Mercurial > hg > truffle
annotate src/share/vm/ci/ciEnv.cpp @ 1138:dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
Summary: C2 needs some additional optimizations to be able to handle MethodHandle invokes and invokedynamic instructions at the best performance.
Reviewed-by: kvn, never
| author | twisti |
|---|---|
| date | Tue, 05 Jan 2010 15:21:25 +0100 |
| parents | 97125851f396 |
| children | 4ce7240d622c |
| 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; | |
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44 ciInstanceKlass* ciEnv::_InvokeDynamic; |
| 0 | 45 ciInstanceKlass* ciEnv::_Object; |
| 46 ciInstanceKlass* ciEnv::_Throwable; | |
| 47 ciInstanceKlass* ciEnv::_Thread; | |
| 48 ciInstanceKlass* ciEnv::_OutOfMemoryError; | |
| 49 ciInstanceKlass* ciEnv::_String; | |
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50 ciInstanceKlass* ciEnv::_StringBuffer; |
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51 ciInstanceKlass* ciEnv::_StringBuilder; |
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52 ciInstanceKlass* ciEnv::_Integer; |
| 0 | 53 |
| 54 ciSymbol* ciEnv::_unloaded_cisymbol = NULL; | |
| 55 ciInstanceKlass* ciEnv::_unloaded_ciinstance_klass = NULL; | |
| 56 ciObjArrayKlass* ciEnv::_unloaded_ciobjarrayklass = NULL; | |
| 57 | |
| 58 jobject ciEnv::_ArrayIndexOutOfBoundsException_handle = NULL; | |
| 59 jobject ciEnv::_ArrayStoreException_handle = NULL; | |
| 60 jobject ciEnv::_ClassCastException_handle = NULL; | |
| 61 | |
| 62 #ifndef PRODUCT | |
| 63 static bool firstEnv = true; | |
| 64 #endif /* PRODUCT */ | |
| 65 | |
| 66 // ------------------------------------------------------------------ | |
| 67 // ciEnv::ciEnv | |
| 68 ciEnv::ciEnv(CompileTask* task, int system_dictionary_modification_counter) { | |
| 69 VM_ENTRY_MARK; | |
| 70 | |
| 71 // Set up ciEnv::current immediately, for the sake of ciObjectFactory, etc. | |
| 72 thread->set_env(this); | |
| 73 assert(ciEnv::current() == this, "sanity"); | |
| 74 | |
| 75 _oop_recorder = NULL; | |
| 76 _debug_info = NULL; | |
| 77 _dependencies = NULL; | |
| 78 _failure_reason = NULL; | |
| 79 _compilable = MethodCompilable; | |
| 80 _break_at_compile = false; | |
| 81 _compiler_data = NULL; | |
| 82 #ifndef PRODUCT | |
| 83 assert(!firstEnv, "not initialized properly"); | |
| 84 #endif /* !PRODUCT */ | |
| 85 | |
| 86 _system_dictionary_modification_counter = system_dictionary_modification_counter; | |
| 87 _num_inlined_bytecodes = 0; | |
| 88 assert(task == NULL || thread->task() == task, "sanity"); | |
| 89 _task = task; | |
| 90 _log = NULL; | |
| 91 | |
| 92 // Temporary buffer for creating symbols and such. | |
| 93 _name_buffer = NULL; | |
| 94 _name_buffer_len = 0; | |
| 95 | |
| 96 _arena = &_ciEnv_arena; | |
| 97 _factory = new (_arena) ciObjectFactory(_arena, 128); | |
| 98 | |
| 99 // Preload commonly referenced system ciObjects. | |
| 100 | |
| 101 // During VM initialization, these instances have not yet been created. | |
| 102 // Assertions ensure that these instances are not accessed before | |
| 103 // their initialization. | |
| 104 | |
| 105 assert(Universe::is_fully_initialized(), "should be complete"); | |
| 106 | |
| 107 oop o = Universe::null_ptr_exception_instance(); | |
| 108 assert(o != NULL, "should have been initialized"); | |
| 109 _NullPointerException_instance = get_object(o)->as_instance(); | |
| 110 o = Universe::arithmetic_exception_instance(); | |
| 111 assert(o != NULL, "should have been initialized"); | |
| 112 _ArithmeticException_instance = get_object(o)->as_instance(); | |
| 113 | |
| 114 _ArrayIndexOutOfBoundsException_instance = NULL; | |
| 115 _ArrayStoreException_instance = NULL; | |
| 116 _ClassCastException_instance = NULL; | |
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117 _the_null_string = NULL; |
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118 _the_min_jint_string = NULL; |
| 0 | 119 } |
| 120 | |
| 121 ciEnv::ciEnv(Arena* arena) { | |
| 122 ASSERT_IN_VM; | |
| 123 | |
| 124 // Set up ciEnv::current immediately, for the sake of ciObjectFactory, etc. | |
| 125 CompilerThread* current_thread = CompilerThread::current(); | |
| 126 assert(current_thread->env() == NULL, "must be"); | |
| 127 current_thread->set_env(this); | |
| 128 assert(ciEnv::current() == this, "sanity"); | |
| 129 | |
| 130 _oop_recorder = NULL; | |
| 131 _debug_info = NULL; | |
| 132 _dependencies = NULL; | |
| 133 _failure_reason = NULL; | |
| 134 _compilable = MethodCompilable_never; | |
| 135 _break_at_compile = false; | |
| 136 _compiler_data = NULL; | |
| 137 #ifndef PRODUCT | |
| 138 assert(firstEnv, "must be first"); | |
| 139 firstEnv = false; | |
| 140 #endif /* !PRODUCT */ | |
| 141 | |
| 142 _system_dictionary_modification_counter = 0; | |
| 143 _num_inlined_bytecodes = 0; | |
| 144 _task = NULL; | |
| 145 _log = NULL; | |
| 146 | |
| 147 // Temporary buffer for creating symbols and such. | |
| 148 _name_buffer = NULL; | |
| 149 _name_buffer_len = 0; | |
| 150 | |
| 151 _arena = arena; | |
| 152 _factory = new (_arena) ciObjectFactory(_arena, 128); | |
| 153 | |
| 154 // Preload commonly referenced system ciObjects. | |
| 155 | |
| 156 // During VM initialization, these instances have not yet been created. | |
| 157 // Assertions ensure that these instances are not accessed before | |
| 158 // their initialization. | |
| 159 | |
| 160 assert(Universe::is_fully_initialized(), "must be"); | |
| 161 | |
| 162 oop o = Universe::null_ptr_exception_instance(); | |
| 163 assert(o != NULL, "should have been initialized"); | |
| 164 _NullPointerException_instance = get_object(o)->as_instance(); | |
| 165 o = Universe::arithmetic_exception_instance(); | |
| 166 assert(o != NULL, "should have been initialized"); | |
| 167 _ArithmeticException_instance = get_object(o)->as_instance(); | |
| 168 | |
| 169 _ArrayIndexOutOfBoundsException_instance = NULL; | |
| 170 _ArrayStoreException_instance = NULL; | |
| 171 _ClassCastException_instance = NULL; | |
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172 _the_null_string = NULL; |
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173 _the_min_jint_string = NULL; |
| 0 | 174 } |
| 175 | |
| 176 ciEnv::~ciEnv() { | |
| 177 CompilerThread* current_thread = CompilerThread::current(); | |
| 178 current_thread->set_env(NULL); | |
| 179 } | |
| 180 | |
| 181 // ------------------------------------------------------------------ | |
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182 // Cache Jvmti state |
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183 void ciEnv::cache_jvmti_state() { |
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184 VM_ENTRY_MARK; |
