- if (t_clock->absolute)
- v = t_clock->name;
- else
- v = t_clock->uuid;
- if (v) {
- struct ctf_clock *tc_clock;
-
- tc_clock = g_hash_table_lookup(tc_clocks,
- (gpointer) (unsigned long) v);
- if (!tc_clock) {
- /*
- * For now, we only support CTF that has one
- * single clock uuid or name (absolute ref).
- */
- if (g_hash_table_size(tc_clocks) > 0) {
- fprintf(stderr, "[error] Only CTF traces with a single clock description are supported by this babeltrace version.\n");
- }
- if (!clock_match->tc->offset_nr) {
- clock_match->tc->offset_first =
- (t_clock->offset_s * 1000000000ULL) + t_clock->offset;
- clock_match->tc->delta_offset_first_sum = 0;
- clock_match->tc->offset_nr++;
- clock_match->tc->single_clock_offset_avg =
- clock_match->tc->offset_first;
- }
- g_hash_table_insert(tc_clocks,
- (gpointer) (unsigned long) v,
- value);
- } else {
- int64_t diff_ns;
-
- /*
- * Check that the offsets match. If not, warn
- * the user that we do an arbitrary choice.
- */
- diff_ns = tc_clock->offset_s;
- diff_ns -= t_clock->offset_s;
- diff_ns *= 1000000000ULL;
- diff_ns += tc_clock->offset;
- diff_ns -= t_clock->offset;
- printf_debug("Clock \"%s\" offset between traces has a delta of %" PRIu64 " ns.",
- g_quark_to_string(tc_clock->name),
- diff_ns < 0 ? -diff_ns : diff_ns);
- if (diff_ns > 10000) {
- fprintf(stderr, "[warning] Clock \"%s\" offset differs between traces (delta %" PRIu64 " ns). Using average.\n",
- g_quark_to_string(tc_clock->name),
- diff_ns < 0 ? -diff_ns : diff_ns);
- }
- /* Compute average */
- clock_match->tc->delta_offset_first_sum +=
- (t_clock->offset_s * 1000000000ULL) + t_clock->offset
- - clock_match->tc->offset_first;
- clock_match->tc->offset_nr++;
- clock_match->tc->single_clock_offset_avg =
- clock_match->tc->offset_first
- + (clock_match->tc->delta_offset_first_sum / clock_match->tc->offset_nr);