Mercurial > hg > truffle
annotate src/share/vm/ci/ciMethod.cpp @ 12355:cefad50507d8
Merge with hs25-b53
| author | Gilles Duboscq <duboscq@ssw.jku.at> |
|---|---|
| date | Fri, 11 Oct 2013 10:38:03 +0200 |
| parents | 836a62f43af9 b2e698d2276c |
| children | 096c224171c4 |
| rev | line source |
|---|---|
| 0 | 1 /* |
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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/ciCallProfile.hpp" | |
| 27 #include "ci/ciExceptionHandler.hpp" | |
| 28 #include "ci/ciInstanceKlass.hpp" | |
| 29 #include "ci/ciMethod.hpp" | |
| 30 #include "ci/ciMethodBlocks.hpp" | |
| 31 #include "ci/ciMethodData.hpp" | |
| 32 #include "ci/ciStreams.hpp" | |
| 33 #include "ci/ciSymbol.hpp" | |
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34 #include "ci/ciReplay.hpp" |
| 1972 | 35 #include "ci/ciUtilities.hpp" |
| 36 #include "classfile/systemDictionary.hpp" | |
| 37 #include "compiler/abstractCompiler.hpp" | |
| 38 #include "compiler/compilerOracle.hpp" | |
| 39 #include "compiler/methodLiveness.hpp" | |
| 40 #include "interpreter/interpreter.hpp" | |
| 41 #include "interpreter/linkResolver.hpp" | |
| 42 #include "interpreter/oopMapCache.hpp" | |
| 43 #include "memory/allocation.inline.hpp" | |
| 44 #include "memory/resourceArea.hpp" | |
| 45 #include "oops/generateOopMap.hpp" | |
| 46 #include "oops/oop.inline.hpp" | |
| 47 #include "prims/nativeLookup.hpp" | |
| 48 #include "runtime/deoptimization.hpp" | |
| 49 #include "utilities/bitMap.inline.hpp" | |
| 50 #include "utilities/xmlstream.hpp" | |
| 51 #ifdef COMPILER2 | |
| 52 #include "ci/bcEscapeAnalyzer.hpp" | |
| 53 #include "ci/ciTypeFlow.hpp" | |
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54 #include "oops/method.hpp" |
| 1972 | 55 #endif |
| 56 #ifdef SHARK | |
| 57 #include "ci/ciTypeFlow.hpp" | |
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58 #include "oops/method.hpp" |
| 1972 | 59 #endif |
| 0 | 60 |
| 61 // ciMethod | |
| 62 // | |
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63 // This class represents a Method* in the HotSpot virtual |
| 0 | 64 // machine. |
| 65 | |
| 66 | |
| 67 // ------------------------------------------------------------------ | |
| 68 // ciMethod::ciMethod | |
| 69 // | |
| 70 // Loaded method. | |
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71 ciMethod::ciMethod(methodHandle h_m) : ciMetadata(h_m()) { |
| 0 | 72 assert(h_m() != NULL, "no null method"); |
| 73 | |
| 74 // These fields are always filled in in loaded methods. | |
| 75 _flags = ciFlags(h_m()->access_flags()); | |
| 76 | |
| 77 // Easy to compute, so fill them in now. | |
| 78 _max_stack = h_m()->max_stack(); | |
| 79 _max_locals = h_m()->max_locals(); | |
| 80 _code_size = h_m()->code_size(); | |
| 81 _intrinsic_id = h_m()->intrinsic_id(); | |
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82 _handler_count = h_m()->exception_table_length(); |
| 0 | 83 _uses_monitors = h_m()->access_flags().has_monitor_bytecodes(); |
| 84 _balanced_monitors = !_uses_monitors || h_m()->access_flags().is_monitor_matching(); | |
| 1783 | 85 _is_c1_compilable = !h_m()->is_not_c1_compilable(); |
| 86 _is_c2_compilable = !h_m()->is_not_c2_compilable(); | |
| 0 | 87 // Lazy fields, filled in on demand. Require allocation. |
| 88 _code = NULL; | |
| 89 _exception_handlers = NULL; | |
| 90 _liveness = NULL; | |
| 91 _method_blocks = NULL; | |
| 1692 | 92 #if defined(COMPILER2) || defined(SHARK) |
| 0 | 93 _flow = NULL; |
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94 _bcea = NULL; |
| 1692 | 95 #endif // COMPILER2 || SHARK |
| 0 | 96 |
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97 ciEnv *env = CURRENT_ENV; |
| 1783 | 98 if (env->jvmti_can_hotswap_or_post_breakpoint() && can_be_compiled()) { |
| 0 | 99 // 6328518 check hotswap conditions under the right lock. |
| 100 MutexLocker locker(Compile_lock); | |
| 101 if (Dependencies::check_evol_method(h_m()) != NULL) { | |
| 1783 | 102 _is_c1_compilable = false; |
| 103 _is_c2_compilable = false; | |
| 0 | 104 } |
| 105 } else { | |
| 106 CHECK_UNHANDLED_OOPS_ONLY(Thread::current()->clear_unhandled_oops()); | |
| 107 } | |
| 108 | |
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109 if (h_m()->method_holder()->is_linked()) { |
| 0 | 110 _can_be_statically_bound = h_m()->can_be_statically_bound(); |
| 111 } else { | |
| 112 // Have to use a conservative value in this case. | |
| 113 _can_be_statically_bound = false; | |
| 114 } | |
| 115 | |
| 116 // Adjust the definition of this condition to be more useful: | |
| 117 // %%% take these conditions into account in vtable generation | |
| 118 if (!_can_be_statically_bound && h_m()->is_private()) | |
| 119 _can_be_statically_bound = true; | |
| 120 if (_can_be_statically_bound && h_m()->is_abstract()) | |
| 121 _can_be_statically_bound = false; | |
| 122 | |
| 123 // generating _signature may allow GC and therefore move m. | |
| 124 // These fields are always filled in. | |
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125 _name = env->get_symbol(h_m()->name()); |
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126 _holder = env->get_instance_klass(h_m()->method_holder()); |
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127 ciSymbol* sig_symbol = env->get_symbol(h_m()->signature()); |
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128 constantPoolHandle cpool = h_m()->constants(); |
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129 _signature = new (env->arena()) ciSignature(_holder, cpool, sig_symbol); |
| 0 | 130 _method_data = NULL; |
| 131 // Take a snapshot of these values, so they will be commensurate with the MDO. | |
| 1783 | 132 if (ProfileInterpreter || TieredCompilation) { |
| 0 | 133 int invcnt = h_m()->interpreter_invocation_count(); |
| 134 // if the value overflowed report it as max int | |
| 135 _interpreter_invocation_count = invcnt < 0 ? max_jint : invcnt ; | |
| 136 _interpreter_throwout_count = h_m()->interpreter_throwout_count(); | |
| 137 } else { | |
| 138 _interpreter_invocation_count = 0; | |
| 139 _interpreter_throwout_count = 0; | |
| 140 } | |
| 141 if (_interpreter_invocation_count == 0) | |
| 142 _interpreter_invocation_count = 1; | |
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143 _instructions_size = -1; |
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144 #ifdef ASSERT |
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145 if (ReplayCompiles) { |
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146 ciReplay::initialize(this); |
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147 } |
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148 #endif |
| 0 | 149 } |
| 150 | |
| 151 | |
| 152 // ------------------------------------------------------------------ | |
| 153 // ciMethod::ciMethod | |
| 154 // | |
| 155 // Unloaded method. | |
| 156 ciMethod::ciMethod(ciInstanceKlass* holder, | |
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157 ciSymbol* name, |
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158 ciSymbol* signature, |
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159 ciInstanceKlass* accessor) : |
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160 ciMetadata((Metadata*)NULL), |
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161 _name( name), |
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162 _holder( holder), |
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163 _intrinsic_id( vmIntrinsics::_none), |
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164 _liveness( NULL), |
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165 _can_be_statically_bound(false), |
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166 _method_blocks( NULL), |
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167 _method_data( NULL) |
| 1692 | 168 #if defined(COMPILER2) || defined(SHARK) |
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169 , |
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170 _flow( NULL), |
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171 _bcea( NULL), |
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172 _instructions_size(-1) |
| 1692 | 173 #endif // COMPILER2 || SHARK |
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174 { |
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175 // Usually holder and accessor are the same type but in some cases |
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176 // the holder has the wrong class loader (e.g. invokedynamic call |
