Actual source code: packimpl.h

  1: #ifndef PETSC_PACKIMPL_H
  2: #define PETSC_PACKIMPL_H

  4: #include <petscdmcomposite.h>
  5: #include <petsc/private/dmimpl.h>

  7: /*
  8:    rstart is where an array/subvector starts in the global parallel vector, so arrays
  9:    rstarts are meaningless (and set to the previous one) except on the processor where the array lives
 10: */

 12: struct DMCompositeLink {
 13:   struct DMCompositeLink *next;
 14:   PetscInt                n;       /* number of owned */
 15:   PetscInt                rstart;  /* rstart is relative to this process */
 16:   PetscInt                grstart; /* grstart is relative to all processes */
 17:   PetscInt                nlocal;

 19:   /* only used for DMCOMPOSITE_DM */
 20:   PetscInt *grstarts; /* global row for first unknown of this DM on each process */
 21:   DM        dm;
 22: };

 24: typedef struct {
 25:   PetscInt                n, N, rstart; /* rstart is relative to all processors, n unknowns owned by this process, N is total unknowns */
 26:   PetscInt                nghost;       /* number of all local entries (includes DMDA ghost points) */
 27:   PetscInt                nDM, nmine;   /* how many DM's and separate redundant arrays used to build DM(nmine is ones on this process) */
 28:   PetscBool               setup;        /* after this is set, cannot add new links to the DM*/
 29:   struct DMCompositeLink *next;

 31:   PetscErrorCode (*FormCoupleLocations)(DM, Mat, PetscInt *, PetscInt *, PetscInt, PetscInt, PetscInt, PetscInt);
 32: } DM_Composite;

 34: PETSC_INTERN PetscErrorCode DMCreateMatrix_Composite(DM, Mat *);

 36: #endif // PETSC_PACKIMPL_H