144 lines
3.3 KiB
C
144 lines
3.3 KiB
C
/*
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* This file Copyright (C) 2007-2009 Mnemosyne LLC
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*
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* This file is licensed by the GPL version 2. Works owned by the
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* Transmission project are granted a special exemption to clause 2(b)
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* so that the bulk of its code can remain under the MIT license.
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* This exemption does not extend to derived works not owned by
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* the Transmission project.
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*
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* $Id$
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*/
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#ifndef __TRANSMISSION__
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#error only libtransmission should #include this header.
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#endif
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#ifndef TR_LIST_H
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#define TR_LIST_H
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#include "transmission.h" /* TR_INLINE */
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typedef struct tr_list
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{
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void * data;
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struct tr_list * next;
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struct tr_list * prev;
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}
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tr_list;
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typedef int ( *TrListCompareFunc )( const void * a, const void * b );
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typedef void ( *TrListForeachFunc )( void * );
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int tr_list_size( const tr_list * list );
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void tr_list_free( tr_list ** list,
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TrListForeachFunc data_free_func );
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void tr_list_append( tr_list ** list,
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void * data );
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void tr_list_prepend( tr_list ** list,
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void * data );
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void* tr_list_pop_front( tr_list ** list );
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void* tr_list_remove_data( tr_list ** list,
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const void * data );
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void* tr_list_remove( tr_list ** list,
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const void * b,
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TrListCompareFunc compare_func );
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tr_list* tr_list_find( tr_list * list,
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const void * b,
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TrListCompareFunc compare_func );
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/*
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* Double-linked list with easy memory management and fast
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* insert/remove operations
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*/
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struct __tr_list
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{
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struct __tr_list * next, * prev;
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};
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/**
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* Given a __tr_list node that's embedded in a struct, returns a pointer to the struct.
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* @param ptr pointer to the embedded __tr_list
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* @param type struct type that has contains the __tr_list
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* @param field the name of the struct's _tr_list field
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*/
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#define __tr_list_entry(ptr,type,field) ((type*) (((char*)ptr) - offsetof(type,field)))
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typedef int ( *__tr_list_cmp_t ) ( const void * a, const void * b );
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typedef void ( *__tr_list_free_t )( void * );
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/**
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* __tr_list_init()
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*
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* Init @head as an empty list.
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*/
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static TR_INLINE void
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__tr_list_init( struct __tr_list * head )
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{
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head->next = head->prev = head;
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}
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/**
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* __tr_list_insert()
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*
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* Insert @list between @prev and @next.
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*/
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void
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__tr_list_insert( struct __tr_list * list,
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struct __tr_list * prev,
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struct __tr_list * next);
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/**
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* __tr_list_splice()
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*
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* Connect @prev with @next, removing any nodes that were
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* in between.
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*/
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void
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__tr_list_splice( struct __tr_list * prev,
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struct __tr_list * next);
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/**
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* __tr_list_append()
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*
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* Append @list to the end of @head.
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*/
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static TR_INLINE void
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__tr_list_append( struct __tr_list * head,
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struct __tr_list * list)
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{
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__tr_list_insert( list, head->prev, head );
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}
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/**
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* __tr_list_remove()
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*
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* Remove @head from the list it is in.
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*/
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void
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__tr_list_remove( struct __tr_list * head );
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/**
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* __tr_list_destroy()
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*
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* Destroy the list and free all nodes
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*/
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void
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__tr_list_destroy( struct __tr_list * head,
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__tr_list_free_t func);
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#endif /* TR_LIST_H */
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