Mercurial > hg > truffle
annotate src/share/vm/ci/ciEnv.cpp @ 2181:d25d4ca69222
Merge.
| author | Thomas Wuerthinger <wuerthinger@ssw.jku.at> |
|---|---|
| date | Wed, 16 Feb 2011 13:47:20 +0100 |
| parents | 06f017f7daa7 3582bf76420e |
| children | 2ab52cda08e5 |
| 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 | |
| 1972 | 25 #include "precompiled.hpp" |
| 26 #include "ci/ciConstant.hpp" | |
| 27 #include "ci/ciEnv.hpp" | |
| 28 #include "ci/ciField.hpp" | |
| 29 #include "ci/ciInstance.hpp" | |
| 30 #include "ci/ciInstanceKlass.hpp" | |
| 31 #include "ci/ciInstanceKlassKlass.hpp" | |
| 32 #include "ci/ciMethod.hpp" | |
| 33 #include "ci/ciNullObject.hpp" | |
| 34 #include "ci/ciObjArrayKlassKlass.hpp" | |
| 35 #include "ci/ciTypeArrayKlassKlass.hpp" | |
| 36 #include "ci/ciUtilities.hpp" | |
| 37 #include "classfile/systemDictionary.hpp" | |
| 38 #include "classfile/vmSymbols.hpp" | |
| 39 #include "code/scopeDesc.hpp" | |
| 40 #include "compiler/compileBroker.hpp" | |
| 41 #include "compiler/compileLog.hpp" | |
| 42 #include "compiler/compilerOracle.hpp" | |
| 43 #include "gc_interface/collectedHeap.inline.hpp" | |
| 44 #include "interpreter/linkResolver.hpp" | |
| 45 #include "memory/allocation.inline.hpp" | |
| 46 #include "memory/oopFactory.hpp" | |
| 47 #include "memory/universe.inline.hpp" | |
| 48 #include "oops/methodDataOop.hpp" | |
| 49 #include "oops/objArrayKlass.hpp" | |
| 50 #include "oops/oop.inline.hpp" | |
| 51 #include "oops/oop.inline2.hpp" | |
| 52 #include "prims/jvmtiExport.hpp" | |
| 53 #include "runtime/init.hpp" | |
| 54 #include "runtime/reflection.hpp" | |
| 55 #include "runtime/sharedRuntime.hpp" | |
| 56 #include "utilities/dtrace.hpp" | |
| 57 #ifdef COMPILER1 | |
| 58 #include "c1/c1_Runtime1.hpp" | |
| 59 #endif | |
| 60 #ifdef COMPILER2 | |
| 61 #include "opto/runtime.hpp" | |
| 62 #endif | |
| 0 | 63 |
| 64 // ciEnv | |
| 65 // | |
| 66 // This class is the top level broker for requests from the compiler | |
| 67 // to the VM. | |
| 68 | |
| 69 ciObject* ciEnv::_null_object_instance; | |
| 70 ciMethodKlass* ciEnv::_method_klass_instance; | |
| 71 ciKlassKlass* ciEnv::_klass_klass_instance; | |
| 72 ciInstanceKlassKlass* ciEnv::_instance_klass_klass_instance; | |
| 73 ciTypeArrayKlassKlass* ciEnv::_type_array_klass_klass_instance; | |
| 74 ciObjArrayKlassKlass* ciEnv::_obj_array_klass_klass_instance; | |
| 75 | |
| 1142 | 76 #define WK_KLASS_DEFN(name, ignore_s, ignore_o) ciInstanceKlass* ciEnv::_##name = NULL; |
| 77 WK_KLASSES_DO(WK_KLASS_DEFN) | |
| 78 #undef WK_KLASS_DEFN | |
| 0 | 79 |
| 80 ciSymbol* ciEnv::_unloaded_cisymbol = NULL; | |
| 81 ciInstanceKlass* ciEnv::_unloaded_ciinstance_klass = NULL; | |
| 82 ciObjArrayKlass* ciEnv::_unloaded_ciobjarrayklass = NULL; | |
| 83 | |
| 84 jobject ciEnv::_ArrayIndexOutOfBoundsException_handle = NULL; | |
| 85 jobject ciEnv::_ArrayStoreException_handle = NULL; | |
| 86 jobject ciEnv::_ClassCastException_handle = NULL; | |
| 87 | |
| 88 #ifndef PRODUCT | |
| 89 static bool firstEnv = true; | |
| 90 #endif /* PRODUCT */ | |
| 91 | |
| 92 // ------------------------------------------------------------------ | |
| 93 // ciEnv::ciEnv | |
| 94 ciEnv::ciEnv(CompileTask* task, int system_dictionary_modification_counter) { | |
| 95 VM_ENTRY_MARK; | |
| 96 | |
| 97 // Set up ciEnv::current immediately, for the sake of ciObjectFactory, etc. | |
| 98 thread->set_env(this); | |
| 99 assert(ciEnv::current() == this, "sanity"); | |
| 100 | |
| 101 _oop_recorder = NULL; | |
| 102 _debug_info = NULL; | |
| 103 _dependencies = NULL; | |
| 104 _failure_reason = NULL; | |
| 105 _compilable = MethodCompilable; | |
| 106 _break_at_compile = false; | |
| 107 _compiler_data = NULL; | |
| 108 #ifndef PRODUCT | |
| 109 assert(!firstEnv, "not initialized properly"); | |
| 110 #endif /* !PRODUCT */ | |
| 111 | |
| 112 _system_dictionary_modification_counter = system_dictionary_modification_counter; | |
| 113 _num_inlined_bytecodes = 0; | |
| 114 assert(task == NULL || thread->task() == task, "sanity"); | |
| 115 _task = task; | |
| 116 _log = NULL; | |
| 117 | |
| 118 // Temporary buffer for creating symbols and such. | |
| 119 _name_buffer = NULL; | |
| 120 _name_buffer_len = 0; | |
| 121 | |
| 122 _arena = &_ciEnv_arena; | |
| 123 _factory = new (_arena) ciObjectFactory(_arena, 128); | |
| 124 | |
| 125 // Preload commonly referenced system ciObjects. | |
| 126 | |
| 127 // During VM initialization, these instances have not yet been created. | |
| 128 // Assertions ensure that these instances are not accessed before | |
| 129 // their initialization. | |
| 130 | |
| 131 assert(Universe::is_fully_initialized(), "should be complete"); | |
| 132 | |
| 133 oop o = Universe::null_ptr_exception_instance(); | |
| 134 assert(o != NULL, "should have been initialized"); | |
| 135 _NullPointerException_instance = get_object(o)->as_instance(); | |
| 136 o = Universe::arithmetic_exception_instance(); | |
| 137 assert(o != NULL, "should have been initialized"); | |
| 138 _ArithmeticException_instance = get_object(o)->as_instance(); | |
| 139 | |
| 140 _ArrayIndexOutOfBoundsException_instance = NULL; | |
| 141 _ArrayStoreException_instance = NULL; | |
| 142 _ClassCastException_instance = NULL; | |
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143 _the_null_string = NULL; |
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144 _the_min_jint_string = NULL; |
| 0 | 145 } |
| 146 | |
| 147 ciEnv::ciEnv(Arena* arena) { | |
| 148 ASSERT_IN_VM; | |
| 149 | |
| 150 // Set up ciEnv::current immediately, for the sake of ciObjectFactory, etc. | |
| 151 CompilerThread* current_thread = CompilerThread::current(); | |
| 152 assert(current_thread->env() == NULL, "must be"); | |
| 153 current_thread->set_env(this); | |
| 154 assert(ciEnv::current() == this, "sanity"); | |
| 155 | |
| 156 _oop_recorder = NULL; | |
| 157 _debug_info = NULL; | |
| 158 _dependencies = NULL; | |
| 159 _failure_reason = NULL; | |
| 160 _compilable = MethodCompilable_never; | |
| 161 _break_at_compile = false; | |
| 162 _compiler_data = NULL; | |
| 163 #ifndef PRODUCT | |
| 164 assert(firstEnv, "must be first"); | |
| 165 firstEnv = false; | |
| 166 #endif /* !PRODUCT */ | |
| 167 | |
| 168 _system_dictionary_modification_counter = 0; | |
| 169 _num_inlined_bytecodes = 0; | |
| 170 _task = NULL; | |
| 171 _log = NULL; | |
| 172 | |
| 173 // Temporary buffer for creating symbols and such. | |
| 174 _name_buffer = NULL; | |
| 175 _name_buffer_len = 0; | |
| 176 | |
| 177 _arena = arena; | |
| 178 _factory = new (_arena) ciObjectFactory(_arena, 128); | |
| 179 | |
| 180 // Preload commonly referenced system ciObjects. | |
| 181 | |
| 182 // During VM initialization, these instances have not yet been created. | |
| 183 // Assertions ensure that these instances are not accessed before | |
| 184 // their initialization. | |
| 185 | |
| 186 assert(Universe::is_fully_initialized(), "must be"); | |
| 187 | |
| 188 oop o = Universe::null_ptr_exception_instance(); | |
