Fri, 08 Jan 2010 11:09:46 +0100
6914206: change way of permission checking for generated MethodHandle adapters
Summary: Put generated MH adapter in InvokeDynamic/MethodHandle classes to be able to indentify them easily in the compiler.
Reviewed-by: kvn, never, jrose
duke@435 | 1 | /* |
twisti@1587 | 2 | * Copyright 1999-2010 Sun Microsystems, Inc. All Rights Reserved. |
duke@435 | 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
duke@435 | 4 | * |
duke@435 | 5 | * This code is free software; you can redistribute it and/or modify it |
duke@435 | 6 | * under the terms of the GNU General Public License version 2 only, as |
duke@435 | 7 | * published by the Free Software Foundation. |
duke@435 | 8 | * |
duke@435 | 9 | * This code is distributed in the hope that it will be useful, but WITHOUT |
duke@435 | 10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
duke@435 | 11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
duke@435 | 12 | * version 2 for more details (a copy is included in the LICENSE file that |
duke@435 | 13 | * accompanied this code). |
duke@435 | 14 | * |
duke@435 | 15 | * You should have received a copy of the GNU General Public License version |
duke@435 | 16 | * 2 along with this work; if not, write to the Free Software Foundation, |
duke@435 | 17 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
duke@435 | 18 | * |
duke@435 | 19 | * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
duke@435 | 20 | * CA 95054 USA or visit www.sun.com if you need additional information or |
duke@435 | 21 | * have any questions. |
duke@435 | 22 | * |
duke@435 | 23 | */ |
duke@435 | 24 | |
duke@435 | 25 | #include "incls/_precompiled.incl" |
duke@435 | 26 | #include "incls/_ciMethod.cpp.incl" |
duke@435 | 27 | |
duke@435 | 28 | // ciMethod |
duke@435 | 29 | // |
duke@435 | 30 | // This class represents a methodOop in the HotSpot virtual |
duke@435 | 31 | // machine. |
duke@435 | 32 | |
duke@435 | 33 | |
duke@435 | 34 | // ------------------------------------------------------------------ |
duke@435 | 35 | // ciMethod::ciMethod |
duke@435 | 36 | // |
duke@435 | 37 | // Loaded method. |
duke@435 | 38 | ciMethod::ciMethod(methodHandle h_m) : ciObject(h_m) { |
duke@435 | 39 | assert(h_m() != NULL, "no null method"); |
duke@435 | 40 | |
duke@435 | 41 | // These fields are always filled in in loaded methods. |
duke@435 | 42 | _flags = ciFlags(h_m()->access_flags()); |
duke@435 | 43 | |
duke@435 | 44 | // Easy to compute, so fill them in now. |
duke@435 | 45 | _max_stack = h_m()->max_stack(); |
duke@435 | 46 | _max_locals = h_m()->max_locals(); |
duke@435 | 47 | _code_size = h_m()->code_size(); |
duke@435 | 48 | _intrinsic_id = h_m()->intrinsic_id(); |
duke@435 | 49 | _handler_count = h_m()->exception_table()->length() / 4; |
duke@435 | 50 | _uses_monitors = h_m()->access_flags().has_monitor_bytecodes(); |
duke@435 | 51 | _balanced_monitors = !_uses_monitors || h_m()->access_flags().is_monitor_matching(); |
duke@435 | 52 | _is_compilable = !h_m()->is_not_compilable(); |
duke@435 | 53 | // Lazy fields, filled in on demand. Require allocation. |
duke@435 | 54 | _code = NULL; |
duke@435 | 55 | _exception_handlers = NULL; |
duke@435 | 56 | _liveness = NULL; |
duke@435 | 57 | _bcea = NULL; |
duke@435 | 58 | _method_blocks = NULL; |
duke@435 | 59 | #ifdef COMPILER2 |
duke@435 | 60 | _flow = NULL; |
duke@435 | 61 | #endif // COMPILER2 |
duke@435 | 62 | |
kvn@1215 | 63 | ciEnv *env = CURRENT_ENV; |
kvn@1215 | 64 | if (env->jvmti_can_hotswap_or_post_breakpoint() && _is_compilable) { |
duke@435 | 65 | // 6328518 check hotswap conditions under the right lock. |
duke@435 | 66 | MutexLocker locker(Compile_lock); |
duke@435 | 67 | if (Dependencies::check_evol_method(h_m()) != NULL) { |
duke@435 | 68 | _is_compilable = false; |
duke@435 | 69 | } |
duke@435 | 70 | } else { |
duke@435 | 71 | CHECK_UNHANDLED_OOPS_ONLY(Thread::current()->clear_unhandled_oops()); |
duke@435 | 72 | } |
duke@435 | 73 | |
duke@435 | 74 | if (instanceKlass::cast(h_m()->method_holder())->is_linked()) { |
duke@435 | 75 | _can_be_statically_bound = h_m()->can_be_statically_bound(); |
duke@435 | 76 | } else { |
duke@435 | 77 | // Have to use a conservative value in this case. |
duke@435 | 78 | _can_be_statically_bound = false; |
duke@435 | 79 | } |
duke@435 | 80 | |
duke@435 | 81 | // Adjust the definition of this condition to be more useful: |
duke@435 | 82 | // %%% take these conditions into account in vtable generation |
duke@435 | 83 | if (!_can_be_statically_bound && h_m()->is_private()) |
duke@435 | 84 | _can_be_statically_bound = true; |
duke@435 | 85 | if (_can_be_statically_bound && h_m()->is_abstract()) |
duke@435 | 86 | _can_be_statically_bound = false; |
duke@435 | 87 | |
duke@435 | 88 | // generating _signature may allow GC and therefore move m. |
duke@435 | 89 | // These fields are always filled in. |
duke@435 | 90 | _name = env->get_object(h_m()->name())->as_symbol(); |
duke@435 | 91 | _holder = env->get_object(h_m()->method_holder())->as_instance_klass(); |
duke@435 | 92 | ciSymbol* sig_symbol = env->get_object(h_m()->signature())->as_symbol(); |
duke@435 | 93 | _signature = new (env->arena()) ciSignature(_holder, sig_symbol); |
duke@435 | 94 | _method_data = NULL; |
duke@435 | 95 | // Take a snapshot of these values, so they will be commensurate with the MDO. |
duke@435 | 96 | if (ProfileInterpreter) { |
duke@435 | 97 | int invcnt = h_m()->interpreter_invocation_count(); |
duke@435 | 98 | // if the value overflowed report it as max int |
duke@435 | 99 | _interpreter_invocation_count = invcnt < 0 ? max_jint : invcnt ; |
duke@435 | 100 | _interpreter_throwout_count = h_m()->interpreter_throwout_count(); |
duke@435 | 101 | } else { |
duke@435 | 102 | _interpreter_invocation_count = 0; |
duke@435 | 103 | _interpreter_throwout_count = 0; |
duke@435 | 104 | } |
duke@435 | 105 | if (_interpreter_invocation_count == 0) |
duke@435 | 106 | _interpreter_invocation_count = 1; |
duke@435 | 107 | } |
duke@435 | 108 | |
duke@435 | 109 | |
duke@435 | 110 | // ------------------------------------------------------------------ |
duke@435 | 111 | // ciMethod::ciMethod |
duke@435 | 112 | // |
duke@435 | 113 | // Unloaded method. |
duke@435 | 114 | ciMethod::ciMethod(ciInstanceKlass* holder, |
duke@435 | 115 | ciSymbol* name, |
duke@435 | 116 | ciSymbol* signature) : ciObject(ciMethodKlass::make()) { |
duke@435 | 117 | // These fields are always filled in. |
duke@435 | 118 | _name = name; |
duke@435 | 119 | _holder = holder; |
duke@435 | 120 | _signature = new (CURRENT_ENV->arena()) ciSignature(_holder, signature); |
duke@435 | 121 | _intrinsic_id = vmIntrinsics::_none; |
duke@435 | 122 | _liveness = NULL; |
duke@435 | 123 | _can_be_statically_bound = false; |
duke@435 | 124 | _bcea = NULL; |
duke@435 | 125 | _method_blocks = NULL; |
