Mercurial > hg > truffle
annotate src/share/vm/ci/ciEnv.cpp @ 1662:e0ba4e04c839
6969574: invokedynamic call sites deoptimize instead of executing
Reviewed-by: kvn
| author | jrose |
|---|---|
| date | Fri, 16 Jul 2010 18:14:19 -0700 |
| parents | 136b78722a08 |
| children | d5d065957597 |
| 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 #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 | |
| 1142 | 41 #define WK_KLASS_DEFN(name, ignore_s, ignore_o) ciInstanceKlass* ciEnv::_##name = NULL; |
| 42 WK_KLASSES_DO(WK_KLASS_DEFN) | |
| 43 #undef WK_KLASS_DEFN | |
| 0 | 44 |
| 45 ciSymbol* ciEnv::_unloaded_cisymbol = NULL; | |
| 46 ciInstanceKlass* ciEnv::_unloaded_ciinstance_klass = NULL; | |
| 47 ciObjArrayKlass* ciEnv::_unloaded_ciobjarrayklass = NULL; | |
| 48 | |
| 49 jobject ciEnv::_ArrayIndexOutOfBoundsException_handle = NULL; | |
| 50 jobject ciEnv::_ArrayStoreException_handle = NULL; | |
| 51 jobject ciEnv::_ClassCastException_handle = NULL; | |
| 52 | |
| 53 #ifndef PRODUCT | |
| 54 static bool firstEnv = true; | |
| 55 #endif /* PRODUCT */ | |
| 56 | |
| 57 // ------------------------------------------------------------------ | |
| 58 // ciEnv::ciEnv | |
| 59 ciEnv::ciEnv(CompileTask* task, int system_dictionary_modification_counter) { | |
| 60 VM_ENTRY_MARK; | |
| 61 | |
| 62 // Set up ciEnv::current immediately, for the sake of ciObjectFactory, etc. | |
| 63 thread->set_env(this); | |
| 64 assert(ciEnv::current() == this, "sanity"); | |
| 65 | |
| 66 _oop_recorder = NULL; | |
| 67 _debug_info = NULL; | |
| 68 _dependencies = NULL; | |
| 69 _failure_reason = NULL; | |
| 70 _compilable = MethodCompilable; | |
| 71 _break_at_compile = false; | |
| 72 _compiler_data = NULL; | |
| 73 #ifndef PRODUCT | |
| 74 assert(!firstEnv, "not initialized properly"); | |
| 75 #endif /* !PRODUCT */ | |
| 76 | |
| 77 _system_dictionary_modification_counter = system_dictionary_modification_counter; | |
| 78 _num_inlined_bytecodes = 0; | |
| 79 assert(task == NULL || thread->task() == task, "sanity"); | |
| 80 _task = task; | |
| 81 _log = NULL; | |
| 82 | |
| 83 // Temporary buffer for creating symbols and such. | |
| 84 _name_buffer = NULL; | |
| 85 _name_buffer_len = 0; | |
| 86 | |
| 87 _arena = &_ciEnv_arena; | |
| 88 _factory = new (_arena) ciObjectFactory(_arena, 128); | |
| 89 | |
| 90 // Preload commonly referenced system ciObjects. | |
| 91 | |
| 92 // During VM initialization, these instances have not yet been created. | |
| 93 // Assertions ensure that these instances are not accessed before | |
| 94 // their initialization. | |
| 95 | |
| 96 assert(Universe::is_fully_initialized(), "should be complete"); | |
| 97 | |
| 98 oop o = Universe::null_ptr_exception_instance(); | |
| 99 assert(o != NULL, "should have been initialized"); | |
| 100 _NullPointerException_instance = get_object(o)->as_instance(); | |
| 101 o = Universe::arithmetic_exception_instance(); | |
| 102 assert(o != NULL, "should have been initialized"); | |
| 103 _ArithmeticException_instance = get_object(o)->as_instance(); | |
| 104 | |
| 105 _ArrayIndexOutOfBoundsException_instance = NULL; | |
| 106 _ArrayStoreException_instance = NULL; | |
| 107 _ClassCastException_instance = NULL; | |
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108 _the_null_string = NULL; |
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109 _the_min_jint_string = NULL; |
| 0 | 110 } |
| 111 | |
| 112 ciEnv::ciEnv(Arena* arena) { | |
| 113 ASSERT_IN_VM; | |
| 114 | |
| 115 // Set up ciEnv::current immediately, for the sake of ciObjectFactory, etc. | |
| 116 CompilerThread* current_thread = CompilerThread::current(); | |
| 117 assert(current_thread->env() == NULL, "must be"); | |
| 118 current_thread->set_env(this); | |
| 119 assert(ciEnv::current() == this, "sanity"); | |
| 120 | |
| 121 _oop_recorder = NULL; | |
| 122 _debug_info = NULL; | |
| 123 _dependencies = NULL; | |
| 124 _failure_reason = NULL; | |
| 125 _compilable = MethodCompilable_never; | |
| 126 _break_at_compile = false; | |
| 127 _compiler_data = NULL; | |
| 128 #ifndef PRODUCT | |
| 129 assert(firstEnv, "must be first"); | |
| 130 firstEnv = false; | |
| 131 #endif /* !PRODUCT */ | |
| 132 | |
| 133 _system_dictionary_modification_counter = 0; | |
| 134 _num_inlined_bytecodes = 0; | |
| 135 _task = NULL; | |
| 136 _log = NULL; | |
| 137 | |
| 138 // Temporary buffer for creating symbols and such. | |
| 139 _name_buffer = NULL; | |
| 140 _name_buffer_len = 0; | |
| 141 | |
| 142 _arena = arena; | |
| 143 _factory = new (_arena) ciObjectFactory(_arena, 128); | |
| 144 | |
| 145 // Preload commonly referenced system ciObjects. | |
| 146 | |
| 147 // During VM initialization, these instances have not yet been created. | |
| 148 // Assertions ensure that these instances are not accessed before | |
| 149 // their initialization. | |
| 150 | |
| 151 assert(Universe::is_fully_initialized(), "must be"); | |
| 152 | |
| 153 oop o = Universe::null_ptr_exception_instance(); | |
| 154 assert(o != NULL, "should have been initialized"); | |
| 155 _NullPointerException_instance = get_object(o)->as_instance(); | |
| 156 o = Universe::arithmetic_exception_instance(); | |
| 157 assert(o != NULL, "should have been initialized"); | |
| 158 _ArithmeticException_instance = get_object(o)->as_instance(); | |
| 159 | |
| 160 _ArrayIndexOutOfBoundsException_instance = NULL; | |
| 161 _ArrayStoreException_instance = NULL; | |
| 162 _ClassCastException_instance = NULL; | |
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163 _the_null_string = NULL; |
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164 _the_min_jint_string = NULL; |
| 0 | 165 } |
| 166 | |
| 167 ciEnv::~ciEnv() { | |
| 168 CompilerThread* current_thread = CompilerThread::current(); | |
| 169 current_thread->set_env(NULL); | |
| 170 } | |
| 171 | |
| 172 // ------------------------------------------------------------------ | |
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173 // Cache Jvmti state |
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174 void ciEnv::cache_jvmti_state() { |
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175 VM_ENTRY_MARK; |
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176 // Get Jvmti capabilities under lock to get consistant values. |
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177 MutexLocker mu(JvmtiThreadState_lock); |
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178 _jvmti_can_hotswap_or_post_breakpoint = JvmtiExport::can_hotswap_or_post_breakpoint(); |
