Complete Modern C++ - Launch Policies

The video tutorial covers the renaming and setup of an operation function, focusing on passing and using a count, performing a sum, and returning the result. It explains the concept of shared state within tasks and how it interacts with futures, including the importance of checking future validity. The tutorial explores async execution and launch policies, particularly the deferred launch policy, and its impact on task execution. The video concludes with a summary and a preview of the next lecture on future's wait functions.

What is the role of the shared state in a task?

• It controls the execution speed of the task.

• It determines the priority of the task.

• It stores the result of the task for future retrieval.

• It manages the memory allocation for the task.

How does the default async operation execute tasks?

• Synchronously, blocking the main thread.

• In parallel, using multiple threads.

• Asynchronously, allowing the main thread to continue.

• Sequentially, one after the other.

What happens when the deferred launch policy is used?

• The task is executed immediately.

• The task is executed in parallel.

• The task is executed synchronously when the shared state is accessed.

• The task is executed asynchronously without delay.

When using deferred launch policy, when is the task executed?

• When the main thread is idle.

• When the system resources are available.

• When the shared state is accessed via get.

• When the task is created.

What indicates that a task is executing synchronously with deferred launch policy?

• The task output appears after the main message is printed.

• The task output is interleaved with other tasks.

• The task completes before any other output.

• The task output appears after a delay.