*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA. *****************************************************************************/
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
+ *****************************************************************************/
#ifndef VLC_ARRAYS_H_
#define VLC_ARRAYS_H_
* This file defines functions, structures and macros for handling arrays in vlc
*/
+/* realloc() that never fails *if* downsizing */
+static inline void *realloc_down( void *ptr, size_t size )
+{
+ void *ret = realloc( ptr, size );
+ return ret ? ret : ptr;
+}
+
/**
* Simple dynamic array handling. Array is realloced at each insert/removal
*/
#define INSERT_ELEM( p_ar, i_oldsize, i_pos, elem ) \
do \
{ \
- if( !i_oldsize ) (p_ar) = NULL; \
+ if( !(i_oldsize) ) (p_ar) = NULL; \
(p_ar) = VLCCVP realloc( p_ar, ((i_oldsize) + 1) * sizeof(*(p_ar)) ); \
+ if( !(p_ar) ) abort(); \
if( (i_oldsize) - (i_pos) ) \
{ \
memmove( (p_ar) + (i_pos) + 1, (p_ar) + (i_pos), \
((i_oldsize) - (i_pos)) * sizeof( *(p_ar) ) ); \
} \
- (p_ar)[i_pos] = elem; \
+ (p_ar)[(i_pos)] = elem; \
(i_oldsize)++; \
} \
while( 0 )
-#define REMOVE_ELEM( p_ar, i_oldsize, i_pos ) \
+#define REMOVE_ELEM( p_ar, i_size, i_pos ) \
do \
{ \
- if( (i_oldsize) - (i_pos) - 1 ) \
+ if( (i_size) - (i_pos) - 1 ) \
{ \
memmove( (p_ar) + (i_pos), \
(p_ar) + (i_pos) + 1, \
- ((i_oldsize) - (i_pos) - 1) * sizeof( *(p_ar) ) ); \
- } \
- if( i_oldsize > 1 ) \
- { \
- (p_ar) = realloc( p_ar, ((i_oldsize) - 1) * sizeof( *(p_ar) ) ); \
+ ((i_size) - (i_pos) - 1) * sizeof( *(p_ar) ) ); \
} \
+ if( i_size > 1 ) \
+ (p_ar) = realloc_down( p_ar, ((i_size) - 1) * sizeof( *(p_ar) ) );\
else \
{ \
free( p_ar ); \
(p_ar) = NULL; \
} \
- (i_oldsize)--; \
+ (i_size)--; \
} \
while( 0 )
(tab) = cast realloc( tab, sizeof( void ** ) * ( (count) + 1 ) ); \
else \
(tab) = cast malloc( sizeof( void ** ) ); \
+ if( !(tab) ) abort(); \
(tab)[count] = (p); \
(count)++; \
} while(0)
(tab) = cast realloc( tab, sizeof( void ** ) * ( (count) + 1 ) ); \
else \
(tab) = cast malloc( sizeof( void ** ) ); \
+ if( !(tab) ) abort(); \
if( (count) - (index) > 0 ) \
memmove( (void**)(tab) + (index) + 1, \
(void**)(tab) + (index), \
(array).i_alloc = newsize; \
(array).p_elems = VLCCVP realloc( (array).p_elems, (array).i_alloc * \
sizeof(*(array).p_elems) ); \
+ if( !(array).p_elems ) abort(); \
}
#define _ARRAY_GROW1(array) { \
#define TYPEDEF_ARRAY(type, name) typedef DECL_ARRAY(type) name;
#define ARRAY_INIT(array) \
+ do { \
(array).i_alloc = 0; \
(array).i_size = 0; \
- (array).p_elems = NULL;
+ (array).p_elems = NULL; \
+ } while(0)
#define ARRAY_RESET(array) \
+ do { \
(array).i_alloc = 0; \
(array).i_size = 0; \
- free( (array).p_elems ); (array).p_elems = NULL;
+ free( (array).p_elems ); (array).p_elems = NULL; \
+ } while(0)
-#define ARRAY_APPEND(array, elem) { \
+#define ARRAY_APPEND(array, elem) \
+ do { \
_ARRAY_GROW1(array); \
(array).p_elems[(array).i_size] = elem; \
(array).i_size++; \
-}
+ } while(0)
-#define ARRAY_INSERT(array,elem,pos) { \
+#define ARRAY_INSERT(array,elem,pos) \
+ do { \
_ARRAY_GROW1(array); \
if( (array).i_size - pos ) { \
memmove( (array).p_elems + pos + 1, (array).p_elems + pos, \
} \
(array).p_elems[pos] = elem; \
(array).i_size++; \
-}
+ } while(0)
-#define ARRAY_REMOVE(array,pos) { \
+#define ARRAY_REMOVE(array,pos) \
+ do { \
if( (array).i_size - (pos) - 1 ) \
{ \
memmove( (array).p_elems + pos, (array).p_elems + pos + 1, \
} \
(array).i_size--; \
_ARRAY_SHRINK(array); \
-}
+ } while(0)
#define ARRAY_VAL(array, pos) array.p_elems[pos]
return i_hash % hashsize;
}
-struct vlc_dictionary_entry_t
+typedef struct vlc_dictionary_entry_t
{
char * psz_key;
void * p_value;
struct vlc_dictionary_entry_t * p_next;
-};
+} vlc_dictionary_entry_t;
typedef struct vlc_dictionary_t
{
int i_size;
- struct vlc_dictionary_entry_t ** p_entries;
+ vlc_dictionary_entry_t ** p_entries;
} vlc_dictionary_t;
static void * const kVLCDictionaryNotFound = NULL;
static inline void vlc_dictionary_init( vlc_dictionary_t * p_dict, int i_size )
