Mercurial > hg > truffle
annotate src/share/vm/ci/ciEnv.cpp @ 20804:7848fc12602b
Merge with jdk8u40-b25
| author | Gilles Duboscq <gilles.m.duboscq@oracle.com> |
|---|---|
| date | Tue, 07 Apr 2015 14:58:49 +0200 |
| parents | 52b4284cb496 9dc314de223d |
| children |
| rev | line source |
|---|---|
| 0 | 1 /* |
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2 * Copyright (c) 1999, 2014, 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" | |
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54 #include "runtime/thread.inline.hpp" |
| 1972 | 55 #include "utilities/dtrace.hpp" |
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56 #include "utilities/macros.hpp" |
| 1972 | 57 #ifdef COMPILER1 |
| 58 #include "c1/c1_Runtime1.hpp" | |
| 59 #endif | |
| 60 #ifdef COMPILER2 | |
| 61 #include "opto/runtime.hpp" | |
| 62 #endif | |
| 0 | 63 |
| 64 // ciEnv | |
| 65 // | |
| 66 // This class is the top level broker for requests from the compiler | |
| 67 // to the VM. | |
| 68 | |
| 69 ciObject* ciEnv::_null_object_instance; | |
| 70 | |
| 1142 | 71 #define WK_KLASS_DEFN(name, ignore_s, ignore_o) ciInstanceKlass* ciEnv::_##name = NULL; |
| 72 WK_KLASSES_DO(WK_KLASS_DEFN) | |
| 73 #undef WK_KLASS_DEFN | |
| 0 | 74 |
| 75 ciSymbol* ciEnv::_unloaded_cisymbol = NULL; | |
| 76 ciInstanceKlass* ciEnv::_unloaded_ciinstance_klass = NULL; | |
| 77 ciObjArrayKlass* ciEnv::_unloaded_ciobjarrayklass = NULL; | |
| 78 | |
| 79 jobject ciEnv::_ArrayIndexOutOfBoundsException_handle = NULL; | |
| 80 jobject ciEnv::_ArrayStoreException_handle = NULL; | |
| 81 jobject ciEnv::_ClassCastException_handle = NULL; | |
| 82 | |
| 83 #ifndef PRODUCT | |
| 84 static bool firstEnv = true; | |
| 85 #endif /* PRODUCT */ | |
| 86 | |
| 87 // ------------------------------------------------------------------ | |
| 88 // ciEnv::ciEnv | |
| 20360 | 89 ciEnv::ciEnv(CompileTask* task, int system_dictionary_modification_counter) |
| 90 : _ciEnv_arena(mtCompiler) { | |
| 0 | 91 VM_ENTRY_MARK; |
| 92 | |
| 93 // Set up ciEnv::current immediately, for the sake of ciObjectFactory, etc. | |
| 94 thread->set_env(this); | |
| 95 assert(ciEnv::current() == this, "sanity"); | |
| 96 | |
| 97 _oop_recorder = NULL; | |
| 98 _debug_info = NULL; | |
| 99 _dependencies = NULL; | |
| 100 _failure_reason = NULL; | |
| 101 _compilable = MethodCompilable; | |
| 102 _break_at_compile = false; | |
| 103 _compiler_data = NULL; | |
| 104 #ifndef PRODUCT | |
| 105 assert(!firstEnv, "not initialized properly"); | |
| 106 #endif /* !PRODUCT */ | |
| 107 | |
| 108 _system_dictionary_modification_counter = system_dictionary_modification_counter; | |
| 109 _num_inlined_bytecodes = 0; | |
| 110 assert(task == NULL || thread->task() == task, "sanity"); | |
| 111 _task = task; | |
| 112 _log = NULL; | |
| 113 | |
| 114 // Temporary buffer for creating symbols and such. | |
| 115 _name_buffer = NULL; | |
| 116 _name_buffer_len = 0; | |
| 117 | |
| 118 _arena = &_ciEnv_arena; | |
| 119 _factory = new (_arena) ciObjectFactory(_arena, 128); | |
| 120 | |
| 121 // Preload commonly referenced system ciObjects. | |
| 122 | |
| 123 // During VM initialization, these instances have not yet been created. | |
| 124 // Assertions ensure that these instances are not accessed before | |
| 125 // their initialization. | |
| 126 | |
| 127 assert(Universe::is_fully_initialized(), "should be complete"); | |
| 128 | |
| 129 oop o = Universe::null_ptr_exception_instance(); | |
| 130 assert(o != NULL, "should have been initialized"); | |
| 131 _NullPointerException_instance = get_object(o)->as_instance(); | |
| 132 o = Universe::arithmetic_exception_instance(); | |
| 133 assert(o != NULL, "should have been initialized"); | |
| 134 _ArithmeticException_instance = get_object(o)->as_instance(); | |
| 135 | |
| 136 _ArrayIndexOutOfBoundsException_instance = NULL; | |
| 137 _ArrayStoreException_instance = NULL; | |
| 138 _ClassCastException_instance = NULL; | |
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139 _the_null_string = NULL; |
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140 _the_min_jint_string = NULL; |
| 0 | 141 } |
| 142 | |
| 20360 | 143 ciEnv::ciEnv(Arena* arena) : _ciEnv_arena(mtCompiler) { |
| 0 | 144 ASSERT_IN_VM; |
| 145 | |
| 146 // Set up ciEnv::current immediately, for the sake of ciObjectFactory, etc. | |
| 147 CompilerThread* current_thread = CompilerThread::current(); | |
| 148 assert(current_thread->env() == NULL, "must be"); | |
| 149 current_thread->set_env(this); | |
| 150 assert(ciEnv::current() == this, "sanity"); | |
| 151 | |
| 152 _oop_recorder = NULL; | |
| 153 _debug_info = NULL; | |
| 154 _dependencies = NULL; | |
| 155 _failure_reason = NULL; | |
| 156 _compilable = MethodCompilable_never; | |
| 157 _break_at_compile = false; | |
| 158 _compiler_data = NULL; | |
| 159 #ifndef PRODUCT | |
| 160 assert(firstEnv, "must be first"); | |
| 161 firstEnv = false; | |
| 162 #endif /* !PRODUCT */ | |
| 163 | |
| 164 _system_dictionary_modification_counter = 0; | |
| 165 _num_inlined_bytecodes = 0; | |
| 166 _task = NULL; | |
| 167 _log = NULL; | |
| 168 | |
| 169 // Temporary buffer for creating symbols and such. | |
| 170 _name_buffer = NULL; | |
| 171 _name_buffer_len = 0; | |
| 172 | |
| 173 _arena = arena; | |
| 174 _factory = new (_arena) ciObjectFactory(_arena, 128); | |
| 175 | |
| 176 // Preload commonly referenced system ciObjects. | |
| 177 | |
| 178 // During VM initialization, these instances have not yet been created. | |
| 179 // Assertions ensure that these instances are not accessed before | |
| 180 // their initialization. | |
| 181 | |
| 182 assert(Universe::is_fully_initialized(), "must be"); | |
| 183 | |
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184 _NullPointerException_instance = NULL; |
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185 _ArithmeticException_instance = NULL; |
| 0 | 186 _ArrayIndexOutOfBoundsException_instance = NULL; |
| 187 _ArrayStoreException_instance = NULL; | |
| 188 _ClassCastException_instance = NULL; | |
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189 _the_null_string = NULL; |
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190 _the_min_jint_string = NULL; |
| 0 | 191 } |
| 192 | |
| 193 ciEnv::~ciEnv() { | |
| 194 CompilerThread* current_thread = CompilerThread::current(); | |
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195 _factory->remove_symbols(); |
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196 // Need safepoint to clear the env on the thread. RedefineClasses might |
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197 // be reading it. |
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198 GUARDED_VM_ENTRY(current_thread->set_env(NULL);) |
| 0 | 199 } |
| 200 | |
| 201 // ------------------------------------------------------------------ | |
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202 // Cache Jvmti state |
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203 void ciEnv::cache_jvmti_state() { |
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204 VM_ENTRY_MARK; |
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205 // Get Jvmti capabilities under lock to get consistant values. |
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206 MutexLocker mu(JvmtiThreadState_lock); |
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207 _jvmti_can_hotswap_or_post_breakpoint = JvmtiExport::can_hotswap_or_post_breakpoint(); |
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208 _jvmti_can_access_local_variables = JvmtiExport::can_access_local_variables(); |
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209 _jvmti_can_post_on_exceptions = JvmtiExport::can_post_on_exceptions(); |
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210 } |
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211 |
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212 // ------------------------------------------------------------------ |
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213 // Cache DTrace flags |
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214 void ciEnv::cache_dtrace_flags() { |
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215 // Need lock? |
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216 _dtrace_extended_probes = ExtendedDTraceProbes; |
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217 if (_dtrace_extended_probes) { |
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218 _dtrace_monitor_probes = true; |
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219 _dtrace_method_probes = true; |
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220 _dtrace_alloc_probes = true; |
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221 } else { |
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222 _dtrace_monitor_probes = DTraceMonitorProbes; |
