implement fetching of moved submodules
[gitweb.git] / builtin / pack-objects.c
index c7af4754857f373df37d2f15dcd6c4e4384ec570..5ee2c48ffb82e4adde3fe25b4661f3624314f238 100644 (file)
@@ -1,5 +1,6 @@
 #include "builtin.h"
 #include "cache.h"
+#include "config.h"
 #include "attr.h"
 #include "object.h"
 #include "blob.h"
@@ -24,6 +25,7 @@
 #include "sha1-array.h"
 #include "argv-array.h"
 #include "mru.h"
+#include "packfile.h"
 
 static const char *pack_usage[] = {
        N_("git pack-objects --stdout [<options>...] [< <ref-list> | < <object-list>]"),
@@ -44,7 +46,7 @@ static uint32_t nr_result, nr_written;
 static int non_empty;
 static int reuse_delta = 1, reuse_object = 1;
 static int keep_unreachable, unpack_unreachable, include_tag;
-static unsigned long unpack_unreachable_expiration;
+static timestamp_t unpack_unreachable_expiration;
 static int pack_loose_unreachable;
 static int local;
 static int have_non_local_packs;
@@ -106,12 +108,14 @@ static void *get_delta(struct object_entry *entry)
        void *buf, *base_buf, *delta_buf;
        enum object_type type;
 
-       buf = read_sha1_file(entry->idx.sha1, &type, &size);
+       buf = read_sha1_file(entry->idx.oid.hash, &type, &size);
        if (!buf)
-               die("unable to read %s", sha1_to_hex(entry->idx.sha1));
-       base_buf = read_sha1_file(entry->delta->idx.sha1, &type, &base_size);
+               die("unable to read %s", oid_to_hex(&entry->idx.oid));
+       base_buf = read_sha1_file(entry->delta->idx.oid.hash, &type,
+                                 &base_size);
        if (!base_buf)
-               die("unable to read %s", sha1_to_hex(entry->delta->idx.sha1));
+               die("unable to read %s",
+                   oid_to_hex(&entry->delta->idx.oid));
        delta_buf = diff_delta(base_buf, base_size,
                               buf, size, &delta_size, 0);
        if (!delta_buf || delta_size != entry->delta_size)
@@ -239,7 +243,8 @@ static unsigned long write_no_reuse_object(struct sha1file *f, struct object_ent
                                           unsigned long limit, int usable_delta)
 {
        unsigned long size, datalen;
-       unsigned char header[10], dheader[10];
+       unsigned char header[MAX_PACK_OBJECT_HEADER],
+                     dheader[MAX_PACK_OBJECT_HEADER];
        unsigned hdrlen;
        enum object_type type;
        void *buf;
@@ -248,19 +253,20 @@ static unsigned long write_no_reuse_object(struct sha1file *f, struct object_ent
        if (!usable_delta) {
                if (entry->type == OBJ_BLOB &&
                    entry->size > big_file_threshold &&
-                   (st = open_istream(entry->idx.sha1, &type, &size, NULL)) != NULL)
+                   (st = open_istream(entry->idx.oid.hash, &type, &size, NULL)) != NULL)
                        buf = NULL;
                else {
-                       buf = read_sha1_file(entry->idx.sha1, &type, &size);
+                       buf = read_sha1_file(entry->idx.oid.hash, &type,
+                                            &size);
                        if (!buf)
-                               die(_("unable to read %s"), sha1_to_hex(entry->idx.sha1));
+                               die(_("unable to read %s"),
+                                   oid_to_hex(&entry->idx.oid));
                }
                /*
                 * make sure no cached delta data remains from a
                 * previous attempt before a pack split occurred.
                 */
-               free(entry->delta_data);
-               entry->delta_data = NULL;
+               FREE_AND_NULL(entry->delta_data);
                entry->z_delta_size = 0;
        } else if (entry->delta_data) {
                size = entry->delta_size;
@@ -286,7 +292,8 @@ static unsigned long write_no_reuse_object(struct sha1file *f, struct object_ent
         * The object header is a byte of 'type' followed by zero or
         * more bytes of length.
         */
-       hdrlen = encode_in_pack_object_header(type, size, header);
+       hdrlen = encode_in_pack_object_header(header, sizeof(header),
+                                             type, size);
 
