1 /* 2 * Copyright (c) 2001, 2012, Oracle and/or its affiliates. All rights reserved. 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 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 * 23 */ 24 25 #ifndef SHARE_VM_CI_CIMETHODDATA_HPP 26 #define SHARE_VM_CI_CIMETHODDATA_HPP 27 28 #include "ci/ciClassList.hpp" 29 #include "ci/ciKlass.hpp" 30 #include "ci/ciObject.hpp" 31 #include "ci/ciUtilities.hpp" 32 #include "oops/methodData.hpp" 33 #include "oops/oop.inline.hpp" 34 35 class ciBitData; 36 class ciCounterData; 37 class ciJumpData; 38 class ciReceiverTypeData; 39 class ciRetData; 40 class ciBranchData; 41 class ciArrayData; 42 class ciMultiBranchData; 43 class ciArgInfoData; 44 class ciCallTypeData; 45 class ciVirtualCallTypeData; 46 class ciParametersTypeData; 47 48 typedef ProfileData ciProfileData; 49 50 class ciBitData : public BitData { 51 public: 52 ciBitData(DataLayout* layout) : BitData(layout) {}; 53 }; 54 55 class ciCounterData : public CounterData { 56 public: 57 ciCounterData(DataLayout* layout) : CounterData(layout) {}; 58 }; 59 60 class ciJumpData : public JumpData { 61 public: 62 ciJumpData(DataLayout* layout) : JumpData(layout) {}; 63 }; 64 65 class ciTypeEntries { 66 protected: 67 static intptr_t translate_klass(intptr_t k) { 68 Klass* v = TypeEntries::valid_klass(k); 69 if (v != NULL) { 70 ciKlass* klass = CURRENT_ENV->get_klass(v); 71 return with_status(klass, k); 72 } 73 return with_status(NULL, k); 74 } 75 76 public: 77 static ciKlass* valid_ciklass(intptr_t k) { 78 if (!TypeEntries::is_type_none(k) && 79 !TypeEntries::is_type_unknown(k)) { 80 return (ciKlass*)TypeEntries::klass_part(k); 81 } else { 82 return NULL; 83 } 84 } 85 86 static intptr_t with_status(ciKlass* k, intptr_t in) { 87 return TypeEntries::with_status((intptr_t)k, in); 88 } 89 90 #ifndef PRODUCT 91 static void print_ciklass(outputStream* st, intptr_t k); 92 #endif 93 }; 94 95 class ciTypeStackSlotEntries : public TypeStackSlotEntries, ciTypeEntries { 96 public: 97 void translate_type_data_from(const TypeStackSlotEntries* args); 98 99 ciKlass* valid_type(int i) const { 100 return valid_ciklass(type(i)); 101 } 102 103 bool maybe_null(int i) const { 104 return was_null_seen(type(i)); 105 } 106 107 #ifndef PRODUCT 108 void print_data_on(outputStream* st) const; 109 #endif 110 }; 111 112 class ciReturnTypeEntry : public ReturnTypeEntry, ciTypeEntries { 113 public: 114 void translate_type_data_from(const ReturnTypeEntry* ret); 115 116 ciKlass* valid_type() const { 117 return valid_ciklass(type()); 118 } 119 120 bool maybe_null() const { 121 return was_null_seen(type()); 122 } 123 124 #ifndef PRODUCT 125 void print_data_on(outputStream* st) const; 126 #endif 127 }; 128 129 class ciCallTypeData : public CallTypeData { 130 public: 131 ciCallTypeData(DataLayout* layout) : CallTypeData(layout) {} 132 133 ciTypeStackSlotEntries* args() const { return (ciTypeStackSlotEntries*)CallTypeData::args(); } 134 ciReturnTypeEntry* ret() const { return (ciReturnTypeEntry*)CallTypeData::ret(); } 135 136 void translate_from(const ProfileData* data) { 137 if (has_arguments()) { 138 args()->translate_type_data_from(data->as_CallTypeData()->args()); 139 } 140 if (has_return()) { 141 ret()->translate_type_data_from(data->as_CallTypeData()->ret()); 142 } 143 } 144 145 intptr_t argument_type(int i) const { 146 assert(has_arguments(), "no arg type profiling data"); 147 return args()->type(i); 148 } 149 150 ciKlass* valid_argument_type(int i) const { 151 assert(has_arguments(), "no arg type profiling data"); 152 return args()->valid_type(i); 153 } 154 155 intptr_t return_type() const { 156 assert(has_return(), "no ret type profiling data"); 157 return ret()->type(); 158 } 159 160 ciKlass* valid_return_type() const { 161 assert(has_return(), "no ret type profiling data"); 162 return ret()->valid_type(); 163 } 164 165 bool argument_maybe_null(int i) const { 166 return