cppcon2020 Back to basics: The Abstract Machine

文章目录

1. 1. 什么是 C++ Abstract Machine
2. 2. Structure
   1. 2.1. Memory
   2. 2.2. Objects
3. 3. Threads
4. 4. Summary

参考资料

什么是 C++ Abstract Machine

“The C++ Abstract machine is a portable abstraction of your operating system, kernel and hardware. The abstract machine is the intermediary between your c++ program and the system that it is run on.”

C++ defines how programs work in terms of an abstract machine deliberately defined to be “close to the hardware”.

When we write c++ code, we are writing to the c++ abstract machine.

Structure

Memory

Objects

Threads

Memory

• A single flat space.

• No memory hierarchy

  • No concept of statck, registers or cache
  • No concept of heterogeneous memory
• All parts of memory are equally reachable by the am
• Access to memory hash uniform latency

Objects

Threads

Summary

参考资料

• cpp conference 2020 bilibili