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