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