#include "progress.h"
#include "bloom.h"
#include "commit-slab.h"
+#include "shallow.h"
void git_test_write_commit_graph_or_die(void)
{
commit_pos_at(&commit_pos, b);
}
+define_commit_slab(commit_graph_data_slab, struct commit_graph_data);
+static struct commit_graph_data_slab commit_graph_data_slab =
+ COMMIT_SLAB_INIT(1, commit_graph_data_slab);
+
+uint32_t commit_graph_position(const struct commit *c)
+{
+ struct commit_graph_data *data =
+ commit_graph_data_slab_peek(&commit_graph_data_slab, c);
+
+ return data ? data->graph_pos : COMMIT_NOT_FROM_GRAPH;
+}
+
+uint32_t commit_graph_generation(const struct commit *c)
+{
+ struct commit_graph_data *data =
+ commit_graph_data_slab_peek(&commit_graph_data_slab, c);
+
+ if (!data)
+ return GENERATION_NUMBER_INFINITY;
+ else if (data->graph_pos == COMMIT_NOT_FROM_GRAPH)
+ return GENERATION_NUMBER_INFINITY;
+
+ return data->generation;
+}
+
+static struct commit_graph_data *commit_graph_data_at(const struct commit *c)
+{
+ unsigned int i, nth_slab;
+ struct commit_graph_data *data =
+ commit_graph_data_slab_peek(&commit_graph_data_slab, c);
+
+ if (data)
+ return data;
+
+ nth_slab = c->index / commit_graph_data_slab.slab_size;
+ data = commit_graph_data_slab_at(&commit_graph_data_slab, c);
+
+ /*
+ * commit-slab initializes elements with zero, overwrite this with
+ * COMMIT_NOT_FROM_GRAPH for graph_pos.
+ *
+ * We avoid initializing generation with checking if graph position
+ * is not COMMIT_NOT_FROM_GRAPH.
+ */
+ for (i = 0; i < commit_graph_data_slab.slab_size; i++) {
+ commit_graph_data_slab.slab[nth_slab][i].graph_pos =
+ COMMIT_NOT_FROM_GRAPH;
+ }
+
+ return data;
+}
+
static int commit_gen_cmp(const void *va, const void *vb)
{
const struct commit *a = *(const struct commit **)va;
const struct commit *b = *(const struct commit **)vb;
+ uint32_t generation_a = commit_graph_generation(a);
+ uint32_t generation_b = commit_graph_generation(b);
/* lower generation commits first */
- if (a->generation < b->generation)
+ if (generation_a < generation_b)
return -1;
- else if (a->generation > b->generation)
+ else if (generation_a > generation_b)
return 1;
/* use date as a heuristic when generations are equal */
}
prepare_commit_graft(r);
- if (r->parsed_objects && r->parsed_objects->grafts_nr)
+ if (r->parsed_objects &&
+ (r->parsed_objects->grafts_nr || r->parsed_objects->substituted_parent))
return 0;
if (is_repository_shallow(r))
return 0;
if (data + graph_size - chunk_lookup <
GRAPH_CHUNKLOOKUP_WIDTH) {
error(_("commit-graph chunk lookup table entry missing; file may be incomplete"));
- free(graph);
- return NULL;
+ goto free_and_return;
}
chunk_id = get_be32(chunk_lookup + 0);
if (chunk_offset > graph_size - the_hash_algo->rawsz) {
error(_("commit-graph improper chunk offset %08x%08x"), (uint32_t)(chunk_offset >> 32),
(uint32_t)chunk_offset);
- free(graph);
- return NULL;
+ goto free_and_return;
}
switch (chunk_id) {
if (chunk_repeated) {
error(_("commit-graph chunk id %08x appears multiple times"), chunk_id);
- free(graph);
- return NULL;
+ goto free_and_return;
}
if (last_chunk_id == GRAPH_CHUNKID_OIDLOOKUP)
/* We need both the bloom chunks to exist together. Else ignore the data */
graph->chunk_bloom_indexes = NULL;
graph->chunk_bloom_data = NULL;
- graph->bloom_filter_settings = NULL;
+ FREE_AND_NULL(graph->bloom_filter_settings);
}
hashcpy(graph->oid.hash, graph->data + graph->data_len - graph->hash_len);
- if (verify_commit_graph_lite(graph)) {
- free(graph);
- return NULL;
- }
+ if (verify_commit_graph_lite(graph))
+ goto free_and_return;
return graph;
+
+free_and_return:
+ free(graph->bloom_filter_settings);
+ free(graph);
+ return NULL;
}
static struct commit_graph *load_commit_graph_one(const char *graph_file,
c = lookup_commit(r, &oid);
if (!c)
die(_("could not find commit %s"), oid_to_hex(&oid));
- c->graph_pos = pos;
+ commit_graph_data_at(c)->graph_pos = pos;
return &commit_list_insert(c, pptr)->next;
}
static void fill_commit_graph_info(struct commit *item, struct commit_graph *g, uint32_t pos)
{
const unsigned char *commit_data;
+ struct commit_graph_data *graph_data;
uint32_t lex_index;
while (pos < g->num_commits_in_base)
lex_index = pos - g->num_commits_in_base;
commit_data = g->chunk_commit_data + GRAPH_DATA_WIDTH * lex_index;
- item->graph_pos = pos;
- item->generation = get_be32(commit_data + g->hash_len + 8) >> 2;
+
+ graph_data = commit_graph_data_at(item);
+ graph_data->graph_pos = pos;
+ graph_data->generation = get_be32(commit_data + g->hash_len + 8) >> 2;
}
static inline void set_commit_tree(struct commit *c, struct tree *t)
uint32_t *parent_data_ptr;
uint64_t date_low, date_high;
struct commit_list **pptr;
+ struct commit_graph_data *graph_data;
const unsigned char *commit_data;
uint32_t lex_index;
* Store the "full" position, but then use the
* "local" position for the rest of the calculation.