args()->maybe_null(i); 167 } 168 169 bool return_maybe_null() const { 170 return ret()->maybe_null(); 171 } 172 173 #ifndef PRODUCT 174 void print_data_on(outputStream* st) const; 175 #endif 176 }; 177 178 class ciReceiverTypeData : public ReceiverTypeData { 179 public: 180 ciReceiverTypeData(DataLayout* layout) : ReceiverTypeData(layout) {}; 181 182 void set_receiver(uint row, ciKlass* recv) { 183 assert((uint)row < row_limit(), "oob"); 184 set_intptr_at(receiver0_offset + row * receiver_type_row_cell_count, 185 (intptr_t) recv); 186 } 187 188 ciKlass* receiver(uint row) const { 189 assert((uint)row < row_limit(), "oob"); 190 ciKlass* recv = (ciKlass*)intptr_at(receiver0_offset + row * receiver_type_row_cell_count); 191 assert(recv == NULL || recv->is_klass(), "wrong type"); 192 return recv; 193 } 194 195 // Copy & translate from oop based ReceiverTypeData 196 virtual void translate_from(const ProfileData* data) { 197 translate_receiver_data_from(data); 198 } 199 void translate_receiver_data_from(const ProfileData* data); 200 #ifndef PRODUCT 201 void print_data_on(outputStream* st) const; 202 void print_receiver_data_on(outputStream* st) const; 203 #endif 204 }; 205 206 class ciVirtualCallData : public VirtualCallData { 207 // Fake multiple inheritance... It's a ciReceiverTypeData also. 208 ciReceiverTypeData* rtd_super() const { return (ciReceiverTypeData*) this; } 209 210 public: 211 ciVirtualCallData(DataLayout* layout) : VirtualCallData(layout) {}; 212 213 void set_receiver(uint row, ciKlass* recv) { 214 rtd_super()->set_receiver(row, recv); 215 } 216 217 ciKlass* receiver(uint row) { 218 return rtd_super()->receiver(row); 219 } 220 221 // Copy & translate from oop based VirtualCallData 222 virtual void translate_from(const ProfileData* data) { 223 rtd_super()->translate_receiver_data_from(data); 224 } 225 #ifndef PRODUCT 226 void print_data_on(outputStream* st) const; 227 #endif 228 }; 229 230 class ciVirtualCallTypeData : public VirtualCallTypeData { 231 private: 232 // Fake multiple inheritance... It's a ciReceiverTypeData also. 233 ciReceiverTypeData* rtd_super() const { return (ciReceiverTypeData*) this; } 234 public: 235 ciVirtualCallTypeData(DataLayout* layout) : VirtualCallTypeData(layout) {} 236 237 void set_receiver(uint row, ciKlass* recv) { 238 rtd_super()->set_receiver(row, recv); 239 } 240 241 ciKlass* receiver(uint row) const { 242 return rtd_super()->receiver(row); 243 } 244 245 ciTypeStackSlotEntries* args() const { return (ciTypeStackSlotEntries*)VirtualCallTypeData::args(); } 246 ciReturnTypeEntry* ret() const { return (ciReturnTypeEntry*)VirtualCallTypeData::ret(); } 247 248 // Copy & translate from oop based VirtualCallData 249 virtual void translate_from(const ProfileData* data) { 250 rtd_super()->translate_receiver_data_from(data); 251 if (has_arguments()) { 252 args()->translate_type_data_from(data->as_VirtualCallTypeData()->args()); 253 } 254 if (has_return()) { 255 ret()->translate_type_data_from(data->as_VirtualCallTypeData()->ret()); 256 } 257 } 258 259 intptr_t argument_type(int i) const { 260 assert(has_arguments(), "no arg type profiling data"); 261 return args()->type(i); 262 } 263 264 ciKlass* valid_argument_type(int i) const { 265 assert(has_arguments(), "no arg type profiling data"); 266 return args()->valid_type(i); 267 } 268 269 intptr_t return_type() const { 270 assert(has_return(), "no ret type profiling data"); 271 return ret()->type(); 272 } 273 274 ciKlass* valid_return_type() const { 275 assert(has_return(), "no ret type profiling data"); 276 return ret()->valid_type(); 277 } 278 279 bool argument_maybe_null(int i) const { 280 return args()->maybe_null(i); 281 } 282 283 bool return_maybe_null() const { 284 return ret()->maybe_null(); 285 } 286 287 #ifndef PRODUCT 288 void print_data_on(outputStream* st) const; 289 #endif 290 }; 291 292 293 class ciRetData : public RetData { 294 public: 295 