| File: | tools/clang/tools/extra/clangd/GlobalCompilationDatabase.cpp |
| Warning: | line 93, column 3 Use of memory after it is freed |
Press '?' to see keyboard shortcuts
Keyboard shortcuts:
| 1 | //===--- GlobalCompilationDatabase.cpp --------------------------*- C++-*-===// | |||
| 2 | // | |||
| 3 | // The LLVM Compiler Infrastructure | |||
| 4 | // | |||
| 5 | // This file is distributed under the University of Illinois Open Source | |||
| 6 | // License. See LICENSE.TXT for details. | |||
| 7 | // | |||
| 8 | //===---------------------------------------------------------------------===// | |||
| 9 | ||||
| 10 | #include "GlobalCompilationDatabase.h" | |||
| 11 | #include "Logger.h" | |||
| 12 | #include "clang/Tooling/CompilationDatabase.h" | |||
| 13 | #include "llvm/Support/FileSystem.h" | |||
| 14 | #include "llvm/Support/Path.h" | |||
| 15 | ||||
| 16 | namespace clang { | |||
| 17 | namespace clangd { | |||
| 18 | ||||
| 19 | tooling::CompileCommand | |||
| 20 | GlobalCompilationDatabase::getFallbackCommand(PathRef File) const { | |||
| 21 | return tooling::CompileCommand(llvm::sys::path::parent_path(File), | |||
| 22 | llvm::sys::path::filename(File), | |||
| 23 | {"clang", File.str()}, | |||
| 24 | /*Output=*/""); | |||
| 25 | } | |||
| 26 | ||||
| 27 | DirectoryBasedGlobalCompilationDatabase:: | |||
| 28 | DirectoryBasedGlobalCompilationDatabase( | |||
| 29 | llvm::Optional<Path> CompileCommandsDir) | |||
| 30 | : CompileCommandsDir(std::move(CompileCommandsDir)) {} | |||
| 31 | ||||
| 32 | llvm::Optional<tooling::CompileCommand> | |||
| 33 | DirectoryBasedGlobalCompilationDatabase::getCompileCommand(PathRef File) const { | |||
| 34 | if (auto CDB = getCDBForFile(File)) { | |||
| ||||
| 35 | auto Candidates = CDB->getCompileCommands(File); | |||
| 36 | if (!Candidates.empty()) { | |||
| 37 | addExtraFlags(File, Candidates.front()); | |||
| 38 | return std::move(Candidates.front()); | |||
| 39 | } | |||
| 40 | } else { | |||
| 41 | log("Failed to find compilation database for " + Twine(File)); | |||
| 42 | } | |||
| 43 | return llvm::None; | |||
| 44 | } | |||
| 45 | ||||
| 46 | tooling::CompileCommand | |||
| 47 | DirectoryBasedGlobalCompilationDatabase::getFallbackCommand( | |||
| 48 | PathRef File) const { | |||
| 49 | auto C = GlobalCompilationDatabase::getFallbackCommand(File); | |||
| 50 | addExtraFlags(File, C); | |||
| 51 | return C; | |||
| 52 | } | |||
| 53 | ||||
| 54 | void DirectoryBasedGlobalCompilationDatabase::setCompileCommandsDir(Path P) { | |||
| 55 | std::lock_guard<std::mutex> Lock(Mutex); | |||
| 56 | CompileCommandsDir = P; | |||
| 57 | CompilationDatabases.clear(); | |||
| 58 | } | |||
| 59 | ||||
| 60 | void DirectoryBasedGlobalCompilationDatabase::setExtraFlagsForFile( | |||
| 61 | PathRef File, std::vector<std::string> ExtraFlags) { | |||
| 62 | std::lock_guard<std::mutex> Lock(Mutex); | |||
| 63 | ExtraFlagsForFile[File] = std::move(ExtraFlags); | |||
| 64 | } | |||
| 65 | ||||
| 66 | void DirectoryBasedGlobalCompilationDatabase::addExtraFlags( | |||
| 67 | PathRef File, tooling::CompileCommand &C) const { | |||
| 68 | std::lock_guard<std::mutex> Lock(Mutex); | |||
| 69 | ||||
| 70 | auto It = ExtraFlagsForFile.find(File); | |||
| 71 | if (It == ExtraFlagsForFile.end()) | |||
| 72 | return; | |||
| 73 | ||||
| 74 | auto &Args = C.CommandLine; | |||
| 75 | assert(Args.size() >= 2 && "Expected at least [compiler, source file]")(static_cast <bool> (Args.size() >= 2 && "Expected at least [compiler, source file]" ) ? void (0) : __assert_fail ("Args.size() >= 2 && \"Expected at least [compiler, source file]\"" , "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/tools/extra/clangd/GlobalCompilationDatabase.cpp" , 75, __extension__ __PRETTY_FUNCTION__)); | |||
| 76 | // The last argument of CommandLine is the name of the input file. | |||
| 77 | // Add ExtraFlags before it. | |||
| 78 | Args.insert(Args.end() - 1, It->second.begin(), It->second.end()); | |||
| 79 | } | |||
| 80 | ||||
| 81 | tooling::CompilationDatabase * | |||
| 82 | DirectoryBasedGlobalCompilationDatabase::getCDBInDirLocked(PathRef Dir) const { | |||
| 83 | // FIXME(ibiryukov): Invalidate cached compilation databases on changes | |||
| 84 | auto CachedIt = CompilationDatabases.find(Dir); | |||
| 85 | if (CachedIt != CompilationDatabases.end()) | |||
| 86 | return CachedIt->second.get(); | |||
| 87 | std::string Error = ""; | |||
| 88 | auto CDB = tooling::CompilationDatabase::loadFromDirectory(Dir, Error); | |||
| 89 | if (CDB) | |||
