mono/utils/mono-property-hash.c

   1 /*
   2  * mono-property-hash.c: Hash table for (object, property) pairs
   3  *
   4  * Author:
   5  *      Zoltan Varga (vargaz@gmail.com)
   6  *
   7  * (C) 2008 Novell, Inc
   8  */
   9
  10 #include "mono-property-hash.h"
  11
  12 struct _MonoPropertyHash {
  13         /* We use one hash table per property */
  14         GHashTable *hashes;
  15 };
  16
  17 MonoPropertyHash*
  18 mono_property_hash_new (void)
  19 {
  20         MonoPropertyHash *hash = g_new0 (MonoPropertyHash, 1);
  21
  22         hash->hashes = g_hash_table_new (NULL, NULL);
  23
  24         return hash;
  25 }
  26
  27 static void
  28 free_hash (gpointer key, gpointer value, gpointer user_data)
  29 {
  30         GHashTable *hash = (GHashTable*)value;
  31
  32         g_hash_table_destroy (hash);
  33 }
  34
  35 void
  36 mono_property_hash_destroy (MonoPropertyHash *hash)
  37 {
  38         g_hash_table_foreach (hash->hashes, free_hash, NULL);
  39         g_hash_table_destroy (hash->hashes);
  40
  41         g_free (hash);
  42 }
  43
  44 void
  45 mono_property_hash_insert (MonoPropertyHash *hash, gpointer object, guint32 property,
  46                                                    gpointer value)
  47 {
  48         GHashTable *prop_hash;
  49
  50         prop_hash = g_hash_table_lookup (hash->hashes, GUINT_TO_POINTER (property));
  51         if (!prop_hash) {
  52                 // FIXME: Maybe use aligned_hash
  53                 prop_hash = g_hash_table_new (NULL, NULL);
  54                 g_hash_table_insert (hash->hashes, GUINT_TO_POINTER (property), prop_hash);
  55         }
  56
  57         g_hash_table_insert (prop_hash, object, value);
  58 }
  59
  60 static void
  61 remove_object (gpointer key, gpointer value, gpointer user_data)
  62 {
  63         GHashTable *prop_hash = (GHashTable*)value;
  64
  65         g_hash_table_remove (prop_hash, user_data);
  66 }
  67
  68 void
  69 mono_property_hash_remove_object (MonoPropertyHash *hash, gpointer object)
  70 {
  71         g_hash_table_foreach (hash->hashes, remove_object, object);
  72 }
  73
  74 gpointer
  75 mono_property_hash_lookup (MonoPropertyHash *hash, gpointer object, guint32 property)
  76 {
  77         GHashTable *prop_hash;
  78
  79         prop_hash = g_hash_table_lookup (hash->hashes, GUINT_TO_POINTER (property));
  80         if (!prop_hash)
  81                 return NULL;
  82         return g_hash_table_lookup (prop_hash, object);
  83 }
  84