| 189 assert(o != NULL, "should have been initialized"); | |
| 190 _NullPointerException_instance = get_object(o)->as_instance(); | |
| 191 o = Universe::arithmetic_exception_instance(); | |
| 192 assert(o != NULL, "should have been initialized"); | |
| 193 _ArithmeticException_instance = get_object(o)->as_instance(); | |
| 194 | |
| 195 _ArrayIndexOutOfBoundsException_instance = NULL; | |
| 196 _ArrayStoreException_instance = NULL; | |
| 197 _ClassCastException_instance = NULL; | |
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198 _the_null_string = NULL; |
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199 _the_min_jint_string = NULL; |
| 0 | 200 } |
| 201 | |
| 202 ciEnv::~ciEnv() { | |
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203 _factory->cleanup(); |
| 0 | 204 CompilerThread* current_thread = CompilerThread::current(); |
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205 _factory->remove_symbols(); |
| 0 | 206 current_thread->set_env(NULL); |
| 207 } | |
| 208 | |
| 209 // ------------------------------------------------------------------ | |
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210 // Cache Jvmti state |
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211 void ciEnv::cache_jvmti_state() { |
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212 VM_ENTRY_MARK; |
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213 // Get Jvmti capabilities under lock to get consistant values. |
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214 MutexLocker mu(JvmtiThreadState_lock); |
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215 _jvmti_can_hotswap_or_post_breakpoint = JvmtiExport::can_hotswap_or_post_breakpoint(); |
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216 _jvmti_can_access_local_variables = JvmtiExport::can_access_local_variables(); |
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217 _jvmti_can_post_on_exceptions = JvmtiExport::can_post_on_exceptions(); |
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218 } |
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219 |
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220 // ------------------------------------------------------------------ |
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221 // Cache DTrace flags |
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222 void ciEnv::cache_dtrace_flags() { |
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223 // Need lock? |
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224 _dtrace_extended_probes = ExtendedDTraceProbes; |
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225 if (_dtrace_extended_probes) { |
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226 _dtrace_monitor_probes = true; |
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227 _dtrace_method_probes = true; |
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228 _dtrace_alloc_probes = true; |
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229 } else { |
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230 _dtrace_monitor_probes = DTraceMonitorProbes; |
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231 _dtrace_method_probes = DTraceMethodProbes; |
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232 _dtrace_alloc_probes = DTraceAllocProbes; |
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233 } |
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234 } |
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235 |
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236 // ------------------------------------------------------------------ |
| 0 | 237 // helper for lazy exception creation |
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238 ciInstance* ciEnv::get_or_create_exception(jobject& handle, Symbol* name) { |
| 0 | 239 VM_ENTRY_MARK; |
| 240 if (handle == NULL) { | |
| 241 // Cf. universe.cpp, creation of Universe::_null_ptr_exception_instance. | |
| 242 klassOop k = SystemDictionary::find(name, Handle(), Handle(), THREAD); | |
| 243 jobject objh = NULL; | |
| 244 if (!HAS_PENDING_EXCEPTION && k != NULL) { | |
| 245 oop obj = instanceKlass::cast(k)->allocate_permanent_instance(THREAD); | |
| 246 if (!HAS_PENDING_EXCEPTION) | |
| 247 objh = JNIHandles::make_global(obj); | |
| 248 } | |
| 249 if (HAS_PENDING_EXCEPTION) { | |
| 250 CLEAR_PENDING_EXCEPTION; | |
| 251 } else { | |
| 252 handle = objh; | |
| 253 } | |
| 254 } | |
| 255 oop obj = JNIHandles::resolve(handle); | |
| 256 return obj == NULL? NULL: get_object(obj)->as_instance(); | |
| 257 } | |
| 258 | |
| 259 // ------------------------------------------------------------------ | |
| 260 // ciEnv::ArrayIndexOutOfBoundsException_instance, etc. | |
| 261 ciInstance* ciEnv::ArrayIndexOutOfBoundsException_instance() { | |
| 262 if (_ArrayIndexOutOfBoundsException_instance == NULL) { | |
| 263 _ArrayIndexOutOfBoundsException_instance | |
| 264 = get_or_create_exception(_ArrayIndexOutOfBoundsException_handle, | |
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265 vmSymbols::java_lang_ArrayIndexOutOfBoundsException()); |
| 0 | 266 } |
| 267 return _ArrayIndexOutOfBoundsException_instance; | |
| 268 } | |
| 269 ciInstance* ciEnv::ArrayStoreException_instance() { | |
| 270 if (_ArrayStoreException_instance == NULL) { | |
| 271 _ArrayStoreException_instance | |
| 272 = get_or_create_exception(_ArrayStoreException_handle, | |
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273 vmSymbols::java_lang_ArrayStoreException()); |
| 0 | 274 } |
| 275 return _ArrayStoreException_instance; | |
| 276 } | |
| 277 ciInstance* ciEnv::ClassCastException_instance() { | |
| 278 if (_ClassCastException_instance == NULL) { | |
| 279 _ClassCastException_instance | |
| 280 = get_or_create_exception(_ClassCastException_handle, | |
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281 vmSymbols::java_lang_ClassCastException()); |
| 0 | 282 } |
| 283 return _ClassCastException_instance; | |
| 284 } | |
| 285 | |
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286 ciInstance* ciEnv::the_null_string() { |
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287 if (_the_null_string == NULL) { |
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288 VM_ENTRY_MARK; |
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289 _the_null_string = get_object(Universe::the_null_string())->as_instance(); |
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290 } |
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291 return _the_null_string; |
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292 } |
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293 |
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294 ciInstance* ciEnv::the_min_jint_string() { |
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295 if (_the_min_jint_string == NULL) { |
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296 VM_ENTRY_MARK; |
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297 _the_min_jint_string = get_object(Universe::the_min_jint_string())->as_instance(); |