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185 // Get Jvmti capabilities under lock to get consistant values. |
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186 MutexLocker mu(JvmtiThreadState_lock); |
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187 _jvmti_can_hotswap_or_post_breakpoint = JvmtiExport::can_hotswap_or_post_breakpoint(); |
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188 _jvmti_can_examine_or_deopt_anywhere = JvmtiExport::can_examine_or_deopt_anywhere(); |
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189 _jvmti_can_access_local_variables = JvmtiExport::can_access_local_variables(); |
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190 _jvmti_can_post_exceptions = JvmtiExport::can_post_exceptions(); |
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191 } |
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192 |
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193 // ------------------------------------------------------------------ |
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194 // Cache DTrace flags |
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195 void ciEnv::cache_dtrace_flags() { |
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196 // Need lock? |
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197 _dtrace_extended_probes = ExtendedDTraceProbes; |
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198 if (_dtrace_extended_probes) { |
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199 _dtrace_monitor_probes = true; |
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200 _dtrace_method_probes = true; |
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201 _dtrace_alloc_probes = true; |
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202 } else { |
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203 _dtrace_monitor_probes = DTraceMonitorProbes; |
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204 _dtrace_method_probes = DTraceMethodProbes; |
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205 _dtrace_alloc_probes = DTraceAllocProbes; |
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206 } |
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207 } |
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208 |
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209 // ------------------------------------------------------------------ |
| 0 | 210 // helper for lazy exception creation |
| 211 ciInstance* ciEnv::get_or_create_exception(jobject& handle, symbolHandle name) { | |
| 212 VM_ENTRY_MARK; | |
| 213 if (handle == NULL) { | |
| 214 // Cf. universe.cpp, creation of Universe::_null_ptr_exception_instance. | |
| 215 klassOop k = SystemDictionary::find(name, Handle(), Handle(), THREAD); | |
| 216 jobject objh = NULL; | |
| 217 if (!HAS_PENDING_EXCEPTION && k != NULL) { | |
| 218 oop obj = instanceKlass::cast(k)->allocate_permanent_instance(THREAD); | |
| 219 if (!HAS_PENDING_EXCEPTION) | |
| 220 objh = JNIHandles::make_global(obj); | |
| 221 } | |
| 222 if (HAS_PENDING_EXCEPTION) { | |
| 223 CLEAR_PENDING_EXCEPTION; | |
| 224 } else { | |
| 225 handle = objh; | |
| 226 } | |
| 227 } | |
| 228 oop obj = JNIHandles::resolve(handle); | |
| 229 return obj == NULL? NULL: get_object(obj)->as_instance(); | |
| 230 } | |
| 231 | |
| 232 // ------------------------------------------------------------------ | |
| 233 // ciEnv::ArrayIndexOutOfBoundsException_instance, etc. | |
| 234 ciInstance* ciEnv::ArrayIndexOutOfBoundsException_instance() { | |
| 235 if (_ArrayIndexOutOfBoundsException_instance == NULL) { | |
| 236 _ArrayIndexOutOfBoundsException_instance | |
| 237 = get_or_create_exception(_ArrayIndexOutOfBoundsException_handle, | |
| 238 vmSymbolHandles::java_lang_ArrayIndexOutOfBoundsException()); | |
| 239 } | |
| 240 return _ArrayIndexOutOfBoundsException_instance; | |
| 241 } | |
| 242 ciInstance* ciEnv::ArrayStoreException_instance() { | |
| 243 if (_ArrayStoreException_instance == NULL) { | |
| 244 _ArrayStoreException_instance | |
| 245 = get_or_create_exception(_ArrayStoreException_handle, | |
| 246 vmSymbolHandles::java_lang_ArrayStoreException()); | |
| 247 } | |
| 248 return _ArrayStoreException_instance; | |
| 249 } | |
| 250 ciInstance* ciEnv::ClassCastException_instance() { | |
| 251 if (_ClassCastException_instance == NULL) { | |
| 252 _ClassCastException_instance | |
| 253 = get_or_create_exception(_ClassCastException_handle, | |
| 254 vmSymbolHandles::java_lang_ClassCastException()); | |
| 255 } | |
| 256 return _ClassCastException_instance; | |
| 257 } | |
| 258 | |
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259 ciInstance* ciEnv::the_null_string() { |
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260 if (_the_null_string == NULL) { |
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261 VM_ENTRY_MARK; |
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262 _the_null_string = get_object(Universe::the_null_string())->as_instance(); |
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263 } |
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264 return _the_null_string; |
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265 } |
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266 |
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267 ciInstance* ciEnv::the_min_jint_string() { |
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268 if (_the_min_jint_string == NULL) { |
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269 VM_ENTRY_MARK; |
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270 _the_min_jint_string = get_object(Universe::the_min_jint_string())->as_instance(); |
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271 } |
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272 return _the_min_jint_string; |
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273 } |
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274 |
| 0 | 275 // ------------------------------------------------------------------ |
| 276 // ciEnv::get_method_from_handle | |
| 277 ciMethod* ciEnv::get_method_from_handle(jobject method) { | |
| 278 VM_ENTRY_MARK; | |
| 279 return get_object(JNIHandles::resolve(method))->as_method(); | |
| 280 } | |
| 281 | |
| 282 // ------------------------------------------------------------------ | |
| 283 // ciEnv::make_array | |
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284 ciArray* ciEnv::make_system_array(GrowableArray<ciObject*>* objects) { |
| 0 | 285 VM_ENTRY_MARK; |
| 286 int length = objects->length(); | |
| 287 objArrayOop a = oopFactory::new_system_objArray(length, THREAD); | |