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177 // sites) so we pass the accessor. |
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178 _signature = new (CURRENT_ENV->arena()) ciSignature(accessor, constantPoolHandle(), signature); |
| 0 | 179 } |
| 180 | |
| 181 | |
| 182 // ------------------------------------------------------------------ | |
| 183 // ciMethod::load_code | |
| 184 // | |
| 185 // Load the bytecodes and exception handler table for this method. | |
| 186 void ciMethod::load_code() { | |
| 187 VM_ENTRY_MARK; | |
| 188 assert(is_loaded(), "only loaded methods have code"); | |
| 189 | |
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190 Method* me = get_Method(); |
| 0 | 191 Arena* arena = CURRENT_THREAD_ENV->arena(); |
| 192 | |
| 193 // Load the bytecodes. | |
| 194 _code = (address)arena->Amalloc(code_size()); | |
| 195 memcpy(_code, me->code_base(), code_size()); | |
| 196 | |
| 197 // Revert any breakpoint bytecodes in ci's copy | |
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198 if (me->number_of_breakpoints() > 0) { |
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199 BreakpointInfo* bp = me->method_holder()->breakpoints(); |
| 0 | 200 for (; bp != NULL; bp = bp->next()) { |
| 201 if (bp->match(me)) { | |
| 202 code_at_put(bp->bci(), bp->orig_bytecode()); | |
| 203 } | |
| 204 } | |
| 205 } | |
| 206 | |
| 207 // And load the exception table. | |
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208 ExceptionTable exc_table(me); |
| 0 | 209 |
| 210 // Allocate one extra spot in our list of exceptions. This | |
| 211 // last entry will be used to represent the possibility that | |
| 212 // an exception escapes the method. See ciExceptionHandlerStream | |
| 213 // for details. | |
| 214 _exception_handlers = | |
| 215 (ciExceptionHandler**)arena->Amalloc(sizeof(ciExceptionHandler*) | |
| 216 * (_handler_count + 1)); | |
| 217 if (_handler_count > 0) { | |
| 218 for (int i=0; i<_handler_count; i++) { | |
| 219 _exception_handlers[i] = new (arena) ciExceptionHandler( | |
| 220 holder(), | |
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221 /* start */ exc_table.start_pc(i), |
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222 /* limit */ exc_table.end_pc(i), |
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223 /* goto pc */ exc_table.handler_pc(i), |
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224 /* cp index */ exc_table.catch_type_index(i)); |
| 0 | 225 } |
| 226 } | |
| 227 | |
| 228 // Put an entry at the end of our list to represent the possibility | |
| 229 // of exceptional exit. | |
| 230 _exception_handlers[_handler_count] = | |
| 231 new (arena) ciExceptionHandler(holder(), 0, code_size(), -1, 0); | |
| 232 | |
| 233 if (CIPrintMethodCodes) { | |
| 234 print_codes(); | |
| 235 } | |
| 236 } | |
| 237 | |
| 238 | |
| 239 // ------------------------------------------------------------------ | |
| 240 // ciMethod::has_linenumber_table | |
| 241 // | |
| 242 // length unknown until decompression | |
| 243 bool ciMethod::has_linenumber_table() const { | |
| 244 check_is_loaded(); | |
| 245 VM_ENTRY_MARK; | |
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246 return get_Method()->has_linenumber_table(); |
| 0 | 247 } |
| 248 | |
| 249 | |
| 250 // ------------------------------------------------------------------ | |
| 251 // ciMethod::compressed_linenumber_table | |
| 252 u_char* ciMethod::compressed_linenumber_table() const { | |
| 253 check_is_loaded(); | |
| 254 VM_ENTRY_MARK; | |
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255 return get_Method()->compressed_linenumber_table(); |
| 0 | 256 } |
| 257 | |
| 258 | |
| 259 // ------------------------------------------------------------------ | |
| 260 // ciMethod::line_number_from_bci | |
| 261 int ciMethod::line_number_from_bci(int bci) const { | |
| 262 check_is_loaded(); | |
| 263 VM_ENTRY_MARK; | |
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264 return get_Method()->line_number_from_bci(bci); |
| 0 | 265 } |
| 266 | |
| 267 | |
| 268 // ------------------------------------------------------------------ | |
| 269 // ciMethod::vtable_index | |
| 270 // | |
| 271 // Get the position of this method's entry in the vtable, if any. | |
| 272 int ciMethod::vtable_index() { | |
| 273 check_is_loaded(); | |
| 274 assert(holder()->is_linked(), "must be linked"); | |
| 275 VM_ENTRY_MARK; | |
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276 return get_Method()->vtable_index(); |
| 0 | 277 } |
| 278 | |
| 279 | |
| 1692 | 280 #ifdef SHARK |
| 281 // ------------------------------------------------------------------ | |
| 282 // ciMethod::itable_index | |
| 283 // | |
| 284 // Get the position of this method's entry in the itable, if any. | |
| 285 int ciMethod::itable_index() { | |
| 286 check_is_loaded(); | |
| 287 assert(holder()->is_linked(), "must be linked"); | |
| 288 VM_ENTRY_MARK; | |
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289 Method* m = get_Method(); |
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290 if (!m->has_itable_index()) |
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291 return Method::nonvirtual_vtable_index; |
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292 return m->itable_index(); |
| 1692 | 293 } |
| 294 #endif // SHARK | |
| 295 | |
| 296 | |
| 0 | 297 // ------------------------------------------------------------------ |
| 298 // ciMethod::native_entry | |
| 299 // | |
| 300 // Get the address of this method's native code, if any. | |
| 301 address ciMethod::native_entry() { | |
| 302 check_is_loaded(); | |
| 303 assert(flags().is_native(), "must be native method"); | |
| 304 VM_ENTRY_MARK; | |
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305 Method* method = get_Method(); |
| 0 | 306 address entry = method->native_function(); |
| 307 assert(entry != NULL, "must be valid entry point"); | |
| 308 return entry; | |
| 309 } | |
| 310 | |
| 311 | |
| 312 // ------------------------------------------------------------------ | |
| 313 // ciMethod::interpreter_entry | |
| 314 // | |
| 315 // Get the entry point for running this method in the interpreter. | |
| 316 address ciMethod::interpreter_entry() { | |
| 317 check_is_loaded(); | |
| 318 VM_ENTRY_MARK; | |
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319 methodHandle mh(THREAD, get_Method()); |
| 0 | 320 return Interpreter::entry_for_method(mh); |
| 321 } | |
| 322 | |
| 323 | |
| 324 // ------------------------------------------------------------------ | |
| 325 // ciMethod::uses_balanced_monitors | |
| 326 // | |
| 327 // Does this method use monitors in a strict stack-disciplined manner? | |
| 328 bool ciMethod::has_balanced_monitors() { | |
| 329 check_is_loaded(); | |
| 330 if (_balanced_monitors) return true; | |
| 331 | |
| 332 // Analyze the method to see if monitors are used properly. | |
| 333 VM_ENTRY_MARK; | |
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334 methodHandle method(THREAD, get_Method()); |
| 0 | 335 assert(method->has_monitor_bytecodes(), "should have checked this"); |
| 336 | |
| 337 // Check to see if a previous compilation computed the | |
| 338 // monitor-matching analysis. | |
| 339 if (method->guaranteed_monitor_matching()) { | |
| 340 _balanced_monitors = true; | |
| 341 return true; | |
| 342 } | |
| 343 | |
| 344 { | |
| 345 EXCEPTION_MARK; | |
| 346 ResourceMark rm(THREAD); | |
| 347 GeneratePairingInfo gpi(method); | |
| 348 gpi.compute_map(CATCH); | |
| 349 if (!gpi.monitor_safe()) { | |
| 350 return false; | |
| 351 } | |
| 352 method->set_guaranteed_monitor_matching(); | |
| 353 _balanced_monitors = true; | |
| 354 } | |
| 355 return true; | |
| 356 } | |
| 357 | |
| 358 | |
| 359 // ------------------------------------------------------------------ | |
| 360 // ciMethod::get_flow_analysis | |
| 361 ciTypeFlow* ciMethod::get_flow_analysis() { | |
| 1692 | 362 #if defined(COMPILER2) || defined(SHARK) |
| 0 | 363 if (_flow == NULL) { |
| 364 ciEnv* env = CURRENT_ENV; | |
| 365 _flow = new (env->arena()) ciTypeFlow(env, this); | |
| 366 _flow->do_flow(); | |
| 367 } | |
| 368 return _flow; | |
| 1692 | 369 #else // COMPILER2 || SHARK |
| 0 | 370 ShouldNotReachHere(); |
| 371 return NULL; | |
| 1692 | 372 #endif // COMPILER2 || SHARK |
| 0 | 373 } |
| 374 | |
| 375 | |
| 376 // ------------------------------------------------------------------ | |