        if (type == OBJ_OFS_DELTA) {
                /*
@@ -320,7 +327,7 @@ static unsigned long write_no_reuse_object(struct sha1file *f, struct object_ent
                        return 0;
                }
                sha1write(f, header, hdrlen);
-               sha1write(f, entry->delta->idx.sha1, 20);
+               sha1write(f, entry->delta->idx.oid.hash, 20);
                hdrlen += 20;
        } else {
                if (limit && hdrlen + datalen + 20 >= limit) {
@@ -332,7 +339,7 @@ static unsigned long write_no_reuse_object(struct sha1file *f, struct object_ent
                sha1write(f, header, hdrlen);
        }
        if (st) {
-               datalen = write_large_blob_data(st, f, entry->idx.sha1);
+               datalen = write_large_blob_data(st, f, entry->idx.oid.hash);
                close_istream(st);
        } else {
                sha1write(f, buf, datalen);
@@ -352,20 +359,23 @@ static off_t write_reuse_object(struct sha1file *f, struct object_entry *entry,
        off_t offset;
        enum object_type type = entry->type;
        off_t datalen;
-       unsigned char header[10], dheader[10];
+       unsigned char header[MAX_PACK_OBJECT_HEADER],
+                     dheader[MAX_PACK_OBJECT_HEADER];
        unsigned hdrlen;
 
        if (entry->delta)
                type = (allow_ofs_delta && entry->delta->idx.offset) ?
                        OBJ_OFS_DELTA : OBJ_REF_DELTA;
-       hdrlen = encode_in_pack_object_header(type, entry->size, header);
+       hdrlen = encode_in_pack_object_header(header, sizeof(header),
+                                             type, entry->size);
 
        offset = entry->in_pack_offset;
        revidx = find_pack_revindex(p, offset);
        datalen = revidx[1].offset - offset;
        if (!pack_to_stdout && p->index_version > 1 &&
            check_pack_crc(p, &w_curs, offset, datalen, revidx->nr)) {
-               error("bad packed object CRC for %s", sha1_to_hex(entry->idx.sha1));
+               error("bad packed object CRC for %s",
+                     oid_to_hex(&entry->idx.oid));
                unuse_pack(&w_curs);
                return write_no_reuse_object(f, entry, limit, usable_delta);
        }
@@ -375,7 +385,8 @@ static off_t write_reuse_object(struct sha1file *f, struct object_entry *entry,
 
        if (!pack_to_stdout && p->index_version == 1 &&
            check_pack_inflate(p, &w_curs, offset, datalen, entry->size)) {
-               error("corrupt packed object for %s", sha1_to_hex(entry->idx.sha1));
+               error("corrupt packed object for %s",
+                     oid_to_hex(&entry->idx.oid));
                unuse_pack(&w_curs);
                return write_no_reuse_object(f, entry, limit, usable_delta);
        }
@@ -400,7 +411,7 @@ static off_t write_reuse_object(struct sha1file *f, struct object_entry *entry,
                        return 0;
                }
                sha1write(f, header, hdrlen);
-               sha1write(f, entry->delta->idx.sha1, 20);
+               sha1write(f, entry->delta->idx.oid.hash, 20);
                hdrlen += 20;
                reused_delta++;
        } else {
@@ -505,7 +516,7 @@ static enum write_one_status write_one(struct sha1file *f,
        recursing = (e->idx.offset == 1);
        if (recursing) {
                warning("recursive delta detected for object %s",
-                       sha1_to_hex(e->idx.sha1));
+                       oid_to_hex(&e->idx.oid));
                return WRITE_ONE_RECURSIVE;
        } else if (e->idx.offset || e->preferred_base) {
                /* offset is non zero if object is written already. */
@@ -894,24 +905,15 @@ static void write_pack_file(void)
                        written, nr_result);
 }
 
-static void setup_delta_attr_check(struct git_attr_check *check)
-{
-       static struct git_attr *attr_delta;
-
-       if (!attr_delta)
-               attr_delta = git_attr("delta");
-
-       check[0].attr = attr_delta;
-}
-
 static int no_try_delta(const char *path)
 {
-       struct git_attr_check check[1];
+       static struct attr_check *check;
 
-       setup_delta_attr_check(check);
-       if (git_check_attr(path, ARRAY_SIZE(check), check))
+       if (!check)
+               check = attr_check_initl("delta", NULL);
+       if (git_check_attr(path, check))
                return 0;
-       if (ATTR_FALSE(check->value))
+       if (ATTR_FALSE(check->items[0].value))
                return 1;
        return 0;
 }
@@ -1010,7 +1012,7 @@ static int want_object_in_pack(const unsigned char *sha1,
                        return want;
        }
 
