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-rw-r--r--builtin/gc.c190
1 files changed, 128 insertions, 62 deletions
diff --git a/builtin/gc.c b/builtin/gc.c
index 8d219d8c42..c583aad6ec 100644
--- a/builtin/gc.c
+++ b/builtin/gc.c
@@ -11,7 +11,8 @@
*/
#include "builtin.h"
-#include "cache.h"
+#include "tempfile.h"
+#include "lockfile.h"
#include "parse-options.h"
#include "run-command.h"
#include "sigchain.h"
@@ -21,7 +22,7 @@
#define FAILED_RUN "failed to run %s"
static const char * const builtin_gc_usage[] = {
- N_("git gc [options]"),
+ N_("git gc [<options>]"),
NULL
};
@@ -33,66 +34,86 @@ static int gc_auto_threshold = 6700;
static int gc_auto_pack_limit = 50;
static int detach_auto = 1;
static const char *prune_expire = "2.weeks.ago";
+static const char *prune_worktrees_expire = "3.months.ago";
static struct argv_array pack_refs_cmd = ARGV_ARRAY_INIT;
static struct argv_array reflog = ARGV_ARRAY_INIT;
static struct argv_array repack = ARGV_ARRAY_INIT;
static struct argv_array prune = ARGV_ARRAY_INIT;
+static struct argv_array prune_worktrees = ARGV_ARRAY_INIT;
static struct argv_array rerere = ARGV_ARRAY_INIT;
-static char *pidfile;
+static struct tempfile pidfile;
+static struct lock_file log_lock;
-static void remove_pidfile(void)
+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 git_config_date_string(const char *key, const char **output)
+{
+ if (git_config_get_string_const(key, output))
+ return;
+ if (strcmp(*output, "now")) {
+ unsigned long now = approxidate("now");
+ if (approxidate(*output) >= now)
+ git_die_config(key, _("Invalid %s: '%s'"), key, *output);
+ }
+}
+
+static void process_log_file(void)
{
- if (pidfile)
- unlink(pidfile);
+ struct stat st;
+ if (!fstat(get_lock_file_fd(&log_lock), &st) && st.st_size)
+ commit_lock_file(&log_lock);
+ else
+ rollback_lock_file(&log_lock);
}
-static void remove_pidfile_on_signal(int signo)
+static void process_log_file_at_exit(void)
{
- remove_pidfile();
+ fflush(stderr);
+ process_log_file();
+}
+
+static void process_log_file_on_signal(int signo)
+{
+ process_log_file();
sigchain_pop(signo);
raise(signo);
}
-static int gc_config(const char *var, const char *value, void *cb)
+static void gc_config(void)
{
- if (!strcmp(var, "gc.packrefs")) {
+ 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(var, value);
- return 0;
- }
- if (!strcmp(var, "gc.aggressivewindow")) {
- aggressive_window = git_config_int(var, value);
- return 0;
- }
- if (!strcmp(var, "gc.aggressivedepth")) {
- aggressive_depth = git_config_int(var, value);
- return 0;
- }
- if (!strcmp(var, "gc.auto")) {
- gc_auto_threshold = git_config_int(var, value);
- return 0;
+ pack_refs = git_config_bool("gc.packrefs", value);
}
- if (!strcmp(var, "gc.autopacklimit")) {
- gc_auto_pack_limit = git_config_int(var, value);
- return 0;
- }
- if (!strcmp(var, "gc.autodetach")) {
- detach_auto = git_config_bool(var, value);
- return 0;
- }
- if (!strcmp(var, "gc.pruneexpire")) {
- if (value && strcmp(value, "now")) {
- unsigned long now = approxidate("now");
- if (approxidate(value) >= now)
- return error(_("Invalid %s: '%s'"), var, value);
- }
- return git_config_string(&prune_expire, var, value);
- }
- return git_default_config(var, value, cb);
+
+ git_config_get_int("gc.aggressivewindow", &aggressive_window);
+ git_config_get_int("gc.aggressivedepth", &aggressive_depth);
+ git_config_get_int("gc.auto", &gc_auto_threshold);
+ git_config_get_int("gc.autopacklimit", &gc_auto_pack_limit);
+ git_config_get_bool("gc.autodetach", &detach_auto);
+ git_config_date_string("gc.pruneexpire", &prune_expire);
+ git_config_date_string("gc.worktreepruneexpire", &prune_worktrees_expire);
+ git_config(git_default_config, NULL);
}
static int too_many_loose_objects(void)
@@ -205,20 +226,22 @@ static const char *lock_repo_for_gc(int force, pid_t* ret_pid)
uintmax_t pid;
FILE *fp;
int fd;
+ char *pidfile_path;
- if (pidfile)
+ if (is_tempfile_active(&pidfile))
/* already locked */
return NULL;
if (gethostname(my_host, sizeof(my_host)))
- strcpy(my_host, "unknown");
+ xsnprintf(my_host, sizeof(my_host), "unknown");
- fd = hold_lock_file_for_update(&lock, git_path("gc.pid"),
+ pidfile_path = git_pathdup("gc.pid");
+ fd = hold_lock_file_for_update(&lock, pidfile_path,
LOCK_DIE_ON_ERROR);
if (!force) {
static char locking_host[128];
int should_exit;
- fp = fopen(git_path("gc.pid"), "r");
+ fp = fopen(pidfile_path, "r");
memset(locking_host, 0, sizeof(locking_host));
should_exit =
fp != NULL &&
@@ -233,7 +256,7 @@ static const char *lock_repo_for_gc(int force, pid_t* ret_pid)
* running.
