1 // Profiling map implementation -*- C++ -*- 2 3 // Copyright (C) 2009-2015 Free Software Foundation, Inc. 4 // 5 // This file is part of the GNU ISO C++ Library. This library is free 6 // software; you can redistribute it and/or modify it under the 7 // terms of the GNU General Public License as published by the 8 // Free Software Foundation; either version 3, or (at your option) 9 // any later version. 10 // 11 // This library is distributed in the hope that it will be useful, 12 // but WITHOUT ANY WARRANTY; without even the implied warranty of 13 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14 // GNU General Public License for more details. 15 16 // Under Section 7 of GPL version 3, you are granted additional 17 // permissions described in the GCC Runtime Library Exception, version 18 // 3.1, as published by the Free Software Foundation. 19 20 // You should have received a copy of the GNU General Public License along 21 // with this library; see the file COPYING3. If not see 22 // <http://www.gnu.org/licenses/>. 23 24 /** @file profile/map.h 25 * This file is a GNU profile extension to the Standard C++ Library. 26 */ 27 28 #ifndef _GLIBCXX_PROFILE_MAP_H 29 #define _GLIBCXX_PROFILE_MAP_H 1 30 31 #include <profile/base.h> 32 #include <profile/ordered_base.h> 33 34 namespace std _GLIBCXX_VISIBILITY(default) 35 { 36 namespace __profile 37 { 38 /// Class std::map wrapper with performance instrumentation. 39 template<typename _Key, typename _Tp, typename _Compare = std::less<_Key>, 40 typename _Allocator = std::allocator<std::pair<const _Key, _Tp> > > 41 class map 42 : public _GLIBCXX_STD_C::map<_Key, _Tp, _Compare, _Allocator>, 43 public _Ordered_profile<map<_Key, _Tp, _Compare, _Allocator> > 44 { 45 typedef _GLIBCXX_STD_C::map<_Key, _Tp, _Compare, _Allocator> _Base; 46 47 typedef typename _Base::iterator _Base_iterator; 48 typedef typename _Base::const_iterator _Base_const_iterator; 49 50 public: 51 // types: 52 typedef _Key key_type; 53 typedef _Tp mapped_type; 54 typedef typename _Base::value_type value_type; 55 typedef _Compare key_compare; 56 typedef typename _Base::reference reference; 57 typedef typename _Base::const_reference const_reference; 58 59 typedef __iterator_tracker<_Base_iterator, map> iterator; 60 typedef __iterator_tracker<_Base_const_iterator, 61 map> const_iterator; 62 typedef std::reverse_iterator<iterator> reverse_iterator; 63 typedef std::reverse_iterator<const_iterator> const_reverse_iterator; 64 65 typedef typename _Base::size_type size_type; 66 typedef typename _Base::difference_type difference_type; 67 68 // 23.3.1.1 construct/copy/destroy: 69 70 #if __cplusplus < 201103L 71 map() 72 : _Base() { } 73 map(const map& __x) 74 : _Base(__x) { } 75 ~map() 76 { } 77 #else 78 map() = default; 79 map(const map&) = default; 80 map(map&&) = default; 81 ~map() = default; 82 #endif 83 84 explicit 85 map(const _Compare& __comp, 86 const _Allocator& __a = _Allocator()) 87 : _Base(__comp, __a) { } 88 89 #if __cplusplus >= 201103L 90 template<typename _InputIterator, 91 typename = std::_RequireInputIter<_InputIterator>> 92 #else 93 template<typename _InputIterator> 94 #endif 95 map(_InputIterator __first, _InputIterator __last, 96 const _Compare& __comp = _Compare(), 97 const _Allocator& __a = _Allocator()) 98 : _Base(__first, __last, __comp, __a) { } 99 100 map(const _Base& __x) 101 : _Base(__x) { } 102 103 #if __cplusplus >= 201103L 104 