Mercurial > hg > truffle
annotate src/share/vm/ci/ciMethod.cpp @ 6940:18fb7da42534
8000725: NPG: method_holder() and pool_holder() and pool_holder field should be InstanceKlass
Summary: Change types of above methods and field to InstanceKlass and remove unneeded casts from the source files.
Reviewed-by: dholmes, coleenp, zgu
Contributed-by: harold.seigel@oracle.com
| author | coleenp |
|---|---|
| date | Tue, 06 Nov 2012 15:09:37 -0500 |
| parents | da91efe96a93 |
| children | e522a00b91aa bd7a7ce2e264 |
| rev | line source |
|---|---|
| 0 | 1 /* |
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2 * Copyright (c) 1999, 2012, 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" | |
| 34 #include "ci/ciUtilities.hpp" | |
| 35 #include "classfile/systemDictionary.hpp" | |
| 36 #include "compiler/abstractCompiler.hpp" | |
| 37 #include "compiler/compilerOracle.hpp" | |
| 38 #include "compiler/methodLiveness.hpp" | |
| 39 #include "interpreter/interpreter.hpp" | |
| 40 #include "interpreter/linkResolver.hpp" | |
| 41 #include "interpreter/oopMapCache.hpp" | |
| 42 #include "memory/allocation.inline.hpp" | |
| 43 #include "memory/resourceArea.hpp" | |
| 44 #include "oops/generateOopMap.hpp" | |
| 45 #include "oops/oop.inline.hpp" | |
| 46 #include "prims/nativeLookup.hpp" | |
| 47 #include "runtime/deoptimization.hpp" | |
| 48 #include "utilities/bitMap.inline.hpp" | |
| 49 #include "utilities/xmlstream.hpp" | |
| 50 #ifdef COMPILER2 | |
| 51 #include "ci/bcEscapeAnalyzer.hpp" | |
| 52 #include "ci/ciTypeFlow.hpp" | |
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53 #include "oops/method.hpp" |
| 1972 | 54 #endif |
| 55 #ifdef SHARK | |
| 56 #include "ci/ciTypeFlow.hpp" | |
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57 #include "oops/method.hpp" |
| 1972 | 58 #endif |
| 0 | 59 |
| 60 // ciMethod | |
| 61 // | |
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62 // This class represents a Method* in the HotSpot virtual |
| 0 | 63 // machine. |
| 64 | |
| 65 | |
| 66 // ------------------------------------------------------------------ | |
| 67 // ciMethod::ciMethod | |
| 68 // | |
| 69 // Loaded method. | |
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70 ciMethod::ciMethod(methodHandle h_m) : ciMetadata(h_m()) { |
| 0 | 71 assert(h_m() != NULL, "no null method"); |
| 72 | |
| 73 // These fields are always filled in in loaded methods. | |
| 74 _flags = ciFlags(h_m()->access_flags()); | |
| 75 | |
| 76 // Easy to compute, so fill them in now. | |
| 77 _max_stack = h_m()->max_stack(); | |
| 78 _max_locals = h_m()->max_locals(); | |
| 79 _code_size = h_m()->code_size(); | |
| 80 _intrinsic_id = h_m()->intrinsic_id(); | |
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81 _handler_count = h_m()->exception_table_length(); |
| 0 | 82 _uses_monitors = h_m()->access_flags().has_monitor_bytecodes(); |
| 83 _balanced_monitors = !_uses_monitors || h_m()->access_flags().is_monitor_matching(); | |
| 1783 | 84 _is_c1_compilable = !h_m()->is_not_c1_compilable(); |
| 85 _is_c2_compilable = !h_m()->is_not_c2_compilable(); | |
| 0 | 86 // Lazy fields, filled in on demand. Require allocation. |
| 87 _code = NULL; | |
| 88 _exception_handlers = NULL; | |
| 89 _liveness = NULL; | |
| 90 _method_blocks = NULL; | |
| 1692 | 91 #if defined(COMPILER2) || defined(SHARK) |
| 0 | 92 _flow = NULL; |
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93 _bcea = NULL; |
| 1692 | 94 #endif // COMPILER2 || SHARK |
| 0 | 95 |
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96 ciEnv *env = CURRENT_ENV; |
| 1783 | 97 if (env->jvmti_can_hotswap_or_post_breakpoint() && can_be_compiled()) { |
| 0 | 98 // 6328518 check hotswap conditions under the right lock. |
| 99 MutexLocker locker(Compile_lock); | |
| 100 if (Dependencies::check_evol_method(h_m()) != NULL) { | |
| 1783 | 101 _is_c1_compilable = false; |
| 102 _is_c2_compilable = false; | |
| 0 | 103 } |
| 104 } else { | |
| 105 CHECK_UNHANDLED_OOPS_ONLY(Thread::current()->clear_unhandled_oops()); | |
| 106 } | |
| 107 | |
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108 if (h_m()->method_holder()->is_linked()) { |
| 0 | 109 _can_be_statically_bound = h_m()->can_be_statically_bound(); |
| 110 } else { | |
| 111 // Have to use a conservative value in this case. | |
| 112 _can_be_statically_bound = false; | |
| 113 } | |
| 114 | |
| 115 // Adjust the definition of this condition to be more useful: | |
| 116 // %%% take these conditions into account in vtable generation | |
| 117 if (!_can_be_statically_bound && h_m()->is_private()) | |
| 118 _can_be_statically_bound = true; | |
| 119 if (_can_be_statically_bound && h_m()->is_abstract()) | |
| 120 _can_be_statically_bound = false; | |
| 121 | |
| 122 // generating _signature may allow GC and therefore move m. | |
| 123 // These fields are always filled in. | |
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124 _name = env->get_symbol(h_m()->name()); |
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125 _holder = env->get_instance_klass(h_m()->method_holder()); |
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126 ciSymbol* sig_symbol = env->get_symbol(h_m()->signature()); |
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127 constantPoolHandle cpool = h_m()->constants(); |
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128 _signature = new (env->arena()) ciSignature(_holder, cpool, sig_symbol); |
| 0 | 129 _method_data = NULL; |
| 130 // Take a snapshot of these values, so they will be commensurate with the MDO. | |
| 1783 | 131 if (ProfileInterpreter || TieredCompilation) { |
| 0 | 132 int invcnt = h_m()->interpreter_invocation_count(); |
| 133 // if the value overflowed report it as max int | |
| 134 _interpreter_invocation_count = invcnt < 0 ? max_jint : invcnt ; | |
| 135 _interpreter_throwout_count = h_m()->interpreter_throwout_count(); | |
| 136 } else { | |
| 137 _interpreter_invocation_count = 0; | |
| 138 _interpreter_throwout_count = 0; | |
| 139 } | |
| 140 if (_interpreter_invocation_count == 0) | |
| 141 _interpreter_invocation_count = 1; | |
| 142 } | |
| 143 | |
| 144 | |
| 145 // ------------------------------------------------------------------ | |
| 146 // ciMethod::ciMethod | |
| 147 // | |
| 148 // Unloaded method. | |
| 149 ciMethod::ciMethod(ciInstanceKlass* holder, | |
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150 ciSymbol* name, |
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151 ciSymbol* signature, |
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152 ciInstanceKlass* accessor) : |
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153 ciMetadata((Metadata*)NULL), |
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154 _name( name), |
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155 _holder( holder), |
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156 _intrinsic_id( vmIntrinsics::_none), |
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157 _liveness( NULL), |
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158 _can_be_statically_bound(false), |
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159 _method_blocks( NULL), |
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160 _method_data( NULL) |
| 1692 | 161 #if defined(COMPILER2) || defined(SHARK) |
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162 , |
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163 _flow( NULL), |
