From 78884caca030104557ca277dd3a41cefb70f5be8 Mon Sep 17 00:00:00 2001 From: hozan23 Date: Wed, 15 Nov 2023 17:16:39 +0300 Subject: improve the TaskGroup API the TaskGroup now holds an Executor instead of passing it when calling its spawn method also, define a global executor `Executor<'static>` and use static lifetime instead of a lifetime placeholder This improvement simplify the code for spawning a new task. There is no need to pass the executor around. --- p2p/examples/shared/mod.rs | 33 +++++++++++++++++++++++++++++++++ 1 file changed, 33 insertions(+) create mode 100644 p2p/examples/shared/mod.rs (limited to 'p2p/examples/shared') diff --git a/p2p/examples/shared/mod.rs b/p2p/examples/shared/mod.rs new file mode 100644 index 0000000..9a8e387 --- /dev/null +++ b/p2p/examples/shared/mod.rs @@ -0,0 +1,33 @@ +use std::{num::NonZeroUsize, thread}; + +use easy_parallel::Parallel; +use smol::{channel, future, future::Future}; + +use karyons_core::Executor; + +/// Returns an estimate of the default amount of parallelism a program should use. +/// see `std::thread::available_parallelism` +fn available_parallelism() -> usize { + thread::available_parallelism() + .map(NonZeroUsize::get) + .unwrap_or(1) +} + +/// Run a multi-threaded executor +pub fn run_executor(main_future: impl Future, ex: Executor<'_>) { + let (signal, shutdown) = channel::unbounded::<()>(); + + let num_threads = available_parallelism(); + + Parallel::new() + .each(0..(num_threads), |_| { + future::block_on(ex.run(shutdown.recv())) + }) + // Run the main future on the current thread. + .finish(|| { + future::block_on(async { + main_future.await; + drop(signal); + }) + }); +} -- cgit v1.2.3