-       for (entry = packed_git_mru->head; entry; entry = entry->next) {
+       for (entry = packed_git_mru.head; entry; entry = entry->next) {
                struct packed_git *p = entry->item;
                off_t offset;
 
@@ -1028,7 +1030,7 @@ static int want_object_in_pack(const unsigned char *sha1,
                        }
                        want = want_found_object(exclude, p);
                        if (!exclude && want > 0)
-                               mru_mark(packed_git_mru, entry);
+                               mru_mark(&packed_git_mru, entry);
                        if (want != -1)
                                return want;
                }
@@ -1288,7 +1290,7 @@ static int done_pbase_path_pos(unsigned hash)
 
 static int check_pbase_path(unsigned hash)
 {
-       int pos = (!done_pbase_paths) ? -1 : done_pbase_path_pos(hash);
+       int pos = done_pbase_path_pos(hash);
        if (0 <= pos)
                return 1;
        pos = -pos - 1;
@@ -1297,9 +1299,8 @@ static int check_pbase_path(unsigned hash)
                   done_pbase_paths_alloc);
        done_pbase_paths_num++;
        if (pos < done_pbase_paths_num)
-               memmove(done_pbase_paths + pos + 1,
-                       done_pbase_paths + pos,
-                       (done_pbase_paths_num - pos - 1) * sizeof(unsigned));
+               MOVE_ARRAY(done_pbase_paths + pos + 1, done_pbase_paths + pos,
+                          done_pbase_paths_num - pos - 1);
        done_pbase_paths[pos] = hash;
        return 0;
 }
@@ -1374,12 +1375,10 @@ static void cleanup_preferred_base(void)
                if (!pbase_tree_cache[i])
                        continue;
                free(pbase_tree_cache[i]->tree_data);
-               free(pbase_tree_cache[i]);
-               pbase_tree_cache[i] = NULL;
+               FREE_AND_NULL(pbase_tree_cache[i]);
        }
 
-       free(done_pbase_paths);
-       done_pbase_paths = NULL;
+       FREE_AND_NULL(done_pbase_paths);
        done_pbase_paths_num = done_pbase_paths_alloc = 0;
 }
 
@@ -1437,7 +1436,7 @@ static void check_object(struct object_entry *entry)
                                ofs += 1;
                                if (!ofs || MSB(ofs, 7)) {
                                        error("delta base offset overflow in pack for %s",
-                                             sha1_to_hex(entry->idx.sha1));
+                                             oid_to_hex(&entry->idx.oid));
                                        goto give_up;
                                }
                                c = buf[used_0++];
@@ -1446,7 +1445,7 @@ static void check_object(struct object_entry *entry)
                        ofs = entry->in_pack_offset - ofs;
                        if (ofs <= 0 || ofs >= entry->in_pack_offset) {
                                error("delta base offset out of bound for %s",
-                                     sha1_to_hex(entry->idx.sha1));
+                                     oid_to_hex(&entry->idx.oid));
                                goto give_up;
                        }
                        if (reuse_delta && !entry->preferred_base) {
@@ -1503,7 +1502,7 @@ static void check_object(struct object_entry *entry)
                unuse_pack(&w_curs);
        }
 
-       entry->type = sha1_object_info(entry->idx.sha1, &entry->size);
+       entry->type = sha1_object_info(entry->idx.oid.hash, &entry->size);
        /*
         * The error condition is checked in prepare_pack().  This is
         * to permit a missing preferred base object to be ignored
@@ -1519,7 +1518,7 @@ static int pack_offset_sort(const void *_a, const void *_b)
 
        /* avoid filesystem trashing with loose objects */
        if (!a->in_pack && !b->in_pack)
-               return hashcmp(a->idx.sha1, b->idx.sha1);
+               return oidcmp(&a->idx.oid, &b->idx.oid);
 
        if (a->in_pack < b->in_pack)
                return -1;
@@ -1565,7 +1564,8 @@ static void drop_reused_delta(struct object_entry *entry)
                 * And if that fails, the error will be recorded in entry->type
                 * and dealt with in prepare_pack().
                 */
-               entry->type = sha1_object_info(entry->idx.sha1, &entry->size);
+               entry->type = sha1_object_info(entry->idx.oid.hash,
+                                              &entry->size);
        }
 }
 
