matthauck · September 25, 2018 21:59 · Sep 25, 2018 · Sep 25, 2018 · Sep 25, 2018
diff --git a/_Cargo.lock → Cargo.lock b/_Cargo.lock → Cargo.lock
diff --git a/_Cargo.toml → Cargo.toml b/_Cargo.toml → Cargo.toml
diff --git a/Cargo.lock → _Cargo.lock b/Cargo.lock → _Cargo.lock
diff --git a/Cargo.toml → _Cargo.toml b/Cargo.toml → _Cargo.toml
diff --git a/main.rs b/main.rs
@@ -15,6 +15,7 @@ fn main() {
         .build()
         .unwrap();
 
+    // launch the main future
     runtime.spawn(futures::future::lazy(|| {
         run();
         futures::future::ok(())
@@ -25,6 +26,7 @@ fn main() {
 
 fn run() {
     for i in 0..NUM_JOBS {
+        // launch some future work
         tokio::spawn(futures::future::lazy(move || {
             println!("starting {}", i);
             let id = do_some_future_work(i).wait().unwrap();
@@ -37,6 +39,7 @@ fn run() {
 fn do_some_future_work(id: u32) -> oneshot::Receiver<u32> {
     let (tx, rx) = oneshot::channel::<u32>();
 
+    // launch some nested future work
     println!("spawning another future for {}", id);
     tokio::spawn(futures::future::lazy(move || {
         println!("sending response from the future for {}", id);

diff --git a/Cargo.lock b/Cargo.lock
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diff --git a/Cargo.toml b/Cargo.toml
@@ -0,0 +1,8 @@
+[package]
+name = "tokio-deadlock"
+version = "0.1.0"
+authors = ["Matt Hauck <[email protected]>"]
+
+[dependencies]
+tokio = "0.1.8"
+futures = "0.1.24"
diff --git a/main.rs b/main.rs
@@ -0,0 +1,48 @@
+extern crate futures;
+extern crate tokio;
+
+use futures::Future;
+use futures::sync::oneshot;
+
+const NUM_THREADS: usize = 2;
+const NUM_JOBS: u32 = 2;
+
+fn main() {
+    let mut threadpool =  tokio::executor::thread_pool::Builder::new();
+    threadpool.pool_size(NUM_THREADS);
+    let mut runtime = tokio::runtime::Builder::new()
+        .threadpool_builder(threadpool)
+        .build()
+        .unwrap();
+
+    runtime.spawn(futures::future::lazy(|| {
+        run();
+        futures::future::ok(())
+    }));
+
+    runtime.shutdown_on_idle().wait().unwrap();
+}
+
+fn run() {
+    for i in 0..NUM_JOBS {
+        tokio::spawn(futures::future::lazy(move || {
+            println!("starting {}", i);
+            let id = do_some_future_work(i).wait().unwrap();
+            println!("finished {} -- {}", i, id);
+            futures::future::ok(())
+        }));
+    }
+}
+
+fn do_some_future_work(id: u32) -> oneshot::Receiver<u32> {
+    let (tx, rx) = oneshot::channel::<u32>();
+
+    println!("spawning another future for {}", id);
+    tokio::spawn(futures::future::lazy(move || {
+        println!("sending response from the future for {}", id);
+        tx.send(id).unwrap();
+        futures::future::ok(())
+    }));
+
+    rx
+}
No results found