isl_list.c

   1 #include "isl_list.h"
   2
   3 struct isl_basic_set_list *isl_basic_set_list_alloc(struct isl_ctx *ctx, int n)
   4 {
   5         struct isl_basic_set_list *list;
   6
   7         isl_assert(ctx, n >= 0, return NULL);
   8         list = isl_alloc(ctx, struct isl_basic_set_list,
   9                          sizeof(struct isl_basic_set_list) +
  10                          n * sizeof(struct isl_basic_set *));
  11         if (!list)
  12                 return NULL;
  13
  14         list->ctx = ctx;
  15         isl_ctx_ref(ctx);
  16         list->ref = 1;
  17         list->size = n;
  18         list->n = 0;
  19         return list;
  20 }
  21
  22 struct isl_basic_set_list *isl_basic_set_list_add(
  23         struct isl_basic_set_list *list,
  24         struct isl_basic_set *bset)
  25 {
  26         if (!list || !bset)
  27                 goto error;
  28         isl_assert(list->ctx, list->n < list->size, goto error);
  29         list->p[list->n] = bset;
  30         list->n++;
  31         return list;
  32 error:
  33         isl_basic_set_free(bset);
  34         isl_basic_set_list_free(list);
  35         return NULL;
  36 }
  37
  38 void isl_basic_set_list_free(struct isl_basic_set_list *list)
  39 {
  40         int i;
  41
  42         if (!list)
  43                 return;
  44
  45         if (--list->ref > 0)
  46                 return;
  47
  48         isl_ctx_deref(list->ctx);
  49         for (i = 0; i < list->n; ++i)
  50                 isl_basic_set_free(list->p[i]);
  51         free(list);
  52 }