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298 } |
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299 return _the_min_jint_string; |
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300 } |
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301 |
| 0 | 302 // ------------------------------------------------------------------ |
| 303 // ciEnv::get_method_from_handle | |
| 304 ciMethod* ciEnv::get_method_from_handle(jobject method) { | |
| 305 VM_ENTRY_MARK; | |
| 306 return get_object(JNIHandles::resolve(method))->as_method(); | |
| 307 } | |
| 308 | |
| 309 // ------------------------------------------------------------------ | |
| 310 // ciEnv::make_array | |
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311 ciArray* ciEnv::make_system_array(GrowableArray<ciObject*>* objects) { |
| 0 | 312 VM_ENTRY_MARK; |
| 313 int length = objects->length(); | |
| 314 objArrayOop a = oopFactory::new_system_objArray(length, THREAD); | |
| 315 if (HAS_PENDING_EXCEPTION) { | |
| 316 CLEAR_PENDING_EXCEPTION; | |
| 317 record_out_of_memory_failure(); | |
| 318 return NULL; | |
| 319 } | |
| 320 for (int i = 0; i < length; i++) { | |
| 321 a->obj_at_put(i, objects->at(i)->get_oop()); | |
| 322 } | |
| 323 assert(a->is_perm(), ""); | |
| 324 return get_object(a)->as_array(); | |
| 325 } | |
| 326 | |
| 327 | |
| 328 // ------------------------------------------------------------------ | |
| 329 // ciEnv::array_element_offset_in_bytes | |
| 330 int ciEnv::array_element_offset_in_bytes(ciArray* a_h, ciObject* o_h) { | |
| 331 VM_ENTRY_MARK; | |
| 332 objArrayOop a = (objArrayOop)a_h->get_oop(); | |
| 333 assert(a->is_objArray(), ""); | |
| 334 int length = a->length(); | |
| 335 oop o = o_h->get_oop(); | |
| 336 for (int i = 0; i < length; i++) { | |
| 337 if (a->obj_at(i) == o) return i; | |
| 338 } | |
| 339 return -1; | |
| 340 } | |
| 341 | |
| 342 | |
| 343 // ------------------------------------------------------------------ | |
| 344 // ciEnv::check_klass_accessiblity | |
| 345 // | |
| 346 // Note: the logic of this method should mirror the logic of | |
| 347 // constantPoolOopDesc::verify_constant_pool_resolve. | |
| 348 bool ciEnv::check_klass_accessibility(ciKlass* accessing_klass, | |
| 349 klassOop resolved_klass) { | |
| 350 if (accessing_klass == NULL || !accessing_klass->is_loaded()) { | |
| 351 return true; | |
| 352 } | |
| 353 if (accessing_klass->is_obj_array()) { | |
| 354 accessing_klass = accessing_klass->as_obj_array_klass()->base_element_klass(); | |
| 355 } | |
| 356 if (!accessing_klass->is_instance_klass()) { | |
| 357 return true; | |
| 358 } | |
| 359 | |
| 360 if (resolved_klass->klass_part()->oop_is_objArray()) { | |
| 361 // Find the element klass, if this is an array. | |
| 362 resolved_klass = objArrayKlass::cast(resolved_klass)->bottom_klass(); | |
| 363 } | |
| 364 if (resolved_klass->klass_part()->oop_is_instance()) { | |
| 365 return Reflection::verify_class_access(accessing_klass->get_klassOop(), | |
| 366 resolved_klass, | |
| 367 true); | |
| 368 } | |
| 369 return true; | |
| 370 } | |
| 371 | |
| 372 // ------------------------------------------------------------------ | |
| 373 // ciEnv::get_klass_by_name_impl | |
| 374 ciKlass* ciEnv::get_klass_by_name_impl(ciKlass* accessing_klass, | |
| 375 ciSymbol* name, | |
| 376 bool require_local) { | |
| 377 ASSERT_IN_VM; | |
| 378 EXCEPTION_CONTEXT; | |
| 379 | |
| 380 // Now we need to check the SystemDictionary | |
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381 Symbol* sym = name->get_symbol(); |
| 0 | 382 if (sym->byte_at(0) == 'L' && |
| 383 sym->byte_at(sym->utf8_length()-1) == ';') { | |
| 384 // This is a name from a signature. Strip off the trimmings. | |
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385 // Call recursive to keep scope of strippedsym. |
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386 TempNewSymbol strippedsym = SymbolTable::new_symbol(sym->as_utf8()+1, |
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387 sym->utf8_length()-2, |
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388 KILL_COMPILE_ON_FATAL_(_unloaded_ciinstance_klass)); |
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389 ciSymbol* strippedname = get_symbol(strippedsym); |
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390 return get_klass_by_name_impl(accessing_klass, strippedname, require_local); |
| 0 | 391 } |
| 392 | |
| 393 // Check for prior unloaded klass. The SystemDictionary's answers | |
| 394 // can vary over time but the compiler needs consistency. | |
| 395 ciKlass* unloaded_klass = check_get_unloaded_klass(accessing_klass, name); | |
| 396 if (unloaded_klass != NULL) { | |
| 397 if (require_local) return NULL; | |
| 398 return unloaded_klass; | |
| 399 } | |
| 400 | |
| 401 Handle loader(THREAD, (oop)NULL); | |
| 402 Handle domain(THREAD, (oop)NULL); | |
| 403 if (accessing_klass != NULL) { | |
| 404 loader = Handle(THREAD, accessing_klass->loader()); | |
| 405 domain = Handle(THREAD, accessing_klass->protection_domain()); | |
| 406 } | |
| 407 | |
| 408 // setup up the proper type to return on OOM | |
| 409 ciKlass* fail_type; | |
| 410 if (sym->byte_at(0) == '[') { | |
| 411 fail_type = _unloaded_ciobjarrayklass; | |
| 412 } else { | |
| 413 fail_type = _unloaded_ciinstance_klass; | |
| 414 } | |
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415 KlassHandle found_klass; |
| 0 | 416 if (!require_local) { |
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417 klassOop kls = SystemDictionary::find_constrained_instance_or_array_klass( |
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418 sym, loader, KILL_COMPILE_ON_FATAL_(fail_type)); |
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419 found_klass = KlassHandle(THREAD, kls); |
| 0 | 420 } else { |
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421 klassOop kls = SystemDictionary::find_instance_or_array_klass( |
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422 sym, loader, domain, KILL_COMPILE_ON_FATAL_(fail_type)); |
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423 found_klass = KlassHandle(THREAD, kls); |
| 0 | 424 } |
| 425 | |
| 426 // If we fail to find an array klass, look again for its element type. | |
| 427 // The element type may be available either locally or via constraints. | |
| 428 // In either case, if we can find the element type in the system dictionary, | |
| 429 // we must build an array type around it. The CI requires array klasses | |
| 430 // to be loaded if their element klasses are loaded, except when memory | |
| 431 // is exhausted. | |
| 432 if (sym->byte_at(0) == '[' && | |
| 433 (sym->byte_at(1) == '[' || sym->byte_at(1) == 'L')) { | |
| 434 // We have an unloaded array. | |
| 435 // Build it on the fly if the element class exists. | |
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436 TempNewSymbol elem_sym = SymbolTable::new_symbol(sym->as_utf8()+1, |