| 90 | CDB = tooling::inferMissingCompileCommands(std::move(CDB)); | |||
| 91 | auto Result = CDB.get(); | |||
| 92 | CompilationDatabases.insert(std::make_pair(Dir, std::move(CDB))); | |||
| 93 | return Result; | |||
| ||||
| 94 | } | |||
| 95 | ||||
| 96 | tooling::CompilationDatabase * | |||
| 97 | DirectoryBasedGlobalCompilationDatabase::getCDBForFile(PathRef File) const { | |||
| 98 | namespace path = llvm::sys::path; | |||
| 99 | assert((path::is_absolute(File, path::Style::posix) ||(static_cast <bool> ((path::is_absolute(File, path::Style ::posix) || path::is_absolute(File, path::Style::windows)) && "path must be absolute") ? void (0) : __assert_fail ("(path::is_absolute(File, path::Style::posix) || path::is_absolute(File, path::Style::windows)) && \"path must be absolute\"" , "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/tools/extra/clangd/GlobalCompilationDatabase.cpp" , 101, __extension__ __PRETTY_FUNCTION__)) | |||
| 100 | path::is_absolute(File, path::Style::windows)) &&(static_cast <bool> ((path::is_absolute(File, path::Style ::posix) || path::is_absolute(File, path::Style::windows)) && "path must be absolute") ? void (0) : __assert_fail ("(path::is_absolute(File, path::Style::posix) || path::is_absolute(File, path::Style::windows)) && \"path must be absolute\"" , "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/tools/extra/clangd/GlobalCompilationDatabase.cpp" , 101, __extension__ __PRETTY_FUNCTION__)) | |||
| 101 | "path must be absolute")(static_cast <bool> ((path::is_absolute(File, path::Style ::posix) || path::is_absolute(File, path::Style::windows)) && "path must be absolute") ? void (0) : __assert_fail ("(path::is_absolute(File, path::Style::posix) || path::is_absolute(File, path::Style::windows)) && \"path must be absolute\"" , "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/tools/extra/clangd/GlobalCompilationDatabase.cpp" , 101, __extension__ __PRETTY_FUNCTION__)); | |||
| 102 | ||||
| 103 | std::lock_guard<std::mutex> Lock(Mutex); | |||
| 104 | if (CompileCommandsDir) | |||
| 105 | return getCDBInDirLocked(*CompileCommandsDir); | |||
| 106 | for (auto Path = path::parent_path(File); !Path.empty(); | |||
| 107 | Path = path::parent_path(Path)) | |||
| 108 | if (auto CDB = getCDBInDirLocked(Path)) | |||
| 109 | return CDB; | |||
| 110 | return nullptr; | |||
| 111 | } | |||
| 112 | ||||
| 113 | } // namespace clangd | |||
| 114 | } // namespace clang |
| 1 | // unique_ptr implementation -*- C++ -*- |
| 2 | |
| 3 | // Copyright (C) 2008-2017 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 and |
| 21 | // a copy of the GCC Runtime Library Exception along with this program; |
| 22 | // see the files COPYING3 and COPYING.RUNTIME respectively. If not, see |
| 23 | // <http://www.gnu.org/licenses/>. |
| 24 | |
| 25 | /** @file bits/unique_ptr.h |
| 26 | * This is an internal header file, included by other library headers. |
| 27 | * Do not attempt to use it directly. @headername{memory} |
| 28 | */ |
| 29 | |
| 30 | #ifndef _UNIQUE_PTR_H1 |
| 31 | #define _UNIQUE_PTR_H1 1 |
| 32 | |
| 33 | #include <bits/c++config.h> |
| 34 | #include <debug/assertions.h> |
| 35 | #include <type_traits> |
| 36 | #include <utility> |
| 37 | #include <tuple> |
| 38 | #include <bits/stl_function.h> |
| 39 | #include <bits/functional_hash.h> |
| 40 | |
| 41 | namespace std _GLIBCXX_VISIBILITY(default)__attribute__ ((__visibility__ ("default"))) |
| 42 | { |
| 43 | _GLIBCXX_BEGIN_NAMESPACE_VERSION |
| 44 | |
| 45 | /** |
| 46 | * @addtogroup pointer_abstractions |
| 47 | * @{ |
| 48 | */ |
| 49 | |
| 50 | #if _GLIBCXX_USE_DEPRECATED1 |
| 51 | template<typename> class auto_ptr; |
| 52 | #endif |
| 53 | |
| 54 | /// Primary template of default_delete, used by unique_ptr |
| 55 | template<typename _Tp> |
| 56 | struct default_delete |
| 57 | { |
| 58 | /// Default constructor |
| 59 | constexpr default_delete() noexcept = default; |
| 60 | |
| 61 | /** @brief Converting constructor. |
| 62 | * |
| 63 | * Allows conversion from a deleter for arrays of another type, @p _Up, |
| 64 | * only if @p _Up* is convertible to @p _Tp*. |
| 65 | */ |
| 66 | template<typename _Up, typename = typename |
| 67 | enable_if<is_convertible<_Up*, _Tp*>::value>::type> |
| 68 | default_delete(const default_delete<_Up>&) noexcept { } |
| 69 | |
| 70 | /// Calls @c delete @p __ptr |
| 71 | void |
| 72 | operator()(_Tp* __ptr) const |
| 73 | { |
| 74 | static_assert(!is_void<_Tp>::value, |
| 75 | "can't delete pointer to incomplete type"); |
