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important bug fixes for new cache code

This commit is contained in:
David Turner 2003-12-21 01:41:32 +00:00
parent 32174ffba2
commit 89f331b713
12 changed files with 360 additions and 425 deletions
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15
include/freetype/cache/ftccache.h vendored
View File

@ -19,7 +19,7 @@
#ifndef __FTCCACHE_H__
#define __FTCCACHE_H__
#include FT_CACHE_INTERNAL_MRU_H
FT_BEGIN_HEADER
@ -52,12 +52,11 @@ FT_BEGIN_HEADER
/* structure size should be 20 bytes on 32-bits machines */
typedef struct FTC_NodeRec_
{
FTC_Node mru_next; /* circular mru list pointer */
FTC_Node mru_prev; /* circular mru list pointer */
FTC_Node link; /* used for hashing */
FT_UInt32 hash; /* used for hashing too */
FT_UShort cache_index; /* index of cache the node belongs to */
FT_Short ref_count; /* reference count for this node */
FTC_MruNodeRec mru; /* circular mru list pointer */
FTC_Node link; /* used for hashing */
FT_UInt32 hash; /* used for hashing too */
FT_UShort cache_index; /* index of cache the node belongs to */
FT_Short ref_count; /* reference count for this node */
} FTC_NodeRec;
@ -65,6 +64,8 @@ FT_BEGIN_HEADER
#define FTC_NODE( x ) ( (FTC_Node)(x) )
#define FTC_NODE_P( x ) ( (FTC_Node*)(x) )
#define FTC_NODE__MRU_NEXT(x) FTC_NODE( (x)->mru.next )
#define FTC_NODE__MRU_PREV(x) FTC_NODE( (x)->mru.prev )
/*************************************************************************/
/* */

27
include/freetype/cache/ftcglyph.h vendored
View File

@ -54,12 +54,12 @@
*
*
* a typical FTC_GCache implementation must provide at least the following:
*
*
* - FTC_GNode sub-class, e.g. MyNode, with relevant methods, i.e:
* my_node_new ( must call FTC_GNode_Init )
* my_node_free ( must call FTC_GNode_Done )
* my_node_compare ( must call FTC_GNode_Compare )
* my_node_remove_faceid ( must call ftc_gnode_unselect in case
* my_node_remove_faceid ( must call ftc_gnode_unselect in case
* of match )
*
*
@ -130,13 +130,14 @@ FT_BEGIN_HEADER
*
* families are implemented as MRU list nodes. They are reference-counted
*/
typedef struct FTC_FamilyRec_
{
FTC_MruNode mrunode;
FTC_MruNodeRec mrunode;
FT_UInt num_nodes; /* current number of nodes in this family */
FTC_Cache cache;
FTC_MruListClass clazz;
} FTC_FamilyRec, *FTC_Family;
#define FTC_FAMILY(x) ( (FTC_Family)(x) )
@ -166,15 +167,6 @@ FT_BEGIN_HEADER
/* each glyph node contains a 'chunk' of glyph items; */
/* translate a glyph index into a chunk index */
#define FTC_FAMILY_CHUNK( gfam, gindex ) \
( ( gindex ) / FTC_FAMILY( gfam )->item_count )
/* find a glyph index's chunk, and return its start index */
#define FTC_FAMILY_START( gfam, gindex ) \
( FTC_FAMILY_CHUNK( gfam, gindex ) * \
FTC_FAMILY( gfam )->item_count )
/*************************************************************************/
/* */
@ -209,6 +201,10 @@ FT_BEGIN_HEADER
FTC_Cache cache );
FT_EXPORT( void )
FTC_Family_Init( FTC_Family family,
FTC_Cache cache );
typedef struct FTC_GCacheRec_
{
FTC_CacheRec cache;
@ -243,6 +239,7 @@ FT_BEGIN_HEADER
#define FTC_GCACHE_CLASS(x) ((FTC_GCacheClass)(x))
#define FTC_CACHE__GCACHE_CLASS(x) FTC_GCACHE_CLASS( FTC_CACHE(x)->org_class )
#define FTC_CACHE__FAMILY_CLASS(x) ((FTC_MruListClass) FTC_CACHE__GCACHE_CLASS(x)->family_class)
/* convenience function. use instead of FTC_Manager_Register_Cache */
@ -259,7 +256,7 @@ FT_BEGIN_HEADER
FTC_Node *anode );
/* */
FT_END_HEADER

