From c2a89682ca5c0686622e1af17f66fb8a6632dfa2 Mon Sep 17 00:00:00 2001
From: Rain <rain@sunshowers.io>
Date: Wed, 7 Aug 2024 05:15:11 +0000
Subject: [PATCH] [illumos] switch waker impl back to being pipe-based

In
https://github.com/tokio-rs/mio/commit/1133ed006b9e2a6dcf27edcdf54309ce648c3a15,
it looks like the waker implementation on illumos (perhaps inadvertently) got
switched from being pipe-based to being eventfd-based. Unfortunately, the
eventfd impl seems to break the `waker_multiple_wakeups_different_thread` on illumos:

```
thread 'waker_multiple_wakeups_different_thread' panicked at tests/waker.rs:157:5:
assertion failed: !events.is_empty()
```

While we separately figure out what might be going wrong in the eventfd impl,
it's worth switching back to the old pipe-based impl which is known to work,
and which does fix this test.
---
 src/sys/unix/mod.rs | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/sys/unix/mod.rs b/src/sys/unix/mod.rs
index b62238fb1..50f51456c 100644
--- a/src/sys/unix/mod.rs
+++ b/src/sys/unix/mod.rs
@@ -59,7 +59,6 @@ cfg_os_poll! {
             target_os = "espidf",
             target_os = "fuchsia",
             target_os = "hermit",
-            target_os = "illumos",
             target_os = "linux",
         )
     ), path = "waker/eventfd.rs")]
@@ -94,6 +93,7 @@ cfg_os_poll! {
         target_os = "dragonfly",
         target_os = "haiku",
         target_os = "hurd",
+        target_os = "illumos",
         target_os = "netbsd",
         target_os = "nto",
         target_os = "openbsd",
@@ -146,6 +146,7 @@ cfg_os_poll! {
             target_os = "openbsd",
             target_os = "redox",
             target_os = "solaris",
+            target_os = "illumos",
             target_os = "vita",
         ),
         // Hermit doesn't support pipes.