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179 _jvmti_can_access_local_variables = JvmtiExport::can_access_local_variables(); |
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180 _jvmti_can_post_on_exceptions = JvmtiExport::can_post_on_exceptions(); |
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181 } |
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182 |
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183 // ------------------------------------------------------------------ |
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184 // Cache DTrace flags |
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185 void ciEnv::cache_dtrace_flags() { |
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186 // Need lock? |
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187 _dtrace_extended_probes = ExtendedDTraceProbes; |
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188 if (_dtrace_extended_probes) { |
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189 _dtrace_monitor_probes = true; |
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190 _dtrace_method_probes = true; |
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191 _dtrace_alloc_probes = true; |
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192 } else { |
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193 _dtrace_monitor_probes = DTraceMonitorProbes; |
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194 _dtrace_method_probes = DTraceMethodProbes; |
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195 _dtrace_alloc_probes = DTraceAllocProbes; |
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196 } |
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197 } |
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198 |
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199 // ------------------------------------------------------------------ |
| 0 | 200 // helper for lazy exception creation |
| 201 ciInstance* ciEnv::get_or_create_exception(jobject& handle, symbolHandle name) { | |
| 202 VM_ENTRY_MARK; | |
| 203 if (handle == NULL) { | |
| 204 // Cf. universe.cpp, creation of Universe::_null_ptr_exception_instance. | |
| 205 klassOop k = SystemDictionary::find(name, Handle(), Handle(), THREAD); | |
| 206 jobject objh = NULL; | |
| 207 if (!HAS_PENDING_EXCEPTION && k != NULL) { | |
| 208 oop obj = instanceKlass::cast(k)->allocate_permanent_instance(THREAD); | |
| 209 if (!HAS_PENDING_EXCEPTION) | |
| 210 objh = JNIHandles::make_global(obj); | |
| 211 } | |
| 212 if (HAS_PENDING_EXCEPTION) { | |
| 213 CLEAR_PENDING_EXCEPTION; | |
| 214 } else { | |
| 215 handle = objh; | |
| 216 } | |
| 217 } | |
| 218 oop obj = JNIHandles::resolve(handle); | |
| 219 return obj == NULL? NULL: get_object(obj)->as_instance(); | |
| 220 } | |
| 221 | |
| 222 // ------------------------------------------------------------------ | |
| 223 // ciEnv::ArrayIndexOutOfBoundsException_instance, etc. | |
| 224 ciInstance* ciEnv::ArrayIndexOutOfBoundsException_instance() { | |
| 225 if (_ArrayIndexOutOfBoundsException_instance == NULL) { | |
| 226 _ArrayIndexOutOfBoundsException_instance | |
| 227 = get_or_create_exception(_ArrayIndexOutOfBoundsException_handle, | |
| 228 vmSymbolHandles::java_lang_ArrayIndexOutOfBoundsException()); | |
| 229 } | |
| 230 return _ArrayIndexOutOfBoundsException_instance; | |
| 231 } | |
| 232 ciInstance* ciEnv::ArrayStoreException_instance() { | |
| 233 if (_ArrayStoreException_instance == NULL) { | |
| 234 _ArrayStoreException_instance | |
| 235 = get_or_create_exception(_ArrayStoreException_handle, | |
| 236 vmSymbolHandles::java_lang_ArrayStoreException()); | |
| 237 } | |
| 238 return _ArrayStoreException_instance; | |
| 239 } | |
| 240 ciInstance* ciEnv::ClassCastException_instance() { | |
| 241 if (_ClassCastException_instance == NULL) { | |
| 242 _ClassCastException_instance | |
| 243 = get_or_create_exception(_ClassCastException_handle, | |
| 244 vmSymbolHandles::java_lang_ClassCastException()); | |
| 245 } | |
| 246 return _ClassCastException_instance; | |
| 247 } | |
| 248 | |
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249 ciInstance* ciEnv::the_null_string() { |
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250 if (_the_null_string == NULL) { |
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251 VM_ENTRY_MARK; |
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252 _the_null_string = get_object(Universe::the_null_string())->as_instance(); |
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253 } |
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254 return _the_null_string; |
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255 } |
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256 |
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257 ciInstance* ciEnv::the_min_jint_string() { |
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258 if (_the_min_jint_string == NULL) { |
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259 VM_ENTRY_MARK; |
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260 _the_min_jint_string = get_object(Universe::the_min_jint_string())->as_instance(); |
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261 } |
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262 return _the_min_jint_string; |
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263 } |
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264 |
| 0 | 265 // ------------------------------------------------------------------ |
| 266 // ciEnv::get_method_from_handle | |
| 267 ciMethod* ciEnv::get_method_from_handle(jobject method) { | |
| 268 VM_ENTRY_MARK; | |
| 269 return get_object(JNIHandles::resolve(method))->as_method(); | |
| 270 } | |
| 271 | |
| 272 // ------------------------------------------------------------------ | |
| 273 // ciEnv::make_array | |
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274 ciArray* ciEnv::make_system_array(GrowableArray<ciObject*>* objects) { |
| 0 | 275 VM_ENTRY_MARK; |
| 276 int length = objects->length(); | |
| 277 objArrayOop a = oopFactory::new_system_objArray(length, THREAD); | |
| 278 if (HAS_PENDING_EXCEPTION) { | |
| 279 CLEAR_PENDING_EXCEPTION; | |
| 280 record_out_of_memory_failure(); | |
| 281 return NULL; | |
| 282 } | |
| 283 for (int i = 0; i < length; i++) { | |
| 284 a->obj_at_put(i, objects->at(i)->get_oop()); | |
| 285 } | |
