | |
| 621 cache->insert(index, field); | |
| 622 } | |
| 623 return field; | |
| 624 } | |
| 625 } | |
| 626 | |
| 627 // ------------------------------------------------------------------ | |
| 628 // ciEnv::get_field_by_index | |
| 629 // | |
| 630 // Get a field by index from a klass's constant pool. | |
| 631 ciField* ciEnv::get_field_by_index(ciInstanceKlass* accessor, | |
| 632 int index) { | |
| 633 GUARDED_VM_ENTRY(return get_field_by_index_impl(accessor, index);) | |
| 634 } | |
| 635 | |
| 636 // ------------------------------------------------------------------ | |
| 637 // ciEnv::lookup_method | |
| 638 // | |
| 639 // Perform an appropriate method lookup based on accessor, holder, | |
| 640 // name, signature, and bytecode. | |
| 641 methodOop ciEnv::lookup_method(instanceKlass* accessor, | |
| 642 instanceKlass* holder, | |
| 643 symbolOop name, | |
| 644 symbolOop sig, | |
| 645 Bytecodes::Code bc) { | |
| 646 EXCEPTION_CONTEXT; | |
| 647 KlassHandle h_accessor(THREAD, accessor); | |
| 648 KlassHandle h_holder(THREAD, holder); | |
| 649 symbolHandle h_name(THREAD, name); | |
| 650 symbolHandle h_sig(THREAD, sig); | |
| 651 LinkResolver::check_klass_accessability(h_accessor, h_holder, KILL_COMPILE_ON_FATAL_(NULL)); | |
| 652 methodHandle dest_method; | |
| 653 switch (bc) { | |
| 654 case Bytecodes::_invokestatic: | |
| 655 dest_method = | |
| 656 LinkResolver::resolve_static_call_or_null(h_holder, h_name, h_sig, h_accessor); | |
| 657 break; | |
| 658 case Bytecodes::_invokespecial: | |
| 659 dest_method = | |
| 660 LinkResolver::resolve_special_call_or_null(h_holder, h_name, h_sig, h_accessor); | |
| 661 break; | |
| 662 case Bytecodes::_invokeinterface: | |
| 663 dest_method = | |
| 664 LinkResolver::linktime_resolve_interface_method_or_null(h_holder, h_name, h_sig, | |
| 665 h_accessor, true); | |
| 666 break; | |
| 667 case Bytecodes::_invokevirtual: | |
| 668 dest_method = | |
| 669 LinkResolver::linktime_resolve_virtual_method_or_null(h_holder, h_name, h_sig, | |
| 670 h_accessor, true); | |
| 671 break; | |
| 672 default: ShouldNotReachHere(); | |
| 673 } | |
| 674 | |
| 675 return dest_method(); | |
| 676 } | |
| 677 | |
| 678 | |
| 679 // ------------------------------------------------------------------ | |
| 680 // ciEnv::get_method_by_index_impl | |
| 681 ciMethod* ciEnv::get_method_by_index_impl(ciInstanceKlass* accessor, | |
| 682 int index, Bytecodes::Code bc) { | |
| 683 // Get the method's declared holder. | |
| 684 | |
| 685 assert(accessor->get_instanceKlass()->is_linked(), "must be linked before accessing constant pool"); | |
| 686 constantPoolHandle cpool = accessor->get_instanceKlass()->constants(); | |
| 687 int holder_index = cpool->klass_ref_index_at(index); | |
| 688 bool holder_is_accessible; | |
| 689 ciKlass* holder = get_klass_by_index_impl(accessor, holder_index, holder_is_accessible); | |
| 690 ciInstanceKlass* declared_holder = get_instance_klass_for_declared_method_holder(holder); | |
| 691 | |
| 692 // Get the method's name and signature. | |
| 693 int nt_index = cpool->name_and_type_ref_index_at(index); | |
| 694 int sig_index = cpool->signature_ref_index_at(nt_index); | |
| 695 symbolOop name_sym = cpool->name_ref_at(index); | |
| 696 symbolOop sig_sym = cpool->symbol_at(sig_index); | |
| 697 | |
| 698 if (holder_is_accessible) { // Our declared holder is loaded. | |
| 699 instanceKlass* lookup = declared_holder->get_instanceKlass(); | |
| 700 methodOop m = lookup_method(accessor->get_instanceKlass(), lookup, name_sym, sig_sym, bc); | |
| 701 if (m != NULL) { | |
| 702 // We found the method. | |
| 703 return get_object(m)->as_method(); | |
| 704 } | |
| 705 } | |
| 706 | |
| 707 // Either the declared holder was not loaded, or the method could | |
| 708 // not be found. Create a dummy ciMethod to represent the failed | |
| 709 // lookup. | |
| 710 | |
| 711 return get_unloaded_method(declared_holder, | |
