[thirdparty/git.git] / builtin / gc.c

/*
 * git gc builtin command
 *
 * Cleanup unreachable files and optimize the repository.
 *
 * Copyright (c) 2007 James Bowes
 *
 * Based on git-gc.sh, which is
 *
 * Copyright (c) 2006 Shawn O. Pearce
 */

#include "builtin.h"
#include "tempfile.h"
#include "lockfile.h"
#include "parse-options.h"
#include "run-command.h"
#include "sigchain.h"
#include "argv-array.h"
#include "commit.h"

#define FAILED_RUN "failed to run %s"

static const char * const builtin_gc_usage[] = {
	N_("git gc [<options>]"),
	NULL
};

static int pack_refs = 1;
static int prune_reflogs = 1;
static int aggressive_depth = 250;
static int aggressive_window = 250;
static int gc_auto_threshold = 6700;
static int gc_auto_pack_limit = 50;
static int detach_auto = 1;
static const char *prune_expire = "2.weeks.ago";
static const char *prune_worktrees_expire = "3.months.ago";

static struct argv_array pack_refs_cmd = ARGV_ARRAY_INIT;
static struct argv_array reflog = ARGV_ARRAY_INIT;
static struct argv_array repack = ARGV_ARRAY_INIT;
static struct argv_array prune = ARGV_ARRAY_INIT;
static struct argv_array prune_worktrees = ARGV_ARRAY_INIT;
static struct argv_array rerere = ARGV_ARRAY_INIT;

static struct tempfile pidfile;

static void git_config_date_string(const char *key, const char **output)
{
	if (git_config_get_string_const(key, output))
		return;
	if (strcmp(*output, "now")) {
		unsigned long now = approxidate("now");
		if (approxidate(*output) >= now)
			git_die_config(key, _("Invalid %s: '%s'"), key, *output);
	}
}

static void gc_config(void)
{
	const char *value;

	if (!git_config_get_value("gc.packrefs", &value)) {
		if (value && !strcmp(value, "notbare"))
			pack_refs = -1;
		else
			pack_refs = git_config_bool("gc.packrefs", value);
	}

	git_config_get_int("gc.aggressivewindow", &aggressive_window);
	git_config_get_int("gc.aggressivedepth", &aggressive_depth);
	git_config_get_int("gc.auto", &gc_auto_threshold);
	git_config_get_int("gc.autopacklimit", &gc_auto_pack_limit);
	git_config_get_bool("gc.autodetach", &detach_auto);
	git_config_date_string("gc.pruneexpire", &prune_expire);
	git_config_date_string("gc.worktreepruneexpire", &prune_worktrees_expire);
	git_config(git_default_config, NULL);
}

static int too_many_loose_objects(void)
{
	/*
	 * Quickly check if a "gc" is needed, by estimating how
	 * many loose objects there are.  Because SHA-1 is evenly
	 * distributed, we can check only one and get a reasonable
	 * estimate.
	 */
	char path[PATH_MAX];
	const char *objdir = get_object_directory();
	DIR *dir;
	struct dirent *ent;
	int auto_threshold;
	int num_loose = 0;
	int needed = 0;

	if (gc_auto_threshold <= 0)
		return 0;

	if (sizeof(path) <= snprintf(path, sizeof(path), "%s/17", objdir)) {
		warning(_("insanely long object directory %.*s"), 50, objdir);
		return 0;
	}
	dir = opendir(path);
	if (!dir)
		return 0;

	auto_threshold = (gc_auto_threshold + 255) / 256;
	while ((ent = readdir(dir)) != NULL) {
		if (strspn(ent->d_name, "0123456789abcdef") != 38 ||
		    ent->d_name[38] != '\0')
			continue;
		if (++num_loose > auto_threshold) {
			needed = 1;
			break;
		}
	}
	closedir(dir);
	return needed;
}

static int too_many_packs(void)
{
	struct packed_git *p;
	int cnt;

	if (gc_auto_pack_limit <= 0)
		return 0;

	prepare_packed_git();
	for (cnt = 0, p = packed_git; p; p = p->next) {
		if (!p->pack_local)
			continue;
		if (p->pack_keep)
			continue;
		/*
		 * Perhaps check the size of the pack and count only
		 * very small ones here?
		 */
		cnt++;
	}
	return gc_auto_pack_limit <= cnt;
}

