Mercurial > hg > graal-compiler
annotate src/share/vm/ci/ciEnv.cpp @ 8124:5fc51c1ecdeb
Merge.
| author | Thomas Wuerthinger <thomas.wuerthinger@oracle.com> |
|---|---|
| date | Tue, 05 Mar 2013 23:44:54 +0100 |
| parents | ce248dc0a656 f16e75e0cf11 |
| children | b9a918201d47 |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 8104 | 2 * Copyright (c) 1999, 2013, 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/ciMethod.hpp" | |
| 32 #include "ci/ciNullObject.hpp" | |
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33 #include "ci/ciReplay.hpp" |
| 1972 | 34 #include "ci/ciUtilities.hpp" |
| 35 #include "classfile/systemDictionary.hpp" | |
| 36 #include "classfile/vmSymbols.hpp" | |
| 37 #include "code/scopeDesc.hpp" | |
| 38 #include "compiler/compileBroker.hpp" | |
| 39 #include "compiler/compileLog.hpp" | |
| 40 #include "compiler/compilerOracle.hpp" | |
| 41 #include "gc_interface/collectedHeap.inline.hpp" | |
| 42 #include "interpreter/linkResolver.hpp" | |
| 43 #include "memory/allocation.inline.hpp" | |
| 44 #include "memory/oopFactory.hpp" | |
| 45 #include "memory/universe.inline.hpp" | |
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46 #include "oops/methodData.hpp" |
| 1972 | 47 #include "oops/objArrayKlass.hpp" |
| 48 #include "oops/oop.inline.hpp" | |
| 49 #include "oops/oop.inline2.hpp" | |
| 50 #include "prims/jvmtiExport.hpp" | |
| 51 #include "runtime/init.hpp" | |
| 52 #include "runtime/reflection.hpp" | |
| 53 #include "runtime/sharedRuntime.hpp" | |
| 54 #include "utilities/dtrace.hpp" | |
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55 #include "utilities/macros.hpp" |
| 1972 | 56 #ifdef COMPILER1 |
| 57 #include "c1/c1_Runtime1.hpp" | |
| 58 #endif | |
| 59 #ifdef COMPILER2 | |
| 60 #include "opto/runtime.hpp" | |
| 61 #endif | |
| 0 | 62 |
| 63 // ciEnv | |
| 64 // | |
| 65 // This class is the top level broker for requests from the compiler | |
| 66 // to the VM. | |
| 67 | |
| 68 ciObject* ciEnv::_null_object_instance; | |
| 69 | |
| 1142 | 70 #define WK_KLASS_DEFN(name, ignore_s, ignore_o) ciInstanceKlass* ciEnv::_##name = NULL; |
| 71 WK_KLASSES_DO(WK_KLASS_DEFN) | |
| 72 #undef WK_KLASS_DEFN | |
| 0 | 73 |
| 74 ciSymbol* ciEnv::_unloaded_cisymbol = NULL; | |
| 75 ciInstanceKlass* ciEnv::_unloaded_ciinstance_klass = NULL; | |
| 76 ciObjArrayKlass* ciEnv::_unloaded_ciobjarrayklass = NULL; | |
| 77 | |
| 78 jobject ciEnv::_ArrayIndexOutOfBoundsException_handle = NULL; | |
| 79 jobject ciEnv::_ArrayStoreException_handle = NULL; | |
| 80 jobject ciEnv::_ClassCastException_handle = NULL; | |
| 81 | |
| 82 #ifndef PRODUCT | |
| 83 static bool firstEnv = true; | |
| 84 #endif /* PRODUCT */ | |
| 85 | |
| 86 // ------------------------------------------------------------------ | |
| 87 // ciEnv::ciEnv | |
| 88 ciEnv::ciEnv(CompileTask* task, int system_dictionary_modification_counter) { | |
| 89 VM_ENTRY_MARK; | |
| 90 | |
| 91 // Set up ciEnv::current immediately, for the sake of ciObjectFactory, etc. | |
| 92 thread->set_env(this); | |
| 93 assert(ciEnv::current() == this, "sanity"); | |
| 94 | |
| 95 _oop_recorder = NULL; | |
| 96 _debug_info = NULL; | |
| 97 _dependencies = NULL; | |
| 98 _failure_reason = NULL; | |
| 99 _compilable = MethodCompilable; | |
| 100 _break_at_compile = false; | |
| 101 _compiler_data = NULL; | |
| 102 #ifndef PRODUCT | |
| 103 assert(!firstEnv, "not initialized properly"); | |
| 104 #endif /* !PRODUCT */ | |
| 105 | |
| 106 _system_dictionary_modification_counter = system_dictionary_modification_counter; | |
| 107 _num_inlined_bytecodes = 0; | |
| 108 assert(task == NULL || thread->task() == task, "sanity"); | |
| 109 _task = task; | |
| 110 _log = NULL; | |
| 111 | |
| 112 // Temporary buffer for creating symbols and such. | |
| 113 _name_buffer = NULL; | |
| 114 _name_buffer_len = 0; | |
| 115 | |
| 116 _arena = &_ciEnv_arena; | |
| 117 _factory = new (_arena) ciObjectFactory(_arena, 128); | |
| 118 | |
| 119 // Preload commonly referenced system ciObjects. | |
| 120 | |
| 121 // During VM initialization, these instances have not yet been created. | |
| 122 // Assertions ensure that these instances are not accessed before | |
| 123 // their initialization. | |
| 124 | |
| 125 assert(Universe::is_fully_initialized(), "should be complete"); | |
| 126 | |
| 127 oop o = Universe::null_ptr_exception_instance(); | |
| 128 assert(o != NULL, "should have been initialized"); | |
| 129 _NullPointerException_instance = get_object(o)->as_instance(); | |
| 130 o = Universe::arithmetic_exception_instance(); | |
| 131 assert(o != NULL, "should have been initialized"); | |
| 132 _ArithmeticException_instance = get_object(o)->as_instance(); | |
| 133 | |
| 134 _ArrayIndexOutOfBoundsException_instance = NULL; | |
| 135 _ArrayStoreException_instance = NULL; | |
| 136 _ClassCastException_instance = NULL; | |
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137 _the_null_string = NULL; |
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138 _the_min_jint_string = NULL; |
| 0 | 139 } |
| 140 | |
| 141 ciEnv::ciEnv(Arena* arena) { | |
| 142 ASSERT_IN_VM; | |
| 143 | |
| 144 // Set up ciEnv::current immediately, for the sake of ciObjectFactory, etc. | |
| 145 CompilerThread* current_thread = CompilerThread::current(); | |
| 146 assert(current_thread->env() == NULL, "must be"); | |
| 147 current_thread->set_env(this); | |
| 148 assert(ciEnv::current() == this, "sanity"); | |
| 149 | |
| 150 _oop_recorder = NULL; | |
| 151 _debug_info = NULL; | |
| 152 _dependencies = NULL; | |
| 153 _failure_reason = NULL; | |
| 154 _compilable = MethodCompilable_never; | |
| 155 _break_at_compile = false; | |
| 156 _compiler_data = NULL; | |
| 157 #ifndef PRODUCT | |
| 158 assert(firstEnv, "must be first"); | |
| 159 firstEnv = false; | |
| 160 #endif /* !PRODUCT */ | |
| 161 | |
| 162 _system_dictionary_modification_counter = 0; | |
| 163 _num_inlined_bytecodes = 0; | |
| 164 _task = NULL; | |
| 165 _log = NULL; | |
| 166 | |
| 167 // Temporary buffer for creating symbols and such. | |
| 168 _name_buffer = NULL; | |
| 169 _name_buffer_len = 0; | |
| 170 | |
| 171 _arena = arena; | |
| 172 _factory = new (_arena) ciObjectFactory(_arena, 128); | |
| 173 | |
| 174 // Preload commonly referenced system ciObjects. | |
| 175 | |
| 176 // During VM initialization, these instances have not yet been created. | |
| 177 // Assertions ensure that these instances are not accessed before | |
| 178 // their initialization. | |
| 179 | |
| 180 assert(Universe::is_fully_initialized(), "must be"); | |
| 181 | |
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182 _NullPointerException_instance = NULL; |
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183 _ArithmeticException_instance = NULL; |
| 0 | 184 _ArrayIndexOutOfBoundsException_instance = NULL; |
| 185 _ArrayStoreException_instance = NULL; | |
| 186 _ClassCastException_instance = NULL; | |
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187 _the_null_string = NULL; |
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188 _the_min_jint_string = NULL; |
| 0 | 189 } |
| 190 | |
| 191 ciEnv::~ciEnv() { | |
| 192 CompilerThread* current_thread = CompilerThread::current(); | |
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193 _factory->remove_symbols(); |
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194 // Need safepoint to clear the env on the thread. RedefineClasses might |
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195 // be reading it. |
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196 GUARDED_VM_ENTRY(current_thread->set_env(NULL);) |
| 0 | 197 } |
| 198 | |
| 199 // ------------------------------------------------------------------ | |
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200 // Cache Jvmti state |
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201 void ciEnv::cache_jvmti_state() { |
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202 VM_ENTRY_MARK; |
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203 // Get Jvmti capabilities under lock to get consistant values. |
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204 MutexLocker mu(JvmtiThreadState_lock); |
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205 _jvmti_can_hotswap_or_post_breakpoint = JvmtiExport::can_hotswap_or_post_breakpoint(); |
