Mercurial > hg > truffle
annotate src/share/vm/ci/ciEnv.cpp @ 14518:d8041d695d19
Merged with jdk9/dev/hotspot changeset 3812c088b945
| author | twisti |
|---|---|
| date | Tue, 11 Mar 2014 18:45:59 -0700 |
| parents | 02f27ecb4f3a 96d2c94bbdd0 |
| children | 4ca6dc0799b6 |
| 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; |
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139 |
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140 _jvmti_can_hotswap_or_post_breakpoint = false; |
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141 _jvmti_can_access_local_variables = false; |
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142 _jvmti_can_post_on_exceptions = false; |
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143 _jvmti_can_pop_frame = false; |
| 0 | 144 } |
| 145 | |
| 146 ciEnv::ciEnv(Arena* arena) { | |
| 147 ASSERT_IN_VM; | |
| 148 | |
| 149 // Set up ciEnv::current immediately, for the sake of ciObjectFactory, etc. | |
| 150 CompilerThread* current_thread = CompilerThread::current(); | |
| 151 assert(current_thread->env() == NULL, "must be"); | |
| 152 current_thread->set_env(this); | |
| 153 assert(ciEnv::current() == this, "sanity"); | |
| 154 | |
| 155 _oop_recorder = NULL; | |
| 156 _debug_info = NULL; | |
| 157 _dependencies = NULL; | |
| 158 _failure_reason = NULL; | |
| 159 _compilable = MethodCompilable_never; | |
| 160 _break_at_compile = false; | |
| 161 _compiler_data = NULL; | |
| 162 #ifndef PRODUCT | |
| 163 assert(firstEnv, "must be first"); | |
| 164 firstEnv = false; | |
| 165 #endif /* !PRODUCT */ | |
| 166 | |
| 167 _system_dictionary_modification_counter = 0; | |
| 168 _num_inlined_bytecodes = 0; | |
| 169 _task = NULL; | |
| 170 _log = NULL; | |
| 171 | |
| 172 // Temporary buffer for creating symbols and such. | |
| 173 _name_buffer = NULL; | |
| 174 _name_buffer_len = 0; | |
| 175 | |
| 176 _arena = arena; | |
| 177 _factory = new (_arena) ciObjectFactory(_arena, 128); | |
| 178 | |
| 179 // Preload commonly referenced system ciObjects. | |
| 180 | |
| 181 // During VM initialization, these instances have not yet been created. | |
| 182 // Assertions ensure that these instances are not accessed before | |
| 183 // their initialization. | |
| 184 | |
| 185 assert(Universe::is_fully_initialized(), "must be"); | |
| 186 | |
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187 _NullPointerException_instance = NULL; |
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188 _ArithmeticException_instance = NULL; |
| 0 | 189 _ArrayIndexOutOfBoundsException_instance = NULL; |
| 190 _ArrayStoreException_instance = NULL; | |
| 191 _ClassCastException_instance = NULL; | |
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192 _the_null_string = NULL; |
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193 _the_min_jint_string = NULL; |
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194 |
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195 _jvmti_can_hotswap_or_post_breakpoint = false; |
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196 _jvmti_can_access_local_variables = false; |
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197 _jvmti_can_post_on_exceptions = false; |
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198 _jvmti_can_pop_frame = false; |
| 0 | 199 } |
| 200 | |
| 201 ciEnv::~ciEnv() { | |
| 202 CompilerThread* current_thread = CompilerThread::current(); | |
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203 _factory->remove_symbols(); |
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204 // Need safepoint to clear the env on the thread. RedefineClasses might |
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205 // be reading it. |
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206 GUARDED_VM_ENTRY(current_thread->set_env(NULL);) |
| 0 | 207 } |
| 208 | |
| 209 // ------------------------------------------------------------------ | |
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210 // Cache Jvmti state |
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211 void ciEnv::cache_jvmti_state() { |
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212 VM_ENTRY_MARK; |
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213 // Get Jvmti capabilities under lock to get consistant values. |
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214 MutexLocker mu(JvmtiThreadState_lock); |
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215 _jvmti_can_hotswap_or_post_breakpoint = JvmtiExport::can_hotswap_or_post_breakpoint(); |
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216 _jvmti_can_access_local_variables = JvmtiExport::can_access_local_variables(); |
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217 _jvmti_can_post_on_exceptions = JvmtiExport::can_post_on_exceptions(); |
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218 _jvmti_can_pop_frame = JvmtiExport::can_pop_frame(); |
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219 } |
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220 |
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221 bool ciEnv::should_retain_local_variables() const { |
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222 return _jvmti_can_access_local_variables || _jvmti_can_pop_frame; |
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223 } |
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224 |
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225 bool ciEnv::jvmti_state_changed() const { |
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226 if (!_jvmti_can_access_local_variables && |
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227 JvmtiExport::can_access_local_variables()) { |
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228 return true; |
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229 } |
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230 if (!_jvmti_can_hotswap_or_post_breakpoint && |
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231 JvmtiExport::can_hotswap_or_post_breakpoint()) { |
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232 return true; |
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233 } |
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234 if (!_jvmti_can_post_on_exceptions && |
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235 JvmtiExport::can_post_on_exceptions()) { |
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236 return true; |
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237 } |
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238 if (!_jvmti_can_pop_frame && |
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239 JvmtiExport::can_pop_frame()) { |
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240 return true; |
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241 } |
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242 return false; |
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243 } |
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244 |
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245 // ------------------------------------------------------------------ |
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246 // Cache DTrace flags |
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247 void ciEnv::cache_dtrace_flags() { |
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248 // Need lock? |
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249 _dtrace_extended_probes = ExtendedDTraceProbes; |
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250 if (_dtrace_extended_probes) { |
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251 _dtrace_monitor_probes = true; |
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252 _dtrace_method_probes = true; |
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253 _dtrace_alloc_probes = true; |
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254 } else { |
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255 _dtrace_monitor_probes = DTraceMonitorProbes; |
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256 _dtrace_method_probes = DTraceMethodProbes; |
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257 _dtrace_alloc_probes = DTraceAllocProbes; |
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258 } |
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259 } |
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260 |
