isl_ctx.c

   1 /*
   2  * Copyright 2008-2009 Katholieke Universiteit Leuven
   3  *
   4  * Use of this software is governed by the GNU LGPLv2.1 license
   5  *
   6  * Written by Sven Verdoolaege, K.U.Leuven, Departement
   7  * Computerwetenschappen, Celestijnenlaan 200A, B-3001 Leuven, Belgium
   8  */
   9
  10 #include "isl_ctx.h"
  11 #include "isl_vec.h"
  12
  13 isl_ctx *isl_ctx_alloc_with_options(struct isl_options *opt)
  14 {
  15         struct isl_ctx *ctx = NULL;
  16
  17         if (!opt)
  18                 return NULL;
  19
  20         ctx = isl_calloc_type(NULL, struct isl_ctx);
  21         if (!ctx)
  22                 goto error;
  23
  24         if (isl_hash_table_init(ctx, &ctx->name_hash, 0))
  25                 goto error;
  26
  27         ctx->stats = isl_calloc_type(ctx, struct isl_stats);
  28         if (!ctx->stats)
  29                 goto error;
  30
  31         ctx->opt = opt;
  32         ctx->ref = 0;
  33
  34         isl_int_init(ctx->one);
  35         isl_int_set_si(ctx->one, 1);
  36
  37         isl_int_init(ctx->negone);
  38         isl_int_set_si(ctx->negone, -1);
  39
  40         isl_int_init(ctx->normalize_gcd);
  41
  42         ctx->n_cached = 0;
  43
  44         return ctx;
  45 error:
  46         free(ctx);
  47         return NULL;
  48 }
  49
  50 struct isl_ctx *isl_ctx_alloc()
  51 {
  52         struct isl_options *opt;
  53
  54         opt = isl_options_new_with_defaults();
  55
  56         return isl_ctx_alloc_with_options(opt);
  57 }
  58
  59 void isl_ctx_ref(struct isl_ctx *ctx)
  60 {
  61         ctx->ref++;
  62 }
  63
  64 void isl_ctx_deref(struct isl_ctx *ctx)
  65 {
  66         isl_assert(ctx, ctx->ref > 0, return);
  67         ctx->ref--;
  68 }
  69
  70 void isl_ctx_free(struct isl_ctx *ctx)
  71 {
  72         if (!ctx)
  73                 return;
  74         isl_assert(ctx, ctx->ref == 0, return);
  75         isl_hash_table_clear(&ctx->name_hash);
  76         isl_blk_clear_cache(ctx);
  77         isl_int_clear(ctx->one);
  78         isl_int_clear(ctx->negone);
  79         isl_int_clear(ctx->normalize_gcd);
  80         free(ctx->opt);
  81         free(ctx->stats);
  82         free(ctx);
  83 }
  84
  85 struct isl_options *isl_ctx_options(isl_ctx *ctx)
  86 {
  87         if (!ctx)
  88                 return NULL;
  89         return ctx->opt;
  90 }