本文整理汇总了C++中NonlinearImplicitSystem::comm方法的典型用法代码示例。如果您正苦于以下问题：C++ NonlinearImplicitSystem::comm方法的具体用法？C++ NonlinearImplicitSystem::comm怎么用？C++ NonlinearImplicitSystem::comm使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类NonlinearImplicitSystem的用法示例。
在下文中一共展示了NonlinearImplicitSystem::comm方法的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。
示例1: DMLibMeshSetSystem
PetscErrorCode DMLibMeshSetSystem(DM dm, NonlinearImplicitSystem& sys)
{
const Parallel::Communicator &comm(sys.comm());
PetscErrorCode ierr;
PetscFunctionBegin;
PetscValidHeaderSpecific(dm,DM_CLASSID,1);
PetscBool islibmesh;
ierr = PetscObjectTypeCompare((PetscObject)dm, DMLIBMESH,&islibmesh);
if(!islibmesh) SETERRQ2(((PetscObject)dm)->comm, PETSC_ERR_ARG_WRONG, "Got DM oftype %s, not of type %s", ((PetscObject)dm)->type_name, DMLIBMESH);
if(dm->setupcalled) SETERRQ(((PetscObject)dm)->comm, PETSC_ERR_ARG_WRONGSTATE, "Cannot reset the libMesh system after DM has been set up.");
DM_libMesh *dlm = (DM_libMesh *)(dm->data);
dlm->sys =&sys;
/* Initially populate the sets of active blockids and varids using all of the
existing blocks/variables (only variables are supported at the moment). */
DofMap& dofmap = dlm->sys->get_dof_map();
dlm->varids->clear();
dlm->varnames->clear();
for(unsigned int v = 0; v < dofmap.n_variables(); ++v) {
std::string vname = dofmap.variable(v).name();
dlm->varids->insert(std::pair<std::string,unsigned int>(vname,v));
dlm->varnames->insert(std::pair<unsigned int,std::string>(v,vname));
}
const MeshBase& mesh = dlm->sys->get_mesh();
dlm->blockids->clear();
dlm->blocknames->clear();
std::set<subdomain_id_type> blocks;
/* The following effectively is a verbatim copy of MeshBase::n_subdomains(). */
// This requires an inspection on every processor
libmesh_parallel_only(mesh.comm());
MeshBase::const_element_iterator el = mesh.active_elements_begin();
const MeshBase::const_element_iterator end = mesh.active_elements_end();
for (; el!=end; ++el)
blocks.insert((*el)->subdomain_id());
// Some subdomains may only live on other processors
comm.set_union(blocks);
std::set<subdomain_id_type>::iterator bit = blocks.begin();
std::set<subdomain_id_type>::iterator bend = blocks.end();
if(bit == bend) SETERRQ(((PetscObject)dm)->comm, PETSC_ERR_PLIB, "No mesh blocks found.");
for(; bit != bend; ++bit) {
subdomain_id_type bid = *bit;
std::string bname = mesh.subdomain_name(bid);
if(!bname.length()) {
/* Block names are currently implemented for Exodus II meshes
only, so we might have to make up our own block names and
maintain our own mapping of block ids to names.
*/
std::ostringstream ss;
ss << "dm" << bid;
bname = ss.str();
}
dlm->blockids->insert(std::pair<std::string,unsigned int>(bname,bid));
dlm->blocknames->insert(std::pair<unsigned int,std::string>(bid,bname));
}
ierr = DMLibMeshSetUpName_Private(dm); CHKERRQ(ierr);
PetscFunctionReturn(0);
}