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206 _jvmti_can_access_local_variables = JvmtiExport::can_access_local_variables(); |
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207 _jvmti_can_post_on_exceptions = JvmtiExport::can_post_on_exceptions(); |
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208 } |
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209 |
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210 // ------------------------------------------------------------------ |
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211 // Cache DTrace flags |
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212 void ciEnv::cache_dtrace_flags() { |
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213 // Need lock? |
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214 _dtrace_extended_probes = ExtendedDTraceProbes; |
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215 if (_dtrace_extended_probes) { |
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216 _dtrace_monitor_probes = true; |
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217 _dtrace_method_probes = true; |
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218 _dtrace_alloc_probes = true; |
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219 } else { |
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220 _dtrace_monitor_probes = DTraceMonitorProbes; |
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221 _dtrace_method_probes = DTraceMethodProbes; |
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222 _dtrace_alloc_probes = DTraceAllocProbes; |
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223 } |
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224 } |
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225 |
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226 // ------------------------------------------------------------------ |
| 0 | 227 // helper for lazy exception creation |
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228 ciInstance* ciEnv::get_or_create_exception(jobject& handle, Symbol* name) { |
| 0 | 229 VM_ENTRY_MARK; |
| 230 if (handle == NULL) { | |
| 231 // Cf. universe.cpp, creation of Universe::_null_ptr_exception_instance. | |
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232 Klass* k = SystemDictionary::find(name, Handle(), Handle(), THREAD); |
| 0 | 233 jobject objh = NULL; |
| 234 if (!HAS_PENDING_EXCEPTION && k != NULL) { | |
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235 oop obj = InstanceKlass::cast(k)->allocate_instance(THREAD); |
| 0 | 236 if (!HAS_PENDING_EXCEPTION) |
| 237 objh = JNIHandles::make_global(obj); | |
| 238 } | |
| 239 if (HAS_PENDING_EXCEPTION) { | |
| 240 CLEAR_PENDING_EXCEPTION; | |
| 241 } else { | |
| 242 handle = objh; | |
| 243 } | |
| 244 } | |
| 245 oop obj = JNIHandles::resolve(handle); | |
| 246 return obj == NULL? NULL: get_object(obj)->as_instance(); | |
| 247 } | |
| 248 | |
| 249 ciInstance* ciEnv::ArrayIndexOutOfBoundsException_instance() { | |
| 250 if (_ArrayIndexOutOfBoundsException_instance == NULL) { | |
| 251 _ArrayIndexOutOfBoundsException_instance | |
| 252 = get_or_create_exception(_ArrayIndexOutOfBoundsException_handle, | |
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253 vmSymbols::java_lang_ArrayIndexOutOfBoundsException()); |
| 0 | 254 } |
| 255 return _ArrayIndexOutOfBoundsException_instance; | |
| 256 } | |
| 257 ciInstance* ciEnv::ArrayStoreException_instance() { | |
| 258 if (_ArrayStoreException_instance == NULL) { | |
| 259 _ArrayStoreException_instance | |
| 260 = get_or_create_exception(_ArrayStoreException_handle, | |
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261 vmSymbols::java_lang_ArrayStoreException()); |
| 0 | 262 } |
| 263 return _ArrayStoreException_instance; | |
| 264 } | |
| 265 ciInstance* ciEnv::ClassCastException_instance() { | |
| 266 if (_ClassCastException_instance == NULL) { | |
| 267 _ClassCastException_instance | |
| 268 = get_or_create_exception(_ClassCastException_handle, | |
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269 vmSymbols::java_lang_ClassCastException()); |
| 0 | 270 } |
| 271 return _ClassCastException_instance; | |
| 272 } | |
| 273 | |
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274 ciInstance* ciEnv::the_null_string() { |
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275 if (_the_null_string == NULL) { |
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276 VM_ENTRY_MARK; |
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277 _the_null_string = get_object(Universe::the_null_string())->as_instance(); |
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278 } |
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279 return _the_null_string; |
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280 } |
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281 |
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282 ciInstance* ciEnv::the_min_jint_string() { |
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283 if (_the_min_jint_string == NULL) { |
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284 VM_ENTRY_MARK; |
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285 _the_min_jint_string = get_object(Universe::the_min_jint_string())->as_instance(); |
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286 } |
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287 return _the_min_jint_string; |
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288 } |
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289 |
| 0 | 290 // ------------------------------------------------------------------ |
| 291 // ciEnv::get_method_from_handle | |
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292 ciMethod* ciEnv::get_method_from_handle(Method* method) { |
| 0 | 293 VM_ENTRY_MARK; |
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294 return get_metadata(method)->as_method(); |
| 0 | 295 } |
| 296 | |
| 297 // ------------------------------------------------------------------ | |
| 298 // ciEnv::array_element_offset_in_bytes | |
| 299 int ciEnv::array_element_offset_in_bytes(ciArray* a_h, ciObject* o_h) { | |
| 300 VM_ENTRY_MARK; | |
| 301 objArrayOop a = (objArrayOop)a_h->get_oop(); | |
| 302 assert(a->is_objArray(), ""); | |
| 303 int length = a->length(); | |
| 304 oop o = o_h->get_oop(); | |
| 305 for (int i = 0; i < length; i++) { | |
| 306 if (a->obj_at(i) == o) return i; | |
| 307 } | |
| 308 return -1; | |
| 309 } | |
| 310 | |
| 311 | |
| 312 // ------------------------------------------------------------------ | |
| 313 // ciEnv::check_klass_accessiblity | |
| 314 // | |
| 315 // Note: the logic of this method should mirror the logic of | |
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316 // ConstantPool::verify_constant_pool_resolve. |
| 0 | 317 bool ciEnv::check_klass_accessibility(ciKlass* accessing_klass, |
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318 Klass* resolved_klass) { |
| 0 | 319 if (accessing_klass == NULL || !accessing_klass->is_loaded()) { |
| 320 return true; | |
| 321 } | |
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322 if (accessing_klass->is_obj_array_klass()) { |
| 0 | 323 accessing_klass = accessing_klass->as_obj_array_klass()->base_element_klass(); |
| 324 } | |
| 325 if (!accessing_klass->is_instance_klass()) { | |
| 326 return true; | |
| 327 } | |
| 328 | |
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329 if (resolved_klass->oop_is_objArray()) { |
| 0 | 330 // Find the element klass, if this is an array. |
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331 resolved_klass = ObjArrayKlass::cast(resolved_klass)->bottom_klass(); |
| 0 | 332 } |
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333 if (resolved_klass->oop_is_instance()) { |
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334 return Reflection::verify_class_access(accessing_klass->get_Klass(), |
| 0 | 335 resolved_klass, |
| 336 true); | |
| 337 } | |
| 338 return true; | |
| 339 } | |
| 340 | |
| 341 // ------------------------------------------------------------------ | |
| 342 // ciEnv::get_klass_by_name_impl | |
| 343 ciKlass* ciEnv::get_klass_by_name_impl(ciKlass* accessing_klass, | |
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344 constantPoolHandle cpool, |
| 0 | 345 ciSymbol* name, |
| 346 bool require_local) { | |
| 347 ASSERT_IN_VM; | |
| 348 EXCEPTION_CONTEXT; | |
| 349 | |
