Actual source code: dmlabelimpl.h
petsc-3.7.1 2016-05-15
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      1: #if !defined(_LABELIMPL_H)
      2: #define _LABELIMPL_H

      4: #include <petscdmlabel.h>
      5: #include <petscbt.h>
      6: #include <../src/sys/utils/hash.h>

      8: /* This is an integer map, in addition it is also a container class
      9:    Design points:
     10:      - Low storage is the most important design point
     11:      - We want flexible insertion and deletion
     12:      - We can live with O(log) query, but we need O(1) iteration over strata
     13: */
     14: struct _n_DMLabel {
     15:   PetscInt         refct;
     16:   PetscObjectState state;
     17:   char       *name;           /* Label name */
     18:   PetscInt    numStrata;      /* Number of integer values */
     19:   PetscInt    defaultValue;   /* Background value when no value explicitly given */
     20:   PetscInt   *stratumValues;  /* Value of each stratum */
     21:   /* Basic sorted array storage */
     22:   PetscBool  *arrayValid;     /* The array storage is valid (no additions need to be merged in) */
     23:   PetscInt   *stratumSizes;   /* Size of each stratum */
     24:   PetscInt  **points;         /* Points for each stratum, always sorted */
     25:   /* Hashtable for fast insertion */
     26:   PetscHashI *ht;             /* Hash table for fast insertion */
     27:   /* Index for fast search */
     28:   PetscInt    pStart, pEnd;   /* Bounds for index lookup */
     29:   PetscBT     bt;             /* A bit-wise index */
     30: };

     32: #endif