| 377 // ciMethod::get_osr_flow_analysis | |
| 378 ciTypeFlow* ciMethod::get_osr_flow_analysis(int osr_bci) { | |
| 1692 | 379 #if defined(COMPILER2) || defined(SHARK) |
| 0 | 380 // OSR entry points are always place after a call bytecode of some sort |
| 381 assert(osr_bci >= 0, "must supply valid OSR entry point"); | |
| 382 ciEnv* env = CURRENT_ENV; | |
| 383 ciTypeFlow* flow = new (env->arena()) ciTypeFlow(env, this, osr_bci); | |
| 384 flow->do_flow(); | |
| 385 return flow; | |
| 1692 | 386 #else // COMPILER2 || SHARK |
| 0 | 387 ShouldNotReachHere(); |
| 388 return NULL; | |
| 1692 | 389 #endif // COMPILER2 || SHARK |
| 0 | 390 } |
| 391 | |
| 392 // ------------------------------------------------------------------ | |
| 991 | 393 // ciMethod::raw_liveness_at_bci |
| 0 | 394 // |
| 395 // Which local variables are live at a specific bci? | |
| 991 | 396 MethodLivenessResult ciMethod::raw_liveness_at_bci(int bci) { |
| 0 | 397 check_is_loaded(); |
| 398 if (_liveness == NULL) { | |
| 399 // Create the liveness analyzer. | |
| 400 Arena* arena = CURRENT_ENV->arena(); | |
| 401 _liveness = new (arena) MethodLiveness(arena, this); | |
| 402 _liveness->compute_liveness(); | |
| 403 } | |
| 991 | 404 return _liveness->get_liveness_at(bci); |
| 405 } | |
| 406 | |
| 407 // ------------------------------------------------------------------ | |
| 408 // ciMethod::liveness_at_bci | |
| 409 // | |
| 410 // Which local variables are live at a specific bci? When debugging | |
| 411 // will return true for all locals in some cases to improve debug | |
| 412 // information. | |
| 413 MethodLivenessResult ciMethod::liveness_at_bci(int bci) { | |
| 414 MethodLivenessResult result = raw_liveness_at_bci(bci); | |
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415 if (CURRENT_ENV->jvmti_can_access_local_variables() || DeoptimizeALot || CompileTheWorld) { |
| 0 | 416 // Keep all locals live for the user's edification and amusement. |
| 417 result.at_put_range(0, result.size(), true); | |
| 418 } | |
| 419 return result; | |
| 420 } | |
| 421 | |
| 422 // ciMethod::live_local_oops_at_bci | |
| 423 // | |
| 424 // find all the live oops in the locals array for a particular bci | |
| 425 // Compute what the interpreter believes by using the interpreter | |
| 426 // oopmap generator. This is used as a double check during osr to | |
| 427 // guard against conservative result from MethodLiveness making us | |
| 428 // think a dead oop is live. MethodLiveness is conservative in the | |
| 429 // sense that it may consider locals to be live which cannot be live, | |
| 430 // like in the case where a local could contain an oop or a primitive | |
| 431 // along different paths. In that case the local must be dead when | |
| 432 // those paths merge. Since the interpreter's viewpoint is used when | |
| 433 // gc'ing an interpreter frame we need to use its viewpoint during | |
| 434 // OSR when loading the locals. | |
| 435 | |
| 436 BitMap ciMethod::live_local_oops_at_bci(int bci) { | |
| 437 VM_ENTRY_MARK; | |
| 438 InterpreterOopMap mask; | |
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439 OopMapCache::compute_one_oop_map(get_Method(), bci, &mask); |
| 0 | 440 int mask_size = max_locals(); |
| 441 BitMap result(mask_size); | |
| 442 result.clear(); | |
| 443 int i; | |
| 444 for (i = 0; i < mask_size ; i++ ) { | |
| 445 if (mask.is_oop(i)) result.set_bit(i); | |
| 446 } | |
| 447 return result; | |
| 448 } | |
| 449 | |
| 450 | |
| 451 #ifdef COMPILER1 | |
| 452 // ------------------------------------------------------------------ | |
| 453 // ciMethod::bci_block_start | |
| 454 // | |
| 455 // Marks all bcis where a new basic block starts | |
| 456 const BitMap ciMethod::bci_block_start() { | |
| 457 check_is_loaded(); | |
| 458 if (_liveness == NULL) { | |
| 459 // Create the liveness analyzer. | |
| 460 Arena* arena = CURRENT_ENV->arena(); | |
| 461 _liveness = new (arena) MethodLiveness(arena, this); | |
| 462 _liveness->compute_liveness(); | |
| 463 } | |
| 464 | |
| 465 return _liveness->get_bci_block_start(); | |
| 466 } | |
| 467 #endif // COMPILER1 | |
| 468 | |
| 469 | |
| 470 // ------------------------------------------------------------------ | |
| 471 // ciMethod::call_profile_at_bci | |
| 472 // | |
| 473 // Get the ciCallProfile for the invocation of this method. | |
| 474 // Also reports receiver types for non-call type checks (if TypeProfileCasts). | |
| 475 ciCallProfile ciMethod::call_profile_at_bci(int bci) { | |
| 476 ResourceMark rm; | |
| 477 ciCallProfile result; | |
| 478 if (method_data() != NULL && method_data()->is_mature()) { | |
| 479 ciProfileData* data = method_data()->bci_to_data(bci); | |
| 480 if (data != NULL && data->is_CounterData()) { | |
| 481 // Every profiled call site has a counter. | |
| 482 int count = data->as_CounterData()->count(); | |
| 483 | |
| 484 if (!data->is_ReceiverTypeData()) { | |
| 485 result._receiver_count[0] = 0; // that's a definite zero | |
| 486 } else { // ReceiverTypeData is a subclass of CounterData | |
| 487 ciReceiverTypeData* call = (ciReceiverTypeData*)data->as_ReceiverTypeData(); | |
| 488 // In addition, virtual call sites have receiver type information | |
| 489 int receivers_count_total = 0; | |
| 490 int morphism = 0; | |
| 1783 | 491 // Precompute morphism for the possible fixup |
| 0 | 492 for (uint i = 0; i < call->row_limit(); i++) { |
| 493 ciKlass* receiver = call->receiver(i); | |
| 494 if (receiver == NULL) continue; | |
| 1783 | 495 morphism++; |
| 496 } | |
| 497 int epsilon = 0; | |
| 498 if (TieredCompilation && ProfileInterpreter) { | |
| 499 // Interpreter and C1 treat final and special invokes differently. | |
| 500 // C1 will record a type, whereas the interpreter will just | |
| 501 // increment the count. Detect this case. | |
| 502 if (morphism == 1 && count > 0) { | |
| 503 epsilon = count; | |
| 504 count = 0; | |
| 505 } | |
| 506 } | |
| 507 for (uint i = 0; i < call->row_limit(); i++) { | |
| 508 ciKlass* receiver = call->receiver(i); | |
| 509 if (receiver == NULL) continue; | |
| 510 int rcount = call->receiver_count(i) + epsilon; | |
| 0 | 511 if (rcount == 0) rcount = 1; // Should be valid value |
| 512 receivers_count_total += rcount; | |
| 513 // Add the receiver to result data. | |
| 514 result.add_receiver(receiver, rcount); | |
| 515 // If we extend profiling to record methods, | |
| 516 // we will set result._method also. | |
| 517 } | |
| 518 // Determine call site's morphism. | |
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519 // The call site count is 0 with known morphism (onlt 1 or 2 receivers) |
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520 // or < 0 in the case of a type check failured for checkcast, aastore, instanceof. |
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521 // The call site count is > 0 in the case of a polymorphic virtual call. |
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522 if (morphism > 0 && morphism == result._limit) { |
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523 // The morphism <= MorphismLimit. |
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524 if ((morphism < ciCallProfile::MorphismLimit) || |
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525 (morphism == ciCallProfile::MorphismLimit && count == 0)) { |
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526 #ifdef ASSERT |
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527 if (count > 0) { |
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528 this->print_short_name(tty); |
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529 tty->print_cr(" @ bci:%d", bci); |
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530 this->print_codes(); |
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531 assert(false, "this call site should not be polymorphic"); |
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532 } |
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533 #endif |
| 0 | 534 result._morphism = morphism; |
| 535 } | |
| 536 } | |
| 537 // Make the count consistent if this is a call profile. If count is | |
| 538 // zero or less, presume that this is a typecheck profile and | |
| 539 // do nothing. Otherwise, increase count to be the sum of all | |
| 540 // receiver's counts. | |
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541 if (count >= 0) { |
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542 count += receivers_count_total; |
| 0 | 543 } |
| 544 } | |