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223 _dtrace_method_probes = DTraceMethodProbes; |
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224 _dtrace_alloc_probes = DTraceAllocProbes; |
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225 } |
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226 } |
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227 |
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228 // ------------------------------------------------------------------ |
| 0 | 229 // helper for lazy exception creation |
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230 ciInstance* ciEnv::get_or_create_exception(jobject& handle, Symbol* name) { |
| 0 | 231 VM_ENTRY_MARK; |
| 232 if (handle == NULL) { | |
| 233 // Cf. universe.cpp, creation of Universe::_null_ptr_exception_instance. | |
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234 Klass* k = SystemDictionary::find(name, Handle(), Handle(), THREAD); |
| 0 | 235 jobject objh = NULL; |
| 236 if (!HAS_PENDING_EXCEPTION && k != NULL) { | |
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237 oop obj = InstanceKlass::cast(k)->allocate_instance(THREAD); |
| 0 | 238 if (!HAS_PENDING_EXCEPTION) |
| 239 objh = JNIHandles::make_global(obj); | |
| 240 } | |
| 241 if (HAS_PENDING_EXCEPTION) { | |
| 242 CLEAR_PENDING_EXCEPTION; | |
| 243 } else { | |
| 244 handle = objh; | |
| 245 } | |
| 246 } | |
| 247 oop obj = JNIHandles::resolve(handle); | |
| 248 return obj == NULL? NULL: get_object(obj)->as_instance(); | |
| 249 } | |
| 250 | |
| 251 ciInstance* ciEnv::ArrayIndexOutOfBoundsException_instance() { | |
| 252 if (_ArrayIndexOutOfBoundsException_instance == NULL) { | |
| 253 _ArrayIndexOutOfBoundsException_instance | |
| 254 = get_or_create_exception(_ArrayIndexOutOfBoundsException_handle, | |
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255 vmSymbols::java_lang_ArrayIndexOutOfBoundsException()); |
| 0 | 256 } |
| 257 return _ArrayIndexOutOfBoundsException_instance; | |
| 258 } | |
| 259 ciInstance* ciEnv::ArrayStoreException_instance() { | |
| 260 if (_ArrayStoreException_instance == NULL) { | |
| 261 _ArrayStoreException_instance | |
| 262 = get_or_create_exception(_ArrayStoreException_handle, | |
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263 vmSymbols::java_lang_ArrayStoreException()); |
| 0 | 264 } |
| 265 return _ArrayStoreException_instance; | |
| 266 } | |
| 267 ciInstance* ciEnv::ClassCastException_instance() { | |
| 268 if (_ClassCastException_instance == NULL) { | |
| 269 _ClassCastException_instance | |
| 270 = get_or_create_exception(_ClassCastException_handle, | |
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271 vmSymbols::java_lang_ClassCastException()); |
| 0 | 272 } |
| 273 return _ClassCastException_instance; | |
| 274 } | |
| 275 | |
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276 ciInstance* ciEnv::the_null_string() { |
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277 if (_the_null_string == NULL) { |
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278 VM_ENTRY_MARK; |
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279 _the_null_string = get_object(Universe::the_null_string())->as_instance(); |
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280 } |
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281 return _the_null_string; |
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282 } |
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283 |
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284 ciInstance* ciEnv::the_min_jint_string() { |
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285 if (_the_min_jint_string == NULL) { |
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286 VM_ENTRY_MARK; |
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287 _the_min_jint_string = get_object(Universe::the_min_jint_string())->as_instance(); |
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288 } |
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289 return _the_min_jint_string; |
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290 } |
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291 |
| 0 | 292 // ------------------------------------------------------------------ |
| 293 // ciEnv::get_method_from_handle | |
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294 ciMethod* ciEnv::get_method_from_handle(Method* method) { |
| 0 | 295 VM_ENTRY_MARK; |
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296 return get_metadata(method)->as_method(); |
| 0 | 297 } |
| 298 | |
| 299 // ------------------------------------------------------------------ | |
| 300 // ciEnv::array_element_offset_in_bytes | |
| 301 int ciEnv::array_element_offset_in_bytes(ciArray* a_h, ciObject* o_h) { | |
| 302 VM_ENTRY_MARK; | |
| 303 objArrayOop a = (objArrayOop)a_h->get_oop(); | |
| 304 assert(a->is_objArray(), ""); | |
| 305 int length = a->length(); | |
| 306 oop o = o_h->get_oop(); | |
| 307 for (int i = 0; i < length; i++) { | |
| 308 if (a->obj_at(i) == o) return i; | |
| 309 } | |
| 310 return -1; | |
| 311 } | |
| 312 | |
| 313 | |
| 314 // ------------------------------------------------------------------ | |
| 315 // ciEnv::check_klass_accessiblity | |
| 316 // | |
| 317 // Note: the logic of this method should mirror the logic of | |
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318 // ConstantPool::verify_constant_pool_resolve. |
| 0 | 319 bool ciEnv::check_klass_accessibility(ciKlass* accessing_klass, |
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320 Klass* resolved_klass) { |
| 0 | 321 if (accessing_klass == NULL || !accessing_klass->is_loaded()) { |
| 322 return true; | |
| 323 } | |
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324 if (accessing_klass->is_obj_array_klass()) { |
| 0 | 325 accessing_klass = accessing_klass->as_obj_array_klass()->base_element_klass(); |
| 326 } | |
| 327 if (!accessing_klass->is_instance_klass()) { | |
| 328 return true; | |
| 329 } | |
| 330 | |
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331 if (resolved_klass->oop_is_objArray()) { |
| 0 | 332 // Find the element klass, if this is an array. |
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333 resolved_klass = ObjArrayKlass::cast(resolved_klass)->bottom_klass(); |
| 0 | 334 } |
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335 if (resolved_klass->oop_is_instance()) { |
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336 return Reflection::verify_class_access(accessing_klass->get_Klass(), |
| 0 | 337 resolved_klass, |
| 338 true); | |
| 339 } | |
| 340 return true; | |
| 341 } | |
| 342 | |
| 343 // ------------------------------------------------------------------ | |
| 344 // ciEnv::get_klass_by_name_impl | |
| 345 ciKlass* ciEnv::get_klass_by_name_impl(ciKlass* accessing_klass, | |
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346 constantPoolHandle cpool, |
| 0 | 347 ciSymbol* name, |
| 348 bool require_local) { | |
| 349 ASSERT_IN_VM; | |
| 350 EXCEPTION_CONTEXT; | |
| 351 | |
| 352 // Now we need to check the SystemDictionary | |
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353 Symbol* sym = name->get_symbol(); |
| 0 | 354 if (sym->byte_at(0) == 'L' && |
| 355 sym->byte_at(sym->utf8_length()-1) == ';') { | |
| 356 // This is a name from a signature. Strip off the trimmings. | |
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357 // Call recursive to keep scope of strippedsym. |
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358 TempNewSymbol strippedsym = SymbolTable::new_symbol(sym->as_utf8()+1, |
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359 sym->utf8_length()-2, |
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360 KILL_COMPILE_ON_FATAL_(_unloaded_ciinstance_klass)); |
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361 ciSymbol* strippedname = get_symbol(strippedsym); |
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362 return get_klass_by_name_impl(accessing_klass, cpool, strippedname, require_local); |
| 0 | 363 } |
| 364 | |
| 365 // Check for prior unloaded klass. The SystemDictionary's answers | |
| 366 // can vary over time but the compiler needs consistency. | |
| 367 ciKlass* unloaded_klass = check_get_unloaded_klass(accessing_klass, name); | |
| 368 if (unloaded_klass != NULL) { | |
| 369 if (require_local) return NULL; | |
| 370 return unloaded_klass; | |
| 371 } | |
| 372 | |
| 373 Handle loader(THREAD, (oop)NULL); | |
| 374 Handle domain(THREAD, (oop)NULL); | |
| 375 if (accessing_klass != NULL) { | |
| 376 loader = Handle(THREAD, accessing_klass->loader()); | |
| 377 domain = Handle(THREAD, accessing_klass->protection_domain()); | |
| 378 } | |
| 379 | |
| 380 // setup up the proper type to return on OOM | |
