Mercurial > hg > truffle
annotate src/share/vm/ci/ciEnv.cpp @ 4138:82af018d61db
Merge fixes.
| author | Thomas Wuerthinger <thomas.wuerthinger@oracle.com> |
|---|---|
| date | Sat, 17 Dec 2011 22:03:44 +0100 |
| parents | 04b9a2566eec |
| children | 957c266d8bc5 |
| rev | line source |
|---|---|
| 0 | 1 /* |
|
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2 * Copyright (c) 1999, 2011, 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" | |
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53 #include "prims/methodHandleWalk.hpp" |
| 1972 | 54 #include "runtime/init.hpp" |
| 55 #include "runtime/reflection.hpp" | |
| 56 #include "runtime/sharedRuntime.hpp" | |
| 57 #include "utilities/dtrace.hpp" | |
| 58 #ifdef COMPILER1 | |
| 59 #include "c1/c1_Runtime1.hpp" | |
| 60 #endif | |
| 61 #ifdef COMPILER2 | |
| 62 #include "opto/runtime.hpp" | |
| 63 #endif | |
| 0 | 64 |
| 65 // ciEnv | |
| 66 // | |
| 67 // This class is the top level broker for requests from the compiler | |
| 68 // to the VM. | |
| 69 | |
| 70 ciObject* ciEnv::_null_object_instance; | |
| 71 ciMethodKlass* ciEnv::_method_klass_instance; | |
| 72 ciKlassKlass* ciEnv::_klass_klass_instance; | |
| 73 ciInstanceKlassKlass* ciEnv::_instance_klass_klass_instance; | |
| 74 ciTypeArrayKlassKlass* ciEnv::_type_array_klass_klass_instance; | |
| 75 ciObjArrayKlassKlass* ciEnv::_obj_array_klass_klass_instance; | |
| 76 | |
| 1142 | 77 #define WK_KLASS_DEFN(name, ignore_s, ignore_o) ciInstanceKlass* ciEnv::_##name = NULL; |
| 78 WK_KLASSES_DO(WK_KLASS_DEFN) | |
| 79 #undef WK_KLASS_DEFN | |
| 0 | 80 |
| 81 ciSymbol* ciEnv::_unloaded_cisymbol = NULL; | |
| 82 ciInstanceKlass* ciEnv::_unloaded_ciinstance_klass = NULL; | |
| 83 ciObjArrayKlass* ciEnv::_unloaded_ciobjarrayklass = NULL; | |
| 84 | |
| 85 jobject ciEnv::_ArrayIndexOutOfBoundsException_handle = NULL; | |
| 86 jobject ciEnv::_ArrayStoreException_handle = NULL; | |
| 87 jobject ciEnv::_ClassCastException_handle = NULL; | |
| 88 | |
| 89 #ifndef PRODUCT | |
| 90 static bool firstEnv = true; | |
| 91 #endif /* PRODUCT */ | |
| 92 | |
| 93 // ------------------------------------------------------------------ | |
| 94 // ciEnv::ciEnv | |
| 95 ciEnv::ciEnv(CompileTask* task, int system_dictionary_modification_counter) { | |
| 96 VM_ENTRY_MARK; | |
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97 CompilerThread* compiler_thread = CompilerThread::current(); |
| 0 | 98 // Set up ciEnv::current immediately, for the sake of ciObjectFactory, etc. |
| 99 thread->set_env(this); | |
| 100 assert(ciEnv::current() == this, "sanity"); | |
| 101 | |
| 102 _oop_recorder = NULL; | |
| 103 _debug_info = NULL; | |
| 104 _dependencies = NULL; | |
| 105 _failure_reason = NULL; | |
| 106 _compilable = MethodCompilable; | |
| 107 _break_at_compile = false; | |
| 108 _compiler_data = NULL; | |
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109 //#ifndef PRODUCT |
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110 // assert(!firstEnv, "not initialized properly"); |
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111 //#endif /* !PRODUCT */ |
| 0 | 112 |
| 113 _system_dictionary_modification_counter = system_dictionary_modification_counter; | |
| 114 _num_inlined_bytecodes = 0; | |
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115 assert(task == NULL || compiler_thread->task() == task, "sanity"); |
| 0 | 116 _task = task; |
| 117 _log = NULL; | |
| 118 | |
| 119 // Temporary buffer for creating symbols and such. | |
| 120 _name_buffer = NULL; | |
| 121 _name_buffer_len = 0; | |
| 122 | |
| 123 _arena = &_ciEnv_arena; | |
| 124 _factory = new (_arena) ciObjectFactory(_arena, 128); | |
| 125 | |
| 126 // Preload commonly referenced system ciObjects. | |
| 127 | |
| 128 // During VM initialization, these instances have not yet been created. | |
| 129 // Assertions ensure that these instances are not accessed before | |
| 130 // their initialization. | |
| 131 | |
| 132 assert(Universe::is_fully_initialized(), "should be complete"); | |
| 133 | |
| 134 oop o = Universe::null_ptr_exception_instance(); | |
| 135 assert(o != NULL, "should have been initialized"); | |
| 136 _NullPointerException_instance = get_object(o)->as_instance(); | |
| 137 o = Universe::arithmetic_exception_instance(); | |
| 138 assert(o != NULL, "should have been initialized"); | |
| 139 _ArithmeticException_instance = get_object(o)->as_instance(); | |
| 140 | |
| 141 _ArrayIndexOutOfBoundsException_instance = NULL; | |
| 142 _ArrayStoreException_instance = NULL; | |
| 143 _ClassCastException_instance = NULL; | |
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144 _the_null_string = NULL; |
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145 _the_min_jint_string = NULL; |
| 0 | 146 } |
| 147 | |
| 148 ciEnv::ciEnv(Arena* arena) { | |
| 149 ASSERT_IN_VM; | |
| 150 | |
| 151 // Set up ciEnv::current immediately, for the sake of ciObjectFactory, etc. | |
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152 JavaThread* current_thread = JavaThread::current(); |
| 0 | 153 assert(current_thread->env() == NULL, "must be"); |
| 154 current_thread->set_env(this); | |
| 155 assert(ciEnv::current() == this, "sanity"); | |
| 156 | |
| 157 _oop_recorder = NULL; | |
| 158 _debug_info = NULL; | |
| 159 _dependencies = NULL; | |
| 160 _failure_reason = NULL; | |
| 161 _compilable = MethodCompilable_never; | |
| 162 _break_at_compile = false; | |
| 163 _compiler_data = NULL; | |
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164 //#ifndef PRODUCT |
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165 // assert(firstEnv, "must be first"); |
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166 // firstEnv = false; |
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167 //#endif /* !PRODUCT */ |
| 0 | 168 |
| 169 _system_dictionary_modification_counter = 0; | |
| 170 _num_inlined_bytecodes = 0; | |
| 171 _task = NULL; | |
| 172 _log = NULL; | |
| 173 | |
| 174 // Temporary buffer for creating symbols and such. | |
| 175 _name_buffer = NULL; | |
| 176 _name_buffer_len = 0; | |
| 177 | |
| 178 _arena = arena; | |
| 179 _factory = new (_arena) ciObjectFactory(_arena, 128); | |
| 180 | |
| 181 // Preload commonly referenced system ciObjects. | |
| 182 | |
| 183 // During VM initialization, these instances have not yet been created. | |
| 184 // Assertions ensure that these instances are not accessed before | |
| 185 // their initialization. | |
| 186 | |
| 187 assert(Universe::is_fully_initialized(), "must be"); | |
| 188 | |
| 189 oop o = Universe::null_ptr_exception_instance(); | |
| 190 assert(o != NULL, "should have been initialized"); | |
| 191 _NullPointerException_instance = get_object(o)->as_instance(); | |
| 192 o = Universe::arithmetic_exception_instance(); | |
| 193 assert(o != NULL, "should have been initialized"); | |
| 194 _ArithmeticException_instance = get_object(o)->as_instance(); | |
| 195 | |
| 196 _ArrayIndexOutOfBoundsException_instance = NULL; | |
| 197 _ArrayStoreException_instance = NULL; | |
| 198 _ClassCastException_instance = NULL; | |
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199 _the_null_string = NULL; |
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200 _the_min_jint_string = NULL; |
| 0 | 201 } |
| 202 | |
| 203 ciEnv::~ciEnv() { | |
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204 _factory->remove_symbols(); |
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205 JavaThread::current()->set_env(NULL); |
| 0 | 206 } |
| 207 | |
| 208 // ------------------------------------------------------------------ | |
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209 // Cache Jvmti state |
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210 void ciEnv::cache_jvmti_state() { |