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164 _bcea( NULL) |
| 1692 | 165 #endif // COMPILER2 || SHARK |
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166 { |
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167 // Usually holder and accessor are the same type but in some cases |
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168 // the holder has the wrong class loader (e.g. invokedynamic call |
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169 // sites) so we pass the accessor. |
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170 _signature = new (CURRENT_ENV->arena()) ciSignature(accessor, constantPoolHandle(), signature); |
| 0 | 171 } |
| 172 | |
| 173 | |
| 174 // ------------------------------------------------------------------ | |
| 175 // ciMethod::load_code | |
| 176 // | |
| 177 // Load the bytecodes and exception handler table for this method. | |
| 178 void ciMethod::load_code() { | |
| 179 VM_ENTRY_MARK; | |
| 180 assert(is_loaded(), "only loaded methods have code"); | |
| 181 | |
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182 Method* me = get_Method(); |
| 0 | 183 Arena* arena = CURRENT_THREAD_ENV->arena(); |
| 184 | |
| 185 // Load the bytecodes. | |
| 186 _code = (address)arena->Amalloc(code_size()); | |
| 187 memcpy(_code, me->code_base(), code_size()); | |
| 188 | |
| 189 // Revert any breakpoint bytecodes in ci's copy | |
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190 if (me->number_of_breakpoints() > 0) { |
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191 BreakpointInfo* bp = me->method_holder()->breakpoints(); |
| 0 | 192 for (; bp != NULL; bp = bp->next()) { |
| 193 if (bp->match(me)) { | |
| 194 code_at_put(bp->bci(), bp->orig_bytecode()); | |
| 195 } | |
| 196 } | |
| 197 } | |
| 198 | |
| 199 // And load the exception table. | |
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200 ExceptionTable exc_table(me); |
| 0 | 201 |
| 202 // Allocate one extra spot in our list of exceptions. This | |
| 203 // last entry will be used to represent the possibility that | |
| 204 // an exception escapes the method. See ciExceptionHandlerStream | |
| 205 // for details. | |
| 206 _exception_handlers = | |
| 207 (ciExceptionHandler**)arena->Amalloc(sizeof(ciExceptionHandler*) | |
| 208 * (_handler_count + 1)); | |
| 209 if (_handler_count > 0) { | |
| 210 for (int i=0; i<_handler_count; i++) { | |
| 211 _exception_handlers[i] = new (arena) ciExceptionHandler( | |
| 212 holder(), | |
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213 /* start */ exc_table.start_pc(i), |
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214 /* limit */ exc_table.end_pc(i), |
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215 /* goto pc */ exc_table.handler_pc(i), |
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216 /* cp index */ exc_table.catch_type_index(i)); |
| 0 | 217 } |
| 218 } | |
| 219 | |
| 220 // Put an entry at the end of our list to represent the possibility | |
| 221 // of exceptional exit. | |
| 222 _exception_handlers[_handler_count] = | |
| 223 new (arena) ciExceptionHandler(holder(), 0, code_size(), -1, 0); | |
| 224 | |
| 225 if (CIPrintMethodCodes) { | |
| 226 print_codes(); | |
| 227 } | |
| 228 } | |
| 229 | |
| 230 | |
| 231 // ------------------------------------------------------------------ | |
| 232 // ciMethod::has_linenumber_table | |
| 233 // | |
| 234 // length unknown until decompression | |
| 235 bool ciMethod::has_linenumber_table() const { | |
| 236 check_is_loaded(); | |
| 237 VM_ENTRY_MARK; | |
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238 return get_Method()->has_linenumber_table(); |
| 0 | 239 } |
| 240 | |
| 241 | |
| 242 // ------------------------------------------------------------------ | |
| 243 // ciMethod::compressed_linenumber_table | |
| 244 u_char* ciMethod::compressed_linenumber_table() const { | |
| 245 check_is_loaded(); | |
| 246 VM_ENTRY_MARK; | |
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247 return get_Method()->compressed_linenumber_table(); |
| 0 | 248 } |
| 249 | |
| 250 | |
| 251 // ------------------------------------------------------------------ | |
| 252 // ciMethod::line_number_from_bci | |
| 253 int ciMethod::line_number_from_bci(int bci) const { | |
| 254 check_is_loaded(); | |
| 255 VM_ENTRY_MARK; | |
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256 return get_Method()->line_number_from_bci(bci); |
| 0 | 257 } |
| 258 | |
| 259 | |
| 260 // ------------------------------------------------------------------ | |
| 261 // ciMethod::vtable_index | |
| 262 // | |
| 263 // Get the position of this method's entry in the vtable, if any. | |
| 264 int ciMethod::vtable_index() { | |
| 265 check_is_loaded(); | |
| 266 assert(holder()->is_linked(), "must be linked"); | |
| 267 VM_ENTRY_MARK; | |
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268 return get_Method()->vtable_index(); |
| 0 | 269 } |
| 270 | |
| 271 | |
| 1692 | 272 #ifdef SHARK |
| 273 // ------------------------------------------------------------------ | |
| 274 // ciMethod::itable_index | |
| 275 // | |
| 276 // Get the position of this method's entry in the itable, if any. | |
| 277 int ciMethod::itable_index() { | |
| 278 check_is_loaded(); | |
| 279 assert(holder()->is_linked(), "must be linked"); | |
| 280 VM_ENTRY_MARK; | |
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281 return klassItable::compute_itable_index(get_Method()); |
| 1692 | 282 } |
| 283 #endif // SHARK | |
| 284 | |
| 285 | |
| 0 | 286 // ------------------------------------------------------------------ |
| 287 // ciMethod::native_entry | |
| 288 // | |
| 289 // Get the address of this method's native code, if any. | |
| 290 address ciMethod::native_entry() { | |
| 291 check_is_loaded(); | |
| 292 assert(flags().is_native(), "must be native method"); | |
| 293 VM_ENTRY_MARK; | |
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294 Method* method = get_Method(); |
| 0 | 295 address entry = method->native_function(); |
| 296 assert(entry != NULL, "must be valid entry point"); | |
| 297 return entry; | |
| 298 } | |
| 299 | |
| 300 | |
| 301 // ------------------------------------------------------------------ | |
| 302 // ciMethod::interpreter_entry | |
| 303 // | |
| 304 // Get the entry point for running this method in the interpreter. | |
| 305 address ciMethod::interpreter_entry() { | |
| 306 check_is_loaded(); | |
| 307 VM_ENTRY_MARK; | |
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308 methodHandle mh(THREAD, get_Method()); |
| 0 | 309 return Interpreter::entry_for_method(mh); |
| 310 } | |
| 311 | |
| 312 | |
| 313 // ------------------------------------------------------------------ | |
| 314 // ciMethod::uses_balanced_monitors | |
| 315 // | |
| 316 // Does this method use monitors in a strict stack-disciplined manner? | |
| 317 bool ciMethod::has_balanced_monitors() { | |
| 318 check_is_loaded(); | |
| 319 if (_balanced_monitors) return true; | |
| 320 | |
| 321 // Analyze the method to see if monitors are used properly. | |
| 322 VM_ENTRY_MARK; | |
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323 methodHandle method(THREAD, get_Method()); |
| 0 | 324 assert(method->has_monitor_bytecodes(), "should have checked this"); |
| 325 | |
| 326 // Check to see if a previous compilation computed the | |
| 327 // monitor-matching analysis. | |
| 328 if (method->guaranteed_monitor_matching()) { | |
