summaryrefslogtreecommitdiff
path: root/builtin/gc.c
blob: 3984addf73c48a53afb3f8546836733acb77f53e (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
/*
 * 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 "repository.h"
#include "config.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"
#include "commit-graph.h"
#include "packfile.h"
#include "object-store.h"
#include "pack.h"
#include "pack-objects.h"
#include "blob.h"
#include "tree.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 = 50;
static int aggressive_window = 250;
static int gc_auto_threshold = 6700;
static int gc_auto_pack_limit = 50;
static int gc_write_commit_graph;
static int detach_auto = 1;
static timestamp_t gc_log_expire_time;
static const char *gc_log_expire = "1.day.ago";
static const char *prune_expire = "2.weeks.ago";
static const char *prune_worktrees_expire = "3.months.ago";
static unsigned long big_pack_threshold;
static unsigned long max_delta_cache_size = DEFAULT_DELTA_CACHE_SIZE;
 
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 struct lock_file log_lock;
 
static struct string_list pack_garbage = STRING_LIST_INIT_DUP;
 
static void clean_pack_garbage(void)
{
	int i;
	for (i = 0; i < pack_garbage.nr; i++)
		unlink_or_warn(pack_garbage.items[i].string);
	string_list_clear(&pack_garbage, 0);
}
 
static void report_pack_garbage(unsigned seen_bits, const char *path)
{
	if (seen_bits == PACKDIR_FILE_IDX)
		string_list_append(&pack_garbage, path);
}
 
static void process_log_file(void)
{
	struct stat st;
	if (fstat(get_lock_file_fd(&log_lock), &st)) {
		/*
		 * Perhaps there was an i/o error or another
		 * unlikely situation.  Try to make a note of
		 * this in gc.log along with any existing
		 * messages.
		 */
		int saved_errno = errno;
		fprintf(stderr, _("Failed to fstat %s: %s"),
			get_tempfile_path(log_lock.tempfile),
			strerror(saved_errno));
		fflush(stderr);
		commit_lock_file(&log_lock);
		errno = saved_errno;
	} else if (st.st_size) {
		/* There was some error recorded in the lock file */
		commit_lock_file(&log_lock);
	} else {
		/* No error, clean up any old gc.log */
		unlink(git_path("gc.log"));
		rollback_lock_file(&log_lock);
	}
}
 
static void process_log_file_at_exit(void)
{
	fflush(stderr);
	process_log_file();
}
 
static void process_log_file_on_signal(int signo)
{
	process_log_file();
	sigchain_pop(signo);
	raise(signo);
}
 
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.writecommitgraph", &gc_write_commit_graph);
	git_config_get_bool("gc.autodetach", &detach_auto);
	git_config_get_expiry("gc.pruneexpire", &prune_expire);
	git_config_get_expiry("gc.worktreepruneexpire", &prune_worktrees_expire);
	git_config_get_expiry("gc.logexpiry", &gc_log_expire);
 
	git_config_get_ulong("gc.bigpackthreshold", &big_pack_threshold);
	git_config_get_ulong("pack.deltacachesize", &max_delta_cache_size);
 
	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.
	 */
	DIR *dir;
	struct dirent *ent;
	int auto_threshold;
	int num_loose = 0;
	int needed = 0;
 
	if (gc_auto_threshold <= 0)
		return 0;
 
	dir = opendir(git_path("objects/17"));
	if (!dir)
		return 0;
 
	auto_threshold = DIV_ROUND_UP(gc_auto_threshold, 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 struct packed_git *find_base_packs(struct string_list *packs,
					  unsigned long limit)
{
	struct packed_git *p, *base = NULL;
 
	for (p = get_all_packs(the_repository); p; p = p->next) {
		if (!p->pack_local)
			continue;
		if (limit) {
			if (p->pack_size >= limit)
				string_list_append(packs, p->pack_name);
		} else if (!base || base->pack_size < p->pack_size) {
			base = p;
		}
	}
 
	if (base)
		string_list_append(packs, base->pack_name);
 
	return base;
}
 
static int too_many_packs(void)
{
	struct packed_git *p;
	int cnt;
 
	if (gc_auto_pack_limit <= 0)
		return 0;
 
	for (cnt = 0, p = get_all_packs(the_repository); 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 uint64_t total_ram(void)
{
#if defined(HAVE_SYSINFO)
	struct sysinfo si;
 
	if (!sysinfo(&si))
		return si.totalram;
#elif defined(HAVE_BSD_SYSCTL) && (defined(HW_MEMSIZE) || defined(HW_PHYSMEM))
	int64_t physical_memory;
	int mib[2];
	size_t length;
 
	mib[0] = CTL_HW;
# if defined(HW_MEMSIZE)
	mib[1] = HW_MEMSIZE;
# else
	mib[1] = HW_PHYSMEM;
# endif
	length = sizeof(int64_t);
	if (!sysctl(mib, 2, &physical_memory, &length, NULL, 0))
		return physical_memory;
#elif defined(GIT_WINDOWS_NATIVE)
	MEMORYSTATUSEX memInfo;
 
	memInfo.dwLength = sizeof(MEMORYSTATUSEX);
	if (GlobalMemoryStatusEx(&memInfo))
		return memInfo.ullTotalPhys;
#endif
	return 0;
}
 
static uint64_t estimate_repack_memory(struct packed_git *pack)
{
	unsigned long nr_objects = approximate_object_count();
	size_t os_cache, heap;
 
	if (!pack || !nr_objects)
		return 0;
 
