Elsewhere Memory - C++20 Abstract Machine and Virtual Memory

Explore the limitations of the C++20 object and memory model in this ACCU 2019 conference talk. Delve into the challenges of using memory allocated from external sources, dynamic memory allocation, shared memory, and virtual memory in C++ programs. Examine the mismatch between programmer reality and language specifications, and learn about potential solutions like P0593. Discover insights on next-generation storage devices and their impact on I/O operations. Gain understanding of how future C++ object and memory models might evolve to better align with hardware and kernel realities. Presented by Niall Douglas, author of Boost.Outcome and advocate for 'Elsewhere Memory' concepts in C++.

Intro
Contents
C++ 20 abstract machine
Further reading
Virtual Memory - Overview
Virtual Memory - Private pages
Virtual Memory - Files
Virtual Memory - Swap file
Elsewhere Memory - What is it?
Elsewhere Memory - Accessing it
Problem to solved
Object attachment/detachment
Detachment operations
Attachment operations
Reachable C++ programs 2/3