duke@435 | 126 | _method_data = NULL; |
duke@435 | 127 | #ifdef COMPILER2 |
duke@435 | 128 | _flow = NULL; |
duke@435 | 129 | #endif // COMPILER2 |
duke@435 | 130 | } |
duke@435 | 131 | |
duke@435 | 132 | |
duke@435 | 133 | // ------------------------------------------------------------------ |
duke@435 | 134 | // ciMethod::load_code |
duke@435 | 135 | // |
duke@435 | 136 | // Load the bytecodes and exception handler table for this method. |
duke@435 | 137 | void ciMethod::load_code() { |
duke@435 | 138 | VM_ENTRY_MARK; |
duke@435 | 139 | assert(is_loaded(), "only loaded methods have code"); |
duke@435 | 140 | |
duke@435 | 141 | methodOop me = get_methodOop(); |
duke@435 | 142 | Arena* arena = CURRENT_THREAD_ENV->arena(); |
duke@435 | 143 | |
duke@435 | 144 | // Load the bytecodes. |
duke@435 | 145 | _code = (address)arena->Amalloc(code_size()); |
duke@435 | 146 | memcpy(_code, me->code_base(), code_size()); |
duke@435 | 147 | |
duke@435 | 148 | // Revert any breakpoint bytecodes in ci's copy |
kvn@462 | 149 | if (me->number_of_breakpoints() > 0) { |
duke@435 | 150 | BreakpointInfo* bp = instanceKlass::cast(me->method_holder())->breakpoints(); |
duke@435 | 151 | for (; bp != NULL; bp = bp->next()) { |
duke@435 | 152 | if (bp->match(me)) { |
duke@435 | 153 | code_at_put(bp->bci(), bp->orig_bytecode()); |
duke@435 | 154 | } |
duke@435 | 155 | } |
duke@435 | 156 | } |
duke@435 | 157 | |
duke@435 | 158 | // And load the exception table. |
duke@435 | 159 | typeArrayOop exc_table = me->exception_table(); |
duke@435 | 160 | |
duke@435 | 161 | // Allocate one extra spot in our list of exceptions. This |
duke@435 | 162 | // last entry will be used to represent the possibility that |
duke@435 | 163 | // an exception escapes the method. See ciExceptionHandlerStream |
duke@435 | 164 | // for details. |
duke@435 | 165 | _exception_handlers = |
duke@435 | 166 | (ciExceptionHandler**)arena->Amalloc(sizeof(ciExceptionHandler*) |
duke@435 | 167 | * (_handler_count + 1)); |
duke@435 | 168 | if (_handler_count > 0) { |
duke@435 | 169 | for (int i=0; i<_handler_count; i++) { |
duke@435 | 170 | int base = i*4; |
duke@435 | 171 | _exception_handlers[i] = new (arena) ciExceptionHandler( |
duke@435 | 172 | holder(), |
duke@435 | 173 | /* start */ exc_table->int_at(base), |
duke@435 | 174 | /* limit */ exc_table->int_at(base+1), |
duke@435 | 175 | /* goto pc */ exc_table->int_at(base+2), |
duke@435 | 176 | /* cp index */ exc_table->int_at(base+3)); |
duke@435 | 177 | } |
duke@435 | 178 | } |
duke@435 | 179 | |
duke@435 | 180 | // Put an entry at the end of our list to represent the possibility |
duke@435 | 181 | // of exceptional exit. |
duke@435 | 182 | _exception_handlers[_handler_count] = |
duke@435 | 183 | new (arena) ciExceptionHandler(holder(), 0, code_size(), -1, 0); |
duke@435 | 184 | |
duke@435 | 185 | if (CIPrintMethodCodes) { |
duke@435 | 186 | print_codes(); |
duke@435 | 187 | } |
duke@435 | 188 | } |
duke@435 | 189 | |
duke@435 | 190 | |
duke@435 | 191 | // ------------------------------------------------------------------ |
duke@435 | 192 | // ciMethod::has_linenumber_table |
duke@435 | 193 | // |
duke@435 | 194 | // length unknown until decompression |
duke@435 | 195 | bool ciMethod::has_linenumber_table() const { |
duke@435 | 196 | check_is_loaded(); |
duke@435 | 197 | VM_ENTRY_MARK; |
duke@435 | 198 | return get_methodOop()->has_linenumber_table(); |
duke@435 | 199 | } |
duke@435 | 200 | |
duke@435 | 201 | |
duke@435 | 202 | // ------------------------------------------------------------------ |
duke@435 | 203 | // ciMethod::compressed_linenumber_table |
duke@435 | 204 | u_char* ciMethod::compressed_linenumber_table() const { |
duke@435 | 205 | check_is_loaded(); |
duke@435 | 206 | VM_ENTRY_MARK; |
duke@435 | 207 | return get_methodOop()->compressed_linenumber_table(); |
duke@435 | 208 | } |
duke@435 | 209 | |
duke@435 | 210 | |
duke@435 | 211 | // ------------------------------------------------------------------ |
duke@435 | 212 | // ciMethod::line_number_from_bci |
duke@435 | 213 | int ciMethod::line_number_from_bci(int bci) const { |
duke@435 | 214 | check_is_loaded(); |
duke@435 | 215 | VM_ENTRY_MARK; |
duke@435 | 216 | return get_methodOop()->line_number_from_bci(bci); |
duke@435 | 217 | } |
duke@435 | 218 | |
duke@435 | 219 | |
duke@435 | 220 | // ------------------------------------------------------------------ |
duke@435 | 221 | // ciMethod::vtable_index |
duke@435 | 222 | // |
duke@435 | 223 | // Get the position of this method's entry in the vtable, if any. |
duke@435 | 224 | int ciMethod::vtable_index() { |
duke@435 | 225 | check_is_loaded(); |
duke@435 | 226 | assert(holder()->is_linked(), "must be linked"); |
duke@435 | 227 | VM_ENTRY_MARK; |
duke@435 | 228 | return get_methodOop()->vtable_index(); |
duke@435 | 229 | } |
duke@435 | 230 | |
duke@435 | 231 | |
duke@435 | 232 | // ------------------------------------------------------------------ |
duke@435 | 233 | // ciMethod::native_entry |
duke@435 | 234 | // |
duke@435 | 235 | // Get the address of this method's native code, if any. |
duke@435 | 236 | address ciMethod::native_entry() { |
duke@435 | 237 | check_is_loaded(); |
duke@435 | 238 | assert(flags().is_native(), "must be native method"); |
duke@435 | 239 | VM_ENTRY_MARK; |
duke@435 | 240 | methodOop method = get_methodOop(); |
duke@435 | 241 | address entry = method->native_function(); |
duke@435 | 242 | assert(entry != NULL, "must be valid entry point"); |
duke@435 | 243 | return entry; |
duke@435 | 244 | } |
duke@435 | 245 | |
duke@435 | 246 | |
duke@435 | 247 | // ------------------------------------------------------------------ |
duke@435 | 248 | // ciMethod::interpreter_entry |
duke@435 | 249 | // |
duke@435 | 250 | // Get the entry point for running this method in the interpreter. |
duke@435 | 251 | address ciMethod::interpreter_entry() { |
duke@435 | 252 | check_is_loaded(); |
duke@435 | 253 | VM_ENTRY_MARK; |
duke@435 | 254 | methodHandle mh(THREAD, get_methodOop()); |
duke@435 | 255 | return Interpreter::entry_for_method(mh); |
duke@435 | 256 | } |
duke@435 | 257 | |
duke@435 | 258 | |
duke@435 | 259 | // ------------------------------------------------------------------ |
duke@435 | 260 | // ciMethod::uses_balanced_monitors |
duke@435 | 261 | // |
duke@435 | 262 | // Does this method use monitors in a strict stack-disciplined manner? |
duke@435 | 263 | bool ciMethod::has_balanced_monitors() { |
duke@435 | 264 | check_is_loaded(); |
duke@435 | 265 | if (_balanced_monitors) return true; |
duke@435 | 266 | |
duke@435 | 267 | // Analyze the method to see if monitors are used properly. |
duke@435 | 268 | VM_ENTRY_MARK; |
duke@435 | 269 | methodHandle method(THREAD, get_methodOop()); |
duke@435 | 270 | assert(method->has_monitor_bytecodes(), "should have checked this"); |
