From d668963e2056027526374098efe2869a0d389b92 Mon Sep 17 00:00:00 2001 From: Lukas Fleischer Date: Tue, 12 Apr 2011 19:27:59 +0200 Subject: Add macros to use for thread-safe linked lists. 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 --- src/calcurse.h | 1 + src/llist_ts.h | 87 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 88 insertions(+) create mode 100644 src/llist_ts.h (limited to 'src') diff --git a/src/calcurse.h b/src/calcurse.h index 8c9d894..f6f5898 100644 --- a/src/calcurse.h +++ b/src/calcurse.h @@ -56,6 +56,7 @@ #include "llist.h" #include "htable.h" +#include "llist_ts.h" /* Internationalization. */ #if ENABLE_NLS diff --git a/src/llist_ts.h b/src/llist_ts.h new file mode 100644 index 0000000..f30c395 --- /dev/null +++ b/src/llist_ts.h @@ -0,0 +1,87 @@ +/* + * Calcurse - text-based organizer + * + * Copyright (c) 2004-2011 Frederic Culot + * 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) + -- cgit v1.2.3-70-g09d2