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437 sym->utf8_length()-1, |
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438 KILL_COMPILE_ON_FATAL_(fail_type)); |
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439 |
| 0 | 440 // Get element ciKlass recursively. |
| 441 ciKlass* elem_klass = | |
| 442 get_klass_by_name_impl(accessing_klass, | |
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443 get_symbol(elem_sym), |
| 0 | 444 require_local); |
| 445 if (elem_klass != NULL && elem_klass->is_loaded()) { | |
| 446 // Now make an array for it | |
| 447 return ciObjArrayKlass::make_impl(elem_klass); | |
| 448 } | |
| 449 } | |
| 450 | |
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451 if (found_klass() != NULL) { |
| 0 | 452 // Found it. Build a CI handle. |
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453 return get_object(found_klass())->as_klass(); |
| 0 | 454 } |
| 455 | |
| 456 if (require_local) return NULL; | |
| 457 // Not yet loaded into the VM, or not governed by loader constraints. | |
| 458 // Make a CI representative for it. | |
| 459 return get_unloaded_klass(accessing_klass, name); | |
| 460 } | |
| 461 | |
| 462 // ------------------------------------------------------------------ | |
| 463 // ciEnv::get_klass_by_name | |
| 464 ciKlass* ciEnv::get_klass_by_name(ciKlass* accessing_klass, | |
| 465 ciSymbol* klass_name, | |
| 466 bool require_local) { | |
| 467 GUARDED_VM_ENTRY(return get_klass_by_name_impl(accessing_klass, | |
| 468 klass_name, | |
| 469 require_local);) | |
| 470 } | |
| 471 | |
| 472 // ------------------------------------------------------------------ | |
| 473 // ciEnv::get_klass_by_index_impl | |
| 474 // | |
| 475 // Implementation of get_klass_by_index. | |
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476 ciKlass* ciEnv::get_klass_by_index_impl(constantPoolHandle cpool, |
| 0 | 477 int index, |
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478 bool& is_accessible, |
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479 ciInstanceKlass* accessor) { |
| 0 | 480 EXCEPTION_CONTEXT; |
| 481 KlassHandle klass (THREAD, constantPoolOopDesc::klass_at_if_loaded(cpool, index)); | |
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482 Symbol* klass_name = NULL; |
| 0 | 483 if (klass.is_null()) { |
| 484 // The klass has not been inserted into the constant pool. | |
| 485 // Try to look it up by name. | |
| 486 { | |
| 487 // We have to lock the cpool to keep the oop from being resolved | |
| 488 // while we are accessing it. | |
| 489 ObjectLocker ol(cpool, THREAD); | |
| 490 | |
| 491 constantTag tag = cpool->tag_at(index); | |
| 492 if (tag.is_klass()) { | |
| 493 // The klass has been inserted into the constant pool | |
| 494 // very recently. | |
| 495 klass = KlassHandle(THREAD, cpool->resolved_klass_at(index)); | |
| 496 } else if (tag.is_symbol()) { | |
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497 klass_name = cpool->symbol_at(index); |
| 0 | 498 } else { |
| 499 assert(cpool->tag_at(index).is_unresolved_klass(), "wrong tag"); | |
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500 klass_name = cpool->unresolved_klass_at(index); |
| 0 | 501 } |
| 502 } | |
| 503 } | |
| 504 | |
| 505 if (klass.is_null()) { | |
| 506 // Not found in constant pool. Use the name to do the lookup. | |
| 507 ciKlass* k = get_klass_by_name_impl(accessor, | |
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508 get_symbol(klass_name), |
| 0 | 509 false); |
| 510 // Calculate accessibility the hard way. | |
| 511 if (!k->is_loaded()) { | |
| 512 is_accessible = false; | |
| 513 } else if (k->loader() != accessor->loader() && | |
| 514 get_klass_by_name_impl(accessor, k->name(), true) == NULL) { | |
| 515 // Loaded only remotely. Not linked yet. | |
| 516 is_accessible = false; | |
| 517 } else { | |
| 518 // Linked locally, and we must also check public/private, etc. | |
| 519 is_accessible = check_klass_accessibility(accessor, k->get_klassOop()); | |
| 520 } | |
| 521 return k; | |
| 522 } | |
| 523 | |
| 524 // Check for prior unloaded klass. The SystemDictionary's answers | |
| 525 // can vary over time but the compiler needs consistency. | |
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526 ciSymbol* name = get_symbol(klass()->klass_part()->name()); |
| 0 | 527 ciKlass* unloaded_klass = check_get_unloaded_klass(accessor, name); |
| 528 if (unloaded_klass != NULL) { | |
| 529 is_accessible = false; | |
| 530 return unloaded_klass; | |
| 531 } | |
| 532 | |
| 533 // It is known to be accessible, since it was found in the constant pool. | |
| 534 is_accessible = true; | |
| 535 return get_object(klass())->as_klass(); | |
| 536 } | |
| 537 | |
| 538 // ------------------------------------------------------------------ | |
| 539 // ciEnv::get_klass_by_index | |
| 540 // | |
| 541 // Get a klass from the constant pool. | |
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542 ciKlass* ciEnv::get_klass_by_index(constantPoolHandle cpool, |
| 0 | 543 int index, |
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544 bool& is_accessible, |
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545 ciInstanceKlass* accessor) { |
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546 GUARDED_VM_ENTRY(return get_klass_by_index_impl(cpool, index, is_accessible, accessor);) |
| 0 | 547 } |
| 548 | |
| 549 // ------------------------------------------------------------------ | |
| 550 // ciEnv::get_constant_by_index_impl | |
| 551 // | |
| 552 // Implementation of get_constant_by_index(). | |
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553 ciConstant ciEnv::get_constant_by_index_impl(constantPoolHandle cpool, |
| 1602 | 554 int pool_index, int cache_index, |
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555 ciInstanceKlass* accessor) { |
| 1602 | 556 bool ignore_will_link; |
| 0 | 557 EXCEPTION_CONTEXT; |
| 1602 | 558 int index = pool_index; |
| 559 if (cache_index >= 0) { | |
| 560 assert(index < 0, "only one kind of index at a time"); | |
| 561 ConstantPoolCacheEntry* cpc_entry = cpool->cache()->entry_at(cache_index); | |
| 562 index = cpc_entry->constant_pool_index(); | |
| 563 oop obj = cpc_entry->f1(); | |
| 564 if (obj != NULL) { | |
| 565 assert(obj->is_instance(), "must be an instance"); | |
| 566 ciObject* ciobj = get_object(obj); | |
| 567 return ciConstant(T_OBJECT, ciobj); | |
| 568 } | |
| 569 } | |
| 0 | 570 constantTag tag = cpool->tag_at(index); |
| 571 if (tag.is_int()) { | |
| 572 return ciConstant(T_INT, (jint)cpool->int_at(index)); | |
| 573 } else if (tag.is_long()) { | |
| 574 return ciConstant((jlong)cpool->long_at(index)); | |
| 575 } else if (tag.is_float()) { | |
| 576 return ciConstant((jfloat)cpool->float_at(index)); | |
| 577 } else if (tag.is_double()) { | |
| 578 return ciConstant((jdouble)cpool->double_at(index)); | |
| 579 } else if (tag.is_string() || tag.is_unresolved_string()) { | |
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580 oop string = NULL; |
