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From: Ben Peart <peartben@gmail.com>
To: git@vger.kernel.org
Cc: gitster@pobox.com, benpeart@microsoft.com, pclouds@gmail.com,
	johannes.schindelin@gmx.de, David.Turner@twosigma.com,
	peff@peff.net
Subject: [PATCH v3 1/6] bswap: add 64 bit endianness helper get_be64
Date: Thu, 25 May 2017 14:36:07 -0400	[thread overview]
Message-ID: <20170525183612.3128-2-benpeart@microsoft.com> (raw)
In-Reply-To: <20170525183612.3128-1-benpeart@microsoft.com>

Add a new get_be64 macro to enable 64 bit endian conversions on memory
that may or may not be aligned.

Signed-off-by: Ben Peart <benpeart@microsoft.com>
---
 compat/bswap.h | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/compat/bswap.h b/compat/bswap.h
index d47c003544..f89fe7f4b5 100644
--- a/compat/bswap.h
+++ b/compat/bswap.h
@@ -158,6 +158,7 @@ static inline uint64_t git_bswap64(uint64_t x)
 
 #define get_be16(p)	ntohs(*(unsigned short *)(p))
 #define get_be32(p)	ntohl(*(unsigned int *)(p))
+#define get_be64(p)	ntohll(*(uint64_t *)(p))
 #define put_be32(p, v)	do { *(unsigned int *)(p) = htonl(v); } while (0)
 
 #else
@@ -170,6 +171,9 @@ static inline uint64_t git_bswap64(uint64_t x)
 	(*((unsigned char *)(p) + 1) << 16) | \
 	(*((unsigned char *)(p) + 2) <<  8) | \
 	(*((unsigned char *)(p) + 3) <<  0) )
+#define get_be64(p)	( \
+	((uint64_t)get_be32((unsigned char *)(p) + 0) << 32) | \
+	((uint64_t)get_be32((unsigned char *)(p) + 4) <<  0)
 #define put_be32(p, v)	do { \
 	unsigned int __v = (v); \
 	*((unsigned char *)(p) + 0) = __v >> 24; \
-- 
2.13.0.windows.1.9.gc201c67b71


  reply	other threads:[~2017-05-25 18:36 UTC|newest]

Thread overview: 14+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-05-25 18:36 [PATCH v3 0/6] Fast git status via a file system watcher Ben Peart
2017-05-25 18:36 ` Ben Peart [this message]
2017-05-25 18:36 ` [PATCH v3 2/6] dir: make lookup_untracked() available outside of dir.c Ben Peart
2017-05-25 18:36 ` [PATCH v3 3/6] fsmonitor: teach git to optionally utilize a file system monitor to speed up detecting new or changed files Ben Peart
2017-05-25 18:36 ` [PATCH v3 4/6] fsmonitor: add test cases for fsmonitor extension Ben Peart
2017-05-30 13:18   ` Christian Couder
2017-05-30 21:21     ` Ben Peart
2017-05-30 22:37       ` Junio C Hamano
2017-05-31  0:10         ` Ben Peart
2017-05-31  4:33       ` Christian Couder
2017-05-31 14:57         ` Ben Peart
2017-05-25 18:36 ` [PATCH v3 5/6] fsmonitor: add documentation for the " Ben Peart
2017-05-25 18:36 ` [PATCH v3 6/6] fsmonitor: add a sample query-fsmonitor hook script for Watchman Ben Peart
2017-05-31 13:21   ` Christian Couder

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