11
include/freetype/cache/ftcmanag.h vendored
View File

@ -71,6 +71,7 @@
FT_BEGIN_HEADER
#define FT_DEBUG_ERROR
/*************************************************************************/
/* */
@ -96,7 +97,7 @@ FT_BEGIN_HEADER
FT_ULong max_weight;
FT_ULong cur_weight;
FT_UInt num_nodes;
FTC_Cache caches[ FTC_MAX_CACHES ];
FT_UInt num_caches;
@ -158,7 +159,7 @@ FT_BEGIN_HEADER
FT_Int pixel;
FT_UInt x_res;
FT_UInt y_res;
} FTC_ScalerRec, *FTC_Scaler;
@ -167,14 +168,14 @@ FT_BEGIN_HEADER
(a)->width == (b)->width && \
(a)->height == (b)->height && \
((a)->pixel != 0) == ((b)->pixel != 0) && \
( (a)->pixel || \
( (a)->x_res == (b)->x_res && \
( (a)->pixel || \
( (a)->x_res == (b)->x_res && \
(a)->y_res == (b)->y_res ) ) )
#define FTC_SCALER_HASH(q) \
( FTC_FACE_ID_HASH((q)->face_id) + \
(q)->width + (q)->height*7 + \
(q)->pixel ? ( (q)->x_res*33 ^ (q)->y_res*61 ) : 0 )
( (q)->pixel ? 0 : ( (q)->x_res*33 ^ (q)->y_res*61 ) ) )
FT_EXPORT( FT_Error )

42
include/freetype/cache/ftcmru.h vendored
View File

@ -56,18 +56,33 @@
FT_BEGIN_HEADER
typedef struct FTC_MruListRec_* FTC_MruList;
typedef struct FTC_MruNodeRec_* FTC_MruNode;
typedef struct FTC_MruListClassRec_ const * FTC_MruListClass;
typedef struct FTC_MruNodeRec_
{
FTC_MruNode next;
FTC_MruNode prev;
} FTC_MruNodeRec;
FT_EXPORT( void )
FTC_MruNode_Prepend( FTC_MruNode *plist,
FTC_MruNode node );
FT_EXPORT( void )
FTC_MruNode_Up( FTC_MruNode *plist,
FTC_MruNode node );
FT_EXPORT( void )
FTC_MruNode_Remove( FTC_MruNode *plist,
FTC_MruNode node );
typedef struct FTC_MruListRec_* FTC_MruList;
typedef struct FTC_MruListClassRec_ const * FTC_MruListClass;
typedef FT_Int (*FTC_MruNode_CompareFunc)( FTC_MruNode node,
FT_Pointer key );
@ -92,6 +107,7 @@ FT_BEGIN_HEADER
} FTC_MruListClassRec;
typedef struct FTC_MruListRec_
{
FT_UInt num_nodes;
@ -119,14 +135,22 @@ FT_BEGIN_HEADER
FTC_MruList_Done( FTC_MruList list );
FT_EXPORT( FT_Error )
FT_EXPORT( FTC_MruNode )
FTC_MruList_Lookup( FTC_MruList list,
FT_Pointer key,
FTC_MruNode *pnode );
FT_Pointer key );
FT_EXPORT( void )
FTC_MruList_Remove( FTC_MruList list,
FTC_MruNode node );
FTC_MruList_Up( FTC_MruList list,
FTC_MruNode node );
FT_EXPORT( FT_Error )
FTC_MruList_New( FTC_MruList list,
FT_Pointer key,
FTC_MruNode *anode );
FT_EXPORT( void )
FTC_MruList_Remove( FTC_MruList list,
FTC_MruNode node );
FT_EXPORT( void )
FTC_MruList_RemoveSelection( FTC_MruList list,