| 329 _balanced_monitors = true; | |
| 330 return true; | |
| 331 } | |
| 332 | |
| 333 { | |
| 334 EXCEPTION_MARK; | |
| 335 ResourceMark rm(THREAD); | |
| 336 GeneratePairingInfo gpi(method); | |
| 337 gpi.compute_map(CATCH); | |
| 338 if (!gpi.monitor_safe()) { | |
| 339 return false; | |
| 340 } | |
| 341 method->set_guaranteed_monitor_matching(); | |
| 342 _balanced_monitors = true; | |
| 343 } | |
| 344 return true; | |
| 345 } | |
| 346 | |
| 347 | |
| 348 // ------------------------------------------------------------------ | |
| 349 // ciMethod::get_flow_analysis | |
| 350 ciTypeFlow* ciMethod::get_flow_analysis() { | |
| 1692 | 351 #if defined(COMPILER2) || defined(SHARK) |
| 0 | 352 if (_flow == NULL) { |
| 353 ciEnv* env = CURRENT_ENV; | |
| 354 _flow = new (env->arena()) ciTypeFlow(env, this); | |
| 355 _flow->do_flow(); | |
| 356 } | |
| 357 return _flow; | |
| 1692 | 358 #else // COMPILER2 || SHARK |
| 0 | 359 ShouldNotReachHere(); |
| 360 return NULL; | |
| 1692 | 361 #endif // COMPILER2 || SHARK |
| 0 | 362 } |
| 363 | |
| 364 | |
| 365 // ------------------------------------------------------------------ | |
| 366 // ciMethod::get_osr_flow_analysis | |
| 367 ciTypeFlow* ciMethod::get_osr_flow_analysis(int osr_bci) { | |
| 1692 | 368 #if defined(COMPILER2) || defined(SHARK) |
| 0 | 369 // OSR entry points are always place after a call bytecode of some sort |
| 370 assert(osr_bci >= 0, "must supply valid OSR entry point"); | |
| 371 ciEnv* env = CURRENT_ENV; | |
| 372 ciTypeFlow* flow = new (env->arena()) ciTypeFlow(env, this, osr_bci); | |
| 373 flow->do_flow(); | |
| 374 return flow; | |
| 1692 | 375 #else // COMPILER2 || SHARK |
| 0 | 376 ShouldNotReachHere(); |
| 377 return NULL; | |
| 1692 | 378 #endif // COMPILER2 || SHARK |
| 0 | 379 } |
| 380 | |
| 381 // ------------------------------------------------------------------ | |
| 991 | 382 // ciMethod::raw_liveness_at_bci |
| 0 | 383 // |
| 384 // Which local variables are live at a specific bci? | |
| 991 | 385 MethodLivenessResult ciMethod::raw_liveness_at_bci(int bci) { |
| 0 | 386 check_is_loaded(); |
| 387 if (_liveness == NULL) { | |
| 388 // Create the liveness analyzer. | |
| 389 Arena* arena = CURRENT_ENV->arena(); | |
| 390 _liveness = new (arena) MethodLiveness(arena, this); | |
| 391 _liveness->compute_liveness(); | |
| 392 } | |
| 991 | 393 return _liveness->get_liveness_at(bci); |
| 394 } | |
| 395 | |
| 396 // ------------------------------------------------------------------ | |
| 397 // ciMethod::liveness_at_bci | |
| 398 // | |
| 399 // Which local variables are live at a specific bci? When debugging | |
| 400 // will return true for all locals in some cases to improve debug | |
| 401 // information. | |
| 402 MethodLivenessResult ciMethod::liveness_at_bci(int bci) { | |
| 403 MethodLivenessResult result = raw_liveness_at_bci(bci); | |
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404 if (CURRENT_ENV->jvmti_can_access_local_variables() || DeoptimizeALot || CompileTheWorld) { |
| 0 | 405 // Keep all locals live for the user's edification and amusement. |
| 406 result.at_put_range(0, result.size(), true); | |
| 407 } | |
| 408 return result; | |
| 409 } | |
| 410 | |
| 411 // ciMethod::live_local_oops_at_bci | |
| 412 // | |
| 413 // find all the live oops in the locals array for a particular bci | |
| 414 // Compute what the interpreter believes by using the interpreter | |
| 415 // oopmap generator. This is used as a double check during osr to | |
| 416 // guard against conservative result from MethodLiveness making us | |
| 417 // think a dead oop is live. MethodLiveness is conservative in the | |
| 418 // sense that it may consider locals to be live which cannot be live, | |
| 419 // like in the case where a local could contain an oop or a primitive | |
| 420 // along different paths. In that case the local must be dead when | |
| 421 // those paths merge. Since the interpreter's viewpoint is used when | |
| 422 // gc'ing an interpreter frame we need to use its viewpoint during | |
| 423 // OSR when loading the locals. | |
| 424 | |
| 425 BitMap ciMethod::live_local_oops_at_bci(int bci) { | |
| 426 VM_ENTRY_MARK; | |
| 427 InterpreterOopMap mask; | |
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428 OopMapCache::compute_one_oop_map(get_Method(), bci, &mask); |
| 0 | 429 int mask_size = max_locals(); |
| 430 BitMap result(mask_size); | |
| 431 result.clear(); | |
| 432 int i; | |
| 433 for (i = 0; i < mask_size ; i++ ) { | |
| 434 if (mask.is_oop(i)) result.set_bit(i); | |
| 435 } | |
| 436 return result; | |
| 437 } | |
| 438 | |
| 439 | |
| 440 #ifdef COMPILER1 | |
| 441 // ------------------------------------------------------------------ | |
| 442 // ciMethod::bci_block_start | |
| 443 // | |
| 444 // Marks all bcis where a new basic block starts | |
| 445 const BitMap ciMethod::bci_block_start() { | |
| 446 check_is_loaded(); | |
| 447 if (_liveness == NULL) { | |
| 448 // Create the liveness analyzer. | |
| 449 Arena* arena = CURRENT_ENV->arena(); | |
| 450 _liveness = new (arena) MethodLiveness(arena, this); | |
| 451 _liveness->compute_liveness(); | |
| 452 } | |
| 453 | |
| 454 return _liveness->get_bci_block_start(); | |
| 455 } | |
| 456 #endif // COMPILER1 | |
| 457 | |
| 458 | |
| 459 // ------------------------------------------------------------------ | |
| 460 // ciMethod::call_profile_at_bci | |
| 461 // | |
| 462 // Get the ciCallProfile for the invocation of this method. | |
| 463 // Also reports receiver types for non-call type checks (if TypeProfileCasts). | |
| 464 ciCallProfile ciMethod::call_profile_at_bci(int bci) { | |
| 465 ResourceMark rm; | |
| 466 ciCallProfile result; | |
| 467 if (method_data() != NULL && method_data()->is_mature()) { | |
| 468 ciProfileData* data = method_data()->bci_to_data(bci); | |
| 469 if (data != NULL && data->is_CounterData()) { | |
| 470 // Every profiled call site has a counter. | |
| 471 int count = data->as_CounterData()->count(); | |
| 472 | |
| 473 if (!data->is_ReceiverTypeData()) { | |
| 474 result._receiver_count[0] = 0; // that's a definite zero | |
| 475 } else { // ReceiverTypeData is a subclass of CounterData | |
| 476 ciReceiverTypeData* call = (ciReceiverTypeData*)data->as_ReceiverTypeData(); | |
| 477 // In addition, virtual call sites have receiver type information | |
| 478 int receivers_count_total = 0; | |
| 479 int morphism = 0; | |
| 1783 | 480 // Precompute morphism for the possible fixup |
| 0 | 481 for (uint i = 0; i < call->row_limit(); i++) { |
| 482 ciKlass* receiver = call->receiver(i); | |
| 483 if (receiver == NULL) continue; | |
| 1783 | 484 morphism++; |
| 485 } | |
| 486 int epsilon = 0; | |
| 487 if (TieredCompilation && ProfileInterpreter) { | |
| 488 // Interpreter and C1 treat final and special invokes differently. | |
| 489 // C1 will record a type, whereas the interpreter will just | |
| 490 // increment the count. Detect this case. | |
| 491 if (morphism == 1 && count > 0) { | |
| 492 epsilon = count; | |
| 493 count = 0; | |
| 494 } | |
| 495 } | |
| 496 for (uint i = 0; i < call->row_limit(); i++) { | |
| 497 ciKlass* receiver = call->receiver(i); | |
| 498 if (receiver == NULL) continue; | |
| 499 int rcount = call->receiver_count(i) + epsilon; | |
| 0 | 500 if (rcount == 0) rcount = 1; // Should be valid value |
| 501 receivers_count_total += rcount; | |
| 502 // Add the receiver to result data. | |
| 503 result.add_receiver(receiver, rcount); | |
