From: Willy Tarreau <w@1wt.eu>
Date: Fri, 15 Jun 2018 15:50:15 +0000 (+0200)
Subject: MINOR: buffer: introduce b_realign_if_empty()
X-Git-Tag: v1.9-dev1~161
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=f17f19f1a796ea9bbb4e31e7bdd0589f08a64e7e;p=thirdparty%2Fhaproxy.git

MINOR: buffer: introduce b_realign_if_empty()

Many places deal with buffer realignment after data removal. The method
is always the same : if the buffer is empty, set its pointer to the origin.
Let's have a function for this so that we have less code to change with the
new API.
---

diff --git a/include/common/buf.h b/include/common/buf.h
index 6d1a8c0bea..564e0ebad3 100644
--- a/include/common/buf.h
+++ b/include/common/buf.h
@@ -322,6 +322,13 @@ static inline void b_set_data(struct buffer *b, size_t len)
 	}
 }
 
+/* b_realign_if_empty() : realigns a buffer if it's empty */
+static inline void b_realign_if_empty(struct buffer *b)
+{
+	if (!b_data(b))
+		b->p = b->data;
+}
+
 
 #endif /* _COMMON_BUF_H */