4
src/cache/descrip.mms vendored
View File

@ -20,7 +20,7 @@ OBJS=ftcache.obj
all : $(OBJS)
library [--.lib]freetype.olb $(OBJS)
ftcache.obj : ftcache.c ftlru.c ftcmanag.c ftccache.c ftcglyph.c ftcimage.c \
ftcsbits.c ftccmap.c
ftcache.obj : ftcache.c ftcmru.c ftcmanag.c ftccache.c ftcglyph.c ftcimage.c \
ftcsbits.c ftccmap.c ftcbasic.c
# EOF

14
src/cache/ftcbasic.c vendored
View File

@ -57,15 +57,7 @@
FTC_BasicQuery query,
FTC_Cache cache )
{
ftc_family_init( FTC_FAMILY( family ), cache );
family->attrs = query->attrs;
return 0;
}
static FT_Error
ftc_basic_family_reset( FTC_BasicFamily family,
FTC_BasicQuery query )
{
FTC_Family_Init( FTC_FAMILY( family ), cache );
family->attrs = query->attrs;
return 0;
}
@ -188,7 +180,7 @@
sizeof( FTC_BasicFamilyRec ),
(FTC_MruNode_CompareFunc) ftc_basic_family_compare,
(FTC_MruNode_InitFunc) ftc_basic_family_init,
(FTC_MruNode_ResetFunc) ftc_basic_family_reset,
(FTC_MruNode_ResetFunc) NULL,
(FTC_MruNode_DoneFunc) NULL
},
(FTC_IFamily_LoadGlyphFunc) ftc_basic_family_load_glyph
@ -290,7 +282,7 @@
sizeof( FTC_BasicFamilyRec ),
(FTC_MruNode_CompareFunc) ftc_basic_family_compare,
(FTC_MruNode_InitFunc) ftc_basic_family_init,
(FTC_MruNode_ResetFunc) ftc_basic_family_reset,
(FTC_MruNode_ResetFunc) NULL,
(FTC_MruNode_DoneFunc) NULL
},
(FTC_SFamily_GetCountFunc) ftc_basic_family_get_count,

