mono/sgen/sgen-hash-table.h

   1 /**
   2  * \file
   3  */
   4
   5 #ifndef __MONO_SGENHASHTABLE_H__
   6 #define __MONO_SGENHASHTABLE_H__
   7
   8 #include "config.h"
   9
  10 #ifdef HAVE_SGEN_GC
  11
  12 #include <glib.h>
  13
  14 /* hash tables */
  15
  16 typedef struct _SgenHashTableEntry SgenHashTableEntry;
  17 struct _SgenHashTableEntry {
  18         SgenHashTableEntry *next;
  19         gpointer key;
  20         char data [MONO_ZERO_LEN_ARRAY]; /* data is pointer-aligned */
  21 };
  22
  23 typedef struct {
  24         int table_mem_type;
  25         int entry_mem_type;
  26         size_t data_size;
  27         GHashFunc hash_func;
  28         GEqualFunc equal_func;
  29         SgenHashTableEntry **table;
  30         guint size;
  31         guint num_entries;
  32 } SgenHashTable;
  33
  34 #define SGEN_HASH_TABLE_INIT(table_type,entry_type,data_size,hash_func,equal_func)      { (table_type), (entry_type), (data_size), (hash_func), (equal_func), NULL, 0, 0 }
  35 #define SGEN_HASH_TABLE_ENTRY_SIZE(data_size)                   ((data_size) + sizeof (SgenHashTableEntry*) + sizeof (gpointer))
  36
  37 gpointer sgen_hash_table_lookup (SgenHashTable *table, gpointer key);
  38 gboolean sgen_hash_table_replace (SgenHashTable *table, gpointer key, gpointer new_value, gpointer old_value);
  39 gboolean sgen_hash_table_set_value (SgenHashTable *table, gpointer key, gpointer new_value, gpointer old_value);
  40 gboolean sgen_hash_table_set_key (SgenHashTable *hash_table, gpointer old_key, gpointer new_key);
  41 gboolean sgen_hash_table_remove (SgenHashTable *table, gpointer key, gpointer data_return);
  42
  43 void sgen_hash_table_clean (SgenHashTable *table);
  44
  45 void sgen_init_hash_table (void);
  46
  47 #define sgen_hash_table_num_entries(h)  ((h)->num_entries)
  48
  49 #define sgen_hash_table_key_for_value_pointer(v)        ((GCObject *)(((SgenHashTableEntry*)((char*)(v) - G_STRUCT_OFFSET (SgenHashTableEntry, data)))->key))
  50
  51 #define SGEN_HASH_TABLE_FOREACH(h,tk,k,tv,v) do {                               \
  52                 SgenHashTable *__hash_table = (h);                      \
  53                 SgenHashTableEntry **__table = __hash_table->table;     \
  54                 guint __i;                                              \
  55                 for (__i = 0; __i < (h)->size; ++__i) {                 \
  56                         SgenHashTableEntry **__iter, **__next;                  \
  57                         for (__iter = &__table [__i]; *__iter; __iter = __next) {       \
  58                                 SgenHashTableEntry *__entry = *__iter;  \
  59                                 __next = &__entry->next;        \
  60                                 (k) = (tk)__entry->key;                 \
  61                                 (v) = (tv)__entry->data;
  62
  63 /* The loop must be continue'd after using this! */
  64 #define SGEN_HASH_TABLE_FOREACH_REMOVE(free)    do {                    \
  65                 *__iter = *__next;      \
  66                 __next = __iter;        \
  67                 --__hash_table->num_entries;                            \
  68                 if ((free))                                             \
  69                         sgen_free_internal (__entry, __hash_table->entry_mem_type); \
  70         } while (0)
  71
  72 #define SGEN_HASH_TABLE_FOREACH_SET_KEY(k)      ((__entry)->key = (k))
  73
  74 #define SGEN_HASH_TABLE_FOREACH_END                                     \
  75                         }                                               \
  76                 }                                                       \
  77         } while (0)
  78
  79 #endif
  80
  81 #endif