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authorNguyễn Thái Ngọc Duy <pclouds@gmail.com>2014-06-13 12:19:44 (GMT)
committerJunio C Hamano <gitster@pobox.com>2014-06-13 18:49:41 (GMT)
commitc18b80a0e86c4529146e3947454159627f1419a7 (patch)
treeaad268bd7feaf75d694b902deb139e3aaf77da2e /builtin/update-index.c
parentb3c96fb158f05152336f167076f5d81d23c3a5e5 (diff)
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update-index: new options to enable/disable split index mode
If you have a large work tree but only make changes in a subset, then $GIT_DIR/index's size should be stable after a while. If you change branches that touch something else, $GIT_DIR/index's size may grow large that it becomes as slow as the unified index. Do --split-index again occasionally to force all changes back to the shared index and keep $GIT_DIR/index small. Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Diffstat (limited to 'builtin/update-index.c')
-rw-r--r--builtin/update-index.c18
1 files changed, 18 insertions, 0 deletions
diff --git a/builtin/update-index.c b/builtin/update-index.c
index f7a19c4..b0503f4 100644
--- a/builtin/update-index.c
+++ b/builtin/update-index.c
@@ -13,6 +13,7 @@
#include "parse-options.h"
#include "pathspec.h"
#include "dir.h"
+#include "split-index.h"
/*
* Default to not allowing changes to the list of files. The
@@ -742,6 +743,7 @@ int cmd_update_index(int argc, const char **argv, const char *prefix)
char set_executable_bit = 0;
struct refresh_params refresh_args = {0, &has_errors};
int lock_error = 0;
+ int split_index = -1;
struct lock_file *lock_file;
struct parse_opt_ctx_t ctx;
int parseopt_state = PARSE_OPT_UNKNOWN;
@@ -824,6 +826,8 @@ int cmd_update_index(int argc, const char **argv, const char *prefix)
resolve_undo_clear_callback},
OPT_INTEGER(0, "index-version", &preferred_index_format,
N_("write index in this format")),
+ OPT_BOOL(0, "split-index", &split_index,
+ N_("enable or disable split index")),
OPT_END()
};
@@ -917,6 +921,20 @@ int cmd_update_index(int argc, const char **argv, const char *prefix)
strbuf_release(&buf);
}
+ if (split_index > 0) {
+ init_split_index(&the_index);
+ the_index.cache_changed |= SPLIT_INDEX_ORDERED;
+ } else if (!split_index && the_index.split_index) {
+ /*
+ * can't discard_split_index(&the_index); because that
+ * will destroy split_index->base->cache[], which may
+ * be shared with the_index.cache[]. So yeah we're
+ * leaking a bit here.
+ */
+ the_index.split_index = NULL;
+ the_index.cache_changed |= SOMETHING_CHANGED;
+ }
+
if (active_cache_changed) {
if (newfd < 0) {
if (refresh_args.flags & REFRESH_QUIET)