From 15438d5a56acfd08545a11630821179334eb6979 Mon Sep 17 00:00:00 2001
From: Jared Hance <jaredhance@gmail.com>
Date: Fri, 2 Mar 2012 21:31:15 -0500
Subject: [PATCH] Add threaded versions of functions in symlinks.c.
check_leading_path() and has_dirs_only_path() both always use the default
cache, which could be a caveat for adding parallelism (which is a concern
and even a GSoC proposal).
Reimplement these two in terms of new threaded_check_leading_path() and
threaded_has_dirs_only_path() that take their own copy of the cache.
Signed-off-by: Jared Hance <jaredhance@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
---
cache.h | 2 ++
symlinks.c | 28 ++++++++++++++++++++++++++--
2 files changed, 28 insertions(+), 2 deletions(-)
diff --git a/cache.h b/cache.h
index 3a8e1258e7..26ca955dc9 100644
--- a/cache.h
+++ b/cache.h
@@ -950,7 +950,9 @@ struct cache_def {
extern int has_symlink_leading_path(const char *name, int len);
extern int threaded_has_symlink_leading_path(struct cache_def *, const char *, int);
extern int check_leading_path(const char *name, int len);
+extern int threaded_check_leading_path(struct cache_def *cache, const char *name, int len);
extern int has_dirs_only_path(const char *name, int len, int prefix_len);
+extern int threaded_has_dirs_only_path(struct cache_def *cache, const char *name, int len, int prefix_len);
extern void schedule_dir_for_removal(const char *name, int len);
extern void remove_scheduled_dirs(void);
diff --git a/symlinks.c b/symlinks.c
index 034943bda0..290036744b 100644
--- a/symlinks.c
+++ b/symlinks.c
@@ -219,7 +219,20 @@ int has_symlink_leading_path(const char *name, int len)
*/
int check_leading_path(const char *name, int len)
{
- struct cache_def *cache = &default_cache; /* FIXME */
+ return threaded_check_leading_path(&default_cache, name, len);
+}
+
+/*
+ * Return zero if path 'name' has a leading symlink component or
+ * if some leading path component does not exists.
+ *
+ * Return -1 if leading path exists and is a directory.
+ *
+ * Return path length if leading path exists and is neither a
+ * directory nor a symlink.
+ */
+int threaded_check_leading_path(struct cache_def *cache, const char *name, int len)
+{
int flags;
int match_len = lstat_cache_matchlen(cache, name, len, &flags,
FL_SYMLINK|FL_NOENT|FL_DIR, USE_ONLY_LSTAT);
@@ -240,7 +253,18 @@ int check_leading_path(const char *name, int len)
*/
int has_dirs_only_path(const char *name, int len, int prefix_len)
{
- struct cache_def *cache = &default_cache; /* FIXME */
+ return threaded_has_dirs_only_path(&default_cache, name, len, prefix_len);
+}
+
+/*
+ * Return non-zero if all path components of 'name' exists as a
+ * directory. If prefix_len > 0, we will test with the stat()
+ * function instead of the lstat() function for a prefix length of
+ * 'prefix_len', thus we then allow for symlinks in the prefix part as
+ * long as those points to real existing directories.
+ */
+int threaded_has_dirs_only_path(struct cache_def *cache, const char *name, int len, int prefix_len)
+{
return lstat_cache(cache, name, len,
FL_DIR|FL_FULLPATH, prefix_len) &
FL_DIR;
--
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