PetscCallAbort#

Checks error code returned from PETSc function, if non-zero it aborts immediately by calling MPI_Abort()

Synopsis#

#include <petscerror.h>
void PetscCallAbort(MPI_Comm comm, PetscErrorCode ierr)

Collective

Input Parameters#

comm - the MPI communicator on which to abort
ierr - nonzero error code, see the list of standard error codes in include/petscerror.h

Notes#

This macro has identical type and usage semantics to PetscCall() with the important caveat that this macro does not return. Instead, if ierr is nonzero it calls the PETSc error handler and then immediately calls MPI_Abort(). It can therefore be used anywhere.

As per MPI_Abort() semantics the communicator passed must be valid, although there is currently no attempt made at handling any potential errors from MPI_Abort(). Note that while MPI_Abort() is required to terminate only those processes which reside on comm, it is often the case that MPI_Abort() terminates all processes.

Example Usage#

  PetscErrorCode boom(void) { return PETSC_ERR_MEM; }

  void foo(void)
  {
    PetscCallAbort(PETSC_COMM_WORLD,boom()); // OK, does not return a type
  }

  double bar(void)
  {
    PetscCallAbort(PETSC_COMM_WORLD,boom()); // OK, does not return a type
  }

  PetscCallAbort(MPI_COMM_NULL,boom()); // ERROR, communicator should be valid

  struct baz
  {
    baz()
    {
      PetscCallAbort(PETSC_COMM_SELF,boom()); // OK
    }

    ~baz()
    {
      PetscCallAbort(PETSC_COMM_SELF,boom()); // OK (in fact the only way to handle PETSc errors)
    }
  };