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581 if (cpool->is_pseudo_string_at(index)) { |
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582 string = cpool->pseudo_string_at(index); |
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583 } else { |
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584 string = cpool->string_at(index, THREAD); |
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585 if (HAS_PENDING_EXCEPTION) { |
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586 CLEAR_PENDING_EXCEPTION; |
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587 record_out_of_memory_failure(); |
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588 return ciConstant(); |
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589 } |
| 0 | 590 } |
| 591 ciObject* constant = get_object(string); | |
| 592 assert (constant->is_instance(), "must be an instance, or not? "); | |
| 593 return ciConstant(T_OBJECT, constant); | |
| 594 } else if (tag.is_klass() || tag.is_unresolved_klass()) { | |
| 595 // 4881222: allow ldc to take a class type | |
| 1602 | 596 ciKlass* klass = get_klass_by_index_impl(cpool, index, ignore_will_link, accessor); |
| 0 | 597 if (HAS_PENDING_EXCEPTION) { |
| 598 CLEAR_PENDING_EXCEPTION; | |
| 599 record_out_of_memory_failure(); | |
| 600 return ciConstant(); | |
| 601 } | |
| 602 assert (klass->is_instance_klass() || klass->is_array_klass(), | |
| 603 "must be an instance or array klass "); | |
| 1602 | 604 return ciConstant(T_OBJECT, klass->java_mirror()); |
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605 } else if (tag.is_object()) { |
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606 oop obj = cpool->object_at(index); |
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607 assert(obj->is_instance(), "must be an instance"); |
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608 ciObject* ciobj = get_object(obj); |
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609 return ciConstant(T_OBJECT, ciobj); |
| 1602 | 610 } else if (tag.is_method_type()) { |
| 611 // must execute Java code to link this CP entry into cache[i].f1 | |
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612 ciSymbol* signature = get_symbol(cpool->method_type_signature_at(index)); |
| 1602 | 613 ciObject* ciobj = get_unloaded_method_type_constant(signature); |
| 614 return ciConstant(T_OBJECT, ciobj); | |
| 615 } else if (tag.is_method_handle()) { | |
| 616 // must execute Java code to link this CP entry into cache[i].f1 | |
| 617 int ref_kind = cpool->method_handle_ref_kind_at(index); | |
| 618 int callee_index = cpool->method_handle_klass_index_at(index); | |
| 619 ciKlass* callee = get_klass_by_index_impl(cpool, callee_index, ignore_will_link, accessor); | |
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620 ciSymbol* name = get_symbol(cpool->method_handle_name_ref_at(index)); |
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621 ciSymbol* signature = get_symbol(cpool->method_handle_signature_ref_at(index)); |
| 1602 | 622 ciObject* ciobj = get_unloaded_method_handle_constant(callee, name, signature, ref_kind); |
| 623 return ciConstant(T_OBJECT, ciobj); | |
| 0 | 624 } else { |
| 625 ShouldNotReachHere(); | |
| 626 return ciConstant(); | |
| 627 } | |
| 628 } | |
| 629 | |
| 630 // ------------------------------------------------------------------ | |
| 631 // ciEnv::get_constant_by_index | |
| 632 // | |
| 633 // Pull a constant out of the constant pool. How appropriate. | |
| 634 // | |
| 635 // Implementation note: this query is currently in no way cached. | |
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636 ciConstant ciEnv::get_constant_by_index(constantPoolHandle cpool, |
| 1602 | 637 int pool_index, int cache_index, |
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638 ciInstanceKlass* accessor) { |
| 1602 | 639 GUARDED_VM_ENTRY(return get_constant_by_index_impl(cpool, pool_index, cache_index, accessor);) |
| 0 | 640 } |
| 641 | |
| 642 // ------------------------------------------------------------------ | |
| 643 // ciEnv::get_field_by_index_impl | |
| 644 // | |
| 645 // Implementation of get_field_by_index. | |
| 646 // | |
| 647 // Implementation note: the results of field lookups are cached | |
| 648 // in the accessor klass. | |
| 649 ciField* ciEnv::get_field_by_index_impl(ciInstanceKlass* accessor, | |
| 650 int index) { | |
| 651 ciConstantPoolCache* cache = accessor->field_cache(); | |
| 652 if (cache == NULL) { | |
| 653 ciField* field = new (arena()) ciField(accessor, index); | |
| 654 return field; | |
| 655 } else { | |
| 656 ciField* field = (ciField*)cache->get(index); | |
| 657 if (field == NULL) { | |
| 658 field = new (arena()) ciField(accessor, index); | |
| 659 cache->insert(index, field); | |
| 660 } | |
| 661 return field; | |
| 662 } | |
| 663 } | |
| 664 | |
| 665 // ------------------------------------------------------------------ | |
| 666 // ciEnv::get_field_by_index | |
| 667 // | |
| 668 // Get a field by index from a klass's constant pool. | |
| 669 ciField* ciEnv::get_field_by_index(ciInstanceKlass* accessor, | |
| 670 int index) { | |
| 671 GUARDED_VM_ENTRY(return get_field_by_index_impl(accessor, index);) | |
| 672 } | |
| 673 | |
| 674 // ------------------------------------------------------------------ | |
| 675 // ciEnv::lookup_method | |
| 676 // | |
| 677 // Perform an appropriate method lookup based on accessor, holder, | |
| 678 // name, signature, and bytecode. | |
| 679 methodOop ciEnv::lookup_method(instanceKlass* accessor, | |
| 680 instanceKlass* holder, | |
|
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681 Symbol* name, |
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682 Symbol* sig, |
| 0 | 683 Bytecodes::Code bc) { |
| 684 EXCEPTION_CONTEXT; | |
| 685 KlassHandle h_accessor(THREAD, accessor); | |
| 686 KlassHandle h_holder(THREAD, holder); | |
| 687 LinkResolver::check_klass_accessability(h_accessor, h_holder, KILL_COMPILE_ON_FATAL_(NULL)); | |
| 688 methodHandle dest_method; | |
| 689 switch (bc) { | |
| 690 case Bytecodes::_invokestatic: | |
| 691 dest_method = | |
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692 LinkResolver::resolve_static_call_or_null(h_holder, name, sig, h_accessor); |
| 0 | 693 break; |
| 694 case Bytecodes::_invokespecial: | |
| 695 dest_method = | |
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696 LinkResolver::resolve_special_call_or_null(h_holder, name, sig, h_accessor); |
| 0 | 697 break; |
| 698 case Bytecodes::_invokeinterface: | |
| 699 dest_method = | |
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700 LinkResolver::linktime_resolve_interface_method_or_null(h_holder, name, sig, |
| 0 | 701 h_accessor, true); |
| 702 break; | |
| 703 case Bytecodes::_invokevirtual: | |
| 704 dest_method = | |
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705 LinkResolver::linktime_resolve_virtual_method_or_null(h_holder, name, sig, |
| 0 | 706 h_accessor, true); |