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211 VM_ENTRY_MARK; |
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212 // Get Jvmti capabilities under lock to get consistant values. |
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213 MutexLocker mu(JvmtiThreadState_lock); |
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214 _jvmti_can_hotswap_or_post_breakpoint = JvmtiExport::can_hotswap_or_post_breakpoint(); |
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215 _jvmti_can_access_local_variables = JvmtiExport::can_access_local_variables(); |
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216 _jvmti_can_post_on_exceptions = JvmtiExport::can_post_on_exceptions(); |
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217 } |
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218 |
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219 // ------------------------------------------------------------------ |
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220 // Cache DTrace flags |
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221 void ciEnv::cache_dtrace_flags() { |
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222 // Need lock? |
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223 _dtrace_extended_probes = ExtendedDTraceProbes; |
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224 if (_dtrace_extended_probes) { |
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225 _dtrace_monitor_probes = true; |
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226 _dtrace_method_probes = true; |
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227 _dtrace_alloc_probes = true; |
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228 } else { |
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229 _dtrace_monitor_probes = DTraceMonitorProbes; |
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230 _dtrace_method_probes = DTraceMethodProbes; |
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231 _dtrace_alloc_probes = DTraceAllocProbes; |
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232 } |
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233 } |
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234 |
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235 // ------------------------------------------------------------------ |
| 0 | 236 // helper for lazy exception creation |
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237 ciInstance* ciEnv::get_or_create_exception(jobject& handle, Symbol* name) { |
| 0 | 238 VM_ENTRY_MARK; |
| 239 if (handle == NULL) { | |
| 240 // Cf. universe.cpp, creation of Universe::_null_ptr_exception_instance. | |
| 241 klassOop k = SystemDictionary::find(name, Handle(), Handle(), THREAD); | |
| 242 jobject objh = NULL; | |
| 243 if (!HAS_PENDING_EXCEPTION && k != NULL) { | |
| 244 oop obj = instanceKlass::cast(k)->allocate_permanent_instance(THREAD); | |
| 245 if (!HAS_PENDING_EXCEPTION) | |
| 246 objh = JNIHandles::make_global(obj); | |
| 247 } | |
| 248 if (HAS_PENDING_EXCEPTION) { | |
| 249 CLEAR_PENDING_EXCEPTION; | |
| 250 } else { | |
| 251 handle = objh; | |
| 252 } | |
| 253 } | |
| 254 oop obj = JNIHandles::resolve(handle); | |
| 255 return obj == NULL? NULL: get_object(obj)->as_instance(); | |
| 256 } | |
| 257 | |
| 258 // ------------------------------------------------------------------ | |
| 259 // ciEnv::ArrayIndexOutOfBoundsException_instance, etc. | |
| 260 ciInstance* ciEnv::ArrayIndexOutOfBoundsException_instance() { | |
| 261 if (_ArrayIndexOutOfBoundsException_instance == NULL) { | |
| 262 _ArrayIndexOutOfBoundsException_instance | |
| 263 = get_or_create_exception(_ArrayIndexOutOfBoundsException_handle, | |
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264 vmSymbols::java_lang_ArrayIndexOutOfBoundsException()); |
| 0 | 265 } |
| 266 return _ArrayIndexOutOfBoundsException_instance; | |
| 267 } | |
| 268 ciInstance* ciEnv::ArrayStoreException_instance() { | |
| 269 if (_ArrayStoreException_instance == NULL) { | |
| 270 _ArrayStoreException_instance | |
| 271 = get_or_create_exception(_ArrayStoreException_handle, | |
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272 vmSymbols::java_lang_ArrayStoreException()); |
| 0 | 273 } |
| 274 return _ArrayStoreException_instance; | |
| 275 } | |
| 276 ciInstance* ciEnv::ClassCastException_instance() { | |
| 277 if (_ClassCastException_instance == NULL) { | |
| 278 _ClassCastException_instance | |
| 279 = get_or_create_exception(_ClassCastException_handle, | |
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280 vmSymbols::java_lang_ClassCastException()); |
| 0 | 281 } |
| 282 return _ClassCastException_instance; | |
| 283 } | |
| 284 | |
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285 ciInstance* ciEnv::the_null_string() { |
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286 if (_the_null_string == NULL) { |
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287 VM_ENTRY_MARK; |
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288 _the_null_string = get_object(Universe::the_null_string())->as_instance(); |
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289 } |
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290 return _the_null_string; |
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291 } |
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292 |
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293 ciInstance* ciEnv::the_min_jint_string() { |
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294 if (_the_min_jint_string == NULL) { |
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295 VM_ENTRY_MARK; |
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296 _the_min_jint_string = get_object(Universe::the_min_jint_string())->as_instance(); |
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297 } |
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298 return _the_min_jint_string; |
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299 } |
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300 |
| 0 | 301 // ------------------------------------------------------------------ |
| 302 // ciEnv::get_method_from_handle | |
| 303 ciMethod* ciEnv::get_method_from_handle(jobject method) { | |
| 304 VM_ENTRY_MARK; | |
| 305 return get_object(JNIHandles::resolve(method))->as_method(); | |
| 306 } | |
| 307 | |
| 308 // ------------------------------------------------------------------ | |
| 309 // ciEnv::make_array | |
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310 ciArray* ciEnv::make_system_array(GrowableArray<ciObject*>* objects) { |
| 0 | 311 VM_ENTRY_MARK; |
| 312 int length = objects->length(); | |
| 313 objArrayOop a = oopFactory::new_system_objArray(length, THREAD); | |
| 314 if (HAS_PENDING_EXCEPTION) { | |
| 315 CLEAR_PENDING_EXCEPTION; | |
| 316 record_out_of_memory_failure(); | |
| 317 return NULL; | |
| 318 } | |
| 319 for (int i = 0; i < length; i++) { | |
| 320 a->obj_at_put(i, objects->at(i)->get_oop()); | |
| 321 } | |
| 322 assert(a->is_perm(), ""); | |
| 323 return get_object(a)->as_array(); | |
| 324 } | |
| 325 | |
| 326 | |
| 327 // ------------------------------------------------------------------ | |
| 328 // ciEnv::array_element_offset_in_bytes | |
| 329 int ciEnv::array_element_offset_in_bytes(ciArray* a_h, ciObject* o_h) { | |
| 330 VM_ENTRY_MARK; | |
| 331 objArrayOop a = (objArrayOop)a_h->get_oop(); | |
| 332 assert(a->is_objArray(), ""); | |
| 333 int length = a->length(); | |
| 334 oop o = o_h->get_oop(); | |
| 335 for (int i = 0; i < length; i++) { | |
| 336 if (a->obj_at(i) == o) return i; | |
| 337 } | |
| 338 return -1; | |
| 339 } | |
| 340 | |
| 341 | |
| 342 // ------------------------------------------------------------------ | |
| 343 // ciEnv::check_klass_accessiblity | |
