1 files changed, 83 insertions, 0 deletions
diff --git a/src/irmd/reg/flow.h b/src/irmd/reg/flow.h
new file mode 100644
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+++ b/src/irmd/reg/flow.h
@@ -0,0 +1,83 @@
+/*
+ * Ouroboros - Copyright (C) 2016 - 2023
+ *
+ * The IPC Resource Manager - Registry - Flows
+ *
+ *    Dimitri Staessens <dimitri@ouroboros.rocks>
+ *    Sander Vrijders   <sander@ouroboros.rocks>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * 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., http://www.fsf.org/about/contact/.
+ */
+
+#ifndef OUROBOROS_IRMD_REG_FLOW_H
+#define OUROBOROS_IRMD_REG_FLOW_H
+
+#include <ouroboros/list.h>
+#include <ouroboros/qos.h>
+#include <ouroboros/shm_rbuff.h>
+#include <ouroboros/utils.h>
+
+#include <sys/types.h>
+#include <pthread.h>
+#include <time.h>
+
+enum flow_state {
+        FLOW_NULL = 0,
+        FLOW_ALLOC_PENDING,
+        FLOW_ALLOC_REQ_PENDING,
+        FLOW_ALLOCATED,
+        FLOW_DEALLOC_PENDING,
+        FLOW_DESTROY
+};
+
+struct reg_flow {
+        struct list_head   next;
+
+        int                flow_id;
+
+        pid_t              n_pid;
+        pid_t              n_1_pid;
+
+        qosspec_t          qs;
+        time_t             mpl;
+        buffer_t           data;
+
+        struct shm_rbuff * n_rb;
+        struct shm_rbuff * n_1_rb;
+
+        struct timespec    t0;
+
+        enum flow_state    state;
+        pthread_cond_t     cond;
+        pthread_mutex_t    mtx;
+};
+
+struct reg_flow * reg_flow_create(pid_t     n_pid,
+                                  pid_t     n_1_pid,
+                                  int       flow_id,
+                                  qosspec_t qs);
+
+void              reg_flow_destroy(struct reg_flow * f);
+
+enum flow_state   reg_flow_get_state(struct reg_flow * f);
+
+
+void              reg_flow_set_state(struct reg_flow * f,
+                                     enum flow_state   state);
+
+int               reg_flow_wait_state(struct reg_flow * f,
+                                      enum flow_state   state,
+                                      struct timespec * timeo);
+
+#endif /* OUROBOROS_IRMD_REG_FLOW_H */