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261 // ------------------------------------------------------------------ |
| 0 | 262 // helper for lazy exception creation |
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263 ciInstance* ciEnv::get_or_create_exception(jobject& handle, Symbol* name) { |
| 0 | 264 VM_ENTRY_MARK; |
| 265 if (handle == NULL) { | |
| 266 // Cf. universe.cpp, creation of Universe::_null_ptr_exception_instance. | |
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267 Klass* k = SystemDictionary::find(name, Handle(), Handle(), THREAD); |
| 0 | 268 jobject objh = NULL; |
| 269 if (!HAS_PENDING_EXCEPTION && k != NULL) { | |
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270 oop obj = InstanceKlass::cast(k)->allocate_instance(THREAD); |
| 0 | 271 if (!HAS_PENDING_EXCEPTION) |
| 272 objh = JNIHandles::make_global(obj); | |
| 273 } | |
| 274 if (HAS_PENDING_EXCEPTION) { | |
| 275 CLEAR_PENDING_EXCEPTION; | |
| 276 } else { | |
| 277 handle = objh; | |
| 278 } | |
| 279 } | |
| 280 oop obj = JNIHandles::resolve(handle); | |
| 281 return obj == NULL? NULL: get_object(obj)->as_instance(); | |
| 282 } | |
| 283 | |
| 284 ciInstance* ciEnv::ArrayIndexOutOfBoundsException_instance() { | |
| 285 if (_ArrayIndexOutOfBoundsException_instance == NULL) { | |
| 286 _ArrayIndexOutOfBoundsException_instance | |
| 287 = get_or_create_exception(_ArrayIndexOutOfBoundsException_handle, | |
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288 vmSymbols::java_lang_ArrayIndexOutOfBoundsException()); |
| 0 | 289 } |
| 290 return _ArrayIndexOutOfBoundsException_instance; | |
| 291 } | |
| 292 ciInstance* ciEnv::ArrayStoreException_instance() { | |
| 293 if (_ArrayStoreException_instance == NULL) { | |
| 294 _ArrayStoreException_instance | |
| 295 = get_or_create_exception(_ArrayStoreException_handle, | |
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296 vmSymbols::java_lang_ArrayStoreException()); |
| 0 | 297 } |
| 298 return _ArrayStoreException_instance; | |
| 299 } | |
| 300 ciInstance* ciEnv::ClassCastException_instance() { | |
| 301 if (_ClassCastException_instance == NULL) { | |
| 302 _ClassCastException_instance | |
| 303 = get_or_create_exception(_ClassCastException_handle, | |
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304 vmSymbols::java_lang_ClassCastException()); |
| 0 | 305 } |
| 306 return _ClassCastException_instance; | |
| 307 } | |
| 308 | |
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309 ciInstance* ciEnv::the_null_string() { |
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310 if (_the_null_string == NULL) { |
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311 VM_ENTRY_MARK; |
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312 _the_null_string = get_object(Universe::the_null_string())->as_instance(); |
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313 } |
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314 return _the_null_string; |
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315 } |
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316 |
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317 ciInstance* ciEnv::the_min_jint_string() { |
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318 if (_the_min_jint_string == NULL) { |
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319 VM_ENTRY_MARK; |
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320 _the_min_jint_string = get_object(Universe::the_min_jint_string())->as_instance(); |
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321 } |
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322 return _the_min_jint_string; |
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323 } |
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324 |
| 0 | 325 // ------------------------------------------------------------------ |
| 326 // ciEnv::get_method_from_handle | |
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327 ciMethod* ciEnv::get_method_from_handle(Method* method) { |
| 0 | 328 VM_ENTRY_MARK; |
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329 return get_metadata(method)->as_method(); |
| 0 | 330 } |
| 331 | |
| 332 // ------------------------------------------------------------------ | |
| 333 // ciEnv::array_element_offset_in_bytes | |
| 334 int ciEnv::array_element_offset_in_bytes(ciArray* a_h, ciObject* o_h) { | |
| 335 VM_ENTRY_MARK; | |
| 336 objArrayOop a = (objArrayOop)a_h->get_oop(); | |
| 337 assert(a->is_objArray(), ""); | |
| 338 int length = a->length(); | |
| 339 oop o = o_h->get_oop(); | |
| 340 for (int i = 0; i < length; i++) { | |
| 341 if (a->obj_at(i) == o) return i; | |
| 342 } | |
| 343 return -1; | |
| 344 } | |
| 345 | |
| 346 | |
| 347 // ------------------------------------------------------------------ | |
| 348 // ciEnv::check_klass_accessiblity | |
| 349 // | |
| 350 // Note: the logic of this method should mirror the logic of | |
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351 // ConstantPool::verify_constant_pool_resolve. |
| 0 | 352 bool ciEnv::check_klass_accessibility(ciKlass* accessing_klass, |
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353 Klass* resolved_klass) { |
| 0 | 354 if (accessing_klass == NULL || !accessing_klass->is_loaded()) { |
| 355 return true; | |
| 356 } | |
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357 if (accessing_klass->is_obj_array_klass()) { |
| 0 | 358 accessing_klass = accessing_klass->as_obj_array_klass()->base_element_klass(); |
| 359 } | |
| 360 if (!accessing_klass->is_instance_klass()) { | |
| 361 return true; | |
| 362 } | |
| 363 | |
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364 if (resolved_klass->oop_is_objArray()) { |
| 0 | 365 // Find the element klass, if this is an array. |
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366 resolved_klass = ObjArrayKlass::cast(resolved_klass)->bottom_klass(); |
| 0 | 367 } |
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368 if (resolved_klass->oop_is_instance()) { |
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369 return Reflection::verify_class_access(accessing_klass->get_Klass(), |
| 0 | 370 resolved_klass, |
| 371 true); | |
| 372 } | |
| 373 return true; | |
| 374 } | |
| 375 | |
| 376 // ------------------------------------------------------------------ | |
| 377 // ciEnv::get_klass_by_name_impl | |
| 378 ciKlass* ciEnv::get_klass_by_name_impl(ciKlass* accessing_klass, | |
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379 constantPoolHandle cpool, |
| 0 | 380 ciSymbol* name, |
| 381 bool require_local) { | |
| 382 ASSERT_IN_VM; | |
| 383 EXCEPTION_CONTEXT; | |
| 384 | |
| 385 // Now we need to check the SystemDictionary | |
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386 Symbol* sym = name->get_symbol(); |
| 0 | 387 if (sym->byte_at(0) == 'L' && |
| 388 sym->byte_at(sym->utf8_length()-1) == ';') { | |
| 389 // This is a name from a signature. Strip off the trimmings. | |
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390 // Call recursive to keep scope of strippedsym. |
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391 TempNewSymbol strippedsym = SymbolTable::new_symbol(sym->as_utf8()+1, |
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392 sym->utf8_length()-2, |
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393 KILL_COMPILE_ON_FATAL_(_unloaded_ciinstance_klass)); |
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394 ciSymbol* strippedname = get_symbol(strippedsym); |
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395 return get_klass_by_name_impl(accessing_klass, cpool, strippedname, require_local); |
| 0 | 396 } |
| 397 | |
| 398 // Check for prior unloaded klass. The SystemDictionary's answers | |
| 399 // can vary over time but the compiler needs consistency. | |
| 400 ciKlass* unloaded_klass = check_get_unloaded_klass(accessing_klass, name); | |
| 401 if (unloaded_klass != NULL) { | |
| 402 if (require_local) return NULL; | |
| 403 return unloaded_klass; | |
| 404 } | |
| 405 | |
| 406 Handle loader(THREAD, (oop)NULL); | |
| 407 Handle domain(THREAD, (oop)NULL); | |
| 408 if (accessing_klass != NULL) { | |
| 409 loader = Handle(THREAD, accessing_klass->loader()); | |
| 410 domain = Handle(THREAD, accessing_klass->protection_domain()); | |
| 411 } | |
| 412 | |
| 413 // setup up the proper type to return on OOM | |
| 414 ciKlass* fail_type; | |
| 415 if (sym->byte_at(0) == '[') { | |