| 76 | static_assert(sizeof(_Tp)>0, |
| 77 | "can't delete pointer to incomplete type"); |
| 78 | delete __ptr; |
| 79 | } |
| 80 | }; |
| 81 | |
| 82 | // _GLIBCXX_RESOLVE_LIB_DEFECTS |
| 83 | // DR 740 - omit specialization for array objects with a compile time length |
| 84 | /// Specialization for arrays, default_delete. |
| 85 | template<typename _Tp> |
| 86 | struct default_delete<_Tp[]> |
| 87 | { |
| 88 | public: |
| 89 | /// Default constructor |
| 90 | constexpr default_delete() noexcept = default; |
| 91 | |
| 92 | /** @brief Converting constructor. |
| 93 | * |
| 94 | * Allows conversion from a deleter for arrays of another type, such as |
| 95 | * a const-qualified version of @p _Tp. |
| 96 | * |
| 97 | * Conversions from types derived from @c _Tp are not allowed because |
| 98 | * it is unsafe to @c delete[] an array of derived types through a |
| 99 | * pointer to the base type. |
| 100 | */ |
| 101 | template<typename _Up, typename = typename |
| 102 | enable_if<is_convertible<_Up(*)[], _Tp(*)[]>::value>::type> |
| 103 | default_delete(const default_delete<_Up[]>&) noexcept { } |
| 104 | |
| 105 | /// Calls @c delete[] @p __ptr |
| 106 | template<typename _Up> |
| 107 | typename enable_if<is_convertible<_Up(*)[], _Tp(*)[]>::value>::type |
| 108 | operator()(_Up* __ptr) const |
| 109 | { |
| 110 | static_assert(sizeof(_Tp)>0, |
| 111 | "can't delete pointer to incomplete type"); |
| 112 | delete [] __ptr; |
| 113 | } |
| 114 | }; |
| 115 | |
| 116 | template <typename _Tp, typename _Dp> |
| 117 | class __uniq_ptr_impl |
| 118 | { |
| 119 | template <typename _Up, typename _Ep, typename = void> |
| 120 | struct _Ptr |
| 121 | { |
| 122 | using type = _Up*; |
| 123 | }; |
| 124 | |
| 125 | template <typename _Up, typename _Ep> |
| 126 | struct |
| 127 | _Ptr<_Up, _Ep, __void_t<typename remove_reference<_Ep>::type::pointer>> |
| 128 | { |
| 129 | using type = typename remove_reference<_Ep>::type::pointer; |
| 130 | }; |
| 131 | |
| 132 | public: |
| 133 | using _DeleterConstraint = enable_if< |
| 134 | __and_<__not_<is_pointer<_Dp>>, |
| 135 | is_default_constructible<_Dp>>::value>; |
| 136 | |
| 137 | using pointer = typename _Ptr<_Tp, _Dp>::type; |
| 138 | |
| 139 | __uniq_ptr_impl() = default; |
| 140 | __uniq_ptr_impl(pointer __p) : _M_t() { _M_ptr() = __p; } |
| 141 | |
| 142 | template<typename _Del> |
| 143 | __uniq_ptr_impl(pointer __p, _Del&& __d) |
| 144 | : _M_t(__p, std::forward<_Del>(__d)) { } |
| 145 | |
| 146 | pointer& _M_ptr() { return std::get<0>(_M_t); } |
| 147 | pointer _M_ptr() const { return std::get<0>(_M_t); } |
| 148 | _Dp& _M_deleter() { return std::get<1>(_M_t); } |
| 149 | const _Dp& _M_deleter() const { return std::get<1>(_M_t); } |
| 150 | |
| 151 | private: |
| 152 | tuple<pointer, _Dp> _M_t; |
| 153 | }; |
| 154 | |
| 155 | /// 20.7.1.2 unique_ptr for single objects. |
| 156 | template <typename _Tp, typename _Dp = default_delete<_Tp>> |
| 157 | class unique_ptr |
| 158 | { |
| 159 | template <class _Up> |
| 160 | using _DeleterConstraint = |
| 161 | typename __uniq_ptr_impl<_Tp, _Up>::_DeleterConstraint::type; |
| 162 | |
| 163 | __uniq_ptr_impl<_Tp, _Dp> _M_t; |
| 164 | |
| 165 | public: |
| 166 | using pointer = typename __uniq_ptr_impl<_Tp, _Dp>::pointer; |
| 167 | using element_type = _Tp; |
| 168 | using deleter_type = _Dp; |
| 169 | |
| 170 | // helper template for detecting a safe conversion from another |
| 171 | // unique_ptr |
| 172 | template<typename _Up, typename _Ep> |
| 173 | using __safe_conversion_up = __and_< |
| 174 | is_convertible<typename unique_ptr<_Up, _Ep>::pointer, pointer>, |
| 175 | __not_<is_array<_Up>>, |
| 176 | __or_<__and_<is_reference<deleter_type>, |
| 177 | is_same<deleter_type, _Ep>>, |
| 178 | __and_<__not_<is_reference<deleter_type>>, |
| 179 | is_convertible<_Ep, deleter_type>> |
| 180 | > |
| 181 | >; |
| 182 | |
| 183 | // Constructors. |
| 184 | |
| 185 | /// Default constructor, creates a unique_ptr that owns nothing. |
| 186 | template <typename _Up = _Dp, |
| 187 | typename = _DeleterConstraint<_Up>> |
| 188 | constexpr unique_ptr() noexcept |
| 189 | : _M_t() |
| 190 | { } |
| 191 | |
| 192 | /** Takes ownership of a pointer. |
| 193 | * |
| 194 | * @param __p A pointer to an object of @c element_type |
| 195 | * |
| 196 | * The deleter will be value-initialized. |
| 197 | */ |
| 198 | template <typename _Up = _Dp, |
| 199 | typename = _DeleterConstraint<_Up>> |
| 200 | explicit |
| 201 | unique_ptr(pointer __p) noexcept |
| 202 | : _M_t(__p) |
