1 files changed, 84 insertions, 0 deletions
diff --git a/pflocal/sserver.c b/pflocal/sserver.c
new file mode 100644
index 00000000..7e00b323
--- /dev/null
+++ b/pflocal/sserver.c
@@ -0,0 +1,84 @@
+/* Server for socket ops
+
+   Copyright (C) 1995, 1997 Free Software Foundation, Inc.
+
+   Written by Miles Bader <miles@gnu.ai.mit.edu>
+
+   This program is free software; you can redistribute it and/or
+   modify it under the terms of the GNU General Public License as
+   published by the Free Software Foundation; either version 2, or (at
+   your option) any later version.
+
+   This program is distributed in the hope that it will be useful, but
+   WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, write to the Free Software
+   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
+
+#include <cthreads.h>
+
+#include <hurd/ports.h>
+
+/* A port bucket to handle SOCK_USERs and ADDRs.  */
+struct port_bucket *sock_port_bucket;
+
+/* ---------------------------------------------------------------- */
+
+/* True if there are threads servicing sock requests.  */
+static int sock_server_active = 0;
+static spin_lock_t sock_server_active_lock = SPIN_LOCK_INITIALIZER;
+
+/* A demuxer for socket operations.  */
+static int
+sock_demuxer (mach_msg_header_t *inp, mach_msg_header_t *outp)
+{
+  extern int socket_server (mach_msg_header_t *inp, mach_msg_header_t *outp);
+  extern int io_server (mach_msg_header_t *inp, mach_msg_header_t *outp);
+  return
+    socket_server (inp, outp)
+      || io_server (inp, outp)
+      || ports_interrupt_server (inp, outp)
+      || ports_notify_server (inp, outp);
+}
+
+/* Handle socket requests while there are sockets around.  */
+static void
+handle_sock_requests ()
+{
+  while (ports_count_bucket (sock_port_bucket) > 0)
+    {
+      ports_enable_bucket (sock_port_bucket);
+      ports_manage_port_operations_multithread (sock_port_bucket, sock_demuxer,
+						30*1000, 2*60*1000, 0);
+    }
+
+  /* The last service thread is about to exist; make this known.  */
+  spin_lock (&sock_server_active_lock);
+  sock_server_active = 0;
+  spin_unlock (&sock_server_active_lock);
+
+  /* Let the whole joke start once again.  */
+  ports_enable_bucket (sock_port_bucket);
+}
+
+/* Makes sure there are some request threads for sock operations, and starts
+   a server if necessary.  This routine should be called *after* creating the
+   port(s) which need server, as the server routine only operates while there
+   are any ports.  */
+void
+ensure_sock_server ()
+{
+  spin_lock (&sock_server_active_lock);
+  if (sock_server_active)
+    spin_unlock (&sock_server_active_lock);
+  else
+    {
+      sock_server_active = 1;
+      spin_unlock (&sock_server_active_lock);
+      cthread_detach (cthread_fork ((cthread_fn_t)handle_sock_requests,
+				    (any_t)0));
+    }
+}