In case the prefix string is a single char avoid a
costly call to strlen() + strncmp()
With this patch git log with --pretty=format option
is 10% faster
With suggestions by Junio C Hamano
Signed-off-by: Marco Costalba <mcostalba@xxxxxxxxx>
---
git-compat-util.h | 4 ++++
1 files changed, 4 insertions(+), 0 deletions(-)
diff --git a/git-compat-util.h b/git-compat-util.h
index 79eb10e..e26b684 100644
--- a/git-compat-util.h
+++ b/git-compat-util.h
@@ -398,6 +398,10 @@ static inline int sane_case
static inline int prefixcmp(const char *str, const char *prefix)
{
+ /* shortcut common case of a single char prefix */
+ if (prefix && !prefix[1] && str)
+ return *str - *prefix;
+
return strncmp(str, prefix, strlen(prefix));
}
--
1.5.4.rc2-dirty
-
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