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_private.h>
  11 #include <isl/vec.h>
  12 #include <isl/options.h>
  13
  14 static struct isl_options *find_nested_options(struct isl_args *args,
  15         void *opt, struct isl_args *wanted)
  16 {
  17         int i;
  18         struct isl_options *options;
  19
  20         if (args == wanted)
  21                 return opt;
  22
  23         for (i = 0; args->args[i].type != isl_arg_end; ++i) {
  24                 if (args->args[i].type != isl_arg_child)
  25                         continue;
  26                 options = find_nested_options(args->args[i].u.child.child,
  27                             *(void **)(((char *)opt) + args->args[i].offset),
  28                             wanted);
  29                 if (options)
  30                         return options;
  31         }
  32
  33         return NULL;
  34 }
  35
  36 static struct isl_options *find_nested_isl_options(struct isl_args *args,
  37         void *opt)
  38 {
  39         return find_nested_options(args, opt, &isl_options_args);
  40 }
  41
  42 void *isl_ctx_peek_options(isl_ctx *ctx, struct isl_args *args)
  43 {
  44         if (!ctx)
  45                 return NULL;
  46         return find_nested_options(ctx->user_args, ctx->user_opt, args);
  47 }
  48
  49 isl_ctx *isl_ctx_alloc_with_options(struct isl_args *args, void *user_opt)
  50 {
  51         struct isl_ctx *ctx = NULL;
  52         struct isl_options *opt = NULL;
  53         int opt_allocated = 0;
  54
  55         if (!user_opt)
  56                 return NULL;
  57
  58         opt = find_nested_isl_options(args, user_opt);
  59         if (!opt) {
  60                 opt = isl_options_new_with_defaults();
  61                 if (!opt)
  62                         goto error;
  63                 opt_allocated = 1;
  64         }
  65
  66         ctx = isl_calloc_type(NULL, struct isl_ctx);
  67         if (!ctx)
  68                 goto error;
  69
  70         if (isl_hash_table_init(ctx, &ctx->id_table, 0))
  71                 goto error;
  72
  73         ctx->stats = isl_calloc_type(ctx, struct isl_stats);
  74         if (!ctx->stats)
  75                 goto error;
  76
  77         ctx->user_args = args;
  78         ctx->user_opt = user_opt;
  79         ctx->opt_allocated = opt_allocated;
  80         ctx->opt = opt;
  81         ctx->ref = 0;
  82
  83         isl_int_init(ctx->zero);
  84         isl_int_set_si(ctx->zero, 0);
  85
  86         isl_int_init(ctx->one);
  87         isl_int_set_si(ctx->one, 1);
  88
  89         isl_int_init(ctx->two);
  90         isl_int_set_si(ctx->two, 2);
  91
  92         isl_int_init(ctx->negone);
  93         isl_int_set_si(ctx->negone, -1);
  94
  95         isl_int_init(ctx->normalize_gcd);
  96
  97         ctx->n_cached = 0;
  98         ctx->n_miss = 0;
  99
 100         ctx->error = isl_error_none;
 101
 102         return ctx;
 103 error:
 104         isl_args_free(args, user_opt);
 105         if (opt_allocated)
 106                 isl_options_free(opt);
 107         free(ctx);
 108         return NULL;
 109 }
 110
 111 struct isl_ctx *isl_ctx_alloc()
 112 {
 113         struct isl_options *opt;
 114
 115         opt = isl_options_new_with_defaults();
 116
 117         return isl_ctx_alloc_with_options(&isl_options_args, opt);
 118 }
 119
 120 void isl_ctx_ref(struct isl_ctx *ctx)
 121 {
 122         ctx->ref++;
 123 }
 124
 125 void isl_ctx_deref(struct isl_ctx *ctx)
 126 {
 127         isl_assert(ctx, ctx->ref > 0, return);
 128         ctx->ref--;
 129 }
 130
 131 void isl_ctx_free(struct isl_ctx *ctx)
 132 {
 133         if (!ctx)
 134                 return;
 135         isl_assert(ctx, ctx->ref == 0, return);
 136         isl_hash_table_clear(&ctx->id_table);
 137         isl_blk_clear_cache(ctx);
 138         isl_int_clear(ctx->zero);
 139         isl_int_clear(ctx->one);
 140         isl_int_clear(ctx->two);
 141         isl_int_clear(ctx->negone);
 142         isl_int_clear(ctx->normalize_gcd);
 143         isl_args_free(ctx->user_args, ctx->user_opt);
 144         if (ctx->opt_allocated)
 145                 free(ctx->opt);
 146         free(ctx->stats);
 147         free(ctx);
 148 }
 149
 150 struct isl_options *isl_ctx_options(isl_ctx *ctx)
 151 {
 152         if (!ctx)
 153                 return NULL;
 154         return ctx->opt;
 155 }
 156
 157 enum isl_error isl_ctx_last_error(isl_ctx *ctx)
 158 {
 159         return ctx->error;
 160 }
 161
 162 void isl_ctx_reset_error(isl_ctx *ctx)
 163 {
 164         ctx->error = isl_error_none;
 165 }
 166
 167 void isl_ctx_set_error(isl_ctx *ctx, enum isl_error error)
 168 {
 169         if (ctx)
 170                 ctx->error = error;
 171 }
 172
 173 void isl_ctx_abort(isl_ctx *ctx)
 174 {
 175         if (ctx)
 176                 ctx->abort = 1;
 177 }
 178
 179 void isl_ctx_resume(isl_ctx *ctx)
 180 {
 181         if (ctx)
 182                 ctx->abort = 0;
 183 }
 184
 185 int isl_ctx_aborted(isl_ctx *ctx)
 186 {
 187         return ctx ? ctx->abort : -1;
 188 }
 189
 190 int isl_ctx_parse_options(isl_ctx *ctx, int argc, char **argv, unsigned flags)
 191 {
 192         if (!ctx)
 193                 return -1;
 194         return isl_args_parse(ctx->user_args, argc, argv, ctx->user_opt, flags);
 195 }