forked from minhngoc25a/freetype2
oops, forgot to add new file and remove old one in src/cache
This commit is contained in:
David Turner
parent
7ebd63726b
commit
2cee961654
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@ -0,0 +1,598 @@
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#include <ft2build.h>
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#include FT_CACHE_MANAGER_H
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#include FT_INTERNAL_OBJECTS_H
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#include FT_INTERNAL_DEBUG_H
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#include "ftcerror.h"
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/*************************************************************************/
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/*************************************************************************/
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/***** *****/
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/***** CACHE NODE DEFINITIONS *****/
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/***** *****/
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/*************************************************************************/
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/*************************************************************************/
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FT_EXPORT_DEF(void)
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ftc_node_done( FTC_Node node,
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FTC_Cache cache )
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{
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FTC_Family family;
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FTC_FamilyEntry entry;
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entry = cache->manager->families.entries + node->fam_index;
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family = entry->family;
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/* remove from parent set table - eventually destroy the set */
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if ( --family->num_nodes <= 0 )
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FT_LruList_Remove( cache->families, (FT_LruNode) family );
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}
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/* add a new node to the head of the manager's circular MRU list */
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static void
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ftc_node_mru_link( FTC_Node node,
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FTC_Manager manager )
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{
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FTC_Node first = manager->nodes_list;
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if ( first )
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{
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node->mru_prev = first->mru_prev;
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node->mru_next = first;
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first->mru_prev->mru_next = node;
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first->mru_prev = node;
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}
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else
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{
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node->mru_next = node;
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node->mru_prev = node;
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}
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manager->nodes_list = node;
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manager->num_nodes++;
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}
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/* remove a node from the manager's MRU list */
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static void
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ftc_node_mru_unlink( FTC_Node node,
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FTC_Manager manager )
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{
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FTC_Node prev = node->mru_prev;
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FTC_Node next = node->mru_next;
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FTC_Node first = manager->nodes_list;
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prev->mru_next = next;
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next->mru_prev = prev;
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if ( node->mru_next == first )
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{
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/* this is the last node in the list; update its head pointer */
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if ( node == first )
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manager->nodes_list = NULL;
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else
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first->mru_prev = prev;
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}
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node->mru_next = NULL;
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node->mru_prev = NULL;
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manager->num_nodes--;
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}
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/* move a node to the head of the manager's MRU list */
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static void
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ftc_node_mru_up( FTC_Node node,
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FTC_Manager manager )
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{
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FTC_Node first = manager->nodes_list;
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if ( node != first )
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{
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ftc_node_mru_unlink( node, manager );
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ftc_node_mru_link( node, manager );
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}