map(initializer_list<value_type> __l, 105 const _Compare& __c = _Compare(), 106 const _Allocator& __a = _Allocator()) 107 : _Base(__l, __c, __a) { } 108 109 explicit 110 map(const _Allocator& __a) 111 : _Base(__a) { } 112 113 map(const map& __x, const _Allocator& __a) 114 : _Base(__x, __a) { } 115 116 map(map&& __x, const _Allocator& __a) 117 noexcept( noexcept(_Base(std::move(__x), __a)) ) 118 : _Base(std::move(__x), __a) { } 119 120 map(initializer_list<value_type> __l, const _Allocator& __a) 121 : _Base(__l, __a) { } 122 123 template<typename _InputIterator> 124 map(_InputIterator __first, _InputIterator __last, 125 const _Allocator& __a) 126 : _Base(__first, __last, __a) { } 127 #endif 128 129 #if __cplusplus < 201103L 130 map& 131 operator=(const map& __x) 132 { 133 this->_M_profile_destruct(); 134 _M_base() = __x; 135 this->_M_profile_construct(); 136 return *this; 137 } 138 #else 139 map& 140 operator=(const map&) = default; 141 142 map& 143 operator=(map&&) = default; 144 145 map& 146 operator=(initializer_list<value_type> __l) 147 { 148 this->_M_profile_destruct(); 149 _M_base() = __l; 150 this->_M_profile_construct(); 151 return *this; 152 } 153 #endif 154 155 // iterators 156 iterator 157 begin() _GLIBCXX_NOEXCEPT 158 { return iterator(_Base::begin(), this); } 159 160 const_iterator 161 begin() const _GLIBCXX_NOEXCEPT 162 { return const_iterator(_Base::begin(), this); } 163 164 iterator 165 end() _GLIBCXX_NOEXCEPT 166 { return iterator(_Base::end(), this); } 167 168 const_iterator 169 end() const _GLIBCXX_NOEXCEPT 170 { return const_iterator(_Base::end(), this); } 171 172 #if __cplusplus >= 201103L 173 const_iterator 174 cbegin() const noexcept 175 { return const_iterator(_Base::cbegin(), this); } 176 177 const_iterator 178 cend() const noexcept 179 { return const_iterator(_Base::cend(), this); } 180 #endif 181 182 reverse_iterator 183 rbegin() _GLIBCXX_NOEXCEPT 184 { 185 __profcxx_map2umap_invalidate(this->_M_map2umap_info); 186 return reverse_iterator(end()); 187 } 188 189 const_reverse_iterator 190 rbegin() const _GLIBCXX_NOEXCEPT 191 { 192 __profcxx_map2umap_invalidate(this->_M_map2umap_info); 193 return const_reverse_iterator(end()); 194 } 195 196 reverse_iterator 197 rend() _GLIBCXX_NOEXCEPT 198 { 199 __profcxx_map2umap_invalidate(this->_M_map2umap_info); 200 return reverse_iterator(begin()); 201 } 202 203 const_reverse_iterator 204 rend() const _GLIBCXX_NOEXCEPT 205 { 206 __profcxx_map2umap_invalidate(this->_M_map2umap_info); 207 return const_reverse_iterator(begin()); 208 } 209 210 #if __cplusplus >= 201103L 211 const_reverse_iterator 212 crbegin() const noexcept 213 { 214 __profcxx_map2umap_invalidate(this->_M_map2umap_info); 215 return const_reverse_iterator(cend()); 216 } 217 218 const_reverse_iterator 219 crend() const noexcept 220 { 221 __profcxx_map2umap_invalidate(this->_M_map2umap_info); 222 return const_reverse_iterator(cbegin()); 223 } 224 #endif 225 226 // 23.3.1.2 element access: 227 mapped_type& 228 operator[](const key_type& __k) 229 { 230 __profcxx_map2umap_find(this->_M_map2umap_info, this->size()); 231 return _Base::operator[](__k); 232 } 233 234 #if __cplusplus >= 201103L 235 mapped_type& 236 operator[](key_type&& __k) 237 { 238 __profcxx_map2umap_find(this->_M_map2umap_info, this->size()); 239 return _Base::operator[](std::move(__k)); 240 } 241 #endif 242 243 mapped_type& 244 at(const key_type& __k) 245 { 246 __profcxx_map2umap_find(this->_M_map2umap_info, this->size()); 247 return _Base::at(__k); 248 } 249 250 const mapped_type& 251 at(const key_type& __k) const 252 { 253 __profcxx_map2umap_find(this->_M_map2umap_info, this->size()); 254 return _Base::at(__k); 255 } 256 257 // modifiers: 258 #if __cplusplus >= 201103L 259 template<typename... _Args> 260 std::pair<iterator, bool> 261 emplace(_Args&&... __args) 262 { 263 // The cost is the same whether or not the element is inserted so we 264 // always report insertion of 1 element. 