lib: Demultiplex the fast path

The fast path will now use an incoming ring buffer per flow per
process. This necessitated the development of a new method for the
asynchronous io call, which is now based on an event queue system for
scalability (fqueue). The ipcpd's and tools have been updated to this
API.

1 files changed, 63 insertions, 0 deletions

diff --git a/include/ouroboros/shm_flow_set.h b/include/ouroboros/shm_flow_set.h
new file mode 100644
index 00000000..32db5d36
--- /dev/null
+++ b/include/ouroboros/shm_flow_set.h
@@ -0,0 +1,63 @@
+/*
+ * Ouroboros - Copyright (C) 2016
+ *
+ * Management of flow_sets for fqueue
+ *
+ *    Dimitri Staessens <dimitri.staessens@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_SHM_FLOW_SET_H
+#define OUROBOROS_SHM_FLOW_SET_H
+
+#include <ouroboros/fqueue.h>
+
+#include <sys/time.h>
+
+struct shm_flow_set;
+
+struct shm_flow_set * shm_flow_set_create();
+
+void                  shm_flow_set_destroy(struct shm_flow_set * set);
+
+struct shm_flow_set * shm_flow_set_open(pid_t api);
+
+void                  shm_flow_set_close(struct shm_flow_set * set);
+
+void                  shm_flow_set_zero(struct shm_flow_set * shm_set,
+                                        ssize_t               idx);
+
+int                   shm_flow_set_add(struct shm_flow_set * shm_set,
+                                       ssize_t               idx,
+                                       int                   port_id);
+
+int                   shm_flow_set_has(struct shm_flow_set * shm_set,
+                                       ssize_t               idx,
+                                       int                   port_id);
+
+void                  shm_flow_set_del(struct shm_flow_set * shm_set,
+                                       ssize_t               idx,
+                                       int                   port_id);
+
+void                  shm_flow_set_notify(struct shm_flow_set * set,
+                                          int                   port_id);
+
+int                   shm_flow_set_wait(const struct shm_flow_set * shm_set,
+                                        ssize_t                     idx,
+                                        int *                       fqueue,
+                                        const struct timespec *     timeout);
+
+#endif /* OUROBOROS_SHM_FLOW_SET_H */