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}
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/* remove a node from its cache's hash table */
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static void
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ftc_node_hash_unlink( FTC_Node node,
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FTC_Cache cache )
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{
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FTC_Node *pnode = cache->buckets + ( node->hash % cache->size );
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for (;;)
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{
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if ( *pnode == NULL )
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{
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FT_ERROR(( "FreeType.cache.hash_unlink: unknown node!\n" ));
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return;
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}
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if ( *pnode == node )
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{
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*pnode = node->link;
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node->link = NULL;
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cache->nodes--;
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return;
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}
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pnode = &(*pnode)->link;
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}
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}
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/* add a node to the "top" of its cache's hash table */
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static void
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ftc_node_hash_link( FTC_Node node,
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FTC_Cache cache )
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{
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FTC_Node *pnode = cache->buckets + ( node->hash % cache->size );
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node->link = *pnode;
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*pnode = node;
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cache->nodes++;
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}
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/* remove a node from the cache manager */
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FT_LOCAL_DEF void
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ftc_node_destroy( FTC_Node node,
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FTC_Manager manager )
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{
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FT_Memory memory = manager->library->memory;
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FTC_Cache cache;
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FTC_FamilyEntry entry;
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FTC_Cache_Class clazz;
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#ifdef FT_DEBUG_ERROR
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/* find node's cache */
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if ( node->fam_index >= manager->families.count )
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{
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FT_ERROR(( "FreeType.cache.node_destroy: invalid node handle\n" ));
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return;
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}
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#endif
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entry = manager->families.entries + node->fam_index;
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cache = entry->cache;
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#ifdef FT_DEBUG_ERROR
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if ( cache == NULL )
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{
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FT_ERROR(( "FreeType.cache.node_destroy: invalid node handle\n" ));
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return;
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}
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#endif
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clazz = cache->clazz;
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manager->cur_weight -= clazz->node_weight( node, cache );
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/* remove node from mru list */
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ftc_node_mru_unlink( node, manager );
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/* remove node from cache's hash table */
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ftc_node_hash_unlink( node, cache );
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/* now finalize it */
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if ( clazz->node_done )
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clazz->node_done( node, cache );
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FREE( node );
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/* check, just in case of general corruption :-) */
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if ( manager->num_nodes <= 0 )
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FT_ERROR(( "FTC_Manager_Compress: Invalid cache node count! = %d\n",
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manager->num_nodes ));
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}
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/*************************************************************************/
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/*************************************************************************/
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/***** *****/
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/***** CACHE FAMILY DEFINITIONS *****/
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/***** *****/
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/*************************************************************************/
