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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 "strvec.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 strvec pack_refs_cmd = STRVEC_INIT; | |
54 | static struct strvec reflog = STRVEC_INIT; | |
55 | static struct strvec repack = STRVEC_INIT; | |
56 | static struct strvec prune = STRVEC_INIT; | |
57 | static struct strvec prune_worktrees = STRVEC_INIT; | |
58 | static struct strvec rerere = STRVEC_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 | strvec_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 | strvec_push(&repack, "-a"); | |
322 | else { | |
323 | strvec_push(&repack, "-A"); | |
324 | if (prune_expire) | |
325 | strvec_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 | strvec_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.v, RUN_GIT_CMD)) | |
518 | die(FAILED_RUN, pack_refs_cmd.v[0]); | |
519 | ||
520 | if (prune_reflogs && run_command_v_opt(reflog.v, RUN_GIT_CMD)) | |
521 | die(FAILED_RUN, reflog.v[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 | strvec_pushl(&pack_refs_cmd, "pack-refs", "--all", "--prune", NULL); | |
556 | strvec_pushl(&reflog, "reflog", "expire", "--all", NULL); | |
557 | strvec_pushl(&repack, "repack", "-d", "-l", NULL); | |
558 | strvec_pushl(&prune, "prune", "--expire", NULL); | |
559 | strvec_pushl(&prune_worktrees, "worktree", "prune", "--expire", NULL); | |
560 | strvec_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 | strvec_push(&repack, "-f"); | |
580 | if (aggressive_depth > 0) | |
581 | strvec_pushf(&repack, "--depth=%d", aggressive_depth); | |
582 | if (aggressive_window > 0) | |
583 | strvec_pushf(&repack, "--window=%d", aggressive_window); | |
584 | } | |
585 | if (quiet) | |
586 | strvec_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.v, RUN_GIT_CMD)) | |
657 | die(FAILED_RUN, repack.v[0]); | |
658 | ||
659 | if (prune_expire) { | |
660 | strvec_push(&prune, prune_expire); | |
661 | if (quiet) | |
662 | strvec_push(&prune, "--no-progress"); | |
663 | if (has_promisor_remote()) | |
664 | strvec_push(&prune, | |
665 | "--exclude-promisor-objects"); | |
666 | if (run_command_v_opt(prune.v, RUN_GIT_CMD)) | |
667 | die(FAILED_RUN, prune.v[0]); | |
668 | } | |
669 | } | |
670 | ||
671 | if (prune_worktrees_expire) { | |
672 | strvec_push(&prune_worktrees, prune_worktrees_expire); | |
673 | if (run_command_v_opt(prune_worktrees.v, RUN_GIT_CMD)) | |
674 | die(FAILED_RUN, prune_worktrees.v[0]); | |
675 | } | |
676 | ||
677 | if (run_command_v_opt(rerere.v, RUN_GIT_CMD)) | |
678 | die(FAILED_RUN, rerere.v[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(the_repository->objects->odb, | |
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 | } | |
702 | ||
703 | static const char * const builtin_maintenance_run_usage[] = { | |
704 | N_("git maintenance run [--auto] [--[no-]quiet]"), | |
705 | NULL | |
706 | }; | |
707 | ||
708 | struct maintenance_run_opts { | |
709 | int auto_flag; | |
710 | int quiet; | |
711 | }; | |
712 | ||
713 | static int run_write_commit_graph(struct maintenance_run_opts *opts) | |
714 | { | |
715 | struct child_process child = CHILD_PROCESS_INIT; | |
716 | ||
717 | child.git_cmd = 1; | |
718 | strvec_pushl(&child.args, "commit-graph", "write", | |
719 | "--split", "--reachable", NULL); | |
720 | ||
721 | if (opts->quiet) | |
722 | strvec_push(&child.args, "--no-progress"); | |
723 | ||
724 | return !!run_command(&child); | |
725 | } | |
726 | ||
