[newlib-cygwin] Cygwin: FIFO: code simplifications.

[Ken Brown <kbrown@sourceware.org>]

https://sourceware.org/git/gitweb.cgi?p=newlib-cygwin.git;h=e91bc190ff685bca726024da353f0921660bc863

commit e91bc190ff685bca726024da353f0921660bc863
Author: Ken Brown <kbrown@cornell.edu>
Date:   Thu May 9 12:35:58 2019 -0400

    Cygwin: FIFO: code simplifications.
    
    There's no longer a need to consider the connect_evt after fork/exec.
    After stopping the listen_client thread, all client handlers should be
    in the fc_connected or fc_invalid states, so their connect_evt members
    won't be used again.
    
    Also remove code in fhandler_fifo::dup that just repeats things
    already done in stop_listen_client.

Diff:
---
 winsup/cygwin/fhandler_fifo.cc | 13 ++-----------
 1 file changed, 2 insertions(+), 11 deletions(-)

diff --git a/winsup/cygwin/fhandler_fifo.cc b/winsup/cygwin/fhandler_fifo.cc
index dab7df9..3fabbc3 100644
--- a/winsup/cygwin/fhandler_fifo.cc
+++ b/winsup/cygwin/fhandler_fifo.cc
@@ -966,9 +966,6 @@ fhandler_fifo::dup (fhandler_base *child, int flags)
 	  goto out;
 	}
     }
-  fhf->listen_client_thr = NULL;
-  fhf->lct_termination_evt = NULL;
-  fhf->fifo_client_unlock ();
   if (!reader || fhf->listen_client ())
     ret = 0;
   if (reader)
@@ -990,10 +987,7 @@ fhandler_fifo::fixup_after_fork (HANDLE parent)
   fork_fixup (parent, read_ready, "read_ready");
   fork_fixup (parent, write_ready, "write_ready");
   for (int i = 0; i < nhandlers; i++)
-    {
-      fc_handler[i].fh->fhandler_base::fixup_after_fork (parent);
-      fork_fixup (parent, fc_handler[i].connect_evt, "connect_evt");
-    }
+    fc_handler[i].fh->fhandler_base::fixup_after_fork (parent);
   if (reader && !listen_client ())
     debug_printf ("failed to start lct, %E");
 }
@@ -1013,8 +1007,5 @@ fhandler_fifo::set_close_on_exec (bool val)
   set_no_inheritance (read_ready, val);
   set_no_inheritance (write_ready, val);
   for (int i = 0; i < nhandlers; i++)
-    {
-      fc_handler[i].fh->fhandler_base::set_close_on_exec (val);
-      set_no_inheritance (fc_handler[i].connect_evt, val);
-    }
+    fc_handler[i].fh->fhandler_base::set_close_on_exec (val);
 }