*/
- item->graph_pos = pos;
+ graph_data = commit_graph_data_at(item);
+ graph_data->graph_pos = pos;
lex_index = pos - g->num_commits_in_base;
commit_data = g->chunk_commit_data + (g->hash_len + 16) * lex_index;
date_low = get_be32(commit_data + g->hash_len + 12);
item->date = (timestamp_t)((date_high << 32) | date_low);
- item->generation = get_be32(commit_data + g->hash_len + 8) >> 2;
+ graph_data->generation = get_be32(commit_data + g->hash_len + 8) >> 2;
pptr = &item->parents;
static int find_commit_in_graph(struct commit *item, struct commit_graph *g, uint32_t *pos)
{
- if (item->graph_pos != COMMIT_NOT_FROM_GRAPH) {
- *pos = item->graph_pos;
+ uint32_t graph_pos = commit_graph_position(item);
+ if (graph_pos != COMMIT_NOT_FROM_GRAPH) {
+ *pos = graph_pos;
return 1;
} else {
struct commit_graph *cur_g = g;
{
struct object_id oid;
const unsigned char *commit_data;
+ uint32_t graph_pos = commit_graph_position(c);
- while (c->graph_pos < g->num_commits_in_base)
+ while (graph_pos < g->num_commits_in_base)
g = g->base_graph;
commit_data = g->chunk_commit_data +
- GRAPH_DATA_WIDTH * (c->graph_pos - g->num_commits_in_base);
+ GRAPH_DATA_WIDTH * (graph_pos - g->num_commits_in_base);
hashcpy(oid.hash, commit_data);
set_commit_tree(c, lookup_tree(r, &oid));
{
if (c->maybe_tree)
return c->maybe_tree;
- if (c->graph_pos == COMMIT_NOT_FROM_GRAPH)
+ if (commit_graph_position(c) == COMMIT_NOT_FROM_GRAPH)
BUG("get_commit_tree_in_graph_one called from non-commit-graph commit");
return load_tree_for_commit(r, g, (struct commit *)c);
else
packedDate[0] = 0;
- packedDate[0] |= htonl((*list)->generation << 2);
+ packedDate[0] |= htonl(commit_graph_data_at(*list)->generation << 2);
packedDate[1] = htonl((*list)->date);
hashwrite(f, packedDate, 8);
continue;
if (ctx->split) {
if ((!parse_commit(commit) &&
- commit->graph_pos == COMMIT_NOT_FROM_GRAPH) ||
+ commit_graph_position(commit) == COMMIT_NOT_FROM_GRAPH) ||
flags == COMMIT_GRAPH_SPLIT_REPLACE)
add_missing_parents(ctx, commit);
} else if (!parse_commit_no_graph(commit))
_("Computing commit graph generation numbers"),
ctx->commits.nr);
for (i = 0; i < ctx->commits.nr; i++) {
+ uint32_t generation = commit_graph_data_at(ctx->commits.list[i])->generation;
+
display_progress(ctx->progress, i + 1);
- if (ctx->commits.list[i]->generation != GENERATION_NUMBER_INFINITY &&
- ctx->commits.list[i]->generation != GENERATION_NUMBER_ZERO)
+ if (generation != GENERATION_NUMBER_INFINITY &&
+ generation != GENERATION_NUMBER_ZERO)
continue;
commit_list_insert(ctx->commits.list[i], &list);
uint32_t max_generation = 0;
for (parent = current->parents; parent; parent = parent->next) {
- if (parent->item->generation == GENERATION_NUMBER_INFINITY ||
- parent->item->generation == GENERATION_NUMBER_ZERO) {
+ generation = commit_graph_data_at(parent->item)->generation;
+
+ if (generation == GENERATION_NUMBER_INFINITY ||
+ generation == GENERATION_NUMBER_ZERO) {
all_parents_computed = 0;
commit_list_insert(parent->item, &list);
break;
- } else if (parent->item->generation > max_generation) {
- max_generation = parent->item->generation;
+ } else if (generation > max_generation) {