| 288 if (HAS_PENDING_EXCEPTION) { | |
| 289 CLEAR_PENDING_EXCEPTION; | |
| 290 record_out_of_memory_failure(); | |
| 291 return NULL; | |
| 292 } | |
| 293 for (int i = 0; i < length; i++) { | |
| 294 a->obj_at_put(i, objects->at(i)->get_oop()); | |
| 295 } | |
| 296 assert(a->is_perm(), ""); | |
| 297 return get_object(a)->as_array(); | |
| 298 } | |
| 299 | |
| 300 | |
| 301 // ------------------------------------------------------------------ | |
| 302 // ciEnv::array_element_offset_in_bytes | |
| 303 int ciEnv::array_element_offset_in_bytes(ciArray* a_h, ciObject* o_h) { | |
| 304 VM_ENTRY_MARK; | |
| 305 objArrayOop a = (objArrayOop)a_h->get_oop(); | |
| 306 assert(a->is_objArray(), ""); | |
| 307 int length = a->length(); | |
| 308 oop o = o_h->get_oop(); | |
| 309 for (int i = 0; i < length; i++) { | |
| 310 if (a->obj_at(i) == o) return i; | |
| 311 } | |
| 312 return -1; | |
| 313 } | |
| 314 | |
| 315 | |
| 316 // ------------------------------------------------------------------ | |
| 317 // ciEnv::check_klass_accessiblity | |
| 318 // | |
| 319 // Note: the logic of this method should mirror the logic of | |
| 320 // constantPoolOopDesc::verify_constant_pool_resolve. | |
| 321 bool ciEnv::check_klass_accessibility(ciKlass* accessing_klass, | |
| 322 klassOop resolved_klass) { | |
| 323 if (accessing_klass == NULL || !accessing_klass->is_loaded()) { | |
| 324 return true; | |
| 325 } | |
| 326 if (accessing_klass->is_obj_array()) { | |
| 327 accessing_klass = accessing_klass->as_obj_array_klass()->base_element_klass(); | |
| 328 } | |
| 329 if (!accessing_klass->is_instance_klass()) { | |
| 330 return true; | |
| 331 } | |
| 332 | |
| 333 if (resolved_klass->klass_part()->oop_is_objArray()) { | |
| 334 // Find the element klass, if this is an array. | |
| 335 resolved_klass = objArrayKlass::cast(resolved_klass)->bottom_klass(); | |
| 336 } | |
| 337 if (resolved_klass->klass_part()->oop_is_instance()) { | |
| 338 return Reflection::verify_class_access(accessing_klass->get_klassOop(), | |
| 339 resolved_klass, | |
| 340 true); | |
| 341 } | |
| 342 return true; | |
| 343 } | |
| 344 | |
| 345 // ------------------------------------------------------------------ | |
| 346 // ciEnv::get_klass_by_name_impl | |
| 347 ciKlass* ciEnv::get_klass_by_name_impl(ciKlass* accessing_klass, | |
| 348 ciSymbol* name, | |
| 349 bool require_local) { | |
| 350 ASSERT_IN_VM; | |
| 351 EXCEPTION_CONTEXT; | |
| 352 | |
| 353 // Now we need to check the SystemDictionary | |
| 354 symbolHandle sym(THREAD, name->get_symbolOop()); | |
| 355 if (sym->byte_at(0) == 'L' && | |
| 356 sym->byte_at(sym->utf8_length()-1) == ';') { | |
| 357 // This is a name from a signature. Strip off the trimmings. | |
| 358 sym = oopFactory::new_symbol_handle(sym->as_utf8()+1, | |
| 359 sym->utf8_length()-2, | |
| 360 KILL_COMPILE_ON_FATAL_(_unloaded_ciinstance_klass)); | |
| 361 name = get_object(sym())->as_symbol(); | |
| 362 } | |
| 363 | |
| 364 // Check for prior unloaded klass. The SystemDictionary's answers | |
| 365 // can vary over time but the compiler needs consistency. | |
| 366 ciKlass* unloaded_klass = check_get_unloaded_klass(accessing_klass, name); | |
| 367 if (unloaded_klass != NULL) { | |
| 368 if (require_local) return NULL; | |
| 369 return unloaded_klass; | |
| 370 } | |
| 371 | |
| 372 Handle loader(THREAD, (oop)NULL); | |
| 373 Handle domain(THREAD, (oop)NULL); | |
| 374 if (accessing_klass != NULL) { | |
| 375 loader = Handle(THREAD, accessing_klass->loader()); | |
| 376 domain = Handle(THREAD, accessing_klass->protection_domain()); | |
| 377 } | |
| 378 | |
| 379 // setup up the proper type to return on OOM | |
| 380 ciKlass* fail_type; | |
| 381 if (sym->byte_at(0) == '[') { | |
| 382 fail_type = _unloaded_ciobjarrayklass; | |
| 383 } else { | |
| 384 fail_type = _unloaded_ciinstance_klass; | |
| 385 } | |
| 386 klassOop found_klass; | |
| 387 if (!require_local) { | |
| 388 found_klass = | |
| 389 SystemDictionary::find_constrained_instance_or_array_klass(sym, loader, | |
| 390 KILL_COMPILE_ON_FATAL_(fail_type)); | |
| 391 } else { | |
| 392 found_klass = | |
| 393 SystemDictionary::find_instance_or_array_klass(sym, loader, domain, | |
| 394 KILL_COMPILE_ON_FATAL_(fail_type)); | |
| 395 } | |
| 396 | |
| 397 if (found_klass != NULL) { | |
| 398 // Found it. Build a CI handle. | |
| 399 return get_object(found_klass)->as_klass(); | |
| 400 } | |
| 401 | |
| 402 // If we fail to find an array klass, look again for its element type. | |
| 403 // The element type may be available either locally or via constraints. | |
| 404 // In either case, if we can find the element type in the system dictionary, | |
| 405 // we must build an array type around it. The CI requires array klasses | |
| 406 // to be loaded if their element klasses are loaded, except when memory | |
| 407 // is exhausted. | |
| 408 if (sym->byte_at(0) == '[' && | |
| 409 (sym->byte_at(1) == '[' || sym->byte_at(1) == 'L')) { | |
| 410 // We have an unloaded array. | |
| 411 // Build it on the fly if the element class exists. | |
| 412 symbolOop elem_sym = oopFactory::new_symbol(sym->as_utf8()+1, | |
| 413 sym->utf8_length()-1, | |
| 414 KILL_COMPILE_ON_FATAL_(fail_type)); | |
| 415 // Get element ciKlass recursively. | |
| 416 ciKlass* elem_klass = | |
| 417 get_klass_by_name_impl(accessing_klass, | |
| 418 get_object(elem_sym)->as_symbol(), | |
| 419 require_local); | |
| 420 if (elem_klass != NULL && elem_klass->is_loaded()) { | |
| 421 // Now make an array for it | |
| 422 return ciObjArrayKlass::make_impl(elem_klass); | |
| 423 } | |
| 424 } | |
| 425 | |
| 426 if (require_local) return NULL; | |
| 427 // Not yet loaded into the VM, or not governed by loader constraints. | |
| 428 // Make a CI representative for it. | |
| 429 return get_unloaded_klass(accessing_klass, name); | |
| 430 } | |
| 431 | |
| 432 // ------------------------------------------------------------------ | |
| 433 // ciEnv::get_klass_by_name | |
| 434 ciKlass* ciEnv::get_klass_by_name(ciKlass* accessing_klass, | |
| 435 ciSymbol* klass_name, | |
| 436 bool require_local) { | |
| 437 GUARDED_VM_ENTRY(return get_klass_by_name_impl(accessing_klass, | |
| 438 klass_name, | |
| 439 require_local);) | |
| 440 } | |
| 441 | |
| 442 // ------------------------------------------------------------------ | |
| 443 // ciEnv::get_klass_by_index_impl | |
| 444 // | |
| 445 // Implementation of get_klass_by_index. | |
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446 ciKlass* ciEnv::get_klass_by_index_impl(constantPoolHandle cpool, |
| 0 | 447 int index, |