727 | static int maintenance_task_commit_graph(struct maintenance_run_opts *opts) | |
728 | { | |
729 | close_object_store(the_repository->objects); | |
730 | if (run_write_commit_graph(opts)) { | |
731 | error(_("failed to write commit-graph")); | |
732 | return 1; | |
733 | } | |
734 | ||
735 | return 0; | |
736 | } | |
737 | ||
738 | static int maintenance_task_gc(struct maintenance_run_opts *opts) | |
739 | { | |
740 | struct child_process child = CHILD_PROCESS_INIT; | |
741 | ||
742 | child.git_cmd = 1; | |
743 | strvec_push(&child.args, "gc"); | |
744 | ||
745 | if (opts->auto_flag) | |
746 | strvec_push(&child.args, "--auto"); | |
747 | if (opts->quiet) | |
748 | strvec_push(&child.args, "--quiet"); | |
749 | else | |
750 | strvec_push(&child.args, "--no-quiet"); | |
751 | ||
752 | close_object_store(the_repository->objects); | |
753 | return run_command(&child); | |
754 | } | |
755 | ||
756 | typedef int maintenance_task_fn(struct maintenance_run_opts *opts); | |
757 | ||
758 | struct maintenance_task { | |
759 | const char *name; | |
760 | maintenance_task_fn *fn; | |
761 | unsigned enabled:1; | |
762 | }; | |
763 | ||
764 | enum maintenance_task_label { | |
765 | TASK_GC, | |
766 | TASK_COMMIT_GRAPH, | |
767 | ||
768 | /* Leave as final value */ | |
769 | TASK__COUNT | |
770 | }; | |
771 | ||
772 | static struct maintenance_task tasks[] = { | |
773 | [TASK_GC] = { | |
774 | "gc", | |
775 | maintenance_task_gc, | |
776 | 1, | |
777 | }, | |
778 | [TASK_COMMIT_GRAPH] = { | |
779 | "commit-graph", | |
780 | maintenance_task_commit_graph, | |
781 | }, | |
782 | }; | |
783 | ||
784 | static int maintenance_run_tasks(struct maintenance_run_opts *opts) | |
785 | { | |
786 | int i; | |
787 | int result = 0; | |
788 | ||
789 | for (i = 0; i < TASK__COUNT; i++) { | |
790 | if (!tasks[i].enabled) | |
791 | continue; | |
792 | ||
793 | if (tasks[i].fn(opts)) { | |
794 | error(_("task '%s' failed"), tasks[i].name); | |
795 | result = 1; | |
796 | } | |
797 | } | |
798 | ||
799 | return result; | |
800 | } | |
801 | ||
802 | static int maintenance_run(int argc, const char **argv, const char *prefix) | |
803 | { | |
804 | struct maintenance_run_opts opts; | |
805 | struct option builtin_maintenance_run_options[] = { | |
806 | OPT_BOOL(0, "auto", &opts.auto_flag, | |
807 | N_("run tasks based on the state of the repository")), | |
808 | OPT_BOOL(0, "quiet", &opts.quiet, | |
809 | N_("do not report progress or other information over stderr")), | |
810 | OPT_END() | |
811 | }; | |
812 | memset(&opts, 0, sizeof(opts)); | |
813 | ||
814 | opts.quiet = !isatty(2); | |
815 | ||
816 | argc = parse_options(argc, argv, prefix, | |
817 | builtin_maintenance_run_options, | |
818 | builtin_maintenance_run_usage, | |
819 | PARSE_OPT_STOP_AT_NON_OPTION); | |
820 | ||
821 | if (argc != 0) | |
822 | usage_with_options(builtin_maintenance_run_usage, | |
823 | builtin_maintenance_run_options); | |
824 | return maintenance_run_tasks(&opts); | |
825 | } | |
826 | ||
827 | static const char builtin_maintenance_usage[] = N_("git maintenance run [<options>]"); | |
828 | ||
829 | int cmd_maintenance(int argc, const char **argv, const char *prefix) | |
830 | { | |
831 | if (argc < 2 || | |
832 | (argc == 2 && !strcmp(argv[1], "-h"))) | |
833 | usage(builtin_maintenance_usage); | |
834 | ||
835 | if (!strcmp(argv[1], "run")) | |
836 | return maintenance_run(argc - 1, argv + 1, prefix); | |
837 | ||
838 | die(_("invalid subcommand: %s"), argv[1]); | |
839 | } |