*/
time(NULL) - st.st_mtime <= 12 * 3600 &&
- fscanf(fp, "%"PRIuMAX" %127c", &pid, locking_host) == 2 &&
+ fscanf(fp, "%"SCNuMAX" %127c", &pid, locking_host) == 2 &&
/* be gentle to concurrent "gc" on remote hosts */
(strcmp(locking_host, my_host) || !kill(pid, 0) || errno == EPERM);
if (fp != NULL)
@@ -242,6 +265,7 @@ static const char *lock_repo_for_gc(int force, pid_t* ret_pid)
if (fd >= 0)
rollback_lock_file(&lock);
*ret_pid = pid;
+ free(pidfile_path);
return locking_host;
}
}
@@ -251,14 +275,29 @@ static const char *lock_repo_for_gc(int force, pid_t* ret_pid)
write_in_full(fd, sb.buf, sb.len);
strbuf_release(&sb);
commit_lock_file(&lock);
-
- pidfile = git_pathdup("gc.pid");
- sigchain_push_common(remove_pidfile_on_signal);
- atexit(remove_pidfile);
-
+ register_tempfile(&pidfile, pidfile_path);
+ free(pidfile_path);
return NULL;
}
+static int report_last_gc_error(void)
+{
+ struct strbuf sb = STRBUF_INIT;
+ int ret;
+
+ ret = strbuf_read_file(&sb, git_path("gc.log"), 0);
+ if (ret > 0)
+ return error(_("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"),
+ git_path("gc.log"), sb.buf);
+ strbuf_release(&sb);
+ return 0;
+}
+
static int gc_before_repack(void)
{
if (pack_refs && run_command_v_opt(pack_refs_cmd.argv, RUN_GIT_CMD))
@@ -280,6 +319,7 @@ int cmd_gc(int argc, const char **argv, const char *prefix)
int force = 0;
const char *name;
pid_t pid;
+ int daemonized = 0;
struct option builtin_gc_options[] = {
OPT__QUIET(&quiet, N_("suppress progress reporting")),
@@ -298,10 +338,11 @@ int cmd_gc(int argc, const char **argv, const char *prefix)
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, "prune", "--expire", NULL);
+ argv_array_pushl(&prune_worktrees, "worktree", "prune", "--expire", NULL);
argv_array_pushl(&rerere, "rerere", "gc", NULL);
- git_config(gc_config, NULL);
+ gc_config();
if (pack_refs < 0)
pack_refs = !is_bare_repository();
@@ -335,13 +376,16 @@ int cmd_gc(int argc, const char **argv, const char *prefix)
fprintf(stderr, _("See \"git help gc\" for manual housekeeping.\n"));
}
if (detach_auto) {
+ if (report_last_gc_error())
+ return -1;
+
if (gc_before_repack())
return -1;
/*
* failure to daemonize is ok, we'll continue
* in foreground
*/
- daemonize();
+ daemonized = !daemonize();
}
} else
add_repack_all_option();
@@ -354,23 +398,45 @@ int cmd_gc(int argc, const char **argv, const char *prefix)
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);
+ }
+
if (gc_before_repack())
return -1;
- if (run_command_v_opt(repack.argv, RUN_GIT_CMD))
- return error(FAILED_RUN, repack.argv[0]);
+ if (!repository_format_precious_objects) {
+ if (run_command_v_opt(repack.argv, RUN_GIT_CMD))
+ return error(FAILED_RUN, repack.argv[0]);
- if (prune_expire) {
- argv_array_push(&prune, prune_expire);
- if (quiet)
- argv_array_push(&prune, "--no-progress");
- if (run_command_v_opt(prune.argv, RUN_GIT_CMD))
- return error(FAILED_RUN, prune.argv[0]);
+ if (prune_expire) {
+ argv_array_push(&prune, prune_expire);
+ if (quiet)
+ argv_array_push(&prune, "--no-progress");
+ if (run_command_v_opt(prune.argv, RUN_GIT_CMD))
+ return error(FAILED_RUN, prune.argv[0]);
+ }
+ }
+
+ if (prune_worktrees_expire) {
+ argv_array_push(&prune_worktrees, prune_worktrees_expire);
+ if (run_command_v_opt(prune_worktrees.argv, RUN_GIT_CMD))
+ return error(FAILED_RUN, prune_worktrees.argv[0]);
}
if (run_command_v_opt(rerere.argv, RUN_GIT_CMD))
return error(FAILED_RUN, rerere.argv[0]);
+ report_garbage = report_pack_garbage;
+ reprepare_packed_git();
+ if (pack_garbage.nr > 0)
+ clean_pack_garbage();
+
if (auto_gc && too_many_loose_objects())
warning(_("There are too many unreachable loose objects; "
"run 'git prune' to remove them."));