| 381 ciKlass* fail_type; | |
| 382 if (sym->byte_at(0) == '[') { | |
| 383 fail_type = _unloaded_ciobjarrayklass; | |
| 384 } else { | |
| 385 fail_type = _unloaded_ciinstance_klass; | |
| 386 } | |
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387 KlassHandle found_klass; |
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388 { |
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389 ttyUnlocker ttyul; // release tty lock to avoid ordering problems |
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390 MutexLocker ml(Compile_lock); |
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391 Klass* kls; |
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392 if (!require_local) { |
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393 kls = SystemDictionary::find_constrained_instance_or_array_klass(sym, loader, |
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394 KILL_COMPILE_ON_FATAL_(fail_type)); |
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395 } else { |
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396 kls = SystemDictionary::find_instance_or_array_klass(sym, loader, domain, |
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397 KILL_COMPILE_ON_FATAL_(fail_type)); |
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398 } |
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399 found_klass = KlassHandle(THREAD, kls); |
| 0 | 400 } |
| 401 | |
| 402 // If we fail to find an array klass, look again for its element type. | |
| 403 // The element type may be available either locally or via constraints. | |
| 404 // In either case, if we can find the element type in the system dictionary, | |
| 405 // we must build an array type around it. The CI requires array klasses | |
| 406 // to be loaded if their element klasses are loaded, except when memory | |
| 407 // is exhausted. | |
| 408 if (sym->byte_at(0) == '[' && | |
| 409 (sym->byte_at(1) == '[' || sym->byte_at(1) == 'L')) { | |
| 410 // We have an unloaded array. | |
| 411 // Build it on the fly if the element class exists. | |
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412 TempNewSymbol elem_sym = SymbolTable::new_symbol(sym->as_utf8()+1, |
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413 sym->utf8_length()-1, |
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414 KILL_COMPILE_ON_FATAL_(fail_type)); |
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415 |
| 0 | 416 // Get element ciKlass recursively. |
| 417 ciKlass* elem_klass = | |
| 418 get_klass_by_name_impl(accessing_klass, | |
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419 cpool, |
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420 get_symbol(elem_sym), |
| 0 | 421 require_local); |
| 422 if (elem_klass != NULL && elem_klass->is_loaded()) { | |
| 423 // Now make an array for it | |
| 424 return ciObjArrayKlass::make_impl(elem_klass); | |
| 425 } | |
| 426 } | |
| 427 | |
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428 if (found_klass() == NULL && !cpool.is_null() && cpool->has_preresolution()) { |
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429 // Look inside the constant pool for pre-resolved class entries. |
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430 for (int i = cpool->length() - 1; i >= 1; i--) { |
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431 if (cpool->tag_at(i).is_klass()) { |
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432 Klass* kls = cpool->resolved_klass_at(i); |
| 6983 | 433 if (kls->name() == sym) { |
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434 found_klass = KlassHandle(THREAD, kls); |
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435 break; |
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436 } |
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437 } |
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438 } |
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439 } |
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440 |
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441 if (found_klass() != NULL) { |
| 0 | 442 // Found it. Build a CI handle. |
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443 return get_klass(found_klass()); |
| 0 | 444 } |
| 445 | |
| 446 if (require_local) return NULL; | |
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447 |
| 0 | 448 // Not yet loaded into the VM, or not governed by loader constraints. |
| 449 // Make a CI representative for it. | |
| 450 return get_unloaded_klass(accessing_klass, name); | |
| 451 } | |
| 452 | |
| 453 // ------------------------------------------------------------------ | |
| 454 // ciEnv::get_klass_by_name | |
| 455 ciKlass* ciEnv::get_klass_by_name(ciKlass* accessing_klass, | |
| 456 ciSymbol* klass_name, | |
| 457 bool require_local) { | |
| 458 GUARDED_VM_ENTRY(return get_klass_by_name_impl(accessing_klass, | |
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459 constantPoolHandle(), |
| 0 | 460 klass_name, |
| 461 require_local);) | |
| 462 } | |
| 463 | |
| 464 // ------------------------------------------------------------------ | |
| 465 // ciEnv::get_klass_by_index_impl | |
| 466 // | |
| 467 // Implementation of get_klass_by_index. | |
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468 ciKlass* ciEnv::get_klass_by_index_impl(constantPoolHandle cpool, |
| 0 | 469 int index, |
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470 bool& is_accessible, |
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471 ciInstanceKlass* accessor) { |
| 0 | 472 EXCEPTION_CONTEXT; |
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473 KlassHandle klass; // = NULL; |
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474 Symbol* klass_name = NULL; |
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475 |
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476 if (cpool->tag_at(index).is_symbol()) { |
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477 klass_name = cpool->symbol_at(index); |
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478 } else { |
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479 // Check if it's resolved if it's not a symbol constant pool entry. |
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480 klass = KlassHandle(THREAD, ConstantPool::klass_at_if_loaded(cpool, index)); |
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481 |
| 0 | 482 if (klass.is_null()) { |
| 483 // The klass has not been inserted into the constant pool. | |
| 484 // Try to look it up by name. | |
| 485 { | |
| 486 // We have to lock the cpool to keep the oop from being resolved | |
| 487 // while we are accessing it. | |
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488 MonitorLockerEx ml(cpool->lock()); |
| 0 | 489 constantTag tag = cpool->tag_at(index); |
| 490 if (tag.is_klass()) { | |
| 491 // The klass has been inserted into the constant pool | |
| 492 // very recently. | |
| 493 klass = KlassHandle(THREAD, cpool->resolved_klass_at(index)); | |
| 494 } else { | |
| 495 assert(cpool->tag_at(index).is_unresolved_klass(), "wrong tag"); | |
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496 klass_name = cpool->unresolved_klass_at(index); |
| 0 | 497 } |
| 498 } | |
| 499 } | |
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500 } |
| 0 | 501 |
| 502 if (klass.is_null()) { | |
| 503 // Not found in constant pool. Use the name to do the lookup. | |
| 504 ciKlass* k = get_klass_by_name_impl(accessor, | |
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505 cpool, |
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506 get_symbol(klass_name), |
| 0 | 507 false); |
| 508 // Calculate accessibility the hard way. | |
| 509 if (!k->is_loaded()) { | |
| 510 is_accessible = false; | |
| 511 } else if (k->loader() != accessor->loader() && | |
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512 get_klass_by_name_impl(accessor, cpool, k->name(), true) == NULL) { |
| 0 | 513 // Loaded only remotely. Not linked yet. |
| 514 is_accessible = false; | |
| 515 } else { | |
| 516 // Linked locally, and we must also check public/private, etc. | |
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517 is_accessible = check_klass_accessibility(accessor, k->get_Klass()); |
| 0 | 518 } |
| 519 return k; | |
| 520 } | |
| 521 | |
| 522 // Check for prior unloaded klass. The SystemDictionary's answers | |
| 523 // can vary over time but the compiler needs consistency. | |
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524 ciSymbol* name = get_symbol(klass()->name()); |
| 0 | 525 ciKlass* unloaded_klass = check_get_unloaded_klass(accessor, name); |
| 526 if (unloaded_klass != NULL) { | |
| 527 is_accessible = false; | |
| 528 return unloaded_klass; | |
| 529 } | |
| 530 | |