| 416 fail_type = _unloaded_ciobjarrayklass; | |
| 417 } else { | |
| 418 fail_type = _unloaded_ciinstance_klass; | |
| 419 } | |
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420 KlassHandle found_klass; |
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421 { |
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422 ttyUnlocker ttyul; // release tty lock to avoid ordering problems |
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423 MutexLocker ml(Compile_lock); |
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424 Klass* kls; |
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425 if (!require_local) { |
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426 kls = SystemDictionary::find_constrained_instance_or_array_klass(sym, loader, |
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427 KILL_COMPILE_ON_FATAL_(fail_type)); |
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428 } else { |
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429 kls = SystemDictionary::find_instance_or_array_klass(sym, loader, domain, |
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430 KILL_COMPILE_ON_FATAL_(fail_type)); |
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431 } |
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432 found_klass = KlassHandle(THREAD, kls); |
| 0 | 433 } |
| 434 | |
| 435 // If we fail to find an array klass, look again for its element type. | |
| 436 // The element type may be available either locally or via constraints. | |
| 437 // In either case, if we can find the element type in the system dictionary, | |
| 438 // we must build an array type around it. The CI requires array klasses | |
| 439 // to be loaded if their element klasses are loaded, except when memory | |
| 440 // is exhausted. | |
| 441 if (sym->byte_at(0) == '[' && | |
| 442 (sym->byte_at(1) == '[' || sym->byte_at(1) == 'L')) { | |
| 443 // We have an unloaded array. | |
| 444 // Build it on the fly if the element class exists. | |
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445 TempNewSymbol elem_sym = SymbolTable::new_symbol(sym->as_utf8()+1, |
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446 sym->utf8_length()-1, |
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447 KILL_COMPILE_ON_FATAL_(fail_type)); |
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448 |
| 0 | 449 // Get element ciKlass recursively. |
| 450 ciKlass* elem_klass = | |
| 451 get_klass_by_name_impl(accessing_klass, | |
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452 cpool, |
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453 get_symbol(elem_sym), |
| 0 | 454 require_local); |
| 455 if (elem_klass != NULL && elem_klass->is_loaded()) { | |
| 456 // Now make an array for it | |
| 457 return ciObjArrayKlass::make_impl(elem_klass); | |
| 458 } | |
| 459 } | |
| 460 | |
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461 if (found_klass() == NULL && !cpool.is_null() && cpool->has_preresolution()) { |
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462 // Look inside the constant pool for pre-resolved class entries. |
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463 for (int i = cpool->length() - 1; i >= 1; i--) { |
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464 if (cpool->tag_at(i).is_klass()) { |
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465 Klass* kls = cpool->resolved_klass_at(i); |
| 6983 | 466 if (kls->name() == sym) { |
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467 found_klass = KlassHandle(THREAD, kls); |
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468 break; |
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469 } |
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470 } |
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471 } |
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472 } |
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473 |
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474 if (found_klass() != NULL) { |
| 0 | 475 // Found it. Build a CI handle. |
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476 return get_klass(found_klass()); |
| 0 | 477 } |
| 478 | |
| 479 if (require_local) return NULL; | |
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480 |
| 0 | 481 // Not yet loaded into the VM, or not governed by loader constraints. |
| 482 // Make a CI representative for it. | |
| 483 return get_unloaded_klass(accessing_klass, name); | |
| 484 } | |
| 485 | |
| 486 // ------------------------------------------------------------------ | |
| 487 // ciEnv::get_klass_by_name | |
| 488 ciKlass* ciEnv::get_klass_by_name(ciKlass* accessing_klass, | |
| 489 ciSymbol* klass_name, | |
| 490 bool require_local) { | |
| 491 GUARDED_VM_ENTRY(return get_klass_by_name_impl(accessing_klass, | |
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492 constantPoolHandle(), |
| 0 | 493 klass_name, |
| 494 require_local);) | |
| 495 } | |
| 496 | |
| 497 // ------------------------------------------------------------------ | |
| 498 // ciEnv::get_klass_by_index_impl | |
| 499 // | |
| 500 // Implementation of get_klass_by_index. | |
|
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501 ciKlass* ciEnv::get_klass_by_index_impl(constantPoolHandle cpool, |
| 0 | 502 int index, |
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503 bool& is_accessible, |
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504 ciInstanceKlass* accessor) { |
| 0 | 505 EXCEPTION_CONTEXT; |
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506 KlassHandle klass; // = NULL; |
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507 Symbol* klass_name = NULL; |
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508 |
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509 if (cpool->tag_at(index).is_symbol()) { |
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510 klass_name = cpool->symbol_at(index); |
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511 } else { |
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512 // Check if it's resolved if it's not a symbol constant pool entry. |
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513 klass = KlassHandle(THREAD, ConstantPool::klass_at_if_loaded(cpool, index)); |
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514 |
| 0 | 515 if (klass.is_null()) { |
| 516 // The klass has not been inserted into the constant pool. | |
| 517 // Try to look it up by name. | |
| 518 { | |
| 519 // We have to lock the cpool to keep the oop from being resolved | |
| 520 // while we are accessing it. | |
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521 MonitorLockerEx ml(cpool->lock()); |
| 0 | 522 constantTag tag = cpool->tag_at(index); |
| 523 if (tag.is_klass()) { | |
| 524 // The klass has been inserted into the constant pool | |
| 525 // very recently. | |
| 526 klass = KlassHandle(THREAD, cpool->resolved_klass_at(index)); | |
| 527 } else { | |
| 528 assert(cpool->tag_at(index).is_unresolved_klass(), "wrong tag"); | |
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529 klass_name = cpool->unresolved_klass_at(index); |
| 0 | 530 } |
| 531 } | |
| 532 } | |
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533 } |
| 0 | 534 |
| 535 if (klass.is_null()) { | |
| 536 // Not found in constant pool. Use the name to do the lookup. | |
| 537 ciKlass* k = get_klass_by_name_impl(accessor, | |
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538 cpool, |
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539 get_symbol(klass_name), |
| 0 | 540 false); |
| 541 // Calculate accessibility the hard way. | |
| 542 if (!k->is_loaded()) { | |
| 543 is_accessible = false; | |
| 544 } else if (k->loader() != accessor->loader() && | |
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545 get_klass_by_name_impl(accessor, cpool, k->name(), true) == NULL) { |
| 0 | 546 // Loaded only remotely. Not linked yet. |
| 547 is_accessible = false; | |
| 548 } else { | |
| 549 // Linked locally, and we must also check public/private, etc. | |
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550 is_accessible = check_klass_accessibility(accessor, k->get_Klass()); |
| 0 | 551 } |
| 552 return k; | |
| 553 } | |
| 554 | |
| 555 // Check for prior unloaded klass. The SystemDictionary's answers | |
| 556 // can vary over time but the compiler needs consistency. | |