| 504 // If we extend profiling to record methods, | |
| 505 // we will set result._method also. | |
| 506 } | |
| 507 // Determine call site's morphism. | |
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508 // The call site count is 0 with known morphism (onlt 1 or 2 receivers) |
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509 // or < 0 in the case of a type check failured for checkcast, aastore, instanceof. |
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510 // The call site count is > 0 in the case of a polymorphic virtual call. |
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511 if (morphism > 0 && morphism == result._limit) { |
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512 // The morphism <= MorphismLimit. |
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513 if ((morphism < ciCallProfile::MorphismLimit) || |
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514 (morphism == ciCallProfile::MorphismLimit && count == 0)) { |
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515 #ifdef ASSERT |
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516 if (count > 0) { |
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517 this->print_short_name(tty); |
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518 tty->print_cr(" @ bci:%d", bci); |
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519 this->print_codes(); |
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520 assert(false, "this call site should not be polymorphic"); |
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521 } |
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522 #endif |
| 0 | 523 result._morphism = morphism; |
| 524 } | |
| 525 } | |
| 526 // Make the count consistent if this is a call profile. If count is | |
| 527 // zero or less, presume that this is a typecheck profile and | |
| 528 // do nothing. Otherwise, increase count to be the sum of all | |
| 529 // receiver's counts. | |
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530 if (count >= 0) { |
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531 count += receivers_count_total; |
| 0 | 532 } |
| 533 } | |
| 534 result._count = count; | |
| 535 } | |
| 536 } | |
| 537 return result; | |
| 538 } | |
| 539 | |
| 540 // ------------------------------------------------------------------ | |
| 541 // Add new receiver and sort data by receiver's profile count. | |
| 542 void ciCallProfile::add_receiver(ciKlass* receiver, int receiver_count) { | |
| 543 // Add new receiver and sort data by receiver's counts when we have space | |
| 544 // for it otherwise replace the less called receiver (less called receiver | |
| 545 // is placed to the last array element which is not used). | |
| 546 // First array's element contains most called receiver. | |
| 547 int i = _limit; | |
| 548 for (; i > 0 && receiver_count > _receiver_count[i-1]; i--) { | |
| 549 _receiver[i] = _receiver[i-1]; | |
| 550 _receiver_count[i] = _receiver_count[i-1]; | |
| 551 } | |
| 552 _receiver[i] = receiver; | |
| 553 _receiver_count[i] = receiver_count; | |
| 554 if (_limit < MorphismLimit) _limit++; | |
| 555 } | |
| 556 | |
| 557 // ------------------------------------------------------------------ | |
| 558 // ciMethod::find_monomorphic_target | |
| 559 // | |
| 560 // Given a certain calling environment, find the monomorphic target | |
| 561 // for the call. Return NULL if the call is not monomorphic in | |
| 562 // its calling environment, or if there are only abstract methods. | |
| 563 // The returned method is never abstract. | |
| 564 // Note: If caller uses a non-null result, it must inform dependencies | |
| 565 // via assert_unique_concrete_method or assert_leaf_type. | |
| 566 ciMethod* ciMethod::find_monomorphic_target(ciInstanceKlass* caller, | |
| 567 ciInstanceKlass* callee_holder, | |
| 568 ciInstanceKlass* actual_recv) { | |
| 569 check_is_loaded(); | |
| 570 | |
| 571 if (actual_recv->is_interface()) { | |
| 572 // %%% We cannot trust interface types, yet. See bug 6312651. | |
| 573 return NULL; | |
| 574 } | |
| 575 | |
| 576 ciMethod* root_m = resolve_invoke(caller, actual_recv); | |
| 577 if (root_m == NULL) { | |
| 578 // Something went wrong looking up the actual receiver method. | |
| 579 return NULL; | |
| 580 } | |
| 581 assert(!root_m->is_abstract(), "resolve_invoke promise"); | |
| 582 | |
| 583 // Make certain quick checks even if UseCHA is false. | |
| 584 | |
| 585 // Is it private or final? | |
| 586 if (root_m->can_be_statically_bound()) { | |
| 587 return root_m; | |
| 588 } | |
| 589 | |
| 590 if (actual_recv->is_leaf_type() && actual_recv == root_m->holder()) { | |
| 591 // Easy case. There is no other place to put a method, so don't bother | |
| 592 // to go through the VM_ENTRY_MARK and all the rest. | |
| 593 return root_m; | |
| 594 } | |
| 595 | |
| 596 // Array methods (clone, hashCode, etc.) are always statically bound. | |
| 597 // If we were to see an array type here, we'd return root_m. | |
| 598 // However, this method processes only ciInstanceKlasses. (See 4962591.) | |
| 599 // The inline_native_clone intrinsic narrows Object to T[] properly, | |
| 600 // so there is no need to do the same job here. | |
| 601 | |
| 602 if (!UseCHA) return NULL; | |
| 603 | |
| 604 VM_ENTRY_MARK; | |
| 605 | |
| 606 methodHandle target; | |
| 607 { | |
| 608 MutexLocker locker(Compile_lock); | |
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609 Klass* context = actual_recv->get_Klass(); |
| 0 | 610 target = Dependencies::find_unique_concrete_method(context, |
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611 root_m->get_Method()); |
| 0 | 612 // %%% Should upgrade this ciMethod API to look for 1 or 2 concrete methods. |
| 613 } | |
| 614 | |
| 615 #ifndef PRODUCT | |
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616 if (TraceDependencies && target() != NULL && target() != root_m->get_Method()) { |
| 0 | 617 tty->print("found a non-root unique target method"); |
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618 tty->print_cr(" context = %s", InstanceKlass::cast(actual_recv->get_Klass())->external_name()); |
| 0 | 619 tty->print(" method = "); |
| 620 target->print_short_name(tty); | |
| 621 tty->cr(); | |
| 622 } | |
| 623 #endif //PRODUCT | |
| 624 | |
| 625 if (target() == NULL) { | |
| 626 return NULL; | |
| 627 } | |
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628 if (target() == root_m->get_Method()) { |
| 0 | 629 return root_m; |
| 630 } | |
| 631 if (!root_m->is_public() && | |
| 632 !root_m->is_protected()) { | |
| 633 // If we are going to reason about inheritance, it's easiest | |
| 634 // if the method in question is public, protected, or private. | |
| 635 // If the answer is not root_m, it is conservatively correct | |
| 636 // to return NULL, even if the CHA encountered irrelevant | |
| 637 // methods in other packages. | |
| 638 // %%% TO DO: Work out logic for package-private methods | |
| 639 // with the same name but different vtable indexes. | |
| 640 return NULL; | |
| 641 } | |
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642 return CURRENT_THREAD_ENV->get_method(target()); |
| 0 | 643 } |
| 644 | |
| 645 // ------------------------------------------------------------------ | |
| 646 // ciMethod::resolve_invoke | |
| 647 // | |
| 648 // Given a known receiver klass, find the target for the call. | |
