Merge branch 'tz/build-tech-midx-doc'
A documentation page that is referred to by other pages was not
built by mistake, which has been corrected.
* tz/build-tech-midx-doc:
Documentation: build technical/multi-pack-index
diff --git a/Documentation/config/index.txt b/Documentation/config/index.txt
index 4b94b6b..f181503 100644
--- a/Documentation/config/index.txt
+++ b/Documentation/config/index.txt
@@ -1,3 +1,19 @@
+index.recordEndOfIndexEntries::
+ Specifies whether the index file should include an "End Of Index
+ Entry" section. This reduces index load time on multiprocessor
+ machines but produces a message "ignoring EOIE extension" when
+ reading the index using Git versions before 2.20. Defaults to
+ 'true' if index.threads has been explicitly enabled, 'false'
+ otherwise.
+
+index.recordOffsetTable::
+ Specifies whether the index file should include an "Index Entry
+ Offset Table" section. This reduces index load time on
+ multiprocessor machines but produces a message "ignoring IEOT
+ extension" when reading the index using Git versions before 2.20.
+ Defaults to 'true' if index.threads has been explicitly enabled,
+ 'false' otherwise.
+
index.threads::
Specifies the number of threads to spawn when loading the index.
This is meant to reduce index load time on multiprocessor machines.
diff --git a/builtin/pack-objects.c b/builtin/pack-objects.c
index e7ea206..411aefd 100644
--- a/builtin/pack-objects.c
+++ b/builtin/pack-objects.c
@@ -2786,9 +2786,11 @@
if (use_delta_islands) {
const char *p;
- unsigned depth = 0;
+ unsigned depth;
struct object_entry *ent;
+ /* the empty string is a root tree, which is depth 0 */
+ depth = *name ? 1 : 0;
for (p = strchr(name, '/'); p; p = strchr(p + 1, '/'))
depth++;
diff --git a/builtin/rebase.c b/builtin/rebase.c
index 1a27587..5b3e5ba 100644
--- a/builtin/rebase.c
+++ b/builtin/rebase.c
@@ -582,7 +582,8 @@
}
if (!reset_hard && !fill_tree_descriptor(&desc[nr++], &head_oid)) {
- ret = error(_("failed to find tree of %s"), oid_to_hex(oid));
+ ret = error(_("failed to find tree of %s"),
+ oid_to_hex(&head_oid));
goto leave_reset_head;
}
diff --git a/config.c b/config.c
index 04286f7..ff521eb 100644
--- a/config.c
+++ b/config.c
@@ -2294,22 +2294,25 @@
return 0;
}
-int git_config_get_index_threads(void)
+int git_config_get_index_threads(int *dest)
{
- int is_bool, val = 0;
+ int is_bool, val;
val = git_env_ulong("GIT_TEST_INDEX_THREADS", 0);
- if (val)
- return val;
+ if (val) {
+ *dest = val;
+ return 0;
+ }
if (!git_config_get_bool_or_int("index.threads", &is_bool, &val)) {
if (is_bool)
- return val ? 0 : 1;
+ *dest = val ? 0 : 1;
else
- return val;
+ *dest = val;
+ return 0;
}
- return 0; /* auto */
+ return 1;
}
NORETURN
diff --git a/config.h b/config.h
index a06027e..ee5d3fa 100644
--- a/config.h
+++ b/config.h
@@ -246,11 +246,11 @@
extern int git_config_get_bool_or_int(const char *key, int *is_bool, int *dest);
extern int git_config_get_maybe_bool(const char *key, int *dest);
extern int git_config_get_pathname(const char *key, const char **dest);
+extern int git_config_get_index_threads(int *dest);
extern int git_config_get_untracked_cache(void);
extern int git_config_get_split_index(void);
extern int git_config_get_max_percent_split_change(void);
extern int git_config_get_fsmonitor(void);
-extern int git_config_get_index_threads(void);
/* This dies if the configured or default date is in the future */
extern int git_config_get_expiry(const char *key, const char **output);
diff --git a/git-compat-util.h b/git-compat-util.h
index f160581..09b0102 100644
--- a/git-compat-util.h
+++ b/git-compat-util.h
@@ -861,6 +861,7 @@
#define FREE_AND_NULL(p) do { free(p); (p) = NULL; } while (0)
#define ALLOC_ARRAY(x, alloc) (x) = xmalloc(st_mult(sizeof(*(x)), (alloc)))
+#define CALLOC_ARRAY(x, alloc) (x) = xcalloc((alloc), sizeof(*(x)));