	/*
	 * First we have to scan through at least one pack.
	 * Assume enough room in OS file cache to keep the entire pack
	 * or we may accidentally evict data of other processes from
	 * the cache.
	 */
	os_cache = pack->pack_size + pack->index_size;
	/* then pack-objects needs lots more for book keeping */
	heap = sizeof(struct object_entry) * nr_objects;
	/*
	 * internal rev-list --all --objects takes up some memory too,
	 * let's say half of it is for blobs
	 */
	heap += sizeof(struct blob) * nr_objects / 2;
	/*
	 * and the other half is for trees (commits and tags are
	 * usually insignificant)
	 */
	heap += sizeof(struct tree) * nr_objects / 2;
	/* and then obj_hash[], underestimated in fact */
	heap += sizeof(struct object *) * nr_objects;
	/* revindex is used also */
	heap += sizeof(struct revindex_entry) * nr_objects;
	/*
	 * read_sha1_file() (either at delta calculation phase, or
	 * writing phase) also fills up the delta base cache
	 */
	heap += delta_base_cache_limit;
	/* and of course pack-objects has its own delta cache */
	heap += max_delta_cache_size;
 
	return os_cache + heap;
}
 
static int keep_one_pack(struct string_list_item *item, void *data)
{
	argv_array_pushf(&repack, "--keep-pack=%s", basename(item->string));
	return 0;
}
 
static void add_repack_all_option(struct string_list *keep_pack)
{
	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);
	}
 
	if (keep_pack)
		for_each_string_list(keep_pack, keep_one_pack, NULL);
}
 
static void add_repack_incremental_option(void)
{
	argv_array_push(&repack, "--no-write-bitmap-index");
}
 
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()) {
		struct string_list keep_pack = STRING_LIST_INIT_NODUP;
 
		if (big_pack_threshold) {
			find_base_packs(&keep_pack, big_pack_threshold);
			if (keep_pack.nr >= gc_auto_pack_limit) {
				big_pack_threshold = 0;
				string_list_clear(&keep_pack, 0);
				find_base_packs(&keep_pack, 0);
			}
		} else {
			struct packed_git *p = find_base_packs(&keep_pack, 0);
			uint64_t mem_have, mem_want;
 
			mem_have = total_ram();
			mem_want = estimate_repack_memory(p);
 
			/*
			 * Only allow 1/2 of memory for pack-objects, leave
			 * the rest for the OS and other processes in the
			 * system.
			 */
			if (!mem_have || mem_want < mem_have / 2)
				string_list_clear(&keep_pack, 0);
		}
 
		add_repack_all_option(&keep_pack);
		string_list_clear(&keep_pack, 0);
	} else if (too_many_loose_objects())
		add_repack_incremental_option();
	else
		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)
{
	struct lock_file lock = LOCK_INIT;
	char my_host[HOST_NAME_MAX + 1];
	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 (xgethostname(my_host, sizeof(my_host)))
		xsnprintf(my_host, sizeof(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[HOST_NAME_MAX + 1];
		static char *scan_fmt;
		int should_exit;
 
		if (!scan_fmt)
			scan_fmt = xstrfmt("%s %%%ds", "%"SCNuMAX, HOST_NAME_MAX);
		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, scan_fmt, &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);
	pidfile = register_tempfile(pidfile_path);
	free(pidfile_path);
	return NULL;
}
 
/*
 * Returns 0 if there was no previous error and gc can proceed, 1 if
 * gc should not proceed due to an error in the last run. Prints a
 * message and returns -1 if an error occured while reading gc.log
 */
static int report_last_gc_error(void)
{
	struct strbuf sb = STRBUF_INIT;
	int ret = 0;
	ssize_t len;
	struct stat st;
	char *gc_log_path = git_pathdup("gc.log");
 
	if (stat(gc_log_path, &st)) {
		if (errno == ENOENT)
			goto done;
 
		ret = error_errno(_("cannot stat '%s'"), gc_log_path);
		goto done;
	}
 
	if (st.st_mtime < gc_log_expire_time)
		goto done;
 
