LCOV - code coverage report
Current view: top level - metalib_isl - isl_id.c (source / functions) Hit Total Coverage
Test: 2018-10-31_point_maint_greina16.lcov Lines: 12 116 10.3 %
Date: 2018-11-01 11:27:00 Functions: 3 14 21.4 %

          Line data    Source code
       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 <string.h>
      11             : #include <isl_ctx_private.h>
      12             : #include <isl_id_private.h>
      13             : 
      14             : #undef BASE
      15             : #define BASE id
      16             : 
      17             : #include <isl_list_templ.c>
      18             : 
      19             : /* A special, static isl_id to use as domains (and ranges)
      20             :  * of sets and parameters domains.
      21             :  * The user should never get a hold on this isl_id.
      22             :  */
      23             : isl_id isl_id_none = {
      24             :         .ref = -1,
      25             :         .ctx = NULL,
      26             :         .name = "#none",
      27             :         .user = NULL
      28             : };
      29             : 
      30           0 : isl_ctx *isl_id_get_ctx(__isl_keep isl_id *id)
      31             : {
      32           0 :         return id ? id->ctx : NULL;
      33             : }
      34             : 
      35           0 : void *isl_id_get_user(__isl_keep isl_id *id)
      36             : {
      37           0 :         return id ? id->user : NULL;
      38             : }
      39             : 
      40           0 : const char *isl_id_get_name(__isl_keep isl_id *id)
      41             : {
      42           0 :         return id ? id->name : NULL;
      43             : }
      44             : 
      45           0 : static __isl_give isl_id *id_alloc(isl_ctx *ctx, const char *name, void *user)
      46             : {
      47           0 :         const char *copy = name ? strdup(name) : NULL;
      48             :         isl_id *id;
      49             : 
      50           0 :         if (name && !copy)
      51           0 :                 return NULL;
      52           0 :         id = isl_calloc_type(ctx, struct isl_id);
      53           0 :         if (!id)
      54           0 :                 goto error;
      55             : 
      56           0 :         id->ctx = ctx;
      57           0 :         isl_ctx_ref(id->ctx);
      58           0 :         id->ref = 1;
      59           0 :         id->name = copy;
      60           0 :         id->user = user;
      61             : 
      62           0 :         id->hash = isl_hash_init();
      63           0 :         if (name)
      64           0 :                 id->hash = isl_hash_string(id->hash, name);
      65             :         else
      66           0 :                 id->hash = isl_hash_builtin(id->hash, user);
      67             : 
      68           0 :         return id;
      69             : error:
      70           0 :         free((char *)copy);
      71           0 :         return NULL;
      72             : }
      73             : 
      74           0 : uint32_t isl_id_get_hash(__isl_keep isl_id *id)
      75             : {
      76           0 :         return id ? id->hash : 0;
      77             : }
      78             : 
      79             : struct isl_name_and_user {
      80             :         const char *name;
      81             :         void *user;
      82             : };
      83             : 
      84           0 : static int isl_id_has_name_and_user(const void *entry, const void *val)
      85             : {
      86           0 :         isl_id *id = (isl_id *)entry;
      87           0 :         struct isl_name_and_user *nu = (struct isl_name_and_user *) val;
      88             : 
      89           0 :         if (id->user != nu->user)
      90           0 :                 return 0;
      91           0 :         if (id->name == nu->name)
      92           0 :                 return 1;
      93           0 :         if (!id->name || !nu->name)
      94           0 :                 return 0;
      95             : 
      96           0 :         return !strcmp(id->name, nu->name);
      97             : }
      98             : 
      99           0 : __isl_give isl_id *isl_id_alloc(isl_ctx *ctx, const char *name, void *user)
     100             : {
     101             :         struct isl_hash_table_entry *entry;
     102             :         uint32_t id_hash;
     103           0 :         struct isl_name_and_user nu = { name, user };
     104             : 
     105           0 :         if (!ctx)
     106           0 :                 return NULL;
     107             : 
     108           0 :         id_hash = isl_hash_init();
     109           0 :         if (name)
     110           0 :                 id_hash = isl_hash_string(id_hash, name);
     111             :         else
     112           0 :                 id_hash = isl_hash_builtin(id_hash, user);
     113           0 :         entry = isl_hash_table_find(ctx, &ctx->id_table, id_hash,
     114             :                                         isl_id_has_name_and_user, &nu, 1);
     115           0 :         if (!entry)
     116           0 :                 return NULL;
     117           0 :         if (entry->data)
     118           0 :                 return isl_id_copy(entry->data);
     119           0 :         entry->data = id_alloc(ctx, name, user);
     120           0 :         if (!entry->data)
     121           0 :                 ctx->id_table.n--;
     122           0 :         return entry->data;
     123             : }
     124             : 
     125             : /* If the id has a negative refcount, then it is a static isl_id
     126             :  * which should not be changed.
