Line data    Source code

       1             : // The libMesh Finite Element Library.
       2             : // Copyright (C) 2002-2026 Benjamin S. Kirk, John W. Peterson, Roy H. Stogner
       3             : 
       4             : // This library is free software; you can redistribute it and/or
       5             : // modify it under the terms of the GNU Lesser General Public
       6             : // License as published by the Free Software Foundation; either
       7             : // version 2.1 of the License, or (at your option) any later version.
       8             : 
       9             : // This library is distributed in the hope that it will be useful,
      10             : // but WITHOUT ANY WARRANTY; without even the implied warranty of
      11             : // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
      12             : // Lesser General Public License for more details.
      13             : 
      14             : // You should have received a copy of the GNU Lesser General Public
      15             : // License along with this library; if not, write to the Free Software
      16             : // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
      17             : 
      18             : #ifndef LIBMESH_PETSC_SOLVER_EXCEPTION_H
      19             : #define LIBMESH_PETSC_SOLVER_EXCEPTION_H
      20             : 
      21             : #include "libmesh/libmesh_common.h"
      22             : 
      23             : #ifdef LIBMESH_HAVE_PETSC
      24             : 
      25             : #include "libmesh/libmesh_exceptions.h"
      26             : #include "libmesh/petsc_macro.h"
      27             : #include "timpi/communicator.h"
      28             : 
      29             : #ifdef I
      30             : # define LIBMESH_SAW_I
      31             : #endif
      32             : 
      33             : #include "libmesh/ignore_warnings.h"
      34             : #include <petscsys.h>
      35             : #include "libmesh/restore_warnings.h"
      36             : 
      37             : #ifndef LIBMESH_SAW_I
      38             : # undef I // Avoid complex.h contamination
      39             : #endif
      40             : 
      41             : namespace libMesh
      42             : {
      43             : 
      44             : // The SolverException class is only defined when exceptions are enabled.
      45             : #ifdef LIBMESH_ENABLE_EXCEPTIONS
      46             : 
      47             : /**
      48             :  * A specialization of the SolverException class for PETSc.
      49             :  */
      50             : class PetscSolverException : public SolverException
      51             : {
      52             : public:
      53           0 :   PetscSolverException(int error_code_in) :
      54           0 :     SolverException(error_code_in)
      55             :   {
      56             :     const char * text;
      57             : #if PETSC_VERSION_LESS_THAN(3,25,0)
      58             :     char * specific;
      59             : #else
      60             :     const char * specific;
      61             : #endif
      62           0 :     auto ierr = PetscErrorMessage(cast_int<PetscErrorCode>(error_code), &text, &specific);
      63             :     // This is one scenario where we ignore the error code
      64             :     // returned by a PETSc function :)
      65           0 :     libmesh_ignore(ierr);
      66             : 
      67             :     // Usually the "specific" error message string is more useful than
      68             :     // the generic text corresponding to the error_code, since many
      69             :     // SETERRQ calls just use error_code == 1
      70           0 :     if (specific)
      71           0 :       what_message = std::string(specific);
      72           0 :     else if (text)
      73           0 :       what_message = std::string(text);
      74           0 :   }
      75             : };
      76             : 
      77             : 
      78             : 
      79             : // Macro which we call in functions returning a datatype convertible
      80             : // to PetscErrorCode after every PETSc function that returns an error code.
      81             : #define LIBMESH_CHKERRQ(ierr)                    \
      82             :   do {                                           \
      83             :     if (ierr != 0)                               \
      84             :       throw libMesh::PetscSolverException(ierr); \
      85             :   } while (0)
      86             : 
      87             : // Two-argument CHKERR macro that takes both a comm and an error
      88             : // code. When exceptions are enabled, the comm is not used for
      89             : // anything, so we libmesh_ignore() it.
      90             : #define LIBMESH_CHKERRA(comm, ierr)             \
      91             :   do {                                          \
      92             :     libmesh_ignore(comm);                       \
      93             :     LIBMESH_CHKERRQ(ierr);                      \
      94             :   } while (0)
      95             : 
      96             : #else
      97             : 
      98             : // If we don't have exceptions enabled, just fall back on calling
      99             : // PETSc's CHKERRQ or CHKERRABORT macros.
