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std::pmr::p...cate_object(3) C++ Standard Libary std::pmr::p...cate_object(3) NAME std::pmr::polymorphic_allocator::allocate_object - std::pmr::polymor- phic_allocator::allocate_object Synopsis template< class U > (since C++20) [[nodiscard]] U* allocate_object( std::size_t n = 1 ); Allocates storage for n objects of type U using the underlying mem- ory resource. If std::numeric_limits<std::size_t>::max() / sizeof(U) < n, throws std::bad_array_new_length, otherwise equivalent to return static_cast<U*>(allocate_bytes(n * sizeof(U), alignof(U)) ); Parameters n - the number of objects to allocate storage for Return value A pointer to the allocated storage. Notes This function was introduced for use with the fully-specialized al- locator std::pmr::polymorphic_allocator<>, but it may be useful in any spe- cialization as a shortcut to avoid having to rebind from std::pmr::polymorphic_allo- cator<T> to std::pmr::polymorphic_allocator<U>. Since U is not deduced, it must be provided as a template argument when calling this function. Exceptions Throws std::bad_array_new_length if n > std::numeric_lim- its<std::size_t>::max() / sizeof(U); may also be any exceptions thrown by the call to re- source()->allocate. See also allocate_bytes Allocate raw aligned memory from the underlying re- source (C++20) (public member function) new_object Allocates and constructs an object (C++20) (public member function) allocate Allocate memory (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_resource) http://cppreference.com 2022.07.31 std::pmr::p...cate_object(3)
NAME | Synopsis | Parameters | Return value | Notes | Exceptions | See also
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