lib: dev: Provide a set of fds to flow_select

The flow_select call now takes as a parameter a flow_set_t, which
specifies a set of flow descriptors that will unblock the select call
when an SDU for one of them arrives. The select call has been moved to
its own header.

1 files changed, 50 insertions, 0 deletions

diff --git a/include/ouroboros/select.h b/include/ouroboros/select.h
new file mode 100644
index 00000000..9e0b8fec
--- /dev/null
+++ b/include/ouroboros/select.h
@@ -0,0 +1,50 @@
+/*
+ * Ouroboros - Copyright (C) 2016
+ *
+ * A select call for flows
+ *
+ *    Dimitri Staessens <dimitri.staessens@intec.ugent.be>
+ *    Sander Vrijders   <sander.vrijders@intec.ugent.be>
+ *
+ * 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_SELECT_H
+#define OUROBOROS_SELECT_H
+
+#include <stdbool.h>
+#include <time.h>
+
+struct flow_set;
+
+struct flow_set * flow_set_create();
+
+void              flow_set_destroy(struct flow_set * set);
+
+void              flow_set_zero(struct flow_set * set);
+
+void              flow_set_add(struct flow_set * set,
+                               int               fd);
+
+void              flow_set_del(struct flow_set * set,
+                               int               fd);
+
+bool              flow_set_has(struct flow_set * set,
+                               int               fd);
+
+int               flow_select(struct flow_set *       set,
+                              const struct timespec * timeout);
+
+#endif /* OUROBOROS_SELECT_H */