| 531 // It is known to be accessible, since it was found in the constant pool. | |
| 532 is_accessible = true; | |
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533 return get_klass(klass()); |
| 0 | 534 } |
| 535 | |
| 536 // ------------------------------------------------------------------ | |
| 537 // ciEnv::get_klass_by_index | |
| 538 // | |
| 539 // Get a klass from the constant pool. | |
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540 ciKlass* ciEnv::get_klass_by_index(constantPoolHandle cpool, |
| 0 | 541 int index, |
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542 bool& is_accessible, |
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543 ciInstanceKlass* accessor) { |
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544 GUARDED_VM_ENTRY(return get_klass_by_index_impl(cpool, index, is_accessible, accessor);) |
| 0 | 545 } |
| 546 | |
| 547 // ------------------------------------------------------------------ | |
| 548 // ciEnv::get_constant_by_index_impl | |
| 549 // | |
| 550 // Implementation of get_constant_by_index(). | |
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551 ciConstant ciEnv::get_constant_by_index_impl(constantPoolHandle cpool, |
| 1602 | 552 int pool_index, int cache_index, |
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553 ciInstanceKlass* accessor) { |
| 1602 | 554 bool ignore_will_link; |
| 0 | 555 EXCEPTION_CONTEXT; |
| 1602 | 556 int index = pool_index; |
| 557 if (cache_index >= 0) { | |
| 558 assert(index < 0, "only one kind of index at a time"); | |
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559 oop obj = cpool->resolved_references()->obj_at(cache_index); |
| 1602 | 560 if (obj != NULL) { |
| 561 ciObject* ciobj = get_object(obj); | |
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562 if (ciobj->is_array()) { |
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563 return ciConstant(T_ARRAY, ciobj); |
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564 } else { |
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565 assert(ciobj->is_instance(), "should be an instance"); |
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566 return ciConstant(T_OBJECT, ciobj); |
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567 } |
| 1602 | 568 } |
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569 index = cpool->object_to_cp_index(cache_index); |
| 1602 | 570 } |
| 0 | 571 constantTag tag = cpool->tag_at(index); |
| 572 if (tag.is_int()) { | |
| 573 return ciConstant(T_INT, (jint)cpool->int_at(index)); | |
| 574 } else if (tag.is_long()) { | |
| 575 return ciConstant((jlong)cpool->long_at(index)); | |
| 576 } else if (tag.is_float()) { | |
| 577 return ciConstant((jfloat)cpool->float_at(index)); | |
| 578 } else if (tag.is_double()) { | |
| 579 return ciConstant((jdouble)cpool->double_at(index)); | |
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580 } else if (tag.is_string()) { |
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581 oop string = NULL; |
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582 assert(cache_index >= 0, "should have a cache index"); |
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583 if (cpool->is_pseudo_string_at(index)) { |
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584 string = cpool->pseudo_string_at(index, cache_index); |
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585 } else { |
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586 string = cpool->string_at(index, cache_index, THREAD); |
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587 if (HAS_PENDING_EXCEPTION) { |
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588 CLEAR_PENDING_EXCEPTION; |
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589 record_out_of_memory_failure(); |
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590 return ciConstant(); |
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591 } |
| 0 | 592 } |
| 593 ciObject* constant = get_object(string); | |
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594 if (constant->is_array()) { |
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595 return ciConstant(T_ARRAY, constant); |
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596 } else { |
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597 assert (constant->is_instance(), "must be an instance, or not? "); |
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598 return ciConstant(T_OBJECT, constant); |
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599 } |
| 0 | 600 } else if (tag.is_klass() || tag.is_unresolved_klass()) { |
| 601 // 4881222: allow ldc to take a class type | |
| 1602 | 602 ciKlass* klass = get_klass_by_index_impl(cpool, index, ignore_will_link, accessor); |
| 0 | 603 if (HAS_PENDING_EXCEPTION) { |
| 604 CLEAR_PENDING_EXCEPTION; | |
| 605 record_out_of_memory_failure(); | |
| 606 return ciConstant(); | |
| 607 } | |
| 608 assert (klass->is_instance_klass() || klass->is_array_klass(), | |
| 609 "must be an instance or array klass "); | |
| 1602 | 610 return ciConstant(T_OBJECT, klass->java_mirror()); |
| 611 } else if (tag.is_method_type()) { | |
| 612 // must execute Java code to link this CP entry into cache[i].f1 | |
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613 ciSymbol* signature = get_symbol(cpool->method_type_signature_at(index)); |
| 1602 | 614 ciObject* ciobj = get_unloaded_method_type_constant(signature); |
| 615 return ciConstant(T_OBJECT, ciobj); | |
| 616 } else if (tag.is_method_handle()) { | |
| 617 // must execute Java code to link this CP entry into cache[i].f1 | |
| 618 int ref_kind = cpool->method_handle_ref_kind_at(index); | |
| 619 int callee_index = cpool->method_handle_klass_index_at(index); | |
| 620 ciKlass* callee = get_klass_by_index_impl(cpool, callee_index, ignore_will_link, accessor); | |
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621 ciSymbol* name = get_symbol(cpool->method_handle_name_ref_at(index)); |
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622 ciSymbol* signature = get_symbol(cpool->method_handle_signature_ref_at(index)); |
| 1602 | 623 ciObject* ciobj = get_unloaded_method_handle_constant(callee, name, signature, ref_kind); |
| 624 return ciConstant(T_OBJECT, ciobj); | |
| 0 | 625 } else { |
| 626 ShouldNotReachHere(); | |
| 627 return ciConstant(); | |
| 628 } | |
| 629 } | |
| 630 | |
| 631 // ------------------------------------------------------------------ | |
| 632 // ciEnv::get_constant_by_index | |
| 633 // | |
| 634 // Pull a constant out of the constant pool. How appropriate. | |
| 635 // | |
| 636 // Implementation note: this query is currently in no way cached. | |
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637 ciConstant ciEnv::get_constant_by_index(constantPoolHandle cpool, |
| 1602 | 638 int pool_index, int cache_index, |
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639 ciInstanceKlass* accessor) { |
| 1602 | 640 GUARDED_VM_ENTRY(return get_constant_by_index_impl(cpool, pool_index, cache_index, accessor);) |
| 0 | 641 } |
| 642 | |
| 643 // ------------------------------------------------------------------ | |
| 644 // ciEnv::get_field_by_index_impl | |
| 645 // | |
| 646 // Implementation of get_field_by_index. | |
| 647 // | |
| 648 // Implementation note: the results of field lookups are cached | |
| 649 // in the accessor klass. | |
| 650 ciField* ciEnv::get_field_by_index_impl(ciInstanceKlass* accessor, | |
| 651 int index) { | |
| 652 ciConstantPoolCache* cache = accessor->field_cache(); | |
| 653 if (cache == NULL) { | |
| 654 ciField* field = new (arena()) ciField(accessor, index); | |
| 655 return field; | |
| 656 } else { | |
| 657 ciField* field = (ciField*)cache->get(index); | |
| 658 if (field == NULL) { | |
| 659 field = new (arena()) ciField(accessor, index); | |
| 660 cache->insert(index, field); | |
| 661 } | |
| 662 return field; | |
| 663 } | |
| 664 } | |
| 665 | |
| 666 // ------------------------------------------------------------------ | |
| 667 // ciEnv::get_field_by_index | |
| 668 // | |
| 669 // Get a field by index from a klass's constant pool. | |
| 670 ciField* ciEnv::get_field_by_index(ciInstanceKlass* accessor, | |
| 671 int index) { | |
| 672 GUARDED_VM_ENTRY(return get_field_by_index_impl(accessor, index);) | |
| 673 } | |
| 674 | |
| 675 // ------------------------------------------------------------------ | |
| 676 // ciEnv::lookup_method | |
| 677 // | |
| 678 // Perform an appropriate method lookup based on accessor, holder, | |
| 679 // name, signature, and bytecode. | |
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680 Method* ciEnv::lookup_method(InstanceKlass* accessor, |
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681 InstanceKlass* holder, |
