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Add macros to use for thread-safe linked lists.

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Add LLIST_TS_* macros in a fashion similar to the already existing
LLIST_* macros. Unlike the non-thread-safe version, these include
LLIST_TS_LOCK and LLIST_TS_UNLOCK which can be used to lock (and unlock)
a list (hence the thread-safety).

Signed-off-by: Lukas Fleischer <calcurse@cryptocrack.de>
This commit is contained in:
Lukas Fleischer 2011-04-12 19:27:59 +02:00
parent 612204a60a
commit d668963e20
2 changed files with 88 additions and 0 deletions
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src/calcurse.h
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@ -56,6 +56,7 @@
#include "llist.h"
#include "htable.h"
#include "llist_ts.h"
/* Internationalization. */
#if ENABLE_NLS

87
src/llist_ts.h Normal file
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@ -0,0 +1,87 @@
/*
* Calcurse - text-based organizer
*
* Copyright (c) 2004-2011 Frederic Culot <frederic@culot.org>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* - Redistributions of source code must retain the above
* copyright notice, this list of conditions and the
* following disclaimer.
*
* - Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the
* following disclaimer in the documentation and/or other
* materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* Send your feedback or comments to : misc@calcurse.org
* Calcurse home page : http://calcurse.org
*
*/
/* Thread-safe linked lists. */
typedef struct llist_ts llist_ts_t;
struct llist_ts {
llist_item_t *head;
pthread_mutex_t mutex;
};
/* Initialization and deallocation. */
#define LLIST_TS_INIT(l_ts) do { \
llist_init ((llist_t *)l_ts); \
pthread_mutex_init (&(l_ts)->mutex, NULL); \
} while (0)
#define LLIST_TS_FREE(l_ts) do { \
llist_free ((llist_t *)l_ts); \
pthread_mutex_destroy (&(l_ts)->mutex); \
} while (0)
#define LLIST_TS_FREE_INNER(l_ts, fn_free) \
llist_free_inner ((llist_t *)l_ts, (llist_fn_free_t)fn_free)
/* Thread-safety operations. */
#define LLIST_TS_LOCK(l_ts) pthread_mutex_lock (&(l_ts)->mutex)
#define LLIST_TS_UNLOCK(l_ts) pthread_mutex_unlock (&(l_ts)->mutex)
/* Retrieving list items. */
#define LLIST_TS_FIRST(l_ts) llist_first ((llist_t *)l_ts)
#define LLIST_TS_NTH(l_ts, n) llist_nth ((llist_t *)l_ts, n)
#define LLIST_TS_NEXT(i) llist_next (i)
#define LLIST_TS_FIND_FIRST(l_ts, data, fn_match) \
llist_find_first ((llist_t *)l_ts, data, (llist_fn_match_t)fn_match)
#define LLIST_TS_FIND_NEXT(i, data, fn_match) \
llist_find_next (i, data, (llist_fn_match_t)fn_match)
#define LLIST_TS_FIND_NTH(l_ts, n, data, fn_match) \
llist_find_nth ((llist_t *)l_ts, n, data, (llist_fn_match_t)fn_match)
#define LLIST_TS_FOREACH(l_ts, i) \
for (i = LLIST_TS_FIRST (l_ts); i; i = LLIST_TS_NEXT (i))
#define LLIST_TS_FIND_FOREACH(l_ts, data, fn_match, i) \
for (i = LLIST_TS_FIND_FIRST (l_ts, data, fn_match); i; \
i = LLIST_TS_FIND_NEXT (i, data, fn_match))
/* Accessing list item data. */
#define LLIST_TS_GET_DATA(i) llist_get_data (i)
/* List manipulation. */
#define LLIST_TS_ADD(l_ts, data) llist_add ((llist_t *)l_ts, data)
#define LLIST_TS_REMOVE(l_ts, i) llist_remove ((llist_t *)l_ts, i)
#define LLIST_TS_ADD_SORTED(l_ts, data, fn_cmp) \
llist_add_sorted ((llist_t *)l_ts, data, (llist_fn_cmp_t)fn_cmp)