#define GRAPH_CHUNKID_OIDFANOUT 0x4f494446 /* "OIDF" */
#define GRAPH_CHUNKID_OIDLOOKUP 0x4f49444c /* "OIDL" */
#define GRAPH_CHUNKID_DATA 0x43444154 /* "CDAT" */
-#define GRAPH_CHUNKID_LARGEEDGES 0x45444745 /* "EDGE" */
+#define GRAPH_CHUNKID_EXTRAEDGES 0x45444745 /* "EDGE" */
#define GRAPH_DATA_WIDTH (the_hash_algo->rawsz + 16)
#define GRAPH_VERSION_1 0x1
#define GRAPH_VERSION GRAPH_VERSION_1
-#define GRAPH_OCTOPUS_EDGES_NEEDED 0x80000000
+#define GRAPH_EXTRA_EDGES_NEEDED 0x80000000
#define GRAPH_EDGE_LAST_MASK 0x7fffffff
#define GRAPH_PARENT_NONE 0x70000000
return 1;
}
-struct commit_graph *load_commit_graph_one(const char *graph_file)
+int open_commit_graph(const char *graph_file, int *fd, struct stat *st)
+{
+ *fd = git_open(graph_file);
+ if (*fd < 0)
+ return 0;
+ if (fstat(*fd, st)) {
+ close(*fd);
+ return 0;
+ }
+ return 1;
+}
+
+struct commit_graph *load_commit_graph_one_fd_st(int fd, struct stat *st)
{
void *graph_map;
size_t graph_size;
- struct stat st;
struct commit_graph *ret;
- int fd = git_open(graph_file);
- if (fd < 0)
- return NULL;
- if (fstat(fd, &st)) {
- close(fd);
- return NULL;
- }
- graph_size = xsize_t(st.st_size);
+ graph_size = xsize_t(st->st_size);
if (graph_size < GRAPH_MIN_SIZE) {
close(fd);
- die(_("graph file %s is too small"), graph_file);
+ error(_("commit-graph file is too small"));
+ return NULL;
}
graph_map = xmmap(NULL, graph_size, PROT_READ, MAP_PRIVATE, fd, 0);
ret = parse_commit_graph(graph_map, fd, graph_size);
if (!ret) {
munmap(graph_map, graph_size);
close(fd);
- exit(1);
}
return ret;
}
+static int verify_commit_graph_lite(struct commit_graph *g)
+{
+ /*
+ * Basic validation shared between parse_commit_graph()
+ * which'll be called every time the graph is used, and the
+ * much more expensive verify_commit_graph() used by
+ * "commit-graph verify".
+ *
+ * There should only be very basic checks here to ensure that
+ * we don't e.g. segfault in fill_commit_in_graph(), but
+ * because this is a very hot codepath nothing that e.g. loops
+ * over g->num_commits, or runs a checksum on the commit-graph
+ * itself.