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682 Symbol* name, |
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683 Symbol* sig, |
| 0 | 684 Bytecodes::Code bc) { |
| 685 EXCEPTION_CONTEXT; | |
| 686 KlassHandle h_accessor(THREAD, accessor); | |
| 687 KlassHandle h_holder(THREAD, holder); | |
| 688 LinkResolver::check_klass_accessability(h_accessor, h_holder, KILL_COMPILE_ON_FATAL_(NULL)); | |
| 689 methodHandle dest_method; | |
| 690 switch (bc) { | |
| 691 case Bytecodes::_invokestatic: | |
| 692 dest_method = | |
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693 LinkResolver::resolve_static_call_or_null(h_holder, name, sig, h_accessor); |
| 0 | 694 break; |
| 695 case Bytecodes::_invokespecial: | |
| 696 dest_method = | |
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697 LinkResolver::resolve_special_call_or_null(h_holder, name, sig, h_accessor); |
| 0 | 698 break; |
| 699 case Bytecodes::_invokeinterface: | |
| 700 dest_method = | |
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701 LinkResolver::linktime_resolve_interface_method_or_null(h_holder, name, sig, |
| 0 | 702 h_accessor, true); |
| 703 break; | |
| 704 case Bytecodes::_invokevirtual: | |
| 705 dest_method = | |
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706 LinkResolver::linktime_resolve_virtual_method_or_null(h_holder, name, sig, |
| 0 | 707 h_accessor, true); |
| 708 break; | |
| 709 default: ShouldNotReachHere(); | |
| 710 } | |
| 711 | |
| 712 return dest_method(); | |
| 713 } | |
| 714 | |
| 715 | |
| 716 // ------------------------------------------------------------------ | |
| 717 // ciEnv::get_method_by_index_impl | |
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718 ciMethod* ciEnv::get_method_by_index_impl(constantPoolHandle cpool, |
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719 int index, Bytecodes::Code bc, |
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720 ciInstanceKlass* accessor) { |
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721 if (bc == Bytecodes::_invokedynamic) { |
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722 ConstantPoolCacheEntry* cpce = cpool->invokedynamic_cp_cache_entry_at(index); |
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723 bool is_resolved = !cpce->is_f1_null(); |
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724 // FIXME: code generation could allow for null (unlinked) call site |
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725 // The call site could be made patchable as follows: |
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726 // Load the appendix argument from the constant pool. |
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727 // Test the appendix argument and jump to a known deopt routine if it is null. |
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728 // Jump through a patchable call site, which is initially a deopt routine. |
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729 // Patch the call site to the nmethod entry point of the static compiled lambda form. |
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730 // As with other two-component call sites, both values must be independently verified. |
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731 |
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732 if (is_resolved) { |
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733 // Get the invoker Method* from the constant pool. |
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734 // (The appendix argument, if any, will be noted in the method's signature.) |
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735 Method* adapter = cpce->f1_as_method(); |
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736 return get_method(adapter); |
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737 } |
| 0 | 738 |
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739 // Fake a method that is equivalent to a declared method. |
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740 ciInstanceKlass* holder = get_instance_klass(SystemDictionary::MethodHandle_klass()); |
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741 ciSymbol* name = ciSymbol::invokeBasic_name(); |
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742 ciSymbol* signature = get_symbol(cpool->signature_ref_at(index)); |
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743 return get_unloaded_method(holder, name, signature, accessor); |
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744 } else { |
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745 const int holder_index = cpool->klass_ref_index_at(index); |
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746 bool holder_is_accessible; |
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747 ciKlass* holder = get_klass_by_index_impl(cpool, holder_index, holder_is_accessible, accessor); |
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748 ciInstanceKlass* declared_holder = get_instance_klass_for_declared_method_holder(holder); |
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749 |
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750 // Get the method's name and signature. |
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751 Symbol* name_sym = cpool->name_ref_at(index); |
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752 Symbol* sig_sym = cpool->signature_ref_at(index); |
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753 |
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754 if (cpool->has_preresolution() |
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755 || (holder == ciEnv::MethodHandle_klass() && |
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756 MethodHandles::is_signature_polymorphic_name(holder->get_Klass(), name_sym))) { |
|
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757 // Short-circuit lookups for JSR 292-related call sites. |
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758 // That is, do not rely only on name-based lookups, because they may fail |
|
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759 // if the names are not resolvable in the boot class loader (7056328). |
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760 switch (bc) { |
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761 case Bytecodes::_invokevirtual: |
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762 case Bytecodes::_invokeinterface: |
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763 case Bytecodes::_invokespecial: |
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764 case Bytecodes::_invokestatic: |
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765 { |
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766 Method* m = ConstantPool::method_at_if_loaded(cpool, index); |
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767 if (m != NULL) { |
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768 return get_method(m); |
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769 } |
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770 } |
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771 break; |
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772 } |
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773 } |
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774 |
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775 if (holder_is_accessible) { // Our declared holder is loaded. |
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776 InstanceKlass* lookup = declared_holder->get_instanceKlass(); |
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777 Method* m = lookup_method(accessor->get_instanceKlass(), lookup, name_sym, sig_sym, bc); |
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778 if (m != NULL && |
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779 (bc == Bytecodes::_invokestatic |
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780 ? m->method_holder()->is_not_initialized() |
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781 : !m->method_holder()->is_loaded())) { |
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782 m = NULL; |
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783 } |
|
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784 #ifdef ASSERT |
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785 if (m != NULL && ReplayCompiles && !ciReplay::is_loaded(m)) { |
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786 m = NULL; |
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787 } |
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788 #endif |
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789 if (m != NULL) { |
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790 // We found the method. |
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791 return get_method(m); |
