438     PetscInt       *labels, *rootlabels, *mrlabels;  in PCBDDCGraphComputeConnectedComponents()  local
441     PetscCall(PetscMalloc1(graph->nvtxs, &labels));  in PCBDDCGraphComputeConnectedComponents()
442     PetscCall(PetscArrayzero(labels, graph->nvtxs));  in PCBDDCGraphComputeConnectedComponents()
447           labels[graph->queue[j]] = -(k + s + 1);  in PCBDDCGraphComputeConnectedComponents()
450           labels[graph->queue[j]] = -(k + 1);  in PCBDDCGraphComputeConnectedComponents()
463     PetscCall(PetscSFGatherBegin(graph->interface_subset_sf, MPIU_INT, labels, mrlabels));  in PCBDDCGraphComputeConnectedComponents()
464     PetscCall(PetscSFGatherEnd(graph->interface_subset_sf, MPIU_INT, labels, mrlabels));  in PCBDDCGraphComputeConnectedComponents()
513 …PetscCall(PetscSFBcastBegin(graph->interface_subset_sf, MPIU_INT, rootlabels, labels, MPI_REPLACE)…  in PCBDDCGraphComputeConnectedComponents()
514 … PetscCall(PetscSFBcastEnd(graph->interface_subset_sf, MPIU_INT, rootlabels, labels, MPI_REPLACE));  in PCBDDCGraphComputeConnectedComponents()
530         const PetscInt jlabel = labels[oqueue[j]];  in PCBDDCGraphComputeConnectedComponents()
536             if (labels[oqueue[k]] == jlabel) {  in PCBDDCGraphComputeConnectedComponents()
538               labels[oqueue[k]]         = 0;  in PCBDDCGraphComputeConnectedComponents()
545     PetscCall(PetscFree(labels));  in PCBDDCGraphComputeConnectedComponents()