From: asterix <asterix@38d2e660-2303-0410-9eaa-f027e97ec537>
Date: Wed, 11 Jan 2012 14:40:09 +0000 (+0000)
Subject: fifobuf: introduce DECLARE_FIFO() macro
X-Git-Url: https://codewiz.org/gitweb?p=bertos.git;a=commitdiff_plain;h=76c3a84c29c451d164575134b29986f3bbc42656

fifobuf: introduce DECLARE_FIFO() macro

Introduce a macro to declare a static and correctly initialized
FIFOBuffer.

git-svn-id: https://src.develer.com/svnoss/bertos/trunk@5234 38d2e660-2303-0410-9eaa-f027e97ec537
---

diff --git a/bertos/struct/fifobuf.h b/bertos/struct/fifobuf.h
index f58e1c0a..117431be 100644
--- a/bertos/struct/fifobuf.h
+++ b/bertos/struct/fifobuf.h
@@ -92,6 +92,19 @@ typedef struct FIFOBuffer
 	)
 
 
+/**
+ * Declare a static fifo buffer
+ */
+#define DECLARE_FIFO(_name, _ptr, _size)			\
+	FIFOBuffer _name =					\
+	{							\
+		.head = (_ptr),					\
+		.tail = (_ptr),					\
+		.begin = (_ptr),				\
+		.end = (_ptr) + (_size) - 1,			\
+	};							\
+	STATIC_ASSERT((_size) > 1)
+
 /**
  * Check whether the fifo is empty
  *