duke@435 | 271 | |
duke@435 | 272 | // Check to see if a previous compilation computed the |
duke@435 | 273 | // monitor-matching analysis. |
duke@435 | 274 | if (method->guaranteed_monitor_matching()) { |
duke@435 | 275 | _balanced_monitors = true; |
duke@435 | 276 | return true; |
duke@435 | 277 | } |
duke@435 | 278 | |
duke@435 | 279 | { |
duke@435 | 280 | EXCEPTION_MARK; |
duke@435 | 281 | ResourceMark rm(THREAD); |
duke@435 | 282 | GeneratePairingInfo gpi(method); |
duke@435 | 283 | gpi.compute_map(CATCH); |
duke@435 | 284 | if (!gpi.monitor_safe()) { |
duke@435 | 285 | return false; |
duke@435 | 286 | } |
duke@435 | 287 | method->set_guaranteed_monitor_matching(); |
duke@435 | 288 | _balanced_monitors = true; |
duke@435 | 289 | } |
duke@435 | 290 | return true; |
duke@435 | 291 | } |
duke@435 | 292 | |
duke@435 | 293 | |
duke@435 | 294 | // ------------------------------------------------------------------ |
duke@435 | 295 | // ciMethod::get_flow_analysis |
duke@435 | 296 | ciTypeFlow* ciMethod::get_flow_analysis() { |
duke@435 | 297 | #ifdef COMPILER2 |
duke@435 | 298 | if (_flow == NULL) { |
duke@435 | 299 | ciEnv* env = CURRENT_ENV; |
duke@435 | 300 | _flow = new (env->arena()) ciTypeFlow(env, this); |
duke@435 | 301 | _flow->do_flow(); |
duke@435 | 302 | } |
duke@435 | 303 | return _flow; |
duke@435 | 304 | #else // COMPILER2 |
duke@435 | 305 | ShouldNotReachHere(); |
duke@435 | 306 | return NULL; |
duke@435 | 307 | #endif // COMPILER2 |
duke@435 | 308 | } |
duke@435 | 309 | |
duke@435 | 310 | |
duke@435 | 311 | // ------------------------------------------------------------------ |
duke@435 | 312 | // ciMethod::get_osr_flow_analysis |
duke@435 | 313 | ciTypeFlow* ciMethod::get_osr_flow_analysis(int osr_bci) { |
duke@435 | 314 | #ifdef COMPILER2 |
duke@435 | 315 | // OSR entry points are always place after a call bytecode of some sort |
duke@435 | 316 | assert(osr_bci >= 0, "must supply valid OSR entry point"); |
duke@435 | 317 | ciEnv* env = CURRENT_ENV; |
duke@435 | 318 | ciTypeFlow* flow = new (env->arena()) ciTypeFlow(env, this, osr_bci); |
duke@435 | 319 | flow->do_flow(); |
duke@435 | 320 | return flow; |
duke@435 | 321 | #else // COMPILER2 |
duke@435 | 322 | ShouldNotReachHere(); |
duke@435 | 323 | return NULL; |
duke@435 | 324 | #endif // COMPILER2 |
duke@435 | 325 | } |
duke@435 | 326 | |
duke@435 | 327 | // ------------------------------------------------------------------ |
never@1426 | 328 | // ciMethod::raw_liveness_at_bci |
duke@435 | 329 | // |
duke@435 | 330 | // Which local variables are live at a specific bci? |
never@1426 | 331 | MethodLivenessResult ciMethod::raw_liveness_at_bci(int bci) { |
duke@435 | 332 | check_is_loaded(); |
duke@435 | 333 | if (_liveness == NULL) { |
duke@435 | 334 | // Create the liveness analyzer. |
duke@435 | 335 | Arena* arena = CURRENT_ENV->arena(); |
duke@435 | 336 | _liveness = new (arena) MethodLiveness(arena, this); |
duke@435 | 337 | _liveness->compute_liveness(); |
duke@435 | 338 | } |
never@1426 | 339 | return _liveness->get_liveness_at(bci); |
never@1426 | 340 | } |
never@1426 | 341 | |
never@1426 | 342 | // ------------------------------------------------------------------ |
never@1426 | 343 | // ciMethod::liveness_at_bci |
never@1426 | 344 | // |
never@1426 | 345 | // Which local variables are live at a specific bci? When debugging |
never@1426 | 346 | // will return true for all locals in some cases to improve debug |
never@1426 | 347 | // information. |
never@1426 | 348 | MethodLivenessResult ciMethod::liveness_at_bci(int bci) { |
never@1426 | 349 | MethodLivenessResult result = raw_liveness_at_bci(bci); |
kvn@1215 | 350 | if (CURRENT_ENV->jvmti_can_access_local_variables() || DeoptimizeALot || CompileTheWorld) { |
duke@435 | 351 | // Keep all locals live for the user's edification and amusement. |
duke@435 | 352 | result.at_put_range(0, result.size(), true); |
duke@435 | 353 | } |
duke@435 | 354 | return result; |
duke@435 | 355 | } |
duke@435 | 356 | |
duke@435 | 357 | // ciMethod::live_local_oops_at_bci |
duke@435 | 358 | // |
duke@435 | 359 | // find all the live oops in the locals array for a particular bci |
duke@435 | 360 | // Compute what the interpreter believes by using the interpreter |
duke@435 | 361 | // oopmap generator. This is used as a double check during osr to |
duke@435 | 362 | // guard against conservative result from MethodLiveness making us |
duke@435 | 363 | // think a dead oop is live. MethodLiveness is conservative in the |
duke@435 | 364 | // sense that it may consider locals to be live which cannot be live, |
duke@435 | 365 | // like in the case where a local could contain an oop or a primitive |
duke@435 | 366 | // along different paths. In that case the local must be dead when |
duke@435 | 367 | // those paths merge. Since the interpreter's viewpoint is used when |
duke@435 | 368 | // gc'ing an interpreter frame we need to use its viewpoint during |
duke@435 | 369 | // OSR when loading the locals. |
duke@435 | 370 | |
duke@435 | 371 | BitMap ciMethod::live_local_oops_at_bci(int bci) { |
duke@435 | 372 | VM_ENTRY_MARK; |
duke@435 | 373 | InterpreterOopMap mask; |
duke@435 | 374 | OopMapCache::compute_one_oop_map(get_methodOop(), bci, &mask); |
duke@435 | 375 | int mask_size = max_locals(); |
duke@435 | 376 | BitMap result(mask_size); |
duke@435 | 377 | result.clear(); |
duke@435 | 378 | int i; |
duke@435 | 379 | for (i = 0; i < mask_size ; i++ ) { |
duke@435 | 380 | if (mask.is_oop(i)) result.set_bit(i); |
duke@435 | 381 | } |
duke@435 | 382 | return result; |
duke@435 | 383 | } |
duke@435 | 384 | |
duke@435 | 385 | |
duke@435 | 386 | #ifdef COMPILER1 |
duke@435 | 387 | // ------------------------------------------------------------------ |
duke@435 | 388 | // ciMethod::bci_block_start |
duke@435 | 389 | // |
duke@435 | 390 | // Marks all bcis where a new basic block starts |
duke@435 | 391 | const BitMap ciMethod::bci_block_start() { |
duke@435 | 392 | check_is_loaded(); |
duke@435 | 393 | if (_liveness == NULL) { |
duke@435 | 394 | // Create the liveness analyzer. |
duke@435 | 395 | Arena* arena = CURRENT_ENV->arena(); |
duke@435 | 396 | _liveness = new (arena) MethodLiveness(arena, this); |
duke@435 | 397 | _liveness->compute_liveness(); |
duke@435 | 398 | } |
duke@435 | 399 | |
duke@435 | 400 | return _liveness->get_bci_block_start(); |
duke@435 | 401 | } |
duke@435 | 402 | #endif // COMPILER1 |
duke@435 | 403 | |
duke@435 | 404 | |
duke@435 | 405 | // ------------------------------------------------------------------ |
duke@435 | 406 | // ciMethod::call_profile_at_bci |
duke@435 | 407 | // |
duke@435 | 408 | // Get the ciCallProfile for the invocation of this method. |
duke@435 | 409 | // Also reports receiver types for non-call type checks (if TypeProfileCasts). |