| 203 | { } |
| 204 | |
| 205 | /** Takes ownership of a pointer. |
| 206 | * |
| 207 | * @param __p A pointer to an object of @c element_type |
| 208 | * @param __d A reference to a deleter. |
| 209 | * |
| 210 | * The deleter will be initialized with @p __d |
| 211 | */ |
| 212 | unique_ptr(pointer __p, |
| 213 | typename conditional<is_reference<deleter_type>::value, |
| 214 | deleter_type, const deleter_type&>::type __d) noexcept |
| 215 | : _M_t(__p, __d) { } |
| 216 | |
| 217 | /** Takes ownership of a pointer. |
| 218 | * |
| 219 | * @param __p A pointer to an object of @c element_type |
| 220 | * @param __d An rvalue reference to a deleter. |
| 221 | * |
| 222 | * The deleter will be initialized with @p std::move(__d) |
| 223 | */ |
| 224 | unique_ptr(pointer __p, |
| 225 | typename remove_reference<deleter_type>::type&& __d) noexcept |
| 226 | : _M_t(std::move(__p), std::move(__d)) |
| 227 | { static_assert(!std::is_reference<deleter_type>::value, |
| 228 | "rvalue deleter bound to reference"); } |
| 229 | |
| 230 | /// Creates a unique_ptr that owns nothing. |
| 231 | template <typename _Up = _Dp, |
| 232 | typename = _DeleterConstraint<_Up>> |
| 233 | constexpr unique_ptr(nullptr_t) noexcept : unique_ptr() { } |
| 234 | |
| 235 | // Move constructors. |
| 236 | |
| 237 | /// Move constructor. |
| 238 | unique_ptr(unique_ptr&& __u) noexcept |
| 239 | : _M_t(__u.release(), std::forward<deleter_type>(__u.get_deleter())) { } |
| 240 | |
| 241 | /** @brief Converting constructor from another type |
| 242 | * |
| 243 | * Requires that the pointer owned by @p __u is convertible to the |
| 244 | * type of pointer owned by this object, @p __u does not own an array, |
| 245 | * and @p __u has a compatible deleter type. |
| 246 | */ |
| 247 | template<typename _Up, typename _Ep, typename = _Require< |
| 248 | __safe_conversion_up<_Up, _Ep>, |
| 249 | typename conditional<is_reference<_Dp>::value, |
| 250 | is_same<_Ep, _Dp>, |
| 251 | is_convertible<_Ep, _Dp>>::type>> |
| 252 | unique_ptr(unique_ptr<_Up, _Ep>&& __u) noexcept |
| 253 | : _M_t(__u.release(), std::forward<_Ep>(__u.get_deleter())) |
| 254 | { } |
| 255 | |
| 256 | #if _GLIBCXX_USE_DEPRECATED1 |
| 257 | /// Converting constructor from @c auto_ptr |
| 258 | template<typename _Up, typename = _Require< |
| 259 | is_convertible<_Up*, _Tp*>, is_same<_Dp, default_delete<_Tp>>>> |
| 260 | unique_ptr(auto_ptr<_Up>&& __u) noexcept; |
| 261 | #endif |
| 262 | |
| 263 | /// Destructor, invokes the deleter if the stored pointer is not null. |
| 264 | ~unique_ptr() noexcept |
| 265 | { |
| 266 | auto& __ptr = _M_t._M_ptr(); |
| 267 | if (__ptr != nullptr) |
| 268 | get_deleter()(__ptr); |
| 269 | __ptr = pointer(); |
| 270 | } |
| 271 | |
| 272 | // Assignment. |
| 273 | |
| 274 | /** @brief Move assignment operator. |
| 275 | * |
| 276 | * @param __u The object to transfer ownership from. |
| 277 | * |
| 278 | * Invokes the deleter first if this object owns a pointer. |
| 279 | */ |
| 280 | unique_ptr& |
| 281 | operator=(unique_ptr&& __u) noexcept |
| 282 | { |
| 283 | reset(__u.release()); |
| 284 | get_deleter() = std::forward<deleter_type>(__u.get_deleter()); |
| 285 | return *this; |
| 286 | } |
| 287 | |
| 288 | /** @brief Assignment from another type. |
| 289 | * |
| 290 | * @param __u The object to transfer ownership from, which owns a |
| 291 | * convertible pointer to a non-array object. |
| 292 | * |
| 293 | * Invokes the deleter first if this object owns a pointer. |
| 294 | */ |
| 295 | template<typename _Up, typename _Ep> |
| 296 | typename enable_if< __and_< |
| 297 | __safe_conversion_up<_Up, _Ep>, |
| 298 | is_assignable<deleter_type&, _Ep&&> |
| 299 | >::value, |
| 300 | unique_ptr&>::type |
| 301 | operator=(unique_ptr<_Up, _Ep>&& __u) noexcept |
| 302 | { |
| 303 | reset(__u.release()); |
| 304 | get_deleter() = std::forward<_Ep>(__u.get_deleter()); |
| 305 | return *this; |
| 306 | } |
| 307 | |
| 308 | /// Reset the %unique_ptr to empty, invoking the deleter if necessary. |
| 309 | unique_ptr& |
| 310 | operator=(nullptr_t) noexcept |
| 311 | { |
| 312 | reset(); |
| 313 | return *this; |
| 314 | } |
| 315 | |
| 316 | // Observers. |
| 317 | |
| 318 | /// Dereference the stored pointer. |
| 319 | typename add_lvalue_reference<element_type>::type |
| 320 | operator*() const |
| 321 | { |
| 322 | __glibcxx_assert(get() != pointer()); |
| 323 | return *get(); |
| 324 | } |
| 325 | |
| 326 | /// Return the stored pointer. |
| 327 | pointer |
| 328 | operator->() const noexcept |
