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-rw-r--r--src/mpmc_ptr_ring.h6
1 files changed, 6 insertions, 0 deletions
diff --git a/src/mpmc_ptr_ring.h b/src/mpmc_ptr_ring.h
index 3a59bf1..f437ae3 100644
--- a/src/mpmc_ptr_ring.h
+++ b/src/mpmc_ptr_ring.h
@@ -1,8 +1,12 @@
/* SPDX-License-Identifier: GPL-2.0
*
* Copyright (C) 2018 Jonathan Neuschäfer
+ * Copyright (C) 2018 Thomas Gschwantner <tharre3@gmail.com>. All Rights Reserved.
*/
+#ifndef MPMC_RING_PTR_H
+#define MPMC_RING_PTR_H
+
/*
* This is an implementation of a Multi-Producer/Multi-Consumer (MPMC) queue,
* strongly inspired by ConcurrencyKit[1], and Linux's own ptr_ring.h.
@@ -207,3 +211,5 @@ static inline void __mpmc_ptr_ring_discard_one(struct mpmc_ptr_ring *r)
smp_mb__before_atomic();
atomic_inc(&r->consumer_head);
}
+
+#endif /* MPMC_RING_PTR_H */