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792 } |
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793 } |
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794 |
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795 // Either the declared holder was not loaded, or the method could |
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796 // not be found. Create a dummy ciMethod to represent the failed |
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797 // lookup. |
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798 ciSymbol* name = get_symbol(name_sym); |
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799 ciSymbol* signature = get_symbol(sig_sym); |
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800 return get_unloaded_method(declared_holder, name, signature, accessor); |
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801 } |
|
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802 } |
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803 |
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804 |
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805 // ------------------------------------------------------------------ |
| 0 | 806 // ciEnv::get_instance_klass_for_declared_method_holder |
| 807 ciInstanceKlass* ciEnv::get_instance_klass_for_declared_method_holder(ciKlass* method_holder) { | |
| 808 // For the case of <array>.clone(), the method holder can be a ciArrayKlass | |
| 809 // instead of a ciInstanceKlass. For that case simply pretend that the | |
| 810 // declared holder is Object.clone since that's where the call will bottom out. | |
| 811 // A more correct fix would trickle out through many interfaces in CI, | |
| 812 // requiring ciInstanceKlass* to become ciKlass* and many more places would | |
| 813 // require checks to make sure the expected type was found. Given that this | |
| 814 // only occurs for clone() the more extensive fix seems like overkill so | |
| 815 // instead we simply smear the array type into Object. | |
|
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816 guarantee(method_holder != NULL, "no method holder"); |
| 0 | 817 if (method_holder->is_instance_klass()) { |
| 818 return method_holder->as_instance_klass(); | |
| 819 } else if (method_holder->is_array_klass()) { | |
| 820 return current()->Object_klass(); | |
| 821 } else { | |
| 822 ShouldNotReachHere(); | |
| 823 } | |
| 824 return NULL; | |
| 825 } | |
| 826 | |
| 827 | |
| 828 // ------------------------------------------------------------------ | |
| 829 // ciEnv::get_method_by_index | |
|
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830 ciMethod* ciEnv::get_method_by_index(constantPoolHandle cpool, |
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831 int index, Bytecodes::Code bc, |
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832 ciInstanceKlass* accessor) { |
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833 GUARDED_VM_ENTRY(return get_method_by_index_impl(cpool, index, bc, accessor);) |
| 0 | 834 } |
| 835 | |
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836 |
| 0 | 837 // ------------------------------------------------------------------ |
| 838 // ciEnv::name_buffer | |
| 839 char *ciEnv::name_buffer(int req_len) { | |
| 840 if (_name_buffer_len < req_len) { | |
| 841 if (_name_buffer == NULL) { | |
| 842 _name_buffer = (char*)arena()->Amalloc(sizeof(char)*req_len); | |
| 843 _name_buffer_len = req_len; | |
| 844 } else { | |
| 845 _name_buffer = | |
| 846 (char*)arena()->Arealloc(_name_buffer, _name_buffer_len, req_len); | |
| 847 _name_buffer_len = req_len; | |
| 848 } | |
| 849 } | |
| 850 return _name_buffer; | |
| 851 } | |
| 852 | |
| 853 // ------------------------------------------------------------------ | |
| 854 // ciEnv::is_in_vm | |
| 855 bool ciEnv::is_in_vm() { | |
| 856 return JavaThread::current()->thread_state() == _thread_in_vm; | |
| 857 } | |
| 858 | |
| 859 bool ciEnv::system_dictionary_modification_counter_changed() { | |
| 860 return _system_dictionary_modification_counter != SystemDictionary::number_of_modifications(); | |
| 861 } | |
| 862 | |
| 863 // ------------------------------------------------------------------ | |
|
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864 // ciEnv::validate_compile_task_dependencies |
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865 // |
|
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866 // Check for changes during compilation (e.g. class loads, evolution, |
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867 // breakpoints, call site invalidation). |
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868 void ciEnv::validate_compile_task_dependencies(ciMethod* target) { |
| 0 | 869 if (failing()) return; // no need for further checks |
| 870 | |
|
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871 // First, check non-klass dependencies as we might return early and |
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872 // not check klass dependencies if the system dictionary |
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873 // modification counter hasn't changed (see below). |
|
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874 for (Dependencies::DepStream deps(dependencies()); deps.next(); ) { |
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875 if (deps.is_klass_type()) continue; // skip klass dependencies |
|
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876 Klass* witness = deps.check_dependency(); |
|
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877 if (witness != NULL) { |
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878 record_failure("invalid non-klass dependency"); |
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879 return; |
|
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880 } |
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881 } |
| 0 | 882 |
|
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883 // Klass dependencies must be checked when the system dictionary |
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884 // changes. If logging is enabled all violated dependences will be |
|
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885 // recorded in the log. In debug mode check dependencies even if |
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886 // the system dictionary hasn't changed to verify that no invalid |
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887 // dependencies were inserted. Any violated dependences in this |
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888 // case are dumped to the tty. |
| 0 | 889 bool counter_changed = system_dictionary_modification_counter_changed(); |
| 890 | |
| 3959 | 891 bool verify_deps = trueInDebug; |
| 892 if (!counter_changed && !verify_deps) return; | |
| 893 | |
|
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894 int klass_violations = 0; |
| 0 | 895 for (Dependencies::DepStream deps(dependencies()); deps.next(); ) { |
|
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896 if (!deps.is_klass_type()) continue; // skip non-klass dependencies |
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897 Klass* witness = deps.check_dependency(); |
| 0 | 898 if (witness != NULL) { |
|
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899 klass_violations++; |
| 3959 | 900 if (!counter_changed) { |
| 901 // Dependence failed but counter didn't change. Log a message | |
| 902 // describing what failed and allow the assert at the end to | |
| 903 // trigger. | |
| 904 deps.print_dependency(witness); | |
| 905 } else if (xtty == NULL) { | |
| 906 // If we're not logging then a single violation is sufficient, | |
| 907 // otherwise we want to log all the dependences which were | |
| 908 // violated. | |
| 909 break; | |
| 910 } | |
| 0 | 911 } |
| 912 } | |
| 913 | |
|
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914 if (klass_violations != 0) { |
| 3959 | 915 #ifdef ASSERT |
| 916 if (!counter_changed && !PrintCompilation) { | |
| 917 // Print out the compile task that failed | |
| 918 _task->print_line(); | |
| 919 } | |
| 920 #endif | |
| 0 | 921 assert(counter_changed, "failed dependencies, but counter didn't change"); |
| 922 record_failure("concurrent class loading"); | |
| 923 } | |
| 924 } | |
| 925 | |
| 926 // ------------------------------------------------------------------ | |
| 927 // ciEnv::register_method | |
| 928 void ciEnv::register_method(ciMethod* target, | |
| 929 int entry_bci, | |
| 930 CodeOffsets* offsets, | |
| 931 int orig_pc_offset, | |
| 932 CodeBuffer* code_buffer, | |
| 933 int frame_words, | |
| 934 OopMapSet* oop_map_set, | |
| 935 ExceptionHandlerTable* handler_table, | |
| 936 ImplicitExceptionTable* inc_table, | |
