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std::pmr::p...or::allocate(3) C++ Standard Libarystd::pmr::p...or::allocate(3) NAME std::pmr::polymorphic_allocator::allocate - std::pmr::polymorphic_allo- cator::allocate Synopsis T* allocate( std::size_t n ); (since C++17) (until C++20) [[nodiscard]] T* allocate( std::size_t n ); (since C++20) Allocates storage for n objects of type T using the underlying mem- ory resource. Equivalent to return static_cast<T*>(resource()->allocate(n * sizeof(T), alignof(T)));. Parameters n - the number of objects to allocate storage for Return value A pointer to the allocated storage. Exceptions Throws std::bad_array_new_length if n > std::numeric_lim- its<std::size_t>::max() / sizeof(T); may also throw any exceptions thrown by the call to re- source()->allocate. Defect reports The following behavior-changing defect reports were applied retroac- tively to previously published C++ standards. DR Applied to Behavior as published Correct behavior LWG 3038 C++17 allocate might allocate storage of wrong throws length_error size in- stead LWG 3237 C++17 the exception thrown by allocate was made consistent inconsistent with std::allocator::allocate See also allocate_bytes Allocate raw aligned memory from the underlying re- source (C++20) (public member function) allocate_object Allocates raw memory suitable for an object or an array (C++20) (public member function) new_object Allocates and constructs an object (C++20) (public member function) allocate allocates uninitialized storage using the allocator [static] (public static member function of std::alloca- tor_traits<Alloc>) allocate allocates memory (public member function of std::pmr::memory_re- source) http://cppreference.com 2022.07.31 std::pmr::p...or::allocate(3)
NAME | Synopsis | Parameters | Return value | Exceptions | See also
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