| 350 // Now we need to check the SystemDictionary | |
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351 Symbol* sym = name->get_symbol(); |
| 0 | 352 if (sym->byte_at(0) == 'L' && |
| 353 sym->byte_at(sym->utf8_length()-1) == ';') { | |
| 354 // This is a name from a signature. Strip off the trimmings. | |
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355 // Call recursive to keep scope of strippedsym. |
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356 TempNewSymbol strippedsym = SymbolTable::new_symbol(sym->as_utf8()+1, |
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357 sym->utf8_length()-2, |
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358 KILL_COMPILE_ON_FATAL_(_unloaded_ciinstance_klass)); |
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359 ciSymbol* strippedname = get_symbol(strippedsym); |
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360 return get_klass_by_name_impl(accessing_klass, cpool, strippedname, require_local); |
| 0 | 361 } |
| 362 | |
| 363 // Check for prior unloaded klass. The SystemDictionary's answers | |
| 364 // can vary over time but the compiler needs consistency. | |
| 365 ciKlass* unloaded_klass = check_get_unloaded_klass(accessing_klass, name); | |
| 366 if (unloaded_klass != NULL) { | |
| 367 if (require_local) return NULL; | |
| 368 return unloaded_klass; | |
| 369 } | |
| 370 | |
| 371 Handle loader(THREAD, (oop)NULL); | |
| 372 Handle domain(THREAD, (oop)NULL); | |
| 373 if (accessing_klass != NULL) { | |
| 374 loader = Handle(THREAD, accessing_klass->loader()); | |
| 375 domain = Handle(THREAD, accessing_klass->protection_domain()); | |
| 376 } | |
| 377 | |
| 378 // setup up the proper type to return on OOM | |
| 379 ciKlass* fail_type; | |
| 380 if (sym->byte_at(0) == '[') { | |
| 381 fail_type = _unloaded_ciobjarrayklass; | |
| 382 } else { | |
| 383 fail_type = _unloaded_ciinstance_klass; | |
| 384 } | |
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385 KlassHandle found_klass; |
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386 { |
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387 ttyUnlocker ttyul; // release tty lock to avoid ordering problems |
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388 MutexLocker ml(Compile_lock); |
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389 Klass* kls; |
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390 if (!require_local) { |
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391 kls = SystemDictionary::find_constrained_instance_or_array_klass(sym, loader, |
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392 KILL_COMPILE_ON_FATAL_(fail_type)); |
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393 } else { |
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394 kls = SystemDictionary::find_instance_or_array_klass(sym, loader, domain, |
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395 KILL_COMPILE_ON_FATAL_(fail_type)); |
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396 } |
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397 found_klass = KlassHandle(THREAD, kls); |
| 0 | 398 } |
| 399 | |
| 400 // If we fail to find an array klass, look again for its element type. | |
| 401 // The element type may be available either locally or via constraints. | |
| 402 // In either case, if we can find the element type in the system dictionary, | |
| 403 // we must build an array type around it. The CI requires array klasses | |
| 404 // to be loaded if their element klasses are loaded, except when memory | |
| 405 // is exhausted. | |
| 406 if (sym->byte_at(0) == '[' && | |
| 407 (sym->byte_at(1) == '[' || sym->byte_at(1) == 'L')) { | |
| 408 // We have an unloaded array. | |
| 409 // Build it on the fly if the element class exists. | |
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410 TempNewSymbol elem_sym = SymbolTable::new_symbol(sym->as_utf8()+1, |
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411 sym->utf8_length()-1, |
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412 KILL_COMPILE_ON_FATAL_(fail_type)); |
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413 |
| 0 | 414 // Get element ciKlass recursively. |
| 415 ciKlass* elem_klass = | |
| 416 get_klass_by_name_impl(accessing_klass, | |
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417 cpool, |
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418 get_symbol(elem_sym), |
| 0 | 419 require_local); |
| 420 if (elem_klass != NULL && elem_klass->is_loaded()) { | |
| 421 // Now make an array for it | |
| 422 return ciObjArrayKlass::make_impl(elem_klass); | |
| 423 } | |
| 424 } | |
| 425 | |
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426 if (found_klass() == NULL && !cpool.is_null() && cpool->has_preresolution()) { |
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427 // Look inside the constant pool for pre-resolved class entries. |
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428 for (int i = cpool->length() - 1; i >= 1; i--) { |
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429 if (cpool->tag_at(i).is_klass()) { |
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430 Klass* kls = cpool->resolved_klass_at(i); |
| 6983 | 431 if (kls->name() == sym) { |
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432 found_klass = KlassHandle(THREAD, kls); |
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433 break; |
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434 } |
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435 } |
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436 } |
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437 } |
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438 |
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439 if (found_klass() != NULL) { |
| 0 | 440 // Found it. Build a CI handle. |
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441 return get_klass(found_klass()); |
| 0 | 442 } |
| 443 | |
| 444 if (require_local) return NULL; | |
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445 |
| 0 | 446 // Not yet loaded into the VM, or not governed by loader constraints. |
| 447 // Make a CI representative for it. | |
| 448 return get_unloaded_klass(accessing_klass, name); | |
| 449 } | |
| 450 | |
| 451 // ------------------------------------------------------------------ | |
| 452 // ciEnv::get_klass_by_name | |
| 453 ciKlass* ciEnv::get_klass_by_name(ciKlass* accessing_klass, | |
| 454 ciSymbol* klass_name, | |
| 455 bool require_local) { | |
| 456 GUARDED_VM_ENTRY(return get_klass_by_name_impl(accessing_klass, | |
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457 constantPoolHandle(), |
| 0 | 458 klass_name, |
| 459 require_local);) | |
| 460 } | |
| 461 | |
| 462 // ------------------------------------------------------------------ | |
| 463 // ciEnv::get_klass_by_index_impl | |
| 464 // | |
| 465 // Implementation of get_klass_by_index. | |
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466 ciKlass* ciEnv::get_klass_by_index_impl(constantPoolHandle cpool, |
| 0 | 467 int index, |
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468 bool& is_accessible, |
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469 ciInstanceKlass* accessor) { |
| 0 | 470 EXCEPTION_CONTEXT; |
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471 KlassHandle klass; // = NULL; |
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472 Symbol* klass_name = NULL; |
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473 |
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474 if (cpool->tag_at(index).is_symbol()) { |
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475 klass_name = cpool->symbol_at(index); |
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476 } else { |
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477 // Check if it's resolved if it's not a symbol constant pool entry. |
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478 klass = KlassHandle(THREAD, ConstantPool::klass_at_if_loaded(cpool, index)); |
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479 |
| 0 | 480 if (klass.is_null()) { |
| 481 // The klass has not been inserted into the constant pool. | |
| 482 // Try to look it up by name. | |
| 483 { | |
| 484 // We have to lock the cpool to keep the oop from being resolved | |
| 485 // while we are accessing it. | |