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448 bool& is_accessible, |
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449 ciInstanceKlass* accessor) { |
| 0 | 450 EXCEPTION_CONTEXT; |
| 451 KlassHandle klass (THREAD, constantPoolOopDesc::klass_at_if_loaded(cpool, index)); | |
| 452 symbolHandle klass_name; | |
| 453 if (klass.is_null()) { | |
| 454 // The klass has not been inserted into the constant pool. | |
| 455 // Try to look it up by name. | |
| 456 { | |
| 457 // We have to lock the cpool to keep the oop from being resolved | |
| 458 // while we are accessing it. | |
| 459 ObjectLocker ol(cpool, THREAD); | |
| 460 | |
| 461 constantTag tag = cpool->tag_at(index); | |
| 462 if (tag.is_klass()) { | |
| 463 // The klass has been inserted into the constant pool | |
| 464 // very recently. | |
| 465 klass = KlassHandle(THREAD, cpool->resolved_klass_at(index)); | |
| 466 } else if (tag.is_symbol()) { | |
| 467 klass_name = symbolHandle(THREAD, cpool->symbol_at(index)); | |
| 468 } else { | |
| 469 assert(cpool->tag_at(index).is_unresolved_klass(), "wrong tag"); | |
| 470 klass_name = symbolHandle(THREAD, cpool->unresolved_klass_at(index)); | |
| 471 } | |
| 472 } | |
| 473 } | |
| 474 | |
| 475 if (klass.is_null()) { | |
| 476 // Not found in constant pool. Use the name to do the lookup. | |
| 477 ciKlass* k = get_klass_by_name_impl(accessor, | |
| 478 get_object(klass_name())->as_symbol(), | |
| 479 false); | |
| 480 // Calculate accessibility the hard way. | |
| 481 if (!k->is_loaded()) { | |
| 482 is_accessible = false; | |
| 483 } else if (k->loader() != accessor->loader() && | |
| 484 get_klass_by_name_impl(accessor, k->name(), true) == NULL) { | |
| 485 // Loaded only remotely. Not linked yet. | |
| 486 is_accessible = false; | |
| 487 } else { | |
| 488 // Linked locally, and we must also check public/private, etc. | |
| 489 is_accessible = check_klass_accessibility(accessor, k->get_klassOop()); | |
| 490 } | |
| 491 return k; | |
| 492 } | |
| 493 | |
| 494 // Check for prior unloaded klass. The SystemDictionary's answers | |
| 495 // can vary over time but the compiler needs consistency. | |
| 496 ciSymbol* name = get_object(klass()->klass_part()->name())->as_symbol(); | |
| 497 ciKlass* unloaded_klass = check_get_unloaded_klass(accessor, name); | |
| 498 if (unloaded_klass != NULL) { | |
| 499 is_accessible = false; | |
| 500 return unloaded_klass; | |
| 501 } | |
| 502 | |
| 503 // It is known to be accessible, since it was found in the constant pool. | |
| 504 is_accessible = true; | |
| 505 return get_object(klass())->as_klass(); | |
| 506 } | |
| 507 | |
| 508 // ------------------------------------------------------------------ | |
| 509 // ciEnv::get_klass_by_index | |
| 510 // | |
| 511 // Get a klass from the constant pool. | |
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512 ciKlass* ciEnv::get_klass_by_index(constantPoolHandle cpool, |
| 0 | 513 int index, |
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514 bool& is_accessible, |
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515 ciInstanceKlass* accessor) { |
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516 GUARDED_VM_ENTRY(return get_klass_by_index_impl(cpool, index, is_accessible, accessor);) |
| 0 | 517 } |
| 518 | |
| 519 // ------------------------------------------------------------------ | |
| 520 // ciEnv::get_constant_by_index_impl | |
| 521 // | |
| 522 // Implementation of get_constant_by_index(). | |
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523 ciConstant ciEnv::get_constant_by_index_impl(constantPoolHandle cpool, |
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524 int index, |
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525 ciInstanceKlass* accessor) { |
| 0 | 526 EXCEPTION_CONTEXT; |
| 527 constantTag tag = cpool->tag_at(index); | |
| 528 if (tag.is_int()) { | |
| 529 return ciConstant(T_INT, (jint)cpool->int_at(index)); | |
| 530 } else if (tag.is_long()) { | |
| 531 return ciConstant((jlong)cpool->long_at(index)); | |
| 532 } else if (tag.is_float()) { | |
| 533 return ciConstant((jfloat)cpool->float_at(index)); | |
| 534 } else if (tag.is_double()) { | |
| 535 return ciConstant((jdouble)cpool->double_at(index)); | |
| 536 } else if (tag.is_string() || tag.is_unresolved_string()) { | |
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537 oop string = NULL; |
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538 if (cpool->is_pseudo_string_at(index)) { |
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539 string = cpool->pseudo_string_at(index); |
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540 } else { |
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541 string = cpool->string_at(index, THREAD); |
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542 if (HAS_PENDING_EXCEPTION) { |
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543 CLEAR_PENDING_EXCEPTION; |
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544 record_out_of_memory_failure(); |
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545 return ciConstant(); |
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546 } |
| 0 | 547 } |
| 548 ciObject* constant = get_object(string); | |
| 549 assert (constant->is_instance(), "must be an instance, or not? "); | |
| 550 return ciConstant(T_OBJECT, constant); | |
| 551 } else if (tag.is_klass() || tag.is_unresolved_klass()) { | |
| 552 // 4881222: allow ldc to take a class type | |
| 553 bool ignore; | |
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554 ciKlass* klass = get_klass_by_index_impl(cpool, index, ignore, accessor); |
| 0 | 555 if (HAS_PENDING_EXCEPTION) { |
| 556 CLEAR_PENDING_EXCEPTION; | |
| 557 record_out_of_memory_failure(); | |
| 558 return ciConstant(); | |
| 559 } | |
| 560 assert (klass->is_instance_klass() || klass->is_array_klass(), | |
| 561 "must be an instance or array klass "); | |
| 562 return ciConstant(T_OBJECT, klass); | |
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563 } else if (tag.is_object()) { |
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564 oop obj = cpool->object_at(index); |
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565 assert(obj->is_instance(), "must be an instance"); |
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566 ciObject* ciobj = get_object(obj); |
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567 return ciConstant(T_OBJECT, ciobj); |
| 0 | 568 } else { |
| 569 ShouldNotReachHere(); | |
| 570 return ciConstant(); | |
| 571 } | |
| 572 } | |
| 573 | |
| 574 // ------------------------------------------------------------------ | |