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/*************************************************************************/
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FT_EXPORT_DEF(FT_Error)
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ftc_family_init( FTC_Family family,
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FTC_Query query,
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FTC_Cache cache )
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{
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FT_Error error;
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FTC_Manager manager = cache->manager;
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FT_Memory memory = manager->library->memory;
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FTC_FamilyEntry entry;
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family->cache = cache;
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family->num_nodes = 0;
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/* now add to manager's family table */
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error = ftc_family_table_alloc( &manager->families, memory, &entry );
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if (!error)
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{
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entry->cache = cache;
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entry->family = family;
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family->fam_index = entry->index;
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query->family = family; /* save family in query */
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}
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return error;
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}
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FT_EXPORT_DEF(void)
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ftc_family_done( FTC_Family family )
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{
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FTC_Manager manager = family->cache->manager;
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/* remove from manager's family table */
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ftc_family_table_free( &manager->families, family->fam_index );
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}
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/*************************************************************************/
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/*************************************************************************/
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/***** *****/
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/***** ABSTRACT CACHE CLASS *****/
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/***** *****/
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/*************************************************************************/
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/*************************************************************************/
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#define FTC_PRIMES_MIN 7
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#define FTC_PRIMES_MAX 13845163
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static const FT_UInt ftc_primes[] =
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{
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7,
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11,
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19,
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37,
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73,
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109,
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163,
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251,
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367,
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557,
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823,
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1237,
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1861,
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2777,
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4177,
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6247,
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9371,
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14057,
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21089,
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31627,
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47431,
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71143,
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106721,
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160073,
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240101,
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360163,
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540217,
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810343,
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1215497,
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1823231,
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2734867,
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4102283,
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6153409,
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9230113,
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13845163,
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};
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static FT_UFast
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ftc_prime_closest( FT_UFast num )
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{
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FT_UInt i;
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for ( i = 0; i < sizeof ( ftc_primes ) / sizeof ( ftc_primes[0] ); i++ )
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if ( ftc_primes[i] > num )
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return ftc_primes[i];
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return FTC_PRIMES_MAX;
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}
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#define FTC_CACHE_RESIZE_TEST( c ) \
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( (c)->nodes*3 < (c)->size || \
