isl_list_templ.c

   1 /*
   2  * Copyright 2008-2009 Katholieke Universiteit Leuven
   3  * Copyright 2011      INRIA Saclay
   4  *
   5  * Use of this software is governed by the GNU LGPLv2.1 license
   6  *
   7  * Written by Sven Verdoolaege, K.U.Leuven, Departement
   8  * Computerwetenschappen, Celestijnenlaan 200A, B-3001 Leuven, Belgium
   9  * and INRIA Saclay - Ile-de-France, Parc Club Orsay Universite,
  10  * ZAC des vignes, 4 rue Jacques Monod, 91893 Orsay, France
  11  */
  12
  13 #define xCAT(A,B) A ## B
  14 #define CAT(A,B) xCAT(A,B)
  15 #undef EL
  16 #define EL CAT(isl_,BASE)
  17 #define xFN(TYPE,NAME) TYPE ## _ ## NAME
  18 #define FN(TYPE,NAME) xFN(TYPE,NAME)
  19 #define xLIST(EL) EL ## _list
  20 #define LIST(EL) xLIST(EL)
  21
  22 __isl_give LIST(EL) *FN(LIST(EL),alloc)(isl_ctx *ctx, int n)
  23 {
  24         LIST(EL) *list;
  25
  26         if (n < 0)
  27                 isl_die(ctx, isl_error_invalid,
  28                         "cannot create list of negative length",
  29                         return NULL);
  30         list = isl_alloc(ctx, LIST(EL),
  31                          sizeof(LIST(EL)) + (n - 1) * sizeof(struct EL *));
  32         if (!list)
  33                 return NULL;
  34
  35         list->ctx = ctx;
  36         isl_ctx_ref(ctx);
  37         list->ref = 1;
  38         list->size = n;
  39         list->n = 0;
  40         return list;
  41 }
  42
  43 __isl_give LIST(EL) *FN(LIST(EL),copy)(__isl_keep LIST(EL) *list)
  44 {
  45         if (!list)
  46                 return NULL;
  47
  48         list->ref++;
  49         return list;
  50 }
  51
  52 __isl_give LIST(EL) *FN(LIST(EL),add)(__isl_take LIST(EL) *list,
  53         __isl_take struct EL *el)
  54 {
  55         if (!list || !el)
  56                 goto error;
  57         isl_assert(list->ctx, list->n < list->size, goto error);
  58         list->p[list->n] = el;
  59         list->n++;
  60         return list;
  61 error:
  62         FN(EL,free)(el);
  63         FN(LIST(EL),free)(list);
  64         return NULL;
  65 }
  66
  67 void FN(LIST(EL),free)(__isl_take LIST(EL) *list)
  68 {
  69         int i;
  70
  71         if (!list)
  72                 return;
  73
  74         if (--list->ref > 0)
  75                 return;
  76
  77         isl_ctx_deref(list->ctx);
  78         for (i = 0; i < list->n; ++i)
  79                 FN(EL,free)(list->p[i]);
  80         free(list);
  81 }