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557 ciSymbol* name = get_symbol(klass()->name()); |
| 0 | 558 ciKlass* unloaded_klass = check_get_unloaded_klass(accessor, name); |
| 559 if (unloaded_klass != NULL) { | |
| 560 is_accessible = false; | |
| 561 return unloaded_klass; | |
| 562 } | |
| 563 | |
| 564 // It is known to be accessible, since it was found in the constant pool. | |
| 565 is_accessible = true; | |
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566 return get_klass(klass()); |
| 0 | 567 } |
| 568 | |
| 569 // ------------------------------------------------------------------ | |
| 570 // ciEnv::get_klass_by_index | |
| 571 // | |
| 572 // Get a klass from the constant pool. | |
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573 ciKlass* ciEnv::get_klass_by_index(constantPoolHandle cpool, |
| 0 | 574 int index, |
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575 bool& is_accessible, |
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576 ciInstanceKlass* accessor) { |
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577 GUARDED_VM_ENTRY(return get_klass_by_index_impl(cpool, index, is_accessible, accessor);) |
| 0 | 578 } |
| 579 | |
| 580 // ------------------------------------------------------------------ | |
| 581 // ciEnv::get_constant_by_index_impl | |
| 582 // | |
| 583 // Implementation of get_constant_by_index(). | |
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584 ciConstant ciEnv::get_constant_by_index_impl(constantPoolHandle cpool, |
| 1602 | 585 int pool_index, int cache_index, |
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586 ciInstanceKlass* accessor) { |
| 1602 | 587 bool ignore_will_link; |
| 0 | 588 EXCEPTION_CONTEXT; |
| 1602 | 589 int index = pool_index; |
| 590 if (cache_index >= 0) { | |
| 591 assert(index < 0, "only one kind of index at a time"); | |
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592 oop obj = cpool->resolved_references()->obj_at(cache_index); |
| 1602 | 593 if (obj != NULL) { |
| 594 ciObject* ciobj = get_object(obj); | |
| 595 return ciConstant(T_OBJECT, ciobj); | |
| 596 } | |
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597 index = cpool->object_to_cp_index(cache_index); |
| 1602 | 598 } |
| 0 | 599 constantTag tag = cpool->tag_at(index); |
| 600 if (tag.is_int()) { | |
| 601 return ciConstant(T_INT, (jint)cpool->int_at(index)); | |
| 602 } else if (tag.is_long()) { | |
| 603 return ciConstant((jlong)cpool->long_at(index)); | |
| 604 } else if (tag.is_float()) { | |
| 605 return ciConstant((jfloat)cpool->float_at(index)); | |
| 606 } else if (tag.is_double()) { | |
| 607 return ciConstant((jdouble)cpool->double_at(index)); | |
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608 } else if (tag.is_string()) { |
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609 oop string = NULL; |
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610 assert(cache_index >= 0, "should have a cache index"); |
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611 if (cpool->is_pseudo_string_at(index)) { |
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612 string = cpool->pseudo_string_at(index, cache_index); |
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613 } else { |
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614 string = cpool->string_at(index, cache_index, THREAD); |
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615 if (HAS_PENDING_EXCEPTION) { |
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616 CLEAR_PENDING_EXCEPTION; |
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617 record_out_of_memory_failure(); |
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618 return ciConstant(); |
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619 } |
| 0 | 620 } |
| 621 ciObject* constant = get_object(string); | |
| 622 assert (constant->is_instance(), "must be an instance, or not? "); | |
| 623 return ciConstant(T_OBJECT, constant); | |
| 624 } else if (tag.is_klass() || tag.is_unresolved_klass()) { | |
| 625 // 4881222: allow ldc to take a class type | |
| 1602 | 626 ciKlass* klass = get_klass_by_index_impl(cpool, index, ignore_will_link, accessor); |
| 0 | 627 if (HAS_PENDING_EXCEPTION) { |
| 628 CLEAR_PENDING_EXCEPTION; | |
| 629 record_out_of_memory_failure(); | |
| 630 return ciConstant(); | |
| 631 } | |
| 632 assert (klass->is_instance_klass() || klass->is_array_klass(), | |
| 633 "must be an instance or array klass "); | |
| 1602 | 634 return ciConstant(T_OBJECT, klass->java_mirror()); |
| 635 } else if (tag.is_method_type()) { | |
| 636 // must execute Java code to link this CP entry into cache[i].f1 | |
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637 ciSymbol* signature = get_symbol(cpool->method_type_signature_at(index)); |
| 1602 | 638 ciObject* ciobj = get_unloaded_method_type_constant(signature); |
| 639 return ciConstant(T_OBJECT, ciobj); | |
| 640 } else if (tag.is_method_handle()) { | |
| 641 // must execute Java code to link this CP entry into cache[i].f1 | |
| 642 int ref_kind = cpool->method_handle_ref_kind_at(index); | |
| 643 int callee_index = cpool->method_handle_klass_index_at(index); | |
| 644 ciKlass* callee = get_klass_by_index_impl(cpool, callee_index, ignore_will_link, accessor); | |
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645 ciSymbol* name = get_symbol(cpool->method_handle_name_ref_at(index)); |
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646 ciSymbol* signature = get_symbol(cpool->method_handle_signature_ref_at(index)); |
| 1602 | 647 ciObject* ciobj = get_unloaded_method_handle_constant(callee, name, signature, ref_kind); |
| 648 return ciConstant(T_OBJECT, ciobj); | |
| 0 | 649 } else { |
| 650 ShouldNotReachHere(); | |
| 651 return ciConstant(); | |
| 652 } | |
| 653 } | |
| 654 | |
| 655 // ------------------------------------------------------------------ | |
| 656 // ciEnv::get_constant_by_index | |
| 657 // | |
| 658 // Pull a constant out of the constant pool. How appropriate. | |
| 659 // | |
| 660 // Implementation note: this query is currently in no way cached. | |
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661 ciConstant ciEnv::get_constant_by_index(constantPoolHandle cpool, |
| 1602 | 662 int pool_index, int cache_index, |
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663 ciInstanceKlass* accessor) { |
| 1602 | 664 GUARDED_VM_ENTRY(return get_constant_by_index_impl(cpool, pool_index, cache_index, accessor);) |
| 0 | 665 } |
| 666 | |
| 667 // ------------------------------------------------------------------ | |
| 668 // ciEnv::get_field_by_index_impl | |
| 669 // | |
| 670 // Implementation of get_field_by_index. | |
| 671 // | |
| 672 // Implementation note: the results of field lookups are cached | |
| 673 // in the accessor klass. | |
| 674 ciField* ciEnv::get_field_by_index_impl(ciInstanceKlass* accessor, | |
| 675 int index) { | |
| 676 ciConstantPoolCache* cache = accessor->field_cache(); | |
| 677 if (cache == NULL) { | |
| 678 ciField* field = new (arena()) ciField(accessor, index); | |
| 679 return field; | |
| 680 } else { | |
| 681 ciField* field = (ciField*)cache->get(index); | |
| 682 if (field == NULL) { | |
| 683 field = new (arena()) ciField(accessor, index); | |
| 684 cache->insert(index, field); | |
| 685 } | |
| 686 return field; | |
| 687 } | |
| 688 } | |
| 689 | |
| 690 // ------------------------------------------------------------------ | |
| 691 // ciEnv::get_field_by_index | |
| 692 // | |
| 693 // Get a field by index from a klass's constant pool. | |
| 694 ciField* ciEnv::get_field_by_index(ciInstanceKlass* accessor, | |
| 695 int index) { | |
| 696 GUARDED_VM_ENTRY(return get_field_by_index_impl(accessor, index);) | |
| 697 } | |
| 698 | |
| 699 // ------------------------------------------------------------------ | |
| 700 // ciEnv::lookup_method | |
| 701 // | |
| 702 // Perform an appropriate method lookup based on accessor, holder, | |
| 703 // name, signature, and bytecode. | |
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704 Method* ciEnv::lookup_method(InstanceKlass* accessor, |
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705 InstanceKlass* holder, |
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706 Symbol* name, |
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707 Symbol* sig, |
| 0 | 708 Bytecodes::Code bc) { |
| 709 EXCEPTION_CONTEXT; | |
| 710 KlassHandle h_accessor(THREAD, accessor); | |
