[userspace-rcu.git] / urcu / arch_arm.h

#ifndef _URCU_ARCH_ARM_H
#define _URCU_ARCH_ARM_H

/*
 * arch_arm.h: trivial definitions for the ARM architecture.
 *
 * Copyright (c) 2010 Paul E. McKenney, IBM Corporation.
 * Copyright (c) 2009 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
 */

#include <urcu/compiler.h>
#include <urcu/config.h>

#ifdef __cplusplus
extern "C" {
#endif 

#ifdef CONFIG_ARM_HAVE_DMB
#define cmm_mb()    asm volatile("dmb":::"memory")
#endif /* CONFIG_ARM_HAVE_DMB */

#include <stdlib.h>
#include <sys/time.h>

typedef unsigned long long cycles_t;

static inline cycles_t caa_get_cycles (void)
{
	cycles_t thetime;
	struct timeval tv;

	if (gettimeofday(&tv, NULL) != 0)
		return 0;
	thetime = ((cycles_t)tv.tv_sec) * 1000000ULL + ((cycles_t)tv.tv_usec);
	return (cycles_t)thetime;
}

#ifdef __cplusplus 
}
#endif

#include <urcu/arch_generic.h>

#endif /* _URCU_ARCH_ARM_H */
Commit	Line	Data
	1	#ifndef _URCU_ARCH_ARM_H
	2	#define _URCU_ARCH_ARM_H
	3
	4	/*
	5	* arch_arm.h: trivial definitions for the ARM architecture.
	6	*
	7	* Copyright (c) 2010 Paul E. McKenney, IBM Corporation.
	8	* Copyright (c) 2009 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
	9	*
	10	* This library is free software; you can redistribute it and/or
	11	* modify it under the terms of the GNU Lesser General Public
	12	* License as published by the Free Software Foundation; either
	13	* version 2.1 of the License, or (at your option) any later version.
	14	*
	15	* This library is distributed in the hope that it will be useful,
	16	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	17	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
	18	* Lesser General Public License for more details.
	19	*
	20	* You should have received a copy of the GNU Lesser General Public
	21	* License along with this library; if not, write to the Free Software
	22	* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
	23	*/
	24
	25	#include <urcu/compiler.h>
	26	#include <urcu/config.h>
	27
	28	#ifdef __cplusplus
	29	extern "C" {
	30	#endif
	31
	32	#ifdef CONFIG_ARM_HAVE_DMB
	33	#define cmm_mb() asm volatile("dmb":::"memory")
	34	#endif /* CONFIG_ARM_HAVE_DMB */
	35
	36	#include <stdlib.h>
	37	#include <sys/time.h>
	38
	39	typedef unsigned long long cycles_t;
	40
	41	static inline cycles_t caa_get_cycles (void)
	42	{
	43	cycles_t thetime;
	44	struct timeval tv;
	45
	46	if (gettimeofday(&tv, NULL) != 0)
	47	return 0;
	48	thetime = ((cycles_t)tv.tv_sec) * 1000000ULL + ((cycles_t)tv.tv_usec);
	49	return (cycles_t)thetime;
	50	}
	51
	52	#ifdef __cplusplus
	53	}
	54	#endif
	55
	56	#include <urcu/arch_generic.h>
	57
	58	#endif /* _URCU_ARCH_ARM_H */