| 329 | { |
| 330 | _GLIBCXX_DEBUG_PEDASSERT(get() != pointer()); |
| 331 | return get(); |
| 332 | } |
| 333 | |
| 334 | /// Return the stored pointer. |
| 335 | pointer |
| 336 | get() const noexcept |
| 337 | { return _M_t._M_ptr(); } |
| 338 | |
| 339 | /// Return a reference to the stored deleter. |
| 340 | deleter_type& |
| 341 | get_deleter() noexcept |
| 342 | { return _M_t._M_deleter(); } |
| 343 | |
| 344 | /// Return a reference to the stored deleter. |
| 345 | const deleter_type& |
| 346 | get_deleter() const noexcept |
| 347 | { return _M_t._M_deleter(); } |
| 348 | |
| 349 | /// Return @c true if the stored pointer is not null. |
| 350 | explicit operator bool() const noexcept |
| 351 | { return get() == pointer() ? false : true; } |
| 352 | |
| 353 | // Modifiers. |
| 354 | |
| 355 | /// Release ownership of any stored pointer. |
| 356 | pointer |
| 357 | release() noexcept |
| 358 | { |
| 359 | pointer __p = get(); |
| 360 | _M_t._M_ptr() = pointer(); |
| 361 | return __p; |
| 362 | } |
| 363 | |
| 364 | /** @brief Replace the stored pointer. |
| 365 | * |
| 366 | * @param __p The new pointer to store. |
| 367 | * |
| 368 | * The deleter will be invoked if a pointer is already owned. |
| 369 | */ |
| 370 | void |
| 371 | reset(pointer __p = pointer()) noexcept |
| 372 | { |
| 373 | using std::swap; |
| 374 | swap(_M_t._M_ptr(), __p); |
| 375 | if (__p != pointer()) |
| 376 | get_deleter()(__p); |
| 377 | } |
| 378 | |
| 379 | /// Exchange the pointer and deleter with another object. |
| 380 | void |
| 381 | swap(unique_ptr& __u) noexcept |
| 382 | { |
| 383 | using std::swap; |
| 384 | swap(_M_t, __u._M_t); |
| 385 | } |
| 386 | |
| 387 | // Disable copy from lvalue. |
| 388 | unique_ptr(const unique_ptr&) = delete; |
| 389 | unique_ptr& operator=(const unique_ptr&) = delete; |
| 390 | }; |
| 391 | |
| 392 | /// 20.7.1.3 unique_ptr for array objects with a runtime length |
| 393 | // [unique.ptr.runtime] |
| 394 | // _GLIBCXX_RESOLVE_LIB_DEFECTS |
| 395 | // DR 740 - omit specialization for array objects with a compile time length |
| 396 | template<typename _Tp, typename _Dp> |
| 397 | class unique_ptr<_Tp[], _Dp> |
| 398 | { |
| 399 | template <typename _Up> |
| 400 | using _DeleterConstraint = |
| 401 | typename __uniq_ptr_impl<_Tp, _Up>::_DeleterConstraint::type; |
| 402 | |
| 403 | __uniq_ptr_impl<_Tp, _Dp> _M_t; |
| 404 | |
| 405 | template<typename _Up> |
| 406 | using __remove_cv = typename remove_cv<_Up>::type; |
| 407 | |
| 408 | // like is_base_of<_Tp, _Up> but false if unqualified types are the same |
| 409 | template<typename _Up> |
| 410 | using __is_derived_Tp |
| 411 | = __and_< is_base_of<_Tp, _Up>, |
| 412 | __not_<is_same<__remove_cv<_Tp>, __remove_cv<_Up>>> >; |
| 413 | |
| 414 | public: |
| 415 | using pointer = typename __uniq_ptr_impl<_Tp, _Dp>::pointer; |
| 416 | using element_type = _Tp; |
| 417 | using deleter_type = _Dp; |
| 418 | |
| 419 | // helper template for detecting a safe conversion from another |
| 420 | // unique_ptr |
| 421 | template<typename _Up, typename _Ep, |
| 422 | typename _Up_up = unique_ptr<_Up, _Ep>, |
| 423 | typename _Up_element_type = typename _Up_up::element_type> |
| 424 | using __safe_conversion_up = __and_< |
| 425 | is_array<_Up>, |
| 426 | is_same<pointer, element_type*>, |
| 427 | is_same<typename _Up_up::pointer, _Up_element_type*>, |
| 428 | is_convertible<_Up_element_type(*)[], element_type(*)[]>, |
| 429 | __or_<__and_<is_reference<deleter_type>, is_same<deleter_type, _Ep>>, |
| 430 | __and_<__not_<is_reference<deleter_type>>, |
| 431 | is_convertible<_Ep, deleter_type>>> |
| 432 | >; |
| 433 | |
| 434 | // helper template for detecting a safe conversion from a raw pointer |
| 435 | template<typename _Up> |
| 436 | using __safe_conversion_raw = __and_< |
| 437 | __or_<__or_<is_same<_Up, pointer>, |
| 438 | is_same<_Up, nullptr_t>>, |
| 439 | __and_<is_pointer<_Up>, |
| 440 | is_same<pointer, element_type*>, |
| 441 | is_convertible< |
| 442 | typename remove_pointer<_Up>::type(*)[], |
| 443 | element_type(*)[]> |
| 444 | > |
| 445 | > |
| 446 | >; |
| 447 | |
| 448 | // Constructors. |
| 449 | |
| 450 | /// Default constructor, creates a unique_ptr that owns nothing. |
| 451 | template <typename _Up = _Dp, |
| 452 | typename = _DeleterConstraint<_Up>> |
| 453 | constexpr unique_ptr() noexcept |
| 454 | : _M_t() |
| 455 | { } |
| 456 | |
| 457 | /** Takes ownership of a pointer. |
| 458 | * |
| 459 | * @param __p A pointer to an array of a type safely convertible |