#define REALLOC_ARRAY(x, alloc) (x) = xrealloc((x), st_mult(sizeof(*(x)), (alloc)))
#define COPY_ARRAY(dst, src, n) copy_array((dst), (src), (n), sizeof(*(dst)) + \
diff --git a/git-legacy-rebase.sh b/git-legacy-rebase.sh
index 75a08b2..b97ffdc 100755
--- a/git-legacy-rebase.sh
+++ b/git-legacy-rebase.sh
@@ -337,6 +337,11 @@
fix|strip)
force_rebase=t
;;
+ warn|nowarn|error|error-all)
+ ;; # okay, known whitespace option
+ *)
+ die "fatal: Invalid whitespace option: '${1#*=}'"
+ ;;
esac
;;
--ignore-whitespace)
@@ -352,6 +357,9 @@
git_am_opt="$git_am_opt $1"
force_rebase=t
;;
+ -C*[!0-9]*)
+ die "fatal: switch \`C' expects a numerical value"
+ ;;
-C*)
git_am_opt="$git_am_opt $1"
;;
diff --git a/pack-objects.h b/pack-objects.h
index feb6a6a..dc869f2 100644
--- a/pack-objects.h
+++ b/pack-objects.h
@@ -412,7 +412,7 @@
unsigned int tree_depth)
{
if (!pack->tree_depth)
- ALLOC_ARRAY(pack->tree_depth, pack->nr_objects);
+ CALLOC_ARRAY(pack->tree_depth, pack->nr_alloc);
pack->tree_depth[e - pack->objects] = tree_depth;
}
@@ -429,7 +429,7 @@
unsigned char layer)
{
if (!pack->layer)
- ALLOC_ARRAY(pack->layer, pack->nr_objects);
+ CALLOC_ARRAY(pack->layer, pack->nr_alloc);
pack->layer[e - pack->objects] = layer;
}
diff --git a/read-cache.c b/read-cache.c
index 4ca8128..42de59a 100644
--- a/read-cache.c
+++ b/read-cache.c
@@ -2176,7 +2176,8 @@
src_offset = sizeof(*hdr);
- nr_threads = git_config_get_index_threads();
+ if (git_config_get_index_threads(&nr_threads))
+ nr_threads = 1;
/* TODO: does creating more threads than cores help? */
if (!nr_threads) {
@@ -2689,6 +2690,36 @@
rollback_lock_file(lockfile);
}
+static int record_eoie(void)
+{
+ int val;
+
+ if (!git_config_get_bool("index.recordendofindexentries", &val))
+ return val;
+
+ /*
+ * As a convenience, the end of index entries extension
+ * used for threading is written by default if the user
+ * explicitly requested threaded index reads.
+ */
+ return !git_config_get_index_threads(&val) && val != 1;
+}
+
+static int record_ieot(void)
+{
+ int val;
+
+ if (!git_config_get_bool("index.recordoffsettable", &val))
+ return val;
+
+ /*
+ * As a convenience, the offset table used for threading is
+ * written by default if the user explicitly requested
+ * threaded index reads.
+ */
+ return !git_config_get_index_threads(&val) && val != 1;
+}
+
/*
* On success, `tempfile` is closed. If it is the temporary file
* of a `struct lock_file`, we will therefore effectively perform
@@ -2747,12 +2778,10 @@
if (ce_write(&c, newfd, &hdr, sizeof(hdr)) < 0)
return -1;
- if (HAVE_THREADS)
- nr_threads = git_config_get_index_threads();
- else
+ if (!HAVE_THREADS || git_config_get_index_threads(&nr_threads))
nr_threads = 1;
- if (nr_threads != 1) {
+ if (nr_threads != 1 && record_ieot()) {
int ieot_blocks, cpus;
/*
@@ -2936,7 +2965,7 @@
* read. Write it out regardless of the strip_extensions parameter as we need it
* when loading the shared index.
*/
- if (offset) {
+ if (offset && record_eoie()) {
struct strbuf sb = STRBUF_INIT;
write_eoie_extension(&sb, &eoie_c, offset);
diff --git a/t/t1700-split-index.sh b/t/t1700-split-index.sh
index 2ac47aa..0cbac64 100755
--- a/t/t1700-split-index.sh
+++ b/t/t1700-split-index.sh
@@ -25,14 +25,17 @@
git update-index --split-index &&
test-tool dump-split-index .git/index >actual &&
indexversion=$(test-tool index-version <.git/index) &&
+
+ # NEEDSWORK: Stop hard-coding checksums.
if test "$indexversion" = "4"
then
- own=3527df833c6c100d3d1d921a9a782d62a8be4b58
- base=746f7ab2ed44fb839efdfbffcf399d0b113fb4cb
+ own=432ef4b63f32193984f339431fd50ca796493569
+ base=508851a7f0dfa8691e9f69c7f055865389012491
else
- own=5e9b60117ece18da410ddecc8b8d43766a0e4204
- base=4370042739b31cd17a5c5cd6043a77c9a00df113
+ own=8299b0bcd1ac364e5f1d7768efb62fa2da79a339
+ base=39d890139ee5356c7ef572216cebcd27aa41f9df
fi &&
+
cat >expect <<-EOF &&
own $own
base $base