+ */
+ if (!g->chunk_oid_fanout) {
+ error("commit-graph is missing the OID Fanout chunk");
+ return 1;
+ }
+ if (!g->chunk_oid_lookup) {
+ error("commit-graph is missing the OID Lookup chunk");
+ return 1;
+ }
+ if (!g->chunk_commit_data) {
+ error("commit-graph is missing the Commit Data chunk");
+ return 1;
+ }
+
+ return 0;
+}
+
struct commit_graph *parse_commit_graph(void *graph_map, int fd,
size_t graph_size)
{
graph_signature = get_be32(data);
if (graph_signature != GRAPH_SIGNATURE) {
- error(_("graph signature %X does not match signature %X"),
+ error(_("commit-graph signature %X does not match signature %X"),
graph_signature, GRAPH_SIGNATURE);
return NULL;
}
graph_version = *(unsigned char*)(data + 4);
if (graph_version != GRAPH_VERSION) {
- error(_("graph version %X does not match version %X"),
+ error(_("commit-graph version %X does not match version %X"),
graph_version, GRAPH_VERSION);
return NULL;
}
hash_version = *(unsigned char*)(data + 5);
if (hash_version != oid_version()) {
- error(_("hash version %X does not match version %X"),
+ error(_("commit-graph hash version %X does not match version %X"),
hash_version, oid_version());
return NULL;
}
if (data + graph_size - chunk_lookup <
GRAPH_CHUNKLOOKUP_WIDTH) {
- error(_("chunk lookup table entry missing; graph file may be incomplete"));
+ error(_("commit-graph chunk lookup table entry missing; file may be incomplete"));
free(graph);
return NULL;
}
chunk_lookup += GRAPH_CHUNKLOOKUP_WIDTH;
if (chunk_offset > graph_size - the_hash_algo->rawsz) {
- error(_("improper chunk offset %08x%08x"), (uint32_t)(chunk_offset >> 32),
+ error(_("commit-graph improper chunk offset %08x%08x"), (uint32_t)(chunk_offset >> 32),
(uint32_t)chunk_offset);
free(graph);
return NULL;
graph->chunk_commit_data = data + chunk_offset;
break;
- case GRAPH_CHUNKID_LARGEEDGES:
- if (graph->chunk_large_edges)
+ case GRAPH_CHUNKID_EXTRAEDGES:
+ if (graph->chunk_extra_edges)
chunk_repeated = 1;
else
- graph->chunk_large_edges = data + chunk_offset;
+ graph->chunk_extra_edges = data + chunk_offset;
break;
}
if (chunk_repeated) {
- error(_("chunk id %08x appears multiple times"), chunk_id);
+ error(_("commit-graph chunk id %08x appears multiple times"), chunk_id);
free(graph);
return NULL;
}
last_chunk_offset = chunk_offset;
}
+ if (verify_commit_graph_lite(graph)) {
+ free(graph);
+ return NULL;
+ }
+
return graph;
}
+static struct commit_graph *load_commit_graph_one(const char *graph_file)
+{
+
+ struct stat st;
+ int fd;
+ int open_ok = open_commit_graph(graph_file, &fd, &st);
+
+ if (!open_ok)
+ return NULL;
+
+ return load_commit_graph_one_fd_st(fd, &st);
+}
+
static void prepare_commit_graph_one(struct repository *r, const char *obj_dir)
{
char *graph_name;
struct object_directory *odb;
int config_value;
+ if (git_env_bool(GIT_TEST_COMMIT_GRAPH_DIE_ON_LOAD, 0))
+ die("dying as requested by the '%s' variable on commit-graph load!",
+ GIT_TEST_COMMIT_GRAPH_DIE_ON_LOAD);
+
if (r->objects->commit_graph_attempted)
return !!r->objects->commit_graph;
r->objects->commit_graph_attempted = 1;
item->generation = get_be32(commit_data + g->hash_len + 8) >> 2;
}
+static inline void set_commit_tree(struct commit *c, struct tree *t)
+{
+ c->maybe_tree = t;
+}
+
static int fill_commit_in_graph(struct repository *r,
struct commit *item,
struct commit_graph *g, uint32_t pos)
item->object.parsed = 1;
item->graph_pos = pos;
- item->maybe_tree = NULL;
+ set_commit_tree(item, NULL);
