C++ 20 (2a) New Features - Concept of Splitting Execution State and the Thread of Execution

The video tutorial discusses different programming models, focusing on the threaded model and coroutines. The threaded model allows parallel execution but is limited by the kernel scheduler's capacity to handle numerous threads. Coroutines, on the other hand, offer concurrency without parallelism, allowing for millions of coroutines without burdening the system scheduler. They are managed by the programmer at specific suspension points, making them efficient for certain applications. The video concludes with a preview of the next topic, routine anatomy.

What is a key characteristic of the threaded model in programming?

• Tasks are executed sequentially.

• Tasks are executed in parallel.

• Tasks are executed based on priority.

• Tasks are executed randomly.

Why is it impractical to have millions of threads in a threaded model?

• Threads are difficult to manage.

• Threads require too much memory.

• Threads cannot be executed in parallel.

• The kernel scheduler can only handle a limited number of threads.

How do coroutines differ from threads in terms of stack usage?

• Coroutines do not have a stack.

• Coroutines have a larger stack than threads.

• Coroutines have a stack for each task.

• Coroutines share a stack with threads.

What is a benefit of using coroutines over threads?

• Coroutines can run on multiple CPUs simultaneously.

• Coroutines require synchronization primitives.

• Coroutines are faster than threads in all scenarios.

• Coroutines can handle millions of tasks without burdening the system scheduler.

What is the role of suspension points in coroutines?

• They determine the priority of tasks.

• They allocate memory for coroutine tasks.

• They allow coroutines to be switched and scheduled by the programmer.

• They synchronize coroutines with threads.