| 711 KlassHandle h_holder(THREAD, holder); | |
| 712 LinkResolver::check_klass_accessability(h_accessor, h_holder, KILL_COMPILE_ON_FATAL_(NULL)); | |
| 713 methodHandle dest_method; | |
| 714 switch (bc) { | |
| 715 case Bytecodes::_invokestatic: | |
| 716 dest_method = | |
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717 LinkResolver::resolve_static_call_or_null(h_holder, name, sig, h_accessor); |
| 0 | 718 break; |
| 719 case Bytecodes::_invokespecial: | |
| 720 dest_method = | |
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721 LinkResolver::resolve_special_call_or_null(h_holder, name, sig, h_accessor); |
| 0 | 722 break; |
| 723 case Bytecodes::_invokeinterface: | |
| 724 dest_method = | |
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725 LinkResolver::linktime_resolve_interface_method_or_null(h_holder, name, sig, |
| 0 | 726 h_accessor, true); |
| 727 break; | |
| 728 case Bytecodes::_invokevirtual: | |
| 729 dest_method = | |
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730 LinkResolver::linktime_resolve_virtual_method_or_null(h_holder, name, sig, |
| 0 | 731 h_accessor, true); |
| 732 break; | |
| 733 default: ShouldNotReachHere(); | |
| 734 } | |
| 735 | |
| 736 return dest_method(); | |
| 737 } | |
| 738 | |
| 739 | |
| 740 // ------------------------------------------------------------------ | |
| 741 // ciEnv::get_method_by_index_impl | |
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742 ciMethod* ciEnv::get_method_by_index_impl(constantPoolHandle cpool, |
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743 int index, Bytecodes::Code bc, |
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744 ciInstanceKlass* accessor) { |
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745 if (bc == Bytecodes::_invokedynamic) { |
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746 ConstantPoolCacheEntry* cpce = cpool->invokedynamic_cp_cache_entry_at(index); |
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747 bool is_resolved = !cpce->is_f1_null(); |
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748 // FIXME: code generation could allow for null (unlinked) call site |
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749 // The call site could be made patchable as follows: |
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750 // Load the appendix argument from the constant pool. |
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751 // Test the appendix argument and jump to a known deopt routine if it is null. |
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752 // Jump through a patchable call site, which is initially a deopt routine. |
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753 // Patch the call site to the nmethod entry point of the static compiled lambda form. |
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754 // As with other two-component call sites, both values must be independently verified. |
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755 |
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756 if (is_resolved) { |
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757 // Get the invoker Method* from the constant pool. |
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758 // (The appendix argument, if any, will be noted in the method's signature.) |
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759 Method* adapter = cpce->f1_as_method(); |
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760 return get_method(adapter); |
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761 } |
| 0 | 762 |
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763 // Fake a method that is equivalent to a declared method. |
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764 ciInstanceKlass* holder = get_instance_klass(SystemDictionary::MethodHandle_klass()); |
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765 ciSymbol* name = ciSymbol::invokeBasic_name(); |
|
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766 ciSymbol* signature = get_symbol(cpool->signature_ref_at(index)); |
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767 return get_unloaded_method(holder, name, signature, accessor); |
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768 } else { |
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769 const int holder_index = cpool->klass_ref_index_at(index); |
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770 bool holder_is_accessible; |
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771 ciKlass* holder = get_klass_by_index_impl(cpool, holder_index, holder_is_accessible, accessor); |
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772 ciInstanceKlass* declared_holder = get_instance_klass_for_declared_method_holder(holder); |
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773 |
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774 // Get the method's name and signature. |
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775 Symbol* name_sym = cpool->name_ref_at(index); |
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776 Symbol* sig_sym = cpool->signature_ref_at(index); |
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777 |
|
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778 if (cpool->has_preresolution() |
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779 || (holder == ciEnv::MethodHandle_klass() && |
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780 MethodHandles::is_signature_polymorphic_name(holder->get_Klass(), name_sym))) { |
|
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781 // Short-circuit lookups for JSR 292-related call sites. |
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782 // That is, do not rely only on name-based lookups, because they may fail |
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783 // if the names are not resolvable in the boot class loader (7056328). |
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784 switch (bc) { |
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785 case Bytecodes::_invokevirtual: |
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786 case Bytecodes::_invokeinterface: |
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787 case Bytecodes::_invokespecial: |
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788 case Bytecodes::_invokestatic: |
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789 { |
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790 Method* m = ConstantPool::method_at_if_loaded(cpool, index); |
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791 if (m != NULL) { |
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792 return get_method(m); |
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793 } |
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794 } |
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795 break; |
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796 } |
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797 } |
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798 |
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799 if (holder_is_accessible) { // Our declared holder is loaded. |
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800 InstanceKlass* lookup = declared_holder->get_instanceKlass(); |
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801 Method* m = lookup_method(accessor->get_instanceKlass(), lookup, name_sym, sig_sym, bc); |
|
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802 if (m != NULL && |
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803 (bc == Bytecodes::_invokestatic |
|
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804 ? m->method_holder()->is_not_initialized() |
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805 : !m->method_holder()->is_loaded())) { |
|
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806 m = NULL; |
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807 } |
|
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808 #ifdef ASSERT |
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809 if (m != NULL && ReplayCompiles && !ciReplay::is_loaded(m)) { |
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810 m = NULL; |
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811 } |
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812 #endif |