static void add_repack_all_option(void)
{
	if (prune_expire && !strcmp(prune_expire, "now"))
		argv_array_push(&repack, "-a");
	else {
		argv_array_push(&repack, "-A");
		if (prune_expire)
			argv_array_pushf(&repack, "--unpack-unreachable=%s", prune_expire);
	}
}

static int need_to_gc(void)
{
	/*
	 * Setting gc.auto to 0 or negative can disable the
	 * automatic gc.
	 */
	if (gc_auto_threshold <= 0)
		return 0;

	/*
	 * If there are too many loose objects, but not too many
	 * packs, we run "repack -d -l".  If there are too many packs,
	 * we run "repack -A -d -l".  Otherwise we tell the caller
	 * there is no need.
	 */
	if (too_many_packs())
		add_repack_all_option();
	else if (!too_many_loose_objects())
		return 0;

	if (run_hook_le(NULL, "pre-auto-gc", NULL))
		return 0;
	return 1;
}

/* return NULL on success, else hostname running the gc */
static const char *lock_repo_for_gc(int force, pid_t* ret_pid)
{
	static struct lock_file lock;
	char my_host[128];
	struct strbuf sb = STRBUF_INIT;
	struct stat st;
	uintmax_t pid;
	FILE *fp;
	int fd;
	char *pidfile_path;

	if (is_tempfile_active(&pidfile))
		/* already locked */
		return NULL;

	if (gethostname(my_host, sizeof(my_host)))
		strcpy(my_host, "unknown");

	pidfile_path = git_pathdup("gc.pid");
	fd = hold_lock_file_for_update(&lock, pidfile_path,
				       LOCK_DIE_ON_ERROR);
	if (!force) {
		static char locking_host[128];
		int should_exit;
		fp = fopen(pidfile_path, "r");
		memset(locking_host, 0, sizeof(locking_host));
		should_exit =
			fp != NULL &&
			!fstat(fileno(fp), &st) &&
			/*
			 * 12 hour limit is very generous as gc should
			 * never take that long. On the other hand we
			 * don't really need a strict limit here,
			 * running gc --auto one day late is not a big
			 * problem. --force can be used in manual gc
			 * after the user verifies that no gc is
			 * running.
			 */
			time(NULL) - st.st_mtime <= 12 * 3600 &&
			fscanf(fp, "%"PRIuMAX" %127c", &pid, locking_host) == 2 &&
			/* be gentle to concurrent "gc" on remote hosts */
			(strcmp(locking_host, my_host) || !kill(pid, 0) || errno == EPERM);
		if (fp != NULL)
			fclose(fp);
		if (should_exit) {
			if (fd >= 0)
				rollback_lock_file(&lock);
			*ret_pid = pid;
			free(pidfile_path);
			return locking_host;
		}
	}

	strbuf_addf(&sb, "%"PRIuMAX" %s",
		    (uintmax_t) getpid(), my_host);
	write_in_full(fd, sb.buf, sb.len);
	strbuf_release(&sb);
	commit_lock_file(&lock);
	register_tempfile(&pidfile, pidfile_path);
	free(pidfile_path);
	return NULL;
}

static int gc_before_repack(void)
{
	if (pack_refs && run_command_v_opt(pack_refs_cmd.argv, RUN_GIT_CMD))
		return error(FAILED_RUN, pack_refs_cmd.argv[0]);

	if (prune_reflogs && run_command_v_opt(reflog.argv, RUN_GIT_CMD))
		return error(FAILED_RUN, reflog.argv[0]);

	pack_refs = 0;
	prune_reflogs = 0;
	return 0;
}

int cmd_gc(int argc, const char **argv, const char *prefix)
{
	int aggressive = 0;
	int auto_gc = 0;
	int quiet = 0;
	int force = 0;
	const char *name;
	pid_t pid;