| 707 break; | |
| 708 default: ShouldNotReachHere(); | |
| 709 } | |
| 710 | |
| 711 return dest_method(); | |
| 712 } | |
| 713 | |
| 714 | |
| 715 // ------------------------------------------------------------------ | |
| 716 // ciEnv::get_method_by_index_impl | |
|
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717 ciMethod* ciEnv::get_method_by_index_impl(constantPoolHandle cpool, |
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718 int index, Bytecodes::Code bc, |
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719 ciInstanceKlass* accessor) { |
| 0 | 720 int holder_index = cpool->klass_ref_index_at(index); |
| 721 bool holder_is_accessible; | |
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722 ciKlass* holder = get_klass_by_index_impl(cpool, holder_index, holder_is_accessible, accessor); |
| 0 | 723 ciInstanceKlass* declared_holder = get_instance_klass_for_declared_method_holder(holder); |
| 724 | |
| 725 // Get the method's name and signature. | |
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726 Symbol* name_sym = cpool->name_ref_at(index); |
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727 Symbol* sig_sym = cpool->signature_ref_at(index); |
| 0 | 728 |
| 729 if (holder_is_accessible) { // Our declared holder is loaded. | |
| 730 instanceKlass* lookup = declared_holder->get_instanceKlass(); | |
| 731 methodOop m = lookup_method(accessor->get_instanceKlass(), lookup, name_sym, sig_sym, bc); | |
| 732 if (m != NULL) { | |
| 733 // We found the method. | |
| 734 return get_object(m)->as_method(); | |
| 735 } | |
| 736 } | |
| 737 | |
| 738 // Either the declared holder was not loaded, or the method could | |
| 739 // not be found. Create a dummy ciMethod to represent the failed | |
| 740 // lookup. | |
| 741 | |
| 742 return get_unloaded_method(declared_holder, | |
|
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743 get_symbol(name_sym), |
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744 get_symbol(sig_sym)); |
| 0 | 745 } |
| 746 | |
| 747 | |
| 748 // ------------------------------------------------------------------ | |
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749 // ciEnv::get_fake_invokedynamic_method_impl |
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750 ciMethod* ciEnv::get_fake_invokedynamic_method_impl(constantPoolHandle cpool, |
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751 int index, Bytecodes::Code bc) { |
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752 // Compare the following logic with InterpreterRuntime::resolve_invokedynamic. |
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753 assert(bc == Bytecodes::_invokedynamic, "must be invokedynamic"); |
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754 |
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755 bool is_resolved = cpool->cache()->main_entry_at(index)->is_resolved(bc); |
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756 if (is_resolved && (oop) cpool->cache()->secondary_entry_at(index)->f1() == NULL) |
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757 // FIXME: code generation could allow for null (unlinked) call site |
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758 is_resolved = false; |
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759 |
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760 // Call site might not be resolved yet. We could create a real invoker method from the |
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761 // compiler, but it is simpler to stop the code path here with an unlinked method. |
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762 if (!is_resolved) { |
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763 ciInstanceKlass* mh_klass = get_object(SystemDictionary::MethodHandle_klass())->as_instance_klass(); |
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764 ciSymbol* sig_sym = get_symbol(cpool->signature_ref_at(index)); |
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765 return get_unloaded_method(mh_klass, ciSymbol::invokeExact_name(), sig_sym); |
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766 } |
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767 |
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768 // Get the invoker methodOop from the constant pool. |
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769 oop f1_value = cpool->cache()->main_entry_at(index)->f1(); |
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770 methodOop signature_invoker = methodOop(f1_value); |
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771 assert(signature_invoker != NULL && signature_invoker->is_method() && signature_invoker->is_method_handle_invoke(), |
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772 "correct result from LinkResolver::resolve_invokedynamic"); |
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773 |
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774 return get_object(signature_invoker)->as_method(); |
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775 } |
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776 |
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777 |
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778 // ------------------------------------------------------------------ |
| 0 | 779 // ciEnv::get_instance_klass_for_declared_method_holder |
| 780 ciInstanceKlass* ciEnv::get_instance_klass_for_declared_method_holder(ciKlass* method_holder) { | |
| 781 // For the case of <array>.clone(), the method holder can be a ciArrayKlass | |
| 782 // instead of a ciInstanceKlass. For that case simply pretend that the | |
| 783 // declared holder is Object.clone since that's where the call will bottom out. | |
| 784 // A more correct fix would trickle out through many interfaces in CI, | |
| 785 // requiring ciInstanceKlass* to become ciKlass* and many more places would | |
| 786 // require checks to make sure the expected type was found. Given that this | |
| 787 // only occurs for clone() the more extensive fix seems like overkill so | |
| 788 // instead we simply smear the array type into Object. | |
| 789 if (method_holder->is_instance_klass()) { | |
| 790 return method_holder->as_instance_klass(); | |
| 791 } else if (method_holder->is_array_klass()) { | |
| 792 return current()->Object_klass(); | |
| 793 } else { | |
| 794 ShouldNotReachHere(); | |
| 795 } | |
| 796 return NULL; | |
| 797 } | |
| 798 | |
| 799 | |
| 800 // ------------------------------------------------------------------ | |
| 801 // ciEnv::get_method_by_index | |
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802 ciMethod* ciEnv::get_method_by_index(constantPoolHandle cpool, |
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803 int index, Bytecodes::Code bc, |
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804 ciInstanceKlass* accessor) { |
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805 if (bc == Bytecodes::_invokedynamic) { |