83
src/cache/ftccache.c vendored
View File

@ -29,7 +29,7 @@
#define FTC_HASH_SUB_LOAD ( FTC_HASH_MAX_LOAD - FTC_HASH_MIN_LOAD )
/* this one _must_ be a power of 2! */
#define FTC_HASH_INITIAL_SIZE 8
#define FTC_HASH_INITIAL_SIZE 512
/*************************************************************************/
@ -45,31 +45,7 @@
ftc_node_mru_link( FTC_Node node,
FTC_Manager manager )
{
FTC_Node first = manager->nodes_list;
if ( first )
{
FTC_Node last = first->mru_prev;
FT_ASSERT( last->mru_next == first );
node->mru_prev = last;
node->mru_next = first;
last->mru_next = node;
first->mru_prev = node;
}
else
{
FT_ASSERT( manager->num_nodes == 0 );
node->mru_next = node;
node->mru_prev = node;
}
manager->nodes_list = node;
FTC_MruNode_Prepend( (FTC_MruNode*)&manager->nodes_list, (FTC_MruNode)node );
manager->num_nodes++;
}
@ -79,29 +55,7 @@
ftc_node_mru_unlink( FTC_Node node,
FTC_Manager manager )
{
FTC_Node first = manager->nodes_list;
FTC_Node prev = node->mru_prev;
FTC_Node next = node->mru_next;
FT_ASSERT( first != NULL && manager->num_nodes > 0 );
FT_ASSERT( next->mru_prev == node );
FT_ASSERT( prev->mru_next == node );
next->mru_prev = prev;
prev->mru_next = next;
if ( node == first )
{
/* this is the last node in the list; update its head pointer */
if ( node == next )
manager->nodes_list = NULL;
else
manager->nodes_list = next;
}
node->mru_next = NULL;
node->mru_prev = NULL;
FTC_MruNode_Remove( (FTC_MruNode*)&manager->nodes_list, (FTC_MruNode)node );
manager->num_nodes--;
}
@ -111,27 +65,7 @@
ftc_node_mru_up( FTC_Node node,
FTC_Manager manager )
{
FTC_Node first = manager->nodes_list;
if ( node != first )
{
FTC_Node prev = node->mru_prev;
FTC_Node next = node->mru_next;
FTC_Node last;
prev->mru_next = next;
next->mru_prev = prev;
last = first->mru_prev;
node->mru_next = first;
node->mru_prev = last;
first->mru_prev = node;
last->mru_next = node;
manager->nodes_list = node;
}
FTC_MruNode_Up( (FTC_MruNode*)&manager->nodes_list, (FTC_MruNode)node );
}
@ -142,6 +76,9 @@
static void
ftc_cache_resize( FTC_Cache cache )
{
#if 1
FT_UNUSED(cache);
#else
for (;;)
{
FTC_Node node, *pnode;
@ -236,6 +173,7 @@
else /* the hash table is balanced */
break;
}
#endif
}
@ -559,6 +497,10 @@
}
AddNode:
node->ref_count = 0;
node->cache_index = (FT_UInt16) cache->index;
node->hash = hash;
/* don't assume that the cache has the same number of buckets, since
* our allocation request might have triggered global cache flushing
*/
@ -624,4 +566,5 @@
ftc_cache_resize( cache );
}
/* END */

157
src/cache/ftccache.i vendored
View File

@ -1,157 +0,0 @@
/***************************************************************************/
/* */
/* ftccache.i */
/* */
/* FreeType template for generic cache. */
/* */
/* Copyright 2002 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. */
/* */
/***************************************************************************/
#ifndef GEN_CACHE_FAMILY_COMPARE
#error "GEN_CACHE_FAMILY_COMPARE not defined in template instantiation"
#endif
#ifndef GEN_CACHE_NODE_COMPARE
#error "GEN_CACHE_NODE_COMPARE not defined in template instantiation"
#endif
static FT_Error
GEN_CACHE_LOOKUP( FTC_Cache cache,
FTC_Query query,
FTC_Node *anode )
{
FT_LruNode lru;
FTC_Family family;
FT_UFast hash;
query->hash = 0;
query->family = NULL;
/* XXX: we break encapsulation for the sake of speed! */
{
/* first of all, find the relevant family */
FT_LruList list = cache->families;
FT_LruNode fam, *pfam;
pfam = &list->nodes;
for (;;)
{
fam = *pfam;
if ( fam == NULL )
goto Normal;
if ( GEN_CACHE_FAMILY_COMPARE( fam, query, list->data ) )
break;
pfam = &fam->next;
}
FT_ASSERT( fam != NULL );
/* move to top of list when needed */
if ( fam != list->nodes )
{
*pfam = fam->next;
fam->next = list->nodes;
list->nodes = fam;
}
lru = fam;
}
{
FTC_Node node, *pnode, *bucket;
family = (FTC_Family)lru;
hash = query->hash;
{
FT_UInt idx;
idx = hash & cache->mask;
if ( idx < cache->p )
idx = hash & ( cache->mask * 2 + 1 );
bucket = cache->buckets + idx;
}
pnode = bucket;
for ( ;; )
{
node = *pnode;
if ( node == NULL )
goto Normal;
if ( node->hash == hash &&
(FT_UInt)node->fam_index == family->fam_index &&
GEN_CACHE_NODE_COMPARE( node, query, cache ) )
{
/* we place the following out of the loop to make it */
/* as small as possible... */
goto Found;
}
pnode = &node->link;
}
Normal:
return ftc_cache_lookup( cache, query, anode );
Found:
/* 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 )
{
/* XXX: again, this is an inlined version of ftc_node_mru_up */
FTC_Manager manager = cache->manager;
FTC_Node first = manager->nodes_list;
FTC_Node prev = node->mru_prev;
FTC_Node next = node->mru_next;
FTC_Node last;
prev->mru_next = next;
next->mru_prev = prev;
last = first->mru_prev;
node->mru_next = first;
node->mru_prev = last;
first->mru_prev = node;
last->mru_next = node;
manager->nodes_list = node;
}
*anode = node;
return 0;
}
}
#undef GEN_CACHE_NODE_COMPARE
#undef GEN_CACHE_FAMILY_COMPARE
#undef GEN_CACHE_LOOKUP
/* END */

