translate_cache.c File Reference

Include dependency graph for translate_cache.c:

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Data Structures
struct	translate_cache
Functions
struct translate_cache *	translate_cache_create (void)
static void	delete_translates (struct translate_cache *cache)
void	translate_cache_destroy (struct translate_cache *cache)
static unsigned	translate_hash_key_size (struct translate_key *key)
static unsigned	create_key (struct translate_key *key)
struct translate *	translate_cache_find (struct translate_cache *cache, struct translate_key *key)
	Will try to find a translate structure matched by the given key.

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Function Documentation

static unsigned create_key

(

struct translate_key *

key

)

[static]

Definition at line 76 of file translate_cache.c.

References cso_construct_key(), hash_key(), and translate_hash_key_size().

{
   unsigned hash_key;
   unsigned size = translate_hash_key_size(key);
   /*debug_printf("key size = %d, (els = %d)\n",
     size, key->nr_elements);*/
   hash_key = cso_construct_key(key, size);
   return hash_key;
}

static void delete_translates

(

struct translate_cache *

cache

)

[static]

Definition at line 48 of file translate_cache.c.

References cso_hash_first_node(), cso_hash_iter_data(), cso_hash_iter_is_null(), cso_hash_iter_next(), translate_cache::hash, and translate::release.

{
   struct cso_hash *hash = cache->hash;
   struct cso_hash_iter iter = cso_hash_first_node(hash);
   while (!cso_hash_iter_is_null(iter)) {
      struct translate *state = (struct translate*)cso_hash_iter_data(iter);
      iter = cso_hash_iter_next(iter);
      if (state) {
         state->release(state);
      }
   }
}

struct translate_cache* translate_cache_create

(

void

)

[read]

Definition at line 40 of file translate_cache.c.

References cso_hash_create(), translate_cache::hash, and MALLOC_STRUCT.

{
   struct translate_cache *cache = MALLOC_STRUCT(translate_cache);
   cache->hash = cso_hash_create();
   return cache;
}

void translate_cache_destroy

(

struct translate_cache *

cache

)

Definition at line 61 of file translate_cache.c.

References cso_hash_delete(), delete_translates(), FREE, and translate_cache::hash.

{
   delete_translates(cache);
   cso_hash_delete(cache->hash);
   FREE(cache);
}

struct translate* translate_cache_find	(	struct translate_cache *	cache,
		struct translate_key *	key
	)			[read]

Will try to find a translate structure matched by the given key.

If such a structure doesn't exist in the cache the function will automatically create it, insert it in the cache and return the created version.

Definition at line 86 of file translate_cache.c.

References create_key(), cso_hash_find_data_from_template(), cso_hash_insert(), translate_cache::hash, hash_key(), and translate_create().

{
   unsigned hash_key = create_key(key);
   struct translate *translate = (struct translate*)
      cso_hash_find_data_from_template(cache->hash,
                                       hash_key,
                                       key, sizeof(*key));

   if (!translate) {
      /* create/insert */
      translate = translate_create(key);
      cso_hash_insert(cache->hash, hash_key, translate);
   }

   return translate;
}

static unsigned translate_hash_key_size

(

struct translate_key *

key

)

[static]

Definition at line 69 of file translate_cache.c.

References translate_key::nr_elements, and PIPE_MAX_ATTRIBS.

{
   unsigned size = sizeof(struct translate_key) -
                   sizeof(struct translate_element) * (PIPE_MAX_ATTRIBS - key->nr_elements);
   return size;
}

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