| 649 // Return NULL if the call has no target or the target is abstract. | |
| 650 ciMethod* ciMethod::resolve_invoke(ciKlass* caller, ciKlass* exact_receiver) { | |
| 651 check_is_loaded(); | |
| 652 VM_ENTRY_MARK; | |
| 653 | |
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654 KlassHandle caller_klass (THREAD, caller->get_Klass()); |
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655 KlassHandle h_recv (THREAD, exact_receiver->get_Klass()); |
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656 KlassHandle h_resolved (THREAD, holder()->get_Klass()); |
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657 Symbol* h_name = name()->get_symbol(); |
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658 Symbol* h_signature = signature()->get_symbol(); |
| 0 | 659 |
| 660 methodHandle m; | |
| 661 // Only do exact lookup if receiver klass has been linked. Otherwise, | |
| 662 // the vtable has not been setup, and the LinkResolver will fail. | |
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663 if (h_recv->oop_is_array() |
| 0 | 664 || |
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665 InstanceKlass::cast(h_recv())->is_linked() && !exact_receiver->is_interface()) { |
| 0 | 666 if (holder()->is_interface()) { |
| 667 m = LinkResolver::resolve_interface_call_or_null(h_recv, h_resolved, h_name, h_signature, caller_klass); | |
| 668 } else { | |
| 669 m = LinkResolver::resolve_virtual_call_or_null(h_recv, h_resolved, h_name, h_signature, caller_klass); | |
| 670 } | |
| 671 } | |
| 672 | |
| 673 if (m.is_null()) { | |
| 674 // Return NULL only if there was a problem with lookup (uninitialized class, etc.) | |
| 675 return NULL; | |
| 676 } | |
| 677 | |
| 678 ciMethod* result = this; | |
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679 if (m() != get_Method()) { |
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680 result = CURRENT_THREAD_ENV->get_method(m()); |
| 0 | 681 } |
| 682 | |
| 683 // Don't return abstract methods because they aren't | |
| 684 // optimizable or interesting. | |
| 685 if (result->is_abstract()) { | |
| 686 return NULL; | |
| 687 } else { | |
| 688 return result; | |
| 689 } | |
| 690 } | |
| 691 | |
| 692 // ------------------------------------------------------------------ | |
| 693 // ciMethod::resolve_vtable_index | |
| 694 // | |
| 695 // Given a known receiver klass, find the vtable index for the call. | |
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696 // Return Method::invalid_vtable_index if the vtable_index is unknown. |
| 0 | 697 int ciMethod::resolve_vtable_index(ciKlass* caller, ciKlass* receiver) { |
| 698 check_is_loaded(); | |
| 699 | |
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700 int vtable_index = Method::invalid_vtable_index; |
| 0 | 701 // Only do lookup if receiver klass has been linked. Otherwise, |
| 702 // the vtable has not been setup, and the LinkResolver will fail. | |
| 703 if (!receiver->is_interface() | |
| 704 && (!receiver->is_instance_klass() || | |
| 705 receiver->as_instance_klass()->is_linked())) { | |
| 706 VM_ENTRY_MARK; | |
| 707 | |
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708 KlassHandle caller_klass (THREAD, caller->get_Klass()); |
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709 KlassHandle h_recv (THREAD, receiver->get_Klass()); |
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710 Symbol* h_name = name()->get_symbol(); |
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711 Symbol* h_signature = signature()->get_symbol(); |
| 0 | 712 |
| 713 vtable_index = LinkResolver::resolve_virtual_vtable_index(h_recv, h_recv, h_name, h_signature, caller_klass); | |
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714 if (vtable_index == Method::nonvirtual_vtable_index) { |
| 0 | 715 // A statically bound method. Return "no such index". |
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716 vtable_index = Method::invalid_vtable_index; |
| 0 | 717 } |
| 718 } | |
| 719 | |
| 720 return vtable_index; | |
| 721 } | |
| 722 | |
| 723 // ------------------------------------------------------------------ | |
| 724 // ciMethod::interpreter_call_site_count | |
| 725 int ciMethod::interpreter_call_site_count(int bci) { | |
| 726 if (method_data() != NULL) { | |
| 727 ResourceMark rm; | |
| 728 ciProfileData* data = method_data()->bci_to_data(bci); | |
| 729 if (data != NULL && data->is_CounterData()) { | |
| 730 return scale_count(data->as_CounterData()->count()); | |
| 731 } | |
| 732 } | |
| 733 return -1; // unknown | |
| 734 } | |
| 735 | |
| 736 // ------------------------------------------------------------------ | |
| 737 // Adjust a CounterData count to be commensurate with | |
| 738 // interpreter_invocation_count. If the MDO exists for | |
| 739 // only 25% of the time the method exists, then the | |
| 740 // counts in the MDO should be scaled by 4X, so that | |
| 741 // they can be usefully and stably compared against the | |
| 742 // invocation counts in methods. | |
| 743 int ciMethod::scale_count(int count, float prof_factor) { | |
| 744 if (count > 0 && method_data() != NULL) { | |
| 1783 | 745 int counter_life; |
| 0 | 746 int method_life = interpreter_invocation_count(); |
| 1783 | 747 if (TieredCompilation) { |
| 748 // In tiered the MDO's life is measured directly, so just use the snapshotted counters | |
| 749 counter_life = MAX2(method_data()->invocation_count(), method_data()->backedge_count()); | |
| 750 } else { | |
| 751 int current_mileage = method_data()->current_mileage(); | |
| 752 int creation_mileage = method_data()->creation_mileage(); | |
| 753 counter_life = current_mileage - creation_mileage; | |
| 754 } | |
| 755 | |
| 0 | 756 // counter_life due to backedge_counter could be > method_life |
| 757 if (counter_life > method_life) | |
| 758 counter_life = method_life; | |
| 759 if (0 < counter_life && counter_life <= method_life) { | |
| 760 count = (int)((double)count * prof_factor * method_life / counter_life + 0.5); | |
| 761 count = (count > 0) ? count : 1; | |
| 762 } | |
| 763 } | |
| 764 return count; | |
| 765 } | |
| 766 | |
| 767 // ------------------------------------------------------------------ | |
| 710 | 768 // invokedynamic support |
| 1564 | 769 |
| 770 // ------------------------------------------------------------------ | |
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771 // ciMethod::is_method_handle_intrinsic |
| 710 | 772 // |
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773 // Return true if the method is an instance of the JVM-generated |
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774 // signature-polymorphic MethodHandle methods, _invokeBasic, _linkToVirtual, etc. |
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775 bool ciMethod::is_method_handle_intrinsic() const { |
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776 vmIntrinsics::ID iid = _intrinsic_id; // do not check if loaded |
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777 return (MethodHandles::is_signature_polymorphic(iid) && |
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778 MethodHandles::is_signature_polymorphic_intrinsic(iid)); |
| 710 | 779 } |
| 780 | |
| 1564 | 781 // ------------------------------------------------------------------ |
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782 // ciMethod::is_compiled_lambda_form |
| 1564 | 783 // |
| 784 // Return true if the method is a generated MethodHandle adapter. | |