265 __profcxx_map2umap_insert(this->_M_map2umap_info, this->size(), 1); 266 auto __base_ret = _Base::emplace(std::forward<_Args>(__args)...); 267 return std::make_pair(iterator(__base_ret.first, this), 268 __base_ret.second); 269 } 270 271 template<typename... _Args> 272 iterator 273 emplace_hint(const_iterator __pos, _Args&&... __args) 274 { 275 auto size_before = this->size(); 276 auto __res 277 = _Base::emplace_hint(__pos.base(), std::forward<_Args>(__args)...); 278 __profcxx_map2umap_insert(this->_M_map2umap_info, 279 size_before, _M_hint_used(__pos.base(), __res) ? 0 : 1); 280 return iterator(__res, this); 281 } 282 #endif 283 284 std::pair<iterator, bool> 285 insert(const value_type& __x) 286 { 287 __profcxx_map2umap_insert(this->_M_map2umap_info, this->size(), 1); 288 std::pair<_Base_iterator, bool> __base_ret = _Base::insert(__x); 289 return std::make_pair(iterator(__base_ret.first, this), 290 __base_ret.second); 291 } 292 293 #if __cplusplus >= 201103L 294 template<typename _Pair, typename = typename 295 std::enable_if<std::is_constructible<value_type, 296 _Pair&&>::value>::type> 297 std::pair<iterator, bool> 298 insert(_Pair&& __x) 299 { 300 __profcxx_map2umap_insert(this->_M_map2umap_info, this->size(), 1); 301 auto __base_ret= _Base::insert(std::forward<_Pair>(__x)); 302 return std::make_pair(iterator(__base_ret.first, this), 303 __base_ret.second); 304 } 305 #endif 306 307 #if __cplusplus >= 201103L 308 void 309 insert(std::initializer_list<value_type> __list) 310 { insert(__list.begin(), __list.end()); } 311 #endif 312 313 iterator 314 #if __cplusplus >= 201103L 315 insert(const_iterator __pos, const value_type& __x) 316 #else 317 insert(iterator __pos, const value_type& __x) 318 #endif 319 { 320 size_type size_before = this->size(); 321 _Base_iterator __res = _Base::insert(__pos.base(), __x); 322 323 __profcxx_map2umap_insert(this->_M_map2umap_info, 324 size_before, _M_hint_used(__pos.base(), __res) ? 0 : 1); 325 return iterator(__res, this); 326 } 327 328 #if __cplusplus >= 201103L 329 template<typename _Pair, typename = typename 330 std::enable_if<std::is_constructible<value_type, 331 _Pair&&>::value>::type> 332 iterator 333 insert(const_iterator __pos, _Pair&& __x) 334 { 335 size_type size_before = this->size(); 336 auto __res = _Base::insert(__pos.base(), std::forward<_Pair>(__x)); 337 338 __profcxx_map2umap_insert(this->_M_map2umap_info, 339 size_before, _M_hint_used(__pos.base(), __res) ? 