{
+ p_dict->p_entries = NULL;
+
if( i_size > 0 )
{
- p_dict->p_entries = (struct vlc_dictionary_entry_t **)malloc(sizeof(struct vlc_dictionary_entry_t *) * i_size);
- memset( p_dict->p_entries, 0, sizeof(struct vlc_dictionary_entry_t *) * i_size );
+ p_dict->p_entries = (vlc_dictionary_entry_t **)calloc( i_size, sizeof(*p_dict->p_entries) );
+ if( !p_dict->p_entries )
+ i_size = 0;
}
- else
- p_dict->p_entries = NULL;
p_dict->i_size = i_size;
}
-static inline void vlc_dictionary_clear( vlc_dictionary_t * p_dict )
+static inline void vlc_dictionary_clear( vlc_dictionary_t * p_dict,
+ void ( * pf_free )( void * p_data, void * p_obj ),
+ void * p_obj )
{
- int i;
- struct vlc_dictionary_entry_t * p_current, * p_next;
if( p_dict->p_entries )
{
- for( i = 0; i < p_dict->i_size; i++ )
+ for( int i = 0; i < p_dict->i_size; i++ )
{
+ vlc_dictionary_entry_t * p_current, * p_next;
p_current = p_dict->p_entries[i];
while( p_current )
{
p_next = p_current->p_next;
+ if( pf_free != NULL )
+ ( * pf_free )( p_current->p_value, p_obj );
free( p_current->psz_key );
free( p_current );
p_current = p_next;
}
}
free( p_dict->p_entries );
+ p_dict->p_entries = NULL;
}
p_dict->i_size = 0;
}
return kVLCDictionaryNotFound;
int i_pos = DictHash( psz_key, p_dict->i_size );
- struct vlc_dictionary_entry_t * p_entry = p_dict->p_entries[i_pos];
+ vlc_dictionary_entry_t * p_entry = p_dict->p_entries[i_pos];
if( !p_entry )
return kVLCDictionaryNotFound;
static inline int
vlc_dictionary_keys_count( const vlc_dictionary_t * p_dict )
{
- struct vlc_dictionary_entry_t * p_entry;
+ vlc_dictionary_entry_t * p_entry;
int i, count = 0;
if( !p_dict->p_entries )
static inline char **
vlc_dictionary_all_keys( const vlc_dictionary_t * p_dict )
{
- struct vlc_dictionary_entry_t * p_entry;
+ vlc_dictionary_entry_t * p_entry;
char ** ppsz_ret;
int i, count = vlc_dictionary_keys_count( p_dict );
vlc_dictionary_init( p_dict, 1 );
int i_pos = DictHash( psz_key, p_dict->i_size );
- struct vlc_dictionary_entry_t * p_entry;
+ vlc_dictionary_entry_t * p_entry;
- p_entry = (struct vlc_dictionary_entry_t *)malloc(sizeof(struct vlc_dictionary_entry_t));
+ p_entry = (vlc_dictionary_entry_t *)malloc(sizeof(*p_entry));
p_entry->psz_key = strdup( psz_key );
p_entry->p_value = p_value;
p_entry->p_next = p_dict->p_entries[i_pos];
{
/* Count how many items there was */
int count;
- for( count = 1; p_entry->p_next; count++ ) p_entry = p_entry->p_next;
+ for( count = 1; p_entry->p_next; count++ )
+ p_entry = p_entry->p_next;
if( count > 3 ) /* XXX: this need tuning */
{
/* Here it starts to be not good, rebuild a bigger dictionary */
{
__vlc_dictionary_insert( &new_dict, p_entry->psz_key,
p_entry->p_value,
- 0 /* To avoid multiple rebuild loop */);
+ false /* To avoid multiple rebuild loop */);
p_entry = p_entry->p_next;
}
}
- vlc_dictionary_clear( p_dict );
+ vlc_dictionary_clear( p_dict, NULL, NULL );
p_dict->i_size = new_dict.i_size;
p_dict->p_entries = new_dict.p_entries;
}
static inline void
vlc_dictionary_insert( vlc_dictionary_t * p_dict, const char * psz_key, void * p_value )
{
- __vlc_dictionary_insert( p_dict, psz_key, p_value, 1 );
+ __vlc_dictionary_insert( p_dict, psz_key, p_value, true );
}
static inline void
-vlc_dictionary_remove_value_for_key( const vlc_dictionary_t * p_dict, const char * psz_key )
+vlc_dictionary_remove_value_for_key( const vlc_dictionary_t * p_dict, const char * psz_key,
+ void ( * pf_free )( void * p_data, void * p_obj ),
+ void * p_obj )
{
if( !p_dict->p_entries )
return;
int i_pos = DictHash( psz_key, p_dict->i_size );
- struct vlc_dictionary_entry_t * p_entry = p_dict->p_entries[i_pos];
- struct vlc_dictionary_entry_t * p_prev;
+ vlc_dictionary_entry_t * p_entry = p_dict->p_entries[i_pos];
+ vlc_dictionary_entry_t * p_prev;
if( !p_entry )
return; /* Not found, nothing to do */
do {
if( !strcmp( psz_key, p_entry->psz_key ) )
{
+ if( pf_free != NULL )
+ ( * pf_free )( p_entry->p_value, p_obj );
if( !p_prev )
p_dict->p_entries[i_pos] = p_entry->p_next;
else
projects / vlc / blobdiff