	struct option builtin_gc_options[] = {
		OPT__QUIET(&quiet, N_("suppress progress reporting")),
		{ OPTION_STRING, 0, "prune", &prune_expire, N_("date"),
			N_("prune unreferenced objects"),
			PARSE_OPT_OPTARG, NULL, (intptr_t)prune_expire },
		OPT_BOOL(0, "aggressive", &aggressive, N_("be more thorough (increased runtime)")),
		OPT_BOOL(0, "auto", &auto_gc, N_("enable auto-gc mode")),
		OPT_BOOL(0, "force", &force, N_("force running gc even if there may be another gc running")),
		OPT_END()
	};

	if (argc == 2 && !strcmp(argv[1], "-h"))
		usage_with_options(builtin_gc_usage, builtin_gc_options);

	argv_array_pushl(&pack_refs_cmd, "pack-refs", "--all", "--prune", NULL);
	argv_array_pushl(&reflog, "reflog", "expire", "--all", NULL);
	argv_array_pushl(&repack, "repack", "-d", "-l", NULL);
	argv_array_pushl(&prune, "prune", "--expire", NULL);
	argv_array_pushl(&prune_worktrees, "worktree", "prune", "--expire", NULL);
	argv_array_pushl(&rerere, "rerere", "gc", NULL);

	gc_config();

	if (pack_refs < 0)
		pack_refs = !is_bare_repository();

	argc = parse_options(argc, argv, prefix, builtin_gc_options,
			     builtin_gc_usage, 0);
	if (argc > 0)
		usage_with_options(builtin_gc_usage, builtin_gc_options);

	if (aggressive) {
		argv_array_push(&repack, "-f");
		if (aggressive_depth > 0)
			argv_array_pushf(&repack, "--depth=%d", aggressive_depth);
		if (aggressive_window > 0)
			argv_array_pushf(&repack, "--window=%d", aggressive_window);
	}
	if (quiet)
		argv_array_push(&repack, "-q");

	if (auto_gc) {
		/*
		 * Auto-gc should be least intrusive as possible.
		 */
		if (!need_to_gc())
			return 0;
		if (!quiet) {
			if (detach_auto)
				fprintf(stderr, _("Auto packing the repository in background for optimum performance.\n"));
			else
				fprintf(stderr, _("Auto packing the repository for optimum performance.\n"));
			fprintf(stderr, _("See \"git help gc\" for manual housekeeping.\n"));
		}
		if (detach_auto) {
			if (gc_before_repack())
				return -1;
			/*
			 * failure to daemonize is ok, we'll continue
			 * in foreground
			 */
			daemonize();
		}
	} else
		add_repack_all_option();

	name = lock_repo_for_gc(force, &pid);
	if (name) {
		if (auto_gc)
			return 0; /* be quiet on --auto */
		die(_("gc is already running on machine '%s' pid %"PRIuMAX" (use --force if not)"),
		    name, (uintmax_t)pid);
	}

	if (gc_before_repack())
		return -1;

	if (run_command_v_opt(repack.argv, RUN_GIT_CMD))
		return error(FAILED_RUN, repack.argv[0]);

	if (prune_expire) {
		argv_array_push(&prune, prune_expire);
		if (quiet)
			argv_array_push(&prune, "--no-progress");
		if (run_command_v_opt(prune.argv, RUN_GIT_CMD))
			return error(FAILED_RUN, prune.argv[0]);
	}

	if (prune_worktrees_expire) {
		argv_array_push(&prune_worktrees, prune_worktrees_expire);
		if (run_command_v_opt(prune_worktrees.argv, RUN_GIT_CMD))
			return error(FAILED_RUN, prune_worktrees.argv[0]);
	}

	if (run_command_v_opt(rerere.argv, RUN_GIT_CMD))
		return error(FAILED_RUN, rerere.argv[0]);

	if (auto_gc && too_many_loose_objects())
		warning(_("There are too many unreachable loose objects; "
			"run 'git prune' to remove them."));