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813 if (m != NULL) { |
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814 // We found the method. |
|
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815 return get_method(m); |
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816 } |
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817 } |
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818 |
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819 // Either the declared holder was not loaded, or the method could |
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820 // not be found. Create a dummy ciMethod to represent the failed |
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821 // lookup. |
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822 ciSymbol* name = get_symbol(name_sym); |
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823 ciSymbol* signature = get_symbol(sig_sym); |
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824 return get_unloaded_method(declared_holder, name, signature, accessor); |
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825 } |
|
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826 } |
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827 |
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828 |
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829 // ------------------------------------------------------------------ |
| 0 | 830 // ciEnv::get_instance_klass_for_declared_method_holder |
| 831 ciInstanceKlass* ciEnv::get_instance_klass_for_declared_method_holder(ciKlass* method_holder) { | |
| 832 // For the case of <array>.clone(), the method holder can be a ciArrayKlass | |
| 833 // instead of a ciInstanceKlass. For that case simply pretend that the | |
| 834 // declared holder is Object.clone since that's where the call will bottom out. | |
| 835 // A more correct fix would trickle out through many interfaces in CI, | |
| 836 // requiring ciInstanceKlass* to become ciKlass* and many more places would | |
| 837 // require checks to make sure the expected type was found. Given that this | |
| 838 // only occurs for clone() the more extensive fix seems like overkill so | |
| 839 // instead we simply smear the array type into Object. | |
|
8777
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840 guarantee(method_holder != NULL, "no method holder"); |
| 0 | 841 if (method_holder->is_instance_klass()) { |
| 842 return method_holder->as_instance_klass(); | |
| 843 } else if (method_holder->is_array_klass()) { | |
| 844 return current()->Object_klass(); | |
| 845 } else { | |
| 846 ShouldNotReachHere(); | |
| 847 } | |
| 848 return NULL; | |
| 849 } | |
| 850 | |
| 851 | |
| 852 // ------------------------------------------------------------------ | |
| 853 // ciEnv::get_method_by_index | |
|
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854 ciMethod* ciEnv::get_method_by_index(constantPoolHandle cpool, |
|
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855 int index, Bytecodes::Code bc, |
|
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856 ciInstanceKlass* accessor) { |
|
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857 GUARDED_VM_ENTRY(return get_method_by_index_impl(cpool, index, bc, accessor);) |
| 0 | 858 } |
| 859 | |
|
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860 |
| 0 | 861 // ------------------------------------------------------------------ |
| 862 // ciEnv::name_buffer | |
| 863 char *ciEnv::name_buffer(int req_len) { | |
| 864 if (_name_buffer_len < req_len) { | |
| 865 if (_name_buffer == NULL) { | |
| 866 _name_buffer = (char*)arena()->Amalloc(sizeof(char)*req_len); | |
| 867 _name_buffer_len = req_len; | |
| 868 } else { | |
| 869 _name_buffer = | |
| 870 (char*)arena()->Arealloc(_name_buffer, _name_buffer_len, req_len); | |
| 871 _name_buffer_len = req_len; | |
| 872 } | |
| 873 } | |
| 874 return _name_buffer; | |
| 875 } | |
| 876 | |
| 877 // ------------------------------------------------------------------ | |
| 878 // ciEnv::is_in_vm | |
| 879 bool ciEnv::is_in_vm() { | |
| 880 return JavaThread::current()->thread_state() == _thread_in_vm; | |
| 881 } | |
| 882 | |
| 883 bool ciEnv::system_dictionary_modification_counter_changed() { | |
| 884 return _system_dictionary_modification_counter != SystemDictionary::number_of_modifications(); | |
| 885 } | |
| 886 | |
| 887 // ------------------------------------------------------------------ | |
|
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888 // ciEnv::validate_compile_task_dependencies |
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889 // |
|
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890 // Check for changes during compilation (e.g. class loads, evolution, |
|
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891 // breakpoints, call site invalidation). |
|
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892 void ciEnv::validate_compile_task_dependencies(ciMethod* target) { |
| 0 | 893 if (failing()) return; // no need for further checks |
| 894 | |
|
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895 // First, check non-klass dependencies as we might return early and |
|
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896 // not check klass dependencies if the system dictionary |
|
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897 // modification counter hasn't changed (see below). |
|
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898 for (Dependencies::DepStream deps(dependencies()); deps.next(); ) { |
|
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899 if (deps.is_klass_type()) continue; // skip klass dependencies |
|
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900 Klass* witness = deps.check_dependency(); |
|
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901 if (witness != NULL) { |
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902 record_failure("invalid non-klass dependency"); |
|
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903 return; |
|
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|
904 } |
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|
905 } |
| 0 | 906 |
|
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907 // Klass dependencies must be checked when the system dictionary |
|
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908 // changes. If logging is enabled all violated dependences will be |
|
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909 // recorded in the log. In debug mode check dependencies even if |
|
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910 // the system dictionary hasn't changed to verify that no invalid |
|
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911 // dependencies were inserted. Any violated dependences in this |
|
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|
912 // case are dumped to the tty. |
| 0 | 913 bool counter_changed = system_dictionary_modification_counter_changed(); |
| 914 | |
| 3959 | 915 bool verify_deps = trueInDebug; |
| 916 if (!counter_changed && !verify_deps) return; | |
| 917 | |
|
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918 int klass_violations = 0; |
| 0 | 919 for (Dependencies::DepStream deps(dependencies()); deps.next(); ) { |
|
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920 if (!deps.is_klass_type()) continue; // skip non-klass dependencies |
|
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921 Klass* witness = deps.check_dependency(); |
| 0 | 922 if (witness != NULL) { |
|
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923 klass_violations++; |
| 3959 | 924 if (!counter_changed) { |
| 925 // Dependence failed but counter didn't change. Log a message | |
| 926 // describing what failed and allow the assert at the end to | |
| 927 // trigger. | |
| 928 deps.print_dependency(witness); | |
| 929 } else if (xtty == NULL) { | |
| 930 // If we're not logging then a single violation is sufficient, | |
| 931 // otherwise we want to log all the dependences which were | |
| 932 // violated. | |
| 933 break; | |
| 934 } | |
| 0 | 935 } |
| 936 } | |
| 937 | |
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938 if (klass_violations != 0) { |
| 3959 | 939 #ifdef ASSERT |
| 940 if (!counter_changed && !PrintCompilation) { | |
| 941 // Print out the compile task that failed | |
| 942 _task->print_line(); | |
| 943 } | |
| 944 #endif | |