ciRetData(DataLayout* layout) : RetData(layout) {}; 296 }; 297 298 class ciBranchData : public BranchData { 299 public: 300 ciBranchData(DataLayout* layout) : BranchData(layout) {}; 301 }; 302 303 class ciArrayData : public ArrayData { 304 public: 305 ciArrayData(DataLayout* layout) : ArrayData(layout) {}; 306 }; 307 308 class ciMultiBranchData : public MultiBranchData { 309 public: 310 ciMultiBranchData(DataLayout* layout) : MultiBranchData(layout) {}; 311 }; 312 313 class ciArgInfoData : public ArgInfoData { 314 public: 315 ciArgInfoData(DataLayout* layout) : ArgInfoData(layout) {}; 316 }; 317 318 class ciParametersTypeData : public ParametersTypeData { 319 public: 320 ciParametersTypeData(DataLayout* layout) : ParametersTypeData(layout) {} 321 322 virtual void translate_from(const ProfileData* data) { 323 parameters()->translate_type_data_from(data->as_ParametersTypeData()->parameters()); 324 } 325 326 ciTypeStackSlotEntries* parameters() const { return (ciTypeStackSlotEntries*)ParametersTypeData::parameters(); } 327 328 ciKlass* valid_parameter_type(int i) const { 329 return parameters()->valid_type(i); 330 } 331 332 bool parameter_maybe_null(int i) const { 333 return parameters()->maybe_null(i); 334 } 335 336 #ifndef PRODUCT 337 void print_data_on(outputStream* st) const; 338 #endif 339 }; 340 341 // ciMethodData 342 // 343 // This class represents a MethodData* in the HotSpot virtual 344 // machine. 345 346 class ciMethodData : public ciMetadata { 347 CI_PACKAGE_ACCESS 348 friend class ciReplay; 349 350 private: 351 // Size in bytes 352 int _data_size; 353 int _extra_data_size; 354 355 // Data entries 356 intptr_t* _data; 357 358 // Cached hint for data_before() 359 int _hint_di; 360 361 // Is data attached? And is it mature? 362 enum { empty_state, immature_state, mature_state }; 363 u_char _state; 364 365 // Set this true if empty extra_data slots are ever witnessed. 366 u_char _saw_free_extra_data; 367 368 // Support for interprocedural escape analysis 369 intx _eflags; // flags on escape information 370 intx _arg_local; // bit set of non-escaping arguments 371 intx _arg_stack; // bit set of stack-allocatable arguments 372 intx _arg_returned; // bit set of returned arguments 373 374 // Maturity of the oop when the snapshot is taken. 375 int _current_mileage; 376 377 // These counters hold the age of MDO in tiered. In tiered we can have the same method 378 // running at different compilation levels concurrently. So, in order to precisely measure 379 // its maturity we need separate counters. 380 int _invocation_counter; 381 int _backedge_counter; 382 383 // Coherent snapshot of original header. 384 MethodData _orig; 385 386 // Dedicated area dedicated to parameters. Null if no parameter 387 // profiling for this method. 388 DataLayout* _parameters; 389 390 ciMethodData(MethodData* md); 391 ciMethodData(); 392 393 // Accessors 394 int data_size() const { return _data_size; } 395 int extra_data_size() const { return _extra_data_size; } 396 intptr_t * data() const { return _data; } 397 398 MethodData* get_MethodData() const { 399 return (MethodData*)_metadata; 400 } 401 402 const char* type_string() { return "ciMethodData"; } 403 404 void print_impl(outputStream* st); 405 406 DataLayout* data_layout_at(int data_index) const { 407 assert(data_index % sizeof(intptr_t) == 0, "unaligned"); 408 return (DataLayout*) (((address)_data) + data_index); 409 } 410 411 bool out_of_bounds(int data_index) { 412 return data_index >= data_size(); 413 } 414 415 // hint accessors 416 int hint_di() const { return _hint_di; } 417 void set_hint_di(int di) { 418 assert(!out_of_bounds(di), "hint_di out of bounds"); 419 _hint_di = di; 420 } 421 ciProfileData* data_before(int bci) { 422 // avoid SEGV on this edge case 423 if (data_size() == 0) 424 return NULL; 425 int hint = hint_di(); 426 if (data_layout_at(hint)->bci() <= bci) 427 return data_at(hint); 428 return first_data(); 429 } 430 431 432 // What is the index of the first data entry? 