	return 0;
}
Commit	Line	Data
6757ada4 JB	1	/*
	2	* git gc builtin command
	3	*
	4	* Cleanup unreachable files and optimize the repository.
	5	*
	6	* Copyright (c) 2007 James Bowes
	7	*
	8	* Based on git-gc.sh, which is
	9	*
	10	* Copyright (c) 2006 Shawn O. Pearce
	11	*/
	12
baffc0e7	13	#include "builtin.h"
ebebeaea	14	#include "tempfile.h"
697cc8ef	15	#include "lockfile.h"
44c637c8	16	#include "parse-options.h"
6757ada4	17	#include "run-command.h"
4c5baf02	18	#include "sigchain.h"
234587fc	19	#include "argv-array.h"
eab3296c	20	#include "commit.h"
6757ada4 JB	21
	22	#define FAILED_RUN "failed to run %s"
	23
44c637c8	24	static const char * const builtin_gc_usage[] = {
9c9b4f2f	25	N_("git gc [<options>]"),
44c637c8 JB	26	NULL
44c637c8 JB	27	};
6757ada4	28
56752391	29	static int pack_refs = 1;
62aad184	30	static int prune_reflogs = 1;
125f8146	31	static int aggressive_depth = 250;
1c192f34	32	static int aggressive_window = 250;
2c3c4399	33	static int gc_auto_threshold = 6700;
97063974	34	static int gc_auto_pack_limit = 50;
9f673f94	35	static int detach_auto = 1;
d3154b44	36	static const char *prune_expire = "2.weeks.ago";
e3df33bb	37	static const char *prune_worktrees_expire = "3.months.ago";
6757ada4	38
234587fc JK	39	static struct argv_array pack_refs_cmd = ARGV_ARRAY_INIT;
	40	static struct argv_array reflog = ARGV_ARRAY_INIT;
	41	static struct argv_array repack = ARGV_ARRAY_INIT;
	42	static struct argv_array prune = ARGV_ARRAY_INIT;
e3df33bb	43	static struct argv_array prune_worktrees = ARGV_ARRAY_INIT;
234587fc	44	static struct argv_array rerere = ARGV_ARRAY_INIT;
6757ada4	45
ebebeaea	46	static struct tempfile pidfile;
4c5baf02	47
09dbb90b NTND	48	static void git_config_date_string(const char key, const char *output)
	49	{
	50	if (git_config_get_string_const(key, output))
	51	return;
	52	if (strcmp(*output, "now")) {
	53	unsigned long now = approxidate("now");
	54	if (approxidate(*output) >= now)
	55	git_die_config(key, _("Invalid %s: '%s'"), key, *output);
	56	}
	57	}
	58
5801d3b4	59	static void gc_config(void)
6757ada4	60	{
5801d3b4 TA	61	const char *value;
	62
	63	if (!git_config_get_value("gc.packrefs", &value)) {
c5e5a2c0	64	if (value && !strcmp(value, "notbare"))
6757ada4 JB	65	pack_refs = -1;
6757ada4 JB	66	else
5801d3b4	67	pack_refs = git_config_bool("gc.packrefs", value);
17815501	68	}
5801d3b4 TA	69
	70	git_config_get_int("gc.aggressivewindow", &aggressive_window);
	71	git_config_get_int("gc.aggressivedepth", &aggressive_depth);
	72	git_config_get_int("gc.auto", &gc_auto_threshold);
	73	git_config_get_int("gc.autopacklimit", &gc_auto_pack_limit);
	74	git_config_get_bool("gc.autodetach", &detach_auto);
09dbb90b	75	git_config_date_string("gc.pruneexpire", &prune_expire);
114ff888	76	git_config_date_string("gc.worktreepruneexpire", &prune_worktrees_expire);
5801d3b4	77	git_config(git_default_config, NULL);
6757ada4 JB	78	}
6757ada4 JB	79
a087cc98	80	static int too_many_loose_objects(void)
2c3c4399 JH	81	{
	82	/*
	83	* Quickly check if a "gc" is needed, by estimating how
	84	* many loose objects there are. Because SHA-1 is evenly
	85	* distributed, we can check only one and get a reasonable