| 460 | * to an array of @c element_type |
| 461 | * |
| 462 | * The deleter will be value-initialized. |
| 463 | */ |
| 464 | template<typename _Up, |
| 465 | typename _Vp = _Dp, |
| 466 | typename = _DeleterConstraint<_Vp>, |
| 467 | typename = typename enable_if< |
| 468 | __safe_conversion_raw<_Up>::value, bool>::type> |
| 469 | explicit |
| 470 | unique_ptr(_Up __p) noexcept |
| 471 | : _M_t(__p) |
| 472 | { } |
| 473 | |
| 474 | /** Takes ownership of a pointer. |
| 475 | * |
| 476 | * @param __p A pointer to an array of a type safely convertible |
| 477 | * to an array of @c element_type |
| 478 | * @param __d A reference to a deleter. |
| 479 | * |
| 480 | * The deleter will be initialized with @p __d |
| 481 | */ |
| 482 | template<typename _Up, |
| 483 | typename = typename enable_if< |
| 484 | __safe_conversion_raw<_Up>::value, bool>::type> |
| 485 | unique_ptr(_Up __p, |
| 486 | typename conditional<is_reference<deleter_type>::value, |
| 487 | deleter_type, const deleter_type&>::type __d) noexcept |
| 488 | : _M_t(__p, __d) { } |
| 489 | |
| 490 | /** Takes ownership of a pointer. |
| 491 | * |
| 492 | * @param __p A pointer to an array of a type safely convertible |
| 493 | * to an array of @c element_type |
| 494 | * @param __d A reference to a deleter. |
| 495 | * |
| 496 | * The deleter will be initialized with @p std::move(__d) |
| 497 | */ |
| 498 | template<typename _Up, |
| 499 | typename = typename enable_if< |
| 500 | __safe_conversion_raw<_Up>::value, bool>::type> |
| 501 | unique_ptr(_Up __p, typename |
| 502 | remove_reference<deleter_type>::type&& __d) noexcept |
| 503 | : _M_t(std::move(__p), std::move(__d)) |
| 504 | { static_assert(!is_reference<deleter_type>::value, |
| 505 | "rvalue deleter bound to reference"); } |
| 506 | |
| 507 | /// Move constructor. |
| 508 | unique_ptr(unique_ptr&& __u) noexcept |
| 509 | : _M_t(__u.release(), std::forward<deleter_type>(__u.get_deleter())) { } |
| 510 | |
| 511 | /// Creates a unique_ptr that owns nothing. |
| 512 | template <typename _Up = _Dp, |
| 513 | typename = _DeleterConstraint<_Up>> |
| 514 | constexpr unique_ptr(nullptr_t) noexcept : unique_ptr() { } |
| 515 | |
| 516 | template<typename _Up, typename _Ep, |
| 517 | typename = _Require<__safe_conversion_up<_Up, _Ep>>> |
| 518 | unique_ptr(unique_ptr<_Up, _Ep>&& __u) noexcept |
| 519 | : _M_t(__u.release(), std::forward<_Ep>(__u.get_deleter())) |
| 520 | { } |
| 521 | |
| 522 | /// Destructor, invokes the deleter if the stored pointer is not null. |
| 523 | ~unique_ptr() |
| 524 | { |
| 525 | auto& __ptr = _M_t._M_ptr(); |
| 526 | if (__ptr != nullptr) |
| 527 | get_deleter()(__ptr); |
| 528 | __ptr = pointer(); |
| 529 | } |
| 530 | |
| 531 | // Assignment. |
| 532 | |
| 533 | /** @brief Move assignment operator. |
| 534 | * |
| 535 | * @param __u The object to transfer ownership from. |
| 536 | * |
| 537 | * Invokes the deleter first if this object owns a pointer. |
| 538 | */ |
| 539 | unique_ptr& |
| 540 | operator=(unique_ptr&& __u) noexcept |
| 541 | { |
| 542 | reset(__u.release()); |
| 543 | get_deleter() = std::forward<deleter_type>(__u.get_deleter()); |
| 544 | return *this; |
| 545 | } |
| 546 | |
| 547 | /** @brief Assignment from another type. |
| 548 | * |
| 549 | * @param __u The object to transfer ownership from, which owns a |
| 550 | * convertible pointer to an array object. |
| 551 | * |
| 552 | * Invokes the deleter first if this object owns a pointer. |
| 553 | */ |
| 554 | template<typename _Up, typename _Ep> |
| 555 | typename |
| 556 | enable_if<__and_<__safe_conversion_up<_Up, _Ep>, |
| 557 | is_assignable<deleter_type&, _Ep&&> |
| 558 | >::value, |
| 559 | unique_ptr&>::type |
| 560 | operator=(unique_ptr<_Up, _Ep>&& __u) noexcept |
| 561 | { |
| 562 | reset(__u.release()); |
| 563 | get_deleter() = std::forward<_Ep>(__u.get_deleter()); |
| 564 | return *this; |
| 565 | } |
| 566 | |
| 567 | /// Reset the %unique_ptr to empty, invoking the deleter if necessary. |
| 568 | unique_ptr& |
| 569 | operator=(nullptr_t) noexcept |
| 570 | { |
| 571 | reset(); |
| 572 | return *this; |
| 573 | } |
| 574 | |
| 575 | // Observers. |
| 576 | |
| 577 | /// Access an element of owned array. |
| 578 | typename std::add_lvalue_reference<element_type>::type |
| 579 | operator[](size_t __i) const |
| 580 | { |
| 581 | __glibcxx_assert(get() != pointer()); |
| 582 | return get()[__i]; |
| 583 | } |
| 584 | |
| 585 | /// Return the stored pointer. |
| 586 | pointer |
| 587 | get() const noexcept |
