+// SPDX-FileCopyrightText: 2010-2012 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
+// SPDX-FileCopyrightText: 2011-2012 Lai Jiangshan <laijs@cn.fujitsu.com>
+//
+// SPDX-License-Identifier: LGPL-2.1-or-later
+
#ifndef _URCU_WFCQUEUE_STATIC_H
#define _URCU_WFCQUEUE_STATIC_H
/*
- * urcu/static/wfcqueue.h
- *
* Userspace RCU library - Concurrent Queue with Wait-Free Enqueue/Blocking Dequeue
*
* TO BE INCLUDED ONLY IN LGPL-COMPATIBLE CODE. See urcu/wfcqueue.h for
* linking dynamically with the userspace rcu library.
- *
- * Copyright 2010-2012 - Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
- * Copyright 2011-2012 - Lai Jiangshan <laijs@cn.fujitsu.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
*/
#include <pthread.h>
-#include <assert.h>
#include <poll.h>
#include <stdbool.h>
+#include <urcu/assert.h>
#include <urcu/compiler.h>
#include <urcu/uatomic.h>
_cds_wfcq_node_init(&head->node);
tail->p = &head->node;
ret = pthread_mutex_init(&head->lock, NULL);
- assert(!ret);
+ urcu_posix_assert(!ret);
}
/*
* cds_wfcq_init().
*/
static inline void _cds_wfcq_destroy(struct cds_wfcq_head *head,
- struct cds_wfcq_tail *tail)
+ struct cds_wfcq_tail *tail __attribute__((unused)))
{
int ret = pthread_mutex_destroy(&head->lock);
- assert(!ret);
+ urcu_posix_assert(!ret);
}
/*
}
static inline void _cds_wfcq_dequeue_lock(struct cds_wfcq_head *head,
- struct cds_wfcq_tail *tail)
+ struct cds_wfcq_tail *tail __attribute__((unused)))
{
int ret;
ret = pthread_mutex_lock(&head->lock);
- assert(!ret);
+ urcu_posix_assert(!ret);
}
static inline void _cds_wfcq_dequeue_unlock(struct cds_wfcq_head *head,
- struct cds_wfcq_tail *tail)
+ struct cds_wfcq_tail *tail __attribute__((unused)))
{
int ret;
ret = pthread_mutex_unlock(&head->lock);
- assert(!ret);
+ urcu_posix_assert(!ret);
}
static inline bool ___cds_wfcq_append(cds_wfcq_head_ptr_t u_head,
return ___cds_wfcq_append(head, tail, new_tail, new_tail);
}
+/*
+ * CDS_WFCQ_WAIT_SLEEP:
+ *
+ * By default, this sleeps for the given @msec milliseconds.
+ * This is a macro which LGPL users may #define themselves before
+ * including wfcqueue.h to override the default behavior (e.g.
+ * to log a warning or perform other background work).
+ */
+#ifndef CDS_WFCQ_WAIT_SLEEP
+#define CDS_WFCQ_WAIT_SLEEP(msec) ___cds_wfcq_wait_sleep(msec)
+#endif
+
+static inline void ___cds_wfcq_wait_sleep(int msec)
+{
+ (void) poll(NULL, 0, msec);
+}
+
/*
* ___cds_wfcq_busy_wait: adaptative busy-wait.
*
if (!blocking)
return 1;
if (++(*attempt) >= WFCQ_ADAPT_ATTEMPTS) {
- (void) poll(NULL, 0, WFCQ_WAIT); /* Wait for 10ms */
+ CDS_WFCQ_WAIT_SLEEP(WFCQ_WAIT); /* Wait for 10ms */
*attempt = 0;
} else {
caa_cpu_relax();
}
static inline struct cds_wfcq_node *
-___cds_wfcq_next(cds_wfcq_head_ptr_t head,
+___cds_wfcq_next(cds_wfcq_head_ptr_t head __attribute__((unused)),
struct cds_wfcq_tail *tail,
struct cds_wfcq_node *node,
int blocking)