64   b->nroots    = -1;  in PetscSFCreate()
118   sf->nroots   = -1;  in PetscSFReset()
456 PetscErrorCode PetscSFSetGraph(PetscSF sf, PetscInt nroots, PetscInt nleaves, PetscInt ilocal[], Pe…  in PetscSFSetGraph()  argument
464 …PetscCheck(nroots >= 0, PETSC_COMM_SELF, PETSC_ERR_ARG_OUTOFRANGE, "nroots %" PetscInt_FMT ", cann…  in PetscSFSetGraph()
471   if (sf->nroots >= 0) { /* Reset only if graph already set */  in PetscSFSetGraph()
483   sf->nroots  = nroots;  in PetscSFSetGraph()
626     sf->nroots  = n;  in PetscSFSetGraphWithPattern()
632     sf->nroots  = n;  in PetscSFSetGraphWithPattern()
638     sf->nroots  = size;  in PetscSFSetGraphWithPattern()
671   PetscInt        i, nroots, nleaves, maxlocal, count, *newilocal;  in PetscSFCreateInverseSF()  local
680   PetscCall(PetscSFGetGraph(sf, &nroots, &nleaves, &ilocal, NULL));  in PetscSFCreateInverseSF()
684   PetscCall(PetscMalloc2(nroots, &roots, maxlocal, &leaves));  in PetscSFCreateInverseSF()
689   for (i = 0; i < nroots; i++) {  in PetscSFCreateInverseSF()
697   for (i = 0, count = 0; i < nroots; i++)  in PetscSFCreateInverseSF()
699   if (count == nroots) newilocal = NULL;  in PetscSFCreateInverseSF()
702     for (i = 0, count = 0; i < nroots; i++) {  in PetscSFCreateInverseSF()
750       PetscInt           nroots, nleaves;  in PetscSFDuplicate()  local
753       PetscCall(PetscSFGetGraph(sf, &nroots, &nleaves, &ilocal, &iremote));  in PetscSFDuplicate()
754 …PetscCall(PetscSFSetGraph(*newsf, nroots, nleaves, (PetscInt *)ilocal, PETSC_COPY_VALUES, (PetscSF…  in PetscSFDuplicate()
804 PetscErrorCode PetscSFGetGraph(PetscSF sf, PetscInt *nroots, PetscInt *nleaves, const PetscInt *ilo…  in PetscSFGetGraph()  argument
809     PetscCall(sf->ops->GetGraph(sf, nroots, nleaves, ilocal, iremote));  in PetscSFGetGraph()
811     if (nroots) *nroots = sf->nroots;  in PetscSFGetGraph()
909 … PetscInt_FMT ", leaves=%" PetscInt_FMT ", remote ranks=%d\n", rank, sf->nroots, sf->nleaves, sf->…  in PetscSFView()
1254   if (sf->nroots < 0) { /* Graph has not been set yet; why do we need this? */  in PetscSFGetMultiSF()
1267     PetscCall(PetscMalloc3(sf->nroots + 1, &inoffset, maxlocal, &outones, maxlocal, &outoffset));  in PetscSFGetMultiSF()
1269     for (i = 0; i < sf->nroots; i++) inoffset[i + 1] = inoffset[i] + indegree[i];  in PetscSFGetMultiSF()
1273     for (i = 0; i < sf->nroots; i++) inoffset[i] -= indegree[i]; /* Undo the increment */  in PetscSFGetMultiSF()
1275 …for (i = 0; i < sf->nroots; i++) PetscCheck(inoffset[i] + indegree[i] == inoffset[i + 1], PETSC_CO…  in PetscSFGetMultiSF()
1284 …PetscCall(PetscSFSetGraph(sf->multi, inoffset[sf->nroots], sf->nleaves, sf->mine, PETSC_COPY_VALUE…  in PetscSFGetMultiSF()
1290       for (i = 0, maxdegree = 0; i < sf->nroots; i++) maxdegree = PetscMax(maxdegree, indegree[i]);  in PetscSFGetMultiSF()
1291 …PetscCall(PetscMalloc5(sf->multi->nroots, &inranks, sf->multi->nroots, &newoffset, maxlocal, &outr…  in PetscSFGetMultiSF()
1296       for (i = 0; i < sf->nroots; i++) {  in PetscSFGetMultiSF()
1309 …PetscCall(PetscSFSetGraph(sf->multi, inoffset[sf->nroots], sf->nleaves, sf->mine, PETSC_COPY_VALUE…  in PetscSFGetMultiSF()
1341   PetscInt           i, j, n, nroots, nleaves, esf_nleaves, *new_ilocal, minleaf, maxleaf, maxlocal;  in PetscSFCreateEmbeddedRootSF()  local
1357   PetscCall(PetscSFGetGraph(sf, &nroots, &nleaves, &ilocal, &iremote));  in PetscSFCreateEmbeddedRootSF()
1363 …cted[i] < nroots, comm, PETSC_ERR_ARG_OUTOFRANGE, "selected root index %" PetscInt_FMT " is out of…  in PetscSFCreateEmbeddedRootSF()
1371     PetscCall(PetscCalloc2(nroots, &rootdata, maxlocal, &leafmem));  in PetscSFCreateEmbeddedRootSF()
1400 …PetscCall(PetscSFSetGraph(*esf, nroots, esf_nleaves, new_ilocal, PETSC_OWN_POINTER, new_iremote, P…  in PetscSFCreateEmbeddedRootSF()
1429   PetscInt           i, nroots, *leaves, *new_ilocal;  in PetscSFCreateEmbeddedLeafSF()  local
1448     PetscCall(PetscSFGetGraph(sf, &nroots, NULL, &ilocal, &iremote));  in PetscSFCreateEmbeddedLeafSF()
1458 …PetscCall(PetscSFSetGraph(*newsf, nroots, nselected, new_ilocal, PETSC_OWN_POINTER, new_iremote, P…  in PetscSFCreateEmbeddedLeafSF()
1795     PetscInt i, nroots = sf->nroots, maxlocal;  in PetscSFComputeDegreeBegin()  local
1798     PetscCall(PetscMalloc1(nroots, &sf->degree));  in PetscSFComputeDegreeBegin()
1800     for (i = 0; i < nroots; i++) sf->degree[i] = 0;  in PetscSFComputeDegreeBegin()
1866   PetscInt k = 0, nroots, nmroots;  in PetscSFComputeMultiRootOriginalNumbering()  local
1870   PetscCall(PetscSFGetGraph(sf, &nroots, NULL, NULL, NULL));  in PetscSFComputeMultiRootOriginalNumbering()
1871   if (nroots) PetscAssertPointer(degree, 2);  in PetscSFComputeMultiRootOriginalNumbering()
1877   for (PetscInt i = 0; i < nroots; i++) {  in PetscSFComputeMultiRootOriginalNumbering()
2245   PetscInt           i, j, nroots, nleaves, lnleaves, *lilocal;  in PetscSFCreateLocalSF_Private()  local
2260     PetscCall(PetscSFGetGraph(sf, &nroots, &nleaves, &ilocal, &iremote));  in PetscSFCreateLocalSF_Private()
2279 …PetscCall(PetscSFSetGraph(lsf, nroots, lnleaves, lilocal, PETSC_OWN_POINTER, liremote, PETSC_OWN_P…  in PetscSFCreateLocalSF_Private()