     127             :  */
     128    57837887 : __isl_give isl_id *isl_id_copy(isl_id *id)
     129             : {
     130    57837887 :         if (!id)
     131           0 :                 return NULL;
     132             : 
     133    57837887 :         if (id->ref < 0)
     134    57837887 :                 return id;
     135             : 
     136           0 :         id->ref++;
     137           0 :         return id;
     138             : }
     139             : 
     140             : /* Compare two isl_ids.
     141             :  *
     142             :  * The order is fairly arbitrary.  We do keep the comparison of
     143             :  * the user pointers as a last resort since these pointer values
     144             :  * may not be stable across different systems or even different runs.
     145             :  */
     146    94961874 : int isl_id_cmp(__isl_keep isl_id *id1, __isl_keep isl_id *id2)
     147             : {
     148    94961874 :         if (id1 == id2)
     149    94961874 :                 return 0;
     150           0 :         if (!id1)
     151           0 :                 return -1;
     152           0 :         if (!id2)
     153           0 :                 return 1;
     154           0 :         if (!id1->name != !id2->name)
     155           0 :                 return !id1->name - !id2->name;
     156           0 :         if (id1->name) {
     157           0 :                 int cmp = strcmp(id1->name, id2->name);
     158           0 :                 if (cmp != 0)
     159           0 :                         return cmp;
     160             :         }
     161           0 :         if (id1->user < id2->user)
     162           0 :                 return -1;
     163             :         else
     164           0 :                 return 1;
     165             : }
     166             : 
     167           0 : static int isl_id_eq(const void *entry, const void *name)
     168             : {
     169           0 :         return entry == name;
     170             : }
     171             : 
     172           0 : uint32_t isl_hash_id(uint32_t hash, __isl_keep isl_id *id)
     173             : {
     174           0 :         if (id)
     175           0 :                 isl_hash_hash(hash, id->hash);
     176             : 
     177           0 :         return hash;
     178             : }
     179             : 
     180             : /* Replace the free_user callback by "free_user".
     181             :  */
     182           0 : __isl_give isl_id *isl_id_set_free_user(__isl_take isl_id *id,
     183             :         void (*free_user)(void *user))
     184             : {
     185           0 :         if (!id)
     186           0 :                 return NULL;
     187             : 
     188           0 :         id->free_user = free_user;
     189             : 
     190           0 :         return id;
     191             : }
     192             : 
     193             : /* If the id has a negative refcount, then it is a static isl_id
     194             :  * and should not be freed.
     195             :  */
     196 29861206502 : __isl_null isl_id *isl_id_free(__isl_take isl_id *id)
     197             : {
     198             :         struct isl_hash_table_entry *entry;
     199             : 
     200 29861206502 :         if (!id)
     201 27831656605 :                 return NULL;
     202             : 
     203  2029549897 :         if (id->ref < 0)
     204  2029549897 :                 return NULL;
     205             : 
     206           0 :         if (--id->ref > 0)
     207           0 :                 return NULL;
     208             : 
     209           0 :         entry = isl_hash_table_find(id->ctx, &id->ctx->id_table, id->hash,
     210             :                                         isl_id_eq, id, 0);
     211           0 :         if (!entry)
     212           0 :                 isl_die(id->ctx, isl_error_unknown,
     213             :                         "unable to find id", (void)0);
     214             :         else
     215           0 :                 isl_hash_table_remove(id->ctx, &id->ctx->id_table, entry);
     216             : 
     217           0 :         if (id->free_user)
     218           0 :                 id->free_user(id->user);
     219             : 
     220           0 :         free((char *)id->name);
     221           0 :         isl_ctx_deref(id->ctx);
     222           0 :         free(id);
     223             : 
     224           0 :         return NULL;
     225             : }
     226             : 
     227           0 : __isl_give isl_printer *isl_printer_print_id(__isl_take isl_printer *p,
     228             :         __isl_keep isl_id *id)
     229             : {
     230           0 :         if (!id)
     231           0 :                 goto error;
     232             : 
     233           0 :         if (id->name)
     234           0 :                 p = isl_printer_print_str(p, id->name);
     235           0 :         if (id->user) {
     236             :                 char buffer[50];
     237           0 :                 snprintf(buffer, sizeof(buffer), "@%p", id->user);
     238           0 :                 p = isl_printer_print_str(p, buffer);
     239             :         }
     240           0 :         return p;
     241             : error:
     242           0 :         isl_printer_free(p);
     243           0 :         return NULL;
     244             : }

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