| 0 | 945 assert(counter_changed, "failed dependencies, but counter didn't change"); |
| 946 record_failure("concurrent class loading"); | |
| 947 } | |
| 948 } | |
| 949 | |
| 950 // ------------------------------------------------------------------ | |
| 951 // ciEnv::register_method | |
| 952 void ciEnv::register_method(ciMethod* target, | |
| 953 int entry_bci, | |
| 954 CodeOffsets* offsets, | |
| 955 int orig_pc_offset, | |
| 956 CodeBuffer* code_buffer, | |
| 957 int frame_words, | |
| 958 OopMapSet* oop_map_set, | |
| 959 ExceptionHandlerTable* handler_table, | |
| 960 ImplicitExceptionTable* inc_table, | |
| 961 AbstractCompiler* compiler, | |
| 962 int comp_level, | |
|
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963 bool has_unsafe_access, |
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964 bool has_wide_vectors) { |
| 0 | 965 VM_ENTRY_MARK; |
| 966 nmethod* nm = NULL; | |
| 967 { | |
| 968 // To prevent compile queue updates. | |
| 969 MutexLocker locker(MethodCompileQueue_lock, THREAD); | |
| 970 | |
| 971 // Prevent SystemDictionary::add_to_hierarchy from running | |
| 972 // and invalidating our dependencies until we install this method. | |
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973 // No safepoints are allowed. Otherwise, class redefinition can occur in between. |
| 0 | 974 MutexLocker ml(Compile_lock); |
|
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975 No_Safepoint_Verifier nsv; |
| 0 | 976 |
|
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977 // Change in Jvmti state may invalidate compilation. |
|
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978 if (!failing() && jvmti_state_changed()) { |
|
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979 record_failure("Jvmti state change invalidated dependencies"); |
| 0 | 980 } |
| 981 | |
|
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982 // Change in DTrace flags may invalidate compilation. |
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983 if (!failing() && |
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984 ( (!dtrace_extended_probes() && ExtendedDTraceProbes) || |
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985 (!dtrace_method_probes() && DTraceMethodProbes) || |
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986 (!dtrace_alloc_probes() && DTraceAllocProbes) )) { |
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987 record_failure("DTrace flags change invalidated dependencies"); |
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988 } |
| 0 | 989 |
|
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990 if (!failing()) { |
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991 if (log() != NULL) { |
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992 // Log the dependencies which this compilation declares. |
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993 dependencies()->log_all_dependencies(); |
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994 } |
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995 |
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996 // Encode the dependencies now, so we can check them right away. |
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997 dependencies()->encode_content_bytes(); |
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998 |
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999 // Check for {class loads, evolution, breakpoints, ...} during compilation |
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1000 validate_compile_task_dependencies(target); |
|
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1001 } |
| 0 | 1002 |
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1003 methodHandle method(THREAD, target->get_Method()); |
| 0 | 1004 |
| 1005 if (failing()) { | |
| 1006 // While not a true deoptimization, it is a preemptive decompile. | |
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1007 MethodData* mdo = method()->method_data(); |
| 0 | 1008 if (mdo != NULL) { |
| 1009 mdo->inc_decompile_count(); | |
| 1010 } | |
| 1011 | |
| 1012 // All buffers in the CodeBuffer are allocated in the CodeCache. | |
| 1013 // If the code buffer is created on each compile attempt | |
| 1014 // as in C2, then it must be freed. | |
| 1015 code_buffer->free_blob(); | |
| 1016 return; | |
| 1017 } | |
| 1018 | |
| 1019 assert(offsets->value(CodeOffsets::Deopt) != -1, "must have deopt entry"); | |
| 1020 assert(offsets->value(CodeOffsets::Exceptions) != -1, "must have exception entry"); | |
| 1021 | |
| 1022 nm = nmethod::new_nmethod(method, | |
| 1023 compile_id(), | |
| 1024 entry_bci, | |
| 1025 offsets, | |
| 1026 orig_pc_offset, | |
| 1027 debug_info(), dependencies(), code_buffer, | |
| 1028 frame_words, oop_map_set, | |
| 1029 handler_table, inc_table, | |
| 1030 compiler, comp_level); | |
| 1031 | |
| 1032 // Free codeBlobs | |
| 1033 code_buffer->free_blob(); | |
| 1034 | |
|
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1035 if (nm != NULL) { |
| 0 | 1036 nm->set_has_unsafe_access(has_unsafe_access); |
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1037 nm->set_has_wide_vectors(has_wide_vectors); |
| 0 | 1038 |
| 1039 // Record successful registration. | |
| 1040 // (Put nm into the task handle *before* publishing to the Java heap.) | |
|
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1041 if (task() != NULL) { |
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1042 task()->set_code(nm); |
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1043 } |
| 0 | 1044 |
| 1045 if (entry_bci == InvocationEntryBci) { | |
| 1783 | 1046 if (TieredCompilation) { |
| 1047 // If there is an old version we're done with it | |
| 1048 nmethod* old = method->code(); | |
| 1049 if (TraceMethodReplacement && old != NULL) { | |
| 1050 ResourceMark rm; | |
| 1051 char *method_name = method->name_and_sig_as_C_string(); | |
| 1052 tty->print_cr("Replacing method %s", method_name); | |
| 1053 } | |
|
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1054 if (old != NULL) { |
| 1783 | 1055 old->make_not_entrant(); |
| 1056 } | |
| 0 | 1057 } |
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1058 if (TraceNMethodInstalls) { |
| 0 | 1059 ResourceMark rm; |
| 1060 char *method_name = method->name_and_sig_as_C_string(); | |
| 1061 ttyLocker ttyl; | |
| 1062 tty->print_cr("Installing method (%d) %s ", | |
| 1063 comp_level, | |
| 1064 method_name); | |
| 1065 } | |
| 1066 // Allow the code to be executed | |
| 1067 method->set_code(method, nm); | |
| 1068 } else { | |
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1069 if (TraceNMethodInstalls) { |
| 0 | 1070 ResourceMark rm; |
| 1071 char *method_name = method->name_and_sig_as_C_string(); | |
| 1072 ttyLocker ttyl; | |
| 1073 tty->print_cr("Installing osr method (%d) %s @ %d", | |
| 1074 comp_level, | |
| 1075 method_name, | |
| 1076 entry_bci); | |
| 1077 } | |
|
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1078 method->method_holder()->add_osr_nmethod(nm); |
| 0 | 1079 } |
| 1080 } | |
|
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1081 } // safepoints are allowed again |
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1082 |
| 0 | 1083 if (nm != NULL) { |
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1084 // JVMTI -- compiled method notification (must be done outside lock) |
| 0 | 1085 nm->post_compiled_method_load_event(); |
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1086 } else { |
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1087 // The CodeCache is full. Print out warning and disable compilation. |
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1088 record_failure("code cache is full"); |
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1089 CompileBroker::handle_full_code_cache(); |
| 0 | 1090 } |
| 1091 } | |
| 1092 | |
| 1093 | |
| 1094 // ------------------------------------------------------------------ | |
| 1095 // ciEnv::find_system_klass | |
| 1096 ciKlass* ciEnv::find_system_klass(ciSymbol* klass_name) { | |
| 1097 VM_ENTRY_MARK; | |
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1098 return get_klass_by_name_impl(NULL, constantPoolHandle(), klass_name, false); |
| 0 | 1099 } |
| 1100 | |
| 1101 // ------------------------------------------------------------------ | |
| 1102 // ciEnv::comp_level | |
| 1103 int ciEnv::comp_level() { | |
| 1783 | 1104 if (task() == NULL) return CompLevel_highest_tier; |