	86	* estimate.
	87	*/
	88	char path[PATH_MAX];
	89	const char *objdir = get_object_directory();
	90	DIR *dir;
	91	struct dirent *ent;
	92	int auto_threshold;
	93	int num_loose = 0;
	94	int needed = 0;
	95
17815501 JH	96	if (gc_auto_threshold <= 0)
	97	return 0;
	98
2c3c4399	99	if (sizeof(path) <= snprintf(path, sizeof(path), "%s/17", objdir)) {
fea6128b	100	warning(_("insanely long object directory %.*s"), 50, objdir);
2c3c4399 JH	101	return 0;
	102	}
	103	dir = opendir(path);
	104	if (!dir)
	105	return 0;
	106
	107	auto_threshold = (gc_auto_threshold + 255) / 256;
	108	while ((ent = readdir(dir)) != NULL) {
	109	if (strspn(ent->d_name, "0123456789abcdef") != 38 \|\|
	110	ent->d_name[38] != '\0')
	111	continue;
	112	if (++num_loose > auto_threshold) {
	113	needed = 1;
	114	break;
	115	}
	116	}
	117	closedir(dir);
	118	return needed;
	119	}
	120
17815501 JH	121	static int too_many_packs(void)
	122	{
	123	struct packed_git *p;
	124	int cnt;
	125
	126	if (gc_auto_pack_limit <= 0)
	127	return 0;
	128
	129	prepare_packed_git();
	130	for (cnt = 0, p = packed_git; p; p = p->next) {
17815501 JH	131	if (!p->pack_local)
17815501 JH	132	continue;
01af249f	133	if (p->pack_keep)
17815501 JH	134	continue;
	135	/*
	136	* Perhaps check the size of the pack and count only
	137	* very small ones here?
	138	*/
	139	cnt++;
	140	}
	141	return gc_auto_pack_limit <= cnt;
	142	}
	143
7e52f566 JK	144	static void add_repack_all_option(void)
	145	{
	146	if (prune_expire && !strcmp(prune_expire, "now"))
234587fc	147	argv_array_push(&repack, "-a");
7e52f566	148	else {
234587fc JK	149	argv_array_push(&repack, "-A");
	150	if (prune_expire)
	151	argv_array_pushf(&repack, "--unpack-unreachable=%s", prune_expire);
7e52f566 JK	152	}
	153	}
	154
a087cc98 JH	155	static int need_to_gc(void)
	156	{
	157	/*
b14d255b BC	158	* Setting gc.auto to 0 or negative can disable the
b14d255b BC	159	* automatic gc.
a087cc98	160	*/
b14d255b	161	if (gc_auto_threshold <= 0)
95143f9e JH	162	return 0;
95143f9e JH	163
17815501 JH	164	/*
	165	* If there are too many loose objects, but not too many
	166	* packs, we run "repack -d -l". If there are too many packs,
	167	* we run "repack -A -d -l". Otherwise we tell the caller
	168	* there is no need.
	169	*/
17815501	170	if (too_many_packs())
7e52f566	171	add_repack_all_option();
17815501 JH	172	else if (!too_many_loose_objects())
17815501 JH	173	return 0;
bde30540	174
15048f8a	175	if (run_hook_le(NULL, "pre-auto-gc", NULL))
bde30540	176	return 0;
95143f9e	177	return 1;
a087cc98 JH	178	}
a087cc98 JH	179
64a99eb4 NTND	180	/* return NULL on success, else hostname running the gc */
	181	static const char lock_repo_for_gc(int force, pid_t ret_pid)
	182	{
	183	static struct lock_file lock;
64a99eb4 NTND	184	char my_host[128];
	185	struct strbuf sb = STRBUF_INIT;
	186	struct stat st;
	187	uintmax_t pid;
	188	FILE *fp;
4f1c0b21	189	int fd;
00539cef	190	char *pidfile_path;
64a99eb4	191
ebebeaea	192	if (is_tempfile_active(&pidfile))
4c5baf02 JN	193	/* already locked */
	194	return NULL;
	195
64a99eb4 NTND	196	if (gethostname(my_host, sizeof(my_host)))
	197	strcpy(my_host, "unknown");
	198
