[PATCH 5/7] proc: improve the message_demuxer function

[Justus Winter]

Handle multiple request types as recommended by the Mach Server
Writer's Guide section 4, subsection "Handling Multiple Request
Types".  This avoids initializing the reply message in every X_server
function.  The reply message has already been properly initialized in
libports, so there is no need to call mig_reply_setup.

* proc/main.c (message_demuxer): Improve the demuxer function.
---
 proc/main.c |   30 ++++++++++++++++++------------
 1 file changed, 18 insertions(+), 12 deletions(-)

diff --git a/proc/main.c b/proc/main.c
index aaaa5a7..5d6dc21 100644
--- a/proc/main.c
+++ b/proc/main.c
@@ -38,18 +38,24 @@ int
 message_demuxer (mach_msg_header_t *inp,
                 mach_msg_header_t *outp)
 {
-  extern int process_server (mach_msg_header_t *, mach_msg_header_t *);
-  extern int notify_server (mach_msg_header_t *, mach_msg_header_t *);
-  extern int proc_exc_server (mach_msg_header_t *, mach_msg_header_t *);
-  int status;
-
-  pthread_mutex_lock (&global_lock);
-  status = (process_server (inp, outp)
-           || notify_server (inp, outp)
-           || ports_interrupt_server (inp, outp)
-           || proc_exc_server (inp, outp));
-  pthread_mutex_unlock (&global_lock);
-  return status;
+  mig_routine_t process_server_routine (mach_msg_header_t *);
+  mig_routine_t notify_server_routine (mach_msg_header_t *);
+  mig_routine_t ports_interrupt_server_routine (mach_msg_header_t *);
+  mig_routine_t proc_exc_server_routine (mach_msg_header_t *);
+
+  mig_routine_t routine;
+  if ((routine = process_server_routine (inp)) ||
+      (routine = notify_server_routine (inp)) ||
+      (routine = ports_interrupt_server_routine (inp)) ||
+      (routine = proc_exc_server_routine (inp)))
+    {
+      pthread_mutex_lock (&global_lock);
+      (*routine) (inp, outp);
+      pthread_mutex_unlock (&global_lock);
+      return TRUE;
+    }
+  else
+    return FALSE;
 }
 
 pthread_mutex_t global_lock = PTHREAD_MUTEX_INITIALIZER;
-- 
1.7.10.4