| 344 // | |
| 345 // Note: the logic of this method should mirror the logic of | |
| 346 // constantPoolOopDesc::verify_constant_pool_resolve. | |
| 347 bool ciEnv::check_klass_accessibility(ciKlass* accessing_klass, | |
| 348 klassOop resolved_klass) { | |
| 349 if (accessing_klass == NULL || !accessing_klass->is_loaded()) { | |
| 350 return true; | |
| 351 } | |
| 352 if (accessing_klass->is_obj_array()) { | |
| 353 accessing_klass = accessing_klass->as_obj_array_klass()->base_element_klass(); | |
| 354 } | |
| 355 if (!accessing_klass->is_instance_klass()) { | |
| 356 return true; | |
| 357 } | |
| 358 | |
| 359 if (resolved_klass->klass_part()->oop_is_objArray()) { | |
| 360 // Find the element klass, if this is an array. | |
| 361 resolved_klass = objArrayKlass::cast(resolved_klass)->bottom_klass(); | |
| 362 } | |
| 363 if (resolved_klass->klass_part()->oop_is_instance()) { | |
| 364 return Reflection::verify_class_access(accessing_klass->get_klassOop(), | |
| 365 resolved_klass, | |
| 366 true); | |
| 367 } | |
| 368 return true; | |
| 369 } | |
| 370 | |
| 371 // ------------------------------------------------------------------ | |
| 372 // ciEnv::get_klass_by_name_impl | |
| 373 ciKlass* ciEnv::get_klass_by_name_impl(ciKlass* accessing_klass, | |
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374 constantPoolHandle cpool, |
| 0 | 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, cpool, 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; |
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416 { |
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417 ttyUnlocker ttyul; // release tty lock to avoid ordering problems |
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418 MutexLocker ml(Compile_lock); |
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419 klassOop kls; |
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420 if (!require_local) { |
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421 kls = SystemDictionary::find_constrained_instance_or_array_klass(sym, loader, |
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422 KILL_COMPILE_ON_FATAL_(fail_type)); |
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423 } else { |
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424 kls = SystemDictionary::find_instance_or_array_klass(sym, loader, domain, |
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425 KILL_COMPILE_ON_FATAL_(fail_type)); |
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426 } |
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427 found_klass = KlassHandle(THREAD, kls); |
| 0 | 428 } |
| 429 | |
| 430 // If we fail to find an array klass, look again for its element type. | |
| 431 // The element type may be available either locally or via constraints. | |
| 432 // In either case, if we can find the element type in the system dictionary, | |
| 433 // we must build an array type around it. The CI requires array klasses | |
| 434 // to be loaded if their element klasses are loaded, except when memory | |
| 435 // is exhausted. | |
| 436 if (sym->byte_at(0) == '[' && | |
| 437 (sym->byte_at(1) == '[' || sym->byte_at(1) == 'L')) { | |
| 438 // We have an unloaded array. | |
| 439 // Build it on the fly if the element class exists. | |
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440 TempNewSymbol elem_sym = SymbolTable::new_symbol(sym->as_utf8()+1, |
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441 sym->utf8_length()-1, |
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442 KILL_COMPILE_ON_FATAL_(fail_type)); |
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443 |
| 0 | 444 // Get element ciKlass recursively. |
| 445 ciKlass* elem_klass = | |
| 446 get_klass_by_name_impl(accessing_klass, | |
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447 cpool, |
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448 get_symbol(elem_sym), |
| 0 | 449 require_local); |
| 450 if (elem_klass != NULL && elem_klass->is_loaded()) { | |
| 451 // Now make an array for it | |
| 452 return ciObjArrayKlass::make_impl(elem_klass); | |
| 453 } | |
| 454 } | |
| 455 | |
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456 if (found_klass() == NULL && !cpool.is_null() && cpool->has_preresolution()) { |
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457 // Look inside the constant pool for pre-resolved class entries. |
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458 for (int i = cpool->length() - 1; i >= 1; i--) { |
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459 if (cpool->tag_at(i).is_klass()) { |
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460 klassOop kls = cpool->resolved_klass_at(i); |
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461 if (Klass::cast(kls)->name() == sym) { |
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462 found_klass = KlassHandle(THREAD, kls); |
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463 break; |
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464 } |
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465 } |
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466 } |
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467 } |
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468 |
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469 if (found_klass() != NULL) { |
| 0 | 470 // Found it. Build a CI handle. |
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471 return get_object(found_klass())->as_klass(); |
| 0 | 472 } |
| 473 | |
| 474 if (require_local) return NULL; | |
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475 |
| 0 | 476 // Not yet loaded into the VM, or not governed by loader constraints. |
| 477 // Make a CI representative for it. | |
| 478 return get_unloaded_klass(accessing_klass, name); | |
| 479 } | |
| 480 | |
| 481 // ------------------------------------------------------------------ | |
| 482 // ciEnv::get_klass_by_name | |
| 483 ciKlass* ciEnv::get_klass_by_name(ciKlass* accessing_klass, | |
| 484 ciSymbol* klass_name, | |
| 485 bool require_local) { | |
| 486 GUARDED_VM_ENTRY(return get_klass_by_name_impl(accessing_klass, | |
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487 constantPoolHandle(), |
| 0 | 488 klass_name, |
| 489 require_local);) | |
| 490 } | |
| 491 | |
| 492 // ------------------------------------------------------------------ | |
| 493 // ciEnv::get_klass_by_index_impl | |
| 494 // | |
| 495 // Implementation of get_klass_by_index. | |
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496 ciKlass* ciEnv::get_klass_by_index_impl(constantPoolHandle cpool, |
| 0 | 497 int index, |
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498 bool& is_accessible, |
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499 ciInstanceKlass* accessor) { |
| 0 | 500 EXCEPTION_CONTEXT; |
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501 KlassHandle klass(THREAD, constantPoolOopDesc::klass_at_if_loaded(cpool, index)); |
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502 Symbol* klass_name = NULL; |
| 0 | 503 if (klass.is_null()) { |
| 504 // The klass has not been inserted into the constant pool. | |
| 505 // Try to look it up by name. | |
| 506 { | |
| 507 // We have to lock the cpool to keep the oop from being resolved | |
| 508 // while we are accessing it. | |
| 509 ObjectLocker ol(cpool, THREAD); | |
| 510 | |
| 511 constantTag tag = cpool->tag_at(index); | |
| 512 if (tag.is_klass()) { | |
| 513 // The klass has been inserted into the constant pool | |
| 514 // very recently. | |
| 515 klass = KlassHandle(THREAD, cpool->resolved_klass_at(index)); | |
| 516 } else if (tag.is_symbol()) { | |
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517 klass_name = cpool->symbol_at(index); |