date_high = get_be32(commit_data + g->hash_len + 8) & 0x3;
date_low = get_be32(commit_data + g->hash_len + 12);
edge_value = get_be32(commit_data + g->hash_len + 4);
if (edge_value == GRAPH_PARENT_NONE)
return 1;
- if (!(edge_value & GRAPH_OCTOPUS_EDGES_NEEDED)) {
+ if (!(edge_value & GRAPH_EXTRA_EDGES_NEEDED)) {
pptr = insert_parent_or_die(r, g, edge_value, pptr);
return 1;
}
- parent_data_ptr = (uint32_t*)(g->chunk_large_edges +
+ parent_data_ptr = (uint32_t*)(g->chunk_extra_edges +
4 * (uint64_t)(edge_value & GRAPH_EDGE_LAST_MASK));
do {
edge_value = get_be32(parent_data_ptr);
GRAPH_DATA_WIDTH * (c->graph_pos);
hashcpy(oid.hash, commit_data);
- c->maybe_tree = lookup_tree(r, &oid);
+ set_commit_tree(c, lookup_tree(r, &oid));
return c->maybe_tree;
}
static void write_graph_chunk_fanout(struct hashfile *f,
struct commit **commits,
- int nr_commits)
+ int nr_commits,
+ struct progress *progress,
+ uint64_t *progress_cnt)
{
int i, count = 0;
struct commit **list = commits;
while (count < nr_commits) {
if ((*list)->object.oid.hash[0] != i)
break;
+ display_progress(progress, ++*progress_cnt);
count++;
list++;
}
}
static void write_graph_chunk_oids(struct hashfile *f, int hash_len,
- struct commit **commits, int nr_commits)
+ struct commit **commits, int nr_commits,
+ struct progress *progress,
+ uint64_t *progress_cnt)
{
struct commit **list = commits;
int count;
- for (count = 0; count < nr_commits; count++, list++)
+ for (count = 0; count < nr_commits; count++, list++) {
+ display_progress(progress, ++*progress_cnt);
hashwrite(f, (*list)->object.oid.hash, (int)hash_len);
+ }
}
static const unsigned char *commit_to_sha1(size_t index, void *table)
}
static void write_graph_chunk_data(struct hashfile *f, int hash_len,
- struct commit **commits, int nr_commits)
+ struct commit **commits, int nr_commits,
+ struct progress *progress,
+ uint64_t *progress_cnt)
{
struct commit **list = commits;
struct commit **last = commits + nr_commits;
struct commit_list *parent;
int edge_value;
uint32_t packedDate[2];
+ display_progress(progress, ++*progress_cnt);
- parse_commit(*list);
+ parse_commit_no_graph(*list);
hashwrite(f, get_commit_tree_oid(*list)->hash, hash_len);
parent = (*list)->parents;
if (!parent)
edge_value = GRAPH_PARENT_NONE;
else if (parent->next)
- edge_value = GRAPH_OCTOPUS_EDGES_NEEDED | num_extra_edges;
+ edge_value = GRAPH_EXTRA_EDGES_NEEDED | num_extra_edges;
else {
edge_value = sha1_pos(parent->item->object.oid.hash,
commits,
hashwrite_be32(f, edge_value);
- if (edge_value & GRAPH_OCTOPUS_EDGES_NEEDED) {
+ if (edge_value & GRAPH_EXTRA_EDGES_NEEDED) {
do {
num_extra_edges++;
parent = parent->next;
}
}
-static void write_graph_chunk_large_edges(struct hashfile *f,
+static void write_graph_chunk_extra_edges(struct hashfile *f,
struct commit **commits,
- int nr_commits)
+ int nr_commits,
+ struct progress *progress,
+ uint64_t *progress_cnt)
{
struct commit **list = commits;
struct commit **last = commits + nr_commits;
while (list < last) {
int num_parents = 0;
+
+ display_progress(progress, ++*progress_cnt);
+
for (parent = (*list)->parents; num_parents < 3 && parent;
parent = parent->next)
num_parents++;
static void close_reachable(struct packed_oid_list *oids, int report_progress)
{
- int i, j;
+ int i;
struct commit *commit;
struct progress *progress = NULL;
if (report_progress)
progress = start_delayed_progress(
- _("Loading known commits in commit graph"), j = 0);
+ _("Loading known commits in commit graph"), oids->nr);