duke@435 | 410 | ciCallProfile ciMethod::call_profile_at_bci(int bci) { |
duke@435 | 411 | ResourceMark rm; |
duke@435 | 412 | ciCallProfile result; |
duke@435 | 413 | if (method_data() != NULL && method_data()->is_mature()) { |
duke@435 | 414 | ciProfileData* data = method_data()->bci_to_data(bci); |
duke@435 | 415 | if (data != NULL && data->is_CounterData()) { |
duke@435 | 416 | // Every profiled call site has a counter. |
duke@435 | 417 | int count = data->as_CounterData()->count(); |
duke@435 | 418 | |
duke@435 | 419 | if (!data->is_ReceiverTypeData()) { |
duke@435 | 420 | result._receiver_count[0] = 0; // that's a definite zero |
duke@435 | 421 | } else { // ReceiverTypeData is a subclass of CounterData |
duke@435 | 422 | ciReceiverTypeData* call = (ciReceiverTypeData*)data->as_ReceiverTypeData(); |
duke@435 | 423 | // In addition, virtual call sites have receiver type information |
duke@435 | 424 | int receivers_count_total = 0; |
duke@435 | 425 | int morphism = 0; |
duke@435 | 426 | for (uint i = 0; i < call->row_limit(); i++) { |
duke@435 | 427 | ciKlass* receiver = call->receiver(i); |
duke@435 | 428 | if (receiver == NULL) continue; |
duke@435 | 429 | morphism += 1; |
duke@435 | 430 | int rcount = call->receiver_count(i); |
duke@435 | 431 | if (rcount == 0) rcount = 1; // Should be valid value |
duke@435 | 432 | receivers_count_total += rcount; |
duke@435 | 433 | // Add the receiver to result data. |
duke@435 | 434 | result.add_receiver(receiver, rcount); |
duke@435 | 435 | // If we extend profiling to record methods, |
duke@435 | 436 | // we will set result._method also. |
duke@435 | 437 | } |
duke@435 | 438 | // Determine call site's morphism. |
duke@435 | 439 | // The call site count could be == (receivers_count_total + 1) |
duke@435 | 440 | // not only in the case of a polymorphic call but also in the case |
duke@435 | 441 | // when a method data snapshot is taken after the site count was updated |
duke@435 | 442 | // but before receivers counters were updated. |
duke@435 | 443 | if (morphism == result._limit) { |
duke@435 | 444 | // There were no array klasses and morphism <= MorphismLimit. |
duke@435 | 445 | if (morphism < ciCallProfile::MorphismLimit || |
duke@435 | 446 | morphism == ciCallProfile::MorphismLimit && |
duke@435 | 447 | (receivers_count_total+1) >= count) { |
duke@435 | 448 | result._morphism = morphism; |
duke@435 | 449 | } |
duke@435 | 450 | } |
duke@435 | 451 | // Make the count consistent if this is a call profile. If count is |
duke@435 | 452 | // zero or less, presume that this is a typecheck profile and |
duke@435 | 453 | // do nothing. Otherwise, increase count to be the sum of all |
duke@435 | 454 | // receiver's counts. |
duke@435 | 455 | if (count > 0) { |
duke@435 | 456 | if (count < receivers_count_total) { |
duke@435 | 457 | count = receivers_count_total; |
duke@435 | 458 | } |
duke@435 | 459 | } |
duke@435 | 460 | } |
duke@435 | 461 | result._count = count; |
duke@435 | 462 | } |
duke@435 | 463 | } |
duke@435 | 464 | return result; |
duke@435 | 465 | } |
duke@435 | 466 | |
duke@435 | 467 | // ------------------------------------------------------------------ |
duke@435 | 468 | // Add new receiver and sort data by receiver's profile count. |
duke@435 | 469 | void ciCallProfile::add_receiver(ciKlass* receiver, int receiver_count) { |
duke@435 | 470 | // Add new receiver and sort data by receiver's counts when we have space |
duke@435 | 471 | // for it otherwise replace the less called receiver (less called receiver |
duke@435 | 472 | // is placed to the last array element which is not used). |
duke@435 | 473 | // First array's element contains most called receiver. |
duke@435 | 474 | int i = _limit; |
duke@435 | 475 | for (; i > 0 && receiver_count > _receiver_count[i-1]; i--) { |
duke@435 | 476 | _receiver[i] = _receiver[i-1]; |
duke@435 | 477 | _receiver_count[i] = _receiver_count[i-1]; |
duke@435 | 478 | } |
duke@435 | 479 | _receiver[i] = receiver; |
duke@435 | 480 | _receiver_count[i] = receiver_count; |
duke@435 | 481 | if (_limit < MorphismLimit) _limit++; |
duke@435 | 482 | } |
duke@435 | 483 | |
duke@435 | 484 | // ------------------------------------------------------------------ |
duke@435 | 485 | // ciMethod::find_monomorphic_target |
duke@435 | 486 | // |
duke@435 | 487 | // Given a certain calling environment, find the monomorphic target |
duke@435 | 488 | // for the call. Return NULL if the call is not monomorphic in |
duke@435 | 489 | // its calling environment, or if there are only abstract methods. |
duke@435 | 490 | // The returned method is never abstract. |
duke@435 | 491 | // Note: If caller uses a non-null result, it must inform dependencies |
duke@435 | 492 | // via assert_unique_concrete_method or assert_leaf_type. |
duke@435 | 493 | ciMethod* ciMethod::find_monomorphic_target(ciInstanceKlass* caller, |
duke@435 | 494 | ciInstanceKlass* callee_holder, |
duke@435 | 495 | ciInstanceKlass* actual_recv) { |
duke@435 | 496 | check_is_loaded(); |
duke@435 | 497 | |
duke@435 | 498 | if (actual_recv->is_interface()) { |
duke@435 | 499 | // %%% We cannot trust interface types, yet. See bug 6312651. |
duke@435 | 500 | return NULL; |
duke@435 | 501 | } |
duke@435 | 502 | |
duke@435 | 503 | ciMethod* root_m = resolve_invoke(caller, actual_recv); |
duke@435 | 504 | if (root_m == NULL) { |
duke@435 | 505 | // Something went wrong looking up the actual receiver method. |
duke@435 | 506 | return NULL; |
duke@435 | 507 | } |
duke@435 | 508 | assert(!root_m->is_abstract(), "resolve_invoke promise"); |
duke@435 | 509 | |
duke@435 | 510 | // Make certain quick checks even if UseCHA is false. |
duke@435 | 511 | |
duke@435 | 512 | // Is it private or final? |
duke@435 | 513 | if (root_m->can_be_statically_bound()) { |
duke@435 | 514 | return root_m; |
duke@435 | 515 | } |
duke@435 | 516 | |
duke@435 | 517 | if (actual_recv->is_leaf_type() && actual_recv == root_m->holder()) { |
duke@435 | 518 | // Easy case. There is no other place to put a method, so don't bother |
duke@435 | 519 | // to go through the VM_ENTRY_MARK and all the rest. |
duke@435 | 520 | return root_m; |
duke@435 | 521 | } |
duke@435 | 522 | |
duke@435 | 523 | // Array methods (clone, hashCode, etc.) are always statically bound. |
duke@435 | 524 | // If we were to see an array type here, we'd return root_m. |
duke@435 | 525 | // However, this method processes only ciInstanceKlasses. (See 4962591.) |
duke@435 | 526 | // The inline_native_clone intrinsic narrows Object to T[] properly, |
duke@435 | 527 | // so there is no need to do the same job here. |
duke@435 | 528 | |
duke@435 | 529 | if (!UseCHA) return NULL; |
duke@435 | 530 | |
duke@435 | 531 | VM_ENTRY_MARK; |
duke@435 | 532 | |
duke@435 | 533 | methodHandle target; |
duke@435 | 534 | { |
duke@435 | 535 | MutexLocker locker(Compile_lock); |
