Import tokio-0.2.22

Test: None
Change-Id: Iea7ee5e62819c9b16dbfad05a6146775df72506a

1 files changed, 43 insertions, 0 deletions

diff --git a/src/runtime/blocking/mod.rs b/src/runtime/blocking/mod.rs
new file mode 100644
index 0000000..0b36a75
--- /dev/null
+++ b/src/runtime/blocking/mod.rs
@@ -0,0 +1,43 @@
+//! Abstracts out the APIs necessary to `Runtime` for integrating the blocking
+//! pool. When the `blocking` feature flag is **not** enabled, these APIs are
+//! shells. This isolates the complexity of dealing with conditional
+//! compilation.
+
+cfg_blocking_impl! {
+    mod pool;
+    pub(crate) use pool::{spawn_blocking, try_spawn_blocking, BlockingPool, Spawner};
+
+    mod schedule;
+    mod shutdown;
+    pub(crate) mod task;
+
+    use crate::runtime::Builder;
+
+    pub(crate) fn create_blocking_pool(builder: &Builder, thread_cap: usize) -> BlockingPool {
+        BlockingPool::new(builder, thread_cap)
+
+    }
+}
+
+cfg_not_blocking_impl! {
+    use crate::runtime::Builder;
+    use std::time::Duration;
+
+    #[derive(Debug, Clone)]
+    pub(crate) struct BlockingPool {}
+
+    pub(crate) use BlockingPool as Spawner;
+
+    pub(crate) fn create_blocking_pool(_builder: &Builder, _thread_cap: usize) -> BlockingPool {
+        BlockingPool {}
+    }
+
+    impl BlockingPool {
+        pub(crate) fn spawner(&self) -> &BlockingPool {
+            self
+        }
+
+        pub(crate) fn shutdown(&mut self, _duration: Option<Duration>) {
+        }
+    }
+}