[lttng-ust.git] / include / lttng / tracepoint-rcu.h

/*
 * SPDX-License-Identifier: MIT
 *
 * Copyright (C) 2011-2012 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
 */

#ifndef _LTTNG_UST_TRACEPOINT_RCU_H
#define _LTTNG_UST_TRACEPOINT_RCU_H

#include <urcu/compiler.h>
#include <lttng/urcu/pointer.h>
#include <lttng/ust-api-compat.h>

#ifdef _LGPL_SOURCE

#include <lttng/urcu/urcu-ust.h>

#define lttng_ust_tp_rcu_read_lock	lttng_ust_urcu_read_lock
#define lttng_ust_tp_rcu_read_unlock	lttng_ust_urcu_read_unlock
#define lttng_ust_tp_rcu_dereference	lttng_ust_rcu_dereference
#define LTTNG_UST_TP_RCU_LINK_TEST()	1

#else	/* _LGPL_SOURCE */

#define lttng_ust_tp_rcu_read_lock	lttng_ust_tracepoint_dlopen_ptr->rcu_read_lock_sym
#define lttng_ust_tp_rcu_read_unlock	lttng_ust_tracepoint_dlopen_ptr->rcu_read_unlock_sym

#define lttng_ust_tp_rcu_dereference(p)						   \
		URCU_FORCE_CAST(__typeof__(p),				   \
			lttng_ust_tracepoint_dlopen_ptr->rcu_dereference_sym(URCU_FORCE_CAST(void *, p)))

#define LTTNG_UST_TP_RCU_LINK_TEST()	(lttng_ust_tracepoint_dlopen_ptr && lttng_ust_tp_rcu_read_lock)

#endif	/* _LGPL_SOURCE */

#if LTTNG_UST_COMPAT_API(0)
#define tp_rcu_read_lock	lttng_ust_tp_rcu_read_lock
#define tp_rcu_read_unlock	lttng_ust_tp_rcu_read_unlock
#define tp_rcu_dereference	lttng_ust_tp_rcu_dereference
#define TP_RCU_LINK_TEST	LTTNG_UST_TP_RCU_LINK_TEST
#endif

#endif	/* _LTTNG_UST_TRACEPOINT_RCU_H */
Commit	Line	Data
	1	/*
	2	* SPDX-License-Identifier: MIT
	3	*
	4	* Copyright (C) 2011-2012 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
	5	*/
	6
	7	#ifndef _LTTNG_UST_TRACEPOINT_RCU_H
	8	#define _LTTNG_UST_TRACEPOINT_RCU_H
	9
	10	#include <urcu/compiler.h>
	11	#include <lttng/urcu/pointer.h>
	12	#include <lttng/ust-api-compat.h>
	13
	14	#ifdef _LGPL_SOURCE
	15
	16	#include <lttng/urcu/urcu-ust.h>
	17
	18	#define lttng_ust_tp_rcu_read_lock lttng_ust_urcu_read_lock
	19	#define lttng_ust_tp_rcu_read_unlock lttng_ust_urcu_read_unlock
	20	#define lttng_ust_tp_rcu_dereference lttng_ust_rcu_dereference
	21	#define LTTNG_UST_TP_RCU_LINK_TEST() 1
	22
	23	#else /* _LGPL_SOURCE */
	24
	25	#define lttng_ust_tp_rcu_read_lock lttng_ust_tracepoint_dlopen_ptr->rcu_read_lock_sym
	26	#define lttng_ust_tp_rcu_read_unlock lttng_ust_tracepoint_dlopen_ptr->rcu_read_unlock_sym
	27
	28	#define lttng_ust_tp_rcu_dereference(p) \
	29	URCU_FORCE_CAST(__typeof__(p), \
	30	lttng_ust_tracepoint_dlopen_ptr->rcu_dereference_sym(URCU_FORCE_CAST(void *, p)))
	31
	32	#define LTTNG_UST_TP_RCU_LINK_TEST() (lttng_ust_tracepoint_dlopen_ptr && lttng_ust_tp_rcu_read_lock)
	33
	34	#endif /* _LGPL_SOURCE */
	35
	36	#if LTTNG_UST_COMPAT_API(0)
	37	#define tp_rcu_read_lock lttng_ust_tp_rcu_read_lock
	38	#define tp_rcu_read_unlock lttng_ust_tp_rcu_read_unlock
	39	#define tp_rcu_dereference lttng_ust_tp_rcu_dereference
	40	#define TP_RCU_LINK_TEST LTTNG_UST_TP_RCU_LINK_TEST
	41	#endif
	42
	43	#endif /* _LTTNG_UST_TRACEPOINT_RCU_H */