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486 MonitorLockerEx ml(cpool->lock()); |
| 0 | 487 constantTag tag = cpool->tag_at(index); |
| 488 if (tag.is_klass()) { | |
| 489 // The klass has been inserted into the constant pool | |
| 490 // very recently. | |
| 491 klass = KlassHandle(THREAD, cpool->resolved_klass_at(index)); | |
| 492 } else { | |
| 493 assert(cpool->tag_at(index).is_unresolved_klass(), "wrong tag"); | |
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494 klass_name = cpool->unresolved_klass_at(index); |
| 0 | 495 } |
| 496 } | |
| 497 } | |
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498 } |
| 0 | 499 |
| 500 if (klass.is_null()) { | |
| 501 // Not found in constant pool. Use the name to do the lookup. | |
| 502 ciKlass* k = get_klass_by_name_impl(accessor, | |
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503 cpool, |
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504 get_symbol(klass_name), |
| 0 | 505 false); |
| 506 // Calculate accessibility the hard way. | |
| 507 if (!k->is_loaded()) { | |
| 508 is_accessible = false; | |
| 509 } else if (k->loader() != accessor->loader() && | |
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510 get_klass_by_name_impl(accessor, cpool, k->name(), true) == NULL) { |
| 0 | 511 // Loaded only remotely. Not linked yet. |
| 512 is_accessible = false; | |
| 513 } else { | |
| 514 // Linked locally, and we must also check public/private, etc. | |
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515 is_accessible = check_klass_accessibility(accessor, k->get_Klass()); |
| 0 | 516 } |
| 517 return k; | |
| 518 } | |
| 519 | |
| 520 // Check for prior unloaded klass. The SystemDictionary's answers | |
| 521 // can vary over time but the compiler needs consistency. | |
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522 ciSymbol* name = get_symbol(klass()->name()); |
| 0 | 523 ciKlass* unloaded_klass = check_get_unloaded_klass(accessor, name); |
| 524 if (unloaded_klass != NULL) { | |
| 525 is_accessible = false; | |
| 526 return unloaded_klass; | |
| 527 } | |
| 528 | |
| 529 // It is known to be accessible, since it was found in the constant pool. | |
| 530 is_accessible = true; | |
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531 return get_klass(klass()); |
| 0 | 532 } |
| 533 | |
| 534 // ------------------------------------------------------------------ | |
| 535 // ciEnv::get_klass_by_index | |
| 536 // | |
| 537 // Get a klass from the constant pool. | |
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538 ciKlass* ciEnv::get_klass_by_index(constantPoolHandle cpool, |
| 0 | 539 int index, |
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540 bool& is_accessible, |
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541 ciInstanceKlass* accessor) { |
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542 GUARDED_VM_ENTRY(return get_klass_by_index_impl(cpool, index, is_accessible, accessor);) |
| 0 | 543 } |
| 544 | |
| 545 // ------------------------------------------------------------------ | |
| 546 // ciEnv::get_constant_by_index_impl | |
| 547 // | |
| 548 // Implementation of get_constant_by_index(). | |
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549 ciConstant ciEnv::get_constant_by_index_impl(constantPoolHandle cpool, |
| 1602 | 550 int pool_index, int cache_index, |
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551 ciInstanceKlass* accessor) { |
| 1602 | 552 bool ignore_will_link; |
| 0 | 553 EXCEPTION_CONTEXT; |
| 1602 | 554 int index = pool_index; |
| 555 if (cache_index >= 0) { | |
| 556 assert(index < 0, "only one kind of index at a time"); | |
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557 oop obj = cpool->resolved_references()->obj_at(cache_index); |
| 1602 | 558 if (obj != NULL) { |
| 559 ciObject* ciobj = get_object(obj); | |
| 560 return ciConstant(T_OBJECT, ciobj); | |
| 561 } | |
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562 index = cpool->object_to_cp_index(cache_index); |
| 1602 | 563 } |
| 0 | 564 constantTag tag = cpool->tag_at(index); |
| 565 if (tag.is_int()) { | |
| 566 return ciConstant(T_INT, (jint)cpool->int_at(index)); | |
| 567 } else if (tag.is_long()) { | |
| 568 return ciConstant((jlong)cpool->long_at(index)); | |
| 569 } else if (tag.is_float()) { | |
| 570 return ciConstant((jfloat)cpool->float_at(index)); | |
| 571 } else if (tag.is_double()) { | |
| 572 return ciConstant((jdouble)cpool->double_at(index)); | |
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573 } else if (tag.is_string()) { |
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574 oop string = NULL; |
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575 assert(cache_index >= 0, "should have a cache index"); |
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576 if (cpool->is_pseudo_string_at(index)) { |
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577 string = cpool->pseudo_string_at(index, cache_index); |
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578 } else { |
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579 string = cpool->string_at(index, cache_index, THREAD); |
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580 if (HAS_PENDING_EXCEPTION) { |
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581 CLEAR_PENDING_EXCEPTION; |
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582 record_out_of_memory_failure(); |
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583 return ciConstant(); |
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584 } |
| 0 | 585 } |
| 586 ciObject* constant = get_object(string); | |
| 587 assert (constant->is_instance(), "must be an instance, or not? "); | |
| 588 return ciConstant(T_OBJECT, constant); | |
| 589 } else if (tag.is_klass() || tag.is_unresolved_klass()) { | |
| 590 // 4881222: allow ldc to take a class type | |
| 1602 | 591 ciKlass* klass = get_klass_by_index_impl(cpool, index, ignore_will_link, accessor); |
| 0 | 592 if (HAS_PENDING_EXCEPTION) { |
| 593 CLEAR_PENDING_EXCEPTION; | |
| 594 record_out_of_memory_failure(); | |
| 595 return ciConstant(); | |
| 596 } | |
| 597 assert (klass->is_instance_klass() || klass->is_array_klass(), | |
| 598 "must be an instance or array klass "); | |
| 1602 | 599 return ciConstant(T_OBJECT, klass->java_mirror()); |
| 600 } else if (tag.is_method_type()) { | |
| 601 // must execute Java code to link this CP entry into cache[i].f1 | |
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602 ciSymbol* signature = get_symbol(cpool->method_type_signature_at(index)); |
| 1602 | 603 ciObject* ciobj = get_unloaded_method_type_constant(signature); |
| 604 return ciConstant(T_OBJECT, ciobj); | |
| 605 } else if (tag.is_method_handle()) { | |
| 606 // must execute Java code to link this CP entry into cache[i].f1 | |
| 607 int ref_kind = cpool->method_handle_ref_kind_at(index); | |
| 608 int callee_index = cpool->method_handle_klass_index_at(index); | |
| 609 ciKlass* callee = get_klass_by_index_impl(cpool, callee_index, ignore_will_link, accessor); | |
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610 ciSymbol* name = get_symbol(cpool->method_handle_name_ref_at(index)); |
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611 ciSymbol* signature = get_symbol(cpool->method_handle_signature_ref_at(index)); |
| 1602 | 612 ciObject* ciobj = get_unloaded_method_handle_constant(callee, name, signature, ref_kind); |
| 613 return ciConstant(T_OBJECT, ciobj); | |
| 0 | 614 } else { |
| 615 ShouldNotReachHere(); | |
| 616 return ciConstant(); | |
| 617 } | |
| 618 } | |
| 619 | |
| 620 // ------------------------------------------------------------------ | |
| 621 // ciEnv::get_constant_by_index | |
| 622 // | |
| 623 // Pull a constant out of the constant pool. How appropriate. | |
| 624 // | |
| 625 // Implementation note: this query is currently in no way cached. | |
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626 ciConstant ciEnv::get_constant_by_index(constantPoolHandle cpool, |
| 1602 | 627 int pool_index, int cache_index, |
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628 ciInstanceKlass* accessor) { |
| 1602 | 629 GUARDED_VM_ENTRY(return get_constant_by_index_impl(cpool, pool_index, cache_index, accessor);) |
| 0 | 630 } |
| 631 | |
| 632 // ------------------------------------------------------------------ | |