27
src/cache/ftcglyph.c vendored
View File

@ -26,6 +26,7 @@
#include "ftcerror.h"
/* create a new chunk node, setting its cache index and ref count */
FT_EXPORT_DEF( void )
FTC_GNode_Init( FTC_GNode gnode,
@ -34,6 +35,7 @@
{
gnode->family = family;
gnode->gindex = gindex;
family->num_nodes++;
}
@ -79,13 +81,14 @@
/*************************************************************************/
FT_EXPORT_DEF( void )
ftc_family_init( FTC_Family family,
FTC_Family_Init( FTC_Family family,
FTC_Cache cache )
{
FTC_GCacheClass clazz = FTC_CACHE__GCACHE_CLASS(cache);
family->clazz = clazz->family_class;
family->num_nodes = 0;
family->cache = cache;
}
@ -134,15 +137,27 @@
FTC_GQuery query,
FTC_Node *anode )
{
FT_Error error;
FT_Error error;
FTC_Family family;
query->gindex = gindex;
error = FTC_MruList_Lookup( &cache->families, query,
(FTC_MruNode*) &query->family );
if ( !error )
error = FTC_Cache_Lookup( FTC_CACHE(cache), hash, query, anode );
family = (FTC_Family) FTC_MruList_Lookup( &cache->families, query );
if ( family == NULL )
{
error = FTC_MruList_New( &cache->families, query, (FTC_MruNode*) &family );
if ( error )
{
*anode = NULL;
goto Exit;
}
}
query->family = family;
error = FTC_Cache_Lookup( FTC_CACHE(cache), hash, query, anode );
Exit:
return error;
}