| 0 | 518 } else { |
| 519 assert(cpool->tag_at(index).is_unresolved_klass(), "wrong tag"); | |
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520 klass_name = cpool->unresolved_klass_at(index); |
| 0 | 521 } |
| 522 } | |
| 523 } | |
| 524 | |
| 525 if (klass.is_null()) { | |
| 526 // Not found in constant pool. Use the name to do the lookup. | |
| 527 ciKlass* k = get_klass_by_name_impl(accessor, | |
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528 cpool, |
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529 get_symbol(klass_name), |
| 0 | 530 false); |
| 531 // Calculate accessibility the hard way. | |
| 532 if (!k->is_loaded()) { | |
| 533 is_accessible = false; | |
| 534 } else if (k->loader() != accessor->loader() && | |
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535 get_klass_by_name_impl(accessor, cpool, k->name(), true) == NULL) { |
| 0 | 536 // Loaded only remotely. Not linked yet. |
| 537 is_accessible = false; | |
| 538 } else { | |
| 539 // Linked locally, and we must also check public/private, etc. | |
| 540 is_accessible = check_klass_accessibility(accessor, k->get_klassOop()); | |
| 541 } | |
| 542 return k; | |
| 543 } | |
| 544 | |
| 545 // Check for prior unloaded klass. The SystemDictionary's answers | |
| 546 // can vary over time but the compiler needs consistency. | |
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547 ciSymbol* name = get_symbol(klass()->klass_part()->name()); |
| 0 | 548 ciKlass* unloaded_klass = check_get_unloaded_klass(accessor, name); |
| 549 if (unloaded_klass != NULL) { | |
| 550 is_accessible = false; | |
| 551 return unloaded_klass; | |
| 552 } | |
| 553 | |
| 554 // It is known to be accessible, since it was found in the constant pool. | |
| 555 is_accessible = true; | |
| 556 return get_object(klass())->as_klass(); | |
| 557 } | |
| 558 | |
| 559 // ------------------------------------------------------------------ | |
| 560 // ciEnv::get_klass_by_index | |
| 561 // | |
| 562 // Get a klass from the constant pool. | |
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563 ciKlass* ciEnv::get_klass_by_index(constantPoolHandle cpool, |
| 0 | 564 int index, |
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565 bool& is_accessible, |
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566 ciInstanceKlass* accessor) { |
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567 GUARDED_VM_ENTRY(return get_klass_by_index_impl(cpool, index, is_accessible, accessor);) |
| 0 | 568 } |
| 569 | |
| 570 // ------------------------------------------------------------------ | |
| 571 // ciEnv::get_constant_by_index_impl | |
| 572 // | |
| 573 // Implementation of get_constant_by_index(). | |
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574 ciConstant ciEnv::get_constant_by_index_impl(constantPoolHandle cpool, |
| 1602 | 575 int pool_index, int cache_index, |
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576 ciInstanceKlass* accessor) { |
| 1602 | 577 bool ignore_will_link; |
| 0 | 578 EXCEPTION_CONTEXT; |
| 1602 | 579 int index = pool_index; |
| 580 if (cache_index >= 0) { | |
| 581 assert(index < 0, "only one kind of index at a time"); | |
| 582 ConstantPoolCacheEntry* cpc_entry = cpool->cache()->entry_at(cache_index); | |
| 583 index = cpc_entry->constant_pool_index(); | |
| 584 oop obj = cpc_entry->f1(); | |
| 585 if (obj != NULL) { | |
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586 assert(obj->is_instance() || obj->is_array(), "must be a Java reference"); |
| 1602 | 587 ciObject* ciobj = get_object(obj); |
| 588 return ciConstant(T_OBJECT, ciobj); | |
| 589 } | |
| 590 } | |
| 0 | 591 constantTag tag = cpool->tag_at(index); |
| 592 if (tag.is_int()) { | |
| 593 return ciConstant(T_INT, (jint)cpool->int_at(index)); | |
| 594 } else if (tag.is_long()) { | |
| 595 return ciConstant((jlong)cpool->long_at(index)); | |
| 596 } else if (tag.is_float()) { | |
| 597 return ciConstant((jfloat)cpool->float_at(index)); | |
| 598 } else if (tag.is_double()) { | |
| 599 return ciConstant((jdouble)cpool->double_at(index)); | |
| 600 } else if (tag.is_string() || tag.is_unresolved_string()) { | |
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601 oop string = NULL; |
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602 if (cpool->is_pseudo_string_at(index)) { |
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603 string = cpool->pseudo_string_at(index); |
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604 } else { |
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605 string = cpool->string_at(index, THREAD); |
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606 if (HAS_PENDING_EXCEPTION) { |
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607 CLEAR_PENDING_EXCEPTION; |
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608 record_out_of_memory_failure(); |
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609 return ciConstant(); |
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610 } |
| 0 | 611 } |
| 612 ciObject* constant = get_object(string); | |
| 613 assert (constant->is_instance(), "must be an instance, or not? "); | |
| 614 return ciConstant(T_OBJECT, constant); | |
| 615 } else if (tag.is_klass() || tag.is_unresolved_klass()) { | |
| 616 // 4881222: allow ldc to take a class type | |
| 1602 | 617 ciKlass* klass = get_klass_by_index_impl(cpool, index, ignore_will_link, accessor); |
| 0 | 618 if (HAS_PENDING_EXCEPTION) { |
| 619 CLEAR_PENDING_EXCEPTION; | |
| 620 record_out_of_memory_failure(); | |
| 621 return ciConstant(); | |
| 622 } | |
| 623 assert (klass->is_instance_klass() || klass->is_array_klass(), | |
| 624 "must be an instance or array klass "); | |
| 1602 | 625 return ciConstant(T_OBJECT, klass->java_mirror()); |
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626 } else if (tag.is_object()) { |
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627 oop obj = cpool->object_at(index); |
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628 assert(obj->is_instance() || obj->is_array(), "must be a Java reference"); |
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629 ciObject* ciobj = get_object(obj); |
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630 return ciConstant(T_OBJECT, ciobj); |
| 1602 | 631 } else if (tag.is_method_type()) { |
| 632 // must execute Java code to link this CP entry into cache[i].f1 | |
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633 ciSymbol* signature = get_symbol(cpool->method_type_signature_at(index)); |
| 1602 | 634 ciObject* ciobj = get_unloaded_method_type_constant(signature); |
| 635 return ciConstant(T_OBJECT, ciobj); | |
| 636 } else if (tag.is_method_handle()) { | |
| 637 // must execute Java code to link this CP entry into cache[i].f1 | |
| 638 int ref_kind = cpool->method_handle_ref_kind_at(index); | |
| 639 int callee_index = cpool->method_handle_klass_index_at(index); | |
| 640 ciKlass* callee = get_klass_by_index_impl(cpool, callee_index, ignore_will_link, accessor); | |
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641 ciSymbol* name = get_symbol(cpool->method_handle_name_ref_at(index)); |
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642 ciSymbol* signature = get_symbol(cpool->method_handle_signature_ref_at(index)); |
| 1602 | 643 ciObject* ciobj = get_unloaded_method_handle_constant(callee, name, signature, ref_kind); |
| 644 return ciConstant(T_OBJECT, ciobj); | |
| 0 | 645 } else { |
| 646 ShouldNotReachHere(); | |
| 647 return ciConstant(); | |
| 648 } | |
| 649 } | |
| 650 | |
| 651 // ------------------------------------------------------------------ | |
| 652 // ciEnv::get_constant_by_index | |
| 653 // | |
| 654 // Pull a constant out of the constant pool. How appropriate. | |
| 655 // | |
