Name: September - Corolib: distributed programming with C++ coroutines
Start: 2022-09-07T19:00:00+02:00
End: 2022-09-07T22:00:00+02:00

Our monthly meeting features with a talk about Corolib: distributed programming with C++ coroutines by Johan Vanslembrouck

Agenda
19:00 Socializing in Lounge
19:15 Welcome message
19:45 **An introduction to time travel debugging (**Sponsor message from [Undo](https://www.undo.io))
20:30 Talk
21:30 Talk Q & A debate in room
21:xx - Socializing / End

Details:
Distributed applications often use remote method invocation (RMI) to allow a client application to make use of the services of a server application. A constant in many of these applications is the use of either a synchronous two-way RMI style, or an asynchronous style where the invocation is split into a request and a response that has to be handled at a later place and time in the application. This leads to a very different programming style, with programs having to be completely rewritten if the synchronous style was considered to be not efficient enough and a transition has to be made to an asynchronous style.
My talk will demonstrate that we can make a synchronous-style RMI application behave in a responsive, asynchronous way using C++ coroutines by making only minor changes to the original program. This is the purpose of the [corolib library](https://github.com/JohanVanslembrouck/corolib). Corolib uses Boost ASIO and Qt for communication between applications, without any changes to the underlying libraries (Boost or Qt).
The major objectives of corolib are:
\- Try to accomplish as much coroutine functionality as possible with a minimum of code
\- Allow a novice to learn about coroutines by following program traces
\- Demonstrate the strict separation of the asynchronous communication library from its use by coroutines
\- Demonstrate that synchronous style programs can be executed in a responsive\, asynchronous way with only minor modifications to the original program
\- Demonstrate that coroutines can be used to replace threads\, running the whole application on the main thread

JensW

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