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806 GUARDED_VM_ENTRY(return get_fake_invokedynamic_method_impl(cpool, index, bc);) |
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807 } else { |
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808 GUARDED_VM_ENTRY(return get_method_by_index_impl(cpool, index, bc, accessor);) |
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809 } |
| 0 | 810 } |
| 811 | |
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812 |
| 0 | 813 // ------------------------------------------------------------------ |
| 814 // ciEnv::name_buffer | |
| 815 char *ciEnv::name_buffer(int req_len) { | |
| 816 if (_name_buffer_len < req_len) { | |
| 817 if (_name_buffer == NULL) { | |
| 818 _name_buffer = (char*)arena()->Amalloc(sizeof(char)*req_len); | |
| 819 _name_buffer_len = req_len; | |
| 820 } else { | |
| 821 _name_buffer = | |
| 822 (char*)arena()->Arealloc(_name_buffer, _name_buffer_len, req_len); | |
| 823 _name_buffer_len = req_len; | |
| 824 } | |
| 825 } | |
| 826 return _name_buffer; | |
| 827 } | |
| 828 | |
| 829 // ------------------------------------------------------------------ | |
| 830 // ciEnv::is_in_vm | |
| 831 bool ciEnv::is_in_vm() { | |
| 832 return JavaThread::current()->thread_state() == _thread_in_vm; | |
| 833 } | |
| 834 | |
| 835 bool ciEnv::system_dictionary_modification_counter_changed() { | |
| 836 return _system_dictionary_modification_counter != SystemDictionary::number_of_modifications(); | |
| 837 } | |
| 838 | |
| 839 // ------------------------------------------------------------------ | |
| 840 // ciEnv::check_for_system_dictionary_modification | |
| 841 // Check for changes to the system dictionary during compilation | |
| 842 // class loads, evolution, breakpoints | |
| 843 void ciEnv::check_for_system_dictionary_modification(ciMethod* target) { | |
| 844 if (failing()) return; // no need for further checks | |
| 845 | |
| 846 // Dependencies must be checked when the system dictionary changes. | |
| 847 // If logging is enabled all violated dependences will be recorded in | |
| 848 // the log. In debug mode check dependencies even if the system | |
| 849 // dictionary hasn't changed to verify that no invalid dependencies | |
| 850 // were inserted. Any violated dependences in this case are dumped to | |
| 851 // the tty. | |
| 852 | |
| 853 bool counter_changed = system_dictionary_modification_counter_changed(); | |
| 854 bool test_deps = counter_changed; | |
| 855 DEBUG_ONLY(test_deps = true); | |
| 856 if (!test_deps) return; | |
| 857 | |
| 858 bool print_failures = false; | |
| 859 DEBUG_ONLY(print_failures = !counter_changed); | |
| 860 | |
| 861 bool keep_going = (print_failures || xtty != NULL); | |
| 862 | |
| 863 int violated = 0; | |
| 864 | |
| 865 for (Dependencies::DepStream deps(dependencies()); deps.next(); ) { | |
| 866 klassOop witness = deps.check_dependency(); | |
| 867 if (witness != NULL) { | |
| 868 ++violated; | |
| 869 if (print_failures) deps.print_dependency(witness, /*verbose=*/ true); | |
| 870 // If there's no log and we're not sanity-checking, we're done. | |
| 871 if (!keep_going) break; | |
| 872 } | |
| 873 } | |
| 874 | |
| 875 if (violated != 0) { | |
| 876 assert(counter_changed, "failed dependencies, but counter didn't change"); | |
| 877 record_failure("concurrent class loading"); | |
| 878 } | |
| 879 } | |
| 880 | |
| 881 // ------------------------------------------------------------------ | |
| 882 // ciEnv::register_method | |
| 883 void ciEnv::register_method(ciMethod* target, | |
| 884 int entry_bci, | |
| 885 CodeOffsets* offsets, | |
| 886 int orig_pc_offset, | |
| 887 CodeBuffer* code_buffer, | |
| 888 int frame_words, | |
| 889 OopMapSet* oop_map_set, | |
| 890 ExceptionHandlerTable* handler_table, | |
| 891 ImplicitExceptionTable* inc_table, | |
| 892 AbstractCompiler* compiler, | |
| 893 int comp_level, | |
| 894 bool has_debug_info, | |
| 895 bool has_unsafe_access) { | |
| 896 VM_ENTRY_MARK; | |
| 897 nmethod* nm = NULL; | |
| 898 { | |
| 899 // To prevent compile queue updates. | |
| 900 MutexLocker locker(MethodCompileQueue_lock, THREAD); | |
| 901 | |
| 902 // Prevent SystemDictionary::add_to_hierarchy from running | |
| 903 // and invalidating our dependencies until we install this method. | |
| 904 MutexLocker ml(Compile_lock); | |
| 905 | |
|
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906 // Change in Jvmti state may invalidate compilation. |
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907 if (!failing() && |
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908 ( (!jvmti_can_hotswap_or_post_breakpoint() && |
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909 JvmtiExport::can_hotswap_or_post_breakpoint()) || |
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910 (!jvmti_can_access_local_variables() && |
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911 JvmtiExport::can_access_local_variables()) || |
|
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912 (!jvmti_can_post_on_exceptions() && |
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913 JvmtiExport::can_post_on_exceptions()) )) { |
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914 record_failure("Jvmti state change invalidated dependencies"); |
| 0 | 915 } |
| 916 | |
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917 // Change in DTrace flags may invalidate compilation. |
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918 if (!failing() && |
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919 ( (!dtrace_extended_probes() && ExtendedDTraceProbes) || |
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920 (!dtrace_method_probes() && DTraceMethodProbes) || |
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921 (!dtrace_alloc_probes() && DTraceAllocProbes) )) { |
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922 record_failure("DTrace flags change invalidated dependencies"); |
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923 } |
| 0 | 924 |
|
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925 if (!failing()) { |
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926 if (log() != NULL) { |
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927 // Log the dependencies which this compilation declares. |
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928 dependencies()->log_all_dependencies(); |
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929 } |
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930 |
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931 // Encode the dependencies now, so we can check them right away. |
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932 dependencies()->encode_content_bytes(); |
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933 |
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934 // Check for {class loads, evolution, breakpoints} during compilation |
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935 check_for_system_dictionary_modification(target); |
