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: .keywords: DMField, register, all

 18: .seealso:  DMFieldRegisterDestroy()
 19: @*/
 20: PetscErrorCode  DMFieldRegisterAll(void)
 21: {

 25:   if (DMFieldRegisterAllCalled) return(0);
 26:   DMFieldRegisterAllCalled = PETSC_TRUE;
 27:   DMFieldRegister(DMFIELDDA,    DMFieldCreate_DA);
 28:   DMFieldRegister(DMFIELDDS,    DMFieldCreate_DS);
 29:   DMFieldRegister(DMFIELDSHELL, DMFieldCreate_Shell);
 30:   return(0);
 31: }

 33: /*@C
 34:   DMFieldRegister  - Adds an implementation of the DMField object.

 36:    Not collective

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

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

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

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

 53:    Level: advanced

 55: .keywords: DMField, register

 57: .seealso: DMFieldRegisterAll(), DMFieldRegisterDestroy()
 58: @*/
 59: PetscErrorCode  DMFieldRegister(const char sname[],PetscErrorCode (*function)(DMField))
 60: {

 64:   PetscFunctionListAdd(&DMFieldList,sname,function);
 65:   return(0);
 66: }