builtin/gc.c

   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
  13 #include "builtin.h"
  14 #include "repository.h"
  15 #include "config.h"
  16 #include "tempfile.h"
  17 #include "lockfile.h"
  18 #include "parse-options.h"
  19 #include "run-command.h"
  20 #include "sigchain.h"
  21 #include "argv-array.h"
  22 #include "commit.h"
  23 #include "commit-graph.h"
  24 #include "packfile.h"
  25 #include "object-store.h"
  26 #include "pack.h"
  27 #include "pack-objects.h"
  28 #include "blob.h"
  29 #include "tree.h"
  30 #include "promisor-remote.h"
  31
  32 #define FAILED_RUN "failed to run %s"
  33
  34 static const char * const builtin_gc_usage[] = {
  35         N_("git gc [<options>]"),
  36         NULL
  37 };
  38
  39 static int pack_refs = 1;
  40 static int prune_reflogs = 1;
  41 static int aggressive_depth = 50;
  42 static int aggressive_window = 250;
  43 static int gc_auto_threshold = 6700;
  44 static int gc_auto_pack_limit = 50;
  45 static int detach_auto = 1;
  46 static timestamp_t gc_log_expire_time;
  47 static const char *gc_log_expire = "1.day.ago";
  48 static const char *prune_expire = "2.weeks.ago";
  49 static const char *prune_worktrees_expire = "3.months.ago";
  50 static unsigned long big_pack_threshold;
  51 static unsigned long max_delta_cache_size = DEFAULT_DELTA_CACHE_SIZE;
  52
  53 static struct argv_array pack_refs_cmd = ARGV_ARRAY_INIT;
  54 static struct argv_array reflog = ARGV_ARRAY_INIT;
  55 static struct argv_array repack = ARGV_ARRAY_INIT;
  56 static struct argv_array prune = ARGV_ARRAY_INIT;
  57 static struct argv_array prune_worktrees = ARGV_ARRAY_INIT;
  58 static struct argv_array rerere = ARGV_ARRAY_INIT;
  59
  60 static struct tempfile *pidfile;
  61 static struct lock_file log_lock;
  62
  63 static struct string_list pack_garbage = STRING_LIST_INIT_DUP;
  64
  65 static void clean_pack_garbage(void)
  66 {
  67         int i;
  68         for (i = 0; i < pack_garbage.nr; i++)
  69                 unlink_or_warn(pack_garbage.items[i].string);
  70         string_list_clear(&pack_garbage, 0);
  71 }
  72
  73 static void report_pack_garbage(unsigned seen_bits, const char *path)
  74 {
  75         if (seen_bits == PACKDIR_FILE_IDX)
  76                 string_list_append(&pack_garbage, path);
  77 }
  78
  79 static void process_log_file(void)
  80 {
  81         struct stat st;
  82         if (fstat(get_lock_file_fd(&log_lock), &st)) {
  83                 /*
  84                  * Perhaps there was an i/o error or another
  85                  * unlikely situation.  Try to make a note of
  86                  * this in gc.log along with any existing
  87                  * messages.
