src/utils_llist.[ch]: Added a generic linked list implementation.

[collectd.git] / src / utils_llist.h

diff --git a/src/utils_llist.h b/src/utils_llist.h
new file mode 100644 (file)
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--- /dev/null
+++ b/src/utils_llist.h
@@ -0,0 +1,58 @@
+/**
+ * collectd - src/utils_llist.h
+ * Copyright (C) 2006 Florian Forster <octo at verplant.org>
+ *
+ * This program is free software; you can redistribute it and/
+ * or modify it under the terms of the GNU General Public Li-
+ * cence as published by the Free Software Foundation; only
+ * version 2 of the Licence is applicable.
+ *
+ * This program is distributed in the hope that it will be use-
+ * ful, but WITHOUT ANY WARRANTY; without even the implied war-
+ * ranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+ * See the GNU General Public Licence for more details.
+ *
+ * You should have received a copy of the GNU General Public
+ * Licence along with this program; if not, write to the Free
+ * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139,
+ * USA.
+ *
+ * Authors:
+ *   Florian Forster <octo at verplant.org>
+ */
+
+#ifndef UTILS_LLIST_H
+#define UTILS_LLIST_H 1
+
+/*
+ * Data types
+ */
+struct llentry_s
+{
+       char *key;
+       void *value;
+       struct llentry_s *next;
+};
+typedef struct llentry_s llentry_t;
+
+struct llist_s;
+typedef struct llist_s llist_t;
+
+/*
+ * Functions
+ */
+llist_t *llist_create (void);
+void llist_destroy (llist_t *l);
+
+llentry_t *llentry_create (const char *key, void *value);
+void llentry_destroy (llentry_t *e);
+
+void llist_append (llist_t *l, llentry_t *e);
+void llist_prepend (llist_t *l, llentry_t *e);
+
+llentry_t *llist_search (llist_t *l, const char *key);
+
+llentry_t *llist_head (llist_t *l);
+llentry_t *llist_tail (llist_t *l);
+
+#endif /* UTILS_LLIST_H */