| 633 // ciEnv::get_field_by_index_impl | |
| 634 // | |
| 635 // Implementation of get_field_by_index. | |
| 636 // | |
| 637 // Implementation note: the results of field lookups are cached | |
| 638 // in the accessor klass. | |
| 639 ciField* ciEnv::get_field_by_index_impl(ciInstanceKlass* accessor, | |
| 640 int index) { | |
| 641 ciConstantPoolCache* cache = accessor->field_cache(); | |
| 642 if (cache == NULL) { | |
| 643 ciField* field = new (arena()) ciField(accessor, index); | |
| 644 return field; | |
| 645 } else { | |
| 646 ciField* field = (ciField*)cache->get(index); | |
| 647 if (field == NULL) { | |
| 648 field = new (arena()) ciField(accessor, index); | |
| 649 cache->insert(index, field); | |
| 650 } | |
| 651 return field; | |
| 652 } | |
| 653 } | |
| 654 | |
| 655 // ------------------------------------------------------------------ | |
| 656 // ciEnv::get_field_by_index | |
| 657 // | |
| 658 // Get a field by index from a klass's constant pool. | |
| 659 ciField* ciEnv::get_field_by_index(ciInstanceKlass* accessor, | |
| 660 int index) { | |
| 661 GUARDED_VM_ENTRY(return get_field_by_index_impl(accessor, index);) | |
| 662 } | |
| 663 | |
| 664 // ------------------------------------------------------------------ | |
| 665 // ciEnv::lookup_method | |
| 666 // | |
| 667 // Perform an appropriate method lookup based on accessor, holder, | |
| 668 // name, signature, and bytecode. | |
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669 Method* ciEnv::lookup_method(InstanceKlass* accessor, |
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670 InstanceKlass* holder, |
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671 Symbol* name, |
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672 Symbol* sig, |
| 0 | 673 Bytecodes::Code bc) { |
| 674 EXCEPTION_CONTEXT; | |
| 675 KlassHandle h_accessor(THREAD, accessor); | |
| 676 KlassHandle h_holder(THREAD, holder); | |
| 677 LinkResolver::check_klass_accessability(h_accessor, h_holder, KILL_COMPILE_ON_FATAL_(NULL)); | |
| 678 methodHandle dest_method; | |
| 679 switch (bc) { | |
| 680 case Bytecodes::_invokestatic: | |
| 681 dest_method = | |
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682 LinkResolver::resolve_static_call_or_null(h_holder, name, sig, h_accessor); |
| 0 | 683 break; |
| 684 case Bytecodes::_invokespecial: | |
| 685 dest_method = | |
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686 LinkResolver::resolve_special_call_or_null(h_holder, name, sig, h_accessor); |
| 0 | 687 break; |
| 688 case Bytecodes::_invokeinterface: | |
| 689 dest_method = | |
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690 LinkResolver::linktime_resolve_interface_method_or_null(h_holder, name, sig, |
| 0 | 691 h_accessor, true); |
| 692 break; | |
| 693 case Bytecodes::_invokevirtual: | |
| 694 dest_method = | |
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695 LinkResolver::linktime_resolve_virtual_method_or_null(h_holder, name, sig, |
| 0 | 696 h_accessor, true); |
| 697 break; | |
| 698 default: ShouldNotReachHere(); | |
| 699 } | |
| 700 | |
| 701 return dest_method(); | |
| 702 } | |
| 703 | |
| 704 | |
| 705 // ------------------------------------------------------------------ | |
| 706 // ciEnv::get_method_by_index_impl | |
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707 ciMethod* ciEnv::get_method_by_index_impl(constantPoolHandle cpool, |
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708 int index, Bytecodes::Code bc, |
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709 ciInstanceKlass* accessor) { |
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710 if (bc == Bytecodes::_invokedynamic) { |
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711 ConstantPoolCacheEntry* cpce = cpool->invokedynamic_cp_cache_entry_at(index); |
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712 bool is_resolved = !cpce->is_f1_null(); |
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713 // FIXME: code generation could allow for null (unlinked) call site |
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714 // The call site could be made patchable as follows: |
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715 // Load the appendix argument from the constant pool. |
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716 // Test the appendix argument and jump to a known deopt routine if it is null. |
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717 // Jump through a patchable call site, which is initially a deopt routine. |
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718 // Patch the call site to the nmethod entry point of the static compiled lambda form. |
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719 // As with other two-component call sites, both values must be independently verified. |
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720 |
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721 if (is_resolved) { |
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722 // Get the invoker Method* from the constant pool. |
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723 // (The appendix argument, if any, will be noted in the method's signature.) |
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724 Method* adapter = cpce->f1_as_method(); |
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725 return get_method(adapter); |
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726 } |
| 0 | 727 |
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728 // Fake a method that is equivalent to a declared method. |
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729 ciInstanceKlass* holder = get_instance_klass(SystemDictionary::MethodHandle_klass()); |
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730 ciSymbol* name = ciSymbol::invokeBasic_name(); |
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731 ciSymbol* signature = get_symbol(cpool->signature_ref_at(index)); |
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732 return get_unloaded_method(holder, name, signature, accessor); |
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733 } else { |
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734 const int holder_index = cpool->klass_ref_index_at(index); |
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735 bool holder_is_accessible; |
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736 ciKlass* holder = get_klass_by_index_impl(cpool, holder_index, holder_is_accessible, accessor); |
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737 ciInstanceKlass* declared_holder = get_instance_klass_for_declared_method_holder(holder); |
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738 |
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739 // Get the method's name and signature. |
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740 Symbol* name_sym = cpool->name_ref_at(index); |
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741 Symbol* sig_sym = cpool->signature_ref_at(index); |
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742 |
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743 if (cpool->has_preresolution() |
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744 || (holder == ciEnv::MethodHandle_klass() && |
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745 MethodHandles::is_signature_polymorphic_name(holder->get_Klass(), name_sym))) { |
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746 // Short-circuit lookups for JSR 292-related call sites. |
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747 // That is, do not rely only on name-based lookups, because they may fail |
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748 // if the names are not resolvable in the boot class loader (7056328). |
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749 switch (bc) { |
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750 case Bytecodes::_invokevirtual: |
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751 case Bytecodes::_invokeinterface: |
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752 case Bytecodes::_invokespecial: |
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753 case Bytecodes::_invokestatic: |
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754 { |
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755 Method* m = ConstantPool::method_at_if_loaded(cpool, index); |
