Auto merge of #30177 - retep998:handling-threads, r=alexcrichton

Allows a `HANDLE` to be extracted from a `JoinHandle` on Windows.
Allows a `pthread_t` to be extracted from a `JoinHandle` everywhere else.

Because https://github.com/rust-lang/rust/pull/29461 was closed.

r? @alexcrichton

1 files changed, 9 insertions, 0 deletions

diff --git a/src/libstd/thread/mod.rs b/src/libstd/thread/mod.rs
index eaa32cdb342..aef47aa5726 100644
--- a/src/libstd/thread/mod.rs
+++ b/src/libstd/thread/mod.rs
@@ -171,6 +171,7 @@ use sys::thread as imp;
 use sys_common::thread_info;
 use sys_common::unwind;
 use sys_common::util;
+use sys_common::{AsInner, IntoInner};
 use time::Duration;
 
 ////////////////////////////////////////////////////////////////////////////////
@@ -621,6 +622,14 @@ impl<T> JoinHandle<T> {
     }
 }
 
+impl<T> AsInner<imp::Thread> for JoinHandle<T> {
+    fn as_inner(&self) -> &imp::Thread { self.0.native.as_ref().unwrap() }
+}
+
+impl<T> IntoInner<imp::Thread> for JoinHandle<T> {
+    fn into_inner(self) -> imp::Thread { self.0.native.unwrap() }
+}
+
 fn _assert_sync_and_send() {
     fn _assert_both<T: Send + Sync>() {}
     _assert_both::<JoinHandle<()>>();