What's the correct way of limiting the Tokio (v 0.1.11) threadpool to n
OS native threads, where n
is an arbitrary number, preferably configurable at runtime?
As far as I can tell, it's possible to use Tokio in single threaded mode using using tokio_current_thread::block_on_all
instead of tokio::run
and tokio_current_thread::spawn
instead of tokio::spawn
.
I'd like a similar solution but for n >= 1
.
You can build a Tokio Runtime
object using tokio::runtime::Builder
. The builder offers a core_threads()
method that can be used to configure the number of threads, eg
let mut rt = runtime::Builder::new()
.core_threads(4)
.build()
.unwrap();
You can then use rt.spawn(some_future)
to run a future on this runtime.
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