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785 // These are built by Java code. |
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786 bool ciMethod::is_compiled_lambda_form() const { |
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787 vmIntrinsics::ID iid = _intrinsic_id; // do not check if loaded |
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788 return iid == vmIntrinsics::_compiledLambdaForm; |
|
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789 } |
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790 |
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791 // ------------------------------------------------------------------ |
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792 // ciMethod::has_member_arg |
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793 // |
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794 // Return true if the method is a linker intrinsic like _linkToVirtual. |
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795 // These are built by the JVM. |
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796 bool ciMethod::has_member_arg() const { |
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797 vmIntrinsics::ID iid = _intrinsic_id; // do not check if loaded |
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798 return (MethodHandles::is_signature_polymorphic(iid) && |
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799 MethodHandles::has_member_arg(iid)); |
| 710 | 800 } |
| 801 | |
| 802 // ------------------------------------------------------------------ | |
|
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803 // ciMethod::ensure_method_data |
| 0 | 804 // |
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805 // Generate new MethodData* objects at compile time. |
|
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806 // Return true if allocation was successful or no MDO is required. |
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807 bool ciMethod::ensure_method_data(methodHandle h_m) { |
| 0 | 808 EXCEPTION_CONTEXT; |
|
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809 if (is_native() || is_abstract() || h_m()->is_accessor()) return true; |
| 0 | 810 if (h_m()->method_data() == NULL) { |
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811 Method::build_interpreter_method_data(h_m, THREAD); |
| 0 | 812 if (HAS_PENDING_EXCEPTION) { |
| 813 CLEAR_PENDING_EXCEPTION; | |
| 814 } | |
| 815 } | |
| 816 if (h_m()->method_data() != NULL) { | |
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817 _method_data = CURRENT_ENV->get_method_data(h_m()->method_data()); |
| 0 | 818 _method_data->load_data(); |
|
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819 return true; |
| 0 | 820 } else { |
| 821 _method_data = CURRENT_ENV->get_empty_methodData(); | |
|
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822 return false; |
| 0 | 823 } |
| 824 } | |
| 825 | |
| 826 // public, retroactive version | |
|
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827 bool ciMethod::ensure_method_data() { |
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828 bool result = true; |
| 0 | 829 if (_method_data == NULL || _method_data->is_empty()) { |
| 830 GUARDED_VM_ENTRY({ | |
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831 result = ensure_method_data(get_Method()); |
| 0 | 832 }); |
| 833 } | |
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834 return result; |
| 0 | 835 } |
| 836 | |
| 837 | |
| 838 // ------------------------------------------------------------------ | |
| 839 // ciMethod::method_data | |
| 840 // | |
| 841 ciMethodData* ciMethod::method_data() { | |
| 842 if (_method_data != NULL) { | |
| 843 return _method_data; | |
| 844 } | |
| 845 VM_ENTRY_MARK; | |
| 846 ciEnv* env = CURRENT_ENV; | |
| 847 Thread* my_thread = JavaThread::current(); | |
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848 methodHandle h_m(my_thread, get_Method()); |
| 0 | 849 |
| 850 if (h_m()->method_data() != NULL) { | |
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851 _method_data = CURRENT_ENV->get_method_data(h_m()->method_data()); |
| 0 | 852 _method_data->load_data(); |
| 853 } else { | |
| 854 _method_data = CURRENT_ENV->get_empty_methodData(); | |
| 855 } | |
| 856 return _method_data; | |
| 857 | |
| 858 } | |
| 859 | |
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860 // ------------------------------------------------------------------ |
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861 // ciMethod::method_data_or_null |
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862 // Returns a pointer to ciMethodData if MDO exists on the VM side, |
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863 // NULL otherwise. |
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864 ciMethodData* ciMethod::method_data_or_null() { |
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865 ciMethodData *md = method_data(); |
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866 if (md->is_empty()) return NULL; |
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867 return md; |
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868 } |
| 0 | 869 |
| 870 // ------------------------------------------------------------------ | |
| 871 // ciMethod::will_link | |
| 872 // | |
| 873 // Will this method link in a specific calling context? | |
| 874 bool ciMethod::will_link(ciKlass* accessing_klass, | |
| 875 ciKlass* declared_method_holder, | |
| 876 Bytecodes::Code bc) { | |
| 877 if (!is_loaded()) { | |
| 878 // Method lookup failed. | |
| 879 return false; | |
| 880 } | |
| 881 | |
| 882 // The link checks have been front-loaded into the get_method | |
| 883 // call. This method (ciMethod::will_link()) will be removed | |
| 884 // in the future. | |
| 885 | |
| 886 return true; | |
| 887 } | |
| 888 | |
| 889 // ------------------------------------------------------------------ | |
| 890 // ciMethod::should_exclude | |
| 891 // | |
| 892 // Should this method be excluded from compilation? | |
| 893 bool ciMethod::should_exclude() { | |
| 894 check_is_loaded(); | |
| 895 VM_ENTRY_MARK; | |
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896 methodHandle mh(THREAD, get_Method()); |
| 0 | 897 bool ignore; |
| 898 return CompilerOracle::should_exclude(mh, ignore); | |
| 899 } | |
| 900 | |
| 901 // ------------------------------------------------------------------ | |
| 902 // ciMethod::should_inline | |
| 903 // | |
| 904 // Should this method be inlined during compilation? | |
| 905 bool ciMethod::should_inline() { | |
| 906 check_is_loaded(); | |
| 907 VM_ENTRY_MARK; | |
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908 methodHandle mh(THREAD, get_Method()); |
| 0 | 909 return CompilerOracle::should_inline(mh); |
| 910 } | |
| 911 | |
| 912 // ------------------------------------------------------------------ | |
| 913 // ciMethod::should_not_inline | |
| 914 // | |
| 915 // Should this method be disallowed from inlining during compilation? | |
| 916 bool ciMethod::should_not_inline() { | |
| 917 check_is_loaded(); | |
| 918 VM_ENTRY_MARK; | |
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919 methodHandle mh(THREAD, get_Method()); |
| 0 | 920 return CompilerOracle::should_not_inline(mh); |
| 921 } | |
| 922 | |
| 923 // ------------------------------------------------------------------ | |
| 924 // ciMethod::should_print_assembly | |
| 925 // | |
