Initial revision

1 files changed, 34 insertions, 0 deletions

diff --git a/libpager/inhibit-term.c b/libpager/inhibit-term.c
new file mode 100644
index 00000000..9eb5f47c
--- /dev/null
+++ b/libpager/inhibit-term.c
@@ -0,0 +1,34 @@
+/* Locks to inhibit termination races for pager library
+   Copyright (C) 1994 Free Software Foundation
+
+   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. */
+
+
+/* Prevent this memory object from being terminated. */
+/* Must be called with interlock held. */
+void
+_pager_block_termination (struct pager *p)
+{
+  p->noterm++;
+}
+
+/* Allow termination again. */
+/* Must be called with interlock held. */
+void
+_pagerallow_termination (struct pager *p)
+{
+  if (!--p->noterm && p->termwaiting)
+    condition_broadcast (&p->wakeup);
+}