| 286 assert(a->is_perm(), ""); | |
| 287 return get_object(a)->as_array(); | |
| 288 } | |
| 289 | |
| 290 | |
| 291 // ------------------------------------------------------------------ | |
| 292 // ciEnv::array_element_offset_in_bytes | |
| 293 int ciEnv::array_element_offset_in_bytes(ciArray* a_h, ciObject* o_h) { | |
| 294 VM_ENTRY_MARK; | |
| 295 objArrayOop a = (objArrayOop)a_h->get_oop(); | |
| 296 assert(a->is_objArray(), ""); | |
| 297 int length = a->length(); | |
| 298 oop o = o_h->get_oop(); | |
| 299 for (int i = 0; i < length; i++) { | |
| 300 if (a->obj_at(i) == o) return i; | |
| 301 } | |
| 302 return -1; | |
| 303 } | |
| 304 | |
| 305 | |
| 306 // ------------------------------------------------------------------ | |
| 307 // ciEnv::check_klass_accessiblity | |
| 308 // | |
| 309 // Note: the logic of this method should mirror the logic of | |
| 310 // constantPoolOopDesc::verify_constant_pool_resolve. | |
| 311 bool ciEnv::check_klass_accessibility(ciKlass* accessing_klass, | |
| 312 klassOop resolved_klass) { | |
| 313 if (accessing_klass == NULL || !accessing_klass->is_loaded()) { | |
| 314 return true; | |
| 315 } | |
| 316 if (accessing_klass->is_obj_array()) { | |
| 317 accessing_klass = accessing_klass->as_obj_array_klass()->base_element_klass(); | |
| 318 } | |
| 319 if (!accessing_klass->is_instance_klass()) { | |
| 320 return true; | |
| 321 } | |
| 322 | |
| 323 if (resolved_klass->klass_part()->oop_is_objArray()) { | |
| 324 // Find the element klass, if this is an array. | |
| 325 resolved_klass = objArrayKlass::cast(resolved_klass)->bottom_klass(); | |
| 326 } | |
| 327 if (resolved_klass->klass_part()->oop_is_instance()) { | |
| 328 return Reflection::verify_class_access(accessing_klass->get_klassOop(), | |
| 329 resolved_klass, | |
| 330 true); | |
| 331 } | |
| 332 return true; | |
| 333 } | |
| 334 | |
| 335 // ------------------------------------------------------------------ | |
| 336 // ciEnv::get_klass_by_name_impl | |
| 337 ciKlass* ciEnv::get_klass_by_name_impl(ciKlass* accessing_klass, | |
| 338 ciSymbol* name, | |
| 339 bool require_local) { | |
| 340 ASSERT_IN_VM; | |
| 341 EXCEPTION_CONTEXT; | |
| 342 | |
| 343 // Now we need to check the SystemDictionary | |
| 344 symbolHandle sym(THREAD, name->get_symbolOop()); | |
| 345 if (sym->byte_at(0) == 'L' && | |
| 346 sym->byte_at(sym->utf8_length()-1) == ';') { | |
| 347 // This is a name from a signature. Strip off the trimmings. | |
| 348 sym = oopFactory::new_symbol_handle(sym->as_utf8()+1, | |
| 349 sym->utf8_length()-2, | |
| 350 KILL_COMPILE_ON_FATAL_(_unloaded_ciinstance_klass)); | |
| 351 name = get_object(sym())->as_symbol(); | |
| 352 } | |
| 353 | |
| 354 // Check for prior unloaded klass. The SystemDictionary's answers | |
| 355 // can vary over time but the compiler needs consistency. | |
| 356 ciKlass* unloaded_klass = check_get_unloaded_klass(accessing_klass, name); | |
| 357 if (unloaded_klass != NULL) { | |
| 358 if (require_local) return NULL; | |
| 359 return unloaded_klass; | |
| 360 } | |
| 361 | |
| 362 Handle loader(THREAD, (oop)NULL); | |
| 363 Handle domain(THREAD, (oop)NULL); | |
| 364 if (accessing_klass != NULL) { | |
| 365 loader = Handle(THREAD, accessing_klass->loader()); | |
| 366 domain = Handle(THREAD, accessing_klass->protection_domain()); | |
| 367 } | |
| 368 | |
| 369 // setup up the proper type to return on OOM | |
| 370 ciKlass* fail_type; | |
| 371 if (sym->byte_at(0) == '[') { | |
| 372 fail_type = _unloaded_ciobjarrayklass; | |
| 373 } else { | |
| 374 fail_type = _unloaded_ciinstance_klass; | |
| 375 } | |
| 376 klassOop found_klass; | |
| 377 if (!require_local) { | |
| 378 found_klass = | |
| 379 SystemDictionary::find_constrained_instance_or_array_klass(sym, loader, | |
| 380 KILL_COMPILE_ON_FATAL_(fail_type)); | |
| 381 } else { | |
| 382 found_klass = | |
| 383 SystemDictionary::find_instance_or_array_klass(sym, loader, domain, | |
| 384 KILL_COMPILE_ON_FATAL_(fail_type)); | |
| 385 } | |
| 386 | |
| 387 // If we fail to find an array klass, look again for its element type. | |
| 388 // The element type may be available either locally or via constraints. | |
| 389 // In either case, if we can find the element type in the system dictionary, | |
| 390 // we must build an array type around it. The CI requires array klasses | |
| 391 // to be loaded if their element klasses are loaded, except when memory | |
| 392 // is exhausted. | |
| 393 if (sym->byte_at(0) == '[' && | |
| 394 (sym->byte_at(1) == '[' || sym->byte_at(1) == 'L')) { | |
| 395 // We have an unloaded array. | |
| 396 // Build it on the fly if the element class exists. | |
| 397 symbolOop elem_sym = oopFactory::new_symbol(sym->as_utf8()+1, | |
| 398 sym->utf8_length()-1, | |
| 399 KILL_COMPILE_ON_FATAL_(fail_type)); | |
| 400 // Get element ciKlass recursively. | |
| 401 ciKlass* elem_klass = | |
| 402 get_klass_by_name_impl(accessing_klass, | |
| 403 get_object(elem_sym)->as_symbol(), | |
| 404 require_local); | |
| 405 if (elem_klass != NULL && elem_klass->is_loaded()) { | |
| 406 // Now make an array for it | |
| 407 return ciObjArrayKlass::make_impl(elem_klass); | |
| 408 } | |
| 409 } | |
| 410 | |
| 411 if (found_klass != NULL) { | |
| 412 // Found it. Build a CI handle. | |
| 413 return get_object(found_klass)->as_klass(); | |
| 414 } | |
| 415 | |
| 416 if (require_local) return NULL; | |
| 417 // Not yet loaded into the VM, or not governed by loader constraints. | |
| 418 // Make a CI representative for it. | |
| 419 return get_unloaded_klass(accessing_klass, name); | |
| 420 } | |
| 421 | |
| 422 // ------------------------------------------------------------------ | |
| 423 // ciEnv::get_klass_by_name | |
| 424 ciKlass* ciEnv::get_klass_by_name(ciKlass* accessing_klass, | |
| 425 ciSymbol* klass_name, | |
| 426 bool require_local) { | |
| 427 GUARDED_VM_ENTRY(return get_klass_by_name_impl(accessing_klass, | |
| 428 klass_name, | |
| 429 require_local);) | |
| 430 } | |
| 431 | |
| 432 // ------------------------------------------------------------------ | |
| 433 // ciEnv::get_klass_by_index_impl | |
| 434 // | |
| 435 // Implementation of get_klass_by_index. | |
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436 ciKlass* ciEnv::get_klass_by_index_impl(constantPoolHandle cpool, |
| 0 | 437 int index, |
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438 bool& is_accessible, |
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439 ciInstanceKlass* accessor) { |
