1 files changed, 78 insertions, 0 deletions
diff --git a/debian/grub-extras/disabled/gpxe/src/core/refcnt.c b/debian/grub-extras/disabled/gpxe/src/core/refcnt.c
new file mode 100644
index 0000000..f2286ca
--- /dev/null
+++ b/debian/grub-extras/disabled/gpxe/src/core/refcnt.c
@@ -0,0 +1,78 @@
+/*
+ * Copyright (C) 2007 Michael Brown <mbrown@fensystems.co.uk>.
+ *
+ * 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 of the
+ * License, or 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.
+ */
+
+FILE_LICENCE ( GPL2_OR_LATER );
+
+#include <stdlib.h>
+#include <gpxe/refcnt.h>
+
+/** @file
+ *
+ * Reference counting
+ *
+ */
+
+/**
+ * Increment reference count
+ *
+ * @v refcnt		Reference counter, or NULL
+ * @ret refcnt		Reference counter
+ *
+ * If @c refcnt is NULL, no action is taken.
+ */
+struct refcnt * ref_get ( struct refcnt *refcnt ) {
+
+	if ( refcnt ) {
+		refcnt->refcnt++;
+		DBGC2 ( refcnt, "REFCNT %p incremented to %d\n",
+			refcnt, refcnt->refcnt );
+	}
+	return refcnt;
+}
+
+/**
+ * Decrement reference count
+ *
+ * @v refcnt		Reference counter, or NULL
+ *
+ * If the reference count decreases below zero, the object's free()
+ * method will be called.
+ *
+ * If @c refcnt is NULL, no action is taken.
+ */
+void ref_put ( struct refcnt *refcnt ) {
+
+	if ( ! refcnt )
+		return;
+
+	refcnt->refcnt--;
+	DBGC2 ( refcnt, "REFCNT %p decremented to %d\n",
+		refcnt, refcnt->refcnt );
+
+	if ( refcnt->refcnt >= 0 )
+		return;
+
+	if ( refcnt->free ) {
+		DBGC ( refcnt, "REFCNT %p being freed via method %p\n",
+		       refcnt, refcnt->free );
+		refcnt->free ( refcnt );
+	} else {
+		DBGC ( refcnt, "REFCNT %p being freed\n", refcnt );
+		free ( refcnt );
+	}
+}