From 18cfa8b70ce9a6a3572908115f98211f3fa9a367 Mon Sep 17 00:00:00 2001
From: Marcus Brinkmann <marcus@gnu.org>
Date: Sun, 8 Sep 2002 21:55:59 +0000
Subject: libcons/ 2002-09-09  Marcus Brinkmann  <marcus@gnu.org>

	* vcons-remove.c: New file.
	* Makefile (SRCS): Add vcons-destroy.c.
	* cons.h: New type vcons_list_t.
	(struct vcons_list): New structure.
	(struct cons_notify): Remove VCONS member.
	(struct vcons): Remove members NEXT, PREV and NOTIFY.  Add the
	notify structure to the top to make it possible to use a vcons as
	a port.  New member VCONS_ENTRY.
	(struct cons): Change type of members vcons_list and vcons_last to
	vcons_list_t.  Remove member active.
	(cons_vcons_add): Change prototype to match new definition.
	(cons_vcons_remove): Likewise.
	(cons_switch): Likewise.
	(cons_lookup): Likewise.
	(cons_vcons_open): Likewise.
	(cons_vcons_destroy): New prototype.
	* cons-lookup.c (cons_lookup): Change type of R_VCONS argument
	vcons_list_t.  Change type of previous_vcons and vcons variables
	to vcons_list_t.  Append _entry to all these variables.
	Don't allocate and initialize a vcons_t, but a vcons_list_t.
	After this has been added to the list, call cons_vcons_add.
	* cons-switch.c: Do not include <error.h>
	(cons_switch): Add arguments ACTIVE_ID and R_VCONS.  New variable
	ERR and VCONS_ENTRY.  Remove variable ACTIVE.  Do not keep track
	of active console.  Instead, look it up using ACTIVE_ID.  Lock the
	returned console.  Call cons_vcons_open, not cons_vcons_activate.
	* dir-changed.c (add_one): Change VCONS to VCONS_ENTRY and its
	type from vcons_t to vcons_list_t to follow cons_lookup change.
	(lookup_one): Likewise.
	(cons_S_dir_changed): Likewise.
	* file-changed.c (cons_S_file_changed): Cast NOTIFY to VCONS.
	Check that NOTIFY->cons is not set instead that NOTIFY->vcons is.
	* init-init.c (cons_init): Pass cons_vcons_destroy as
	clean_routine to ports_create_class.
	Don't initialize CONS->active, nor DIR_NOTIFY_PORT->vcons.
	* vcons-add.c (cons_vcons_add): Change argument VCONS to CONS and
	VCONS_ENTRY.  Don't do anything here (the user must implement it
	all).
	* vcons-close.c: Don't include <errno.h>, <unistd.h>, <stdio.h>,
	<sys/mman.h>, <sys/fcntl.h>, <mach.h>.  Include <assert.h>,
	<hurd/ports.h> and <cthreads.h>.
	(cons_vcons_close): Clear VCONS->vcons_entry->vcons.  Derefence
	and destroy VCONS.
	* vcons-open.c (cons_vcons_open): Change arguments from VCONS to
	CONS, VCONS_ENTRY and R_VCONS.  New variable VCONS.  Set up VCONS
	as a port, and request notification messages on that.
	* vcons-remove.c: Do not include <errno.h>.
	(cons_vcons_remove): Assert that VCONS_ENTRY does not have an open
	VCONS.

utils/
2002-09-09  Marcus Brinkmann  <marcus@gnu.org>

	* console-ncurses.c: New global variable global_lock.
	(main): Initialize global_lock.
	(cons_vcons_activate): Removed.
	(console_switch): New function.
	(cons_vcons_add): New function.
	(input_loop): Call console_switch, not cons_switch.  Do not take
	active_vcons lock but global_lock.
	(cons_vcons_update): Take global lock.
	(cons_vcons_set_cursor_pos): Likewise.
	(cons_vcons_set_cursor_status): Likewise.
	(cons_vcons_scroll): Likewise.
	(cons_vcons_write): Likewise.
	(cons_vcons_beep): Likewise.
	(cons_vcons_flash): Likewise.
---
 libcons/vcons-close.c | 38 ++++++++++++++++----------------------
 1 file changed, 16 insertions(+), 22 deletions(-)

(limited to 'libcons/vcons-close.c')

diff --git a/libcons/vcons-close.c b/libcons/vcons-close.c
index 584c3e61..33a38982 100644
--- a/libcons/vcons-close.c
+++ b/libcons/vcons-close.c
@@ -18,34 +18,28 @@
    along with this program; if not, write to the Free Software
    Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111, USA. */
 
-#include <errno.h>
-#include <unistd.h>
-#include <stdio.h>
-#include <sys/mman.h>
-#include <sys/fcntl.h>
+#include <assert.h>
 
 #include <hurd.h>
-#include <mach.h>
+#include <hurd/ports.h>
+#include <cthreads.h>
 
 #include "cons.h"
 
-/* Close the virtual console VCONS.  VCONS->cons is locked.  */
+/* Close the virtual console VCONS.  */
 void
 cons_vcons_close (vcons_t vcons)
 {
-  if (vcons->input >= 0)
-    {
-      close (vcons->input);
-      vcons->input = -1;
-    }
-  if (vcons->display != MAP_FAILED)
-    {
-      munmap (vcons->display, vcons->display_size);
-      vcons->display = MAP_FAILED;
-    }
-  if (vcons->notify)
-    {
-      ports_destroy_right (vcons->notify);
-      vcons->notify = NULL;
-    }
+  cons_t cons = vcons->cons;
+  vcons_list_t vcons_entry = vcons->vcons_entry;
+
+  mutex_lock (&cons->lock);
+  /* The same virtual console should never be opened twice.  */
+  assert (vcons_entry->vcons == vcons);
+  vcons_entry->vcons = NULL;
+  mutex_unlock (&cons->lock);
+
+  /* Destroy the port.  */
+  ports_port_deref (vcons);
+  ports_destroy_right (vcons);
 }
-- 
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