| 0 | 440 EXCEPTION_CONTEXT; |
| 441 KlassHandle klass (THREAD, constantPoolOopDesc::klass_at_if_loaded(cpool, index)); | |
| 442 symbolHandle klass_name; | |
| 443 if (klass.is_null()) { | |
| 444 // The klass has not been inserted into the constant pool. | |
| 445 // Try to look it up by name. | |
| 446 { | |
| 447 // We have to lock the cpool to keep the oop from being resolved | |
| 448 // while we are accessing it. | |
| 449 ObjectLocker ol(cpool, THREAD); | |
| 450 | |
| 451 constantTag tag = cpool->tag_at(index); | |
| 452 if (tag.is_klass()) { | |
| 453 // The klass has been inserted into the constant pool | |
| 454 // very recently. | |
| 455 klass = KlassHandle(THREAD, cpool->resolved_klass_at(index)); | |
| 456 } else if (tag.is_symbol()) { | |
| 457 klass_name = symbolHandle(THREAD, cpool->symbol_at(index)); | |
| 458 } else { | |
| 459 assert(cpool->tag_at(index).is_unresolved_klass(), "wrong tag"); | |
| 460 klass_name = symbolHandle(THREAD, cpool->unresolved_klass_at(index)); | |
| 461 } | |
| 462 } | |
| 463 } | |
| 464 | |
| 465 if (klass.is_null()) { | |
| 466 // Not found in constant pool. Use the name to do the lookup. | |
| 467 ciKlass* k = get_klass_by_name_impl(accessor, | |
| 468 get_object(klass_name())->as_symbol(), | |
| 469 false); | |
| 470 // Calculate accessibility the hard way. | |
| 471 if (!k->is_loaded()) { | |
| 472 is_accessible = false; | |
| 473 } else if (k->loader() != accessor->loader() && | |
| 474 get_klass_by_name_impl(accessor, k->name(), true) == NULL) { | |
| 475 // Loaded only remotely. Not linked yet. | |
| 476 is_accessible = false; | |
| 477 } else { | |
| 478 // Linked locally, and we must also check public/private, etc. | |
| 479 is_accessible = check_klass_accessibility(accessor, k->get_klassOop()); | |
| 480 } | |
| 481 return k; | |
| 482 } | |
| 483 | |
| 484 // Check for prior unloaded klass. The SystemDictionary's answers | |
| 485 // can vary over time but the compiler needs consistency. | |
| 486 ciSymbol* name = get_object(klass()->klass_part()->name())->as_symbol(); | |
| 487 ciKlass* unloaded_klass = check_get_unloaded_klass(accessor, name); | |
| 488 if (unloaded_klass != NULL) { | |
| 489 is_accessible = false; | |
| 490 return unloaded_klass; | |
| 491 } | |
| 492 | |
| 493 // It is known to be accessible, since it was found in the constant pool. | |
| 494 is_accessible = true; | |
| 495 return get_object(klass())->as_klass(); | |
| 496 } | |
| 497 | |
| 498 // ------------------------------------------------------------------ | |
| 499 // ciEnv::get_klass_by_index | |
| 500 // | |
| 501 // Get a klass from the constant pool. | |
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502 ciKlass* ciEnv::get_klass_by_index(constantPoolHandle cpool, |
| 0 | 503 int index, |
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504 bool& is_accessible, |
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505 ciInstanceKlass* accessor) { |
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506 GUARDED_VM_ENTRY(return get_klass_by_index_impl(cpool, index, is_accessible, accessor);) |
| 0 | 507 } |
| 508 | |
| 509 // ------------------------------------------------------------------ | |
| 510 // ciEnv::get_constant_by_index_impl | |
| 511 // | |
| 512 // Implementation of get_constant_by_index(). | |
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513 ciConstant ciEnv::get_constant_by_index_impl(constantPoolHandle cpool, |
| 1602 | 514 int pool_index, int cache_index, |
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515 ciInstanceKlass* accessor) { |
| 1602 | 516 bool ignore_will_link; |
| 0 | 517 EXCEPTION_CONTEXT; |
| 1602 | 518 int index = pool_index; |
| 519 if (cache_index >= 0) { | |
| 520 assert(index < 0, "only one kind of index at a time"); | |
| 521 ConstantPoolCacheEntry* cpc_entry = cpool->cache()->entry_at(cache_index); | |
| 522 index = cpc_entry->constant_pool_index(); | |
| 523 oop obj = cpc_entry->f1(); | |
| 524 if (obj != NULL) { | |
| 525 assert(obj->is_instance(), "must be an instance"); | |
| 526 ciObject* ciobj = get_object(obj); | |
| 527 return ciConstant(T_OBJECT, ciobj); | |
| 528 } | |
| 529 } | |
| 0 | 530 constantTag tag = cpool->tag_at(index); |
| 531 if (tag.is_int()) { | |
| 532 return ciConstant(T_INT, (jint)cpool->int_at(index)); | |
| 533 } else if (tag.is_long()) { | |
| 534 return ciConstant((jlong)cpool->long_at(index)); | |
| 535 } else if (tag.is_float()) { | |
| 536 return ciConstant((jfloat)cpool->float_at(index)); | |
| 537 } else if (tag.is_double()) { | |
| 538 return ciConstant((jdouble)cpool->double_at(index)); | |
| 539 } else if (tag.is_string() || tag.is_unresolved_string()) { | |
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540 oop string = NULL; |
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541 if (cpool->is_pseudo_string_at(index)) { |
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542 string = cpool->pseudo_string_at(index); |
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543 } else { |
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544 string = cpool->string_at(index, THREAD); |
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545 if (HAS_PENDING_EXCEPTION) { |
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546 CLEAR_PENDING_EXCEPTION; |
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547 record_out_of_memory_failure(); |
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548 return ciConstant(); |
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549 } |
| 0 | 550 } |
| 551 ciObject* constant = get_object(string); | |
| 552 assert (constant->is_instance(), "must be an instance, or not? "); | |
| 553 return ciConstant(T_OBJECT, constant); | |
| 554 } else if (tag.is_klass() || tag.is_unresolved_klass()) { | |
| 555 // 4881222: allow ldc to take a class type | |
| 1602 | 556 ciKlass* klass = get_klass_by_index_impl(cpool, index, ignore_will_link, accessor); |
| 0 | 557 if (HAS_PENDING_EXCEPTION) { |
| 558 CLEAR_PENDING_EXCEPTION; | |
| 559 record_out_of_memory_failure(); | |
| 560 return ciConstant(); | |
| 561 } | |
| 562 assert (klass->is_instance_klass() || klass->is_array_klass(), | |
| 563 "must be an instance or array klass "); | |
| 1602 | 564 return ciConstant(T_OBJECT, klass->java_mirror()); |
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565 } else if (tag.is_object()) { |
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566 oop obj = cpool->object_at(index); |