  88                  */
  89                 int saved_errno = errno;
  90                 fprintf(stderr, _("Failed to fstat %s: %s"),
  91                         get_tempfile_path(log_lock.tempfile),
  92                         strerror(saved_errno));
  93                 fflush(stderr);
  94                 commit_lock_file(&log_lock);
  95                 errno = saved_errno;
  96         } else if (st.st_size) {
  97                 /* There was some error recorded in the lock file */
  98                 commit_lock_file(&log_lock);
  99         } else {
 100                 /* No error, clean up any old gc.log */
 101                 unlink(git_path("gc.log"));
 102                 rollback_lock_file(&log_lock);
 103         }
 104 }
 105
 106 static void process_log_file_at_exit(void)
 107 {
 108         fflush(stderr);
 109         process_log_file();
 110 }
 111
 112 static void process_log_file_on_signal(int signo)
 113 {
 114         process_log_file();
 115         sigchain_pop(signo);
 116         raise(signo);
 117 }
 118
 119 static int gc_config_is_timestamp_never(const char *var)
 120 {
 121         const char *value;
 122         timestamp_t expire;
 123
 124         if (!git_config_get_value(var, &value) && value) {
 125                 if (parse_expiry_date(value, &expire))
 126                         die(_("failed to parse '%s' value '%s'"), var, value);
 127                 return expire == 0;
 128         }
 129         return 0;
 130 }
 131
 132 static void gc_config(void)
 133 {
 134         const char *value;
 135
 136         if (!git_config_get_value("gc.packrefs", &value)) {
 137                 if (value && !strcmp(value, "notbare"))
 138                         pack_refs = -1;
 139                 else
 140                         pack_refs = git_config_bool("gc.packrefs", value);
 141         }
 142
 143         if (gc_config_is_timestamp_never("gc.reflogexpire") &&
 144             gc_config_is_timestamp_never("gc.reflogexpireunreachable"))
 145                 prune_reflogs = 0;
 146
 147         git_config_get_int("gc.aggressivewindow", &aggressive_window);
 148         git_config_get_int("gc.aggressivedepth", &aggressive_depth);
 149         git_config_get_int("gc.auto", &gc_auto_threshold);
 150         git_config_get_int("gc.autopacklimit", &gc_auto_pack_limit);
 151         git_config_get_bool("gc.autodetach", &detach_auto);
 152         git_config_get_expiry("gc.pruneexpire", &prune_expire);
 153         git_config_get_expiry("gc.worktreepruneexpire", &prune_worktrees_expire);
 154         git_config_get_expiry("gc.logexpiry", &gc_log_expire);
 155
 156         git_config_get_ulong("gc.bigpackthreshold", &big_pack_threshold);
 157         git_config_get_ulong("pack.deltacachesize", &max_delta_cache_size);
 158
 159         git_config(git_default_config, NULL);
 160 }
 161
 162 static int too_many_loose_objects(void)
 163 {
 164         /*
 165          * Quickly check if a "gc" is needed, by estimating how
 166          * many loose objects there are.  Because SHA-1 is evenly
 167          * distributed, we can check only one and get a reasonable
 168          * estimate.
 169          */
 170         DIR *dir;
 171         struct dirent *ent;
 172         int auto_threshold;
 173         int num_loose = 0;
 174         int needed = 0;
 175         const unsigned hexsz_loose = the_hash_algo->hexsz - 2;
 176
 177         dir = opendir(git_path("objects/17"));
 178         if (!dir)
 179                 return 0;
 180
 181         auto_threshold = DIV_ROUND_UP(gc_auto_threshold, 256);
 182         while ((ent = readdir(dir)) != NULL) {
 183                 if (strspn(ent->d_name, "0123456789abcdef") != hexsz_loose ||
 184                     ent->d_name[hexsz_loose] != '\0')
 185                         continue;
 186                 if (++num_loose > auto_threshold) {
 187                         needed = 1;
 188                         break;
 189                 }
 190         }
 191         closedir(dir);
 192         return needed;
 193 }
 194
 195 static struct packed_git *find_base_packs(struct string_list *packs,
 196                                           unsigned long limit)
 197 {
 198         struct packed_git *p, *base = NULL;
 199
 200         for (p = get_all_packs(the_repository); p; p = p->next) {
 201                 if (!p->pack_local)
 202                         continue;
 203                 if (limit) {
 204                         if (p->pack_size >= limit)
 205                                 string_list_append(packs, p->pack_name);
 206                 } else if (!base || base->pack_size < p->pack_size) {
 207                         base = p;
 208                 }
 209         }
 210
 211         if (base)
 212                 string_list_append(packs, base->pack_name);
 213
 214         return base;
 215 }
 216
 217 static int too_many_packs(void)
 218 {
 219         struct packed_git *p;
 220         int cnt;
 221
 222         if (gc_auto_pack_limit <= 0)
 223                 return 0;
 224
 225         for (cnt = 0, p = get_all_packs(the_repository); p; p = p->next) {
 226                 if (!p->pack_local)
 227                         continue;
 228                 if (p->pack_keep)
 229                         continue;
 230                 /*
 231                  * Perhaps check the size of the pack and count only
 232                  * very small ones here?