| 712 get_object(name_sym)->as_symbol(), | |
| 713 get_object(sig_sym)->as_symbol()); | |
| 714 } | |
| 715 | |
| 716 | |
| 717 // ------------------------------------------------------------------ | |
| 718 // ciEnv::get_instance_klass_for_declared_method_holder | |
| 719 ciInstanceKlass* ciEnv::get_instance_klass_for_declared_method_holder(ciKlass* method_holder) { | |
| 720 // For the case of <array>.clone(), the method holder can be a ciArrayKlass | |
| 721 // instead of a ciInstanceKlass. For that case simply pretend that the | |
| 722 // declared holder is Object.clone since that's where the call will bottom out. | |
| 723 // A more correct fix would trickle out through many interfaces in CI, | |
| 724 // requiring ciInstanceKlass* to become ciKlass* and many more places would | |
| 725 // require checks to make sure the expected type was found. Given that this | |
| 726 // only occurs for clone() the more extensive fix seems like overkill so | |
| 727 // instead we simply smear the array type into Object. | |
| 728 if (method_holder->is_instance_klass()) { | |
| 729 return method_holder->as_instance_klass(); | |
| 730 } else if (method_holder->is_array_klass()) { | |
| 731 return current()->Object_klass(); | |
| 732 } else { | |
| 733 ShouldNotReachHere(); | |
| 734 } | |
| 735 return NULL; | |
| 736 } | |
| 737 | |
| 738 | |
| 739 | |
| 740 | |
| 741 // ------------------------------------------------------------------ | |
| 742 // ciEnv::get_method_by_index | |
| 743 ciMethod* ciEnv::get_method_by_index(ciInstanceKlass* accessor, | |
| 744 int index, Bytecodes::Code bc) { | |
| 745 GUARDED_VM_ENTRY(return get_method_by_index_impl(accessor, index, bc);) | |
| 746 } | |
| 747 | |
| 748 // ------------------------------------------------------------------ | |
| 749 // ciEnv::name_buffer | |
| 750 char *ciEnv::name_buffer(int req_len) { | |
| 751 if (_name_buffer_len < req_len) { | |
| 752 if (_name_buffer == NULL) { | |
| 753 _name_buffer = (char*)arena()->Amalloc(sizeof(char)*req_len); | |
| 754 _name_buffer_len = req_len; | |
| 755 } else { | |
| 756 _name_buffer = | |
| 757 (char*)arena()->Arealloc(_name_buffer, _name_buffer_len, req_len); | |
| 758 _name_buffer_len = req_len; | |
| 759 } | |
| 760 } | |
| 761 return _name_buffer; | |
| 762 } | |
| 763 | |
| 764 // ------------------------------------------------------------------ | |
| 765 // ciEnv::is_in_vm | |
| 766 bool ciEnv::is_in_vm() { | |
| 767 return JavaThread::current()->thread_state() == _thread_in_vm; | |
| 768 } | |
| 769 | |
| 770 bool ciEnv::system_dictionary_modification_counter_changed() { | |
| 771 return _system_dictionary_modification_counter != SystemDictionary::number_of_modifications(); | |
| 772 } | |
| 773 | |
| 774 // ------------------------------------------------------------------ | |
| 775 // ciEnv::check_for_system_dictionary_modification | |
| 776 // Check for changes to the system dictionary during compilation | |
| 777 // class loads, evolution, breakpoints | |
| 778 void ciEnv::check_for_system_dictionary_modification(ciMethod* target) { | |
| 779 if (failing()) return; // no need for further checks | |
| 780 | |
| 781 // Dependencies must be checked when the system dictionary changes. | |
| 782 // If logging is enabled all violated dependences will be recorded in | |
| 783 // the log. In debug mode check dependencies even if the system | |
| 784 // dictionary hasn't changed to verify that no invalid dependencies | |
| 785 // were inserted. Any violated dependences in this case are dumped to | |
| 786 // the tty. | |
| 787 | |
| 788 bool counter_changed = system_dictionary_modification_counter_changed(); | |
| 789 bool test_deps = counter_changed; | |
| 790 DEBUG_ONLY(test_deps = true); | |
| 791 if (!test_deps) return; | |
| 792 | |
| 793 bool print_failures = false; | |
| 794 DEBUG_ONLY(print_failures = !counter_changed); | |
| 795 | |