+ max_generation = generation;
}
}
if (all_parents_computed) {
- current->generation = max_generation + 1;
+ struct commit_graph_data *data = commit_graph_data_at(current);
+
+ data->generation = max_generation + 1;
pop_commit(&list);
- if (current->generation > GENERATION_NUMBER_MAX)
- current->generation = GENERATION_NUMBER_MAX;
+ if (data->generation > GENERATION_NUMBER_MAX)
+ data->generation = GENERATION_NUMBER_MAX;
}
}
}
if (ctx->split) {
struct commit *c = lookup_commit(ctx->r, &ctx->oids.list[i]);
- if (!c || c->graph_pos != COMMIT_NOT_FROM_GRAPH)
+ if (!c || commit_graph_position(c) != COMMIT_NOT_FROM_GRAPH)
continue;
}
ctx->commits.list[ctx->commits.nr] = lookup_commit(ctx->r, &ctx->oids.list[i]);
if (ctx->split && flags != COMMIT_GRAPH_SPLIT_REPLACE &&
- ctx->commits.list[ctx->commits.nr]->graph_pos != COMMIT_NOT_FROM_GRAPH)
+ commit_graph_position(ctx->commits.list[ctx->commits.nr]) != COMMIT_NOT_FROM_GRAPH)
continue;
if (ctx->split && flags == COMMIT_GRAPH_SPLIT_REPLACE)
if (ctx->split) {
char *lock_name = get_chain_filename(ctx->odb);
- hold_lock_file_for_update(&lk, lock_name, LOCK_DIE_ON_ERROR);
+ hold_lock_file_for_update_mode(&lk, lock_name,
+ LOCK_DIE_ON_ERROR, 0444);
fd = git_mkstemp_mode(ctx->graph_name, 0444);
if (fd < 0) {
return -1;
}
+ if (adjust_shared_perm(ctx->graph_name)) {
+ error(_("unable to adjust shared permissions for '%s'"),
+ ctx->graph_name);
+ return -1;
+ }
+
f = hashfd(fd, ctx->graph_name);
} else {
- hold_lock_file_for_update(&lk, ctx->graph_name, LOCK_DIE_ON_ERROR);
+ hold_lock_file_for_update_mode(&lk, ctx->graph_name,
+ LOCK_DIE_ON_ERROR, 0444);
fd = lk.tempfile->fd;
f = hashfd(lk.tempfile->fd, lk.tempfile->filename.buf);
}
struct commit *graph_commit, *odb_commit;
struct commit_list *graph_parents, *odb_parents;
uint32_t max_generation = 0;
+ uint32_t generation;
display_progress(progress, i + 1);
hashcpy(cur_oid.hash, g->chunk_oid_lookup + g->hash_len * i);
oid_to_hex(&graph_parents->item->object.oid),
oid_to_hex(&odb_parents->item->object.oid));
- if (graph_parents->item->generation > max_generation)
- max_generation = graph_parents->item->generation;
+ generation = commit_graph_generation(graph_parents->item);
+ if (generation > max_generation)
+ max_generation = generation;
graph_parents = graph_parents->next;
odb_parents = odb_parents->next;
graph_report(_("commit-graph parent list for commit %s terminates early"),
oid_to_hex(&cur_oid));
- if (!graph_commit->generation) {
+ if (!commit_graph_generation(graph_commit)) {
if (generation_zero == GENERATION_NUMBER_EXISTS)
graph_report(_("commit-graph has generation number zero for commit %s, but non-zero elsewhere"),
oid_to_hex(&cur_oid));
if (max_generation == GENERATION_NUMBER_MAX)
max_generation--;
- if (graph_commit->generation != max_generation + 1)
+ generation = commit_graph_generation(graph_commit);
+ if (generation != max_generation + 1)
graph_report(_("commit-graph generation for commit %s is %u != %u"),
oid_to_hex(&cur_oid),
- graph_commit->generation,
+ generation,
max_generation + 1);
if (graph_commit->date != odb_commit->date)
projects / thirdparty / git.git / blobdiff