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reset: warn when refresh_index() takes more than 2 seconds

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refresh_index() is done after a reset command as an optimization.  Because
it can be an expensive call, warn the user if it takes more than 2 seconds
and tell them how to avoid it using the --quiet command line option or
reset.quiet config setting.

Signed-off-by: Ben Peart <benpeart@microsoft.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Ben Peart 2018-10-23 15:04:23 -04:00 committed by Junio C Hamano
parent 4c3abd0551
commit 649bf3a42f
4 changed files with 20 additions and 1 deletions
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4
Documentation/config.txt
View File

@ -333,6 +333,10 @@ advice.*::
commitBeforeMerge::
Advice shown when linkgit:git-merge[1] refuses to
merge to avoid overwriting local changes.
resetQuiet::
Advice to consider using the `--quiet` option to linkgit:git-reset[1]
when the command takes more than 2 seconds to enumerate unstaged
changes after reset.
resolveConflict::
Advice shown by various commands when conflicts
prevent the operation from being performed.

2
advice.c
View File

@ -12,6 +12,7 @@ int advice_push_needs_force = 1;
int advice_status_hints = 1;
int advice_status_u_option = 1;
int advice_commit_before_merge = 1;
int advice_reset_quiet_warning = 1;
int advice_resolve_conflict = 1;
int advice_implicit_identity = 1;
int advice_detached_head = 1;
@ -65,6 +66,7 @@ static struct {
{ "statusHints", &advice_status_hints },
{ "statusUoption", &advice_status_u_option },
{ "commitBeforeMerge", &advice_commit_before_merge },
{ "resetQuiet", &advice_reset_quiet_warning },
{ "resolveConflict", &advice_resolve_conflict },
{ "implicitIdentity", &advice_implicit_identity },
{ "detachedHead", &advice_detached_head },

1
advice.h
View File

@ -12,6 +12,7 @@ extern int advice_push_needs_force;
extern int advice_status_hints;
extern int advice_status_u_option;
extern int advice_commit_before_merge;
extern int advice_reset_quiet_warning;
extern int advice_resolve_conflict;
extern int advice_implicit_identity;
extern int advice_detached_head;

14
builtin/reset.c
View File

@ -25,6 +25,8 @@
#include "submodule.h"
#include "submodule-config.h"
#define REFRESH_INDEX_DELAY_WARNING_IN_MS (2 * 1000)
static const char * const git_reset_usage[] = {
N_("git reset [--mixed | --soft | --hard | --merge | --keep] [-q] [<commit>]"),
N_("git reset [-q] [<tree-ish>] [--] <paths>..."),
@ -377,9 +379,19 @@ int cmd_reset(int argc, const char **argv, const char *prefix)
int flags = quiet ? REFRESH_QUIET : REFRESH_IN_PORCELAIN;
if (read_from_tree(&pathspec, &oid, intent_to_add))
return 1;
if (!quiet && get_git_work_tree())
if (!quiet && get_git_work_tree()) {
uint64_t t_begin, t_delta_in_ms;
t_begin = getnanotime();
refresh_index(&the_index, flags, NULL, NULL,
_("Unstaged changes after reset:"));
t_delta_in_ms = (getnanotime() - t_begin) / 1000000;
if (advice_reset_quiet_warning && t_delta_in_ms > REFRESH_INDEX_DELAY_WARNING_IN_MS) {
printf(_("\nIt took %.2f seconds to enumerate unstaged changes after reset. You can\n"
"use '--quiet' to avoid this. Set the config setting reset.quiet to true\n"
"to make this the default.\n"), t_delta_in_ms / 1000.0);
}
}
} else {
int err = reset_index(&oid, reset_type, quiet);
if (reset_type == KEEP && !err)