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567 assert(obj->is_instance(), "must be an instance"); |
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568 ciObject* ciobj = get_object(obj); |
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569 return ciConstant(T_OBJECT, ciobj); |
| 1602 | 570 } else if (tag.is_method_type()) { |
| 571 // must execute Java code to link this CP entry into cache[i].f1 | |
| 572 ciSymbol* signature = get_object(cpool->method_type_signature_at(index))->as_symbol(); | |
| 573 ciObject* ciobj = get_unloaded_method_type_constant(signature); | |
| 574 return ciConstant(T_OBJECT, ciobj); | |
| 575 } else if (tag.is_method_handle()) { | |
| 576 // must execute Java code to link this CP entry into cache[i].f1 | |
| 577 int ref_kind = cpool->method_handle_ref_kind_at(index); | |
| 578 int callee_index = cpool->method_handle_klass_index_at(index); | |
| 579 ciKlass* callee = get_klass_by_index_impl(cpool, callee_index, ignore_will_link, accessor); | |
| 580 ciSymbol* name = get_object(cpool->method_handle_name_ref_at(index))->as_symbol(); | |
| 581 ciSymbol* signature = get_object(cpool->method_handle_signature_ref_at(index))->as_symbol(); | |
| 582 ciObject* ciobj = get_unloaded_method_handle_constant(callee, name, signature, ref_kind); | |
| 583 return ciConstant(T_OBJECT, ciobj); | |
| 0 | 584 } else { |
| 585 ShouldNotReachHere(); | |
| 586 return ciConstant(); | |
| 587 } | |
| 588 } | |
| 589 | |
| 590 // ------------------------------------------------------------------ | |
| 591 // ciEnv::get_constant_by_index | |
| 592 // | |
| 593 // Pull a constant out of the constant pool. How appropriate. | |
| 594 // | |
| 595 // Implementation note: this query is currently in no way cached. | |
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596 ciConstant ciEnv::get_constant_by_index(constantPoolHandle cpool, |
| 1602 | 597 int pool_index, int cache_index, |
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598 ciInstanceKlass* accessor) { |
| 1602 | 599 GUARDED_VM_ENTRY(return get_constant_by_index_impl(cpool, pool_index, cache_index, accessor);) |
| 0 | 600 } |
| 601 | |
| 602 // ------------------------------------------------------------------ | |
| 603 // ciEnv::get_field_by_index_impl | |
| 604 // | |
| 605 // Implementation of get_field_by_index. | |
| 606 // | |
| 607 // Implementation note: the results of field lookups are cached | |
| 608 // in the accessor klass. | |
| 609 ciField* ciEnv::get_field_by_index_impl(ciInstanceKlass* accessor, | |
| 610 int index) { | |
| 611 ciConstantPoolCache* cache = accessor->field_cache(); | |
| 612 if (cache == NULL) { | |
| 613 ciField* field = new (arena()) ciField(accessor, index); | |
| 614 return field; | |
| 615 } else { | |
| 616 ciField* field = (ciField*)cache->get(index); | |
| 617 if (field == NULL) { | |
| 618 field = new (arena()) ciField(accessor, index); | |
| 619 cache->insert(index, field); | |
| 620 } | |
| 621 return field; | |
| 622 } | |
| 623 } | |
| 624 | |
| 625 // ------------------------------------------------------------------ | |
| 626 // ciEnv::get_field_by_index | |
| 627 // | |
| 628 // Get a field by index from a klass's constant pool. | |
| 629 ciField* ciEnv::get_field_by_index(ciInstanceKlass* accessor, | |
| 630 int index) { | |
| 631 GUARDED_VM_ENTRY(return get_field_by_index_impl(accessor, index);) | |
| 632 } | |
| 633 | |
| 634 // ------------------------------------------------------------------ | |
| 635 // ciEnv::lookup_method | |
| 636 // | |
| 637 // Perform an appropriate method lookup based on accessor, holder, | |
| 638 // name, signature, and bytecode. | |
| 639 methodOop ciEnv::lookup_method(instanceKlass* accessor, | |
| 640 instanceKlass* holder, | |
| 641 symbolOop name, | |
| 642 symbolOop sig, | |
| 643 Bytecodes::Code bc) { | |
| 644 EXCEPTION_CONTEXT; | |
| 645 KlassHandle h_accessor(THREAD, accessor); | |
| 646 KlassHandle h_holder(THREAD, holder); | |
| 647 symbolHandle h_name(THREAD, name); | |
| 648 symbolHandle h_sig(THREAD, sig); | |
| 649 LinkResolver::check_klass_accessability(h_accessor, h_holder, KILL_COMPILE_ON_FATAL_(NULL)); | |
| 650 methodHandle dest_method; | |
| 651 switch (bc) { | |
| 652 case Bytecodes::_invokestatic: | |
| 653 dest_method = | |
| 654 LinkResolver::resolve_static_call_or_null(h_holder, h_name, h_sig, h_accessor); | |
| 655 break; | |
| 656 case Bytecodes::_invokespecial: | |
| 657 dest_method = | |
| 658 LinkResolver::resolve_special_call_or_null(h_holder, h_name, h_sig, h_accessor); | |
| 659 break; | |
| 660 case Bytecodes::_invokeinterface: | |
| 661 dest_method = | |
| 662 LinkResolver::linktime_resolve_interface_method_or_null(h_holder, h_name, h_sig, | |
| 663 h_accessor, true); | |
| 664 break; | |
| 665 case Bytecodes::_invokevirtual: | |
| 666 dest_method = | |
| 667 LinkResolver::linktime_resolve_virtual_method_or_null(h_holder, h_name, h_sig, | |
| 668 h_accessor, true); | |
| 669 break; | |
| 670 default: ShouldNotReachHere(); | |
| 671 } | |
| 672 | |
| 673 return dest_method(); | |
| 674 } | |
| 675 | |
| 676 | |
| 677 // ------------------------------------------------------------------ | |
| 678 // ciEnv::get_method_by_index_impl | |
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679 ciMethod* ciEnv::get_method_by_index_impl(constantPoolHandle cpool, |
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680 int index, Bytecodes::Code bc, |
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681 ciInstanceKlass* accessor) { |
| 0 | 682 int holder_index = cpool->klass_ref_index_at(index); |
| 683 bool holder_is_accessible; | |
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684 ciKlass* holder = get_klass_by_index_impl(cpool, holder_index, holder_is_accessible, accessor); |
| 0 | 685 ciInstanceKlass* declared_holder = get_instance_klass_for_declared_method_holder(holder); |
| 686 | |
| 687 // Get the method's name and signature. | |
| 688 symbolOop name_sym = cpool->name_ref_at(index); | |
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689 symbolOop sig_sym = cpool->signature_ref_at(index); |
| 0 | 690 |
| 691 if (holder_is_accessible) { // Our declared holder is loaded. | |
| 692 instanceKlass* lookup = declared_holder->get_instanceKlass(); | |
| 693 methodOop m = lookup_method(accessor->get_instanceKlass(), lookup, name_sym, sig_sym, bc); | |
| 694 if (m != NULL) { | |
| 695 // We found the method. | |
