GRPC core library. Multithreading.

[Денис Ваксман]

Dear All,

I'm working on developing a library for communication via gRPC. High-level API doesn't fit the project requirements, so I chose the grpc-core library as the basement.

But I've noticed that the grpc-core library starts up several threads on grpc_init().

It's critical for my situation and prevents me from using grpc-core at all.

Is there some way to disable multi-threading in the grpc-core library?

I need only gRPC Client functionality and it's ok if server mode doesn't work.

Looking forward to your reply,

Denis V.

[Nicolas Noble]

The grpc-core library isn't public API. There is no guarantee of stable API from it. Also, multi-threading is necessary for a variety of reasons, and it isn't possible to disable it.

You may want to check https://github.com/Juniper/grpc-c

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[Sivaram Kumar Battu]

Hi Denis,

You can try the following at your own risk/adventure, I am not sure what you will be missing out and how much of an impact you might have for your use case.

Comment start_threads() in here

https://github.com/grpc/grpc/blob/master/src/core/lib/iomgr/timer_manager.cc#L311

Change 'true' to 'false' in SetThreading()

https://github.com/grpc/grpc/blob/ca60aac817af646ff22971403fd70d18c9523187/src/core/lib/iomgr/executor.cc#L98

As Nicholas mentioned this part isn't a public API and even if it works now, it is fragile for future updates.

Best, -R.