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756 if (m != NULL) { |
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757 return get_method(m); |
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758 } |
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759 } |
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760 break; |
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761 } |
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762 } |
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763 |
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764 if (holder_is_accessible) { // Our declared holder is loaded. |
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765 InstanceKlass* lookup = declared_holder->get_instanceKlass(); |
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766 Method* m = lookup_method(accessor->get_instanceKlass(), lookup, name_sym, sig_sym, bc); |
|
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767 if (m != NULL && |
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768 (bc == Bytecodes::_invokestatic |
|
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769 ? m->method_holder()->is_not_initialized() |
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770 : !m->method_holder()->is_loaded())) { |
|
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771 m = NULL; |
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772 } |
|
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773 #ifdef ASSERT |
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774 if (m != NULL && ReplayCompiles && !ciReplay::is_loaded(m)) { |
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775 m = NULL; |
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776 } |
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777 #endif |
|
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778 if (m != NULL) { |
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779 // We found the method. |
|
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780 return get_method(m); |
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781 } |
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782 } |
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783 |
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784 // Either the declared holder was not loaded, or the method could |
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785 // not be found. Create a dummy ciMethod to represent the failed |
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786 // lookup. |
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787 ciSymbol* name = get_symbol(name_sym); |
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788 ciSymbol* signature = get_symbol(sig_sym); |
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789 return get_unloaded_method(declared_holder, name, signature, accessor); |
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790 } |
|
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791 } |
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792 |
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793 |
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794 // ------------------------------------------------------------------ |
| 0 | 795 // ciEnv::get_instance_klass_for_declared_method_holder |
| 796 ciInstanceKlass* ciEnv::get_instance_klass_for_declared_method_holder(ciKlass* method_holder) { | |
| 797 // For the case of <array>.clone(), the method holder can be a ciArrayKlass | |
| 798 // instead of a ciInstanceKlass. For that case simply pretend that the | |
| 799 // declared holder is Object.clone since that's where the call will bottom out. | |
| 800 // A more correct fix would trickle out through many interfaces in CI, | |
| 801 // requiring ciInstanceKlass* to become ciKlass* and many more places would | |
| 802 // require checks to make sure the expected type was found. Given that this | |
| 803 // only occurs for clone() the more extensive fix seems like overkill so | |
| 804 // instead we simply smear the array type into Object. | |
| 805 if (method_holder->is_instance_klass()) { | |
| 806 return method_holder->as_instance_klass(); | |
| 807 } else if (method_holder->is_array_klass()) { | |
| 808 return current()->Object_klass(); | |
| 809 } else { | |
| 810 ShouldNotReachHere(); | |
| 811 } | |
| 812 return NULL; | |
| 813 } | |
| 814 | |
| 815 | |
| 816 // ------------------------------------------------------------------ | |
| 817 // ciEnv::get_method_by_index | |
|
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818 ciMethod* ciEnv::get_method_by_index(constantPoolHandle cpool, |
|
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819 int index, Bytecodes::Code bc, |
|
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820 ciInstanceKlass* accessor) { |
|
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821 GUARDED_VM_ENTRY(return get_method_by_index_impl(cpool, index, bc, accessor);) |
| 0 | 822 } |
| 823 | |
|
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824 |
| 0 | 825 // ------------------------------------------------------------------ |
| 826 // ciEnv::name_buffer | |
| 827 char *ciEnv::name_buffer(int req_len) { | |
| 828 if (_name_buffer_len < req_len) { | |
| 829 if (_name_buffer == NULL) { | |
| 830 _name_buffer = (char*)arena()->Amalloc(sizeof(char)*req_len); | |
| 831 _name_buffer_len = req_len; | |
| 832 } else { | |
| 833 _name_buffer = | |
| 834 (char*)arena()->Arealloc(_name_buffer, _name_buffer_len, req_len); | |
| 835 _name_buffer_len = req_len; | |
| 836 } | |
| 837 } | |
| 838 return _name_buffer; | |
| 839 } | |
| 840 | |
| 841 // ------------------------------------------------------------------ | |
| 842 // ciEnv::is_in_vm | |
| 843 bool ciEnv::is_in_vm() { | |
| 844 return JavaThread::current()->thread_state() == _thread_in_vm; | |
| 845 } | |
| 846 | |
| 847 bool ciEnv::system_dictionary_modification_counter_changed() { | |
| 848 return _system_dictionary_modification_counter != SystemDictionary::number_of_modifications(); | |
| 849 } | |
| 850 | |
| 851 // ------------------------------------------------------------------ | |
|
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852 // ciEnv::validate_compile_task_dependencies |
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853 // |
|
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854 // Check for changes during compilation (e.g. class loads, evolution, |
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855 // breakpoints, call site invalidation). |
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856 void ciEnv::validate_compile_task_dependencies(ciMethod* target) { |
| 0 | 857 if (failing()) return; // no need for further checks |
| 858 | |
|
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859 // First, check non-klass dependencies as we might return early and |
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860 // not check klass dependencies if the system dictionary |
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861 // modification counter hasn't changed (see below). |
|
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862 for (Dependencies::DepStream deps(dependencies()); deps.next(); ) { |
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863 if (deps.is_klass_type()) continue; // skip klass dependencies |
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864 Klass* witness = deps.check_dependency(); |
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865 if (witness != NULL) { |
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866 record_failure("invalid non-klass dependency"); |
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867 return; |
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868 } |
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869 } |
| 0 | 870 |
|
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871 // Klass dependencies must be checked when the system dictionary |
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872 // changes. If logging is enabled all violated dependences will be |
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873 // recorded in the log. In debug mode check dependencies even if |
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874 // the system dictionary hasn't changed to verify that no invalid |