| 796 bool keep_going = (print_failures || xtty != NULL); | |
| 797 | |
| 798 int violated = 0; | |
| 799 | |
| 800 for (Dependencies::DepStream deps(dependencies()); deps.next(); ) { | |
| 801 klassOop witness = deps.check_dependency(); | |
| 802 if (witness != NULL) { | |
| 803 ++violated; | |
| 804 if (print_failures) deps.print_dependency(witness, /*verbose=*/ true); | |
| 805 // If there's no log and we're not sanity-checking, we're done. | |
| 806 if (!keep_going) break; | |
| 807 } | |
| 808 } | |
| 809 | |
| 810 if (violated != 0) { | |
| 811 assert(counter_changed, "failed dependencies, but counter didn't change"); | |
| 812 record_failure("concurrent class loading"); | |
| 813 } | |
| 814 } | |
| 815 | |
| 816 // ------------------------------------------------------------------ | |
| 817 // ciEnv::register_method | |
| 818 void ciEnv::register_method(ciMethod* target, | |
| 819 int entry_bci, | |
| 820 CodeOffsets* offsets, | |
| 821 int orig_pc_offset, | |
| 822 CodeBuffer* code_buffer, | |
| 823 int frame_words, | |
| 824 OopMapSet* oop_map_set, | |
| 825 ExceptionHandlerTable* handler_table, | |
| 826 ImplicitExceptionTable* inc_table, | |
| 827 AbstractCompiler* compiler, | |
| 828 int comp_level, | |
| 829 bool has_debug_info, | |
| 830 bool has_unsafe_access) { | |
| 831 VM_ENTRY_MARK; | |
| 832 nmethod* nm = NULL; | |
| 833 { | |
| 834 // To prevent compile queue updates. | |
| 835 MutexLocker locker(MethodCompileQueue_lock, THREAD); | |
| 836 | |
| 837 // Prevent SystemDictionary::add_to_hierarchy from running | |
| 838 // and invalidating our dependencies until we install this method. | |
| 839 MutexLocker ml(Compile_lock); | |
| 840 | |
|
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841 // Change in Jvmti state may invalidate compilation. |
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842 if (!failing() && |
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843 ( (!jvmti_can_hotswap_or_post_breakpoint() && |
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844 JvmtiExport::can_hotswap_or_post_breakpoint()) || |
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845 (!jvmti_can_examine_or_deopt_anywhere() && |
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846 JvmtiExport::can_examine_or_deopt_anywhere()) || |
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847 (!jvmti_can_access_local_variables() && |
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848 JvmtiExport::can_access_local_variables()) || |
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849 (!jvmti_can_post_exceptions() && |
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850 JvmtiExport::can_post_exceptions()) )) { |
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851 record_failure("Jvmti state change invalidated dependencies"); |
| 0 | 852 } |
| 853 | |
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854 // Change in DTrace flags may invalidate compilation. |
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855 if (!failing() && |
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856 ( (!dtrace_extended_probes() && ExtendedDTraceProbes) || |
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857 (!dtrace_method_probes() && DTraceMethodProbes) || |
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858 (!dtrace_alloc_probes() && DTraceAllocProbes) )) { |
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859 record_failure("DTrace flags change invalidated dependencies"); |
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860 } |
| 0 | 861 |
|
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862 if (!failing()) { |
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863 if (log() != NULL) { |
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864 // Log the dependencies which this compilation declares. |
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865 dependencies()->log_all_dependencies(); |