| 0 | 1105 return task()->comp_level(); |
| 1106 } | |
| 1107 | |
| 1108 // ------------------------------------------------------------------ | |
| 1109 // ciEnv::compile_id | |
| 1110 uint ciEnv::compile_id() { | |
| 1111 if (task() == NULL) return 0; | |
| 1112 return task()->compile_id(); | |
| 1113 } | |
| 1114 | |
| 1115 // ------------------------------------------------------------------ | |
| 1116 // ciEnv::notice_inlined_method() | |
| 1117 void ciEnv::notice_inlined_method(ciMethod* method) { | |
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1118 _num_inlined_bytecodes += method->code_size_for_inlining(); |
| 0 | 1119 } |
| 1120 | |
| 1121 // ------------------------------------------------------------------ | |
| 1122 // ciEnv::num_inlined_bytecodes() | |
| 1123 int ciEnv::num_inlined_bytecodes() const { | |
| 1124 return _num_inlined_bytecodes; | |
| 1125 } | |
| 1126 | |
| 1127 // ------------------------------------------------------------------ | |
| 1128 // ciEnv::record_failure() | |
| 1129 void ciEnv::record_failure(const char* reason) { | |
| 1130 if (log() != NULL) { | |
| 1131 log()->elem("failure reason='%s'", reason); | |
| 1132 } | |
| 1133 if (_failure_reason == NULL) { | |
| 1134 // Record the first failure reason. | |
| 1135 _failure_reason = reason; | |
| 1136 } | |
| 1137 } | |
| 1138 | |
| 1139 // ------------------------------------------------------------------ | |
| 1140 // ciEnv::record_method_not_compilable() | |
| 1141 void ciEnv::record_method_not_compilable(const char* reason, bool all_tiers) { | |
| 1142 int new_compilable = | |
| 1143 all_tiers ? MethodCompilable_never : MethodCompilable_not_at_tier ; | |
| 1144 | |
| 1145 // Only note transitions to a worse state | |
| 1146 if (new_compilable > _compilable) { | |
| 1147 if (log() != NULL) { | |
| 1148 if (all_tiers) { | |
| 1149 log()->elem("method_not_compilable"); | |
| 1150 } else { | |
| 6843 | 1151 log()->elem("method_not_compilable_at_tier level='%d'", |
| 1152 current()->task()->comp_level()); | |
| 0 | 1153 } |
| 1154 } | |
| 1155 _compilable = new_compilable; | |
| 1156 | |
| 1157 // Reset failure reason; this one is more important. | |
| 1158 _failure_reason = NULL; | |
| 1159 record_failure(reason); | |
| 1160 } | |
| 1161 } | |
| 1162 | |
| 1163 // ------------------------------------------------------------------ | |
| 1164 // ciEnv::record_out_of_memory_failure() | |
| 1165 void ciEnv::record_out_of_memory_failure() { | |
| 1166 // If memory is low, we stop compiling methods. | |
| 1167 record_method_not_compilable("out of memory"); | |
| 1168 } | |
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1169 |
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1170 ciInstance* ciEnv::unloaded_ciinstance() { |
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1171 GUARDED_VM_ENTRY(return _factory->get_unloaded_object_constant();) |
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1172 } |
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1173 |
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1174 // ------------------------------------------------------------------ |
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1175 // ciEnv::dump_replay_data* |
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1176 |
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1177 // Don't change thread state and acquire any locks. |
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1178 // Safe to call from VM error reporter. |
| 14232 | 1179 |
| 1180 void ciEnv::dump_compile_data(outputStream* out) { | |
| 1181 CompileTask* task = this->task(); | |
| 1182 Method* method = task->method(); | |
| 1183 int entry_bci = task->osr_bci(); | |
| 1184 int comp_level = task->comp_level(); | |
| 1185 out->print("compile %s %s %s %d %d", | |
| 1186 method->klass_name()->as_quoted_ascii(), | |
| 1187 method->name()->as_quoted_ascii(), | |
| 1188 method->signature()->as_quoted_ascii(), | |
| 1189 entry_bci, comp_level); | |
| 1190 if (compiler_data() != NULL) { | |
| 1191 if (is_c2_compile(comp_level)) { // C2 or Shark | |
| 1192 #ifdef COMPILER2 | |
| 1193 // Dump C2 inlining data. | |
| 1194 ((Compile*)compiler_data())->dump_inline_data(out); | |
| 1195 #endif | |
| 1196 } else if (is_c1_compile(comp_level)) { // C1 | |
| 1197 #ifdef COMPILER1 | |
| 1198 // Dump C1 inlining data. | |
| 1199 ((Compilation*)compiler_data())->dump_inline_data(out); | |
| 1200 #endif | |
| 1201 } | |
| 1202 } | |
| 1203 out->cr(); | |
| 1204 } | |
| 1205 | |
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1206 void ciEnv::dump_replay_data_unsafe(outputStream* out) { |
|
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1207 ResourceMark rm; |
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1208 #if INCLUDE_JVMTI |
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1209 out->print_cr("JvmtiExport can_access_local_variables %d", _jvmti_can_access_local_variables); |
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1210 out->print_cr("JvmtiExport can_hotswap_or_post_breakpoint %d", _jvmti_can_hotswap_or_post_breakpoint); |
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1211 out->print_cr("JvmtiExport can_post_on_exceptions %d", _jvmti_can_post_on_exceptions); |
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1212 #endif // INCLUDE_JVMTI |
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1213 |
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1214 GrowableArray<ciMetadata*>* objects = _factory->get_ci_metadata(); |
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1215 out->print_cr("# %d ciObject found", objects->length()); |
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1216 for (int i = 0; i < objects->length(); i++) { |
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1217 objects->at(i)->dump_replay_data(out); |
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1218 } |
| 14232 | 1219 dump_compile_data(out); |
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1220 out->flush(); |
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1221 } |
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1222 |
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1223 void ciEnv::dump_replay_data(outputStream* out) { |
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1224 GUARDED_VM_ENTRY( |
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1225 MutexLocker ml(Compile_lock); |
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1226 dump_replay_data_unsafe(out); |
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1227 ) |
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1228 } |
| 14232 | 1229 |
| 1230 void ciEnv::dump_replay_data(int compile_id) { | |
| 1231 static char buffer[O_BUFLEN]; | |
| 1232 int ret = jio_snprintf(buffer, O_BUFLEN, "replay_pid%p_compid%d.log", os::current_process_id(), compile_id); | |
| 1233 if (ret > 0) { | |
| 1234 int fd = open(buffer, O_RDWR | O_CREAT | O_TRUNC, 0666); | |
| 1235 if (fd != -1) { | |
| 1236 FILE* replay_data_file = os::open(fd, "w"); | |
| 1237 if (replay_data_file != NULL) { | |
| 1238 fileStream replay_data_stream(replay_data_file, /*need_close=*/true); | |
| 1239 dump_replay_data(&replay_data_stream); | |
| 1240 tty->print("# Compiler replay data is saved as: "); | |
| 1241 tty->print_cr(buffer); | |
| 1242 } else { | |
| 1243 tty->print_cr("# Can't open file to dump replay data."); | |
| 1244 } | |
| 1245 } | |
| 1246 } | |
| 1247 } | |
| 1248 | |
| 1249 void ciEnv::dump_inline_data(int compile_id) { | |
| 1250 static char buffer[O_BUFLEN]; | |
| 1251 int ret = jio_snprintf(buffer, O_BUFLEN, "inline_pid%p_compid%d.log", os::current_process_id(), compile_id); | |
| 1252 if (ret > 0) { | |
| 1253 int fd = open(buffer, O_RDWR | O_CREAT | O_TRUNC, 0666); | |
| 1254 if (fd != -1) { | |
| 1255 FILE* inline_data_file = os::open(fd, "w"); | |
| 1256 if (inline_data_file != NULL) { | |
| 1257 fileStream replay_data_stream(inline_data_file, /*need_close=*/true); | |
| 1258 GUARDED_VM_ENTRY( | |
| 1259 MutexLocker ml(Compile_lock); | |
| 1260 dump_compile_data(&replay_data_stream); | |
| 1261 ) | |
| 1262 replay_data_stream.flush(); | |
| 1263 tty->print("# Compiler inline data is saved as: "); | |
| 1264 tty->print_cr(buffer); | |
| 1265 } else { | |
| 1266 tty->print_cr("# Can't open file to dump inline data."); | |
| 1267 } | |
| 1268 } | |
| 1269 } | |
| 1270 } |