sigevent: use non-blocking wakeup

There's almost no chance of blocking here, but better to
be safe than sorry inside signal handlers.  We would
get the wakeup even if the pipe/event fd blocks.

2 files changed, 2 insertions, 2 deletions

diff --git a/lib/yahns/sigevent_efd.rb b/lib/yahns/sigevent_efd.rb
index 8f10ad6..c65e13f 100644
--- a/lib/yahns/sigevent_efd.rb
+++ b/lib/yahns/sigevent_efd.rb
@@ -8,7 +8,7 @@ class Yahns::Sigevent < SleepyPenguin::EventFD # :nodoc:
   end
 
   def sev_signal
-    incr(1) # eventfd_write
+    incr(1, true) # eventfd_write
   end
 
   def yahns_step
diff --git a/lib/yahns/sigevent_pipe.rb b/lib/yahns/sigevent_pipe.rb
index ee0f14e..32cfbae 100644
--- a/lib/yahns/sigevent_pipe.rb
+++ b/lib/yahns/sigevent_pipe.rb
@@ -13,7 +13,7 @@ class Yahns::Sigevent # :nodoc:
   end
 
   def sev_signal
-    @wr.kgio_write(".")
+    @wr.kgio_trywrite(".")
   end
 
   def yahns_step