| 656 // Implementation note: this query is currently in no way cached. | |
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657 ciConstant ciEnv::get_constant_by_index(constantPoolHandle cpool, |
| 1602 | 658 int pool_index, int cache_index, |
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659 ciInstanceKlass* accessor) { |
| 1602 | 660 GUARDED_VM_ENTRY(return get_constant_by_index_impl(cpool, pool_index, cache_index, accessor);) |
| 0 | 661 } |
| 662 | |
| 663 // ------------------------------------------------------------------ | |
| 664 // ciEnv::get_field_by_index_impl | |
| 665 // | |
| 666 // Implementation of get_field_by_index. | |
| 667 // | |
| 668 // Implementation note: the results of field lookups are cached | |
| 669 // in the accessor klass. | |
| 670 ciField* ciEnv::get_field_by_index_impl(ciInstanceKlass* accessor, | |
| 671 int index) { | |
| 672 ciConstantPoolCache* cache = accessor->field_cache(); | |
| 673 if (cache == NULL) { | |
| 674 ciField* field = new (arena()) ciField(accessor, index); | |
| 675 return field; | |
| 676 } else { | |
| 677 ciField* field = (ciField*)cache->get(index); | |
| 678 if (field == NULL) { | |
| 679 field = new (arena()) ciField(accessor, index); | |
| 680 cache->insert(index, field); | |
| 681 } | |
| 682 return field; | |
| 683 } | |
| 684 } | |
| 685 | |
| 686 // ------------------------------------------------------------------ | |
| 687 // ciEnv::get_field_by_index | |
| 688 // | |
| 689 // Get a field by index from a klass's constant pool. | |
| 690 ciField* ciEnv::get_field_by_index(ciInstanceKlass* accessor, | |
| 691 int index) { | |
| 692 GUARDED_VM_ENTRY(return get_field_by_index_impl(accessor, index);) | |
| 693 } | |
| 694 | |
| 695 // ------------------------------------------------------------------ | |
| 696 // ciEnv::lookup_method | |
| 697 // | |
| 698 // Perform an appropriate method lookup based on accessor, holder, | |
| 699 // name, signature, and bytecode. | |
| 700 methodOop ciEnv::lookup_method(instanceKlass* accessor, | |
| 701 instanceKlass* holder, | |
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702 Symbol* name, |
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703 Symbol* sig, |
| 0 | 704 Bytecodes::Code bc) { |
| 705 EXCEPTION_CONTEXT; | |
| 706 KlassHandle h_accessor(THREAD, accessor); | |
| 707 KlassHandle h_holder(THREAD, holder); | |
| 708 LinkResolver::check_klass_accessability(h_accessor, h_holder, KILL_COMPILE_ON_FATAL_(NULL)); | |
| 709 methodHandle dest_method; | |
| 710 switch (bc) { | |
| 711 case Bytecodes::_invokestatic: | |
| 712 dest_method = | |
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713 LinkResolver::resolve_static_call_or_null(h_holder, name, sig, h_accessor); |
| 0 | 714 break; |
| 715 case Bytecodes::_invokespecial: | |
| 716 dest_method = | |
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717 LinkResolver::resolve_special_call_or_null(h_holder, name, sig, h_accessor); |
| 0 | 718 break; |
| 719 case Bytecodes::_invokeinterface: | |
| 720 dest_method = | |
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721 LinkResolver::linktime_resolve_interface_method_or_null(h_holder, name, sig, |
| 0 | 722 h_accessor, true); |
| 723 break; | |
| 724 case Bytecodes::_invokevirtual: | |
| 725 dest_method = | |
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726 LinkResolver::linktime_resolve_virtual_method_or_null(h_holder, name, sig, |
| 0 | 727 h_accessor, true); |
| 728 break; | |
| 729 default: ShouldNotReachHere(); | |
| 730 } | |
| 731 | |
| 732 return dest_method(); | |
| 733 } | |
| 734 | |
| 735 | |
| 736 // ------------------------------------------------------------------ | |
| 737 // ciEnv::get_method_by_index_impl | |
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738 ciMethod* ciEnv::get_method_by_index_impl(constantPoolHandle cpool, |
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739 int index, Bytecodes::Code bc, |
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740 ciInstanceKlass* accessor) { |
| 0 | 741 int holder_index = cpool->klass_ref_index_at(index); |
| 742 bool holder_is_accessible; | |
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743 ciKlass* holder = get_klass_by_index_impl(cpool, holder_index, holder_is_accessible, accessor); |
| 0 | 744 ciInstanceKlass* declared_holder = get_instance_klass_for_declared_method_holder(holder); |
| 745 | |
| 746 // Get the method's name and signature. | |
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747 Symbol* name_sym = cpool->name_ref_at(index); |
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748 Symbol* sig_sym = cpool->signature_ref_at(index); |
| 0 | 749 |
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750 if (cpool->has_preresolution() |
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751 || (holder == ciEnv::MethodHandle_klass() && |
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752 methodOopDesc::is_method_handle_invoke_name(name_sym))) { |
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753 // Short-circuit lookups for JSR 292-related call sites. |
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754 // That is, do not rely only on name-based lookups, because they may fail |
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755 // if the names are not resolvable in the boot class loader (7056328). |
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756 switch (bc) { |
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757 case Bytecodes::_invokevirtual: |
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758 case Bytecodes::_invokeinterface: |
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759 case Bytecodes::_invokespecial: |
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760 case Bytecodes::_invokestatic: |
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761 { |
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762 methodOop m = constantPoolOopDesc::method_at_if_loaded(cpool, index, bc); |
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763 if (m != NULL) { |
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764 return get_object(m)->as_method(); |
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765 } |
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766 } |
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767 } |
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768 } |
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769 |
| 0 | 770 if (holder_is_accessible) { // Our declared holder is loaded. |
| 771 instanceKlass* lookup = declared_holder->get_instanceKlass(); | |
| 772 methodOop m = lookup_method(accessor->get_instanceKlass(), lookup, name_sym, sig_sym, bc); | |
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773 if (m != NULL && |
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774 (bc == Bytecodes::_invokestatic |
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775 ? instanceKlass::cast(m->method_holder())->is_not_initialized() |
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776 : !instanceKlass::cast(m->method_holder())->is_loaded())) { |
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777 m = NULL; |
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778 } |
| 0 | 779 if (m != NULL) { |
| 780 // We found the method. | |
| 781 return get_object(m)->as_method(); | |
| 782 } | |
| 783 } | |
| 784 | |
| 785 // Either the declared holder was not loaded, or the method could | |
| 786 // not be found. Create a dummy ciMethod to represent the failed | |
| 787 // lookup. | |
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788 ciSymbol* name = get_symbol(name_sym); |
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789 ciSymbol* signature = get_symbol(sig_sym); |