| 545 result._count = count; | |
| 546 } | |
| 547 } | |
| 548 return result; | |
| 549 } | |
| 550 | |
| 551 // ------------------------------------------------------------------ | |
| 552 // Add new receiver and sort data by receiver's profile count. | |
| 553 void ciCallProfile::add_receiver(ciKlass* receiver, int receiver_count) { | |
| 554 // Add new receiver and sort data by receiver's counts when we have space | |
| 555 // for it otherwise replace the less called receiver (less called receiver | |
| 556 // is placed to the last array element which is not used). | |
| 557 // First array's element contains most called receiver. | |
| 558 int i = _limit; | |
| 559 for (; i > 0 && receiver_count > _receiver_count[i-1]; i--) { | |
| 560 _receiver[i] = _receiver[i-1]; | |
| 561 _receiver_count[i] = _receiver_count[i-1]; | |
| 562 } | |
| 563 _receiver[i] = receiver; | |
| 564 _receiver_count[i] = receiver_count; | |
| 565 if (_limit < MorphismLimit) _limit++; | |
| 566 } | |
| 567 | |
| 568 // ------------------------------------------------------------------ | |
| 569 // ciMethod::find_monomorphic_target | |
| 570 // | |
| 571 // Given a certain calling environment, find the monomorphic target | |
| 572 // for the call. Return NULL if the call is not monomorphic in | |
| 573 // its calling environment, or if there are only abstract methods. | |
| 574 // The returned method is never abstract. | |
| 575 // Note: If caller uses a non-null result, it must inform dependencies | |
| 576 // via assert_unique_concrete_method or assert_leaf_type. | |
| 577 ciMethod* ciMethod::find_monomorphic_target(ciInstanceKlass* caller, | |
| 578 ciInstanceKlass* callee_holder, | |
| 579 ciInstanceKlass* actual_recv) { | |
| 580 check_is_loaded(); | |
| 581 | |
| 582 if (actual_recv->is_interface()) { | |
| 583 // %%% We cannot trust interface types, yet. See bug 6312651. | |
| 584 return NULL; | |
| 585 } | |
| 586 | |
| 587 ciMethod* root_m = resolve_invoke(caller, actual_recv); | |
| 588 if (root_m == NULL) { | |
| 589 // Something went wrong looking up the actual receiver method. | |
| 590 return NULL; | |
| 591 } | |
| 592 assert(!root_m->is_abstract(), "resolve_invoke promise"); | |
| 593 | |
| 594 // Make certain quick checks even if UseCHA is false. | |
| 595 | |
| 596 // Is it private or final? | |
| 597 if (root_m->can_be_statically_bound()) { | |
| 598 return root_m; | |
| 599 } | |
| 600 | |
| 601 if (actual_recv->is_leaf_type() && actual_recv == root_m->holder()) { | |
| 602 // Easy case. There is no other place to put a method, so don't bother | |
| 603 // to go through the VM_ENTRY_MARK and all the rest. | |
| 604 return root_m; | |
| 605 } | |
| 606 | |
| 607 // Array methods (clone, hashCode, etc.) are always statically bound. | |
| 608 // If we were to see an array type here, we'd return root_m. | |
| 609 // However, this method processes only ciInstanceKlasses. (See 4962591.) | |
| 610 // The inline_native_clone intrinsic narrows Object to T[] properly, | |
| 611 // so there is no need to do the same job here. | |
| 612 | |
| 613 if (!UseCHA) return NULL; | |
| 614 | |
| 615 VM_ENTRY_MARK; | |
| 616 | |
| 617 methodHandle target; | |
| 618 { | |
| 619 MutexLocker locker(Compile_lock); | |
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620 Klass* context = actual_recv->get_Klass(); |
| 0 | 621 target = Dependencies::find_unique_concrete_method(context, |
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622 root_m->get_Method()); |
| 0 | 623 // %%% Should upgrade this ciMethod API to look for 1 or 2 concrete methods. |
| 624 } | |
| 625 | |
| 626 #ifndef PRODUCT | |
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627 if (TraceDependencies && target() != NULL && target() != root_m->get_Method()) { |
| 0 | 628 tty->print("found a non-root unique target method"); |
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629 tty->print_cr(" context = %s", InstanceKlass::cast(actual_recv->get_Klass())->external_name()); |
| 0 | 630 tty->print(" method = "); |
| 631 target->print_short_name(tty); | |
| 632 tty->cr(); | |
| 633 } | |
| 634 #endif //PRODUCT | |
| 635 | |
| 636 if (target() == NULL) { | |
| 637 return NULL; | |
| 638 } | |
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639 if (target() == root_m->get_Method()) { |
| 0 | 640 return root_m; |
| 641 } | |
| 642 if (!root_m->is_public() && | |
| 643 !root_m->is_protected()) { | |
| 644 // If we are going to reason about inheritance, it's easiest | |
| 645 // if the method in question is public, protected, or private. | |
| 646 // If the answer is not root_m, it is conservatively correct | |
| 647 // to return NULL, even if the CHA encountered irrelevant | |
| 648 // methods in other packages. | |
| 649 // %%% TO DO: Work out logic for package-private methods | |
| 650 // with the same name but different vtable indexes. | |
| 651 return NULL; | |
| 652 } | |
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653 return CURRENT_THREAD_ENV->get_method(target()); |
| 0 | 654 } |
| 655 | |
| 656 // ------------------------------------------------------------------ | |
| 657 // ciMethod::resolve_invoke | |
| 658 // | |
| 659 // Given a known receiver klass, find the target for the call. | |
| 660 // Return NULL if the call has no target or the target is abstract. | |
| 661 ciMethod* ciMethod::resolve_invoke(ciKlass* caller, ciKlass* exact_receiver) { | |
| 662 check_is_loaded(); | |
| 663 VM_ENTRY_MARK; | |
| 664 | |
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665 KlassHandle caller_klass (THREAD, caller->get_Klass()); |
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666 KlassHandle h_recv (THREAD, exact_receiver->get_Klass()); |
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667 KlassHandle h_resolved (THREAD, holder()->get_Klass()); |
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668 Symbol* h_name = name()->get_symbol(); |
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669 Symbol* h_signature = signature()->get_symbol(); |
| 0 | 670 |
| 671 methodHandle m; | |
| 672 // Only do exact lookup if receiver klass has been linked. Otherwise, | |
| 673 // the vtable has not been setup, and the LinkResolver will fail. | |
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674 if (h_recv->oop_is_array() |
| 0 | 675 || |
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676 InstanceKlass::cast(h_recv())->is_linked() && !exact_receiver->is_interface()) { |
| 0 | 677 if (holder()->is_interface()) { |
| 678 m = LinkResolver::resolve_interface_call_or_null(h_recv, h_resolved, h_name, h_signature, caller_klass); | |
| 679 } else { | |
| 680 m = LinkResolver::resolve_virtual_call_or_null(h_recv, h_resolved, h_name, h_signature, caller_klass); | |
| 681 } | |
| 682 } | |
| 683 | |
| 684 if (m.is_null()) { | |
| 685 // Return NULL only if there was a problem with lookup (uninitialized class, etc.) | |
| 686 return NULL; | |
| 687 } | |
| 688 | |
| 689 ciMethod* result = this; | |
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690 if (m() != get_Method()) { |
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691 result = CURRENT_THREAD_ENV->get_method(m()); |
| 0 | 692 } |
| 693 | |
| 694 // Don't return abstract methods because they aren't | |
| 695 // optimizable or interesting. | |
| 696 if (result->is_abstract()) { | |
| 697 return NULL; | |
| 698 } else { | |
| 699 return result; | |
| 700 } | |
| 701 } | |
| 702 | |
| 703 // ------------------------------------------------------------------ | |
| 704 // ciMethod::resolve_vtable_index | |
| 705 // | |
| 706 // Given a known receiver klass, find the vtable index for the call. | |
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707 // Return Method::invalid_vtable_index if the vtable_index is unknown. |
| 0 | 708 int ciMethod::resolve_vtable_index(ciKlass* caller, ciKlass* receiver) { |
| 709 check_is_loaded(); | |
| 710 | |
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711 int vtable_index = Method::invalid_vtable_index; |
| 0 | 712 // Only do lookup if receiver klass has been linked. Otherwise, |
| 713 // the vtable has not been setup, and the LinkResolver will fail. | |
| 714 if (!receiver->is_interface() | |
| 715 && (!receiver->is_instance_klass() || | |
| 716 receiver->as_instance_klass()->is_linked())) { | |
| 717 VM_ENTRY_MARK; | |
| 718 | |
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719 KlassHandle caller_klass (THREAD, caller->get_Klass()); |
