[newlib-cygwin] Cygwin: fhandler_pipe: derive from fhandler_base

[Corinna Vinschen <corinna@sourceware.org>]

https://sourceware.org/git/gitweb.cgi?p=newlib-cygwin.git;h=72e083c4a01ef5c2bb51a7c05be315d249e442d1

commit 72e083c4a01ef5c2bb51a7c05be315d249e442d1
Author: Ken Brown <kbrown@cornell.edu>
Date:   Thu Aug 26 16:57:21 2021 -0400

    Cygwin: fhandler_pipe: derive from fhandler_base
    
    Previously fhandler_pipe was derived from fhandler_base_overlapped,
    which we are going to remove in a future commit.  Make minimal changes
    so that the build still succeeds.

Diff:
---
 winsup/cygwin/fhandler.h       |  5 ++---
 winsup/cygwin/fhandler_pipe.cc | 11 +++++------
 2 files changed, 7 insertions(+), 9 deletions(-)

diff --git a/winsup/cygwin/fhandler.h b/winsup/cygwin/fhandler.h
index 7c3cf8103..c612a3684 100644
--- a/winsup/cygwin/fhandler.h
+++ b/winsup/cygwin/fhandler.h
@@ -1238,14 +1238,14 @@ public:
   friend DWORD WINAPI flush_async_io (void *);
 };
 
-class fhandler_pipe: public fhandler_base_overlapped
+class fhandler_pipe: public fhandler_base
 {
 private:
   pid_t popen_pid;
+  size_t max_atomic_write;
 public:
   fhandler_pipe ();
 
-
   bool ispipe() const { return true; }
 
   void set_popen_pid (pid_t pid) {popen_pid = pid;}
@@ -1272,7 +1272,6 @@ public:
   {
     pc.free_strings ();
     *this = *reinterpret_cast<fhandler_pipe *> (x);
-    atomic_write_buf = NULL;
     _copy_from_reset_helper ();
   }
 
diff --git a/winsup/cygwin/fhandler_pipe.cc b/winsup/cygwin/fhandler_pipe.cc
index 7ab73a9d3..65ef70c25 100644
--- a/winsup/cygwin/fhandler_pipe.cc
+++ b/winsup/cygwin/fhandler_pipe.cc
@@ -21,7 +21,7 @@ details. */
 #include "shared_info.h"
 
 fhandler_pipe::fhandler_pipe ()
-  : fhandler_base_overlapped (), popen_pid (0)
+  : fhandler_base (), popen_pid (0)
 {
   max_atomic_write = DEFAULT_PIPEBUFSIZE;
   need_fork_fixup (true);
@@ -54,9 +54,8 @@ fhandler_pipe::init (HANDLE f, DWORD a, mode_t mode, int64_t uniq_id)
   set_ino (uniq_id);
   set_unique_id (uniq_id | !!(mode & GENERIC_WRITE));
   if (opened_properly)
-    setup_overlapped ();
-  else
-    destroy_overlapped ();
+    /* ... */
+    ;
   return 1;
 }
 
@@ -192,7 +191,7 @@ fhandler_pipe::dup (fhandler_base *child, int flags)
   ftp->set_popen_pid (0);
 
   int res;
-  if (get_handle () && fhandler_base_overlapped::dup (child, flags))
+  if (get_handle () && fhandler_base::dup (child, flags))
     res = -1;
   else
     res = 0;
@@ -359,7 +358,7 @@ fhandler_pipe::create (fhandler_pipe *fhs[2], unsigned psize, int mode)
   int res = -1;
   int64_t unique_id;
 
-  int ret = create (sa, &r, &w, psize, NULL, FILE_FLAG_OVERLAPPED, &unique_id);
+  int ret = create (sa, &r, &w, psize, NULL, 0, &unique_id);
   if (ret)
     __seterrno_from_win_error (ret);
   else if ((fhs[0] = (fhandler_pipe *) build_fh_dev (*piper_dev)) == NULL)