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790 return get_unloaded_method(declared_holder, name, signature, accessor); |
| 0 | 791 } |
| 792 | |
| 793 | |
| 794 // ------------------------------------------------------------------ | |
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795 // ciEnv::get_fake_invokedynamic_method_impl |
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796 ciMethod* ciEnv::get_fake_invokedynamic_method_impl(constantPoolHandle cpool, |
|
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797 int index, Bytecodes::Code bc, |
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798 ciInstanceKlass* accessor) { |
|
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799 // Compare the following logic with InterpreterRuntime::resolve_invokedynamic. |
|
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800 assert(bc == Bytecodes::_invokedynamic, "must be invokedynamic"); |
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801 |
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802 bool is_resolved = cpool->cache()->main_entry_at(index)->is_resolved(bc); |
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803 if (is_resolved && cpool->cache()->secondary_entry_at(index)->is_f1_null()) |
|
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804 // FIXME: code generation could allow for null (unlinked) call site |
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805 is_resolved = false; |
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806 |
|
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807 // Call site might not be resolved yet. We could create a real invoker method from the |
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808 // compiler, but it is simpler to stop the code path here with an unlinked method. |
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809 if (!is_resolved) { |
|
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810 ciInstanceKlass* holder = get_object(SystemDictionary::MethodHandle_klass())->as_instance_klass(); |
|
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811 ciSymbol* name = ciSymbol::invokeExact_name(); |
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812 ciSymbol* signature = get_symbol(cpool->signature_ref_at(index)); |
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813 return get_unloaded_method(holder, name, signature, accessor); |
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814 } |
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815 |
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816 // Get the invoker methodOop from the constant pool. |
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817 oop f1_value = cpool->cache()->main_entry_at(index)->f1(); |
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818 methodOop signature_invoker = (methodOop) f1_value; |
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819 assert(signature_invoker != NULL && signature_invoker->is_method() && signature_invoker->is_method_handle_invoke(), |
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820 "correct result from LinkResolver::resolve_invokedynamic"); |
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821 |
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822 return get_object(signature_invoker)->as_method(); |
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823 } |
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824 |
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825 |
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826 // ------------------------------------------------------------------ |
| 0 | 827 // ciEnv::get_instance_klass_for_declared_method_holder |
| 828 ciInstanceKlass* ciEnv::get_instance_klass_for_declared_method_holder(ciKlass* method_holder) { | |
| 829 // For the case of <array>.clone(), the method holder can be a ciArrayKlass | |
| 830 // instead of a ciInstanceKlass. For that case simply pretend that the | |
| 831 // declared holder is Object.clone since that's where the call will bottom out. | |
| 832 // A more correct fix would trickle out through many interfaces in CI, | |
| 833 // requiring ciInstanceKlass* to become ciKlass* and many more places would | |
| 834 // require checks to make sure the expected type was found. Given that this | |
| 835 // only occurs for clone() the more extensive fix seems like overkill so | |
| 836 // instead we simply smear the array type into Object. | |
| 837 if (method_holder->is_instance_klass()) { | |
| 838 return method_holder->as_instance_klass(); | |
| 839 } else if (method_holder->is_array_klass()) { | |
| 840 return current()->Object_klass(); | |
| 841 } else { | |
| 842 ShouldNotReachHere(); | |
| 843 } | |
| 844 return NULL; | |
| 845 } | |
| 846 | |
| 847 | |
| 848 // ------------------------------------------------------------------ | |
| 849 // ciEnv::get_method_by_index | |
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850 ciMethod* ciEnv::get_method_by_index(constantPoolHandle cpool, |
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851 int index, Bytecodes::Code bc, |
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852 ciInstanceKlass* accessor) { |
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853 if (bc == Bytecodes::_invokedynamic) { |
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854 GUARDED_VM_ENTRY(return get_fake_invokedynamic_method_impl(cpool, index, bc, accessor);) |
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855 } else { |
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856 GUARDED_VM_ENTRY(return get_method_by_index_impl( cpool, index, bc, accessor);) |
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857 } |
| 0 | 858 } |
| 859 | |
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860 |
| 0 | 861 // ------------------------------------------------------------------ |
| 862 // ciEnv::name_buffer | |
| 863 char *ciEnv::name_buffer(int req_len) { | |
| 864 if (_name_buffer_len < req_len) { | |
| 865 if (_name_buffer == NULL) { | |
| 866 _name_buffer = (char*)arena()->Amalloc(sizeof(char)*req_len); | |
| 867 _name_buffer_len = req_len; | |
| 868 } else { | |
| 869 _name_buffer = | |
| 870 (char*)arena()->Arealloc(_name_buffer, _name_buffer_len, req_len); | |
| 871 _name_buffer_len = req_len; | |
| 872 } | |
| 873 } | |
| 874 return _name_buffer; | |
| 875 } | |
| 876 | |
| 877 // ------------------------------------------------------------------ | |
| 878 // ciEnv::is_in_vm | |
| 879 bool ciEnv::is_in_vm() { | |
| 880 return JavaThread::current()->thread_state() == _thread_in_vm; | |
| 881 } | |
| 882 | |
| 883 bool ciEnv::system_dictionary_modification_counter_changed() { | |
| 884 return _system_dictionary_modification_counter != SystemDictionary::number_of_modifications(); | |
| 885 } | |
| 886 | |
| 887 // ------------------------------------------------------------------ | |
|
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888 // ciEnv::validate_compile_task_dependencies |
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889 // |
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890 // Check for changes during compilation (e.g. class loads, evolution, |
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891 // breakpoints, call site invalidation). |
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892 void ciEnv::validate_compile_task_dependencies(ciMethod* target) { |
| 0 | 893 if (failing()) return; // no need for further checks |
| 894 | |
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895 // First, check non-klass dependencies as we might return early and |
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896 // not check klass dependencies if the system dictionary |