 233                  */
 234                 cnt++;
 235         }
 236         return gc_auto_pack_limit < cnt;
 237 }
 238
 239 static uint64_t total_ram(void)
 240 {
 241 #if defined(HAVE_SYSINFO)
 242         struct sysinfo si;
 243
 244         if (!sysinfo(&si))
 245                 return si.totalram;
 246 #elif defined(HAVE_BSD_SYSCTL) && (defined(HW_MEMSIZE) || defined(HW_PHYSMEM))
 247         int64_t physical_memory;
 248         int mib[2];
 249         size_t length;
 250
 251         mib[0] = CTL_HW;
 252 # if defined(HW_MEMSIZE)
 253         mib[1] = HW_MEMSIZE;
 254 # else
 255         mib[1] = HW_PHYSMEM;
 256 # endif
 257         length = sizeof(int64_t);
 258         if (!sysctl(mib, 2, &physical_memory, &length, NULL, 0))
 259                 return physical_memory;
 260 #elif defined(GIT_WINDOWS_NATIVE)
 261         MEMORYSTATUSEX memInfo;
 262
 263         memInfo.dwLength = sizeof(MEMORYSTATUSEX);
 264         if (GlobalMemoryStatusEx(&memInfo))
 265                 return memInfo.ullTotalPhys;
 266 #endif
 267         return 0;
 268 }
 269
 270 static uint64_t estimate_repack_memory(struct packed_git *pack)
 271 {
 272         unsigned long nr_objects = approximate_object_count();
 273         size_t os_cache, heap;
 274
 275         if (!pack || !nr_objects)
 276                 return 0;
 277
 278         /*
 279          * First we have to scan through at least one pack.
 280          * Assume enough room in OS file cache to keep the entire pack
 281          * or we may accidentally evict data of other processes from
 282          * the cache.
 283          */
 284         os_cache = pack->pack_size + pack->index_size;
 285         /* then pack-objects needs lots more for book keeping */
 286         heap = sizeof(struct object_entry) * nr_objects;
 287         /*
 288          * internal rev-list --all --objects takes up some memory too,
 289          * let's say half of it is for blobs
 290          */
 291         heap += sizeof(struct blob) * nr_objects / 2;
 292         /*
 293          * and the other half is for trees (commits and tags are
 294          * usually insignificant)
 295          */
 296         heap += sizeof(struct tree) * nr_objects / 2;
 297         /* and then obj_hash[], underestimated in fact */
 298         heap += sizeof(struct object *) * nr_objects;
 299         /* revindex is used also */
 300         heap += sizeof(struct revindex_entry) * nr_objects;
 301         /*
 302          * read_sha1_file() (either at delta calculation phase, or
 303          * writing phase) also fills up the delta base cache
 304          */
 305         heap += delta_base_cache_limit;
 306         /* and of course pack-objects has its own delta cache */
 307         heap += max_delta_cache_size;
 308
 309         return os_cache + heap;
 310 }
 311
 312 static int keep_one_pack(struct string_list_item *item, void *data)
 313 {
 314         argv_array_pushf(&repack, "--keep-pack=%s", basename(item->string));
 315         return 0;
 316 }
 317
 318 static void add_repack_all_option(struct string_list *keep_pack)
 319 {
 320         if (prune_expire && !strcmp(prune_expire, "now"))
 321                 argv_array_push(&repack, "-a");
 322         else {
 323                 argv_array_push(&repack, "-A");
 324                 if (prune_expire)
 325                         argv_array_pushf(&repack, "--unpack-unreachable=%s", prune_expire);
 326         }
 327
 328         if (keep_pack)
 329                 for_each_string_list(keep_pack, keep_one_pack, NULL);
 330 }
 331
 332 static void add_repack_incremental_option(void)
 333 {
 334         argv_array_push(&repack, "--no-write-bitmap-index");
 335 }
 336
 337 static int need_to_gc(void)
 338 {
 339         /*
 340          * Setting gc.auto to 0 or negative can disable the
 341          * automatic gc.