for (i = 0; i < oids->nr; i++) {
- display_progress(progress, ++j);
+ display_progress(progress, i + 1);
commit = lookup_commit(the_repository, &oids->list[i]);
if (commit)
commit->object.flags |= UNINTERESTING;
*/
if (report_progress)
progress = start_delayed_progress(
- _("Expanding reachable commits in commit graph"), j = 0);
+ _("Expanding reachable commits in commit graph"), oids->nr);
for (i = 0; i < oids->nr; i++) {
- display_progress(progress, ++j);
+ display_progress(progress, i + 1);
commit = lookup_commit(the_repository, &oids->list[i]);
- if (commit && !parse_commit(commit))
+ if (commit && !parse_commit_no_graph(commit))
add_missing_parents(oids, commit);
}
stop_progress(&progress);
if (report_progress)
progress = start_delayed_progress(
- _("Clearing commit marks in commit graph"), j = 0);
+ _("Clearing commit marks in commit graph"), oids->nr);
for (i = 0; i < oids->nr; i++) {
- display_progress(progress, ++j);
+ display_progress(progress, i + 1);
commit = lookup_commit(the_repository, &oids->list[i]);
if (commit)
struct commit_list *parent;
struct progress *progress = NULL;
const unsigned hashsz = the_hash_algo->rawsz;
+ uint64_t progress_cnt = 0;
+ struct strbuf progress_title = STRBUF_INIT;
+ unsigned long approx_nr_objects;
if (!commit_graph_compatible(the_repository))
return;
oids.nr = 0;
- oids.alloc = approximate_object_count() / 32;
+ approx_nr_objects = approximate_object_count();
+ oids.alloc = approx_nr_objects / 32;
oids.progress = NULL;
oids.progress_done = 0;
strbuf_addf(&packname, "%s/pack/", obj_dir);
dirlen = packname.len;
if (report_progress) {
- oids.progress = start_delayed_progress(
- _("Finding commits for commit graph"), 0);
+ strbuf_addf(&progress_title,
+ Q_("Finding commits for commit graph in %d pack",
+ "Finding commits for commit graph in %d packs",
+ pack_indexes->nr),
+ pack_indexes->nr);
+ oids.progress = start_delayed_progress(progress_title.buf, 0);
oids.progress_done = 0;
}
for (i = 0; i < pack_indexes->nr; i++) {
die(_("error adding pack %s"), packname.buf);
if (open_pack_index(p))
die(_("error opening index for %s"), packname.buf);
- for_each_object_in_pack(p, add_packed_commits, &oids, 0);
+ for_each_object_in_pack(p, add_packed_commits, &oids,
+ FOR_EACH_OBJECT_PACK_ORDER);
close_pack(p);
free(p);
}
stop_progress(&oids.progress);
+ strbuf_reset(&progress_title);
strbuf_release(&packname);
}
if (commit_hex) {
- if (report_progress)
- progress = start_delayed_progress(
- _("Finding commits for commit graph"),
- commit_hex->nr);
+ if (report_progress) {
+ strbuf_addf(&progress_title,
+ Q_("Finding commits for commit graph from %d ref",
+ "Finding commits for commit graph from %d refs",
+ commit_hex->nr),
+ commit_hex->nr);
+ progress = start_delayed_progress(progress_title.buf,
+ commit_hex->nr);
+ }
for (i = 0; i < commit_hex->nr; i++) {
const char *end;
struct object_id oid;
}
}
stop_progress(&progress);
+ strbuf_reset(&progress_title);
}
if (!pack_indexes && !commit_hex) {
if (report_progress)
oids.progress = start_delayed_progress(
- _("Finding commits for commit graph"), 0);
- for_each_packed_object(add_packed_commits, &oids, 0);
+ _("Finding commits for commit graph among packed objects"),
+ approx_nr_objects);
+ for_each_packed_object(add_packed_commits, &oids,
+ FOR_EACH_OBJECT_PACK_ORDER);
+ if (oids.progress_done < approx_nr_objects)
+ display_progress(oids.progress, approx_nr_objects);
stop_progress(&oids.progress);