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897 // modification counter hasn't changed (see below). |
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898 for (Dependencies::DepStream deps(dependencies()); deps.next(); ) { |
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899 if (deps.is_klass_type()) continue; // skip klass dependencies |
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900 klassOop witness = deps.check_dependency(); |
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901 if (witness != NULL) { |
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902 record_failure("invalid non-klass dependency"); |
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903 return; |
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904 } |
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905 } |
| 0 | 906 |
|
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907 // Klass dependencies must be checked when the system dictionary |
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908 // changes. If logging is enabled all violated dependences will be |
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909 // recorded in the log. In debug mode check dependencies even if |
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910 // the system dictionary hasn't changed to verify that no invalid |
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911 // dependencies were inserted. Any violated dependences in this |
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912 // case are dumped to the tty. |
| 0 | 913 bool counter_changed = system_dictionary_modification_counter_changed(); |
| 914 | |
| 3959 | 915 bool verify_deps = trueInDebug; |
| 916 if (!counter_changed && !verify_deps) return; | |
| 917 | |
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918 int klass_violations = 0; |
| 0 | 919 for (Dependencies::DepStream deps(dependencies()); deps.next(); ) { |
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920 if (!deps.is_klass_type()) continue; // skip non-klass dependencies |
| 0 | 921 klassOop witness = deps.check_dependency(); |
| 922 if (witness != NULL) { | |
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923 klass_violations++; |
| 3959 | 924 if (!counter_changed) { |
| 925 // Dependence failed but counter didn't change. Log a message | |
| 926 // describing what failed and allow the assert at the end to | |
| 927 // trigger. | |
| 928 deps.print_dependency(witness); | |
| 929 } else if (xtty == NULL) { | |
| 930 // If we're not logging then a single violation is sufficient, | |
| 931 // otherwise we want to log all the dependences which were | |
| 932 // violated. | |
| 933 break; | |
| 934 } | |
| 0 | 935 } |
| 936 } | |
| 937 | |
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938 if (klass_violations != 0) { |
| 3959 | 939 #ifdef ASSERT |
| 940 if (!counter_changed && !PrintCompilation) { | |
| 941 // Print out the compile task that failed | |
| 942 _task->print_line(); | |
| 943 } | |
| 944 #endif | |
| 0 | 945 assert(counter_changed, "failed dependencies, but counter didn't change"); |
| 946 record_failure("concurrent class loading"); | |
| 947 } | |
| 948 } | |
| 949 | |
| 950 // ------------------------------------------------------------------ | |
| 951 // ciEnv::register_method | |
|
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952 nmethod* ciEnv::register_method(ciMethod* target, |
| 0 | 953 int entry_bci, |
| 954 CodeOffsets* offsets, | |
| 955 int orig_pc_offset, | |
| 956 CodeBuffer* code_buffer, | |
| 957 int frame_words, | |
| 958 OopMapSet* oop_map_set, | |
| 959 ExceptionHandlerTable* handler_table, | |
| 960 ImplicitExceptionTable* inc_table, | |
| 961 AbstractCompiler* compiler, | |
| 962 int comp_level, | |
| 963 bool has_unsafe_access) { | |
| 964 VM_ENTRY_MARK; | |
| 965 nmethod* nm = NULL; | |
| 966 { | |
| 967 // To prevent compile queue updates. | |
| 968 MutexLocker locker(MethodCompileQueue_lock, THREAD); | |
| 969 | |
| 970 // Prevent SystemDictionary::add_to_hierarchy from running | |
| 971 // and invalidating our dependencies until we install this method. | |
| 972 MutexLocker ml(Compile_lock); | |
| 973 | |
|
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974 // Change in Jvmti state may invalidate compilation. |
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975 if (!failing() && |
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976 ( (!jvmti_can_hotswap_or_post_breakpoint() && |
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977 JvmtiExport::can_hotswap_or_post_breakpoint()) || |
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978 (!jvmti_can_access_local_variables() && |
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979 JvmtiExport::can_access_local_variables()) || |
|
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980 (!jvmti_can_post_on_exceptions() && |
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981 JvmtiExport::can_post_on_exceptions()) )) { |
|
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982 record_failure("Jvmti state change invalidated dependencies"); |
| 0 | 983 } |
| 984 | |
|
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985 // Change in DTrace flags may invalidate compilation. |
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986 if (!failing() && |
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987 ( (!dtrace_extended_probes() && ExtendedDTraceProbes) || |
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988 (!dtrace_method_probes() && DTraceMethodProbes) || |
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989 (!dtrace_alloc_probes() && DTraceAllocProbes) )) { |
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990 record_failure("DTrace flags change invalidated dependencies"); |
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991 } |
| 0 | 992 |
|
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993 if (!failing()) { |
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994 if (log() != NULL) { |
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995 // Log the dependencies which this compilation declares. |
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996 dependencies()->log_all_dependencies(); |
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997 } |
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998 |
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999 // Encode the dependencies now, so we can check them right away. |
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1000 dependencies()->encode_content_bytes(); |
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1001 |
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1002 // Check for {class loads, evolution, breakpoints, ...} during compilation |
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1003 validate_compile_task_dependencies(target); |
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1004 } |
| 0 | 1005 |
| 1006 methodHandle method(THREAD, target->get_methodOop()); | |
| 1007 | |
| 1008 if (failing()) { | |
| 1009 // While not a true deoptimization, it is a preemptive decompile. | |
| 1010 methodDataOop mdo = method()->method_data(); | |
| 1011 if (mdo != NULL) { | |
| 1012 mdo->inc_decompile_count(); | |
| 1013 } | |
| 1014 | |
| 1015 // All buffers in the CodeBuffer are allocated in the CodeCache. | |
| 1016 // If the code buffer is created on each compile attempt | |
| 1017 // as in C2, then it must be freed. | |
| 1018 code_buffer->free_blob(); | |
|
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1019 return NULL; |
| 0 | 1020 } |
| 1021 | |
| 1022 assert(offsets->value(CodeOffsets::Deopt) != -1, "must have deopt entry"); | |
| 1023 assert(offsets->value(CodeOffsets::Exceptions) != -1, "must have exception entry"); | |
| 1024 | |
| 1025 nm = nmethod::new_nmethod(method, | |
