In ASIO, does an async operation start a new thread

Actually, it appears that if you run asio::io_service::run() in the main thread of execution, it blocks until all the operations are done You can decide to call asio::io_service::run() in a different thread

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06.11.2020

Cengizhan Pasaoglu

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Actually, it appears that if you run asio::io_serv...

So, I am confused. I want it async without thread, it is not possible in this case because without thread it blocks until all operations done. But with new thread, async operation can be done. Did I understand right?

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06.11.2020

🖖 Автор вопроса

Cengizhan Pasaoglu
So, I am confused. I want it async without thread,...

No, you need to call asio::io_service::run() to get the result(s) and to pass it/them to the callback

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06.11.2020

Cengizhan Pasaoglu

🖖
No, you need to call asio::io_service::run() to ge...

So which thread runs this callback?

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06.11.2020

Пользователь 61654

Cengizhan Pasaoglu
So, I am confused. I want it async without thread,...

Async to me is just threads with an abstraction later on top. 🙂

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07.11.2020

Ludovic 'Archivist' Lagouardette

Cengizhan Pasaoglu
So, I am confused. I want it async without thread,...

Me, writing a fiber implementation and a scheduler to solve that problem

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07.11.2020

Ihor · Accepted Answer

Ihor

It doesn't start a thread and is not blocking. You send an object that handles connection whenever OS creates it. Your program continues running. https://www.boost.org/doc/libs/1_74_0/doc/html/boost_asio/overview/core/basics.html

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06.11.2020

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In ASIO, does an async operation start a new thread

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