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866 } |
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867 |
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868 // Encode the dependencies now, so we can check them right away. |
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869 dependencies()->encode_content_bytes(); |
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870 |
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871 // Check for {class loads, evolution, breakpoints} during compilation |
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872 check_for_system_dictionary_modification(target); |
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873 } |
| 0 | 874 |
| 875 methodHandle method(THREAD, target->get_methodOop()); | |
| 876 | |
| 877 if (failing()) { | |
| 878 // While not a true deoptimization, it is a preemptive decompile. | |
| 879 methodDataOop mdo = method()->method_data(); | |
| 880 if (mdo != NULL) { | |
| 881 mdo->inc_decompile_count(); | |
| 882 } | |
| 883 | |
| 884 // All buffers in the CodeBuffer are allocated in the CodeCache. | |
| 885 // If the code buffer is created on each compile attempt | |
| 886 // as in C2, then it must be freed. | |
| 887 code_buffer->free_blob(); | |
| 888 return; | |
| 889 } | |
| 890 | |
| 891 assert(offsets->value(CodeOffsets::Deopt) != -1, "must have deopt entry"); | |
| 892 assert(offsets->value(CodeOffsets::Exceptions) != -1, "must have exception entry"); | |
| 893 | |
| 894 nm = nmethod::new_nmethod(method, | |
| 895 compile_id(), | |
| 896 entry_bci, | |
| 897 offsets, | |
| 898 orig_pc_offset, | |
| 899 debug_info(), dependencies(), code_buffer, | |
| 900 frame_words, oop_map_set, | |
| 901 handler_table, inc_table, | |
| 902 compiler, comp_level); | |
| 903 | |
| 904 // Free codeBlobs | |
| 905 code_buffer->free_blob(); | |
| 906 | |
| 907 // stress test 6243940 by immediately making the method | |
| 908 // non-entrant behind the system's back. This has serious | |
| 909 // side effects on the code cache and is not meant for | |
| 910 // general stress testing | |
| 911 if (nm != NULL && StressNonEntrant) { | |
| 912 MutexLockerEx pl(Patching_lock, Mutex::_no_safepoint_check_flag); | |
| 913 NativeJump::patch_verified_entry(nm->entry_point(), nm->verified_entry_point(), | |
| 914 SharedRuntime::get_handle_wrong_method_stub()); | |
| 915 } | |
| 916 | |
| 917 if (nm == NULL) { | |
| 918 // The CodeCache is full. Print out warning and disable compilation. | |
| 919 record_failure("code cache is full"); | |
| 920 UseInterpreter = true; | |
| 921 if (UseCompiler || AlwaysCompileLoopMethods ) { | |
| 922 #ifndef PRODUCT | |
| 923 warning("CodeCache is full. Compiler has been disabled"); | |
| 924 if (CompileTheWorld || ExitOnFullCodeCache) { | |
| 925 before_exit(JavaThread::current()); | |
| 926 exit_globals(); // will delete tty | |
| 927 vm_direct_exit(CompileTheWorld ? 0 : 1); | |
| 928 } | |
| 929 #endif | |
| 930 UseCompiler = false; | |
| 931 AlwaysCompileLoopMethods = false; | |
| 932 } | |
| 933 } else { | |
| 934 NOT_PRODUCT(nm->set_has_debug_info(has_debug_info); ) | |
| 935 nm->set_has_unsafe_access(has_unsafe_access); | |
| 936 | |
| 937 // Record successful registration. | |
| 938 // (Put nm into the task handle *before* publishing to the Java heap.) | |
| 939 if (task() != NULL) task()->set_code(nm); | |
| 940 | |
| 941 if (entry_bci == InvocationEntryBci) { | |
| 942 #ifdef TIERED | |
| 943 // If there is an old version we're done with it | |
| 944 nmethod* old = method->code(); | |
| 945 if (TraceMethodReplacement && old != NULL) { | |
| 946 ResourceMark rm; | |
| 947 char *method_name = method->name_and_sig_as_C_string(); | |
| 948 tty->print_cr("Replacing method %s", method_name); | |
| 949 } | |
| 950 if (old != NULL ) { | |
| 951 old->make_not_entrant(); | |
| 952 } | |
| 953 #endif // TIERED | |
| 954 if (TraceNMethodInstalls ) { | |
| 955 ResourceMark rm; | |