@@ -1857,26 +1857,29 @@ static int try_delta(struct unpacked *trg, struct unpacked *src,
        /* Load data if not already done */
        if (!trg->data) {
                read_lock();
-               trg->data = read_sha1_file(trg_entry->idx.sha1, &type, &sz);
+               trg->data = read_sha1_file(trg_entry->idx.oid.hash, &type,
+                                          &sz);
                read_unlock();
                if (!trg->data)
                        die("object %s cannot be read",
-                           sha1_to_hex(trg_entry->idx.sha1));
+                           oid_to_hex(&trg_entry->idx.oid));
                if (sz != trg_size)
                        die("object %s inconsistent object length (%lu vs %lu)",
-                           sha1_to_hex(trg_entry->idx.sha1), sz, trg_size);
+                           oid_to_hex(&trg_entry->idx.oid), sz,
+                           trg_size);
                *mem_usage += sz;
        }
        if (!src->data) {
                read_lock();
-               src->data = read_sha1_file(src_entry->idx.sha1, &type, &sz);
+               src->data = read_sha1_file(src_entry->idx.oid.hash, &type,
+                                          &sz);
                read_unlock();
                if (!src->data) {
                        if (src_entry->preferred_base) {
                                static int warned = 0;
                                if (!warned++)
                                        warning("object %s cannot be read",
-                                               sha1_to_hex(src_entry->idx.sha1));
+                                               oid_to_hex(&src_entry->idx.oid));
                                /*
                                 * Those objects are not included in the
                                 * resulting pack.  Be resilient and ignore
@@ -1886,11 +1889,12 @@ static int try_delta(struct unpacked *trg, struct unpacked *src,
                                return 0;
                        }
                        die("object %s cannot be read",
-                           sha1_to_hex(src_entry->idx.sha1));
+                           oid_to_hex(&src_entry->idx.oid));
                }
                if (sz != src_size)
                        die("object %s inconsistent object length (%lu vs %lu)",
-                           sha1_to_hex(src_entry->idx.sha1), sz, src_size);
+                           oid_to_hex(&src_entry->idx.oid), sz,
+                           src_size);
                *mem_usage += sz;
        }
        if (!src->index) {
@@ -1964,8 +1968,7 @@ static unsigned long free_unpacked(struct unpacked *n)
        n->index = NULL;
        if (n->data) {
                freed_mem += n->entry->size;
-               free(n->data);
-               n->data = NULL;
+               FREE_AND_NULL(n->data);
        }
        n->entry = NULL;
        n->depth = 0;
@@ -2168,7 +2171,10 @@ static void *threaded_find_deltas(void *arg)
 {
        struct thread_params *me = arg;
 
+       progress_lock();
        while (me->remaining) {
+               progress_unlock();
+
                find_deltas(me->list, &me->remaining,
                            me->window, me->depth, me->processed);
 
@@ -2190,7 +2196,10 @@ static void *threaded_find_deltas(void *arg)
                        pthread_cond_wait(&me->cond, &me->mutex);
                me->data_ready = 0;
                pthread_mutex_unlock(&me->mutex);
+
+               progress_lock();
        }
+       progress_unlock();
        /* leave ->working 1 so that this doesn't get more work assigned */
        return NULL;
 }
@@ -2342,7 +2351,7 @@ static void add_tag_chain(const struct object_id *oid)
        if (packlist_find(&to_pack, oid->hash, NULL))
                return;
 
-       tag = lookup_tag(oid->hash);
+       tag = lookup_tag(oid);
        while (1) {
                if (!tag || parse_tag(tag) || !tag->tagged)
                        die("unable to pack objects reachable from tag %s",
@@ -2411,7 +2420,7 @@ static void prepare_pack(int window, int depth)
                        nr_deltas++;
                        if (entry->type < 0)
                                die("unable to get type of object %s",
-                                   sha1_to_hex(entry->idx.sha1));
+                                   oid_to_hex(&entry->idx.oid));
                } else {
                        if (entry->type < 0) {
                                /*
@@ -2477,8 +2486,10 @@ static int git_pack_config(const char *k, const char *v, void *cb)
                        die("invalid number of threads specified (%d)",
                            delta_search_threads);
 #ifdef NO_PTHREADS
-               if (delta_search_threads != 1)
+               if (delta_search_threads != 1) {
                        warning("no threads support, ignoring %s", k);
+                       delta_search_threads = 0;
+               }
 #endif
                return 0;
        }
@@ -2552,8 +2563,8 @@ struct in_pack_object {
 };
 
 struct in_pack {
-       int alloc;
-       int nr;
+       unsigned int alloc;
+       unsigned int nr;
        struct in_pack_object *array;
 };
 
@@ -2621,17 +2632,17 @@ static void add_objects_in_unpacked_packs(struct rev_info *revs)
        free(in_pack.array);
 }
 
