Actual source code: packimpl.h
petsc-3.10.5 2019-03-28
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      1: #if !defined(_packimpl_h)
      2: #define _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