     100             : #define LIBMESH_CHKERRQ(ierr) CHKERRQ(ierr);
     101             : #define LIBMESH_CHKERRA(comm, ierr) CHKERRABORT(comm, ierr);
     102             : 
     103             : #endif
     104             : 
     105             : #define PETSC_BEGIN_END(Function)                                       \
     106             :   template<class ...Args>                                               \
     107             :   inline                                                                \
     108             :   void Function ## BeginEnd(const Parallel::Communicator & comm, const Args&... args) \
     109             :   {                                                                     \
     110             :     PetscErrorCode ierr = LIBMESH_PETSC_SUCCESS;                        \
     111             :     ierr = Function ## Begin(args...);                                  \
     112             :     LIBMESH_CHKERRA(comm.get(), ierr);                                  \
     113             :     ierr = Function ## End(args...);                                    \
     114             :     LIBMESH_CHKERRA(comm.get(), ierr);                                  \
     115             :   }
     116             : 
     117      112474 : PETSC_BEGIN_END(VecScatter) // VecScatterBeginEnd
     118     1083370 : PETSC_BEGIN_END(MatAssembly) // MatAssemblyBeginEnd
     119     3544041 : PETSC_BEGIN_END(VecAssembly) // VecAssemblyBeginEnd
     120     3754969 : PETSC_BEGIN_END(VecGhostUpdate) // VecGhostUpdateBeginEnd
     121             : 
     122             : // To use instead of PETSc idioms that'd call CHKERRQ or PetscCall().
     123             : #define LibmeshPetscCallQ(...)                                          \
     124             :   do                                                                    \
     125             :   {                                                                     \
     126             :     PetscErrorCode libmesh_petsc_call_ierr;                             \
     127             :     libmesh_petsc_call_ierr = __VA_ARGS__;                              \
     128             :     LIBMESH_CHKERRQ(libmesh_petsc_call_ierr);                           \
     129             :   } while (0)
     130             : 
     131             : // To use instead of PETSc idioms that'd call CHKERRABORT or PetscCallAbort().
     132             : #define LibmeshPetscCallA(comm, ...)                                    \
     133             :   do                                                                    \
     134             :   {                                                                     \
     135             :     PetscErrorCode libmesh_petsc_call_ierr;                             \
     136             :     libmesh_petsc_call_ierr = __VA_ARGS__;                              \
     137             :     LIBMESH_CHKERRA(comm, libmesh_petsc_call_ierr);                     \
     138             :   } while (0)
     139             : 
     140             : // Shortcut for LibmeshPetscCallA for use within a ParallelObject, i.e. when
     141             : // we can rely on the communicator being available from the "this" pointer.
     142             : #define LibmeshPetscCall(...)                                           \
     143             :   LibmeshPetscCallA(this->comm().get(), __VA_ARGS__)
     144             : 
     145             : // Shortcut for LibmeshPetscCallA for use when we have a Parallel::Communicator
     146             : // available instead of just a bare MPI communicator.
     147             : #define LibmeshPetscCall2(comm, ...)                                    \
     148             :   LibmeshPetscCallA(comm.get(), __VA_ARGS__)
     149             : 
     150             : #ifdef LIBMESH_ENABLE_EXCEPTIONS
     151             : #define LibmeshPetscCallExternal(func, ...)                             \
     152             :   do {                                                                  \
     153             :     const auto libmesh_petsc_call_external_ierr = cast_int<int>(func(__VA_ARGS__)); \
     154             :     if (libmesh_petsc_call_external_ierr != 0)                          \
     155             :       throw PetscSolverException(libmesh_petsc_call_external_ierr);     \
     156             :   } while (0)
     157             : #else
     158             : #define LibmeshPetscCallExternal(func, ...)                             \
     159             :   do {                                                                  \
     160             :     const auto libmesh_petsc_call_external_ierr = cast_int<int>(func(__VA_ARGS__)); \
     161             :     if (libmesh_petsc_call_external_ierr != 0)                          \
     162             :       libmesh_terminate_handler();                                      \
     163             :   } while (0)
     164             : #endif
     165             : 
     166             : 
     167             : } // namespace libMesh
     168             : 
     169             : #endif // LIBMESH_HAVE_PETSC
     170             : #endif // LIBMESH_PETSC_SOLVER_EXCEPTION_H