| 696 return get_object(m)->as_method(); | |
| 697 } | |
| 698 } | |
| 699 | |
| 700 // Either the declared holder was not loaded, or the method could | |
| 701 // not be found. Create a dummy ciMethod to represent the failed | |
| 702 // lookup. | |
| 703 | |
| 704 return get_unloaded_method(declared_holder, | |
| 705 get_object(name_sym)->as_symbol(), | |
| 706 get_object(sig_sym)->as_symbol()); | |
| 707 } | |
| 708 | |
| 709 | |
| 710 // ------------------------------------------------------------------ | |
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711 // ciEnv::get_fake_invokedynamic_method_impl |
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712 ciMethod* ciEnv::get_fake_invokedynamic_method_impl(constantPoolHandle cpool, |
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713 int index, Bytecodes::Code bc) { |
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714 // Compare the following logic with InterpreterRuntime::resolve_invokedynamic. |
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715 assert(bc == Bytecodes::_invokedynamic, "must be invokedynamic"); |
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716 |
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717 bool is_resolved = cpool->cache()->main_entry_at(index)->is_resolved(bc); |
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718 if (is_resolved && (oop) cpool->cache()->secondary_entry_at(index)->f1() == NULL) |
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719 // FIXME: code generation could allow for null (unlinked) call site |
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720 is_resolved = false; |
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721 |
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722 // Call site might not be resolved yet. We could create a real invoker method from the |
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723 // compiler, but it is simpler to stop the code path here with an unlinked method. |
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724 if (!is_resolved) { |
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725 ciInstanceKlass* mh_klass = get_object(SystemDictionary::MethodHandle_klass())->as_instance_klass(); |
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726 ciSymbol* sig_sym = get_object(cpool->signature_ref_at(index))->as_symbol(); |
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727 return get_unloaded_method(mh_klass, ciSymbol::invokeExact_name(), sig_sym); |
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728 } |
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729 |
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730 // Get the invoker methodOop from the constant pool. |
|
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731 oop f1_value = cpool->cache()->main_entry_at(index)->f1(); |
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732 methodOop signature_invoker = methodOop(f1_value); |
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733 assert(signature_invoker != NULL && signature_invoker->is_method() && signature_invoker->is_method_handle_invoke(), |
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734 "correct result from LinkResolver::resolve_invokedynamic"); |
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735 |
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736 return get_object(signature_invoker)->as_method(); |
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737 } |
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738 |
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739 |
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740 // ------------------------------------------------------------------ |
| 0 | 741 // ciEnv::get_instance_klass_for_declared_method_holder |
| 742 ciInstanceKlass* ciEnv::get_instance_klass_for_declared_method_holder(ciKlass* method_holder) { | |
| 743 // For the case of <array>.clone(), the method holder can be a ciArrayKlass | |
| 744 // instead of a ciInstanceKlass. For that case simply pretend that the | |
| 745 // declared holder is Object.clone since that's where the call will bottom out. | |
| 746 // A more correct fix would trickle out through many interfaces in CI, | |
| 747 // requiring ciInstanceKlass* to become ciKlass* and many more places would | |
| 748 // require checks to make sure the expected type was found. Given that this | |
| 749 // only occurs for clone() the more extensive fix seems like overkill so | |
| 750 // instead we simply smear the array type into Object. | |
| 751 if (method_holder->is_instance_klass()) { | |
| 752 return method_holder->as_instance_klass(); | |
| 753 } else if (method_holder->is_array_klass()) { | |
| 754 return current()->Object_klass(); | |
| 755 } else { | |
| 756 ShouldNotReachHere(); | |
| 757 } | |
| 758 return NULL; | |
| 759 } | |
| 760 | |
| 761 | |
| 762 // ------------------------------------------------------------------ | |
| 763 // ciEnv::get_method_by_index | |
|
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764 ciMethod* ciEnv::get_method_by_index(constantPoolHandle cpool, |
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765 int index, Bytecodes::Code bc, |
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766 ciInstanceKlass* accessor) { |
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767 if (bc == Bytecodes::_invokedynamic) { |
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768 GUARDED_VM_ENTRY(return get_fake_invokedynamic_method_impl(cpool, index, bc);) |
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769 } else { |
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770 GUARDED_VM_ENTRY(return get_method_by_index_impl(cpool, index, bc, accessor);) |
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771 } |
| 0 | 772 } |
| 773 | |
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774 |
| 0 | 775 // ------------------------------------------------------------------ |
| 776 // ciEnv::name_buffer | |
| 777 char *ciEnv::name_buffer(int req_len) { | |
| 778 if (_name_buffer_len < req_len) { | |
| 779 if (_name_buffer == NULL) { | |
| 780 _name_buffer = (char*)arena()->Amalloc(sizeof(char)*req_len); | |
| 781 _name_buffer_len = req_len; | |
| 782 } else { | |
| 783 _name_buffer = | |
| 784 (char*)arena()->Arealloc(_name_buffer, _name_buffer_len, req_len); | |
| 785 _name_buffer_len = req_len; | |
| 786 } | |
| 787 } | |
| 788 return _name_buffer; | |