00539cef MH	199	pidfile_path = git_pathdup("gc.pid");
00539cef MH	200	fd = hold_lock_file_for_update(&lock, pidfile_path,
64a99eb4 NTND	201	LOCK_DIE_ON_ERROR);
64a99eb4 NTND	202	if (!force) {
4f1c0b21 EP	203	static char locking_host[128];
4f1c0b21 EP	204	int should_exit;
00539cef	205	fp = fopen(pidfile_path, "r");
64a99eb4 NTND	206	memset(locking_host, 0, sizeof(locking_host));
	207	should_exit =
	208	fp != NULL &&
	209	!fstat(fileno(fp), &st) &&
	210	/*
	211	* 12 hour limit is very generous as gc should
	212	* never take that long. On the other hand we
	213	* don't really need a strict limit here,
	214	* running gc --auto one day late is not a big
	215	* problem. --force can be used in manual gc
	216	* after the user verifies that no gc is
	217	* running.
	218	*/
	219	time(NULL) - st.st_mtime <= 12 * 3600 &&
	220	fscanf(fp, "%"PRIuMAX" %127c", &pid, locking_host) == 2 &&
	221	/* be gentle to concurrent "gc" on remote hosts */
ed7eda8b	222	(strcmp(locking_host, my_host) \|\| !kill(pid, 0) \|\| errno == EPERM);
64a99eb4 NTND	223	if (fp != NULL)
	224	fclose(fp);
	225	if (should_exit) {
	226	if (fd >= 0)
	227	rollback_lock_file(&lock);
	228	*ret_pid = pid;
00539cef	229	free(pidfile_path);
64a99eb4 NTND	230	return locking_host;
	231	}
	232	}
	233
	234	strbuf_addf(&sb, "%"PRIuMAX" %s",
	235	(uintmax_t) getpid(), my_host);
	236	write_in_full(fd, sb.buf, sb.len);
	237	strbuf_release(&sb);
	238	commit_lock_file(&lock);
ebebeaea MH	239	register_tempfile(&pidfile, pidfile_path);
ebebeaea MH	240	free(pidfile_path);
64a99eb4 NTND	241	return NULL;
	242	}
	243
62aad184 NTND	244	static int gc_before_repack(void)
	245	{
	246	if (pack_refs && run_command_v_opt(pack_refs_cmd.argv, RUN_GIT_CMD))
	247	return error(FAILED_RUN, pack_refs_cmd.argv[0]);
	248
	249	if (prune_reflogs && run_command_v_opt(reflog.argv, RUN_GIT_CMD))
	250	return error(FAILED_RUN, reflog.argv[0]);
	251
	252	pack_refs = 0;
	253	prune_reflogs = 0;
	254	return 0;
	255	}
	256
6757ada4 JB	257	int cmd_gc(int argc, const char *argv, const char prefix)
6757ada4 JB	258	{
44c637c8	259	int aggressive = 0;
2c3c4399	260	int auto_gc = 0;
a0c14cbb	261	int quiet = 0;
64a99eb4 NTND	262	int force = 0;
	263	const char *name;
	264	pid_t pid;
6757ada4	265
44c637c8	266	struct option builtin_gc_options[] = {
6705c162 NTND	267	OPT__QUIET(&quiet, N_("suppress progress reporting")),
	268	{ OPTION_STRING, 0, "prune", &prune_expire, N_("date"),
	269	N_("prune unreferenced objects"),
58e9d9d4	270	PARSE_OPT_OPTARG, NULL, (intptr_t)prune_expire },
d5d09d47 SB	271	OPT_BOOL(0, "aggressive", &aggressive, N_("be more thorough (increased runtime)")),
d5d09d47 SB	272	OPT_BOOL(0, "auto", &auto_gc, N_("enable auto-gc mode")),
64a99eb4	273	OPT_BOOL(0, "force", &force, N_("force running gc even if there may be another gc running")),
44c637c8 JB	274	OPT_END()
	275	};
	276
0c8151b6 NTND	277	if (argc == 2 && !strcmp(argv[1], "-h"))
	278	usage_with_options(builtin_gc_usage, builtin_gc_options);
	279
234587fc JK	280	argv_array_pushl(&pack_refs_cmd, "pack-refs", "--all", "--prune", NULL);
	281	argv_array_pushl(&reflog, "reflog", "expire", "--all", NULL);
	282	argv_array_pushl(&repack, "repack", "-d", "-l", NULL);