	len = strbuf_read_file(&sb, gc_log_path, 0);
	if (len < 0)
		ret = error_errno(_("cannot read '%s'"), gc_log_path);
	else if (len > 0) {
		/*
		 * A previous gc failed.  Report the error, and don't
		 * bother with an automatic gc run since it is likely
		 * to fail in the same way.
		 */
		warning(_("The last gc run reported the following. "
			       "Please correct the root cause\n"
			       "and remove %s.\n"
			       "Automatic cleanup will not be performed "
			       "until the file is removed.\n\n"
			       "%s"),
			    gc_log_path, sb.buf);
		ret = 1;
	}
	strbuf_release(&sb);
done:
	free(gc_log_path);
	return ret;
}
 
static void gc_before_repack(void)
{
	if (pack_refs && run_command_v_opt(pack_refs_cmd.argv, RUN_GIT_CMD))
		die(FAILED_RUN, pack_refs_cmd.argv[0]);
 
	if (prune_reflogs && run_command_v_opt(reflog.argv, RUN_GIT_CMD))
		die(FAILED_RUN, reflog.argv[0]);
 
	pack_refs = 0;
	prune_reflogs = 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;
	int daemonized = 0;
	int keep_base_pack = -1;
	timestamp_t dummy;
 
	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_F(0, "auto", &auto_gc, N_("enable auto-gc mode"),
			   PARSE_OPT_NOCOMPLETE),
		OPT_BOOL_F(0, "force", &force,
			   N_("force running gc even if there may be another gc running"),
			   PARSE_OPT_NOCOMPLETE),
		OPT_BOOL(0, "keep-largest-pack", &keep_base_pack,
			 N_("repack all other packs except the largest pack")),
		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);
 
	/* default expiry time, overwritten in gc_config */
	gc_config();
	if (parse_expiry_date(gc_log_expire, &gc_log_expire_time))
		die(_("failed to parse gc.logexpiry value %s"), gc_log_expire);
 
	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 (prune_expire && parse_expiry_date(prune_expire, &dummy))
		die(_("failed to parse prune expiry value %s"), prune_expire);
 
	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) {
			int ret = report_last_gc_error();
			if (ret < 0)
				/* an I/O error occured, already reported */
				exit(128);
			if (ret == 1)
				/* Last gc --auto failed. Skip this one. */
				return 0;
 
			if (lock_repo_for_gc(force, &pid))
				return 0;
			gc_before_repack(); /* dies on failure */
			delete_tempfile(&pidfile);
 
			/*
			 * failure to daemonize is ok, we'll continue
			 * in foreground
			 */
			daemonized = !daemonize();
		}
	} else {
		struct string_list keep_pack = STRING_LIST_INIT_NODUP;
 
		if (keep_base_pack != -1) {
			if (keep_base_pack)
				find_base_packs(&keep_pack, 0);
		} else if (big_pack_threshold) {
			find_base_packs(&keep_pack, big_pack_threshold);
		}
 
		add_repack_all_option(&keep_pack);
		string_list_clear(&keep_pack, 0);
	}
 
	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 (daemonized) {
		hold_lock_file_for_update(&log_lock,
					  git_path("gc.log"),
					  LOCK_DIE_ON_ERROR);
		dup2(get_lock_file_fd(&log_lock), 2);
		sigchain_push_common(process_log_file_on_signal);
		atexit(process_log_file_at_exit);
	}
 
	gc_before_repack();
 
	if (!repository_format_precious_objects) {
		close_all_packs(the_repository->objects);
		if (run_command_v_opt(repack.argv, RUN_GIT_CMD))
			die(FAILED_RUN, repack.argv[0]);
 
		if (prune_expire) {
			argv_array_push(&prune, prune_expire);
			if (quiet)
				argv_array_push(&prune, "--no-progress");
			if (repository_format_partial_clone)
				argv_array_push(&prune,
						"--exclude-promisor-objects");
			if (run_command_v_opt(prune.argv, RUN_GIT_CMD))
				die(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))
			die(FAILED_RUN, prune_worktrees.argv[0]);
	}
 
	if (run_command_v_opt(rerere.argv, RUN_GIT_CMD))
		die(FAILED_RUN, rerere.argv[0]);
 
	report_garbage = report_pack_garbage;
	reprepare_packed_git(the_repository);
	if (pack_garbage.nr > 0) {
		close_all_packs(the_repository->objects);
		clean_pack_garbage();
	}
 
	if (gc_write_commit_graph &&
	    write_commit_graph_reachable(get_object_directory(), 0,
					 !quiet && !daemonized))
		return 1;
 
	if (auto_gc && too_many_loose_objects())
		warning(_("There are too many unreachable loose objects; "
			"run 'git prune' to remove them."));
 
	if (!daemonized)
		unlink(git_path("gc.log"));
 
	return 0;
}