433 int first_di() { return 0; } 434 435 ciArgInfoData *arg_info() const; 436 437 public: 438 bool is_method_data() const { return true; } 439 440 bool is_empty() { return _state == empty_state; } 441 bool is_mature() { return _state == mature_state; } 442 443 int creation_mileage() { return _orig.creation_mileage(); } 444 int current_mileage() { return _current_mileage; } 445 446 int invocation_count() { return _invocation_counter; } 447 int backedge_count() { return _backedge_counter; } 448 // Transfer information about the method to MethodData*. 449 // would_profile means we would like to profile this method, 450 // meaning it's not trivial. 451 void set_would_profile(bool p); 452 // Also set the numer of loops and blocks in the method. 453 // Again, this is used to determine if a method is trivial. 454 void set_compilation_stats(short loops, short blocks); 455 // If the compiler finds a profiled type that is known statically 456 // for sure, set it in the MethodData 457 void set_argument_type(int bci, int i, ciKlass* k); 458 void set_parameter_type(int i, ciKlass* k); 459 void set_return_type(int bci, ciKlass* k); 460 461 void load_data(); 462 463 // Convert a dp (data pointer) to a di (data index). 464 int dp_to_di(address dp) { 465 return dp - ((address)_data); 466 } 467 468 // Get the data at an arbitrary (sort of) data index. 469 ciProfileData* data_at(int data_index); 470 471 // Walk through the data in order. 472 ciProfileData* first_data() { return data_at(first_di()); } 473 ciProfileData* next_data(ciProfileData* current); 474 bool is_valid(ciProfileData* current) { return current != NULL; } 475 476 // Get the data at an arbitrary bci, or NULL if there is none. 477 ciProfileData* bci_to_data(int bci); 478 ciProfileData* bci_to_extra_data(int bci, bool create_if_missing); 479 480 uint overflow_trap_count() const { 481 return _orig.overflow_trap_count(); 482 } 483 uint overflow_recompile_count() const { 484 return _orig.overflow_recompile_count(); 485 } 486 uint decompile_count() const { 487 return _orig.decompile_count(); 488 } 489 uint trap_count(int reason) const { 490 return _orig.trap_count(reason); 491 } 492 uint trap_reason_limit() const { return _orig.trap_reason_limit(); } 493 uint trap_count_limit() const { return _orig.trap_count_limit(); } 494 495 // Helpful query functions that decode trap_state. 496 int has_trap_at(ciProfileData* data, int reason); 497 int has_trap_at(int bci, int reason) { 498 return has_trap_at(bci_to_data(bci), reason); 499 } 500 int trap_recompiled_at(ciProfileData* data); 501 int trap_recompiled_at(int bci) { 502 return trap_recompiled_at(bci_to_data(bci)); 503 } 504 505 void clear_escape_info(); 506 bool has_escape_info(); 507 void update_escape_info(); 508 509 void set_eflag(MethodData::EscapeFlag f); 510 void clear_eflag(MethodData::EscapeFlag f); 511 bool eflag_set(MethodData::EscapeFlag f) const; 512 513 void set_arg_local(int i); 514 void set_arg_stack(int i); 515 void set_arg_returned(int i); 516 void set_arg_modified(int arg, uint val); 517 518 bool is_arg_local(int i) const; 519 bool is_arg_stack(int i) const; 520 bool is_arg_returned(int i) const; 521 uint arg_modified(int arg) const; 522 523 ciParametersTypeData* parameters_type_data() const { 524 return _parameters != NULL ? new ciParametersTypeData(_parameters) : NULL; 525 } 526 527 // Code generation helper 528 ByteSize offset_of_slot(ciProfileData* data, ByteSize slot_offset_in_data); 529 int byte_offset_of_slot(ciProfileData* data, ByteSize slot_offset_in_data) { return in_bytes(offset_of_slot(data, slot_offset_in_data)); } 530 531 #ifndef PRODUCT 532 // printing support for method data 533 void print(); 534 void print_data_on(outputStream* st); 535 #endif 536 void dump_replay_data(outputStream* out); 537 }; 538 539 #endif // SHARE_VM_CI_CIMETHODDATA_HPP