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(c)->size*3 < (c)->nodes )
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static void
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ftc_cache_resize( FTC_Cache cache )
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{
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FT_UFast new_size;
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new_size = ftc_prime_closest( cache->nodes );
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if ( new_size != cache->size )
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{
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FT_Memory memory = cache->memory;
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FT_Error error;
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FTC_Node* new_buckets ;
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FT_ULong i;
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/* no need to report an error, we'll simply keep using the same */
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/* buckets number / size */
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if ( ALLOC_ARRAY( new_buckets, new_size, FTC_Node ) )
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return;
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for ( i = 0; i < cache->size; i++ )
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{
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FTC_Node node, next, *pnode;
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FT_UFast hash;
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node = cache->buckets[i];
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while ( node )
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{
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next = node->link;
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hash = node->hash % new_size;
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pnode = new_buckets + hash;
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node->link = pnode[0];
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pnode[0] = node;
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node = next;
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}
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}
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if ( cache->buckets )
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FREE( cache->buckets );
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cache->buckets = new_buckets;
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cache->size = new_size;
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}
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}
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FT_EXPORT_DEF( FT_Error )
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ftc_cache_init( FTC_Cache cache )
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{
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FT_Memory memory = cache->memory;
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FTC_Cache_Class clazz = cache->clazz;
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FT_Error error;
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cache->nodes = 0;
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cache->size = FTC_PRIMES_MIN;
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if ( ALLOC_ARRAY( cache->buckets, cache->size, FTC_Node ) )
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goto Exit;
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/* now, initialize the lru list of families for this cache */
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if ( clazz->family_size > 0 )
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{
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FT_LruList_ClassRec* lru_class = &cache->family_class;
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lru_class->list_size = sizeof( FT_LruListRec );
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lru_class->list_init = NULL;
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lru_class->list_done = NULL;
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lru_class->node_size = clazz->family_size;
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lru_class->node_init = (FT_LruNode_InitFunc) clazz->family_init;
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lru_class->node_done = (FT_LruNode_DoneFunc) clazz->family_done;
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lru_class->node_flush = (FT_LruNode_FlushFunc) NULL;
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lru_class->node_compare = (FT_LruNode_CompareFunc) clazz->family_compare;
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error = FT_LruList_New( (FT_LruList_Class) lru_class,
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0, /* max items == 0 => unbounded list */
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cache,
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memory,
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&cache->families );
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if (error)
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FREE( cache->buckets );
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}
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Exit:
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return error;
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}
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FT_EXPORT_DEF(void)
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ftc_cache_clear( FTC_Cache cache )
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{
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if ( cache )
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{
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FT_Memory memory = cache->memory;
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FTC_Cache_Class clazz = cache->clazz;
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FTC_Manager manager = cache->manager;
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FT_UFast i;
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for ( i = 0; i < cache->size; i++ )
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{
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FTC_Node *pnode = cache->buckets + i, next, node = *pnode;
