std::pmr::monotonic_buffer_resource::do_allocate(3)

NAME
std::pmr::monotonic_buffer_resource::do_allocate - std::pmr::monotonic_buffer_resource::do_allocate

Synopsis
   virtual void* do_allocate( std::size_t bytes, std::size_t alignment (since C++17)
   );
   Allocates storage.
   If the current buffer has sufficient unused space to fit a block with the specified
   size and alignment, allocates the return block from the current buffer.
   Otherwise, this function allocates a new buffer by calling
   upstream_resource()->allocate(n, m), where n is not less than the greater of bytes
   and the next buffer size and m is not less than alignment. It sets the new buffer as
   the current buffer, increases the next buffer size by an implementation-defined
   growth factor (which is not necessarily integral), and then allocates the return
   block from the newly allocated buffer.

Return value
   A pointer to allocated storage of at least bytes bytes in size, aligned to the
   specified alignment if such alignment is supported, and to alignof(std::max_align_t)
   otherwise.

Exceptions
   Throws nothing unless calling allocate() on the upstream memory resource throws.

See also
   allocate allocates memory
               (public member function of std::pmr::memory_resource)
   do_allocate allocates memory
   [virtual] (virtual private member function of std::pmr::memory_resource)