fix: handle EINTR correctly in get_cpu_mask_from_sysfs

[urcu.git] / include / urcu / list.h

diff --git a/include/urcu/list.h b/include/urcu/list.h
index 4aaf869351fea0a8644f696ed294482de6a179d8..4bc88b3f22c505e0f83355d3919eff80fb3ac868 100644 (file)
--- a/include/urcu/list.h
+++ b/include/urcu/list.h
@@ -1,30 +1,19 @@
+// SPDX-FileCopyrightText: 2002 Free Software Foundation, Inc.
+// SPDX-FileCopyrightText: 2009 Pierre-Marc Fournier
+// SPDX-FileCopyrightText: 2010 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
+//
+// SPDX-License-Identifier: LGPL-2.1-or-later
+
 /*
- * Copyright (C) 2002 Free Software Foundation, Inc.
  * (originally part of the GNU C Library)
  * Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
- *
- * Copyright (C) 2009 Pierre-Marc Fournier
- * Conversion to RCU list.
- * Copyright (C) 2010 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; either
- * version 2.1 of the License, or (at your option) any later version.
- *
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  */
 
 #ifndef _CDS_LIST_H
 #define _CDS_LIST_H    1
 
+#include <urcu/compiler.h>
+
 /*
  * The definitions of this file are adopted from those which can be
  * found in the Linux kernel headers to enable people familiar with the
@@ -44,7 +33,7 @@ struct cds_list_head {
 #define CDS_INIT_LIST_HEAD(ptr) \
        (ptr)->next = (ptr)->prev = (ptr)
 
-#define CDS_LIST_HEAD_INIT(name) { .prev = &(name), .next = &(name) }
+#define CDS_LIST_HEAD_INIT(name) { .next = &(name), .prev = &(name) }
 
 /* Add new element at the head of the list. */
 static inline
@@ -121,8 +110,7 @@ void cds_list_splice(struct cds_list_head *add, struct cds_list_head *head)
 }
 
 /* Get typed element from list at a given position. */
-#define cds_list_entry(ptr, type, member) \
-       ((type *) ((char *) (ptr) - (unsigned long) (&((type *) 0)->member)))
+#define cds_list_entry(ptr, type, member)      caa_container_of(ptr, type, member)
 
 
 /* Get first entry from a list. */
@@ -131,54 +119,54 @@ void cds_list_splice(struct cds_list_head *add, struct cds_list_head *head)
 
 /* Iterate forward over the elements of the list. */
 #define cds_list_for_each(pos, head) \
-       for (pos = (head)->next; pos != (head); pos = pos->next)
+       for (pos = (head)->next; (pos) != (head); pos = (pos)->next)
 
 /*
  * Iterate forward over the elements list. The list elements can be
  * removed from the list while doing this.
  */
 #define cds_list_for_each_safe(pos, p, head) \
-       for (pos = (head)->next, p = pos->next; \
-               pos != (head); \
-               pos = p, p = pos->next)
+       for (pos = (head)->next, p = (pos)->next; \
+               (pos) != (head); \
+               pos = (p), p = (pos)->next)
 
 /* Iterate backward over the elements of the list. */
 #define cds_list_for_each_prev(pos, head) \
-       for (pos = (head)->prev; pos != (head); pos = pos->prev)
+       for (pos = (head)->prev; (pos) != (head); pos = (pos)->prev)
 
 /*
  * Iterate backwards over the elements list. The list elements can be
  * removed from the list while doing this.
  */
 #define cds_list_for_each_prev_safe(pos, p, head) \
-       for (pos = (head)->prev, p = pos->prev; \
-               pos != (head); \
-               pos = p, p = pos->prev)
+       for (pos = (head)->prev, p = (pos)->prev; \
+               (pos) != (head); \
+               pos = (p), p = (pos)->prev)
 
 #define cds_list_for_each_entry(pos, head, member) \
-       for (pos = cds_list_entry((head)->next, __typeof__(*pos), member); \
-               &pos->member != (head); \
-               pos = cds_list_entry(pos->member.next, __typeof__(*pos), member))
+       for (pos = cds_list_entry((head)->next, __typeof__(*(pos)), member); \
+               &(pos)->member != (head); \
+               pos = cds_list_entry((pos)->member.next, __typeof__(*(pos)), member))
 
 #define cds_list_for_each_entry_reverse(pos, head, member) \
-       for (pos = cds_list_entry((head)->prev, __typeof__(*pos), member); \
-               &pos->member != (head); \
-               pos = cds_list_entry(pos->member.prev, __typeof__(*pos), member))
+       for (pos = cds_list_entry((head)->prev, __typeof__(*(pos)), member); \
+               &(pos)->member != (head); \
+               pos = cds_list_entry((pos)->member.prev, __typeof__(*(pos)), member))
 
 #define cds_list_for_each_entry_safe(pos, p, head, member) \
-       for (pos = cds_list_entry((head)->next, __typeof__(*pos), member), \
-                       p = cds_list_entry(pos->member.next, __typeof__(*pos), member); \
-               &pos->member != (head); \
-               pos = p, p = cds_list_entry(pos->member.next, __typeof__(*pos), member))
+       for (pos = cds_list_entry((head)->next, __typeof__(*(pos)), member), \
+                       p = cds_list_entry((pos)->member.next, __typeof__(*(pos)), member); \
+               &(pos)->member != (head); \
+               pos = (p), p = cds_list_entry((pos)->member.next, __typeof__(*(pos)), member))
 
 /*
  * Same as cds_list_for_each_entry_safe, but starts from "pos" which should
  * point to an entry within the list.
  */
 #define cds_list_for_each_entry_safe_from(pos, p, head, member) \
-        for (p = cds_list_entry(pos->member.next, __typeof__(*pos), member); \
-                &pos->member != (head); \
-                pos = p, p = cds_list_entry(pos->member.next, __typeof__(*pos), member))
+        for (p = cds_list_entry((pos)->member.next, __typeof__(*(pos)), member); \
+                &(pos)->member != (head); \
+                pos = (p), p = cds_list_entry((pos)->member.next, __typeof__(*(pos)), member))
 
 static inline
 int cds_list_empty(struct cds_list_head *head)