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936 } |
| 0 | 937 |
| 938 methodHandle method(THREAD, target->get_methodOop()); | |
| 939 | |
| 940 if (failing()) { | |
| 941 // While not a true deoptimization, it is a preemptive decompile. | |
| 942 methodDataOop mdo = method()->method_data(); | |
| 943 if (mdo != NULL) { | |
| 944 mdo->inc_decompile_count(); | |
| 945 } | |
| 946 | |
| 947 // All buffers in the CodeBuffer are allocated in the CodeCache. | |
| 948 // If the code buffer is created on each compile attempt | |
| 949 // as in C2, then it must be freed. | |
| 950 code_buffer->free_blob(); | |
| 951 return; | |
| 952 } | |
| 953 | |
| 954 assert(offsets->value(CodeOffsets::Deopt) != -1, "must have deopt entry"); | |
| 955 assert(offsets->value(CodeOffsets::Exceptions) != -1, "must have exception entry"); | |
| 956 | |
| 957 nm = nmethod::new_nmethod(method, | |
| 958 compile_id(), | |
| 959 entry_bci, | |
| 960 offsets, | |
| 961 orig_pc_offset, | |
| 962 debug_info(), dependencies(), code_buffer, | |
| 963 frame_words, oop_map_set, | |
| 964 handler_table, inc_table, | |
| 965 compiler, comp_level); | |
| 966 | |
| 967 // Free codeBlobs | |
| 968 code_buffer->free_blob(); | |
| 969 | |
| 970 // stress test 6243940 by immediately making the method | |
| 971 // non-entrant behind the system's back. This has serious | |
| 972 // side effects on the code cache and is not meant for | |
| 973 // general stress testing | |
| 974 if (nm != NULL && StressNonEntrant) { | |
| 975 MutexLockerEx pl(Patching_lock, Mutex::_no_safepoint_check_flag); | |
| 976 NativeJump::patch_verified_entry(nm->entry_point(), nm->verified_entry_point(), | |
| 977 SharedRuntime::get_handle_wrong_method_stub()); | |
| 978 } | |
| 979 | |
| 980 if (nm == NULL) { | |
| 981 // The CodeCache is full. Print out warning and disable compilation. | |
| 982 record_failure("code cache is full"); | |
| 1202 | 983 { |
| 984 MutexUnlocker ml(Compile_lock); | |
| 985 MutexUnlocker locker(MethodCompileQueue_lock); | |
| 986 CompileBroker::handle_full_code_cache(); | |
| 0 | 987 } |
| 988 } else { | |
| 989 NOT_PRODUCT(nm->set_has_debug_info(has_debug_info); ) | |
| 990 nm->set_has_unsafe_access(has_unsafe_access); | |
| 991 | |
| 992 // Record successful registration. | |
| 993 // (Put nm into the task handle *before* publishing to the Java heap.) | |
| 994 if (task() != NULL) task()->set_code(nm); | |
| 995 | |
| 996 if (entry_bci == InvocationEntryBci) { | |
| 1783 | 997 if (TieredCompilation) { |
| 998 // If there is an old version we're done with it | |
| 999 nmethod* old = method->code(); | |
| 1000 if (TraceMethodReplacement && old != NULL) { | |
| 1001 ResourceMark rm; | |
| 1002 char *method_name = method->name_and_sig_as_C_string(); | |
| 1003 tty->print_cr("Replacing method %s", method_name); | |
| 1004 } | |
| 1005 if (old != NULL ) { | |
| 1006 old->make_not_entrant(); | |
| 1007 } | |
| 0 | 1008 } |
| 1009 if (TraceNMethodInstalls ) { | |
| 1010 ResourceMark rm; | |
| 1011 char *method_name = method->name_and_sig_as_C_string(); | |
| 1012 ttyLocker ttyl; | |
| 1013 tty->print_cr("Installing method (%d) %s ", | |
| 1014 comp_level, | |
| 1015 method_name); | |
| 1016 } | |
| 1017 // Allow the code to be executed | |
| 1018 method->set_code(method, nm); | |
| 1019 } else { | |
| 1020 if (TraceNMethodInstalls ) { | |
| 1021 ResourceMark rm; | |
| 1022 char *method_name = method->name_and_sig_as_C_string(); | |
| 1023 ttyLocker ttyl; | |
| 1024 tty->print_cr("Installing osr method (%d) %s @ %d", | |
| 1025 comp_level, | |
| 1026 method_name, | |
| 1027 entry_bci); | |
| 1028 } | |
| 1029 instanceKlass::cast(method->method_holder())->add_osr_nmethod(nm); | |
| 1030 | |
| 1031 } | |
| 1032 } | |
| 1033 } | |
| 1034 // JVMTI -- compiled method notification (must be done outside lock) | |
| 1035 if (nm != NULL) { | |
| 1036 nm->post_compiled_method_load_event(); | |
| 1037 } | |
| 1038 | |
| 1039 } | |
| 1040 | |
| 1041 | |
| 1042 // ------------------------------------------------------------------ | |
| 1043 // ciEnv::find_system_klass | |
| 1044 ciKlass* ciEnv::find_system_klass(ciSymbol* klass_name) { | |
| 1045 VM_ENTRY_MARK; | |
| 1046 return get_klass_by_name_impl(NULL, klass_name, false); | |
| 1047 } | |
| 1048 | |
| 1049 // ------------------------------------------------------------------ | |
| 1050 // ciEnv::comp_level | |
| 1051 int ciEnv::comp_level() { | |
| 1783 | 1052 if (task() == NULL) return CompLevel_highest_tier; |
| 0 | 1053 return task()->comp_level(); |
| 1054 } | |
| 1055 | |
| 1056 // ------------------------------------------------------------------ | |
| 1057 // ciEnv::compile_id | |
| 1058 uint ciEnv::compile_id() { | |
| 1059 if (task() == NULL) return 0; | |
| 1060 return task()->compile_id(); | |
| 1061 } | |
| 1062 | |
| 1063 // ------------------------------------------------------------------ | |
| 1064 // ciEnv::notice_inlined_method() | |
| 1065 void ciEnv::notice_inlined_method(ciMethod* method) { | |
| 1066 _num_inlined_bytecodes += method->code_size(); | |
| 1067 } | |
| 1068 | |
| 1069 // ------------------------------------------------------------------ | |
| 1070 // ciEnv::num_inlined_bytecodes() | |
| 1071 int ciEnv::num_inlined_bytecodes() const { | |
| 1072 return _num_inlined_bytecodes; | |
| 1073 } | |
| 1074 | |
| 1075 // ------------------------------------------------------------------ | |
| 1076 // ciEnv::record_failure() | |
| 1077 void ciEnv::record_failure(const char* reason) { | |
| 1078 if (log() != NULL) { | |
| 1079 log()->elem("failure reason='%s'", reason); | |
| 1080 } | |
| 1081 if (_failure_reason == NULL) { | |
| 1082 // Record the first failure reason. | |
| 1083 _failure_reason = reason; | |
| 1084 } | |
| 1085 } | |
| 1086 | |
| 1087 // ------------------------------------------------------------------ | |
| 1088 // ciEnv::record_method_not_compilable() | |
| 1089 void ciEnv::record_method_not_compilable(const char* reason, bool all_tiers) { | |
| 1090 int new_compilable = | |
| 1091 all_tiers ? MethodCompilable_never : MethodCompilable_not_at_tier ; | |
| 1092 | |
| 1093 // Only note transitions to a worse state | |
| 1094 if (new_compilable > _compilable) { | |
| 1095 if (log() != NULL) { | |
| 1096 if (all_tiers) { | |
| 1097 log()->elem("method_not_compilable"); | |
| 1098 } else { | |
| 1099 log()->elem("method_not_compilable_at_tier"); | |
| 1100 } | |
| 1101 } | |
| 1102 _compilable = new_compilable; | |
| 1103 | |
| 1104 // Reset failure reason; this one is more important. | |
| 1105 _failure_reason = NULL; | |
| 1106 record_failure(reason); | |
| 1107 } | |
| 1108 } | |
| 1109 | |
| 1110 // ------------------------------------------------------------------ | |
| 1111 // ciEnv::record_out_of_memory_failure() | |
| 1112 void ciEnv::record_out_of_memory_failure() { | |
| 1113 // If memory is low, we stop compiling methods. | |
| 1114 record_method_not_compilable("out of memory"); | |
| 1115 } |