isl_ctx.c

   1 /*
   2  * Copyright 2008-2009 Katholieke Universiteit Leuven
   3  *
   4  * Use of this software is governed by the MIT 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_private.h>
  13
  14 void isl_handle_error(isl_ctx *ctx, enum isl_error error, const char *msg,
  15         const char *file, int line)
  16 {
  17         if (!ctx)
  18                 return;
  19
  20         isl_ctx_set_error(ctx, error);
  21
  22         switch (ctx->opt->on_error) {
  23         case ISL_ON_ERROR_WARN:
  24                 fprintf(stderr, "%s:%d: %s\n", file, line, msg);
  25                 return;
  26         case ISL_ON_ERROR_CONTINUE:
  27                 return;
  28         case ISL_ON_ERROR_ABORT:
  29                 fprintf(stderr, "%s:%d: %s\n", file, line, msg);
  30                 abort();
  31                 return;
  32         }
  33 }
  34
  35 static struct isl_options *find_nested_options(struct isl_args *args,
  36         void *opt, struct isl_args *wanted)
  37 {
  38         int i;
  39         struct isl_options *options;
  40
  41         if (args == wanted)
  42                 return opt;
  43
  44         for (i = 0; args->args[i].type != isl_arg_end; ++i) {
  45                 if (args->args[i].type != isl_arg_child)
  46                         continue;
  47                 options = find_nested_options(args->args[i].u.child.child,
  48                             *(void **)(((char *)opt) + args->args[i].offset),
  49                             wanted);
  50                 if (options)
  51                         return options;
  52         }
  53
  54         return NULL;
  55 }
  56
  57 static struct isl_options *find_nested_isl_options(struct isl_args *args,
  58         void *opt)
  59 {
  60         return find_nested_options(args, opt, &isl_options_args);
  61 }
  62
  63 void *isl_ctx_peek_options(isl_ctx *ctx, struct isl_args *args)
  64 {
  65         if (!ctx)
  66                 return NULL;
  67         if (args == &isl_options_args)
  68                 return ctx->opt;
  69         return find_nested_options(ctx->user_args, ctx->user_opt, args);
  70 }
  71
  72 isl_ctx *isl_ctx_alloc_with_options(struct isl_args *args, void *user_opt)
  73 {
  74         struct isl_ctx *ctx = NULL;
  75         struct isl_options *opt = NULL;
  76         int opt_allocated = 0;
  77
  78         if (!user_opt)
  79                 return NULL;
  80
  81         opt = find_nested_isl_options(args, user_opt);
  82         if (!opt) {
  83                 opt = isl_options_new_with_defaults();
  84                 if (!opt)
  85                         goto error;
  86                 opt_allocated = 1;
  87         }
  88
  89         ctx = isl_calloc_type(NULL, struct isl_ctx);
  90         if (!ctx)
  91                 goto error;
  92
  93         if (isl_hash_table_init(ctx, &ctx->id_table, 0))
  94                 goto error;
  95
  96         ctx->stats = isl_calloc_type(ctx, struct isl_stats);
  97         if (!ctx->stats)
  98                 goto error;
  99
 100         ctx->user_args = args;
 101         ctx->user_opt = user_opt;
 102         ctx->opt_allocated = opt_allocated;
 103         ctx->opt = opt;
 104         ctx->ref = 0;
 105
 106         isl_int_init(ctx->zero);
 107         isl_int_set_si(ctx->zero, 0);
 108
 109         isl_int_init(ctx->one);
 110         isl_int_set_si(ctx->one, 1);
 111
 112         isl_int_init(ctx->two);
 113         isl_int_set_si(ctx->two, 2);
 114
 115         isl_int_init(ctx->negone);
 116         isl_int_set_si(ctx->negone, -1);
 117
 118         isl_int_init(ctx->normalize_gcd);
 119
 120         ctx->n_cached = 0;
 121         ctx->n_miss = 0;
 122
 123         ctx->error = isl_error_none;
 124
 125         return ctx;
 126 error:
 127         isl_args_free(args, user_opt);
 128         if (opt_allocated)
 129                 isl_options_free(opt);
 130         free(ctx);
 131         return NULL;
 132 }
 133
 134 struct isl_ctx *isl_ctx_alloc()
 135 {
 136         struct isl_options *opt;
 137
 138         opt = isl_options_new_with_defaults();
 139
 140         return isl_ctx_alloc_with_options(&isl_options_args, opt);
 141 }
 142
 143 void isl_ctx_ref(struct isl_ctx *ctx)
 144 {
 145         ctx->ref++;
 146 }
 147
 148 void isl_ctx_deref(struct isl_ctx *ctx)
 149 {
 150         isl_assert(ctx, ctx->ref > 0, return);
 151         ctx->ref--;
 152 }
 153
 154 void isl_ctx_free(struct isl_ctx *ctx)
 155 {
 156         if (!ctx)
 157                 return;
 158         if (ctx->ref != 0)
 159                 isl_die(ctx, isl_error_invalid,
 160                         "isl_ctx freed, but some objects still reference it",
 161                         return);
 162
 163         isl_hash_table_clear(&ctx->id_table);
 164         isl_blk_clear_cache(ctx);
 165         isl_int_clear(ctx->zero);
 166         isl_int_clear(ctx->one);
 167         isl_int_clear(ctx->two);
 168         isl_int_clear(ctx->negone);
 169         isl_int_clear(ctx->normalize_gcd);
 170         isl_args_free(ctx->user_args, ctx->user_opt);
 171         if (ctx->opt_allocated)
 172                 free(ctx->opt);
 173         free(ctx->stats);
 174         free(ctx);
 175 }
 176
 177 struct isl_options *isl_ctx_options(isl_ctx *ctx)
 178 {
 179         if (!ctx)
 180                 return NULL;
 181         return ctx->opt;
 182 }
 183
 184 enum isl_error isl_ctx_last_error(isl_ctx *ctx)
 185 {
 186         return ctx->error;
 187 }
 188
 189 void isl_ctx_reset_error(isl_ctx *ctx)
 190 {
 191         ctx->error = isl_error_none;
 192 }
 193
 194 void isl_ctx_set_error(isl_ctx *ctx, enum isl_error error)
 195 {
 196         if (ctx)
 197                 ctx->error = error;
 198 }
 199
 200 void isl_ctx_abort(isl_ctx *ctx)
 201 {
 202         if (ctx)
 203                 ctx->abort = 1;
 204 }
 205
 206 void isl_ctx_resume(isl_ctx *ctx)
 207 {
 208         if (ctx)
 209                 ctx->abort = 0;
 210 }
 211
 212 int isl_ctx_aborted(isl_ctx *ctx)
 213 {
 214         return ctx ? ctx->abort : -1;
 215 }
 216
 217 int isl_ctx_parse_options(isl_ctx *ctx, int argc, char **argv, unsigned flags)
 218 {
 219         if (!ctx)
 220                 return -1;
 221         return isl_args_parse(ctx->user_args, argc, argv, ctx->user_opt, flags);
 222 }