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720 KlassHandle h_recv (THREAD, receiver->get_Klass()); |
|
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721 Symbol* h_name = name()->get_symbol(); |
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722 Symbol* h_signature = signature()->get_symbol(); |
| 0 | 723 |
| 724 vtable_index = LinkResolver::resolve_virtual_vtable_index(h_recv, h_recv, h_name, h_signature, caller_klass); | |
|
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725 if (vtable_index == Method::nonvirtual_vtable_index) { |
| 0 | 726 // A statically bound method. Return "no such index". |
|
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727 vtable_index = Method::invalid_vtable_index; |
| 0 | 728 } |
| 729 } | |
| 730 | |
| 731 return vtable_index; | |
| 732 } | |
| 733 | |
| 734 // ------------------------------------------------------------------ | |
| 735 // ciMethod::interpreter_call_site_count | |
| 736 int ciMethod::interpreter_call_site_count(int bci) { | |
| 737 if (method_data() != NULL) { | |
| 738 ResourceMark rm; | |
| 739 ciProfileData* data = method_data()->bci_to_data(bci); | |
| 740 if (data != NULL && data->is_CounterData()) { | |
| 741 return scale_count(data->as_CounterData()->count()); | |
| 742 } | |
| 743 } | |
| 744 return -1; // unknown | |
| 745 } | |
| 746 | |
| 747 // ------------------------------------------------------------------ | |
|
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748 // ciMethod::get_field_at_bci |
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749 ciField* ciMethod::get_field_at_bci(int bci, bool &will_link) { |
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750 ciBytecodeStream iter(this); |
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751 iter.reset_to_bci(bci); |
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752 iter.next(); |
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753 return iter.get_field(will_link); |
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754 } |
|
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755 |
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756 // ------------------------------------------------------------------ |
|
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757 // ciMethod::get_method_at_bci |
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758 ciMethod* ciMethod::get_method_at_bci(int bci, bool &will_link, ciSignature* *declared_signature) { |
|
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759 ciBytecodeStream iter(this); |
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760 iter.reset_to_bci(bci); |
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761 iter.next(); |
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762 return iter.get_method(will_link, declared_signature); |
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763 } |
|
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764 |
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765 // ------------------------------------------------------------------ |
| 0 | 766 // Adjust a CounterData count to be commensurate with |
| 767 // interpreter_invocation_count. If the MDO exists for | |
| 768 // only 25% of the time the method exists, then the | |
| 769 // counts in the MDO should be scaled by 4X, so that | |
| 770 // they can be usefully and stably compared against the | |
| 771 // invocation counts in methods. | |
| 772 int ciMethod::scale_count(int count, float prof_factor) { | |
| 773 if (count > 0 && method_data() != NULL) { | |
| 1783 | 774 int counter_life; |
| 0 | 775 int method_life = interpreter_invocation_count(); |
| 1783 | 776 if (TieredCompilation) { |
| 777 // In tiered the MDO's life is measured directly, so just use the snapshotted counters | |
| 778 counter_life = MAX2(method_data()->invocation_count(), method_data()->backedge_count()); | |
| 779 } else { | |
| 780 int current_mileage = method_data()->current_mileage(); | |
| 781 int creation_mileage = method_data()->creation_mileage(); | |
| 782 counter_life = current_mileage - creation_mileage; | |
| 783 } | |
| 784 | |
| 0 | 785 // counter_life due to backedge_counter could be > method_life |
| 786 if (counter_life > method_life) | |
| 787 counter_life = method_life; | |
| 788 if (0 < counter_life && counter_life <= method_life) { | |
| 789 count = (int)((double)count * prof_factor * method_life / counter_life + 0.5); | |
| 790 count = (count > 0) ? count : 1; | |
| 791 } | |
| 792 } | |
| 793 return count; | |
| 794 } | |
| 795 | |
|
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796 |
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797 // ------------------------------------------------------------------ |
|
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798 // ciMethod::is_special_get_caller_class_method |
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799 // |
|
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800 bool ciMethod::is_ignored_by_security_stack_walk() const { |
|
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801 check_is_loaded(); |
|
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|
802 VM_ENTRY_MARK; |
|
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803 return get_Method()->is_ignored_by_security_stack_walk(); |
|
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|
804 } |
|
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|
805 |
|
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|
806 |
| 0 | 807 // ------------------------------------------------------------------ |
| 710 | 808 // invokedynamic support |
| 1564 | 809 |
| 810 // ------------------------------------------------------------------ | |
|
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811 // ciMethod::is_method_handle_intrinsic |
| 710 | 812 // |
|
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813 // Return true if the method is an instance of the JVM-generated |
|
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814 // signature-polymorphic MethodHandle methods, _invokeBasic, _linkToVirtual, etc. |
|
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815 bool ciMethod::is_method_handle_intrinsic() const { |
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816 vmIntrinsics::ID iid = _intrinsic_id; // do not check if loaded |
|
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817 return (MethodHandles::is_signature_polymorphic(iid) && |
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818 MethodHandles::is_signature_polymorphic_intrinsic(iid)); |
| 710 | 819 } |
| 820 | |
| 1564 | 821 // ------------------------------------------------------------------ |
|
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822 // ciMethod::is_compiled_lambda_form |
| 1564 | 823 // |
| 824 // Return true if the method is a generated MethodHandle adapter. | |
|
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825 // These are built by Java code. |
|
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826 bool ciMethod::is_compiled_lambda_form() const { |
|
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827 vmIntrinsics::ID iid = _intrinsic_id; // do not check if loaded |
|
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828 return iid == vmIntrinsics::_compiledLambdaForm; |
|
1152
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|
829 } |
|
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|
830 |
|
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831 // ------------------------------------------------------------------ |
|
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832 // ciMethod::has_member_arg |
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|
833 // |
|
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834 // Return true if the method is a linker intrinsic like _linkToVirtual. |
|
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835 // These are built by the JVM. |
|
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836 bool ciMethod::has_member_arg() const { |
|
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837 vmIntrinsics::ID iid = _intrinsic_id; // do not check if loaded |
|
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838 return (MethodHandles::is_signature_polymorphic(iid) && |
|
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|
839 MethodHandles::has_member_arg(iid)); |
| 710 | 840 } |
| 841 | |
| 842 // ------------------------------------------------------------------ | |
