1:  #include <petsc/private/dmfieldimpl.h>

  3: PETSC_EXTERN PetscErrorCode DMFieldCreate_DA(DMField);
  4: PETSC_EXTERN PetscErrorCode DMFieldCreate_DS(DMField);
  5: PETSC_EXTERN PetscErrorCode DMFieldCreate_Shell(DMField);

  7: PetscFunctionList DMFieldList;

  9: /*@C
 10:    DMFieldRegisterAll - Registers all the DMField implementations

 12:    Not Collective

 14:    Level: advanced

 16: .seealso:  DMFieldRegisterDestroy()
 17: @*/
 18: PetscErrorCode  DMFieldRegisterAll(void)
 19: {

 23:   if (DMFieldRegisterAllCalled) return(0);
 24:   DMFieldRegisterAllCalled = PETSC_TRUE;
 25:   DMFieldRegister(DMFIELDDA,    DMFieldCreate_DA);
 26:   DMFieldRegister(DMFIELDDS,    DMFieldCreate_DS);
 27:   DMFieldRegister(DMFIELDSHELL, DMFieldCreate_Shell);
 28:   return(0);
 29: }

 31: /*@C
 32:   DMFieldRegister  - Adds an implementation of the DMField object.

 34:    Not collective

 36:    Input Parameters:
 37: +  name_impl - name of a new user-defined implementation
 38: -  routine_create - routine to create method context

 40:    Notes:
 41:    DMFieldRegister() may be called multiple times to add several user-defined implementations.

 43:    Sample usage:
 44: .vb
 45:    DMFieldRegister("my_impl",MyImplCreate);
 46: .ve

 48:    Then, this implementation can be chosen with the procedural interface via
 49: $     DMFieldSetType(tagger,"my_impl")

 51:    Level: advanced

 53: .seealso: DMFieldRegisterAll(), DMFieldRegisterDestroy()
 54: @*/
 55: PetscErrorCode  DMFieldRegister(const char sname[],PetscErrorCode (*function)(DMField))
 56: {

 60:   PetscFunctionListAdd(&DMFieldList,sname,function);
 61:   return(0);
 62: }