duke@435 | 536 | klassOop context = actual_recv->get_klassOop(); |
duke@435 | 537 | target = Dependencies::find_unique_concrete_method(context, |
duke@435 | 538 | root_m->get_methodOop()); |
duke@435 | 539 | // %%% Should upgrade this ciMethod API to look for 1 or 2 concrete methods. |
duke@435 | 540 | } |
duke@435 | 541 | |
duke@435 | 542 | #ifndef PRODUCT |
duke@435 | 543 | if (TraceDependencies && target() != NULL && target() != root_m->get_methodOop()) { |
duke@435 | 544 | tty->print("found a non-root unique target method"); |
duke@435 | 545 | tty->print_cr(" context = %s", instanceKlass::cast(actual_recv->get_klassOop())->external_name()); |
duke@435 | 546 | tty->print(" method = "); |
duke@435 | 547 | target->print_short_name(tty); |
duke@435 | 548 | tty->cr(); |
duke@435 | 549 | } |
duke@435 | 550 | #endif //PRODUCT |
duke@435 | 551 | |
duke@435 | 552 | if (target() == NULL) { |
duke@435 | 553 | return NULL; |
duke@435 | 554 | } |
duke@435 | 555 | if (target() == root_m->get_methodOop()) { |
duke@435 | 556 | return root_m; |
duke@435 | 557 | } |
duke@435 | 558 | if (!root_m->is_public() && |
duke@435 | 559 | !root_m->is_protected()) { |
duke@435 | 560 | // If we are going to reason about inheritance, it's easiest |
duke@435 | 561 | // if the method in question is public, protected, or private. |
duke@435 | 562 | // If the answer is not root_m, it is conservatively correct |
duke@435 | 563 | // to return NULL, even if the CHA encountered irrelevant |
duke@435 | 564 | // methods in other packages. |
duke@435 | 565 | // %%% TO DO: Work out logic for package-private methods |
duke@435 | 566 | // with the same name but different vtable indexes. |
duke@435 | 567 | return NULL; |
duke@435 | 568 | } |
duke@435 | 569 | return CURRENT_THREAD_ENV->get_object(target())->as_method(); |
duke@435 | 570 | } |
duke@435 | 571 | |
duke@435 | 572 | // ------------------------------------------------------------------ |
duke@435 | 573 | // ciMethod::resolve_invoke |
duke@435 | 574 | // |
duke@435 | 575 | // Given a known receiver klass, find the target for the call. |
duke@435 | 576 | // Return NULL if the call has no target or the target is abstract. |
duke@435 | 577 | ciMethod* ciMethod::resolve_invoke(ciKlass* caller, ciKlass* exact_receiver) { |
duke@435 | 578 | check_is_loaded(); |
duke@435 | 579 | VM_ENTRY_MARK; |
duke@435 | 580 | |
duke@435 | 581 | KlassHandle caller_klass (THREAD, caller->get_klassOop()); |
duke@435 | 582 | KlassHandle h_recv (THREAD, exact_receiver->get_klassOop()); |
duke@435 | 583 | KlassHandle h_resolved (THREAD, holder()->get_klassOop()); |
duke@435 | 584 | symbolHandle h_name (THREAD, name()->get_symbolOop()); |
duke@435 | 585 | symbolHandle h_signature (THREAD, signature()->get_symbolOop()); |
duke@435 | 586 | |
duke@435 | 587 | methodHandle m; |
duke@435 | 588 | // Only do exact lookup if receiver klass has been linked. Otherwise, |
duke@435 | 589 | // the vtable has not been setup, and the LinkResolver will fail. |
duke@435 | 590 | if (h_recv->oop_is_javaArray() |
duke@435 | 591 | || |
duke@435 | 592 | instanceKlass::cast(h_recv())->is_linked() && !exact_receiver->is_interface()) { |
duke@435 | 593 | if (holder()->is_interface()) { |
duke@435 | 594 | m = LinkResolver::resolve_interface_call_or_null(h_recv, h_resolved, h_name, h_signature, caller_klass); |
duke@435 | 595 | } else { |
duke@435 | 596 | m = LinkResolver::resolve_virtual_call_or_null(h_recv, h_resolved, h_name, h_signature, caller_klass); |
duke@435 | 597 | } |
duke@435 | 598 | } |
duke@435 | 599 | |
duke@435 | 600 | if (m.is_null()) { |
duke@435 | 601 | // Return NULL only if there was a problem with lookup (uninitialized class, etc.) |
duke@435 | 602 | return NULL; |
duke@435 | 603 | } |
duke@435 | 604 | |
duke@435 | 605 | ciMethod* result = this; |
duke@435 | 606 | if (m() != get_methodOop()) { |
duke@435 | 607 | result = CURRENT_THREAD_ENV->get_object(m())->as_method(); |
duke@435 | 608 | } |
duke@435 | 609 | |
duke@435 | 610 | // Don't return abstract methods because they aren't |
duke@435 | 611 | // optimizable or interesting. |
duke@435 | 612 | if (result->is_abstract()) { |
duke@435 | 613 | return NULL; |
duke@435 | 614 | } else { |
duke@435 | 615 | return result; |
duke@435 | 616 | } |
duke@435 | 617 | } |
duke@435 | 618 | |
duke@435 | 619 | // ------------------------------------------------------------------ |
duke@435 | 620 | // ciMethod::resolve_vtable_index |
duke@435 | 621 | // |
duke@435 | 622 | // Given a known receiver klass, find the vtable index for the call. |
duke@435 | 623 | // Return methodOopDesc::invalid_vtable_index if the vtable_index is unknown. |
duke@435 | 624 | int ciMethod::resolve_vtable_index(ciKlass* caller, ciKlass* receiver) { |
duke@435 | 625 | check_is_loaded(); |
duke@435 | 626 | |
duke@435 | 627 | int vtable_index = methodOopDesc::invalid_vtable_index; |
duke@435 | 628 | // Only do lookup if receiver klass has been linked. Otherwise, |
duke@435 | 629 | // the vtable has not been setup, and the LinkResolver will fail. |
duke@435 | 630 | if (!receiver->is_interface() |
duke@435 | 631 | && (!receiver->is_instance_klass() || |
duke@435 | 632 | receiver->as_instance_klass()->is_linked())) { |
duke@435 | 633 | VM_ENTRY_MARK; |
duke@435 | 634 | |
duke@435 | 635 | KlassHandle caller_klass (THREAD, caller->get_klassOop()); |
duke@435 | 636 | KlassHandle h_recv (THREAD, receiver->get_klassOop()); |
duke@435 | 637 | symbolHandle h_name (THREAD, name()->get_symbolOop()); |
duke@435 | 638 | symbolHandle h_signature (THREAD, signature()->get_symbolOop()); |
duke@435 | 639 | |
duke@435 | 640 | vtable_index = LinkResolver::resolve_virtual_vtable_index(h_recv, h_recv, h_name, h_signature, caller_klass); |
duke@435 | 641 | if (vtable_index == methodOopDesc::nonvirtual_vtable_index) { |
duke@435 | 642 | // A statically bound method. Return "no such index". |
duke@435 | 643 | vtable_index = methodOopDesc::invalid_vtable_index; |
duke@435 | 644 | } |
duke@435 | 645 | } |
duke@435 | 646 | |
duke@435 | 647 | return vtable_index; |
duke@435 | 648 | } |
duke@435 | 649 | |
duke@435 | 650 | // ------------------------------------------------------------------ |
duke@435 | 651 | // ciMethod::interpreter_call_site_count |
duke@435 | 652 | int ciMethod::interpreter_call_site_count(int bci) { |
duke@435 | 653 | if (method_data() != NULL) { |
duke@435 | 654 | ResourceMark rm; |
duke@435 | 655 | ciProfileData* data = method_data()->bci_to_data(bci); |
duke@435 | 656 | if (data != NULL && data->is_CounterData()) { |
duke@435 | 657 | return scale_count(data->as_CounterData()->count()); |
duke@435 | 658 | } |
duke@435 | 659 | } |
duke@435 | 660 | return -1; // unknown |
duke@435 | 661 | } |
duke@435 | 662 | |
duke@435 | 663 | // ------------------------------------------------------------------ |