 342          */
 343         if (gc_auto_threshold <= 0)
 344                 return 0;
 345
 346         /*
 347          * If there are too many loose objects, but not too many
 348          * packs, we run "repack -d -l".  If there are too many packs,
 349          * we run "repack -A -d -l".  Otherwise we tell the caller
 350          * there is no need.
 351          */
 352         if (too_many_packs()) {
 353                 struct string_list keep_pack = STRING_LIST_INIT_NODUP;
 354
 355                 if (big_pack_threshold) {
 356                         find_base_packs(&keep_pack, big_pack_threshold);
 357                         if (keep_pack.nr >= gc_auto_pack_limit) {
 358                                 big_pack_threshold = 0;
 359                                 string_list_clear(&keep_pack, 0);
 360                                 find_base_packs(&keep_pack, 0);
 361                         }
 362                 } else {
 363                         struct packed_git *p = find_base_packs(&keep_pack, 0);
 364                         uint64_t mem_have, mem_want;
 365
 366                         mem_have = total_ram();
 367                         mem_want = estimate_repack_memory(p);
 368
 369                         /*
 370                          * Only allow 1/2 of memory for pack-objects, leave
 371                          * the rest for the OS and other processes in the
 372                          * system.
 373                          */
 374                         if (!mem_have || mem_want < mem_have / 2)
 375                                 string_list_clear(&keep_pack, 0);
 376                 }
 377
 378                 add_repack_all_option(&keep_pack);
 379                 string_list_clear(&keep_pack, 0);
 380         } else if (too_many_loose_objects())
 381                 add_repack_incremental_option();
 382         else
 383                 return 0;
 384
 385         if (run_hook_le(NULL, "pre-auto-gc", NULL))
 386                 return 0;
 387         return 1;
 388 }
 389
 390 /* return NULL on success, else hostname running the gc */
 391 static const char *lock_repo_for_gc(int force, pid_t* ret_pid)
 392 {
 393         struct lock_file lock = LOCK_INIT;
 394         char my_host[HOST_NAME_MAX + 1];
 395         struct strbuf sb = STRBUF_INIT;
 396         struct stat st;
 397         uintmax_t pid;
 398         FILE *fp;
 399         int fd;
 400         char *pidfile_path;
 401
 402         if (is_tempfile_active(pidfile))
 403                 /* already locked */
 404                 return NULL;
 405
 406         if (xgethostname(my_host, sizeof(my_host)))
 407                 xsnprintf(my_host, sizeof(my_host), "unknown");
 408
 409         pidfile_path = git_pathdup("gc.pid");
 410         fd = hold_lock_file_for_update(&lock, pidfile_path,
 411                                        LOCK_DIE_ON_ERROR);
 412         if (!force) {
 413                 static char locking_host[HOST_NAME_MAX + 1];
 414                 static char *scan_fmt;
 415                 int should_exit;
 416
 417                 if (!scan_fmt)
 418                         scan_fmt = xstrfmt("%s %%%ds", "%"SCNuMAX, HOST_NAME_MAX);
 419                 fp = fopen(pidfile_path, "r");
 420                 memset(locking_host, 0, sizeof(locking_host));
 421                 should_exit =
 422                         fp != NULL &&
 423                         !fstat(fileno(fp), &st) &&
 424                         /*
 425                          * 12 hour limit is very generous as gc should
 426                          * never take that long. On the other hand we
 427                          * don't really need a strict limit here,
 428                          * running gc --auto one day late is not a big
 429                          * problem. --force can be used in manual gc
 430                          * after the user verifies that no gc is
 431                          * running.