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while ( node )
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{
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next = node->link;
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node->link = NULL;
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/* remove node from mru list */
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ftc_node_mru_unlink( node, manager );
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/* now finalize it */
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manager->cur_weight -= clazz->node_weight( node, cache );
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if ( clazz->node_done )
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clazz->node_done( node, cache );
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FREE( node );
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node = next;
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}
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cache->buckets[i] = NULL;
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}
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cache->nodes = 0;
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/* destroy the families */
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if ( cache->families )
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FT_LruList_Reset( cache->families );
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}
|
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}
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|
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FT_EXPORT_DEF( void )
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ftc_cache_done( FTC_Cache cache )
|
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{
|
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if ( cache )
|
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{
|
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FT_Memory memory = cache->memory;
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ftc_cache_clear( cache );
|
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|
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FREE( cache->buckets );
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cache->size = 0;
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if ( cache->families )
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{
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FT_LruList_Destroy( cache->families );
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cache->families = NULL;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
|
||||
/* Look up a node in "top" of its cache's hash table. */
|
||||
/* If not found, create a new node. */
|
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/* */
|
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FT_EXPORT_DEF(FT_Error)
|
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ftc_cache_lookup( FTC_Cache cache,
|
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FTC_Query query,
|
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FTC_Node *anode )
|
||||
{
|
||||
FT_Error error;
|
||||
FT_LruNode lru;
|
||||
|
||||
|
||||
/* some argument checks are delayed to ftc_glyph_cache_lookup */
|
||||
if ( !cache || !query || !anode )
|
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return FTC_Err_Invalid_Argument;
|
||||
|
||||
*anode = NULL;
|
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|
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query->hash = 0;
|
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query->family = NULL;
|
||||
|
||||
error = FT_LruList_Lookup( cache->families, query, &lru );
|
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if (!error)
|
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{
|
||||
FTC_Family family = (FTC_Family) lru;
|
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FT_UFast hash = query->hash;
|
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FTC_Node* bucket = cache->buckets + (hash % cache->size);
|
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|
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if ( query->family != family ||
|
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family->fam_index >= cache->manager->families.size )
|
||||
{
|
||||
FT_ERROR(( "%s: invalid query (bad 'family' field)\n",
|
||||
"FreeType.cache.lookup" ));
|
||||
return FT_Err_Invalid_Argument;
|
||||
}
|
||||
|
||||
if ( *bucket )
|
||||
{
|
||||
FTC_Node* pnode = bucket;
|
||||
FTC_Node_CompareFunc compare = cache->clazz->node_compare;
|
||||
|
||||
for ( ;; )
|
||||
{
|
||||
FTC_Node node;
|
||||
|
||||
node = *pnode;
|
||||
if ( node == NULL )
|
||||
break;
|
||||
|
||||
if ( (FT_UInt)node->fam_index == family->fam_index &&
|
||||
compare( node, query, cache ) )
|
||||
{
|
||||
/* move to head of bucket list */
|
||||
if ( pnode != bucket )
|
||||
{
|
||||
*pnode = node->link;
|
||||
node->link = *bucket;
|
||||
*bucket = node;
|
||||
}
|
||||
|
||||
/* move to head of MRU list */
|
||||
if ( node != cache->manager->nodes_list )
|
||||
ftc_node_mru_up( node, cache->manager );
|
||||
|
||||
*anode = node;
|
||||
goto Exit;
|
||||
}
|
||||
|
||||
pnode = &(*pnode)->link;
|
||||
}
|
||||
}
|
||||
|
||||
/* didn't find a node, create a new one */
|
||||
{
|
||||
FTC_Cache_Class clazz = cache->clazz;
|
||||
FTC_Manager manager = cache->manager;
|
||||
FT_Memory memory = cache->memory;
|
||||
FTC_Node node;
|
||||
|
||||
|
||||
if ( ALLOC( node, clazz->node_size ) )
|
||||
goto Exit;
|
||||
|
||||
/* node initializer must set 'hash' field */
|
||||
node->fam_index = (FT_UShort) family->fam_index;
|
||||
node->ref_count = 0;
|
||||
|
||||
error = clazz->node_init( node, query, cache );
|
||||
if ( error )
|
||||
{
|
||||
FREE( node );
|
||||
goto Exit;
|
||||
}
|
||||
|
||||
ftc_node_hash_link( node, cache );
|
||||
ftc_node_mru_link( node, cache->manager );
|
||||
|
||||
cache->manager->cur_weight += clazz->node_weight( node, cache );
|
||||
|
||||
/* now try to compress the node pool when necessary */
|
||||
if ( manager->cur_weight >= manager->max_weight )
|
||||
{
|
||||
node->ref_count++;
|
||||
FTC_Manager_Compress( manager );
|
||||
node->ref_count--;
|
||||
}
|
||||
|
||||
/* try to resize the hash table when appropriate */
