cheney copying collector

1 files changed, 39 insertions, 0 deletions

diff --git a/uns.c b/uns.c
new file mode 100644
index 0000000..4d6eaad
--- /dev/null
+++ b/uns.c
@@ -0,0 +1,39 @@
+/* Copyright (C) 2024 Peter McGoron
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, 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 Lesser General Public
+ * License along with this program. If not, see
+ * <https://www.gnu.org/licenses/>.
+*/
+
+#include "uns.h"
+
+void uns_root_add(struct uns_gc *gc, struct uns_root_list *root)
+{
+	root->prev = NULL;
+	root->next = gc->roots;
+	gc->roots = root;
+}
+
+void uns_root_remove(struct uns_gc *gc, struct uns_root_list *root)
+{
+	if (root->prev) {
+		root->prev->next = root->next;
+	}
+	if (root->next) {
+		root->next->prev = root->prev;
+	}
+
+	if (gc->roots == root)
+		gc->roots = root->next;
+	root->prev = root->next = NULL;
+}