}
close_reachable(&oids, report_progress);
+ if (report_progress)
+ progress = start_delayed_progress(
+ _("Counting distinct commits in commit graph"),
+ oids.nr);
+ display_progress(progress, 0); /* TODO: Measure QSORT() progress */
QSORT(oids.list, oids.nr, commit_compare);
-
count_distinct = 1;
for (i = 1; i < oids.nr; i++) {
+ display_progress(progress, i + 1);
if (!oideq(&oids.list[i - 1], &oids.list[i]))
count_distinct++;
}
+ stop_progress(&progress);
if (count_distinct >= GRAPH_EDGE_LAST_MASK)
die(_("the commit graph format cannot write %d commits"), count_distinct);
ALLOC_ARRAY(commits.list, commits.alloc);
num_extra_edges = 0;
+ if (report_progress)
+ progress = start_delayed_progress(
+ _("Finding extra edges in commit graph"),
+ oids.nr);
for (i = 0; i < oids.nr; i++) {
int num_parents = 0;
+ display_progress(progress, i + 1);
if (i > 0 && oideq(&oids.list[i - 1], &oids.list[i]))
continue;
commits.list[commits.nr] = lookup_commit(the_repository, &oids.list[i]);
- parse_commit(commits.list[commits.nr]);
+ parse_commit_no_graph(commits.list[commits.nr]);
for (parent = commits.list[commits.nr]->parents;
parent; parent = parent->next)
commits.nr++;
}
num_chunks = num_extra_edges ? 4 : 3;
+ stop_progress(&progress);
if (commits.nr >= GRAPH_EDGE_LAST_MASK)
die(_("too many commits to write graph"));
chunk_ids[1] = GRAPH_CHUNKID_OIDLOOKUP;
chunk_ids[2] = GRAPH_CHUNKID_DATA;
if (num_extra_edges)
- chunk_ids[3] = GRAPH_CHUNKID_LARGEEDGES;
+ chunk_ids[3] = GRAPH_CHUNKID_EXTRAEDGES;
else
chunk_ids[3] = 0;
chunk_ids[4] = 0;
hashwrite(f, chunk_write, 12);
}
- write_graph_chunk_fanout(f, commits.list, commits.nr);
- write_graph_chunk_oids(f, hashsz, commits.list, commits.nr);
- write_graph_chunk_data(f, hashsz, commits.list, commits.nr);
- write_graph_chunk_large_edges(f, commits.list, commits.nr);
+ if (report_progress) {
+ strbuf_addf(&progress_title,
+ Q_("Writing out commit graph in %d pass",
+ "Writing out commit graph in %d passes",
+ num_chunks),
+ num_chunks);
+ progress = start_delayed_progress(
+ progress_title.buf,
+ num_chunks * commits.nr);
+ }
+ write_graph_chunk_fanout(f, commits.list, commits.nr, progress, &progress_cnt);
+ write_graph_chunk_oids(f, hashsz, commits.list, commits.nr, progress, &progress_cnt);
+ write_graph_chunk_data(f, hashsz, commits.list, commits.nr, progress, &progress_cnt);
+ if (num_extra_edges)
+ write_graph_chunk_extra_edges(f, commits.list, commits.nr, progress, &progress_cnt);
+ stop_progress(&progress);
+ strbuf_release(&progress_title);
close_commit_graph(the_repository);
finalize_hashfile(f, NULL, CSUM_HASH_IN_STREAM | CSUM_FSYNC);
return 1;
}
- verify_commit_graph_error = 0;
-
- if (!g->chunk_oid_fanout)
- graph_report("commit-graph is missing the OID Fanout chunk");
- if (!g->chunk_oid_lookup)
- graph_report("commit-graph is missing the OID Lookup chunk");
- if (!g->chunk_commit_data)
- graph_report("commit-graph is missing the Commit Data chunk");
-
+ verify_commit_graph_error = verify_commit_graph_lite(g);
if (verify_commit_graph_error)
return verify_commit_graph_error;
hashcpy(cur_oid.hash, g->chunk_oid_lookup + g->hash_len * i);
if (i && oidcmp(&prev_oid, &cur_oid) >= 0)
- graph_report("commit-graph has incorrect OID order: %s then %s",
+ graph_report(_("commit-graph has incorrect OID order: %s then %s"),
oid_to_hex(&prev_oid),
oid_to_hex(&cur_oid));
uint32_t fanout_value = get_be32(g->chunk_oid_fanout + cur_fanout_pos);
if (i != fanout_value)