| 937 AbstractCompiler* compiler, | |
| 938 int comp_level, | |
|
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939 bool has_unsafe_access, |
| 17780 | 940 bool has_wide_vectors, |
| 941 RTMState rtm_state) { | |
| 0 | 942 VM_ENTRY_MARK; |
| 943 nmethod* nm = NULL; | |
| 944 { | |
| 945 // To prevent compile queue updates. | |
| 946 MutexLocker locker(MethodCompileQueue_lock, THREAD); | |
| 947 | |
| 948 // Prevent SystemDictionary::add_to_hierarchy from running | |
| 949 // and invalidating our dependencies until we install this method. | |
|
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950 // No safepoints are allowed. Otherwise, class redefinition can occur in between. |
| 0 | 951 MutexLocker ml(Compile_lock); |
|
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952 No_Safepoint_Verifier nsv; |
| 0 | 953 |
|
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954 // Change in Jvmti state may invalidate compilation. |
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955 if (!failing() && |
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956 ( (!jvmti_can_hotswap_or_post_breakpoint() && |
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957 JvmtiExport::can_hotswap_or_post_breakpoint()) || |
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958 (!jvmti_can_access_local_variables() && |
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959 JvmtiExport::can_access_local_variables()) || |
|
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960 (!jvmti_can_post_on_exceptions() && |
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961 JvmtiExport::can_post_on_exceptions()) )) { |
|
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962 record_failure("Jvmti state change invalidated dependencies"); |
| 0 | 963 } |
| 964 | |
|
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965 // Change in DTrace flags may invalidate compilation. |
|
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966 if (!failing() && |
|
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967 ( (!dtrace_extended_probes() && ExtendedDTraceProbes) || |
|
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968 (!dtrace_method_probes() && DTraceMethodProbes) || |
|
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969 (!dtrace_alloc_probes() && DTraceAllocProbes) )) { |
|
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970 record_failure("DTrace flags change invalidated dependencies"); |
|
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971 } |
| 0 | 972 |
|
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973 if (!failing()) { |
|
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974 if (log() != NULL) { |
|
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975 // Log the dependencies which this compilation declares. |
|
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976 dependencies()->log_all_dependencies(); |
|
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977 } |
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978 |
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979 // Encode the dependencies now, so we can check them right away. |
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980 dependencies()->encode_content_bytes(); |
|
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981 |
|
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982 // Check for {class loads, evolution, breakpoints, ...} during compilation |
|
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983 validate_compile_task_dependencies(target); |
|
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984 } |
| 0 | 985 |
|
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986 methodHandle method(THREAD, target->get_Method()); |
| 0 | 987 |
| 17780 | 988 #if INCLUDE_RTM_OPT |
| 989 if (!failing() && (rtm_state != NoRTM) && | |
| 990 (method()->method_data() != NULL) && | |
| 991 (method()->method_data()->rtm_state() != rtm_state)) { | |
| 992 // Preemptive decompile if rtm state was changed. | |
| 993 record_failure("RTM state change invalidated rtm code"); | |
| 994 } | |
| 995 #endif | |
| 996 | |
| 0 | 997 if (failing()) { |
| 998 // While not a true deoptimization, it is a preemptive decompile. | |
|
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999 MethodData* mdo = method()->method_data(); |
| 0 | 1000 if (mdo != NULL) { |
| 1001 mdo->inc_decompile_count(); | |
| 1002 } | |
| 1003 | |
| 1004 // All buffers in the CodeBuffer are allocated in the CodeCache. | |
| 1005 // If the code buffer is created on each compile attempt | |
| 1006 // as in C2, then it must be freed. | |
| 1007 code_buffer->free_blob(); | |
| 1008 return; | |
| 1009 } | |
| 1010 | |
| 1011 assert(offsets->value(CodeOffsets::Deopt) != -1, "must have deopt entry"); | |
| 1012 assert(offsets->value(CodeOffsets::Exceptions) != -1, "must have exception entry"); | |
| 1013 | |
| 1014 nm = nmethod::new_nmethod(method, | |
| 1015 compile_id(), | |
| 1016 entry_bci, | |
| 1017 offsets, | |
| 1018 orig_pc_offset, | |
| 1019 debug_info(), dependencies(), code_buffer, | |
| 1020 frame_words, oop_map_set, | |
| 1021 handler_table, inc_table, | |
| 1022 compiler, comp_level); | |
| 1023 // Free codeBlobs | |
| 1024 code_buffer->free_blob(); | |
| 1025 | |
|
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1026 if (nm != NULL) { |
| 0 | 1027 nm->set_has_unsafe_access(has_unsafe_access); |
|
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1028 nm->set_has_wide_vectors(has_wide_vectors); |
|
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1029 #if INCLUDE_RTM_OPT |
|
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1030 nm->set_rtm_state(rtm_state); |
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1031 #endif |
| 0 | 1032 |
| 1033 // Record successful registration. | |
| 1034 // (Put nm into the task handle *before* publishing to the Java heap.) | |
|
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1035 if (task() != NULL) { |
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1036 task()->set_code(nm); |
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1037 } |
| 0 | 1038 |
| 1039 if (entry_bci == InvocationEntryBci) { | |
| 1783 | 1040 if (TieredCompilation) { |
| 1041 // If there is an old version we're done with it | |
| 1042 nmethod* old = method->code(); | |
| 1043 if (TraceMethodReplacement && old != NULL) { | |
| 1044 ResourceMark rm; | |
| 1045 char *method_name = method->name_and_sig_as_C_string(); | |
| 1046 tty->print_cr("Replacing method %s", method_name); | |
| 1047 } | |
|
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1048 if (old != NULL) { |
| 1783 | 1049 old->make_not_entrant(); |
| 1050 } | |
| 0 | 1051 } |
|
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1052 if (TraceNMethodInstalls) { |
| 0 | 1053 ResourceMark rm; |
| 1054 char *method_name = method->name_and_sig_as_C_string(); | |
| 1055 ttyLocker ttyl; | |
| 1056 tty->print_cr("Installing method (%d) %s ", | |
| 1057 comp_level, | |
| 1058 method_name); | |
| 1059 } | |
| 1060 // Allow the code to be executed | |
| 1061 method->set_code(method, nm); | |
| 1062 } else { | |
|
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1063 if (TraceNMethodInstalls) { |
| 0 | 1064 ResourceMark rm; |
| 1065 char *method_name = method->name_and_sig_as_C_string(); | |
| 1066 ttyLocker ttyl; | |
| 1067 tty->print_cr("Installing osr method (%d) %s @ %d", | |
| 1068 comp_level, | |
| 1069 method_name, | |
| 1070 entry_bci); | |
| 1071 } | |
|
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1072 method->method_holder()->add_osr_nmethod(nm); |
| 0 | 1073 } |
| 1074 } | |
|
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1075 } // safepoints are allowed again |
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1076 |
| 0 | 1077 if (nm != NULL) { |
|
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1078 // JVMTI -- compiled method notification (must be done outside lock) |
| 0 | 1079 nm->post_compiled_method_load_event(); |
|
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1080 } else { |
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1081 // The CodeCache is full. Print out warning and disable compilation. |
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1082 record_failure("code cache is full"); |
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1083 CompileBroker::handle_full_code_cache(); |
| 0 | 1084 } |
| 1085 } | |
| 1086 | |
| 1087 | |
| 1088 // ------------------------------------------------------------------ | |
| 1089 // ciEnv::find_system_klass | |
| 1090 ciKlass* ciEnv::find_system_klass(ciSymbol* klass_name) { | |
| 1091 VM_ENTRY_MARK; | |
|
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1092 return get_klass_by_name_impl(NULL, constantPoolHandle(), klass_name, false); |
