Actual source code: petscdsimpl.h
petsc-3.13.6 2020-09-29
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      1: #if !defined(PETSCDSIMPL_H)
      2: #define PETSCDSIMPL_H

      4:  #include <petscds.h>
      5:  #include <petsc/private/petscimpl.h>

      7: PETSC_EXTERN PetscBool      PetscDSRegisterAllCalled;
      8: PETSC_EXTERN PetscErrorCode PetscDSRegisterAll(void);

     10: typedef struct _n_DSBoundary *DSBoundary;

     12: struct _n_DSBoundary {
     13:   const char *name;
     14:   const char *labelname;
     15:   DMBoundaryConditionType type;
     16:   PetscInt    field;
     17:   PetscInt    numcomps;
     18:   PetscInt   *comps;
     19:   void      (*func)(void);
     20:   PetscInt    numids;
     21:   PetscInt   *ids;
     22:   void       *ctx;
     23:   DSBoundary  next;
     24: };

     26: typedef struct _PetscDSOps *PetscDSOps;
     27: struct _PetscDSOps {
     28:   PetscErrorCode (*setfromoptions)(PetscDS);
     29:   PetscErrorCode (*setup)(PetscDS);
     30:   PetscErrorCode (*view)(PetscDS,PetscViewer);
     31:   PetscErrorCode (*destroy)(PetscDS);
     32: };

     34: struct _p_PetscDS {
     35:   PETSCHEADER(struct _PetscDSOps);
     36:   void        *data;              /* Implementation object */
     37:   PetscDS     *subprobs;          /* The subspaces for each dimension */
     38:   PetscBool    setup;             /* Flag for setup */
     39:   PetscBool    isHybrid;          /* Flag for hybrid cell (this is crappy, but the only thing I can see to do now) */
     40:   PetscInt     dimEmbed;          /* The real space coordinate dimension */
     41:   PetscInt     Nf;                /* The number of solution fields */
     42:   PetscObject *disc;              /* The discretization for each solution field (PetscFE, PetscFV, etc.) */
     43:   /* Equations */
     44:   DSBoundary            boundary;      /* Linked list of boundary conditions */
     45:   PetscBool             useJacPre;     /* Flag for using the Jacobian preconditioner */
     46:   PetscBool            *implicit;      /* Flag for implicit or explicit solve for each field */
     47:   PetscPointFunc       *obj;           /* Scalar integral (like an objective function) */
     48:   PetscPointFunc       *f;             /* Weak form integrands for F, f_0, f_1 */
     49:   PetscPointJac        *g;             /* Weak form integrands for J = dF/du, g_0, g_1, g_2, g_3 */
     50:   PetscPointJac        *gp;            /* Weak form integrands for preconditioner for J, g_0, g_1, g_2, g_3 */
     51:   PetscPointJac        *gt;            /* Weak form integrands for dF/du_t, g_0, g_1, g_2, g_3 */
     52:   PetscBdPointFunc     *fBd;           /* Weak form boundary integrands F_bd, f_0, f_1 */
     53:   PetscBdPointJac      *gBd;           /* Weak form boundary integrands J_bd = dF_bd/du, g_0, g_1, g_2, g_3 */
     54:   PetscRiemannFunc     *r;             /* Riemann solvers */
     55:   PetscPointFunc       *update;        /* Direct update of field coefficients */
     56:   PetscSimplePointFunc *exactSol;      /* Exact solutions for each field */
     57:   void                **exactCtx;      /* Contexts for the exact solution functions */
     58:   PetscInt              numConstants;  /* Number of constants passed to point functions */
     59:   PetscScalar          *constants;     /* Array of constants passed to point functions */
     60:   void                 **ctx;          /* User contexts for each field */
     61:   /* Computed sizes */
     62:   PetscInt         totDim;             /* Total system dimension */
     63:   PetscInt         totComp;            /* Total field components */
     64:   PetscInt        *Nc;                 /* Number of components for each field */
     65:   PetscInt        *Nb;                 /* Number of basis functions for each field */
     66:   PetscInt        *off;                /* Offsets for each field */
     67:   PetscInt        *offDer;             /* Derivative offsets for each field */
     68:   PetscTabulation *T;                  /* Basis function and derivative tabulation for each field */
     69:   PetscTabulation *Tf;                 /* Basis function and derivative tabulation for each local face and field */
     70:   /* Work space */
     71:   PetscScalar *u;                      /* Field evaluation */
     72:   PetscScalar *u_t;                    /* Field time derivative evaluation */
     73:   PetscScalar *u_x;                    /* Field gradient evaluation */
     74:   PetscScalar *basisReal;              /* Workspace for pushforward */
     75:   PetscScalar *basisDerReal;           /* Workspace for derivative pushforward */
     76:   PetscScalar *testReal;               /* Workspace for pushforward */
     77:   PetscScalar *testDerReal;            /* Workspace for derivative pushforward */
     78:   PetscReal   *x;                      /* Workspace for computing real coordinates */
     79:   PetscScalar *f0, *f1;                /* Point evaluations of weak form residual integrands */
     80:   PetscScalar *g0, *g1, *g2, *g3;      /* Point evaluations of weak form Jacobian integrands */
     81: };

     83: typedef struct {
     84:   PetscInt dummy; /* */
     85: } PetscDS_Basic;

     87: PETSC_INTERN PetscErrorCode PetscDSIsFE_Internal(PetscDS, PetscInt, PetscBool *);

     89: #endif