OpenSolaris Launch

1 files changed, 99 insertions, 0 deletions

diff --git a/usr/src/lib/libcurses/screen/delwin.c b/usr/src/lib/libcurses/screen/delwin.c
new file mode 100644
index 0000000000..651f646923
--- /dev/null
+++ b/usr/src/lib/libcurses/screen/delwin.c
@@ -0,0 +1,99 @@
+/*
+ * CDDL HEADER START
+ *
+ * The contents of this file are subject to the terms of the
+ * Common Development and Distribution License, Version 1.0 only
+ * (the "License").  You may not use this file except in compliance
+ * with the License.
+ *
+ * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
+ * or http://www.opensolaris.org/os/licensing.
+ * See the License for the specific language governing permissions
+ * and limitations under the License.
+ *
+ * When distributing Covered Code, include this CDDL HEADER in each
+ * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
+ * If applicable, add the following below this CDDL HEADER, with the
+ * fields enclosed by brackets "[]" replaced with your own identifying
+ * information: Portions Copyright [yyyy] [name of copyright owner]
+ *
+ * CDDL HEADER END
+ */
+/*
+ * Copyright 1997 Sun Microsystems, Inc.  All rights reserved.
+ * Use is subject to license terms.
+ */
+
+/*	Copyright (c) 1988 AT&T	*/
+/*	  All Rights Reserved	*/
+
+/*
+ * University Copyright- Copyright (c) 1982, 1986, 1988
+ * The Regents of the University of California
+ * All Rights Reserved
+ *
+ * University Acknowledgment- Portions of this document are derived from
+ * software developed by the University of California, Berkeley, and its
+ * contributors.
+ */
+
+#pragma ident	"%Z%%M%	%I%	%E% SMI"
+
+/*LINTLIBRARY*/
+
+#include	<stdlib.h>
+#include	<sys/types.h>
+#include	"curses_inc.h"
+
+/* This routine deletes a _window and releases it back to the system. */
+
+int
+delwin(WINDOW *win)
+{
+	int		i;
+	WINDOW		*par;
+
+	/* If we have children don't delte the window. */
+	if (win->_ndescs > 0)
+		return (ERR);
+
+	/*
+	 * If window is a pad, delete the padwin associated with it.
+	 * NOTE: We shouldn't care that the recursive call will decrement
+	 * ndescs for this window, since the window will be deleted anyhow.
+	 */
+
+	if (win->_padwin) {
+		win->_padwin->_maxy = win->_maxy;
+		(void) delwin(win->_padwin);
+	}
+	if (win->_parent == NULL) {
+		/* Delete all the memory associated with this window. */
+		for (i = win->_maxy; i-- > 0; ) {
+			free((char *)win->_y[i]);
+#ifdef	_VR3_COMPAT_CODE
+			if (_y16update)
+				free((char *)win->_y16[i]);
+#endif	/* _VR3_COMPAT_CODE */
+		}
+	} else {
+	/*
+	 * We are a subwin and we don't want to delete the memory since
+	 * it's shared by other windows.  We do want to decrement the
+	 * descendant count so that if there are no children left to a
+	 * particular window winsdelln.c will run in fast mode (look there).
+	 */
+		for (par = win->_parent; par != NULL; par = par->_parent)
+			par->_ndescs--;
+	}
+
+#ifdef	_VR3_COMPAT_CODE
+	if (_y16update)
+		free((char *)win->_y16);
+#endif	/* _VR3_COMPAT_CODE */
+
+	free((char *)win->_y);
+	free((char *)win->_firstch);
+	free((char *)win);
+	return (OK);
+}