| 588 | { return _M_t._M_ptr(); } |
| 589 | |
| 590 | /// Return a reference to the stored deleter. |
| 591 | deleter_type& |
| 592 | get_deleter() noexcept |
| 593 | { return _M_t._M_deleter(); } |
| 594 | |
| 595 | /// Return a reference to the stored deleter. |
| 596 | const deleter_type& |
| 597 | get_deleter() const noexcept |
| 598 | { return _M_t._M_deleter(); } |
| 599 | |
| 600 | /// Return @c true if the stored pointer is not null. |
| 601 | explicit operator bool() const noexcept |
| 602 | { return get() == pointer() ? false : true; } |
| 603 | |
| 604 | // Modifiers. |
| 605 | |
| 606 | /// Release ownership of any stored pointer. |
| 607 | pointer |
| 608 | release() noexcept |
| 609 | { |
| 610 | pointer __p = get(); |
| 611 | _M_t._M_ptr() = pointer(); |
| 612 | return __p; |
| 613 | } |
| 614 | |
| 615 | /** @brief Replace the stored pointer. |
| 616 | * |
| 617 | * @param __p The new pointer to store. |
| 618 | * |
| 619 | * The deleter will be invoked if a pointer is already owned. |
| 620 | */ |
| 621 | template <typename _Up, |
| 622 | typename = _Require< |
| 623 | __or_<is_same<_Up, pointer>, |
| 624 | __and_<is_same<pointer, element_type*>, |
| 625 | is_pointer<_Up>, |
| 626 | is_convertible< |
| 627 | typename remove_pointer<_Up>::type(*)[], |
| 628 | element_type(*)[] |
| 629 | > |
| 630 | > |
| 631 | > |
| 632 | >> |
| 633 | void |
| 634 | reset(_Up __p) noexcept |
| 635 | { |
| 636 | pointer __ptr = __p; |
| 637 | using std::swap; |
| 638 | swap(_M_t._M_ptr(), __ptr); |
| 639 | if (__ptr != nullptr) |
| 640 | get_deleter()(__ptr); |
| 641 | } |
| 642 | |
| 643 | void reset(nullptr_t = nullptr) noexcept |
| 644 | { |
| 645 | reset(pointer()); |
| 646 | } |
| 647 | |
| 648 | /// Exchange the pointer and deleter with another object. |
| 649 | void |
| 650 | swap(unique_ptr& __u) noexcept |
| 651 | { |
| 652 | using std::swap; |
| 653 | swap(_M_t, __u._M_t); |
| 654 | } |
| 655 | |
| 656 | // Disable copy from lvalue. |
| 657 | unique_ptr(const unique_ptr&) = delete; |
| 658 | unique_ptr& operator=(const unique_ptr&) = delete; |
| 659 | }; |
| 660 | |
| 661 | template<typename _Tp, typename _Dp> |
| 662 | inline |
| 663 | #if __cplusplus201103L > 201402L || !defined(__STRICT_ANSI__1) // c++1z or gnu++11 |
| 664 | // Constrained free swap overload, see p0185r1 |
| 665 | typename enable_if<__is_swappable<_Dp>::value>::type |
| 666 | #else |
| 667 | void |
| 668 | #endif |
| 669 | swap(unique_ptr<_Tp, _Dp>& __x, |
| 670 | unique_ptr<_Tp, _Dp>& __y) noexcept |
| 671 | { __x.swap(__y); } |
| 672 | |
| 673 | #if __cplusplus201103L > 201402L || !defined(__STRICT_ANSI__1) // c++1z or gnu++11 |
| 674 | template<typename _Tp, typename _Dp> |
| 675 | typename enable_if<!__is_swappable<_Dp>::value>::type |
| 676 | swap(unique_ptr<_Tp, _Dp>&, |
| 677 | unique_ptr<_Tp, _Dp>&) = delete; |
| 678 | #endif |
| 679 | |
| 680 | template<typename _Tp, typename _Dp, |
| 681 | typename _Up, typename _Ep> |
| 682 | inline bool |
| 683 | operator==(const unique_ptr<_Tp, _Dp>& __x, |
| 684 | const unique_ptr<_Up, _Ep>& __y) |
| 685 | { return __x.get() == __y.get(); } |
| 686 | |
| 687 | template<typename _Tp, typename _Dp> |
| 688 | inline bool |
| 689 | operator==(const unique_ptr<_Tp, _Dp>& __x, nullptr_t) noexcept |
| 690 | { return !__x; } |
| 691 | |
| 692 | template<typename _Tp, typename _Dp> |
| 693 | inline bool |
| 694 | operator==(nullptr_t, const unique_ptr<_Tp, _Dp>& __x) noexcept |
| 695 | { return !__x; } |
| 696 | |
| 697 | template<typename _Tp, typename _Dp, |
| 698 | typename _Up, typename _Ep> |
| 699 | inline bool |
| 700 | operator!=(const unique_ptr<_Tp, _Dp>& __x, |
| 701 | const unique_ptr<_Up, _Ep>& __y) |
| 702 | { return __x.get() != __y.get(); } |
| 703 | |
| 704 | template<typename _Tp, typename _Dp> |
| 705 | inline bool |
| 706 | operator!=(const unique_ptr<_Tp, _Dp>& __x, nullptr_t) noexcept |
| 707 | { return (bool)__x; } |
| 708 | |
| 709 | template<typename _Tp, typename _Dp> |
| 710 | inline bool |
| 711 | operator!=(nullptr_t, const unique_ptr<_Tp, _Dp>& __x) noexcept |
| 712 | { return (bool)__x; } |
| 713 | |
| 714 | template<typename _Tp, typename _Dp, |
| 715 | typename _Up, typename _Ep> |
| 716 | inline bool |
| 717 | operator<(const unique_ptr<_Tp, _Dp>& __x, |
| 718 | const unique_ptr<_Up, _Ep>& __y) |
| 719 | { |
| 720 | typedef typename |
| 721 | std::common_type<typename unique_ptr<_Tp, _Dp>::pointer, |
| 722 | typename unique_ptr<_Up, _Ep>::pointer>::type _CT; |