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875 // dependencies were inserted. Any violated dependences in this |
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876 // case are dumped to the tty. |
| 0 | 877 bool counter_changed = system_dictionary_modification_counter_changed(); |
| 878 | |
| 3959 | 879 bool verify_deps = trueInDebug; |
| 880 if (!counter_changed && !verify_deps) return; | |
| 881 | |
|
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882 int klass_violations = 0; |
| 0 | 883 for (Dependencies::DepStream deps(dependencies()); deps.next(); ) { |
|
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884 if (!deps.is_klass_type()) continue; // skip non-klass dependencies |
|
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885 Klass* witness = deps.check_dependency(); |
| 0 | 886 if (witness != NULL) { |
|
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887 klass_violations++; |
| 3959 | 888 if (!counter_changed) { |
| 889 // Dependence failed but counter didn't change. Log a message | |
| 890 // describing what failed and allow the assert at the end to | |
| 891 // trigger. | |
| 892 deps.print_dependency(witness); | |
| 893 } else if (xtty == NULL) { | |
| 894 // If we're not logging then a single violation is sufficient, | |
| 895 // otherwise we want to log all the dependences which were | |
| 896 // violated. | |
| 897 break; | |
| 898 } | |
| 0 | 899 } |
| 900 } | |
| 901 | |
|
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902 if (klass_violations != 0) { |
| 3959 | 903 #ifdef ASSERT |
| 904 if (!counter_changed && !PrintCompilation) { | |
| 905 // Print out the compile task that failed | |
| 906 _task->print_line(); | |
| 907 } | |
| 908 #endif | |
| 0 | 909 assert(counter_changed, "failed dependencies, but counter didn't change"); |
| 910 record_failure("concurrent class loading"); | |
| 911 } | |
| 912 } | |
| 913 | |
| 914 // ------------------------------------------------------------------ | |
| 915 // ciEnv::register_method | |
| 916 void ciEnv::register_method(ciMethod* target, | |
| 917 int entry_bci, | |
| 918 CodeOffsets* offsets, | |
| 919 int orig_pc_offset, | |
| 920 CodeBuffer* code_buffer, | |
| 921 int frame_words, | |
| 922 OopMapSet* oop_map_set, | |
| 923 ExceptionHandlerTable* handler_table, | |
| 924 ImplicitExceptionTable* inc_table, | |
| 925 AbstractCompiler* compiler, | |
| 926 int comp_level, | |
|
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927 bool has_unsafe_access, |
|
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928 bool has_wide_vectors) { |
| 0 | 929 VM_ENTRY_MARK; |
| 930 nmethod* nm = NULL; | |
| 931 { | |
| 932 // To prevent compile queue updates. | |
| 933 MutexLocker locker(MethodCompileQueue_lock, THREAD); | |
| 934 | |
| 935 // Prevent SystemDictionary::add_to_hierarchy from running | |
| 936 // and invalidating our dependencies until we install this method. | |
| 937 MutexLocker ml(Compile_lock); | |
| 938 | |
|
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939 // Change in Jvmti state may invalidate compilation. |
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940 if (!failing() && |
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941 ( (!jvmti_can_hotswap_or_post_breakpoint() && |
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942 JvmtiExport::can_hotswap_or_post_breakpoint()) || |
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943 (!jvmti_can_access_local_variables() && |
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944 JvmtiExport::can_access_local_variables()) || |
|
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945 (!jvmti_can_post_on_exceptions() && |
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946 JvmtiExport::can_post_on_exceptions()) )) { |
|
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947 record_failure("Jvmti state change invalidated dependencies"); |
| 0 | 948 } |
| 949 | |
|
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950 // Change in DTrace flags may invalidate compilation. |
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951 if (!failing() && |
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952 ( (!dtrace_extended_probes() && ExtendedDTraceProbes) || |
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953 (!dtrace_method_probes() && DTraceMethodProbes) || |
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954 (!dtrace_alloc_probes() && DTraceAllocProbes) )) { |
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955 record_failure("DTrace flags change invalidated dependencies"); |
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956 } |
| 0 | 957 |
|
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958 if (!failing()) { |
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959 if (log() != NULL) { |
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960 // Log the dependencies which this compilation declares. |
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961 dependencies()->log_all_dependencies(); |
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962 } |
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963 |
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964 // Encode the dependencies now, so we can check them right away. |
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965 dependencies()->encode_content_bytes(); |
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966 |
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967 // Check for {class loads, evolution, breakpoints, ...} during compilation |
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968 validate_compile_task_dependencies(target); |
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969 } |
| 0 | 970 |
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971 methodHandle method(THREAD, target->get_Method()); |
| 0 | 972 |
| 973 if (failing()) { | |
| 974 // While not a true deoptimization, it is a preemptive decompile. | |
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975 MethodData* mdo = method()->method_data(); |
| 0 | 976 if (mdo != NULL) { |
| 977 mdo->inc_decompile_count(); | |
| 978 } | |
| 979 | |
| 980 // All buffers in the CodeBuffer are allocated in the CodeCache. | |
| 981 // If the code buffer is created on each compile attempt | |
| 982 // as in C2, then it must be freed. | |
| 983 code_buffer->free_blob(); | |
| 984 return; | |
| 985 } | |
| 986 | |
| 987 assert(offsets->value(CodeOffsets::Deopt) != -1, "must have deopt entry"); | |
| 988 assert(offsets->value(CodeOffsets::Exceptions) != -1, "must have exception entry"); | |
| 989 | |
| 990 nm = nmethod::new_nmethod(method, | |
| 991 compile_id(), | |
| 992 entry_bci, | |
| 993 offsets, | |
| 994 orig_pc_offset, | |
| 995 debug_info(), dependencies(), code_buffer, | |
| 996 frame_words, oop_map_set, | |
| 997 handler_table, inc_table, | |
| 998 compiler, comp_level); | |
| 999 | |
| 1000 // Free codeBlobs | |
| 1001 code_buffer->free_blob(); | |
| 1002 | |
| 1003 // stress test 6243940 by immediately making the method | |
| 1004 // non-entrant behind the system's back. This has serious | |
| 1005 // side effects on the code cache and is not meant for | |
| 1006 // general stress testing | |
| 1007 if (nm != NULL && StressNonEntrant) { | |
| 1008 MutexLockerEx pl(Patching_lock, Mutex::_no_safepoint_check_flag); | |
| 1009 NativeJump::patch_verified_entry(nm->entry_point(), nm->verified_entry_point(), | |
| 1010 SharedRuntime::get_handle_wrong_method_stub()); | |
| 1011 } | |
| 1012 | |
| 1013 if (nm == NULL) { | |
| 1014 // The CodeCache is full. Print out warning and disable compilation. | |
| 1015 record_failure("code cache is full"); | |
| 1202 | 1016 { |
| 1017 MutexUnlocker ml(Compile_lock); | |
| 1018 MutexUnlocker locker(MethodCompileQueue_lock); | |
| 1019 CompileBroker::handle_full_code_cache(); | |
| 0 | 1020 } |
| 1021 } else { | |
| 1022 nm->set_has_unsafe_access(has_unsafe_access); | |
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1023 nm->set_has_wide_vectors(has_wide_vectors); |
| 0 | 1024 |
| 1025 // Record successful registration. | |
| 1026 // (Put nm into the task handle *before* publishing to the Java heap.) | |
| 1027 if (task() != NULL) task()->set_code(nm); | |
| 1028 | |
| 1029 if (entry_bci == InvocationEntryBci) { | |
| 1783 | 1030 if (TieredCompilation) { |