| 0 | 1093 } |
| 1094 | |
| 1095 // ------------------------------------------------------------------ | |
| 1096 // ciEnv::comp_level | |
| 1097 int ciEnv::comp_level() { | |
| 1783 | 1098 if (task() == NULL) return CompLevel_highest_tier; |
| 0 | 1099 return task()->comp_level(); |
| 1100 } | |
| 1101 | |
| 1102 // ------------------------------------------------------------------ | |
| 1103 // ciEnv::compile_id | |
| 1104 uint ciEnv::compile_id() { | |
| 1105 if (task() == NULL) return 0; | |
| 1106 return task()->compile_id(); | |
| 1107 } | |
| 1108 | |
| 1109 // ------------------------------------------------------------------ | |
| 1110 // ciEnv::notice_inlined_method() | |
| 1111 void ciEnv::notice_inlined_method(ciMethod* method) { | |
|
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1112 _num_inlined_bytecodes += method->code_size_for_inlining(); |
| 0 | 1113 } |
| 1114 | |
| 1115 // ------------------------------------------------------------------ | |
| 1116 // ciEnv::num_inlined_bytecodes() | |
| 1117 int ciEnv::num_inlined_bytecodes() const { | |
| 1118 return _num_inlined_bytecodes; | |
| 1119 } | |
| 1120 | |
| 1121 // ------------------------------------------------------------------ | |
| 1122 // ciEnv::record_failure() | |
| 1123 void ciEnv::record_failure(const char* reason) { | |
| 1124 if (_failure_reason == NULL) { | |
| 1125 // Record the first failure reason. | |
| 1126 _failure_reason = reason; | |
| 1127 } | |
| 1128 } | |
| 1129 | |
| 1130 // ------------------------------------------------------------------ | |
| 1131 // ciEnv::record_method_not_compilable() | |
| 1132 void ciEnv::record_method_not_compilable(const char* reason, bool all_tiers) { | |
| 1133 int new_compilable = | |
| 1134 all_tiers ? MethodCompilable_never : MethodCompilable_not_at_tier ; | |
| 1135 | |
| 1136 // Only note transitions to a worse state | |
| 1137 if (new_compilable > _compilable) { | |
| 1138 if (log() != NULL) { | |
| 1139 if (all_tiers) { | |
| 1140 log()->elem("method_not_compilable"); | |
| 1141 } else { | |
| 6843 | 1142 log()->elem("method_not_compilable_at_tier level='%d'", |
| 1143 current()->task()->comp_level()); | |
| 0 | 1144 } |
| 1145 } | |
| 1146 _compilable = new_compilable; | |
| 1147 | |
| 1148 // Reset failure reason; this one is more important. | |
| 1149 _failure_reason = NULL; | |
| 1150 record_failure(reason); | |
| 1151 } | |
| 1152 } | |
| 1153 | |
| 1154 // ------------------------------------------------------------------ | |
| 1155 // ciEnv::record_out_of_memory_failure() | |
| 1156 void ciEnv::record_out_of_memory_failure() { | |
| 1157 // If memory is low, we stop compiling methods. | |
| 1158 record_method_not_compilable("out of memory"); | |
| 1159 } | |
|
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1160 |
|
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1161 ciInstance* ciEnv::unloaded_ciinstance() { |
|
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1162 GUARDED_VM_ENTRY(return _factory->get_unloaded_object_constant();) |
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1163 } |
|
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1164 |
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1165 // ------------------------------------------------------------------ |
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1166 // ciEnv::dump_replay_data* |
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1167 |
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1168 // Don't change thread state and acquire any locks. |
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1169 // Safe to call from VM error reporter. |
| 14232 | 1170 |
| 1171 void ciEnv::dump_compile_data(outputStream* out) { | |
| 1172 CompileTask* task = this->task(); | |
| 1173 Method* method = task->method(); | |
| 1174 int entry_bci = task->osr_bci(); | |
| 1175 int comp_level = task->comp_level(); | |
| 1176 out->print("compile %s %s %s %d %d", | |
| 1177 method->klass_name()->as_quoted_ascii(), | |
| 1178 method->name()->as_quoted_ascii(), | |
| 1179 method->signature()->as_quoted_ascii(), | |
| 1180 entry_bci, comp_level); | |
| 1181 if (compiler_data() != NULL) { | |
| 1182 if (is_c2_compile(comp_level)) { // C2 or Shark | |
| 1183 #ifdef COMPILER2 | |
| 1184 // Dump C2 inlining data. | |
| 1185 ((Compile*)compiler_data())->dump_inline_data(out); | |
| 1186 #endif | |
| 1187 } else if (is_c1_compile(comp_level)) { // C1 | |
| 1188 #ifdef COMPILER1 | |
| 1189 // Dump C1 inlining data. | |
| 1190 ((Compilation*)compiler_data())->dump_inline_data(out); | |
| 1191 #endif | |
| 1192 } | |
| 1193 } | |
| 1194 out->cr(); | |
| 1195 } | |
| 1196 | |
|
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1197 void ciEnv::dump_replay_data_unsafe(outputStream* out) { |
|
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1198 ResourceMark rm; |
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1199 #if INCLUDE_JVMTI |
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1200 out->print_cr("JvmtiExport can_access_local_variables %d", _jvmti_can_access_local_variables); |
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1201 out->print_cr("JvmtiExport can_hotswap_or_post_breakpoint %d", _jvmti_can_hotswap_or_post_breakpoint); |
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1202 out->print_cr("JvmtiExport can_post_on_exceptions %d", _jvmti_can_post_on_exceptions); |
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1203 #endif // INCLUDE_JVMTI |
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1204 |
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1205 GrowableArray<ciMetadata*>* objects = _factory->get_ci_metadata(); |
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1206 out->print_cr("# %d ciObject found", objects->length()); |
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1207 for (int i = 0; i < objects->length(); i++) { |
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1208 objects->at(i)->dump_replay_data(out); |
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1209 } |
| 14232 | 1210 dump_compile_data(out); |
|
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1211 out->flush(); |
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1212 } |
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1213 |
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1214 void ciEnv::dump_replay_data(outputStream* out) { |
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1215 GUARDED_VM_ENTRY( |
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1216 MutexLocker ml(Compile_lock); |
|
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1217 dump_replay_data_unsafe(out); |
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1218 ) |
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1219 } |
| 14232 | 1220 |
| 1221 void ciEnv::dump_replay_data(int compile_id) { | |
| 1222 static char buffer[O_BUFLEN]; | |
| 1223 int ret = jio_snprintf(buffer, O_BUFLEN, "replay_pid%p_compid%d.log", os::current_process_id(), compile_id); | |
| 1224 if (ret > 0) { | |
| 1225 int fd = open(buffer, O_RDWR | O_CREAT | O_TRUNC, 0666); | |
| 1226 if (fd != -1) { | |
| 1227 FILE* replay_data_file = os::open(fd, "w"); | |
| 1228 if (replay_data_file != NULL) { | |
| 1229 fileStream replay_data_stream(replay_data_file, /*need_close=*/true); | |
| 1230 dump_replay_data(&replay_data_stream); | |
|
17937
78bbf4d43a14
8037816: Fix for 8036122 breaks build with Xcode5/clang
drchase
parents:
17782
diff
changeset
|
1231 tty->print_cr("# Compiler replay data is saved as: %s", buffer); |
| 14232 | 1232 } else { |
| 1233 tty->print_cr("# Can't open file to dump replay data."); | |
| 1234 } | |
| 1235 } | |
| 1236 } | |
| 1237 } | |
| 1238 | |
| 1239 void ciEnv::dump_inline_data(int compile_id) { | |
| 1240 static char buffer[O_BUFLEN]; | |
| 1241 int ret = jio_snprintf(buffer, O_BUFLEN, "inline_pid%p_compid%d.log", os::current_process_id(), compile_id); | |
| 1242 if (ret > 0) { | |
| 1243 int fd = open(buffer, O_RDWR | O_CREAT | O_TRUNC, 0666); | |
| 1244 if (fd != -1) { | |
| 1245 FILE* inline_data_file = os::open(fd, "w"); | |
| 1246 if (inline_data_file != NULL) { | |
| 1247 fileStream replay_data_stream(inline_data_file, /*need_close=*/true); | |
| 1248 GUARDED_VM_ENTRY( | |
| 1249 MutexLocker ml(Compile_lock); | |
| 1250 dump_compile_data(&replay_data_stream); | |
| 1251 ) | |
| 1252 replay_data_stream.flush(); | |
| 1253 tty->print("# Compiler inline data is saved as: "); | |
|
17937
78bbf4d43a14
8037816: Fix for 8036122 breaks build with Xcode5/clang
drchase
parents:
17782
diff
changeset
|
1254 tty->print_cr("%s", buffer); |
| 14232 | 1255 } else { |
| 1256 tty->print_cr("# Can't open file to dump inline data."); | |
| 1257 } | |
| 1258 } | |
| 1259 } | |
| 1260 } |