65
src/cache/ftcmanag.c vendored
View File

@ -144,7 +144,7 @@
FTC_Scaler scaler,
FT_Size *asize )
{
FT_Error error;
FT_Error error = 0;
FTC_SizeNode node;
@ -156,16 +156,20 @@
if ( !manager )
return FTC_Err_Invalid_Cache_Handle;
error = FTC_MruList_Lookup( &manager->sizes,
scaler,
(FTC_MruNode*) &node );
error = FTC_MruList_Get( &manager->sizes, scaler, (FTC_MruNode*) &node );
if ( !error )
{
*asize = node->size;
FT_Activate_Size( node->size );
}
Exit:
return error;
}
/*************************************************************************/
/*************************************************************************/
/***** *****/
@ -211,9 +215,6 @@
ftc_face_node_done( FTC_FaceNode node,
FTC_Manager manager )
{
FT_Memory memory = manager->memory;
/* we must begin by removing all scalers for the target face */
/* from the manager's list */
FTC_MruList_RemoveSelection(
@ -222,11 +223,12 @@
node->face_id );
/* all right, we can discard the face now */
FT_Done_Face( node->face );
node->face = NULL;
if ( node->face )
{
FT_Done_Face( node->face );
node->face = NULL;
}
node->face_id = NULL;
FT_FREE( node );
}
@ -257,7 +259,7 @@
FTC_FaceID face_id,
FT_Face *aface )
{
FT_Error error;
FT_Error error = 0;
FTC_FaceNode node;
@ -269,12 +271,17 @@
if ( !manager )
return FTC_Err_Invalid_Cache_Handle;
error = FTC_MruList_Lookup( &manager->faces,
face_id,
(FTC_MruNode*) &node );
if ( !error )
*aface = node->face;
node = (FTC_FaceNode) FTC_MruList_Lookup( &manager->faces, face_id );
if ( node == NULL )
{
error = FTC_MruList_New( &manager->faces, face_id, (FTC_MruNode*) &node );
if (error)
goto Exit;
}
*aface = node->face;
Exit:
return error;
}
@ -422,7 +429,7 @@
do
{
FTC_Cache cache = manager->caches + node->cache_index;
FTC_Cache cache = manager->caches[node->cache_index];
if ( (FT_UInt)node->cache_index >= manager->num_caches )
FT_ERROR(( "FTC_Manager_Check: invalid node (cache index = %ld\n",
@ -432,7 +439,7 @@
weight += cache->clazz.node_weight( node, cache );
}
node = node->mru_next;
node = FTC_NODE__MRU_NEXT(node);
} while ( node != first );
@ -451,7 +458,7 @@
do
{
count++;
node = node->mru_next;
node = FTC_NODE__MRU_NEXT(node);
} while ( node != first );
@ -494,20 +501,23 @@
return;
/* go to last node - it's a circular list */
node = first->mru_prev;
node = FTC_NODE__MRU_PREV(first);
do
{
FTC_Node prev = node->mru_prev;
FTC_Node prev = FTC_NODE__MRU_PREV(node);
prev = ( node == first ) ? NULL : node->mru_prev;
prev = FTC_NODE__MRU_PREV(node);
if ( node->ref_count <= 0 )
ftc_node_destroy( node, manager );
if ( node == first )
break;
node = prev;
} while ( node && manager->cur_weight > manager->max_weight );
} while ( manager->cur_weight > manager->max_weight );
}
@ -576,11 +586,10 @@
return 0;
/* go to last node - it's a circular list */
node = first->mru_prev;
node = FTC_NODE__MRU_PREV( first );
for ( result = 0; result < count; )
{
FTC_Node prev = node->mru_prev;
FTC_Node prev = FTC_NODE__MRU_PREV(node);
/* don't touch locked nodes */
if ( node->ref_count <= 0 )
@ -589,7 +598,7 @@
result++;
}
if ( prev == manager->nodes_list )
if ( node == first )
break;
node = prev;