| 956 char *method_name = method->name_and_sig_as_C_string(); | |
| 957 ttyLocker ttyl; | |
| 958 tty->print_cr("Installing method (%d) %s ", | |
| 959 comp_level, | |
| 960 method_name); | |
| 961 } | |
| 962 // Allow the code to be executed | |
| 963 method->set_code(method, nm); | |
| 964 } else { | |
| 965 if (TraceNMethodInstalls ) { | |
| 966 ResourceMark rm; | |
| 967 char *method_name = method->name_and_sig_as_C_string(); | |
| 968 ttyLocker ttyl; | |
| 969 tty->print_cr("Installing osr method (%d) %s @ %d", | |
| 970 comp_level, | |
| 971 method_name, | |
| 972 entry_bci); | |
| 973 } | |
| 974 instanceKlass::cast(method->method_holder())->add_osr_nmethod(nm); | |
| 975 | |
| 976 } | |
| 977 } | |
| 978 } | |
| 979 // JVMTI -- compiled method notification (must be done outside lock) | |
| 980 if (nm != NULL) { | |
| 981 nm->post_compiled_method_load_event(); | |
| 982 } | |
| 983 | |
| 984 } | |
| 985 | |
| 986 | |
| 987 // ------------------------------------------------------------------ | |
| 988 // ciEnv::find_system_klass | |
| 989 ciKlass* ciEnv::find_system_klass(ciSymbol* klass_name) { | |
| 990 VM_ENTRY_MARK; | |
| 991 return get_klass_by_name_impl(NULL, klass_name, false); | |
| 992 } | |
| 993 | |
| 994 // ------------------------------------------------------------------ | |
| 995 // ciEnv::comp_level | |
| 996 int ciEnv::comp_level() { | |
| 997 if (task() == NULL) return CompLevel_full_optimization; | |
| 998 return task()->comp_level(); | |
| 999 } | |
| 1000 | |
| 1001 // ------------------------------------------------------------------ | |
| 1002 // ciEnv::compile_id | |
| 1003 uint ciEnv::compile_id() { | |
| 1004 if (task() == NULL) return 0; | |
| 1005 return task()->compile_id(); | |
| 1006 } | |
| 1007 | |
| 1008 // ------------------------------------------------------------------ | |
| 1009 // ciEnv::notice_inlined_method() | |
| 1010 void ciEnv::notice_inlined_method(ciMethod* method) { | |
| 1011 _num_inlined_bytecodes += method->code_size(); | |
| 1012 } | |
| 1013 | |
| 1014 // ------------------------------------------------------------------ | |
| 1015 // ciEnv::num_inlined_bytecodes() | |
| 1016 int ciEnv::num_inlined_bytecodes() const { | |
| 1017 return _num_inlined_bytecodes; | |
| 1018 } | |
| 1019 | |
| 1020 // ------------------------------------------------------------------ | |
| 1021 // ciEnv::record_failure() | |
| 1022 void ciEnv::record_failure(const char* reason) { | |
| 1023 if (log() != NULL) { | |
| 1024 log()->elem("failure reason='%s'", reason); | |
| 1025 } | |
| 1026 if (_failure_reason == NULL) { | |
| 1027 // Record the first failure reason. | |
| 1028 _failure_reason = reason; | |
| 1029 } | |
| 1030 } | |
| 1031 | |
| 1032 // ------------------------------------------------------------------ | |
| 1033 // ciEnv::record_method_not_compilable() | |
| 1034 void ciEnv::record_method_not_compilable(const char* reason, bool all_tiers) { | |
| 1035 int new_compilable = | |
| 1036 all_tiers ? MethodCompilable_never : MethodCompilable_not_at_tier ; | |
| 1037 | |
| 1038 // Only note transitions to a worse state | |
| 1039 if (new_compilable > _compilable) { | |
| 1040 if (log() != NULL) { | |
| 1041 if (all_tiers) { | |
| 1042 log()->elem("method_not_compilable"); | |
| 1043 } else { | |
| 1044 log()->elem("method_not_compilable_at_tier"); | |
| 1045 } | |
| 1046 } | |
| 1047 _compilable = new_compilable; | |
| 1048 | |
| 1049 // Reset failure reason; this one is more important. | |
| 1050 _failure_reason = NULL; | |
| 1051 record_failure(reason); | |
| 1052 } | |
| 1053 } | |
| 1054 | |
| 1055 // ------------------------------------------------------------------ | |
| 1056 // ciEnv::record_out_of_memory_failure() | |
| 1057 void ciEnv::record_out_of_memory_failure() { | |
| 1058 // If memory is low, we stop compiling methods. | |
| 1059 record_method_not_compilable("out of memory"); | |
| 1060 } |