0 : 1); 340 return iterator(__res, this); 341 } 342 #endif 343 344 template<typename _InputIterator> 345 void 346 insert(_InputIterator __first, _InputIterator __last) 347 { 348 for (; __first != __last; ++__first) 349 insert(*__first); 350 } 351 352 #if __cplusplus >= 201103L 353 iterator 354 erase(const_iterator __pos) 355 { 356 __profcxx_map2umap_erase(this->_M_map2umap_info, this->size(), 1); 357 return iterator(_Base::erase(__pos.base()), this); 358 } 359 360 iterator 361 erase(iterator __pos) 362 { 363 __profcxx_map2umap_erase(this->_M_map2umap_info, this->size(), 1); 364 return iterator(_Base::erase(__pos.base()), this); 365 } 366 #else 367 void 368 erase(iterator __pos) 369 { 370 __profcxx_map2umap_erase(this->_M_map2umap_info, this->size(), 1); 371 _Base::erase(__pos.base()); 372 } 373 #endif 374 375 size_type 376 erase(const key_type& __x) 377 { 378 __profcxx_map2umap_find(this->_M_map2umap_info, this->size()); 379 __profcxx_map2umap_erase(this->_M_map2umap_info, this->size(), 1); 380 return _Base::erase(__x); 381 } 382 383 #if __cplusplus >= 201103L 384 iterator 385 erase(const_iterator __first, const_iterator __last) 386 { 387 if (__first != __last) 388 { 389 iterator __ret; 390 for (; __first != __last;) 391 __ret = erase(__first++); 392 return __ret; 393 } 394 else 395 return iterator(_Base::erase(__first.base(), __last.base()), this); 396 } 397 #else 398 void 399 erase(iterator __first, iterator __last) 400 { 401 for (; __first != __last;) 402 erase(__first++); 403 } 404 #endif 405 406 void 407 swap(map& __x) 408 #if __cplusplus >= 201103L 409 noexcept( noexcept(declval<_Base>().swap(__x)) ) 410 #endif 411 { 412 _Base::swap(__x); 413 this->_M_swap(__x); 414 } 415 416 void 417 clear() _GLIBCXX_NOEXCEPT 418 { 419 this->_M_profile_destruct(); 420 _Base::clear(); 421 this->_M_profile_construct(); 422 } 423 424 // 23.3.1.3 map operations: 425 iterator 426 find(const key_type& __x) 427 { 428 __profcxx_map2umap_find(this->_M_map2umap_info, this->size()); 429 return iterator(_Base::find(__x), this); 430 } 431 432 const_iterator 433 find(const key_type& __x) const 434 { 435 __profcxx_map2umap_find(this->_M_map2umap_info, this->size()); 436 return const_iterator(_Base::find(__x), this); 437 } 438 439 size_type 440 count(const key_type& __x) const 441 { 442 __profcxx_map2umap_find(this->_M_map2umap_info, this->size()); 443 return _Base::count(__x); 444 } 445 446 iterator 447 lower_bound(const key_type& __x) 448 { 449 __profcxx_map2umap_find(this->_M_map2umap_info, this->size()); 450 __profcxx_map2umap_invalidate(this->_M_map2umap_info); 451 return iterator(_Base::lower_bound(__x), this); 452 } 453 454 const_iterator 455 lower_bound(const key_type& __x) const 456 { 457 __profcxx_map2umap_find(this->_M_map2umap_info, this->size()); 458 __profcxx_map2umap_invalidate(this->_M_map2umap_info); 459 return const_iterator(_Base::lower_bound(__x), this); 460 } 461 462 iterator 463 upper_bound(const key_type& __x) 464 { 465 __profcxx_map2umap_find(this->_M_map2umap_info, this->size()); 466 __profcxx_map2umap_invalidate(this->_M_map2umap_info); 467 return iterator(_Base::upper_bound(__x), this); 468 } 469 470 const_iterator 471 upper_bound(const key_type& __x) const 472 { 473 __profcxx_map2umap_find(this->_M_map2umap_info, this->size()); 474 __profcxx_map2umap_invalidate(this->_M_map2umap_info); 475 return const_iterator(_Base::upper_bound(__x), this); 476 } 477 478 std::pair<iterator,iterator> 479 equal_range(const key_type& __x) 480 { 481 __profcxx_map2umap_find(this->_M_map2umap_info, this->size()); 482 std::pair<_Base_iterator, _Base_iterator> __base_ret 483 = _Base::equal_range(__x); 484 return std::make_pair(iterator(__base_ret.first, this), 485 iterator(__base_ret.second, this)); 486 } 487 488 std::pair<const_iterator,const_iterator> 489 equal_range(const key_type& __x) const 490 { 491 __profcxx_map2umap_find(this->_M_map2umap_info, this->size()); 