335
src/cache/ftcmru.c vendored
View File

@ -6,6 +6,94 @@
#include "ftcerror.h"
FT_EXPORT_DEF( void )
FTC_MruNode_Prepend( FTC_MruNode *plist,
FTC_MruNode node )
{
FTC_MruNode first = *plist;
if ( first )
{
FTC_MruNode last = first->prev;
last->next = node;
first->prev = node;
node->prev = last;
node->next = first;
}
else
{
node->next = node;
node->prev = node;
}
*plist = node;
}
FT_EXPORT_DEF( void )
FTC_MruNode_Up( FTC_MruNode *plist,
FTC_MruNode node )
{
FTC_MruNode first = *plist;
FT_ASSERT( first != NULL );
if ( node != first )
{
FTC_MruNode prev = node->prev;
FTC_MruNode next = node->next;
FTC_MruNode last;
prev->next = next;
next->prev = prev;
last = first->prev;
first->prev = node;
last->next = node;
node->prev = last;
node->next = first;
*plist = node;
}
}
FT_EXPORT( void )
FTC_MruNode_Remove( FTC_MruNode *plist,
FTC_MruNode node )
{
FTC_MruNode first = *plist;
FTC_MruNode prev, next;
FT_ASSERT( first != NULL );
next = node->next;
prev = node->prev;
if ( node == next )
{
FT_ASSERT( node == prev );
FT_ASSERT( node == first );
*plist = NULL;
}
else
{
prev->next = next;
next->prev = prev;
if ( node == first )
*plist = next;
}
node->prev = NULL;
node->next = NULL;
}
FT_EXPORT_DEF( void )
FTC_MruList_Init( FTC_MruList list,
FTC_MruListClass clazz,
@ -22,30 +110,33 @@
}
static void
ftc_mrulist_free_nodes( FTC_MruList list,
FTC_MruNode *plist )
{
FT_Memory memory = list->memory;
while ( *plist )
{
FTC_MruNode node = *plist;
*plist = node->next;
if ( list->clazz.node_done )
list->clazz.node_done( node, list->data );
FT_FREE( node );
}
}
FT_EXPORT( void )
FTC_MruList_Reset( FTC_MruList list )
{
ftc_mrulist_free_nodes( list, &list->nodes );
FT_Memory memory = list->memory;
FTC_MruNode first = list->nodes;
if ( first )
{
FTC_MruNode node = first;
FTC_MruNode next;
do
{
next = node->next;
if ( list->clazz.node_done )
list->clazz.node_done( node, list->data );
FT_FREE( node );
node = next;
}
while ( node != first );
}
list->nodes = NULL;
list->num_nodes = 0;
}
@ -57,75 +148,91 @@
}
FT_EXPORT( FT_Error )
FTC_MruList_Lookup( FTC_MruList list,
FT_Pointer key,
FTC_MruNode *anode )
FT_EXPORT_DEF( void )
FTC_MruList_Up( FTC_MruList list,
FTC_MruNode node )
{
FTC_MruNode_Up( &list->nodes, node );
}
FT_EXPORT_DEF( FTC_MruNode )
FTC_MruList_Lookup( FTC_MruList list,
FT_Pointer key )
{
FT_Memory memory = list->memory;
FTC_MruNode_CompareFunc compare = list->clazz.node_compare;
FTC_MruNode *plast, *pnode, *pfirst;
FTC_MruNode node;
FT_Error error = 0;
FTC_MruNode node, first;
pfirst = &list->nodes;
plast = pnode = pfirst;
first = list->nodes;
node = NULL;
for (;;)
if ( first )
{
node = *pnode;
if ( node == NULL )
goto NewNode;
if ( compare( node, key ) )
break;
plast = pnode;
pnode = &node->next;
}
node = first;
do
{
if ( compare( node, key ) )
goto Exit;
if ( node != *pfirst )
{
*pnode = node->next;
node->next = *pfirst;
*pfirst = node;
}
goto Exit;
node = node->next;
} while ( node != first );
node = NULL;
}
Exit:
return node;
}
FT_EXPORT_DEF( FT_Error )
FTC_MruList_New( FTC_MruList list,
FT_Pointer key,
FTC_MruNode *anode )
{
FT_Memory memory = list->memory;
FT_Error error;
FTC_MruNode node;
NewNode:
if ( list->max_nodes > 0 && list->num_nodes >= list->max_nodes )
{
node = *plast;
FT_ASSERT( list->nodes != NULL );
if ( node )
node = list->nodes->prev; /* last node */
if ( list->clazz.node_reset )
{