|
||||
if ( FTC_CACHE_RESIZE_TEST(cache) )
|
||||
ftc_cache_resize( cache );
|
||||
|
||||
*anode = node;
|
||||
}
|
||||
}
|
||||
|
||||
Exit:
|
||||
return error;
|
||||
}
|
||||
|
||||
|
||||
|
|
@ -1,204 +0,0 @@
|
|||
/***************************************************************************/
|
||||
/* */
|
||||
/* ftcchunk.c */
|
||||
/* */
|
||||
/* FreeType chunk cache cache (body). */
|
||||
/* */
|
||||
/* Copyright 2000-2001 by */
|
||||
/* David Turner, Robert Wilhelm, and Werner Lemberg. */
|
||||
/* */
|
||||
/* This file is part of the FreeType project, and may only be used, */
|
||||
/* modified, and distributed under the terms of the FreeType project */
|
||||
/* license, LICENSE.TXT. By continuing to use, modify, or distribute */
|
||||
/* this file you indicate that you have read the license and */
|
||||
/* understand and accept it fully. */
|
||||
/* */
|
||||
/***************************************************************************/
|
||||
|
||||
|
||||
#include <ft2build.h>
|
||||
#include FT_CACHE_H
|
||||
#include FT_CACHE_INTERNAL_CHUNK_H
|
||||
#include FT_LIST_H
|
||||
#include FT_ERRORS_H
|
||||
#include FT_INTERNAL_OBJECTS_H
|
||||
|
||||
#include "ftcerror.h"
|
||||
|
||||
|
||||
/*************************************************************************/
|
||||
/*************************************************************************/
|
||||
/***** *****/
|
||||
/***** GLYPH NODES *****/
|
||||
/***** *****/
|
||||
/*************************************************************************/
|
||||
/*************************************************************************/
|
||||
|
||||
|
||||
#define FTC_CSET_CHUNK_INDEX( cset, gindex ) \
|
||||
( (gindex) / (cset)->item_count )
|
||||
|
||||
#define FTC_CSET_START( cset, gindex ) \
|
||||
( FTC_CSET_CHUNK_INDEX( cset, gindex ) * (cset)->item_count )
|
||||
|
||||
#define FTC_CSET_HASH( cset, gindex ) \
|
||||
( (FT_UFast)( ( (cset)->hash << 16 ) | \
|
||||
( FTC_CSET_CHUNK_INDEX( cset, gindex ) & 0xFFFF ) ) )
|
||||
|
||||
|
||||
/* create a new chunk node, setting its cache index and ref count */
|
||||
FT_EXPORT_DEF( FT_Error )
|
||||
ftc_chunk_node_init( FTC_ChunkNode cnode,
|
||||
FTC_ChunkSet cset,
|
||||
FT_UInt gindex,
|
||||
FT_Bool alloc )
|
||||
{
|
||||
FTC_ChunkCache ccache = cset->ccache;
|
||||
FT_Error error = 0;
|
||||
FT_UInt len;
|
||||
FT_UInt start = FTC_CSET_START( cset, gindex );
|
||||
|
||||
|
||||
cnode->cset = cset;
|
||||
cnode->node.hash = FTC_CSET_HASH( cset, gindex );
|
||||
cnode->item_start = start;
|
||||
|
||||
len = cset->item_total - start;
|
||||
if ( len > cset->item_count )
|
||||
len = cset->item_count;
|
||||
|
||||
cnode->item_count = len;
|
||||
|
||||
if ( alloc )
|
||||
{
|
||||
FT_Memory memory = ccache->cache.memory;
|
||||
|
||||
|
||||
error = MEM_Alloc( cnode->items, cset->item_size * cnode->item_count );
|
||||
}
|
||||
|
||||
if ( !error )
|
||||
cset->num_chunks++;
|
||||
|
||||
return error;
|
||||
}
|
||||
|
||||
|
||||
FT_EXPORT_DEF( void )
|
||||
ftc_chunk_node_done( FTC_ChunkNode cnode )
|
||||
{
|
||||
FTC_ChunkSet cset = cnode->cset;
|
||||
FT_Memory memory = cset->ccache->cache.memory;
|
||||
|
||||
|
||||
/* destroy the node */
|
||||
FREE( cnode->items );
|
||||
cnode->item_count = 0;
|
||||
cnode->item_start = 0;
|
||||
|
||||
/* remove from parent set table -- eventually destroy the set */
|
||||
if ( --cset->num_chunks <= 0 )
|
||||
FT_LruList_Remove( cset->ccache->cset_lru, (FT_LruNode)cset );
|
||||
}
|
||||
|
||||
|
||||
/*************************************************************************/
|
||||
/*************************************************************************/
|
||||
/***** *****/
|
||||
/***** CHUNK SETS *****/
|
||||
/***** *****/
|
||||
/*************************************************************************/
|
||||
/*************************************************************************/
|
||||
|
||||
|
||||
FT_EXPORT_DEF( FT_Error )
|
||||
ftc_chunk_set_init( FTC_ChunkSet cset,
|
||||
FT_UInt item_size,
|
||||
FT_UInt item_count,
|
||||
FT_UInt item_total,
|
||||
FTC_ChunkCache cache )
|
||||
{
|
||||
cset->ccache = cache;
|
||||
cset->num_chunks = 0;
|
||||
|
||||
cset->item_total = item_total;
|
||||
cset->item_size = item_size;
|
||||
cset->item_count = item_count;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
||||
FT_EXPORT_DEF( void )
|
||||
ftc_chunk_set_done( FTC_ChunkSet cset )
|
||||
{
|
||||
/* nothing for now */
|
||||
FT_UNUSED( cset );
|
||||
}
|
||||
|
||||
|
||||
/*************************************************************************/
|
||||
/*************************************************************************/
|
||||
/***** *****/
|
||||
/***** CHUNK CACHES *****/
|
||||
/***** *****/
|
||||
/*************************************************************************/
|
||||
/*************************************************************************/
|
||||
|
||||
|
||||
FT_EXPORT_DEF( void )
|
||||
ftc_chunk_cache_done( FTC_ChunkCache ccache )
|
||||
{
|
||||
ftc_cache_done( FTC_CACHE( ccache ) );
|
||||
|
||||
/* simply delete all remaining glyph sets */
|
||||
if ( ccache->cset_lru )
|
||||
{
|
||||
FT_LruList_Destroy( ccache->cset_lru );
|
||||
ccache->cset_lru = NULL;
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
FT_EXPORT_DEF( FT_Error )
|
||||
ftc_chunk_cache_init( FTC_ChunkCache ccache,
|
||||
FT_LruList_Class cset_class )
|
||||
{
|
||||
FT_Error error;
|
||||
|
||||
|
||||
error = ftc_cache_init( FTC_CACHE( ccache ) );
|
||||
if ( error )
|
||||
goto Exit;
|
||||
|
||||
error = FT_LruList_New( cset_class, 0, ccache,
|
||||
ccache->cache.memory,
|
||||
&ccache->cset_lru );
|
||||
Exit:
|
||||
return error;
|
||||
}
|
||||
|
||||
|
||||
FT_EXPORT_DEF( FT_Error )
|
||||
ftc_chunk_cache_lookup( FTC_ChunkCache ccache,
|
||||
FTC_ChunkQuery query,
|
||||
FTC_ChunkNode *anode )
|
||||
{
|
||||
FT_LruNode node;
|
||||
FT_Error error;
|
||||
|
||||
|
||||
error = FT_LruList_Lookup( ccache->cset_lru, query, &node );
|
||||
if ( !error )
|
||||
{
|
||||
FTC_ChunkSet cset = FTC_CHUNK_SET( node );
|
||||
FT_UFast hash = FTC_CSET_HASH( cset, query->gindex );
|
||||
|
||||
error = ftc_cache_lookup_node( FTC_CACHE( ccache ), hash, query,
|
||||
FTC_NODE_P( anode ) );
|
||||
}
|
||||
return error;
|
||||
}
|
||||
|
||||
|
||||
/* END */
|
||||
Loading…
Reference in New Issue