|
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|
843 // ciMethod::ensure_method_data |
| 0 | 844 // |
|
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845 // Generate new MethodData* objects at compile time. |
|
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|
846 // Return true if allocation was successful or no MDO is required. |
|
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|
847 bool ciMethod::ensure_method_data(methodHandle h_m) { |
| 0 | 848 EXCEPTION_CONTEXT; |
|
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|
849 if (is_native() || is_abstract() || h_m()->is_accessor()) return true; |
| 0 | 850 if (h_m()->method_data() == NULL) { |
|
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|
851 Method::build_interpreter_method_data(h_m, THREAD); |
| 0 | 852 if (HAS_PENDING_EXCEPTION) { |
| 853 CLEAR_PENDING_EXCEPTION; | |
| 854 } | |
| 855 } | |
| 856 if (h_m()->method_data() != NULL) { | |
|
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857 _method_data = CURRENT_ENV->get_method_data(h_m()->method_data()); |
| 0 | 858 _method_data->load_data(); |
|
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|
859 return true; |
| 0 | 860 } else { |
| 861 _method_data = CURRENT_ENV->get_empty_methodData(); | |
|
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|
862 return false; |
| 0 | 863 } |
| 864 } | |
| 865 | |
| 866 // public, retroactive version | |
|
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|
867 bool ciMethod::ensure_method_data() { |
|
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|
868 bool result = true; |
| 0 | 869 if (_method_data == NULL || _method_data->is_empty()) { |
| 870 GUARDED_VM_ENTRY({ | |
|
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871 result = ensure_method_data(get_Method()); |
| 0 | 872 }); |
| 873 } | |
|
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|
874 return result; |
| 0 | 875 } |
| 876 | |
| 877 | |
| 878 // ------------------------------------------------------------------ | |
| 879 // ciMethod::method_data | |
| 880 // | |
| 881 ciMethodData* ciMethod::method_data() { | |
| 882 if (_method_data != NULL) { | |
| 883 return _method_data; | |
| 884 } | |
| 885 VM_ENTRY_MARK; | |
| 886 ciEnv* env = CURRENT_ENV; | |
| 887 Thread* my_thread = JavaThread::current(); | |
|
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|
888 methodHandle h_m(my_thread, get_Method()); |
| 0 | 889 |
| 890 if (h_m()->method_data() != NULL) { | |
|
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|
891 _method_data = CURRENT_ENV->get_method_data(h_m()->method_data()); |
| 0 | 892 _method_data->load_data(); |
| 893 } else { | |
| 894 _method_data = CURRENT_ENV->get_empty_methodData(); | |
| 895 } | |
| 896 return _method_data; | |
| 897 | |
| 898 } | |
| 899 | |
|
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|
900 // ------------------------------------------------------------------ |
|
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|
901 // ciMethod::method_data_or_null |
|
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|
902 // Returns a pointer to ciMethodData if MDO exists on the VM side, |
|
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|
903 // NULL otherwise. |
|
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|
904 ciMethodData* ciMethod::method_data_or_null() { |
|
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|
905 ciMethodData *md = method_data(); |
|
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|
906 if (md->is_empty()) return NULL; |
|
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|
907 return md; |
|
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|
908 } |
| 0 | 909 |
| 910 // ------------------------------------------------------------------ | |
|
10105
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911 // ciMethod::ensure_method_counters |
|
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|
912 // |
|
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|
913 address ciMethod::ensure_method_counters() { |
|
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|
914 check_is_loaded(); |
|
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|
915 VM_ENTRY_MARK; |
|
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|
916 methodHandle mh(THREAD, get_Method()); |
|
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|
917 MethodCounters *counter = mh->method_counters(); |
|
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|
918 if (counter == NULL) { |
|
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|
919 counter = Method::build_method_counters(mh(), CHECK_AND_CLEAR_NULL); |
|
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920 } |
|
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921 return (address)counter; |
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922 } |
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923 |
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924 // ------------------------------------------------------------------ |
| 0 | 925 // ciMethod::should_exclude |
| 926 // | |
| 927 // Should this method be excluded from compilation? | |
| 928 bool ciMethod::should_exclude() { | |
| 929 check_is_loaded(); | |
| 930 VM_ENTRY_MARK; | |
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931 methodHandle mh(THREAD, get_Method()); |
| 0 | 932 bool ignore; |
| 933 return CompilerOracle::should_exclude(mh, ignore); | |
| 934 } | |
| 935 | |
| 936 // ------------------------------------------------------------------ | |
| 937 // ciMethod::should_inline | |
| 938 // | |
| 939 // Should this method be inlined during compilation? | |
| 940 bool ciMethod::should_inline() { | |
| 941 check_is_loaded(); | |
| 942 VM_ENTRY_MARK; | |
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943 methodHandle mh(THREAD, get_Method()); |
| 0 | 944 return CompilerOracle::should_inline(mh); |
| 945 } | |
| 946 | |
| 947 // ------------------------------------------------------------------ | |
| 948 // ciMethod::should_not_inline | |
| 949 // | |
| 950 // Should this method be disallowed from inlining during compilation? | |
| 951 bool ciMethod::should_not_inline() { | |
| 952 check_is_loaded(); | |
| 953 VM_ENTRY_MARK; | |
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954 methodHandle mh(THREAD, get_Method()); |
| 0 | 955 return CompilerOracle::should_not_inline(mh); |
| 956 } | |
| 957 | |
| 958 // ------------------------------------------------------------------ | |
| 959 // ciMethod::should_print_assembly | |
| 960 // | |
| 961 // Should the compiler print the generated code for this method? | |
| 962 bool ciMethod::should_print_assembly() { | |
| 963 check_is_loaded(); | |
| 964 VM_ENTRY_MARK; | |
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965 methodHandle mh(THREAD, get_Method()); |
| 0 | 966 return CompilerOracle::should_print(mh); |
| 967 } | |
| 968 | |
| 969 // ------------------------------------------------------------------ | |
| 970 // ciMethod::break_at_execute | |
| 971 // | |
| 972 // Should the compiler insert a breakpoint into the generated code | |
| 973 // method? | |
| 974 bool ciMethod::break_at_execute() { | |
| 975 check_is_loaded(); | |
| 976 VM_ENTRY_MARK; | |
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977 methodHandle mh(THREAD, get_Method()); |
| 0 | 978 return CompilerOracle::should_break_at(mh); |
| 979 } | |
| 980 | |
| 981 // ------------------------------------------------------------------ | |
| 982 // ciMethod::has_option | |
| 983 // | |
| 984 bool ciMethod::has_option(const char* option) { | |
| 985 check_is_loaded(); | |
| 986 VM_ENTRY_MARK; | |
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987 methodHandle mh(THREAD, get_Method()); |
| 0 | 988 return CompilerOracle::has_option_string(mh, option); |
| 989 } | |
| 990 | |
| 991 // ------------------------------------------------------------------ | |
| 992 // ciMethod::can_be_compiled | |
| 993 // | |
| 994 // Have previous compilations of this method succeeded? | |
| 995 bool ciMethod::can_be_compiled() { | |
| 996 check_is_loaded(); | |
| 1783 | 997 ciEnv* env = CURRENT_ENV; |
| 998 if (is_c1_compile(env->comp_level())) { | |
| 999 return _is_c1_compilable; | |
| 1000 } | |
| 1001 return _is_c2_compilable; | |
| 0 | 1002 } |
| 1003 | |
| 1004 // ------------------------------------------------------------------ | |
| 1005 // ciMethod::set_not_compilable | |
| 1006 // | |