| 926 // Should the compiler print the generated code for this method? | |
| 927 bool ciMethod::should_print_assembly() { | |
| 928 check_is_loaded(); | |
| 929 VM_ENTRY_MARK; | |
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930 methodHandle mh(THREAD, get_Method()); |
| 0 | 931 return CompilerOracle::should_print(mh); |
| 932 } | |
| 933 | |
| 934 // ------------------------------------------------------------------ | |
| 935 // ciMethod::break_at_execute | |
| 936 // | |
| 937 // Should the compiler insert a breakpoint into the generated code | |
| 938 // method? | |
| 939 bool ciMethod::break_at_execute() { | |
| 940 check_is_loaded(); | |
| 941 VM_ENTRY_MARK; | |
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942 methodHandle mh(THREAD, get_Method()); |
| 0 | 943 return CompilerOracle::should_break_at(mh); |
| 944 } | |
| 945 | |
| 946 // ------------------------------------------------------------------ | |
| 947 // ciMethod::has_option | |
| 948 // | |
| 949 bool ciMethod::has_option(const char* option) { | |
| 950 check_is_loaded(); | |
| 951 VM_ENTRY_MARK; | |
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952 methodHandle mh(THREAD, get_Method()); |
| 0 | 953 return CompilerOracle::has_option_string(mh, option); |
| 954 } | |
| 955 | |
| 956 // ------------------------------------------------------------------ | |
| 957 // ciMethod::can_be_compiled | |
| 958 // | |
| 959 // Have previous compilations of this method succeeded? | |
| 960 bool ciMethod::can_be_compiled() { | |
| 961 check_is_loaded(); | |
| 1783 | 962 ciEnv* env = CURRENT_ENV; |
| 963 if (is_c1_compile(env->comp_level())) { | |
| 964 return _is_c1_compilable; | |
| 965 } | |
| 966 return _is_c2_compilable; | |
| 0 | 967 } |
| 968 | |
| 969 // ------------------------------------------------------------------ | |
| 970 // ciMethod::set_not_compilable | |
| 971 // | |
| 972 // Tell the VM that this method cannot be compiled at all. | |
| 973 void ciMethod::set_not_compilable() { | |
| 974 check_is_loaded(); | |
| 975 VM_ENTRY_MARK; | |
| 1783 | 976 ciEnv* env = CURRENT_ENV; |
| 977 if (is_c1_compile(env->comp_level())) { | |
| 978 _is_c1_compilable = false; | |
| 979 } else { | |
| 980 _is_c2_compilable = false; | |
| 981 } | |
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982 get_Method()->set_not_compilable(env->comp_level()); |
| 0 | 983 } |
| 984 | |
| 985 // ------------------------------------------------------------------ | |
| 986 // ciMethod::can_be_osr_compiled | |
| 987 // | |
| 988 // Have previous compilations of this method succeeded? | |
| 989 // | |
| 990 // Implementation note: the VM does not currently keep track | |
| 991 // of failed OSR compilations per bci. The entry_bci parameter | |
| 992 // is currently unused. | |
| 993 bool ciMethod::can_be_osr_compiled(int entry_bci) { | |
| 994 check_is_loaded(); | |
| 995 VM_ENTRY_MARK; | |
| 1783 | 996 ciEnv* env = CURRENT_ENV; |
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997 return !get_Method()->is_not_osr_compilable(env->comp_level()); |
| 0 | 998 } |
| 999 | |
| 1000 // ------------------------------------------------------------------ | |
| 1001 // ciMethod::has_compiled_code | |
| 1002 bool ciMethod::has_compiled_code() { | |
| 1003 VM_ENTRY_MARK; | |
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1004 return get_Method()->code() != NULL; |
| 0 | 1005 } |
| 1006 | |
| 1783 | 1007 int ciMethod::comp_level() { |
| 1008 check_is_loaded(); | |
| 1009 VM_ENTRY_MARK; | |
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1010 nmethod* nm = get_Method()->code(); |
| 1783 | 1011 if (nm != NULL) return nm->comp_level(); |
| 1012 return 0; | |
| 1013 } | |
| 1014 | |
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1015 int ciMethod::highest_osr_comp_level() { |
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1016 check_is_loaded(); |
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1017 VM_ENTRY_MARK; |
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1018 return get_Method()->highest_osr_comp_level(); |
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1019 } |
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1020 |
| 0 | 1021 // ------------------------------------------------------------------ |
|
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1022 // ciMethod::code_size_for_inlining |
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1023 // |
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1024 // Code size for inlining decisions. This method returns a code |
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1025 // size of 1 for methods which has the ForceInline annotation. |
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1026 int ciMethod::code_size_for_inlining() { |
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1027 check_is_loaded(); |
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1028 if (get_Method()->force_inline()) { |
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1029 return 1; |
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1030 } |
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1031 return code_size(); |
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1032 } |
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1033 |
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1034 // ------------------------------------------------------------------ |
| 0 | 1035 // ciMethod::instructions_size |
| 1748 | 1036 // |
| 1037 // This is a rough metric for "fat" methods, compared before inlining | |
| 1038 // with InlineSmallCode. The CodeBlob::code_size accessor includes | |
| 1039 // junk like exception handler, stubs, and constant table, which are | |
| 1040 // not highly relevant to an inlined method. So we use the more | |
| 1041 // specific accessor nmethod::insts_size. | |
| 1783 | 1042 int ciMethod::instructions_size(int comp_level) { |
| 0 | 1043 GUARDED_VM_ENTRY( |
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1044 nmethod* code = get_Method()->code(); |
| 1783 | 1045 if (code != NULL && (comp_level == CompLevel_any || comp_level == code->comp_level())) { |
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1046 return code->insts_end() - code->verified_entry_point(); |
| 0 | 1047 } |
| 1783 | 1048 return 0; |
| 0 | 1049 ) |
| 1050 } | |
| 1051 | |
| 1052 // ------------------------------------------------------------------ | |
| 1053 // ciMethod::log_nmethod_identity | |
| 1054 void ciMethod::log_nmethod_identity(xmlStream* log) { | |
| 1055 GUARDED_VM_ENTRY( | |
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1056 nmethod* code = get_Method()->code(); |
| 0 | 1057 if (code != NULL) { |
| 1058 code->log_identity(log); | |
| 1059 } | |
| 1060 ) | |
| 1061 } | |
| 1062 | |
| 1063 // ------------------------------------------------------------------ | |
| 1064 // ciMethod::is_not_reached | |
| 1065 bool ciMethod::is_not_reached(int bci) { | |
| 1066 check_is_loaded(); | |
| 1067 VM_ENTRY_MARK; | |
| 1068 return Interpreter::is_not_reached( | |
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1069 methodHandle(THREAD, get_Method()), bci); |
| 0 | 1070 } |
| 1071 | |
| 1072 // ------------------------------------------------------------------ | |
| 1073 // ciMethod::was_never_executed | |
| 1074 bool ciMethod::was_executed_more_than(int times) { | |
| 1075 VM_ENTRY_MARK; | |
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1076 return get_Method()->was_executed_more_than(times); |
