Function fill_commit_graph_info

commit-graph.c:879–921

}

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, offset_pos;
	uint64_t date_high, date_low, offset;

	while (pos < g->num_commits_in_base)
		g = g->base_graph;

	if (pos >= g->num_commits + g->num_commits_in_base)
		die(_("invalid commit position. commit-graph is likely corrupt"));

	lex_index = pos - g->num_commits_in_base;
	commit_data = g->chunk_commit_data + st_mult(graph_data_width(g->hash_algo), lex_index);

	graph_data = commit_graph_data_at(item);
	graph_data->graph_pos = pos;

	date_high = get_be32(commit_data + g->hash_algo->rawsz + 8) & 0x3;
	date_low = get_be32(commit_data + g->hash_algo->rawsz + 12);
	item->date = (timestamp_t)((date_high << 32) | date_low);

	if (g->read_generation_data) {
		offset = (timestamp_t)get_be32(g->chunk_generation_data + st_mult(sizeof(uint32_t), lex_index));

		if (offset & CORRECTED_COMMIT_DATE_OFFSET_OVERFLOW) {
			if (!g->chunk_generation_data_overflow)
				die(_("commit-graph requires overflow generation data but has none"));

			offset_pos = offset ^ CORRECTED_COMMIT_DATE_OFFSET_OVERFLOW;
			if (g->chunk_generation_data_overflow_size / sizeof(uint64_t) <= offset_pos)
				die(_("commit-graph overflow generation data is too small"));
			graph_data->generation = item->date +
				get_be64(g->chunk_generation_data_overflow + sizeof(uint64_t) * offset_pos);
		} else
			graph_data->generation = item->date + offset;
	} else
		graph_data->generation = get_be32(commit_data + g->hash_algo->rawsz + 8) >> 2;

	if (g->topo_levels)
		*topo_level_slab_at(g->topo_levels, item) = get_be32(commit_data + g->hash_algo->rawsz + 8) >> 2;
}

static inline void set_commit_tree(struct commit *c, struct tree *t)
{