| 1031 // If there is an old version we're done with it | |
| 1032 nmethod* old = method->code(); | |
| 1033 if (TraceMethodReplacement && old != NULL) { | |
| 1034 ResourceMark rm; | |
| 1035 char *method_name = method->name_and_sig_as_C_string(); | |
| 1036 tty->print_cr("Replacing method %s", method_name); | |
| 1037 } | |
| 1038 if (old != NULL ) { | |
| 1039 old->make_not_entrant(); | |
| 1040 } | |
| 0 | 1041 } |
| 1042 if (TraceNMethodInstalls ) { | |
| 1043 ResourceMark rm; | |
| 1044 char *method_name = method->name_and_sig_as_C_string(); | |
| 1045 ttyLocker ttyl; | |
| 1046 tty->print_cr("Installing method (%d) %s ", | |
| 1047 comp_level, | |
| 1048 method_name); | |
| 1049 } | |
| 1050 // Allow the code to be executed | |
| 1051 method->set_code(method, nm); | |
| 1052 } else { | |
| 1053 if (TraceNMethodInstalls ) { | |
| 1054 ResourceMark rm; | |
| 1055 char *method_name = method->name_and_sig_as_C_string(); | |
| 1056 ttyLocker ttyl; | |
| 1057 tty->print_cr("Installing osr method (%d) %s @ %d", | |
| 1058 comp_level, | |
| 1059 method_name, | |
| 1060 entry_bci); | |
| 1061 } | |
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1062 method->method_holder()->add_osr_nmethod(nm); |
| 0 | 1063 |
| 1064 } | |
| 1065 } | |
| 1066 } | |
| 1067 // JVMTI -- compiled method notification (must be done outside lock) | |
| 1068 if (nm != NULL) { | |
| 1069 nm->post_compiled_method_load_event(); | |
| 1070 } | |
| 1071 | |
| 1072 } | |
| 1073 | |
| 1074 | |
| 1075 // ------------------------------------------------------------------ | |
| 1076 // ciEnv::find_system_klass | |
| 1077 ciKlass* ciEnv::find_system_klass(ciSymbol* klass_name) { | |
| 1078 VM_ENTRY_MARK; | |
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1079 return get_klass_by_name_impl(NULL, constantPoolHandle(), klass_name, false); |
| 0 | 1080 } |
| 1081 | |
| 1082 // ------------------------------------------------------------------ | |
| 1083 // ciEnv::comp_level | |
| 1084 int ciEnv::comp_level() { | |
| 1783 | 1085 if (task() == NULL) return CompLevel_highest_tier; |
| 0 | 1086 return task()->comp_level(); |
| 1087 } | |
| 1088 | |
| 1089 // ------------------------------------------------------------------ | |
| 1090 // ciEnv::compile_id | |
| 1091 uint ciEnv::compile_id() { | |
| 1092 if (task() == NULL) return 0; | |
| 1093 return task()->compile_id(); | |
| 1094 } | |
| 1095 | |
| 1096 // ------------------------------------------------------------------ | |
| 1097 // ciEnv::notice_inlined_method() | |
| 1098 void ciEnv::notice_inlined_method(ciMethod* method) { | |
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1099 _num_inlined_bytecodes += method->code_size_for_inlining(); |
| 0 | 1100 } |
| 1101 | |
| 1102 // ------------------------------------------------------------------ | |
| 1103 // ciEnv::num_inlined_bytecodes() | |
| 1104 int ciEnv::num_inlined_bytecodes() const { | |
| 1105 return _num_inlined_bytecodes; | |
| 1106 } | |
| 1107 | |
| 1108 // ------------------------------------------------------------------ | |
| 1109 // ciEnv::record_failure() | |
| 1110 void ciEnv::record_failure(const char* reason) { | |
| 1111 if (log() != NULL) { | |
| 1112 log()->elem("failure reason='%s'", reason); | |
| 1113 } | |
| 1114 if (_failure_reason == NULL) { | |
| 1115 // Record the first failure reason. | |
| 1116 _failure_reason = reason; | |
| 1117 } | |
| 1118 } | |
| 1119 | |
| 1120 // ------------------------------------------------------------------ | |
| 1121 // ciEnv::record_method_not_compilable() | |
| 1122 void ciEnv::record_method_not_compilable(const char* reason, bool all_tiers) { | |
| 1123 int new_compilable = | |
| 1124 all_tiers ? MethodCompilable_never : MethodCompilable_not_at_tier ; | |
| 1125 | |
| 1126 // Only note transitions to a worse state | |
| 1127 if (new_compilable > _compilable) { | |
| 1128 if (log() != NULL) { | |
| 1129 if (all_tiers) { | |
| 1130 log()->elem("method_not_compilable"); | |
| 1131 } else { | |
| 6843 | 1132 log()->elem("method_not_compilable_at_tier level='%d'", |
| 1133 current()->task()->comp_level()); | |
| 0 | 1134 } |
| 1135 } | |
| 1136 _compilable = new_compilable; | |
| 1137 | |
| 1138 // Reset failure reason; this one is more important. | |
| 1139 _failure_reason = NULL; | |
| 1140 record_failure(reason); | |
| 1141 } | |
| 1142 } | |
| 1143 | |
| 1144 // ------------------------------------------------------------------ | |
| 1145 // ciEnv::record_out_of_memory_failure() | |
| 1146 void ciEnv::record_out_of_memory_failure() { | |
| 1147 // If memory is low, we stop compiling methods. | |
| 1148 record_method_not_compilable("out of memory"); | |
| 1149 } | |
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1150 |
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1151 fileStream* ciEnv::_replay_data_stream = NULL; |
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1152 |
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1153 void ciEnv::dump_replay_data() { |
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1154 VM_ENTRY_MARK; |
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1155 MutexLocker ml(Compile_lock); |
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1156 if (_replay_data_stream == NULL) { |
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1157 _replay_data_stream = new (ResourceObj::C_HEAP, mtCompiler) fileStream(ReplayDataFile); |
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1158 if (_replay_data_stream == NULL) { |
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1159 fatal(err_msg("Can't open %s for replay data", ReplayDataFile)); |
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1160 } |
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1161 } |
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1162 dump_replay_data(_replay_data_stream); |
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1163 } |
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1164 |
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1165 |
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1166 void ciEnv::dump_replay_data(outputStream* out) { |
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1167 ASSERT_IN_VM; |
|
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1168 ResourceMark rm; |
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1169 #if INCLUDE_JVMTI |
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1170 out->print_cr("JvmtiExport can_access_local_variables %d", _jvmti_can_access_local_variables); |
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1171 out->print_cr("JvmtiExport can_hotswap_or_post_breakpoint %d", _jvmti_can_hotswap_or_post_breakpoint); |
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1172 out->print_cr("JvmtiExport can_post_on_exceptions %d", _jvmti_can_post_on_exceptions); |
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1173 #endif // INCLUDE_JVMTI |
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1174 |
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1175 GrowableArray<ciMetadata*>* objects = _factory->get_ci_metadata(); |
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1176 out->print_cr("# %d ciObject found", objects->length()); |
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1177 for (int i = 0; i < objects->length(); i++) { |
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1178 objects->at(i)->dump_replay_data(out); |
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1179 } |
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1180 Method* method = task()->method(); |
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1181 int entry_bci = task()->osr_bci(); |
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1182 // Klass holder = method->method_holder(); |
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1183 out->print_cr("compile %s %s %s %d", |
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1184 method->klass_name()->as_quoted_ascii(), |
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1185 method->name()->as_quoted_ascii(), |
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1186 method->signature()->as_quoted_ascii(), |
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1187 entry_bci); |
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1188 out->flush(); |
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1189 } |