*plast = NULL;
list->num_nodes--;
FTC_MruNode_Up( &list->nodes, node );
if ( list->clazz.node_reset )
{
error = list->clazz.node_reset( node, key, list->data );
if ( !error ) goto AddNode;
}
list->clazz.node_done( node, list->data );
error = list->clazz.node_reset( node, key, list->data );
if ( !error )
goto Exit;
}
}
else if ( FT_ALLOC( node, list->clazz.node_size ) )
goto Exit;
error = list->clazz.node_init( node, key, list->data );
if ( error )
{
FTC_MruNode_Remove( &list->nodes, node );
list->num_nodes--;
if ( list->clazz.node_done )
list->clazz.node_done( node, list->data );
FT_FREE( node );
}
else
{
if ( FT_ALLOC( node, list->clazz.node_size ) )
goto Exit;
}
error = list->clazz.node_init( node, key, list->data );
if ( !error )
{
FTC_MruNode_Prepend( &list->nodes, node );
list->num_nodes++;
goto Exit;
}
AddNode:
node->next = list->nodes;
list->nodes = node;
list->num_nodes++;
if ( list->clazz.node_done )
list->clazz.node_done( node, list->data );
FT_FREE( node );
Exit:
*anode = node;
@ -133,39 +240,42 @@
}
FT_EXPORT_DEF( FT_Error )
FTC_MruList_Get( FTC_MruList list,
FT_Pointer key,
FTC_MruNode *anode )
{
FT_Error error = 0;
FTC_MruNode node;
node = FTC_MruList_Lookup( list, key );
if ( node == NULL )
{
error = FTC_MruList_New( list, key, &node );
if ( error )
node = NULL;
}
*anode = node;
return error;
}
FT_EXPORT_DEF( void )
FTC_MruList_Remove( FTC_MruList list,
FTC_MruNode node )
{
FTC_MruNode *pnode = &list->nodes;
FT_Memory memory = list->memory;
for ( ;; )
{
if ( *pnode == NULL ) /* should not happen !! */
{
FT_ERROR(( "%s: trying to remove unknown node !!\n",
"FTC_MruList_Remove" ));
return;
}
FT_ASSERT( list->nodes != NULL && list->num_nodes > 0 );
if ( *pnode == node )
break;
pnode = &node->next;
}
*pnode = node->next;
node->next = NULL;
FTC_MruNode_Remove( &list->nodes, node );
list->num_nodes--;
{
FT_Memory memory = list->memory;
if ( list->clazz.node_done )
list->clazz.node_done( node, list->data );
if ( list->clazz.node_done )
list->clazz.node_done( node, list->data );
FT_FREE( node );
}
FT_FREE( node );
}
@ -174,30 +284,29 @@
FTC_MruNode_CompareFunc select,
FT_Pointer key )
{
FTC_MruNode *pnode = &list->nodes;
FTC_MruNode node, free = NULL;;
FTC_MruNode first = list->nodes;
if ( select )
while ( first && select( first, key ) )
{
for (;;)
{
FTC_MruNode node = *pnode;
if ( node == NULL )
break;
if ( select( node, key ) )
{
*pnode = node->next;
node->next = free;
free = node;
}
else
pnode = &node->next;
}
FTC_MruList_Remove( list, first );
first = list->nodes;
}
ftc_mrulist_free_nodes( list, &free );
if ( first )
{
FTC_MruNode node = first->next;
FTC_MruNode next;
while ( node != first )
{
next = node->next;
if ( select( node, key ) )
FTC_MruList_Remove( list, node );
node = next;
}
}
}
/* END */

5
src/cache/ftcsbits.c vendored
View File

@ -91,7 +91,7 @@
FTC_SFamilyClass clazz;
if ( (FT_UInt)gindex >= gnode->gindex + snode->count )
if ( (FT_UInt)(gindex - gnode->gindex) >= snode->count )
{
FT_ERROR(( "ftc_snode_load: invalid glyph index" ));
return FTC_Err_Invalid_Argument;
@ -267,7 +267,8 @@
FT_UInt gindex = gquery->gindex;
FT_Bool result;
result = FT_BOOL( (FT_UInt)(gindex - gnode->gindex) < snode->count );
result = FT_BOOL( gnode->family == gquery->family &&
(FT_UInt)(gindex - gnode->gindex) < snode->count );
if ( result )
{
/* check if we need to load the glyph bitmap now */