| 1007 // Tell the VM that this method cannot be compiled at all. | |
| 7998 | 1008 void ciMethod::set_not_compilable(const char* reason) { |
| 0 | 1009 check_is_loaded(); |
| 1010 VM_ENTRY_MARK; | |
| 1783 | 1011 ciEnv* env = CURRENT_ENV; |
| 1012 if (is_c1_compile(env->comp_level())) { | |
| 1013 _is_c1_compilable = false; | |
| 1014 } else { | |
| 1015 _is_c2_compilable = false; | |
| 1016 } | |
| 7998 | 1017 get_Method()->set_not_compilable(env->comp_level(), true, reason); |
| 0 | 1018 } |
| 1019 | |
| 1020 // ------------------------------------------------------------------ | |
| 1021 // ciMethod::can_be_osr_compiled | |
| 1022 // | |
| 1023 // Have previous compilations of this method succeeded? | |
| 1024 // | |
| 1025 // Implementation note: the VM does not currently keep track | |
| 1026 // of failed OSR compilations per bci. The entry_bci parameter | |
| 1027 // is currently unused. | |
| 1028 bool ciMethod::can_be_osr_compiled(int entry_bci) { | |
| 1029 check_is_loaded(); | |
| 1030 VM_ENTRY_MARK; | |
| 1783 | 1031 ciEnv* env = CURRENT_ENV; |
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1032 return !get_Method()->is_not_osr_compilable(env->comp_level()); |
| 0 | 1033 } |
| 1034 | |
| 1035 // ------------------------------------------------------------------ | |
| 1036 // ciMethod::has_compiled_code | |
| 1037 bool ciMethod::has_compiled_code() { | |
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1038 return instructions_size() > 0; |
| 0 | 1039 } |
| 1040 | |
| 1783 | 1041 int ciMethod::comp_level() { |
| 1042 check_is_loaded(); | |
| 1043 VM_ENTRY_MARK; | |
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1044 nmethod* nm = get_Method()->code(); |
| 1783 | 1045 if (nm != NULL) return nm->comp_level(); |
| 1046 return 0; | |
| 1047 } | |
| 1048 | |
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1049 int ciMethod::highest_osr_comp_level() { |
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1050 check_is_loaded(); |
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1051 VM_ENTRY_MARK; |
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1052 return get_Method()->highest_osr_comp_level(); |
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1053 } |
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1054 |
| 0 | 1055 // ------------------------------------------------------------------ |
|
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1056 // ciMethod::code_size_for_inlining |
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1057 // |
|
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1058 // Code size for inlining decisions. This method returns a code |
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1059 // size of 1 for methods which has the ForceInline annotation. |
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1060 int ciMethod::code_size_for_inlining() { |
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1061 check_is_loaded(); |
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1062 if (get_Method()->force_inline()) { |
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1063 return 1; |
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1064 } |
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1065 return code_size(); |
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1066 } |
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1067 |
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1068 // ------------------------------------------------------------------ |
| 0 | 1069 // ciMethod::instructions_size |
| 1748 | 1070 // |
| 1071 // This is a rough metric for "fat" methods, compared before inlining | |
| 1072 // with InlineSmallCode. The CodeBlob::code_size accessor includes | |
| 1073 // junk like exception handler, stubs, and constant table, which are | |
| 1074 // not highly relevant to an inlined method. So we use the more | |
| 1075 // specific accessor nmethod::insts_size. | |
|
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1076 int ciMethod::instructions_size() { |
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1077 if (_instructions_size == -1) { |
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1078 GUARDED_VM_ENTRY( |
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1079 nmethod* code = get_Method()->code(); |
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1080 if (code != NULL && (code->comp_level() == CompLevel_full_optimization)) { |
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1081 _instructions_size = code->insts_end() - code->verified_entry_point(); |
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1082 } else { |
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1083 _instructions_size = 0; |
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1084 } |
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1085 ); |
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1086 } |
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1087 return _instructions_size; |
| 0 | 1088 } |
| 1089 | |
| 1090 // ------------------------------------------------------------------ | |
| 1091 // ciMethod::log_nmethod_identity | |
| 1092 void ciMethod::log_nmethod_identity(xmlStream* log) { | |
| 1093 GUARDED_VM_ENTRY( | |
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1094 nmethod* code = get_Method()->code(); |
| 0 | 1095 if (code != NULL) { |
| 1096 code->log_identity(log); | |
| 1097 } | |
| 1098 ) | |
| 1099 } | |
| 1100 | |
| 1101 // ------------------------------------------------------------------ | |
| 1102 // ciMethod::is_not_reached | |
| 1103 bool ciMethod::is_not_reached(int bci) { | |
| 1104 check_is_loaded(); | |
| 1105 VM_ENTRY_MARK; | |
| 1106 return Interpreter::is_not_reached( | |
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1107 methodHandle(THREAD, get_Method()), bci); |
| 0 | 1108 } |
| 1109 | |
| 1110 // ------------------------------------------------------------------ | |
| 1111 // ciMethod::was_never_executed | |
| 1112 bool ciMethod::was_executed_more_than(int times) { | |
| 1113 VM_ENTRY_MARK; | |
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1114 return get_Method()->was_executed_more_than(times); |
| 0 | 1115 } |
| 1116 | |
| 1117 // ------------------------------------------------------------------ | |
| 1118 // ciMethod::has_unloaded_classes_in_signature | |
| 1119 bool ciMethod::has_unloaded_classes_in_signature() { | |
| 1120 VM_ENTRY_MARK; | |
| 1121 { | |
| 1122 EXCEPTION_MARK; | |
|
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1123 methodHandle m(THREAD, get_Method()); |
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1124 bool has_unloaded = Method::has_unloaded_classes_in_signature(m, (JavaThread *)THREAD); |
| 0 | 1125 if( HAS_PENDING_EXCEPTION ) { |
| 1126 CLEAR_PENDING_EXCEPTION; | |
| 1127 return true; // Declare that we may have unloaded classes | |
| 1128 } | |
| 1129 return has_unloaded; | |
| 1130 } | |
| 1131 } | |
| 1132 | |
| 1133 // ------------------------------------------------------------------ | |
| 1134 // ciMethod::is_klass_loaded | |
| 1135 bool ciMethod::is_klass_loaded(int refinfo_index, bool must_be_resolved) const { | |
| 1136 VM_ENTRY_MARK; | |
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1137 return get_Method()->is_klass_loaded(refinfo_index, must_be_resolved); |
| 0 | 1138 } |
| 1139 | |
| 1140 // ------------------------------------------------------------------ | |
| 1141 // ciMethod::check_call | |
| 1142 bool ciMethod::check_call(int refinfo_index, bool is_static) const { | |
|
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1143 // This method is used only in C2 from InlineTree::ok_to_inline, |
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1144 // and is only used under -Xcomp or -XX:CompileTheWorld. |
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1145 // It appears to fail when applied to an invokeinterface call site. |
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1146 // FIXME: Remove this method and resolve_method_statically; refactor to use the other LinkResolver entry points. |
| 0 | 1147 VM_ENTRY_MARK; |
| 1148 { | |
| 1149 EXCEPTION_MARK; | |
| 1150 HandleMark hm(THREAD); | |
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1151 constantPoolHandle pool (THREAD, get_Method()->constants()); |
| 0 | 1152 methodHandle spec_method; |
| 1153 KlassHandle spec_klass; | |
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1154 Bytecodes::Code code = (is_static ? Bytecodes::_invokestatic : Bytecodes::_invokevirtual); |
