ipcpd: Add timerwheel

The timerwheel can be used to defer work to a certain timeslot in the
future.

1 files changed, 39 insertions, 0 deletions

diff --git a/src/ipcpd/timerwheel.h b/src/ipcpd/timerwheel.h
new file mode 100644
index 00000000..d10410ca
--- /dev/null
+++ b/src/ipcpd/timerwheel.h
@@ -0,0 +1,39 @@
+/*
+ * Ouroboros - Copyright (C) 2016
+ *
+ * Ring buffer for incoming SDUs
+ *
+ *    Dimitri Staessens <[email protected]>
+ *
+ * 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
+ * (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.
+ */
+
+#ifndef OUROBOROS_IPCPD_TIMERWHEEL_H
+#define OUROBOROS_IPCPD_TIMERWHEEL_H
+
+struct timerwheel;
+
+struct timerwheel * timerwheel_create(unsigned int resolution,
+                                      unsigned int max_delay);
+
+void                timerwheel_destroy(struct timerwheel * tw);
+
+int                 timerwheel_add(struct timerwheel * tw,
+                                   void (* func)(void *),
+                                   void *       arg,
+                                   size_t       arg_len,
+                                   unsigned int delay); /* ms */
+
+#endif /* OUROBOROS_IPCPD_TIMERWHEEL_H */