 432                          */
 433                         time(NULL) - st.st_mtime <= 12 * 3600 &&
 434                         fscanf(fp, scan_fmt, &pid, locking_host) == 2 &&
 435                         /* be gentle to concurrent "gc" on remote hosts */
 436                         (strcmp(locking_host, my_host) || !kill(pid, 0) || errno == EPERM);
 437                 if (fp != NULL)
 438                         fclose(fp);
 439                 if (should_exit) {
 440                         if (fd >= 0)
 441                                 rollback_lock_file(&lock);
 442                         *ret_pid = pid;
 443                         free(pidfile_path);
 444                         return locking_host;
 445                 }
 446         }
 447
 448         strbuf_addf(&sb, "%"PRIuMAX" %s",
 449                     (uintmax_t) getpid(), my_host);
 450         write_in_full(fd, sb.buf, sb.len);
 451         strbuf_release(&sb);
 452         commit_lock_file(&lock);
 453         pidfile = register_tempfile(pidfile_path);
 454         free(pidfile_path);
 455         return NULL;
 456 }
 457
 458 /*
 459  * Returns 0 if there was no previous error and gc can proceed, 1 if
 460  * gc should not proceed due to an error in the last run. Prints a
 461  * message and returns -1 if an error occurred while reading gc.log
 462  */
 463 static int report_last_gc_error(void)
 464 {
 465         struct strbuf sb = STRBUF_INIT;
 466         int ret = 0;
 467         ssize_t len;
 468         struct stat st;
 469         char *gc_log_path = git_pathdup("gc.log");
 470
 471         if (stat(gc_log_path, &st)) {
 472                 if (errno == ENOENT)
 473                         goto done;
 474
 475                 ret = error_errno(_("cannot stat '%s'"), gc_log_path);
 476                 goto done;
 477         }
 478
 479         if (st.st_mtime < gc_log_expire_time)
 480                 goto done;
 481
 482         len = strbuf_read_file(&sb, gc_log_path, 0);
 483         if (len < 0)
 484                 ret = error_errno(_("cannot read '%s'"), gc_log_path);
 485         else if (len > 0) {
 486                 /*
 487                  * A previous gc failed.  Report the error, and don't
 488                  * bother with an automatic gc run since it is likely
 489                  * to fail in the same way.
 490                  */
 491                 warning(_("The last gc run reported the following. "
 492                                "Please correct the root cause\n"
 493                                "and remove %s.\n"
 494                                "Automatic cleanup will not be performed "
 495                                "until the file is removed.\n\n"
 496                                "%s"),
 497                             gc_log_path, sb.buf);
 498                 ret = 1;
 499         }
 500         strbuf_release(&sb);
 501 done:
 502         free(gc_log_path);
 503         return ret;
 504 }
 505
 506 static void gc_before_repack(void)
 507 {
 508         /*
 509          * We may be called twice, as both the pre- and
 510          * post-daemonized phases will call us, but running these
 511          * commands more than once is pointless and wasteful.