| 1026 compile_id(), | |
| 1027 entry_bci, | |
| 1028 offsets, | |
| 1029 orig_pc_offset, | |
| 1030 debug_info(), dependencies(), code_buffer, | |
| 1031 frame_words, oop_map_set, | |
| 1032 handler_table, inc_table, | |
| 1033 compiler, comp_level); | |
| 1034 | |
| 1035 // Free codeBlobs | |
| 1036 code_buffer->free_blob(); | |
| 1037 | |
| 1038 // stress test 6243940 by immediately making the method | |
| 1039 // non-entrant behind the system's back. This has serious | |
| 1040 // side effects on the code cache and is not meant for | |
| 1041 // general stress testing | |
| 1042 if (nm != NULL && StressNonEntrant) { | |
| 1043 MutexLockerEx pl(Patching_lock, Mutex::_no_safepoint_check_flag); | |
| 1044 NativeJump::patch_verified_entry(nm->entry_point(), nm->verified_entry_point(), | |
| 1045 SharedRuntime::get_handle_wrong_method_stub()); | |
| 1046 } | |
| 1047 | |
| 1048 if (nm == NULL) { | |
| 1049 // The CodeCache is full. Print out warning and disable compilation. | |
| 1050 record_failure("code cache is full"); | |
| 1202 | 1051 { |
| 1052 MutexUnlocker ml(Compile_lock); | |
| 1053 MutexUnlocker locker(MethodCompileQueue_lock); | |
| 1054 CompileBroker::handle_full_code_cache(); | |
| 0 | 1055 } |
| 1056 } else { | |
| 1057 nm->set_has_unsafe_access(has_unsafe_access); | |
| 1058 | |
| 1059 // Record successful registration. | |
| 1060 // (Put nm into the task handle *before* publishing to the Java heap.) | |
| 1061 if (task() != NULL) task()->set_code(nm); | |
| 1062 | |
|
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1063 if (entry_bci == InvocationEntryBci) { |
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1064 if (TieredCompilation) { |
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1065 // If there is an old version we're done with it |
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1066 nmethod* old = method->code(); |
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1067 if (TraceMethodReplacement && old != NULL) { |
| 1783 | 1068 ResourceMark rm; |
| 1069 char *method_name = method->name_and_sig_as_C_string(); | |
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1070 tty->print_cr("Replacing method %s", method_name); |
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1071 } |
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1072 if (old != NULL ) { |
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1073 old->make_not_entrant(); |
| 1783 | 1074 } |
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1075 } |
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1076 if (TraceNMethodInstalls ) { |
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1077 ResourceMark rm; |
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1078 char *method_name = method->name_and_sig_as_C_string(); |
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1079 ttyLocker ttyl; |
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1080 tty->print_cr("Installing method (%d) %s ", |
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1081 comp_level, |
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1082 method_name); |
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1083 } |
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1084 // Allow the code to be executed |
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1085 method->set_code(method, nm); |
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1086 } else { |
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1087 if (TraceNMethodInstalls ) { |
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1088 ResourceMark rm; |
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1089 char *method_name = method->name_and_sig_as_C_string(); |
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1090 ttyLocker ttyl; |
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1091 tty->print_cr("Installing osr method (%d) %s @ %d", |
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1092 comp_level, |
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1093 method_name, |
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1094 entry_bci); |
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1095 } |
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1096 instanceKlass::cast(method->method_holder())->add_osr_nmethod(nm); |
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1097 |
| 0 | 1098 } |
| 1099 } | |
| 1100 } | |
| 1101 // JVMTI -- compiled method notification (must be done outside lock) | |
| 1102 if (nm != NULL) { | |
| 1103 nm->post_compiled_method_load_event(); | |
| 1104 } | |
| 1105 | |
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1106 return nm; |
| 0 | 1107 } |
| 1108 | |
| 1109 | |
| 1110 // ------------------------------------------------------------------ | |
| 1111 // ciEnv::find_system_klass | |
| 1112 ciKlass* ciEnv::find_system_klass(ciSymbol* klass_name) { | |
| 1113 VM_ENTRY_MARK; | |
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1114 return get_klass_by_name_impl(NULL, constantPoolHandle(), klass_name, false); |
| 0 | 1115 } |
| 1116 | |
| 1117 // ------------------------------------------------------------------ | |
| 1118 // ciEnv::comp_level | |
| 1119 int ciEnv::comp_level() { | |
| 1783 | 1120 if (task() == NULL) return CompLevel_highest_tier; |
| 0 | 1121 return task()->comp_level(); |
| 1122 } | |
| 1123 | |
| 1124 // ------------------------------------------------------------------ | |
| 1125 // ciEnv::compile_id | |
| 1126 uint ciEnv::compile_id() { | |
| 1127 if (task() == NULL) return 0; | |
| 1128 return task()->compile_id(); | |
| 1129 } | |
| 1130 | |
| 1131 // ------------------------------------------------------------------ | |
| 1132 // ciEnv::notice_inlined_method() | |
| 1133 void ciEnv::notice_inlined_method(ciMethod* method) { | |
| 1134 _num_inlined_bytecodes += method->code_size(); | |
| 1135 } | |
| 1136 | |
| 1137 // ------------------------------------------------------------------ | |
| 1138 // ciEnv::num_inlined_bytecodes() | |
| 1139 int ciEnv::num_inlined_bytecodes() const { | |
| 1140 return _num_inlined_bytecodes; | |
| 1141 } | |
| 1142 | |
| 1143 // ------------------------------------------------------------------ | |
| 1144 // ciEnv::record_failure() | |
| 1145 void ciEnv::record_failure(const char* reason) { | |
| 1146 if (log() != NULL) { | |
| 1147 log()->elem("failure reason='%s'", reason); | |
| 1148 } | |
| 1149 if (_failure_reason == NULL) { | |
| 1150 // Record the first failure reason. | |
| 1151 _failure_reason = reason; | |
| 1152 } | |
| 1153 } | |
| 1154 | |
| 1155 // ------------------------------------------------------------------ | |
| 1156 // ciEnv::record_method_not_compilable() | |
| 1157 void ciEnv::record_method_not_compilable(const char* reason, bool all_tiers) { | |
| 1158 int new_compilable = | |
| 1159 all_tiers ? MethodCompilable_never : MethodCompilable_not_at_tier ; | |
| 1160 | |
| 1161 // Only note transitions to a worse state | |
| 1162 if (new_compilable > _compilable) { | |
| 1163 if (log() != NULL) { | |
| 1164 if (all_tiers) { | |
| 1165 log()->elem("method_not_compilable"); | |
| 1166 } else { | |
| 1167 log()->elem("method_not_compilable_at_tier"); | |
| 1168 } | |
| 1169 } | |
| 1170 _compilable = new_compilable; | |
| 1171 | |
| 1172 // Reset failure reason; this one is more important. | |
| 1173 _failure_reason = NULL; | |
| 1174 record_failure(reason); | |
| 1175 } | |
| 1176 } | |
| 1177 | |
| 1178 // ------------------------------------------------------------------ | |
| 1179 // ciEnv::record_out_of_memory_failure() | |
| 1180 void ciEnv::record_out_of_memory_failure() { | |
| 1181 // If memory is low, we stop compiling methods. | |
| 1182 record_method_not_compilable("out of memory"); | |
| 1183 } |