duke@435 | 664 | // Adjust a CounterData count to be commensurate with |
duke@435 | 665 | // interpreter_invocation_count. If the MDO exists for |
duke@435 | 666 | // only 25% of the time the method exists, then the |
duke@435 | 667 | // counts in the MDO should be scaled by 4X, so that |
duke@435 | 668 | // they can be usefully and stably compared against the |
duke@435 | 669 | // invocation counts in methods. |
duke@435 | 670 | int ciMethod::scale_count(int count, float prof_factor) { |
duke@435 | 671 | if (count > 0 && method_data() != NULL) { |
duke@435 | 672 | int current_mileage = method_data()->current_mileage(); |
duke@435 | 673 | int creation_mileage = method_data()->creation_mileage(); |
duke@435 | 674 | int counter_life = current_mileage - creation_mileage; |
duke@435 | 675 | int method_life = interpreter_invocation_count(); |
duke@435 | 676 | // counter_life due to backedge_counter could be > method_life |
duke@435 | 677 | if (counter_life > method_life) |
duke@435 | 678 | counter_life = method_life; |
duke@435 | 679 | if (0 < counter_life && counter_life <= method_life) { |
duke@435 | 680 | count = (int)((double)count * prof_factor * method_life / counter_life + 0.5); |
duke@435 | 681 | count = (count > 0) ? count : 1; |
duke@435 | 682 | } |
duke@435 | 683 | } |
duke@435 | 684 | return count; |
duke@435 | 685 | } |
duke@435 | 686 | |
duke@435 | 687 | // ------------------------------------------------------------------ |
jrose@1145 | 688 | // invokedynamic support |
jrose@1145 | 689 | // |
twisti@1572 | 690 | bool ciMethod::is_method_handle_invoke() const { |
jrose@1145 | 691 | check_is_loaded(); |
jrose@1145 | 692 | bool flag = ((flags().as_int() & JVM_MH_INVOKE_BITS) == JVM_MH_INVOKE_BITS); |
jrose@1145 | 693 | #ifdef ASSERT |
jrose@1145 | 694 | { |
jrose@1145 | 695 | VM_ENTRY_MARK; |
jrose@1145 | 696 | bool flag2 = get_methodOop()->is_method_handle_invoke(); |
jrose@1145 | 697 | assert(flag == flag2, "consistent"); |
jrose@1145 | 698 | } |
jrose@1145 | 699 | #endif //ASSERT |
jrose@1145 | 700 | return flag; |
jrose@1145 | 701 | } |
jrose@1145 | 702 | |
twisti@1587 | 703 | bool ciMethod::is_method_handle_adapter() const { |
twisti@1587 | 704 | check_is_loaded(); |
twisti@1587 | 705 | VM_ENTRY_MARK; |
twisti@1587 | 706 | return get_methodOop()->is_method_handle_adapter(); |
twisti@1587 | 707 | } |
twisti@1587 | 708 | |
jrose@1145 | 709 | ciInstance* ciMethod::method_handle_type() { |
jrose@1145 | 710 | check_is_loaded(); |
jrose@1145 | 711 | VM_ENTRY_MARK; |
jrose@1145 | 712 | oop mtype = get_methodOop()->method_handle_type(); |
jrose@1145 | 713 | return CURRENT_THREAD_ENV->get_object(mtype)->as_instance(); |
jrose@1145 | 714 | } |
jrose@1145 | 715 | |
jrose@1145 | 716 | |
jrose@1145 | 717 | // ------------------------------------------------------------------ |
duke@435 | 718 | // ciMethod::build_method_data |
duke@435 | 719 | // |
duke@435 | 720 | // Generate new methodDataOop objects at compile time. |
duke@435 | 721 | void ciMethod::build_method_data(methodHandle h_m) { |
duke@435 | 722 | EXCEPTION_CONTEXT; |
duke@435 | 723 | if (is_native() || is_abstract() || h_m()->is_accessor()) return; |
duke@435 | 724 | if (h_m()->method_data() == NULL) { |
duke@435 | 725 | methodOopDesc::build_interpreter_method_data(h_m, THREAD); |
duke@435 | 726 | if (HAS_PENDING_EXCEPTION) { |
duke@435 | 727 | CLEAR_PENDING_EXCEPTION; |
duke@435 | 728 | } |
duke@435 | 729 | } |
duke@435 | 730 | if (h_m()->method_data() != NULL) { |
duke@435 | 731 | _method_data = CURRENT_ENV->get_object(h_m()->method_data())->as_method_data(); |
duke@435 | 732 | _method_data->load_data(); |
duke@435 | 733 | } else { |
duke@435 | 734 | _method_data = CURRENT_ENV->get_empty_methodData(); |
duke@435 | 735 | } |
duke@435 | 736 | } |
duke@435 | 737 | |
duke@435 | 738 | // public, retroactive version |
duke@435 | 739 | void ciMethod::build_method_data() { |
duke@435 | 740 | if (_method_data == NULL || _method_data->is_empty()) { |
duke@435 | 741 | GUARDED_VM_ENTRY({ |
duke@435 | 742 | build_method_data(get_methodOop()); |
duke@435 | 743 | }); |
duke@435 | 744 | } |
duke@435 | 745 | } |
duke@435 | 746 | |
duke@435 | 747 | |
duke@435 | 748 | // ------------------------------------------------------------------ |
duke@435 | 749 | // ciMethod::method_data |
duke@435 | 750 | // |
duke@435 | 751 | ciMethodData* ciMethod::method_data() { |
duke@435 | 752 | if (_method_data != NULL) { |
duke@435 | 753 | return _method_data; |
duke@435 | 754 | } |
duke@435 | 755 | VM_ENTRY_MARK; |
duke@435 | 756 | ciEnv* env = CURRENT_ENV; |
duke@435 | 757 | Thread* my_thread = JavaThread::current(); |
duke@435 | 758 | methodHandle h_m(my_thread, get_methodOop()); |
duke@435 | 759 | |
duke@435 | 760 | if (Tier1UpdateMethodData && is_tier1_compile(env->comp_level())) { |
duke@435 | 761 | build_method_data(h_m); |
duke@435 | 762 | } |
duke@435 | 763 | |
duke@435 | 764 | if (h_m()->method_data() != NULL) { |
duke@435 | 765 | _method_data = CURRENT_ENV->get_object(h_m()->method_data())->as_method_data(); |
duke@435 | 766 | _method_data->load_data(); |
duke@435 | 767 | } else { |
duke@435 | 768 | _method_data = CURRENT_ENV->get_empty_methodData(); |
duke@435 | 769 | } |
duke@435 | 770 | return _method_data; |
duke@435 | 771 | |
duke@435 | 772 | } |
duke@435 | 773 | |
duke@435 | 774 | |
duke@435 | 775 | // ------------------------------------------------------------------ |
duke@435 | 776 | // ciMethod::will_link |
duke@435 | 777 | // |
duke@435 | 778 | // Will this method link in a specific calling context? |
duke@435 | 779 | bool ciMethod::will_link(ciKlass* accessing_klass, |
duke@435 | 780 | ciKlass* declared_method_holder, |
duke@435 | 781 | Bytecodes::Code bc) { |
duke@435 | 782 | if (!is_loaded()) { |
duke@435 | 783 | // Method lookup failed. |
duke@435 | 784 | return false; |
duke@435 | 785 | } |
duke@435 | 786 | |
duke@435 | 787 | // The link checks have been front-loaded into the get_method |
duke@435 | 788 | // call. This method (ciMethod::will_link()) will be removed |
duke@435 | 789 | // in the future. |
duke@435 | 790 | |
duke@435 | 791 | return true; |
duke@435 | 792 | } |
duke@435 | 793 | |
duke@435 | 794 | // ------------------------------------------------------------------ |
duke@435 | 795 | // ciMethod::should_exclude |
duke@435 | 796 | // |
duke@435 | 797 | // Should this method be excluded from compilation? |
duke@435 | 798 | bool ciMethod::should_exclude() { |
duke@435 | 799 | check_is_loaded(); |
duke@435 | 800 | VM_ENTRY_MARK; |
duke@435 | 801 | methodHandle mh(THREAD, get_methodOop()); |
duke@435 | 802 | bool ignore; |
duke@435 | 803 | return CompilerOracle::should_exclude(mh, ignore); |
duke@435 | 804 | } |
duke@435 | 805 | |
duke@435 | 806 | // ------------------------------------------------------------------ |