 512          */
 513         static int done = 0;
 514         if (done++)
 515                 return;
 516
 517         if (pack_refs && run_command_v_opt(pack_refs_cmd.argv, RUN_GIT_CMD))
 518                 die(FAILED_RUN, pack_refs_cmd.argv[0]);
 519
 520         if (prune_reflogs && run_command_v_opt(reflog.argv, RUN_GIT_CMD))
 521                 die(FAILED_RUN, reflog.argv[0]);
 522 }
 523
 524 int cmd_gc(int argc, const char **argv, const char *prefix)
 525 {
 526         int aggressive = 0;
 527         int auto_gc = 0;
 528         int quiet = 0;
 529         int force = 0;
 530         const char *name;
 531         pid_t pid;
 532         int daemonized = 0;
 533         int keep_base_pack = -1;
 534         timestamp_t dummy;
 535
 536         struct option builtin_gc_options[] = {
 537                 OPT__QUIET(&quiet, N_("suppress progress reporting")),
 538                 { OPTION_STRING, 0, "prune", &prune_expire, N_("date"),
 539                         N_("prune unreferenced objects"),
 540                         PARSE_OPT_OPTARG, NULL, (intptr_t)prune_expire },
 541                 OPT_BOOL(0, "aggressive", &aggressive, N_("be more thorough (increased runtime)")),
 542                 OPT_BOOL_F(0, "auto", &auto_gc, N_("enable auto-gc mode"),
 543                            PARSE_OPT_NOCOMPLETE),
 544                 OPT_BOOL_F(0, "force", &force,
 545                            N_("force running gc even if there may be another gc running"),
 546                            PARSE_OPT_NOCOMPLETE),
 547                 OPT_BOOL(0, "keep-largest-pack", &keep_base_pack,
 548                          N_("repack all other packs except the largest pack")),
 549                 OPT_END()
 550         };
 551
 552         if (argc == 2 && !strcmp(argv[1], "-h"))
 553                 usage_with_options(builtin_gc_usage, builtin_gc_options);
 554
 555         argv_array_pushl(&pack_refs_cmd, "pack-refs", "--all", "--prune", NULL);
 556         argv_array_pushl(&reflog, "reflog", "expire", "--all", NULL);
 557         argv_array_pushl(&repack, "repack", "-d", "-l", NULL);
 558         argv_array_pushl(&prune, "prune", "--expire", NULL);
 559         argv_array_pushl(&prune_worktrees, "worktree", "prune", "--expire", NULL);
 560         argv_array_pushl(&rerere, "rerere", "gc", NULL);
 561
 562         /* default expiry time, overwritten in gc_config */
 563         gc_config();
 564         if (parse_expiry_date(gc_log_expire, &gc_log_expire_time))
 565                 die(_("failed to parse gc.logexpiry value %s"), gc_log_expire);
 566
 567         if (pack_refs < 0)
 568                 pack_refs = !is_bare_repository();
 569
 570         argc = parse_options(argc, argv, prefix, builtin_gc_options,
 571                              builtin_gc_usage, 0);
 572         if (argc > 0)
 573                 usage_with_options(builtin_gc_usage, builtin_gc_options);
 574
 575         if (prune_expire && parse_expiry_date(prune_expire, &dummy))
 576                 die(_("failed to parse prune expiry value %s"), prune_expire);
 577
 578         if (aggressive) {
 579                 argv_array_push(&repack, "-f");
 580                 if (aggressive_depth > 0)
 581                         argv_array_pushf(&repack, "--depth=%d", aggressive_depth);
 582                 if (aggressive_window > 0)
 583                         argv_array_pushf(&repack, "--window=%d", aggressive_window);
 584         }
 585         if (quiet)
 586                 argv_array_push(&repack, "-q");
 587
 588         if (auto_gc) {
 589                 /*
 590                  * Auto-gc should be least intrusive as possible.
