- factors= syncState->matchingModule->finalizeMatching(syncState);
-
- /* The offsets are adjusted so the lowest one is 0. This is done because
- * of a Lttv specific limitation: events cannot have negative times. By
- * having non-negative offsets, events cannot be moved backwards to
- * negative times.
- */
- minOffset= 0;
- for (i= 0; i < syncState->traceNb; i++)
- {
- minOffset= MIN(g_array_index(factors, Factors, i).offset, minOffset);
- }
-
- for (i= 0; i < syncState->traceNb; i++)
- {
- g_array_index(factors, Factors, i).offset-= minOffset;
- }
-
- /* Because the timestamps are corrected at the TSC level (not at the
- * LttTime level) all trace frequencies must be made equal. We choose to
- * use the frequency of the system with the lowest drift
- */
- minDrift= INFINITY;
- refFreqTrace= 0;
- for (i= 0; i < syncState->traceNb; i++)
- {
- if (g_array_index(factors, Factors, i).drift < minDrift)
- {
- minDrift= g_array_index(factors, Factors, i).drift;
- refFreqTrace= i;
- }
- }
- g_assert(syncState->traceNb == 0 || minDrift != INFINITY);
-
- // Write the factors to the LttTrace structures
- for (i= 0; i < syncState->traceNb; i++)
- {
- LttTrace* t;
- Factors* traceFactors;
-
- t= processingData->traceSetContext->traces[i]->t;
- traceFactors= &g_array_index(factors, Factors, i);
-
- t->drift= traceFactors->drift;
- t->offset= traceFactors->offset;
- t->start_freq=
- processingData->traceSetContext->traces[refFreqTrace]->t->start_freq;
- t->freq_scale=
- processingData->traceSetContext->traces[refFreqTrace]->t->freq_scale;
- t->start_time_from_tsc =
- ltt_time_from_uint64(tsc_to_uint64(t->freq_scale, t->start_freq,
- t->drift * t->start_tsc + t->offset));
- }
-
- g_array_free(factors, TRUE);
-
- lttv_traceset_context_compute_time_span(processingData->traceSetContext,
- &processingData->traceSetContext->time_span);
-
- g_debug("traceset start %ld.%09ld end %ld.%09ld",
- processingData->traceSetContext->time_span.start_time.tv_sec,
- processingData->traceSetContext->time_span.start_time.tv_nsec,
- processingData->traceSetContext->time_span.end_time.tv_sec,
- processingData->traceSetContext->time_span.end_time.tv_nsec);