-static int add_loose_object(const unsigned char *sha1, const char *path,
+static int add_loose_object(const struct object_id *oid, const char *path,
                            void *data)
 {
-       enum object_type type = sha1_object_info(sha1, NULL);
+       enum object_type type = sha1_object_info(oid->hash, NULL);
 
        if (type < 0) {
                warning("loose object at %s could not be examined", path);
                return 0;
        }
 
-       add_object_entry(sha1, type, "", 0);
+       add_object_entry(oid->hash, type, "", 0);
        return 0;
 }
 
@@ -2677,16 +2688,16 @@ static int has_sha1_pack_kept_or_nonlocal(const unsigned char *sha1)
  *
  * This is filled by get_object_list.
  */
-static struct sha1_array recent_objects;
+static struct oid_array recent_objects;
 
-static int loosened_object_can_be_discarded(const unsigned char *sha1,
-                                           unsigned long mtime)
+static int loosened_object_can_be_discarded(const struct object_id *oid,
+                                           timestamp_t mtime)
 {
        if (!unpack_unreachable_expiration)
                return 0;
        if (mtime > unpack_unreachable_expiration)
                return 0;
-       if (sha1_array_lookup(&recent_objects, sha1) >= 0)
+       if (oid_array_lookup(&recent_objects, oid) >= 0)
                return 0;
        return 1;
 }
@@ -2695,7 +2706,7 @@ static void loosen_unused_packed_objects(struct rev_info *revs)
 {
        struct packed_git *p;
        uint32_t i;
-       const unsigned char *sha1;
+       struct object_id oid;
 
        for (p = packed_git; p; p = p->next) {
                if (!p->pack_local || p->pack_keep)
@@ -2705,11 +2716,11 @@ static void loosen_unused_packed_objects(struct rev_info *revs)
                        die("cannot open pack index");
 
                for (i = 0; i < p->num_objects; i++) {
-                       sha1 = nth_packed_object_sha1(p, i);
-                       if (!packlist_find(&to_pack, sha1, NULL) &&
-                           !has_sha1_pack_kept_or_nonlocal(sha1) &&
-                           !loosened_object_can_be_discarded(sha1, p->mtime))
-                               if (force_object_loose(sha1, p->mtime))
+                       nth_packed_object_oid(&oid, p, i);
+                       if (!packlist_find(&to_pack, oid.hash, NULL) &&
+                           !has_sha1_pack_kept_or_nonlocal(oid.hash) &&
+                           !loosened_object_can_be_discarded(&oid, p->mtime))
+                               if (force_object_loose(oid.hash, p->mtime))
                                        die("unable to force loose object");
                }
        }
@@ -2722,7 +2733,11 @@ static void loosen_unused_packed_objects(struct rev_info *revs)
  */
 static int pack_options_allow_reuse(void)
 {
-       return pack_to_stdout && allow_ofs_delta;
+       return pack_to_stdout &&
+              allow_ofs_delta &&
+              !ignore_packed_keep &&
+              (!local || !have_non_local_packs) &&
+              !incremental;
 }
 
 static int get_object_list_from_bitmap(struct rev_info *revs)
@@ -2748,12 +2763,12 @@ static void record_recent_object(struct object *obj,
                                 const char *name,
                                 void *data)
 {
-       sha1_array_append(&recent_objects, obj->oid.hash);
+       oid_array_append(&recent_objects, &obj->oid);
 }
 
 static void record_recent_commit(struct commit *commit, void *data)
 {
-       sha1_array_append(&recent_objects, commit->object.oid.hash);
+       oid_array_append(&recent_objects, &commit->object.oid);
 }
 
 static void get_object_list(int ac, const char **av)
@@ -2782,10 +2797,10 @@ static void get_object_list(int ac, const char **av)
                                continue;
                        }
                        if (starts_with(line, "--shallow ")) {
-                               unsigned char sha1[20];
-                               if (get_sha1_hex(line + 10, sha1))
+                               struct object_id oid;
+                               if (get_oid_hex(line + 10, &oid))
                                        die("not an SHA-1 '%s'", line + 10);
-                               register_shallow(sha1);
+                               register_shallow(&oid);
                                use_bitmap_index = 0;
                                continue;
                        }
@@ -2821,7 +2836,7 @@ static void get_object_list(int ac, const char **av)
        if (unpack_unreachable)
                loosen_unused_packed_objects(&revs);
 
-       sha1_array_clear(&recent_objects);
+       oid_array_clear(&recent_objects);
 }
 
 static int option_parse_index_version(const struct option *opt,