| 575 // ciEnv::is_unresolved_string_impl | |
| 576 // | |
| 577 // Implementation of is_unresolved_string(). | |
| 578 bool ciEnv::is_unresolved_string_impl(instanceKlass* accessor, int index) const { | |
| 579 EXCEPTION_CONTEXT; | |
| 580 assert(accessor->is_linked(), "must be linked before accessing constant pool"); | |
| 581 constantPoolOop cpool = accessor->constants(); | |
| 582 constantTag tag = cpool->tag_at(index); | |
| 583 return tag.is_unresolved_string(); | |
| 584 } | |
| 585 | |
| 586 // ------------------------------------------------------------------ | |
| 587 // ciEnv::is_unresolved_klass_impl | |
| 588 // | |
| 589 // Implementation of is_unresolved_klass(). | |
| 590 bool ciEnv::is_unresolved_klass_impl(instanceKlass* accessor, int index) const { | |
| 591 EXCEPTION_CONTEXT; | |
| 592 assert(accessor->is_linked(), "must be linked before accessing constant pool"); | |
| 593 constantPoolOop cpool = accessor->constants(); | |
| 594 constantTag tag = cpool->tag_at(index); | |
| 595 return tag.is_unresolved_klass(); | |
| 596 } | |
| 597 | |
| 598 // ------------------------------------------------------------------ | |
| 599 // ciEnv::get_constant_by_index | |
| 600 // | |
| 601 // Pull a constant out of the constant pool. How appropriate. | |
| 602 // | |
| 603 // Implementation note: this query is currently in no way cached. | |
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604 ciConstant ciEnv::get_constant_by_index(constantPoolHandle cpool, |
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605 int index, |
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606 ciInstanceKlass* accessor) { |
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607 GUARDED_VM_ENTRY(return get_constant_by_index_impl(cpool, index, accessor);) |
| 0 | 608 } |
| 609 | |
| 610 // ------------------------------------------------------------------ | |
| 611 // ciEnv::is_unresolved_string | |
| 612 // | |
| 613 // Check constant pool | |
| 614 // | |
| 615 // Implementation note: this query is currently in no way cached. | |
| 616 bool ciEnv::is_unresolved_string(ciInstanceKlass* accessor, | |
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617 int index) const { |
| 0 | 618 GUARDED_VM_ENTRY(return is_unresolved_string_impl(accessor->get_instanceKlass(), index); ) |
| 619 } | |
| 620 | |
| 621 // ------------------------------------------------------------------ | |
| 622 // ciEnv::is_unresolved_klass | |
| 623 // | |
| 624 // Check constant pool | |
| 625 // | |
| 626 // Implementation note: this query is currently in no way cached. | |
| 627 bool ciEnv::is_unresolved_klass(ciInstanceKlass* accessor, | |
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628 int index) const { |
| 0 | 629 GUARDED_VM_ENTRY(return is_unresolved_klass_impl(accessor->get_instanceKlass(), index); ) |
| 630 } | |
| 631 | |
| 632 // ------------------------------------------------------------------ | |
| 633 // ciEnv::get_field_by_index_impl | |
| 634 // | |
| 635 // Implementation of get_field_by_index. | |
| 636 // | |
| 637 // Implementation note: the results of field lookups are cached | |
| 638 // in the accessor klass. | |
| 639 ciField* ciEnv::get_field_by_index_impl(ciInstanceKlass* accessor, | |
| 640 int index) { | |
| 641 ciConstantPoolCache* cache = accessor->field_cache(); | |
| 642 if (cache == NULL) { | |
| 643 ciField* field = new (arena()) ciField(accessor, index); | |
| 644 return field; | |
| 645 } else { | |
| 646 ciField* field = (ciField*)cache->get(index); | |
| 647 if (field == NULL) { | |
| 648 field = new (arena()) ciField(accessor, index); | |
| 649 cache->insert(index, field); | |
| 650 } | |
| 651 return field; | |
| 652 } | |
| 653 } | |
| 654 | |
| 655 // ------------------------------------------------------------------ | |
| 656 // ciEnv::get_field_by_index | |
| 657 // | |
| 658 // Get a field by index from a klass's constant pool. | |
| 659 ciField* ciEnv::get_field_by_index(ciInstanceKlass* accessor, | |
| 660 int index) { | |
| 661 GUARDED_VM_ENTRY(return get_field_by_index_impl(accessor, index);) | |
| 662 } | |
| 663 | |
| 664 // ------------------------------------------------------------------ | |
| 665 // ciEnv::lookup_method | |
| 666 // | |
| 667 // Perform an appropriate method lookup based on accessor, holder, | |
| 668 // name, signature, and bytecode. | |
| 669 methodOop ciEnv::lookup_method(instanceKlass* accessor, | |
| 670 instanceKlass* holder, | |
| 671 symbolOop name, | |
| 672 symbolOop sig, | |
| 673 Bytecodes::Code bc) { | |
| 674 EXCEPTION_CONTEXT; | |
| 675 KlassHandle h_accessor(THREAD, accessor); | |
| 676 KlassHandle h_holder(THREAD, holder); | |
| 677 symbolHandle h_name(THREAD, name); | |
| 678 symbolHandle h_sig(THREAD, sig); | |
| 679 LinkResolver::check_klass_accessability(h_accessor, h_holder, KILL_COMPILE_ON_FATAL_(NULL)); | |
| 680 methodHandle dest_method; | |
| 681 switch (bc) { | |
| 682 case Bytecodes::_invokestatic: | |
| 683 dest_method = | |
| 684 LinkResolver::resolve_static_call_or_null(h_holder, h_name, h_sig, h_accessor); | |
| 685 break; | |
| 686 case Bytecodes::_invokespecial: | |
| 687 dest_method = | |
| 688 LinkResolver::resolve_special_call_or_null(h_holder, h_name, h_sig, h_accessor); | |
| 689 break; | |
| 690 case Bytecodes::_invokeinterface: | |
| 691 dest_method = | |
| 692 LinkResolver::linktime_resolve_interface_method_or_null(h_holder, h_name, h_sig, | |
| 693 h_accessor, true); | |
| 694 break; | |
| 695 case Bytecodes::_invokevirtual: | |
| 696 dest_method = | |
| 697 LinkResolver::linktime_resolve_virtual_method_or_null(h_holder, h_name, h_sig, | |
| 698 h_accessor, true); | |
| 699 break; | |
| 700 default: ShouldNotReachHere(); | |
| 701 } | |
| 702 | |
| 703 return dest_method(); | |
| 704 } | |
| 705 | |
| 706 | |
| 707 // ------------------------------------------------------------------ | |
| 708 // ciEnv::get_method_by_index_impl | |
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709 ciMethod* ciEnv::get_method_by_index_impl(constantPoolHandle cpool, |
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710 int index, Bytecodes::Code bc, |
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711 ciInstanceKlass* accessor) { |
| 0 | 712 int holder_index = cpool->klass_ref_index_at(index); |
| 713 bool holder_is_accessible; | |
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714 ciKlass* holder = get_klass_by_index_impl(cpool, holder_index, holder_is_accessible, accessor); |
| 0 | 715 ciInstanceKlass* declared_holder = get_instance_klass_for_declared_method_holder(holder); |
| 716 | |
| 717 // Get the method's name and signature. | |
