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#ifndef _URCU_CALL_RCU_H
#define _URCU_CALL_RCU_H
/*
* urcu-call-rcu.h
*
* Userspace RCU header - deferred execution
*
* Copyright (c) 2009 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
* Copyright (c) 2009 Paul E. McKenney, IBM Corporation.
*
* LGPL-compatible code should include this header with :
*
* #define _LGPL_SOURCE
* #include <urcu-defer.h>
*
* 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 <stdlib.h>
#include <pthread.h>
#include <urcu/wfqueue.h>
#ifdef __cplusplus
extern "C" {
#endif
/* Note that struct call_rcu_data is opaque to callers. */
struct call_rcu_data;
/* Flag values. */
#define URCU_CALL_RCU_RT (1U << 0)
#define URCU_CALL_RCU_RUNNING (1U << 1)
#define URCU_CALL_RCU_STOP (1U << 2)
#define URCU_CALL_RCU_STOPPED (1U << 3)
#define URCU_CALL_RCU_PAUSE (1U << 4)
#define URCU_CALL_RCU_PAUSED (1U << 5)
/*
* The rcu_head data structure is placed in the structure to be freed
* via call_rcu().
*/
struct rcu_head {
struct cds_wfq_node next;
void (*func)(struct rcu_head *head);
};
/*
* Exported functions
*
* Important: see rcu-api.txt in userspace-rcu documentation for
* call_rcu family of functions usage detail, including the surrounding
* RCU usage required when using these primitives.
*/
void call_rcu(struct rcu_head *head,
void (*func)(struct rcu_head *head));
struct call_rcu_data *create_call_rcu_data(unsigned long flags,
int cpu_affinity);
void call_rcu_data_free(struct call_rcu_data *crdp);
struct call_rcu_data *get_default_call_rcu_data(void);
struct call_rcu_data *get_cpu_call_rcu_data(int cpu);
struct call_rcu_data *get_thread_call_rcu_data(void);
struct call_rcu_data *get_call_rcu_data(void);
pthread_t get_call_rcu_thread(struct call_rcu_data *crdp);
void set_thread_call_rcu_data(struct call_rcu_data *crdp);
int set_cpu_call_rcu_data(int cpu, struct call_rcu_data *crdp);
int create_all_cpu_call_rcu_data(unsigned long flags);
void free_all_cpu_call_rcu_data(void);
void call_rcu_before_fork(void);
void call_rcu_after_fork_parent(void);
void call_rcu_after_fork_child(void);
#ifdef __cplusplus
}
#endif
#endif /* _URCU_CALL_RCU_H */
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