- graph_report("commit-graph has incorrect fanout value: fanout[%d] = %u != %u",
+ graph_report(_("commit-graph has incorrect fanout value: fanout[%d] = %u != %u"),
cur_fanout_pos, fanout_value, i);
cur_fanout_pos++;
}
graph_commit = lookup_commit(r, &cur_oid);
if (!parse_commit_in_graph_one(r, g, graph_commit))
- graph_report("failed to parse %s from commit-graph",
+ graph_report(_("failed to parse commit %s from commit-graph"),
oid_to_hex(&cur_oid));
}
uint32_t fanout_value = get_be32(g->chunk_oid_fanout + cur_fanout_pos);
if (g->num_commits != fanout_value)
- graph_report("commit-graph has incorrect fanout value: fanout[%d] = %u != %u",
+ graph_report(_("commit-graph has incorrect fanout value: fanout[%d] = %u != %u"),
cur_fanout_pos, fanout_value, i);
cur_fanout_pos++;
graph_commit = lookup_commit(r, &cur_oid);
odb_commit = (struct commit *)create_object(r, cur_oid.hash, alloc_commit_node(r));
if (parse_commit_internal(odb_commit, 0, 0)) {
- graph_report("failed to parse %s from object database",
+ graph_report(_("failed to parse commit %s from object database for commit-graph"),
oid_to_hex(&cur_oid));
continue;
}
if (!oideq(&get_commit_tree_in_graph_one(r, g, graph_commit)->object.oid,
get_commit_tree_oid(odb_commit)))
- graph_report("root tree OID for commit %s in commit-graph is %s != %s",
+ graph_report(_("root tree OID for commit %s in commit-graph is %s != %s"),
oid_to_hex(&cur_oid),
oid_to_hex(get_commit_tree_oid(graph_commit)),
oid_to_hex(get_commit_tree_oid(odb_commit)));
while (graph_parents) {
if (odb_parents == NULL) {
- graph_report("commit-graph parent list for commit %s is too long",
+ graph_report(_("commit-graph parent list for commit %s is too long"),
oid_to_hex(&cur_oid));
break;
}
if (!oideq(&graph_parents->item->object.oid, &odb_parents->item->object.oid))
- graph_report("commit-graph parent for %s is %s != %s",
+ graph_report(_("commit-graph parent for %s is %s != %s"),
oid_to_hex(&cur_oid),
oid_to_hex(&graph_parents->item->object.oid),
oid_to_hex(&odb_parents->item->object.oid));
}
if (odb_parents != NULL)
- graph_report("commit-graph parent list for commit %s terminates early",
+ graph_report(_("commit-graph parent list for commit %s terminates early"),
oid_to_hex(&cur_oid));
if (!graph_commit->generation) {
if (generation_zero == GENERATION_NUMBER_EXISTS)
- graph_report("commit-graph has generation number zero for commit %s, but non-zero elsewhere",
+ graph_report(_("commit-graph has generation number zero for commit %s, but non-zero elsewhere"),
oid_to_hex(&cur_oid));
generation_zero = GENERATION_ZERO_EXISTS;
} else if (generation_zero == GENERATION_ZERO_EXISTS)
- graph_report("commit-graph has non-zero generation number for commit %s, but zero elsewhere",
+ graph_report(_("commit-graph has non-zero generation number for commit %s, but zero elsewhere"),
oid_to_hex(&cur_oid));
if (generation_zero == GENERATION_ZERO_EXISTS)
max_generation--;
if (graph_commit->generation != max_generation + 1)
- graph_report("commit-graph generation for commit %s is %u != %u",
+ graph_report(_("commit-graph generation for commit %s is %u != %u"),
oid_to_hex(&cur_oid),
graph_commit->generation,
max_generation + 1);
if (graph_commit->date != odb_commit->date)
- graph_report("commit date for commit %s in commit-graph is %"PRItime" != %"PRItime,
+ graph_report(_("commit date for commit %s in commit-graph is %"PRItime" != %"PRItime),
oid_to_hex(&cur_oid),
graph_commit->date,
odb_commit->date);