| 718 symbolOop name_sym = cpool->name_ref_at(index); | |
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719 symbolOop sig_sym = cpool->signature_ref_at(index); |
| 0 | 720 |
| 721 if (holder_is_accessible) { // Our declared holder is loaded. | |
| 722 instanceKlass* lookup = declared_holder->get_instanceKlass(); | |
| 723 methodOop m = lookup_method(accessor->get_instanceKlass(), lookup, name_sym, sig_sym, bc); | |
| 724 if (m != NULL) { | |
| 725 // We found the method. | |
| 726 return get_object(m)->as_method(); | |
| 727 } | |
| 728 } | |
| 729 | |
| 730 // Either the declared holder was not loaded, or the method could | |
| 731 // not be found. Create a dummy ciMethod to represent the failed | |
| 732 // lookup. | |
| 733 | |
| 734 return get_unloaded_method(declared_holder, | |
| 735 get_object(name_sym)->as_symbol(), | |
| 736 get_object(sig_sym)->as_symbol()); | |
| 737 } | |
| 738 | |
| 739 | |
| 740 // ------------------------------------------------------------------ | |
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741 // ciEnv::get_fake_invokedynamic_method_impl |
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742 ciMethod* ciEnv::get_fake_invokedynamic_method_impl(constantPoolHandle cpool, |
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743 int index, Bytecodes::Code bc) { |
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744 assert(bc == Bytecodes::_invokedynamic, "must be invokedynamic"); |
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745 |
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746 // Get the CallSite from the constant pool cache. |
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747 ConstantPoolCacheEntry* cpc_entry = cpool->cache()->secondary_entry_at(index); |
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748 assert(cpc_entry != NULL && cpc_entry->is_secondary_entry(), "sanity"); |
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749 Handle call_site = cpc_entry->f1(); |
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750 |
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751 // Call site might not be linked yet. |
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752 if (call_site.is_null()) { |
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753 ciInstanceKlass* mh_klass = get_object(SystemDictionary::MethodHandle_klass())->as_instance_klass(); |
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754 ciSymbol* sig_sym = get_object(cpool->signature_ref_at(index))->as_symbol(); |
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755 return get_unloaded_method(mh_klass, ciSymbol::invoke_name(), sig_sym); |
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756 } |
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757 |
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758 // Get the methodOop from the CallSite. |
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759 methodOop method_oop = (methodOop) java_dyn_CallSite::vmmethod(call_site()); |
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760 assert(method_oop != NULL, "sanity"); |
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761 assert(method_oop->is_method_handle_invoke(), "consistent"); |
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762 |
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763 return get_object(method_oop)->as_method(); |
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764 } |
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765 |
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766 |
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767 // ------------------------------------------------------------------ |
| 0 | 768 // ciEnv::get_instance_klass_for_declared_method_holder |
| 769 ciInstanceKlass* ciEnv::get_instance_klass_for_declared_method_holder(ciKlass* method_holder) { | |
| 770 // For the case of <array>.clone(), the method holder can be a ciArrayKlass | |
| 771 // instead of a ciInstanceKlass. For that case simply pretend that the | |
| 772 // declared holder is Object.clone since that's where the call will bottom out. | |
| 773 // A more correct fix would trickle out through many interfaces in CI, | |
| 774 // requiring ciInstanceKlass* to become ciKlass* and many more places would | |
| 775 // require checks to make sure the expected type was found. Given that this | |
| 776 // only occurs for clone() the more extensive fix seems like overkill so | |
| 777 // instead we simply smear the array type into Object. | |
| 778 if (method_holder->is_instance_klass()) { | |
| 779 return method_holder->as_instance_klass(); | |
| 780 } else if (method_holder->is_array_klass()) { | |
| 781 return current()->Object_klass(); | |
| 782 } else { | |
| 783 ShouldNotReachHere(); | |
| 784 } | |
| 785 return NULL; | |
| 786 } | |
| 787 | |
| 788 | |
| 789 // ------------------------------------------------------------------ | |
| 790 // ciEnv::get_method_by_index | |
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791 ciMethod* ciEnv::get_method_by_index(constantPoolHandle cpool, |
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792 int index, Bytecodes::Code bc, |
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793 ciInstanceKlass* accessor) { |
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794 if (bc == Bytecodes::_invokedynamic) { |
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795 GUARDED_VM_ENTRY(return get_fake_invokedynamic_method_impl(cpool, index, bc);) |
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796 } else { |
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797 GUARDED_VM_ENTRY(return get_method_by_index_impl(cpool, index, bc, accessor);) |
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798 } |
| 0 | 799 } |
| 800 | |
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801 |
| 0 | 802 // ------------------------------------------------------------------ |
| 803 // ciEnv::name_buffer | |
| 804 char *ciEnv::name_buffer(int req_len) { | |
| 805 if (_name_buffer_len < req_len) { | |
| 806 if (_name_buffer == NULL) { | |
| 807 _name_buffer = (char*)arena()->Amalloc(sizeof(char)*req_len); | |
| 808 _name_buffer_len = req_len; | |
| 809 } else { | |
| 810 _name_buffer = | |
| 811 (char*)arena()->Arealloc(_name_buffer, _name_buffer_len, req_len); | |
| 812 _name_buffer_len = req_len; | |
| 813 } | |
| 814 } | |
| 815 return _name_buffer; | |
| 816 } | |
| 817 | |
| 818 // ------------------------------------------------------------------ | |
| 819 // ciEnv::is_in_vm | |
| 820 bool ciEnv::is_in_vm() { | |
