server: account for premature grandparent death

When daemonizing, it is possible for the grandparent to be
terminated by another process before the master can notify
it.  Do not abort the master in this case.

unicorn commit 27ae210dde9228cfa96ea6b0f3a7e4047d3f70a4

1 files changed, 5 insertions, 1 deletions

diff --git a/lib/yahns/server.rb b/lib/yahns/server.rb
index ddba8f2..a6462df 100644
--- a/lib/yahns/server.rb
+++ b/lib/yahns/server.rb
@@ -203,7 +203,11 @@ class Yahns::Server # :nodoc:
 
   def daemon_ready
     @daemon_pipe.respond_to?(:syswrite) or return
-    @daemon_pipe.syswrite("#$$")
+    begin
+      @daemon_pipe.syswrite("#$$")
+    rescue => e
+      @logger.warn("grandparent died too soon?: #{e.message} (#{e.class})")
+    end
     @daemon_pipe.close
     @daemon_pipe = true # for SIGWINCH
   end