duke@435 | 807 | // ciMethod::should_inline |
duke@435 | 808 | // |
duke@435 | 809 | // Should this method be inlined during compilation? |
duke@435 | 810 | bool ciMethod::should_inline() { |
duke@435 | 811 | check_is_loaded(); |
duke@435 | 812 | VM_ENTRY_MARK; |
duke@435 | 813 | methodHandle mh(THREAD, get_methodOop()); |
duke@435 | 814 | return CompilerOracle::should_inline(mh); |
duke@435 | 815 | } |
duke@435 | 816 | |
duke@435 | 817 | // ------------------------------------------------------------------ |
duke@435 | 818 | // ciMethod::should_not_inline |
duke@435 | 819 | // |
duke@435 | 820 | // Should this method be disallowed from inlining during compilation? |
duke@435 | 821 | bool ciMethod::should_not_inline() { |
duke@435 | 822 | check_is_loaded(); |
duke@435 | 823 | VM_ENTRY_MARK; |
duke@435 | 824 | methodHandle mh(THREAD, get_methodOop()); |
duke@435 | 825 | return CompilerOracle::should_not_inline(mh); |
duke@435 | 826 | } |
duke@435 | 827 | |
duke@435 | 828 | // ------------------------------------------------------------------ |
duke@435 | 829 | // ciMethod::should_print_assembly |
duke@435 | 830 | // |
duke@435 | 831 | // Should the compiler print the generated code for this method? |
duke@435 | 832 | bool ciMethod::should_print_assembly() { |
duke@435 | 833 | check_is_loaded(); |
duke@435 | 834 | VM_ENTRY_MARK; |
duke@435 | 835 | methodHandle mh(THREAD, get_methodOop()); |
duke@435 | 836 | return CompilerOracle::should_print(mh); |
duke@435 | 837 | } |
duke@435 | 838 | |
duke@435 | 839 | // ------------------------------------------------------------------ |
duke@435 | 840 | // ciMethod::break_at_execute |
duke@435 | 841 | // |
duke@435 | 842 | // Should the compiler insert a breakpoint into the generated code |
duke@435 | 843 | // method? |
duke@435 | 844 | bool ciMethod::break_at_execute() { |
duke@435 | 845 | check_is_loaded(); |
duke@435 | 846 | VM_ENTRY_MARK; |
duke@435 | 847 | methodHandle mh(THREAD, get_methodOop()); |
duke@435 | 848 | return CompilerOracle::should_break_at(mh); |
duke@435 | 849 | } |
duke@435 | 850 | |
duke@435 | 851 | // ------------------------------------------------------------------ |
duke@435 | 852 | // ciMethod::has_option |
duke@435 | 853 | // |
duke@435 | 854 | bool ciMethod::has_option(const char* option) { |
duke@435 | 855 | check_is_loaded(); |
duke@435 | 856 | VM_ENTRY_MARK; |
duke@435 | 857 | methodHandle mh(THREAD, get_methodOop()); |
duke@435 | 858 | return CompilerOracle::has_option_string(mh, option); |
duke@435 | 859 | } |
duke@435 | 860 | |
duke@435 | 861 | // ------------------------------------------------------------------ |
duke@435 | 862 | // ciMethod::can_be_compiled |
duke@435 | 863 | // |
duke@435 | 864 | // Have previous compilations of this method succeeded? |
duke@435 | 865 | bool ciMethod::can_be_compiled() { |
duke@435 | 866 | check_is_loaded(); |
duke@435 | 867 | return _is_compilable; |
duke@435 | 868 | } |
duke@435 | 869 | |
duke@435 | 870 | // ------------------------------------------------------------------ |
duke@435 | 871 | // ciMethod::set_not_compilable |
duke@435 | 872 | // |
duke@435 | 873 | // Tell the VM that this method cannot be compiled at all. |
duke@435 | 874 | void ciMethod::set_not_compilable() { |
duke@435 | 875 | check_is_loaded(); |
duke@435 | 876 | VM_ENTRY_MARK; |
duke@435 | 877 | _is_compilable = false; |
duke@435 | 878 | get_methodOop()->set_not_compilable(); |
duke@435 | 879 | } |
duke@435 | 880 | |
duke@435 | 881 | // ------------------------------------------------------------------ |
duke@435 | 882 | // ciMethod::can_be_osr_compiled |
duke@435 | 883 | // |
duke@435 | 884 | // Have previous compilations of this method succeeded? |
duke@435 | 885 | // |
duke@435 | 886 | // Implementation note: the VM does not currently keep track |
duke@435 | 887 | // of failed OSR compilations per bci. The entry_bci parameter |
duke@435 | 888 | // is currently unused. |
duke@435 | 889 | bool ciMethod::can_be_osr_compiled(int entry_bci) { |
duke@435 | 890 | check_is_loaded(); |
duke@435 | 891 | VM_ENTRY_MARK; |
duke@435 | 892 | return !get_methodOop()->access_flags().is_not_osr_compilable(); |
duke@435 | 893 | } |
duke@435 | 894 | |
duke@435 | 895 | // ------------------------------------------------------------------ |
duke@435 | 896 | // ciMethod::has_compiled_code |
duke@435 | 897 | bool ciMethod::has_compiled_code() { |
duke@435 | 898 | VM_ENTRY_MARK; |
duke@435 | 899 | return get_methodOop()->code() != NULL; |
duke@435 | 900 | } |
duke@435 | 901 | |
duke@435 | 902 | // ------------------------------------------------------------------ |
duke@435 | 903 | // ciMethod::instructions_size |
duke@435 | 904 | // This is a rough metric for "fat" methods, compared |
duke@435 | 905 | // before inlining with InlineSmallCode. |
duke@435 | 906 | // The CodeBlob::instructions_size accessor includes |
duke@435 | 907 | // junk like exception handler, stubs, and constant table, |
duke@435 | 908 | // which are not highly relevant to an inlined method. |
duke@435 | 909 | // So we use the more specific accessor nmethod::code_size. |
duke@435 | 910 | int ciMethod::instructions_size() { |
duke@435 | 911 | GUARDED_VM_ENTRY( |
duke@435 | 912 | nmethod* code = get_methodOop()->code(); |
duke@435 | 913 | // if there's no compiled code or the code was produced by the |
duke@435 | 914 | // tier1 profiler return 0 for the code size. This should |
duke@435 | 915 | // probably be based on the compilation level of the nmethod but |
duke@435 | 916 | // that currently isn't properly recorded. |
duke@435 | 917 | if (code == NULL || |
duke@435 | 918 | (TieredCompilation && code->compiler() != NULL && code->compiler()->is_c1())) { |
duke@435 | 919 | return 0; |
duke@435 | 920 | } |
kvn@617 | 921 | return code->code_end() - code->verified_entry_point(); |
duke@435 | 922 | ) |
duke@435 | 923 | } |
duke@435 | 924 | |
duke@435 | 925 | // ------------------------------------------------------------------ |
duke@435 | 926 | // ciMethod::log_nmethod_identity |
duke@435 | 927 | void ciMethod::log_nmethod_identity(xmlStream* log) { |
duke@435 | 928 | GUARDED_VM_ENTRY( |
duke@435 | 929 | nmethod* code = get_methodOop()->code(); |
duke@435 | 930 | if (code != NULL) { |
duke@435 | 931 | code->log_identity(log); |
duke@435 | 932 | } |
duke@435 | 933 | ) |
duke@435 | 934 | } |
duke@435 | 935 | |
duke@435 | 936 | // ------------------------------------------------------------------ |
duke@435 | 937 | // ciMethod::is_not_reached |
duke@435 | 938 | bool ciMethod::is_not_reached(int bci) { |
duke@435 | 939 | check_is_loaded(); |
duke@435 | 940 | VM_ENTRY_MARK; |
duke@435 | 941 | return Interpreter::is_not_reached( |
duke@435 | 942 | methodHandle(THREAD, get_methodOop()), bci); |
duke@435 | 943 | } |
duke@435 | 944 | |
