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authorsubhransu mohanty <sub.mohanty@samsung.com>2017-11-09 10:34:01 +0900
committerJean-Philippe Andre <jp.andre@samsung.com>2017-11-10 11:20:38 +0900
commitd4a2b2025bd1e7396de74c0becb09d4ecbf3b6b9 (patch)
tree31443b3f73fe8b0b53bc036c9ff01223f4ebe0ee
parentector: move gradient generation api to draw library for reuse. (diff)
downloadefl-d4a2b2025bd1e7396de74c0becb09d4ecbf3b6b9.tar.gz
evas/common: added a generic cache in evas common.
-rw-r--r--src/Makefile_Evas.am4
-rw-r--r--src/lib/evas/common/evas_common_generic_cache.c104
2 files changed, 107 insertions, 1 deletions
diff --git a/src/Makefile_Evas.am b/src/Makefile_Evas.am
index f1d0148667..408c0c7583 100644
--- a/src/Makefile_Evas.am
+++ b/src/Makefile_Evas.am
@@ -494,7 +494,9 @@ lib/evas/common/language/evas_language_utils.h \
lib/evas/common/language/evas_script_table.h \
lib/evas/common/evas_text_utils.h \
lib/evas/common/evas_font_ot.h \
-lib/evas/common/evas_font_draw.h
+lib/evas/common/evas_font_draw.h \
+lib/evas/common/evas_common_generic_cache.c
+
lib_evas_libevas_la_CPPFLAGS = -I$(top_builddir)/src/lib/efl \
-I$(top_srcdir)/src/lib/evas/canvas \
diff --git a/src/lib/evas/common/evas_common_generic_cache.c b/src/lib/evas/common/evas_common_generic_cache.c
new file mode 100644
index 0000000000..55fd6e06b2
--- /dev/null
+++ b/src/lib/evas/common/evas_common_generic_cache.c
@@ -0,0 +1,104 @@
+#include "evas_common_private.h"
+
+EAPI Generic_Cache*
+generic_cache_new(void *user_data, Generic_Cache_Free func)
+{
+ Generic_Cache *cache;
+ cache = calloc(1, sizeof(Generic_Cache));
+ cache->hash = eina_hash_int32_new(NULL);
+ cache->user_data = user_data;
+ cache->free_func = func;
+ return cache;
+}
+
+EAPI void
+generic_cache_destroy(Generic_Cache *cache)
+{
+ generic_cache_dump(cache);
+ eina_hash_free(cache->hash);
+}
+
+EAPI void
+generic_cache_dump(Generic_Cache *cache)
+{
+ Generic_Cache_Entry *entry;
+ if (cache)
+ {
+ eina_hash_free_buckets(cache->hash);
+ EINA_LIST_FREE(cache->lru_list, entry)
+ {
+ cache->free_func(cache->user_data, entry->data);
+ free(entry);
+ }
+ }
+}
+
+EAPI void
+generic_cache_set(Generic_Cache *cache, void *key, void *surface)
+{
+ Generic_Cache_Entry *entry = NULL;
+ int count;
+
+ entry = calloc(1, sizeof(Generic_Cache_Entry));
+ entry->key = key;
+ entry->data = surface;
+ entry->ref = 1;
+ eina_hash_add(cache->hash, &key, entry);
+ cache->lru_list = eina_list_prepend(cache->lru_list, entry);
+ count = eina_list_count(cache->lru_list);
+ if (count > 50)
+ {
+ entry = eina_list_data_get(eina_list_last(cache->lru_list));
+ // if its still being ref.
+ if (entry->ref) return;
+ eina_hash_del(cache->hash, &entry->key, entry);
+ cache->lru_list = eina_list_remove_list(cache->lru_list, eina_list_last(cache->lru_list));
+ cache->free_func(cache->user_data, entry->data);
+ free(entry);
+ }
+}
+
+EAPI void *
+generic_cache_get(Generic_Cache *cache, void *key)
+{
+ Generic_Cache_Entry *entry = NULL, *lru_data;
+ Eina_List *l;
+
+ entry = eina_hash_find(cache->hash, &key);
+ if (entry)
+ {
+ // update the ref
+ entry->ref += 1;
+ // promote in lru
+ EINA_LIST_FOREACH(cache->lru_list, l, lru_data)
+ {
+ if (lru_data == entry)
+ {
+ cache->lru_list = eina_list_promote_list(cache->lru_list, l);
+ break;
+ }
+ }
+ return entry->data;
+ }
+ return NULL;
+}
+
+EAPI void
+generic_cache_drop(Generic_Cache *cache, void *key)
+{
+ Generic_Cache_Entry *entry = NULL;
+
+ entry = eina_hash_find(cache->hash, &key);
+ if (entry)
+ {
+ entry->ref -= 1;
+ // if its still being ref.
+ if (entry->ref) return;
+ eina_hash_del(cache->hash, &entry->key, entry);
+ // find and remove from lru list
+ cache->lru_list = eina_list_remove(cache->lru_list, entry);
+ cache->free_func(cache->user_data, entry->data);
+ free(entry);
+ }
+}
+