2cfe2a78	283	argv_array_pushl(&prune, "prune", "--expire", NULL);
df0b6cfb	284	argv_array_pushl(&prune_worktrees, "worktree", "prune", "--expire", NULL);
234587fc JK	285	argv_array_pushl(&rerere, "rerere", "gc", NULL);
234587fc JK	286
5801d3b4	287	gc_config();
6757ada4 JB	288
	289	if (pack_refs < 0)
	290	pack_refs = !is_bare_repository();
	291
37782920 SB	292	argc = parse_options(argc, argv, prefix, builtin_gc_options,
37782920 SB	293	builtin_gc_usage, 0);
44c637c8 JB	294	if (argc > 0)
	295	usage_with_options(builtin_gc_usage, builtin_gc_options);
	296
	297	if (aggressive) {
234587fc	298	argv_array_push(&repack, "-f");
125f8146 NTND	299	if (aggressive_depth > 0)
125f8146 NTND	300	argv_array_pushf(&repack, "--depth=%d", aggressive_depth);
234587fc JK	301	if (aggressive_window > 0)
234587fc JK	302	argv_array_pushf(&repack, "--window=%d", aggressive_window);
6757ada4	303	}
a0c14cbb	304	if (quiet)
234587fc	305	argv_array_push(&repack, "-q");
6757ada4	306
2c3c4399 JH	307	if (auto_gc) {
	308	/*
	309	* Auto-gc should be least intrusive as possible.
	310	*/
2c3c4399 JH	311	if (!need_to_gc())
2c3c4399 JH	312	return 0;
9f673f94 NTND	313	if (!quiet) {
	314	if (detach_auto)
	315	fprintf(stderr, _("Auto packing the repository in background for optimum performance.\n"));
	316	else
	317	fprintf(stderr, _("Auto packing the repository for optimum performance.\n"));
	318	fprintf(stderr, _("See \"git help gc\" for manual housekeeping.\n"));
	319	}
62aad184 NTND	320	if (detach_auto) {
	321	if (gc_before_repack())
	322	return -1;
9f673f94 NTND	323	/*
	324	* failure to daemonize is ok, we'll continue
	325	* in foreground
	326	*/
	327	daemonize();
62aad184	328	}
a37cce3b	329	} else
7e52f566	330	add_repack_all_option();
2c3c4399	331
64a99eb4 NTND	332	name = lock_repo_for_gc(force, &pid);
	333	if (name) {
	334	if (auto_gc)
	335	return 0; /* be quiet on --auto */
	336	die(_("gc is already running on machine '%s' pid %"PRIuMAX" (use --force if not)"),
	337	name, (uintmax_t)pid);
	338	}
	339
62aad184 NTND	340	if (gc_before_repack())
62aad184 NTND	341	return -1;
6757ada4	342
234587fc JK	343	if (run_command_v_opt(repack.argv, RUN_GIT_CMD))
234587fc JK	344	return error(FAILED_RUN, repack.argv[0]);
6757ada4	345
58e9d9d4	346	if (prune_expire) {
234587fc	347	argv_array_push(&prune, prune_expire);
bf0a59b3	348	if (quiet)
234587fc JK	349	argv_array_push(&prune, "--no-progress");
	350	if (run_command_v_opt(prune.argv, RUN_GIT_CMD))
	351	return error(FAILED_RUN, prune.argv[0]);
58e9d9d4	352	}
6757ada4	353
e3df33bb NTND	354	if (prune_worktrees_expire) {
	355	argv_array_push(&prune_worktrees, prune_worktrees_expire);
	356	if (run_command_v_opt(prune_worktrees.argv, RUN_GIT_CMD))
	357	return error(FAILED_RUN, prune_worktrees.argv[0]);
	358	}
	359
234587fc JK	360	if (run_command_v_opt(rerere.argv, RUN_GIT_CMD))
234587fc JK	361	return error(FAILED_RUN, rerere.argv[0]);
6757ada4	362
a087cc98	363	if (auto_gc && too_many_loose_objects())
fea6128b ÆAB	364	warning(_("There are too many unreachable loose objects; "
fea6128b ÆAB	365	"run 'git prune' to remove them."));
a087cc98	366
6757ada4 JB	367	return 0;
6757ada4 JB	368	}