| 789 } | |
| 790 | |
| 791 // ------------------------------------------------------------------ | |
| 792 // ciEnv::is_in_vm | |
| 793 bool ciEnv::is_in_vm() { | |
| 794 return JavaThread::current()->thread_state() == _thread_in_vm; | |
| 795 } | |
| 796 | |
| 797 bool ciEnv::system_dictionary_modification_counter_changed() { | |
| 798 return _system_dictionary_modification_counter != SystemDictionary::number_of_modifications(); | |
| 799 } | |
| 800 | |
| 801 // ------------------------------------------------------------------ | |
| 802 // ciEnv::check_for_system_dictionary_modification | |
| 803 // Check for changes to the system dictionary during compilation | |
| 804 // class loads, evolution, breakpoints | |
| 805 void ciEnv::check_for_system_dictionary_modification(ciMethod* target) { | |
| 806 if (failing()) return; // no need for further checks | |
| 807 | |
| 808 // Dependencies must be checked when the system dictionary changes. | |
| 809 // If logging is enabled all violated dependences will be recorded in | |
| 810 // the log. In debug mode check dependencies even if the system | |
| 811 // dictionary hasn't changed to verify that no invalid dependencies | |
| 812 // were inserted. Any violated dependences in this case are dumped to | |
| 813 // the tty. | |
| 814 | |
| 815 bool counter_changed = system_dictionary_modification_counter_changed(); | |
| 816 bool test_deps = counter_changed; | |
| 817 DEBUG_ONLY(test_deps = true); | |
| 818 if (!test_deps) return; | |
| 819 | |
| 820 bool print_failures = false; | |
| 821 DEBUG_ONLY(print_failures = !counter_changed); | |
| 822 | |
| 823 bool keep_going = (print_failures || xtty != NULL); | |
| 824 | |
| 825 int violated = 0; | |
| 826 | |
| 827 for (Dependencies::DepStream deps(dependencies()); deps.next(); ) { | |
| 828 klassOop witness = deps.check_dependency(); | |
| 829 if (witness != NULL) { | |
| 830 ++violated; | |
| 831 if (print_failures) deps.print_dependency(witness, /*verbose=*/ true); | |
| 832 // If there's no log and we're not sanity-checking, we're done. | |
| 833 if (!keep_going) break; | |
| 834 } | |
| 835 } | |
| 836 | |
| 837 if (violated != 0) { | |
| 838 assert(counter_changed, "failed dependencies, but counter didn't change"); | |
| 839 record_failure("concurrent class loading"); | |
| 840 } | |
| 841 } | |
| 842 | |
| 843 // ------------------------------------------------------------------ | |
| 844 // ciEnv::register_method | |
| 845 void ciEnv::register_method(ciMethod* target, | |
| 846 int entry_bci, | |
| 847 CodeOffsets* offsets, | |
| 848 int orig_pc_offset, | |
| 849 CodeBuffer* code_buffer, | |
| 850 int frame_words, | |
| 851 OopMapSet* oop_map_set, | |
| 852 ExceptionHandlerTable* handler_table, | |
| 853 ImplicitExceptionTable* inc_table, | |
| 854 AbstractCompiler* compiler, | |
| 855 int comp_level, | |
| 856 bool has_debug_info, | |
| 857 bool has_unsafe_access) { | |
| 858 VM_ENTRY_MARK; | |
| 859 nmethod* nm = NULL; | |
| 860 { | |
| 861 // To prevent compile queue updates. | |
| 862 MutexLocker locker(MethodCompileQueue_lock, THREAD); | |
| 863 | |
| 864 // Prevent SystemDictionary::add_to_hierarchy from running | |
| 865 // and invalidating our dependencies until we install this method. | |
| 866 MutexLocker ml(Compile_lock); | |
| 867 | |
|
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868 // Change in Jvmti state may invalidate compilation. |
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869 if (!failing() && |
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870 ( (!jvmti_can_hotswap_or_post_breakpoint() && |
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871 JvmtiExport::can_hotswap_or_post_breakpoint()) || |
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872 (!jvmti_can_access_local_variables() && |
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873 JvmtiExport::can_access_local_variables()) || |
|
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874 (!jvmti_can_post_on_exceptions() && |
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875 JvmtiExport::can_post_on_exceptions()) )) { |
|
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876 record_failure("Jvmti state change invalidated dependencies"); |
| 0 | 877 } |
| 878 | |
|
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879 // Change in DTrace flags may invalidate compilation. |
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880 if (!failing() && |
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881 ( (!dtrace_extended_probes() && ExtendedDTraceProbes) || |
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882 (!dtrace_method_probes() && DTraceMethodProbes) || |
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883 (!dtrace_alloc_probes() && DTraceAllocProbes) )) { |
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884 record_failure("DTrace flags change invalidated dependencies"); |
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885 } |
| 0 | 886 |
|
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887 if (!failing()) { |
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888 if (log() != NULL) { |
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889 // Log the dependencies which this compilation declares. |
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890 dependencies()->log_all_dependencies(); |
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891 } |
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892 |
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893 // Encode the dependencies now, so we can check them right away. |
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894 dependencies()->encode_content_bytes(); |
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895 |
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896 // Check for {class loads, evolution, breakpoints} during compilation |
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897 check_for_system_dictionary_modification(target); |
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898 } |
| 0 | 899 |
| 900 methodHandle method(THREAD, target->get_methodOop()); | |
| 901 | |
| 902 if (failing()) { | |
| 903 // While not a true deoptimization, it is a preemptive decompile. | |
| 904 methodDataOop mdo = method()->method_data(); | |
| 905 if (mdo != NULL) { | |
| 906 mdo->inc_decompile_count(); | |
| 907 } | |
| 908 | |
| 909 // All buffers in the CodeBuffer are allocated in the CodeCache. | |