| 821 return JavaThread::current()->thread_state() == _thread_in_vm; | |
| 822 } | |
| 823 | |
| 824 bool ciEnv::system_dictionary_modification_counter_changed() { | |
| 825 return _system_dictionary_modification_counter != SystemDictionary::number_of_modifications(); | |
| 826 } | |
| 827 | |
| 828 // ------------------------------------------------------------------ | |
| 829 // ciEnv::check_for_system_dictionary_modification | |
| 830 // Check for changes to the system dictionary during compilation | |
| 831 // class loads, evolution, breakpoints | |
| 832 void ciEnv::check_for_system_dictionary_modification(ciMethod* target) { | |
| 833 if (failing()) return; // no need for further checks | |
| 834 | |
| 835 // Dependencies must be checked when the system dictionary changes. | |
| 836 // If logging is enabled all violated dependences will be recorded in | |
| 837 // the log. In debug mode check dependencies even if the system | |
| 838 // dictionary hasn't changed to verify that no invalid dependencies | |
| 839 // were inserted. Any violated dependences in this case are dumped to | |
| 840 // the tty. | |
| 841 | |
| 842 bool counter_changed = system_dictionary_modification_counter_changed(); | |
| 843 bool test_deps = counter_changed; | |
| 844 DEBUG_ONLY(test_deps = true); | |
| 845 if (!test_deps) return; | |
| 846 | |
| 847 bool print_failures = false; | |
| 848 DEBUG_ONLY(print_failures = !counter_changed); | |
| 849 | |
| 850 bool keep_going = (print_failures || xtty != NULL); | |
| 851 | |
| 852 int violated = 0; | |
| 853 | |
| 854 for (Dependencies::DepStream deps(dependencies()); deps.next(); ) { | |
| 855 klassOop witness = deps.check_dependency(); | |
| 856 if (witness != NULL) { | |
| 857 ++violated; | |
| 858 if (print_failures) deps.print_dependency(witness, /*verbose=*/ true); | |
| 859 // If there's no log and we're not sanity-checking, we're done. | |
| 860 if (!keep_going) break; | |
| 861 } | |
| 862 } | |
| 863 | |
| 864 if (violated != 0) { | |
| 865 assert(counter_changed, "failed dependencies, but counter didn't change"); | |
| 866 record_failure("concurrent class loading"); | |
| 867 } | |
| 868 } | |
| 869 | |
| 870 // ------------------------------------------------------------------ | |
| 871 // ciEnv::register_method | |
| 872 void ciEnv::register_method(ciMethod* target, | |
| 873 int entry_bci, | |
| 874 CodeOffsets* offsets, | |
| 875 int orig_pc_offset, | |
| 876 CodeBuffer* code_buffer, | |
| 877 int frame_words, | |
| 878 OopMapSet* oop_map_set, | |
| 879 ExceptionHandlerTable* handler_table, | |
| 880 ImplicitExceptionTable* inc_table, | |
| 881 AbstractCompiler* compiler, | |
| 882 int comp_level, | |
| 883 bool has_debug_info, | |
| 884 bool has_unsafe_access) { | |
| 885 VM_ENTRY_MARK; | |
| 886 nmethod* nm = NULL; | |
| 887 { | |
| 888 // To prevent compile queue updates. | |
| 889 MutexLocker locker(MethodCompileQueue_lock, THREAD); | |
| 890 | |
| 891 // Prevent SystemDictionary::add_to_hierarchy from running | |
| 892 // and invalidating our dependencies until we install this method. | |
| 893 MutexLocker ml(Compile_lock); | |
| 894 | |
|
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895 // Change in Jvmti state may invalidate compilation. |
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896 if (!failing() && |
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897 ( (!jvmti_can_hotswap_or_post_breakpoint() && |
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898 JvmtiExport::can_hotswap_or_post_breakpoint()) || |
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899 (!jvmti_can_examine_or_deopt_anywhere() && |
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900 JvmtiExport::can_examine_or_deopt_anywhere()) || |
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901 (!jvmti_can_access_local_variables() && |
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902 JvmtiExport::can_access_local_variables()) || |
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903 (!jvmti_can_post_exceptions() && |
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904 JvmtiExport::can_post_exceptions()) )) { |
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905 record_failure("Jvmti state change invalidated dependencies"); |
| 0 | 906 } |
| 907 | |
|
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908 // Change in DTrace flags may invalidate compilation. |
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909 if (!failing() && |
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910 ( (!dtrace_extended_probes() && ExtendedDTraceProbes) || |
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911 (!dtrace_method_probes() && DTraceMethodProbes) || |
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912 (!dtrace_alloc_probes() && DTraceAllocProbes) )) { |
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913 record_failure("DTrace flags change invalidated dependencies"); |
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914 } |
| 0 | 915 |
|
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916 if (!failing()) { |
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917 if (log() != NULL) { |
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918 // Log the dependencies which this compilation declares. |
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919 dependencies()->log_all_dependencies(); |
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920 } |
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921 |
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922 // Encode the dependencies now, so we can check them right away. |
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923 dependencies()->encode_content_bytes(); |
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924 |
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925 // Check for {class loads, evolution, breakpoints} during compilation |
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926 check_for_system_dictionary_modification(target); |
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927 } |
| 0 | 928 |
| 929 methodHandle method(THREAD, target->get_methodOop()); | |
| 930 | |
| 931 if (failing()) { | |
| 932 // While not a true deoptimization, it is a preemptive decompile. | |
| 933 methodDataOop mdo = method()->method_data(); | |
| 934 if (mdo != NULL) { | |
| 935 mdo->inc_decompile_count(); | |
| 936 } | |
| 937 | |
| 938 // All buffers in the CodeBuffer are allocated in the CodeCache. | |
| 939 // If the code buffer is created on each compile attempt | |
| 940 // as in C2, then it must be freed. | |
| 941 code_buffer->free_blob(); | |
| 942 return; | |