duke@435 | 945 | // ------------------------------------------------------------------ |
duke@435 | 946 | // ciMethod::was_never_executed |
duke@435 | 947 | bool ciMethod::was_executed_more_than(int times) { |
duke@435 | 948 | VM_ENTRY_MARK; |
duke@435 | 949 | return get_methodOop()->was_executed_more_than(times); |
duke@435 | 950 | } |
duke@435 | 951 | |
duke@435 | 952 | // ------------------------------------------------------------------ |
duke@435 | 953 | // ciMethod::has_unloaded_classes_in_signature |
duke@435 | 954 | bool ciMethod::has_unloaded_classes_in_signature() { |
duke@435 | 955 | VM_ENTRY_MARK; |
duke@435 | 956 | { |
duke@435 | 957 | EXCEPTION_MARK; |
duke@435 | 958 | methodHandle m(THREAD, get_methodOop()); |
duke@435 | 959 | bool has_unloaded = methodOopDesc::has_unloaded_classes_in_signature(m, (JavaThread *)THREAD); |
duke@435 | 960 | if( HAS_PENDING_EXCEPTION ) { |
duke@435 | 961 | CLEAR_PENDING_EXCEPTION; |
duke@435 | 962 | return true; // Declare that we may have unloaded classes |
duke@435 | 963 | } |
duke@435 | 964 | return has_unloaded; |
duke@435 | 965 | } |
duke@435 | 966 | } |
duke@435 | 967 | |
duke@435 | 968 | // ------------------------------------------------------------------ |
duke@435 | 969 | // ciMethod::is_klass_loaded |
duke@435 | 970 | bool ciMethod::is_klass_loaded(int refinfo_index, bool must_be_resolved) const { |
duke@435 | 971 | VM_ENTRY_MARK; |
duke@435 | 972 | return get_methodOop()->is_klass_loaded(refinfo_index, must_be_resolved); |
duke@435 | 973 | } |
duke@435 | 974 | |
duke@435 | 975 | // ------------------------------------------------------------------ |
duke@435 | 976 | // ciMethod::check_call |
duke@435 | 977 | bool ciMethod::check_call(int refinfo_index, bool is_static) const { |
duke@435 | 978 | VM_ENTRY_MARK; |
duke@435 | 979 | { |
duke@435 | 980 | EXCEPTION_MARK; |
duke@435 | 981 | HandleMark hm(THREAD); |
duke@435 | 982 | constantPoolHandle pool (THREAD, get_methodOop()->constants()); |
duke@435 | 983 | methodHandle spec_method; |
duke@435 | 984 | KlassHandle spec_klass; |
duke@435 | 985 | LinkResolver::resolve_method(spec_method, spec_klass, pool, refinfo_index, THREAD); |
duke@435 | 986 | if (HAS_PENDING_EXCEPTION) { |
duke@435 | 987 | CLEAR_PENDING_EXCEPTION; |
duke@435 | 988 | return false; |
duke@435 | 989 | } else { |
duke@435 | 990 | return (spec_method->is_static() == is_static); |
duke@435 | 991 | } |
duke@435 | 992 | } |
duke@435 | 993 | return false; |
duke@435 | 994 | } |
duke@435 | 995 | |
duke@435 | 996 | // ------------------------------------------------------------------ |
duke@435 | 997 | // ciMethod::print_codes |
duke@435 | 998 | // |
duke@435 | 999 | // Print the bytecodes for this method. |
duke@435 | 1000 | void ciMethod::print_codes_on(outputStream* st) { |
duke@435 | 1001 | check_is_loaded(); |
duke@435 | 1002 | GUARDED_VM_ENTRY(get_methodOop()->print_codes_on(st);) |
duke@435 | 1003 | } |
duke@435 | 1004 | |
duke@435 | 1005 | |
duke@435 | 1006 | #define FETCH_FLAG_FROM_VM(flag_accessor) { \ |
duke@435 | 1007 | check_is_loaded(); \ |
duke@435 | 1008 | VM_ENTRY_MARK; \ |
duke@435 | 1009 | return get_methodOop()->flag_accessor(); \ |
duke@435 | 1010 | } |
duke@435 | 1011 | |
duke@435 | 1012 | bool ciMethod::is_empty_method() const { FETCH_FLAG_FROM_VM(is_empty_method); } |
duke@435 | 1013 | bool ciMethod::is_vanilla_constructor() const { FETCH_FLAG_FROM_VM(is_vanilla_constructor); } |
duke@435 | 1014 | bool ciMethod::has_loops () const { FETCH_FLAG_FROM_VM(has_loops); } |
duke@435 | 1015 | bool ciMethod::has_jsrs () const { FETCH_FLAG_FROM_VM(has_jsrs); } |
duke@435 | 1016 | bool ciMethod::is_accessor () const { FETCH_FLAG_FROM_VM(is_accessor); } |
duke@435 | 1017 | bool ciMethod::is_initializer () const { FETCH_FLAG_FROM_VM(is_initializer); } |
duke@435 | 1018 | |
duke@435 | 1019 | BCEscapeAnalyzer *ciMethod::get_bcea() { |
duke@435 | 1020 | if (_bcea == NULL) { |
duke@435 | 1021 | _bcea = new (CURRENT_ENV->arena()) BCEscapeAnalyzer(this, NULL); |
duke@435 | 1022 | } |
duke@435 | 1023 | return _bcea; |
duke@435 | 1024 | } |
duke@435 | 1025 | |
duke@435 | 1026 | ciMethodBlocks *ciMethod::get_method_blocks() { |
duke@435 | 1027 | Arena *arena = CURRENT_ENV->arena(); |
duke@435 | 1028 | if (_method_blocks == NULL) { |
duke@435 | 1029 | _method_blocks = new (arena) ciMethodBlocks(arena, this); |
duke@435 | 1030 | } |
duke@435 | 1031 | return _method_blocks; |
duke@435 | 1032 | } |
duke@435 | 1033 | |
duke@435 | 1034 | #undef FETCH_FLAG_FROM_VM |
duke@435 | 1035 | |
duke@435 | 1036 | |
duke@435 | 1037 | // ------------------------------------------------------------------ |
duke@435 | 1038 | // ciMethod::print_codes |
duke@435 | 1039 | // |
duke@435 | 1040 | // Print a range of the bytecodes for this method. |
duke@435 | 1041 | void ciMethod::print_codes_on(int from, int to, outputStream* st) { |
duke@435 | 1042 | check_is_loaded(); |
duke@435 | 1043 | GUARDED_VM_ENTRY(get_methodOop()->print_codes_on(from, to, st);) |
duke@435 | 1044 | } |
duke@435 | 1045 | |
duke@435 | 1046 | // ------------------------------------------------------------------ |
duke@435 | 1047 | // ciMethod::print_name |
duke@435 | 1048 | // |
duke@435 | 1049 | // Print the name of this method, including signature and some flags. |
duke@435 | 1050 | void ciMethod::print_name(outputStream* st) { |
duke@435 | 1051 | check_is_loaded(); |
duke@435 | 1052 | GUARDED_VM_ENTRY(get_methodOop()->print_name(st);) |
duke@435 | 1053 | } |
duke@435 | 1054 | |
duke@435 | 1055 | // ------------------------------------------------------------------ |
duke@435 | 1056 | // ciMethod::print_short_name |
duke@435 | 1057 | // |
duke@435 | 1058 | // Print the name of this method, without signature. |
duke@435 | 1059 | void ciMethod::print_short_name(outputStream* st) { |
duke@435 | 1060 | check_is_loaded(); |
duke@435 | 1061 | GUARDED_VM_ENTRY(get_methodOop()->print_short_name(st);) |
duke@435 | 1062 | } |
duke@435 | 1063 | |
duke@435 | 1064 | // ------------------------------------------------------------------ |
duke@435 | 1065 | // ciMethod::print_impl |
duke@435 | 1066 | // |
duke@435 | 1067 | // Implementation of the print method. |
duke@435 | 1068 | void ciMethod::print_impl(outputStream* st) { |
duke@435 | 1069 | ciObject::print_impl(st); |
duke@435 | 1070 | st->print(" name="); |
duke@435 | 1071 | name()->print_symbol_on(st); |
duke@435 | 1072 | st->print(" holder="); |
duke@435 | 1073 | holder()->print_name_on(st); |
duke@435 | 1074 | st->print(" signature="); |
duke@435 | 1075 | signature()->as_symbol()->print_symbol_on(st); |
duke@435 | 1076 | if (is_loaded()) { |
duke@435 | 1077 | st->print(" loaded=true flags="); |
duke@435 | 1078 | flags().print_member_flags(st); |
duke@435 | 1079 | } else { |
duke@435 | 1080 | st->print(" loaded=false"); |
duke@435 | 1081 | } |
duke@435 | 1082 | } |