| 0 | 1077 } |
| 1078 | |
| 1079 // ------------------------------------------------------------------ | |
| 1080 // ciMethod::has_unloaded_classes_in_signature | |
| 1081 bool ciMethod::has_unloaded_classes_in_signature() { | |
| 1082 VM_ENTRY_MARK; | |
| 1083 { | |
| 1084 EXCEPTION_MARK; | |
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1085 methodHandle m(THREAD, get_Method()); |
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1086 bool has_unloaded = Method::has_unloaded_classes_in_signature(m, (JavaThread *)THREAD); |
| 0 | 1087 if( HAS_PENDING_EXCEPTION ) { |
| 1088 CLEAR_PENDING_EXCEPTION; | |
| 1089 return true; // Declare that we may have unloaded classes | |
| 1090 } | |
| 1091 return has_unloaded; | |
| 1092 } | |
| 1093 } | |
| 1094 | |
| 1095 // ------------------------------------------------------------------ | |
| 1096 // ciMethod::is_klass_loaded | |
| 1097 bool ciMethod::is_klass_loaded(int refinfo_index, bool must_be_resolved) const { | |
| 1098 VM_ENTRY_MARK; | |
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1099 return get_Method()->is_klass_loaded(refinfo_index, must_be_resolved); |
| 0 | 1100 } |
| 1101 | |
| 1102 // ------------------------------------------------------------------ | |
| 1103 // ciMethod::check_call | |
| 1104 bool ciMethod::check_call(int refinfo_index, bool is_static) const { | |
| 1105 VM_ENTRY_MARK; | |
| 1106 { | |
| 1107 EXCEPTION_MARK; | |
| 1108 HandleMark hm(THREAD); | |
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1109 constantPoolHandle pool (THREAD, get_Method()->constants()); |
| 0 | 1110 methodHandle spec_method; |
| 1111 KlassHandle spec_klass; | |
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1112 Bytecodes::Code code = (is_static ? Bytecodes::_invokestatic : Bytecodes::_invokevirtual); |
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1113 LinkResolver::resolve_method_statically(spec_method, spec_klass, code, pool, refinfo_index, THREAD); |
| 0 | 1114 if (HAS_PENDING_EXCEPTION) { |
| 1115 CLEAR_PENDING_EXCEPTION; | |
| 1116 return false; | |
| 1117 } else { | |
| 1118 return (spec_method->is_static() == is_static); | |
| 1119 } | |
| 1120 } | |
| 1121 return false; | |
| 1122 } | |
| 1123 | |
| 1124 // ------------------------------------------------------------------ | |
| 1125 // ciMethod::print_codes | |
| 1126 // | |
| 1127 // Print the bytecodes for this method. | |
| 1128 void ciMethod::print_codes_on(outputStream* st) { | |
| 1129 check_is_loaded(); | |
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1130 GUARDED_VM_ENTRY(get_Method()->print_codes_on(st);) |
| 0 | 1131 } |
| 1132 | |
| 1133 | |
| 1134 #define FETCH_FLAG_FROM_VM(flag_accessor) { \ | |
| 1135 check_is_loaded(); \ | |
| 1136 VM_ENTRY_MARK; \ | |
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1137 return get_Method()->flag_accessor(); \ |
| 0 | 1138 } |
| 1139 | |
| 1140 bool ciMethod::is_empty_method() const { FETCH_FLAG_FROM_VM(is_empty_method); } | |
| 1141 bool ciMethod::is_vanilla_constructor() const { FETCH_FLAG_FROM_VM(is_vanilla_constructor); } | |
| 1142 bool ciMethod::has_loops () const { FETCH_FLAG_FROM_VM(has_loops); } | |
| 1143 bool ciMethod::has_jsrs () const { FETCH_FLAG_FROM_VM(has_jsrs); } | |
| 1144 bool ciMethod::is_accessor () const { FETCH_FLAG_FROM_VM(is_accessor); } | |
| 1145 bool ciMethod::is_initializer () const { FETCH_FLAG_FROM_VM(is_initializer); } | |
| 1146 | |
| 1147 BCEscapeAnalyzer *ciMethod::get_bcea() { | |
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1148 #ifdef COMPILER2 |
| 0 | 1149 if (_bcea == NULL) { |
| 1150 _bcea = new (CURRENT_ENV->arena()) BCEscapeAnalyzer(this, NULL); | |
| 1151 } | |
| 1152 return _bcea; | |
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1153 #else // COMPILER2 |
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1154 ShouldNotReachHere(); |
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1155 return NULL; |
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1156 #endif // COMPILER2 |
| 0 | 1157 } |
| 1158 | |
| 1159 ciMethodBlocks *ciMethod::get_method_blocks() { | |
| 1160 Arena *arena = CURRENT_ENV->arena(); | |
| 1161 if (_method_blocks == NULL) { | |
| 1162 _method_blocks = new (arena) ciMethodBlocks(arena, this); | |
| 1163 } | |
| 1164 return _method_blocks; | |
| 1165 } | |
| 1166 | |
| 1167 #undef FETCH_FLAG_FROM_VM | |
| 1168 | |
| 1169 | |
| 1170 // ------------------------------------------------------------------ | |
| 1171 // ciMethod::print_codes | |
| 1172 // | |
| 1173 // Print a range of the bytecodes for this method. | |
| 1174 void ciMethod::print_codes_on(int from, int to, outputStream* st) { | |
| 1175 check_is_loaded(); | |
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1176 GUARDED_VM_ENTRY(get_Method()->print_codes_on(from, to, st);) |
| 0 | 1177 } |
| 1178 | |
| 1179 // ------------------------------------------------------------------ | |
| 1180 // ciMethod::print_name | |
| 1181 // | |
| 1182 // Print the name of this method, including signature and some flags. | |
| 1183 void ciMethod::print_name(outputStream* st) { | |
| 1184 check_is_loaded(); | |
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1185 GUARDED_VM_ENTRY(get_Method()->print_name(st);) |
| 0 | 1186 } |
| 1187 | |
| 1188 // ------------------------------------------------------------------ | |
| 1189 // ciMethod::print_short_name | |
| 1190 // | |
| 1191 // Print the name of this method, without signature. | |
| 1192 void ciMethod::print_short_name(outputStream* st) { | |
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1193 if (is_loaded()) { |
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1194 GUARDED_VM_ENTRY(get_Method()->print_short_name(st);); |
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1195 } else { |
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1196 // Fall back if method is not loaded. |
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1197 holder()->print_name_on(st); |
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1198 st->print("::"); |
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1199 name()->print_symbol_on(st); |
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1200 if (WizardMode) |
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1201 signature()->as_symbol()->print_symbol_on(st); |
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1202 } |
| 0 | 1203 } |
| 1204 | |
| 1205 // ------------------------------------------------------------------ | |
| 1206 // ciMethod::print_impl | |
| 1207 // | |
| 1208 // Implementation of the print method. | |
| 1209 void ciMethod::print_impl(outputStream* st) { | |
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1210 ciMetadata::print_impl(st); |
| 0 | 1211 st->print(" name="); |
| 1212 name()->print_symbol_on(st); | |
| 1213 st->print(" holder="); | |
| 1214 holder()->print_name_on(st); | |
| 1215 st->print(" signature="); | |
| 1216 signature()->as_symbol()->print_symbol_on(st); | |
| 1217 if (is_loaded()) { | |
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1218 st->print(" loaded=true"); |
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1219 st->print(" arg_size=%d", arg_size()); |
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1220 st->print(" flags="); |
| 0 | 1221 flags().print_member_flags(st); |
| 1222 } else { | |
| 1223 st->print(" loaded=false"); | |
| 1224 } | |
| 1225 } |