492 std::pair<_Base_const_iterator, _Base_const_iterator> __base_ret 493 = _Base::equal_range(__x); 494 return std::make_pair(const_iterator(__base_ret.first, this), 495 const_iterator(__base_ret.second, this)); 496 } 497 498 _Base& 499 _M_base() _GLIBCXX_NOEXCEPT { return *this; } 500 501 const _Base& 502 _M_base() const _GLIBCXX_NOEXCEPT { return *this; } 503 504 private: 505 /** If hint is used we consider that the map and unordered_map 506 * operations have equivalent insertion cost so we do not update metrics 507 * about it. 508 * Note that to find out if hint has been used is libstdc++ 509 * implementation dependent. 510 */ 511 bool 512 _M_hint_used(_Base_const_iterator __hint, _Base_iterator __res) 513 { 514 return (__hint == __res 515 || (__hint == _M_base().end() && ++__res == _M_base().end()) 516 || (__hint != _M_base().end() && (++__hint == __res 517 || ++__res == --__hint))); 518 } 519 520 521 template<typename _K1, typename _T1, typename _C1, typename _A1> 522 friend bool 523 operator==(const map<_K1, _T1, _C1, _A1>&, 524 const map<_K1, _T1, _C1, _A1>&); 525 526 template<typename _K1, typename _T1, typename _C1, typename _A1> 527 friend bool 528 operator<(const map<_K1, _T1, _C1, _A1>&, 529 const map<_K1, _T1, _C1, _A1>&); 530 }; 531 532 template<typename _Key, typename _Tp, 533 typename _Compare, typename _Allocator> 534 inline bool 535 operator==(const map<_Key, _Tp, _Compare, _Allocator>& __lhs, 536 const map<_Key, _Tp, _Compare, _Allocator>& __rhs) 537 { 538 __profcxx_map2umap_invalidate(__lhs._M_map2umap_info); 539 __profcxx_map2umap_invalidate(__rhs._M_map2umap_info); 540 return __lhs._M_base() == __rhs._M_base(); 541 } 542 543 template<typename _Key, typename _Tp, 544 typename _Compare, typename _Allocator> 545 inline bool 546 operator<(const map<_Key, _Tp, _Compare, _Allocator>& __lhs, 547 const map<_Key, _Tp, _Compare, _Allocator>& __rhs) 548 { 549 __profcxx_map2umap_invalidate(__lhs._M_map2umap_info); 550 __profcxx_map2umap_invalidate(__rhs._M_map2umap_info); 551 return __lhs._M_base() < __rhs._M_base(); 552 } 553 554 template<typename _Key, typename _Tp, 555 typename _Compare, typename _Allocator> 556 inline bool 557 operator!=(const map<_Key, _Tp, _Compare, _Allocator>& __lhs, 558 const map<_Key, _Tp, _Compare, _Allocator>& __rhs) 559 { return !(__lhs == __rhs); } 560 561 template<typename _Key, typename _Tp, 562 typename _Compare, typename _Allocator> 563 inline bool 564 operator<=(const map<_Key, _Tp, _Compare, _Allocator>& __lhs, 565 const map<_Key, _Tp, _Compare, _Allocator>& __rhs) 566 { return !(__rhs < __lhs); } 567 568 template<typename _Key, typename _Tp, 569 typename _Compare, typename _Allocator> 570 inline bool 571 operator>=(const map<_Key, _Tp, _Compare, _Allocator>& __lhs, 572 const map<_Key, _Tp, _Compare, _Allocator>& __rhs) 573 { return !(__lhs < __rhs); } 574 575 template<typename _Key, typename _Tp, 576 typename _Compare, typename _Allocator> 577 inline bool 578 operator>(const map<_Key, _Tp, _Compare, _Allocator>& __lhs, 579 const map<_Key, _Tp, _Compare, _Allocator>& __rhs) 580 { return __rhs < __lhs; } 581 582 template<typename _Key, typename _Tp, 583 typename _Compare, typename _Allocator> 584 inline void 585 swap(map<_Key, _Tp, _Compare, _Allocator>& __lhs, 586 map<_Key, _Tp, _Compare, _Allocator>& __rhs) 587 { __lhs.swap(__rhs); } 588 589 } // namespace __profile 590 } // namespace std 591 592 #endif 593