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1155 LinkResolver::resolve_method_statically(spec_method, spec_klass, code, pool, refinfo_index, THREAD); |
| 0 | 1156 if (HAS_PENDING_EXCEPTION) { |
| 1157 CLEAR_PENDING_EXCEPTION; | |
| 1158 return false; | |
| 1159 } else { | |
| 1160 return (spec_method->is_static() == is_static); | |
| 1161 } | |
| 1162 } | |
| 1163 return false; | |
| 1164 } | |
| 1165 | |
| 1166 // ------------------------------------------------------------------ | |
| 1167 // ciMethod::print_codes | |
| 1168 // | |
| 1169 // Print the bytecodes for this method. | |
| 1170 void ciMethod::print_codes_on(outputStream* st) { | |
| 1171 check_is_loaded(); | |
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1172 GUARDED_VM_ENTRY(get_Method()->print_codes_on(st);) |
| 0 | 1173 } |
| 1174 | |
| 1175 | |
| 1176 #define FETCH_FLAG_FROM_VM(flag_accessor) { \ | |
| 1177 check_is_loaded(); \ | |
| 1178 VM_ENTRY_MARK; \ | |
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1179 return get_Method()->flag_accessor(); \ |
| 0 | 1180 } |
| 1181 | |
| 1182 bool ciMethod::is_empty_method() const { FETCH_FLAG_FROM_VM(is_empty_method); } | |
| 1183 bool ciMethod::is_vanilla_constructor() const { FETCH_FLAG_FROM_VM(is_vanilla_constructor); } | |
| 1184 bool ciMethod::has_loops () const { FETCH_FLAG_FROM_VM(has_loops); } | |
| 1185 bool ciMethod::has_jsrs () const { FETCH_FLAG_FROM_VM(has_jsrs); } | |
| 1186 bool ciMethod::is_accessor () const { FETCH_FLAG_FROM_VM(is_accessor); } | |
| 1187 bool ciMethod::is_initializer () const { FETCH_FLAG_FROM_VM(is_initializer); } | |
| 1188 | |
| 10278 | 1189 bool ciMethod::is_boxing_method() const { |
| 1190 if (holder()->is_box_klass()) { | |
| 1191 switch (intrinsic_id()) { | |
| 1192 case vmIntrinsics::_Boolean_valueOf: | |
| 1193 case vmIntrinsics::_Byte_valueOf: | |
| 1194 case vmIntrinsics::_Character_valueOf: | |
| 1195 case vmIntrinsics::_Short_valueOf: | |
| 1196 case vmIntrinsics::_Integer_valueOf: | |
| 1197 case vmIntrinsics::_Long_valueOf: | |
| 1198 case vmIntrinsics::_Float_valueOf: | |
| 1199 case vmIntrinsics::_Double_valueOf: | |
| 1200 return true; | |
| 1201 default: | |
| 1202 return false; | |
| 1203 } | |
| 1204 } | |
| 1205 return false; | |
| 1206 } | |
| 1207 | |
| 1208 bool ciMethod::is_unboxing_method() const { | |
| 1209 if (holder()->is_box_klass()) { | |
| 1210 switch (intrinsic_id()) { | |
| 1211 case vmIntrinsics::_booleanValue: | |
| 1212 case vmIntrinsics::_byteValue: | |
| 1213 case vmIntrinsics::_charValue: | |
| 1214 case vmIntrinsics::_shortValue: | |
| 1215 case vmIntrinsics::_intValue: | |
| 1216 case vmIntrinsics::_longValue: | |
| 1217 case vmIntrinsics::_floatValue: | |
| 1218 case vmIntrinsics::_doubleValue: | |
| 1219 return true; | |
| 1220 default: | |
| 1221 return false; | |
| 1222 } | |
| 1223 } | |
| 1224 return false; | |
| 1225 } | |
| 1226 | |
| 0 | 1227 BCEscapeAnalyzer *ciMethod::get_bcea() { |
|
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1228 #ifdef COMPILER2 |
| 0 | 1229 if (_bcea == NULL) { |
| 1230 _bcea = new (CURRENT_ENV->arena()) BCEscapeAnalyzer(this, NULL); | |
| 1231 } | |
| 1232 return _bcea; | |
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1233 #else // COMPILER2 |
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1234 ShouldNotReachHere(); |
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1235 return NULL; |
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1236 #endif // COMPILER2 |
| 0 | 1237 } |
| 1238 | |
| 1239 ciMethodBlocks *ciMethod::get_method_blocks() { | |
| 1240 Arena *arena = CURRENT_ENV->arena(); | |
| 1241 if (_method_blocks == NULL) { | |
| 1242 _method_blocks = new (arena) ciMethodBlocks(arena, this); | |
| 1243 } | |
| 1244 return _method_blocks; | |
| 1245 } | |
| 1246 | |
| 1247 #undef FETCH_FLAG_FROM_VM | |
| 1248 | |
|
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1249 void ciMethod::dump_replay_data(outputStream* st) { |
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1250 ASSERT_IN_VM; |
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1251 ResourceMark rm; |
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1252 Method* method = get_Method(); |
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1253 MethodCounters* mcs = method->method_counters(); |
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1254 Klass* holder = method->method_holder(); |
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1255 st->print_cr("ciMethod %s %s %s %d %d %d %d %d", |
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1256 holder->name()->as_quoted_ascii(), |
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1257 method->name()->as_quoted_ascii(), |
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1258 method->signature()->as_quoted_ascii(), |
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1259 mcs == NULL ? 0 : mcs->invocation_counter()->raw_counter(), |
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1260 mcs == NULL ? 0 : mcs->backedge_counter()->raw_counter(), |
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1261 interpreter_invocation_count(), |
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1262 interpreter_throwout_count(), |
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1263 _instructions_size); |
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1264 } |
| 0 | 1265 |
| 1266 // ------------------------------------------------------------------ | |
| 1267 // ciMethod::print_codes | |
| 1268 // | |
| 1269 // Print a range of the bytecodes for this method. | |
| 1270 void ciMethod::print_codes_on(int from, int to, outputStream* st) { | |
| 1271 check_is_loaded(); | |
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1272 GUARDED_VM_ENTRY(get_Method()->print_codes_on(from, to, st);) |
| 0 | 1273 } |
| 1274 | |
| 1275 // ------------------------------------------------------------------ | |
| 1276 // ciMethod::print_name | |
| 1277 // | |
| 1278 // Print the name of this method, including signature and some flags. | |
| 1279 void ciMethod::print_name(outputStream* st) { | |
| 1280 check_is_loaded(); | |
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1281 GUARDED_VM_ENTRY(get_Method()->print_name(st);) |
| 0 | 1282 } |
| 1283 | |
| 1284 // ------------------------------------------------------------------ | |
| 1285 // ciMethod::print_short_name | |
| 1286 // | |
| 1287 // Print the name of this method, without signature. | |
| 1288 void ciMethod::print_short_name(outputStream* st) { | |
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1289 if (is_loaded()) { |
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1290 GUARDED_VM_ENTRY(get_Method()->print_short_name(st);); |
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1291 } else { |
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1292 // Fall back if method is not loaded. |
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1293 holder()->print_name_on(st); |
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1294 st->print("::"); |
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1295 name()->print_symbol_on(st); |
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1296 if (WizardMode) |
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1297 signature()->as_symbol()->print_symbol_on(st); |
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1298 } |
| 0 | 1299 } |
| 1300 | |
| 1301 // ------------------------------------------------------------------ | |
| 1302 // ciMethod::print_impl | |
| 1303 // | |
| 1304 // Implementation of the print method. | |
| 1305 void ciMethod::print_impl(outputStream* st) { | |
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1306 ciMetadata::print_impl(st); |
| 0 | 1307 st->print(" name="); |
| 1308 name()->print_symbol_on(st); | |
| 1309 st->print(" holder="); | |
| 1310 holder()->print_name_on(st); | |
| 1311 st->print(" signature="); | |
| 1312 signature()->as_symbol()->print_symbol_on(st); | |
| 1313 if (is_loaded()) { | |
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1314 st->print(" loaded=true"); |
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1315 st->print(" arg_size=%d", arg_size()); |
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1316 st->print(" flags="); |
| 0 | 1317 flags().print_member_flags(st); |
| 1318 } else { | |
| 1319 st->print(" loaded=false"); | |
| 1320 } | |
| 1321 } |