| 723 | return std::less<_CT>()(__x.get(), __y.get()); |
| 724 | } |
| 725 | |
| 726 | template<typename _Tp, typename _Dp> |
| 727 | inline bool |
| 728 | operator<(const unique_ptr<_Tp, _Dp>& __x, nullptr_t) |
| 729 | { return std::less<typename unique_ptr<_Tp, _Dp>::pointer>()(__x.get(), |
| 730 | nullptr); } |
| 731 | |
| 732 | template<typename _Tp, typename _Dp> |
| 733 | inline bool |
| 734 | operator<(nullptr_t, const unique_ptr<_Tp, _Dp>& __x) |
| 735 | { return std::less<typename unique_ptr<_Tp, _Dp>::pointer>()(nullptr, |
| 736 | __x.get()); } |
| 737 | |
| 738 | template<typename _Tp, typename _Dp, |
| 739 | typename _Up, typename _Ep> |
| 740 | inline bool |
| 741 | operator<=(const unique_ptr<_Tp, _Dp>& __x, |
| 742 | const unique_ptr<_Up, _Ep>& __y) |
| 743 | { return !(__y < __x); } |
| 744 | |
| 745 | template<typename _Tp, typename _Dp> |
| 746 | inline bool |
| 747 | operator<=(const unique_ptr<_Tp, _Dp>& __x, nullptr_t) |
| 748 | { return !(nullptr < __x); } |
| 749 | |
| 750 | template<typename _Tp, typename _Dp> |
| 751 | inline bool |
| 752 | operator<=(nullptr_t, const unique_ptr<_Tp, _Dp>& __x) |
| 753 | { return !(__x < nullptr); } |
| 754 | |
| 755 | template<typename _Tp, typename _Dp, |
| 756 | typename _Up, typename _Ep> |
| 757 | inline bool |
| 758 | operator>(const unique_ptr<_Tp, _Dp>& __x, |
| 759 | const unique_ptr<_Up, _Ep>& __y) |
| 760 | { return (__y < __x); } |
| 761 | |
| 762 | template<typename _Tp, typename _Dp> |
| 763 | inline bool |
| 764 | operator>(const unique_ptr<_Tp, _Dp>& __x, nullptr_t) |
| 765 | { return std::less<typename unique_ptr<_Tp, _Dp>::pointer>()(nullptr, |
| 766 | __x.get()); } |
| 767 | |
| 768 | template<typename _Tp, typename _Dp> |
| 769 | inline bool |
| 770 | operator>(nullptr_t, const unique_ptr<_Tp, _Dp>& __x) |
| 771 | { return std::less<typename unique_ptr<_Tp, _Dp>::pointer>()(__x.get(), |
| 772 | nullptr); } |
| 773 | |
| 774 | template<typename _Tp, typename _Dp, |
| 775 | typename _Up, typename _Ep> |
| 776 | inline bool |
| 777 | operator>=(const unique_ptr<_Tp, _Dp>& __x, |
| 778 | const unique_ptr<_Up, _Ep>& __y) |
| 779 | { return !(__x < __y); } |
| 780 | |
| 781 | template<typename _Tp, typename _Dp> |
| 782 | inline bool |
| 783 | operator>=(const unique_ptr<_Tp, _Dp>& __x, nullptr_t) |
| 784 | { return !(__x < nullptr); } |
| 785 | |
| 786 | template<typename _Tp, typename _Dp> |
| 787 | inline bool |
| 788 | operator>=(nullptr_t, const unique_ptr<_Tp, _Dp>& __x) |
| 789 | { return !(nullptr < __x); } |
| 790 | |
| 791 | /// std::hash specialization for unique_ptr. |
| 792 | template<typename _Tp, typename _Dp> |
| 793 | struct hash<unique_ptr<_Tp, _Dp>> |
| 794 | : public __hash_base<size_t, unique_ptr<_Tp, _Dp>>, |
| 795 | private __poison_hash<typename unique_ptr<_Tp, _Dp>::pointer> |
| 796 | { |
| 797 | size_t |
| 798 | operator()(const unique_ptr<_Tp, _Dp>& __u) const noexcept |
| 799 | { |
| 800 | typedef unique_ptr<_Tp, _Dp> _UP; |
| 801 | return std::hash<typename _UP::pointer>()(__u.get()); |
| 802 | } |
| 803 | }; |
| 804 | |
| 805 | #if __cplusplus201103L > 201103L |
| 806 | |
| 807 | #define __cpp_lib_make_unique 201304 |
| 808 | |
| 809 | template<typename _Tp> |
| 810 | struct _MakeUniq |
| 811 | { typedef unique_ptr<_Tp> __single_object; }; |
| 812 | |
| 813 | template<typename _Tp> |
| 814 | struct _MakeUniq<_Tp[]> |
| 815 | { typedef unique_ptr<_Tp[]> __array; }; |
| 816 | |
| 817 | template<typename _Tp, size_t _Bound> |
| 818 | struct _MakeUniq<_Tp[_Bound]> |
| 819 | { struct __invalid_type { }; }; |
| 820 | |
| 821 | /// std::make_unique for single objects |
| 822 | template<typename _Tp, typename... _Args> |
| 823 | inline typename _MakeUniq<_Tp>::__single_object |
| 824 | make_unique(_Args&&... __args) |
| 825 | { return unique_ptr<_Tp>(new _Tp(std::forward<_Args>(__args)...)); } |
| 826 | |
| 827 | /// std::make_unique for arrays of unknown bound |
| 828 | template<typename _Tp> |
| 829 | inline typename _MakeUniq<_Tp>::__array |
| 830 | make_unique(size_t __num) |
| 831 | { return unique_ptr<_Tp>(new remove_extent_t<_Tp>[__num]()); } |
| 832 | |
| 833 | /// Disable std::make_unique for arrays of known bound |
| 834 | template<typename _Tp, typename... _Args> |
| 835 | inline typename _MakeUniq<_Tp>::__invalid_type |
| 836 | make_unique(_Args&&...) = delete; |
| 837 | #endif |
| 838 | |
| 839 | // @} group pointer_abstractions |
| 840 | |
| 841 | _GLIBCXX_END_NAMESPACE_VERSION |
| 842 | } // namespace |
| 843 | |
| 844 | #endif /* _UNIQUE_PTR_H */ |