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