| 943 } | |
| 944 | |
| 945 assert(offsets->value(CodeOffsets::Deopt) != -1, "must have deopt entry"); | |
| 946 assert(offsets->value(CodeOffsets::Exceptions) != -1, "must have exception entry"); | |
| 947 | |
| 948 nm = nmethod::new_nmethod(method, | |
| 949 compile_id(), | |
| 950 entry_bci, | |
| 951 offsets, | |
| 952 orig_pc_offset, | |
| 953 debug_info(), dependencies(), code_buffer, | |
| 954 frame_words, oop_map_set, | |
| 955 handler_table, inc_table, | |
| 956 compiler, comp_level); | |
| 957 | |
| 958 // Free codeBlobs | |
| 959 code_buffer->free_blob(); | |
| 960 | |
| 961 // stress test 6243940 by immediately making the method | |
| 962 // non-entrant behind the system's back. This has serious | |
| 963 // side effects on the code cache and is not meant for | |
| 964 // general stress testing | |
| 965 if (nm != NULL && StressNonEntrant) { | |
| 966 MutexLockerEx pl(Patching_lock, Mutex::_no_safepoint_check_flag); | |
| 967 NativeJump::patch_verified_entry(nm->entry_point(), nm->verified_entry_point(), | |
| 968 SharedRuntime::get_handle_wrong_method_stub()); | |
| 969 } | |
| 970 | |
| 971 if (nm == NULL) { | |
| 972 // The CodeCache is full. Print out warning and disable compilation. | |
| 973 record_failure("code cache is full"); | |
| 974 UseInterpreter = true; | |
| 975 if (UseCompiler || AlwaysCompileLoopMethods ) { | |
| 976 #ifndef PRODUCT | |
| 977 warning("CodeCache is full. Compiler has been disabled"); | |
| 978 if (CompileTheWorld || ExitOnFullCodeCache) { | |
| 979 before_exit(JavaThread::current()); | |
| 980 exit_globals(); // will delete tty | |
| 981 vm_direct_exit(CompileTheWorld ? 0 : 1); | |
| 982 } | |
| 983 #endif | |
| 984 UseCompiler = false; | |
| 985 AlwaysCompileLoopMethods = false; | |
| 986 } | |
| 987 } else { | |
| 988 NOT_PRODUCT(nm->set_has_debug_info(has_debug_info); ) | |
| 989 nm->set_has_unsafe_access(has_unsafe_access); | |
| 990 | |
| 991 // Record successful registration. | |
| 992 // (Put nm into the task handle *before* publishing to the Java heap.) | |
| 993 if (task() != NULL) task()->set_code(nm); | |
| 994 | |
| 995 if (entry_bci == InvocationEntryBci) { | |
| 996 #ifdef TIERED | |
| 997 // If there is an old version we're done with it | |
| 998 nmethod* old = method->code(); | |
| 999 if (TraceMethodReplacement && old != NULL) { | |
| 1000 ResourceMark rm; | |
| 1001 char *method_name = method->name_and_sig_as_C_string(); | |
| 1002 tty->print_cr("Replacing method %s", method_name); | |
| 1003 } | |
| 1004 if (old != NULL ) { | |
| 1005 old->make_not_entrant(); | |
| 1006 } | |
| 1007 #endif // TIERED | |
| 1008 if (TraceNMethodInstalls ) { | |
| 1009 ResourceMark rm; | |
| 1010 char *method_name = method->name_and_sig_as_C_string(); | |
| 1011 ttyLocker ttyl; | |
| 1012 tty->print_cr("Installing method (%d) %s ", | |
| 1013 comp_level, | |
| 1014 method_name); | |
| 1015 } | |
| 1016 // Allow the code to be executed | |
| 1017 method->set_code(method, nm); | |
| 1018 } else { | |
| 1019 if (TraceNMethodInstalls ) { | |
| 1020 ResourceMark rm; | |
| 1021 char *method_name = method->name_and_sig_as_C_string(); | |
| 1022 ttyLocker ttyl; | |
| 1023 tty->print_cr("Installing osr method (%d) %s @ %d", | |
| 1024 comp_level, | |
| 1025 method_name, | |
| 1026 entry_bci); | |
| 1027 } | |
| 1028 instanceKlass::cast(method->method_holder())->add_osr_nmethod(nm); | |
| 1029 | |
| 1030 } | |
| 1031 } | |
| 1032 } | |
| 1033 // JVMTI -- compiled method notification (must be done outside lock) | |
| 1034 if (nm != NULL) { | |
| 1035 nm->post_compiled_method_load_event(); | |
| 1036 } | |
| 1037 | |
| 1038 } | |
| 1039 | |
| 1040 | |
| 1041 // ------------------------------------------------------------------ | |
| 1042 // ciEnv::find_system_klass | |
| 1043 ciKlass* ciEnv::find_system_klass(ciSymbol* klass_name) { | |
| 1044 VM_ENTRY_MARK; | |
| 1045 return get_klass_by_name_impl(NULL, klass_name, false); | |
| 1046 } | |
| 1047 | |
| 1048 // ------------------------------------------------------------------ | |
| 1049 // ciEnv::comp_level | |
| 1050 int ciEnv::comp_level() { | |
| 1051 if (task() == NULL) return CompLevel_full_optimization; | |
| 1052 return task()->comp_level(); | |
| 1053 } | |
| 1054 | |
| 1055 // ------------------------------------------------------------------ | |
| 1056 // ciEnv::compile_id | |
| 1057 uint ciEnv::compile_id() { | |
| 1058 if (task() == NULL) return 0; | |
| 1059 return task()->compile_id(); | |
| 1060 } | |
| 1061 | |
| 1062 // ------------------------------------------------------------------ | |
| 1063 // ciEnv::notice_inlined_method() | |
| 1064 void ciEnv::notice_inlined_method(ciMethod* method) { | |
| 1065 _num_inlined_bytecodes += method->code_size(); | |
| 1066 } | |
| 1067 | |
| 1068 // ------------------------------------------------------------------ | |
| 1069 // ciEnv::num_inlined_bytecodes() | |
| 1070 int ciEnv::num_inlined_bytecodes() const { | |
| 1071 return _num_inlined_bytecodes; | |
| 1072 } | |
| 1073 | |
| 1074 // ------------------------------------------------------------------ | |
| 1075 // ciEnv::record_failure() | |
| 1076 void ciEnv::record_failure(const char* reason) { | |
| 1077 if (log() != NULL) { | |
| 1078 log()->elem("failure reason='%s'", reason); | |
| 1079 } | |
| 1080 if (_failure_reason == NULL) { | |
| 1081 // Record the first failure reason. | |
| 1082 _failure_reason = reason; | |
| 1083 } | |
| 1084 } | |
| 1085 | |
| 1086 // ------------------------------------------------------------------ | |
| 1087 // ciEnv::record_method_not_compilable() | |
| 1088 void ciEnv::record_method_not_compilable(const char* reason, bool all_tiers) { | |
| 1089 int new_compilable = | |
| 1090 all_tiers ? MethodCompilable_never : MethodCompilable_not_at_tier ; | |
| 1091 | |
| 1092 // Only note transitions to a worse state | |
| 1093 if (new_compilable > _compilable) { | |
| 1094 if (log() != NULL) { | |
| 1095 if (all_tiers) { | |
| 1096 log()->elem("method_not_compilable"); | |
| 1097 } else { | |
| 1098 log()->elem("method_not_compilable_at_tier"); | |
| 1099 } | |
| 1100 } | |
| 1101 _compilable = new_compilable; | |
| 1102 | |
| 1103 // Reset failure reason; this one is more important. | |
| 1104 _failure_reason = NULL; | |
| 1105 record_failure(reason); | |
| 1106 } | |
| 1107 } | |
| 1108 | |
| 1109 // ------------------------------------------------------------------ | |
| 1110 // ciEnv::record_out_of_memory_failure() | |
| 1111 void ciEnv::record_out_of_memory_failure() { | |
| 1112 // If memory is low, we stop compiling methods. | |
| 1113 record_method_not_compilable("out of memory"); | |
| 1114 } |