 591                  */
 592                 if (!need_to_gc())
 593                         return 0;
 594                 if (!quiet) {
 595                         if (detach_auto)
 596                                 fprintf(stderr, _("Auto packing the repository in background for optimum performance.\n"));
 597                         else
 598                                 fprintf(stderr, _("Auto packing the repository for optimum performance.\n"));
 599                         fprintf(stderr, _("See \"git help gc\" for manual housekeeping.\n"));
 600                 }
 601                 if (detach_auto) {
 602                         int ret = report_last_gc_error();
 603                         if (ret < 0)
 604                                 /* an I/O error occurred, already reported */
 605                                 exit(128);
 606                         if (ret == 1)
 607                                 /* Last gc --auto failed. Skip this one. */
 608                                 return 0;
 609
 610                         if (lock_repo_for_gc(force, &pid))
 611                                 return 0;
 612                         gc_before_repack(); /* dies on failure */
 613                         delete_tempfile(&pidfile);
 614
 615                         /*
 616                          * failure to daemonize is ok, we'll continue
 617                          * in foreground
 618                          */
 619                         daemonized = !daemonize();
 620                 }
 621         } else {
 622                 struct string_list keep_pack = STRING_LIST_INIT_NODUP;
 623
 624                 if (keep_base_pack != -1) {
 625                         if (keep_base_pack)
 626                                 find_base_packs(&keep_pack, 0);
 627                 } else if (big_pack_threshold) {
 628                         find_base_packs(&keep_pack, big_pack_threshold);
 629                 }
 630
 631                 add_repack_all_option(&keep_pack);
 632                 string_list_clear(&keep_pack, 0);
 633         }
 634
 635         name = lock_repo_for_gc(force, &pid);
 636         if (name) {
 637                 if (auto_gc)
 638                         return 0; /* be quiet on --auto */
 639                 die(_("gc is already running on machine '%s' pid %"PRIuMAX" (use --force if not)"),
 640                     name, (uintmax_t)pid);
 641         }
 642
 643         if (daemonized) {
 644                 hold_lock_file_for_update(&log_lock,
 645                                           git_path("gc.log"),
 646                                           LOCK_DIE_ON_ERROR);
 647                 dup2(get_lock_file_fd(&log_lock), 2);
 648                 sigchain_push_common(process_log_file_on_signal);
 649                 atexit(process_log_file_at_exit);
 650         }
 651
 652         gc_before_repack();
 653
 654         if (!repository_format_precious_objects) {
 655                 close_object_store(the_repository->objects);
 656                 if (run_command_v_opt(repack.argv, RUN_GIT_CMD))
 657                         die(FAILED_RUN, repack.argv[0]);
 658
 659                 if (prune_expire) {
 660                         argv_array_push(&prune, prune_expire);
 661                         if (quiet)
 662                                 argv_array_push(&prune, "--no-progress");
 663                         if (has_promisor_remote())
 664                                 argv_array_push(&prune,
 665                                                 "--exclude-promisor-objects");
 666                         if (run_command_v_opt(prune.argv, RUN_GIT_CMD))
 667                                 die(FAILED_RUN, prune.argv[0]);
 668                 }
 669         }
 670
 671         if (prune_worktrees_expire) {
 672                 argv_array_push(&prune_worktrees, prune_worktrees_expire);
 673                 if (run_command_v_opt(prune_worktrees.argv, RUN_GIT_CMD))
 674                         die(FAILED_RUN, prune_worktrees.argv[0]);
 675         }
 676
 677         if (run_command_v_opt(rerere.argv, RUN_GIT_CMD))
 678                 die(FAILED_RUN, rerere.argv[0]);
 679
 680         report_garbage = report_pack_garbage;
 681         reprepare_packed_git(the_repository);
 682         if (pack_garbage.nr > 0) {
 683                 close_object_store(the_repository->objects);
 684                 clean_pack_garbage();
 685         }
 686
 687         prepare_repo_settings(the_repository);
 688         if (the_repository->settings.gc_write_commit_graph == 1)
 689                 write_commit_graph_reachable(get_object_directory(),
 690                                              !quiet && !daemonized ? COMMIT_GRAPH_WRITE_PROGRESS : 0,
 691                                              NULL);
 692
 693         if (auto_gc && too_many_loose_objects())
 694                 warning(_("There are too many unreachable loose objects; "
 695                         "run 'git prune' to remove them."));
 696
 697         if (!daemonized)
 698                 unlink(git_path("gc.log"));
 699
 700         return 0;
 701 }