| 910 // If the code buffer is created on each compile attempt | |
| 911 // as in C2, then it must be freed. | |
| 912 code_buffer->free_blob(); | |
| 913 return; | |
| 914 } | |
| 915 | |
| 916 assert(offsets->value(CodeOffsets::Deopt) != -1, "must have deopt entry"); | |
| 917 assert(offsets->value(CodeOffsets::Exceptions) != -1, "must have exception entry"); | |
| 918 | |
| 919 nm = nmethod::new_nmethod(method, | |
| 920 compile_id(), | |
| 921 entry_bci, | |
| 922 offsets, | |
| 923 orig_pc_offset, | |
| 924 debug_info(), dependencies(), code_buffer, | |
| 925 frame_words, oop_map_set, | |
| 926 handler_table, inc_table, | |
| 927 compiler, comp_level); | |
| 928 | |
| 929 // Free codeBlobs | |
| 930 code_buffer->free_blob(); | |
| 931 | |
| 932 // stress test 6243940 by immediately making the method | |
| 933 // non-entrant behind the system's back. This has serious | |
| 934 // side effects on the code cache and is not meant for | |
| 935 // general stress testing | |
| 936 if (nm != NULL && StressNonEntrant) { | |
| 937 MutexLockerEx pl(Patching_lock, Mutex::_no_safepoint_check_flag); | |
| 938 NativeJump::patch_verified_entry(nm->entry_point(), nm->verified_entry_point(), | |
| 939 SharedRuntime::get_handle_wrong_method_stub()); | |
| 940 } | |
| 941 | |
| 942 if (nm == NULL) { | |
| 943 // The CodeCache is full. Print out warning and disable compilation. | |
| 944 record_failure("code cache is full"); | |
| 1202 | 945 { |
| 946 MutexUnlocker ml(Compile_lock); | |
| 947 MutexUnlocker locker(MethodCompileQueue_lock); | |
| 948 CompileBroker::handle_full_code_cache(); | |
| 0 | 949 } |
| 950 } else { | |
| 951 NOT_PRODUCT(nm->set_has_debug_info(has_debug_info); ) | |
| 952 nm->set_has_unsafe_access(has_unsafe_access); | |
| 953 | |
| 954 // Record successful registration. | |
| 955 // (Put nm into the task handle *before* publishing to the Java heap.) | |
| 956 if (task() != NULL) task()->set_code(nm); | |
| 957 | |
| 958 if (entry_bci == InvocationEntryBci) { | |
| 959 #ifdef TIERED | |
| 960 // If there is an old version we're done with it | |
| 961 nmethod* old = method->code(); | |
| 962 if (TraceMethodReplacement && old != NULL) { | |
| 963 ResourceMark rm; | |
| 964 char *method_name = method->name_and_sig_as_C_string(); | |
| 965 tty->print_cr("Replacing method %s", method_name); | |
| 966 } | |
| 967 if (old != NULL ) { | |
| 968 old->make_not_entrant(); | |
| 969 } | |
| 970 #endif // TIERED | |
| 971 if (TraceNMethodInstalls ) { | |
| 972 ResourceMark rm; | |
| 973 char *method_name = method->name_and_sig_as_C_string(); | |
| 974 ttyLocker ttyl; | |
| 975 tty->print_cr("Installing method (%d) %s ", | |
| 976 comp_level, | |
| 977 method_name); | |
| 978 } | |
| 979 // Allow the code to be executed | |
| 980 method->set_code(method, nm); | |
| 981 } else { | |
| 982 if (TraceNMethodInstalls ) { | |
| 983 ResourceMark rm; | |
| 984 char *method_name = method->name_and_sig_as_C_string(); | |
| 985 ttyLocker ttyl; | |
| 986 tty->print_cr("Installing osr method (%d) %s @ %d", | |
| 987 comp_level, | |
| 988 method_name, | |
| 989 entry_bci); | |
| 990 } | |
| 991 instanceKlass::cast(method->method_holder())->add_osr_nmethod(nm); | |
| 992 | |
| 993 } | |
| 994 } | |
| 995 } | |
| 996 // JVMTI -- compiled method notification (must be done outside lock) | |
| 997 if (nm != NULL) { | |
| 998 nm->post_compiled_method_load_event(); | |
| 999 } | |
| 1000 | |
| 1001 } | |
| 1002 | |
| 1003 | |
| 1004 // ------------------------------------------------------------------ | |
| 1005 // ciEnv::find_system_klass | |
| 1006 ciKlass* ciEnv::find_system_klass(ciSymbol* klass_name) { | |
| 1007 VM_ENTRY_MARK; | |
| 1008 return get_klass_by_name_impl(NULL, klass_name, false); | |
| 1009 } | |
| 1010 | |
| 1011 // ------------------------------------------------------------------ | |
| 1012 // ciEnv::comp_level | |
| 1013 int ciEnv::comp_level() { | |
| 1014 if (task() == NULL) return CompLevel_full_optimization; | |
| 1015 return task()->comp_level(); | |
| 1016 } | |
| 1017 | |
| 1018 // ------------------------------------------------------------------ | |
| 1019 // ciEnv::compile_id | |
| 1020 uint ciEnv::compile_id() { | |
| 1021 if (task() == NULL) return 0; | |
| 1022 return task()->compile_id(); | |
| 1023 } | |
| 1024 | |
| 1025 // ------------------------------------------------------------------ | |
| 1026 // ciEnv::notice_inlined_method() | |
| 1027 void ciEnv::notice_inlined_method(ciMethod* method) { | |
| 1028 _num_inlined_bytecodes += method->code_size(); | |
| 1029 } | |
| 1030 | |
| 1031 // ------------------------------------------------------------------ | |
| 1032 // ciEnv::num_inlined_bytecodes() | |
| 1033 int ciEnv::num_inlined_bytecodes() const { | |
| 1034 return _num_inlined_bytecodes; | |
| 1035 } | |
| 1036 | |
| 1037 // ------------------------------------------------------------------ | |
| 1038 // ciEnv::record_failure() | |
| 1039 void ciEnv::record_failure(const char* reason) { | |
| 1040 if (log() != NULL) { | |
| 1041 log()->elem("failure reason='%s'", reason); | |
| 1042 } | |
| 1043 if (_failure_reason == NULL) { | |
| 1044 // Record the first failure reason. | |
| 1045 _failure_reason = reason; | |
| 1046 } | |
| 1047 } | |
| 1048 | |
| 1049 // ------------------------------------------------------------------ | |
| 1050 // ciEnv::record_method_not_compilable() | |
| 1051 void ciEnv::record_method_not_compilable(const char* reason, bool all_tiers) { | |
| 1052 int new_compilable = | |
| 1053 all_tiers ? MethodCompilable_never : MethodCompilable_not_at_tier ; | |
| 1054 | |
| 1055 // Only note transitions to a worse state | |
| 1056 if (new_compilable > _compilable) { | |
| 1057 if (log() != NULL) { | |
| 1058 if (all_tiers) { | |
| 1059 log()->elem("method_not_compilable"); | |
| 1060 } else { | |
| 1061 log()->elem("method_not_compilable_at_tier"); | |
| 1062 } | |
| 1063 } | |
| 1064 _compilable = new_compilable; | |
| 1065 | |
| 1066 // Reset failure reason; this one is more important. | |
| 1067 _failure_reason = NULL; | |
| 1068 record_failure(reason); | |
| 1069 } | |
| 1070 } | |
| 1071 | |
| 1072 // ------------------------------------------------------------------ | |
| 1073 // ciEnv::record_out_of_memory_failure() | |
| 1074 void ciEnv::record_out_of_memory_failure() { | |
| 1075 // If memory is low, we stop compiling methods. | |
| 1076 record_method_not_compilable("out of memory"); | |
| 1077 } |