b4049cdd183a03e4e98107077887b6a1479d1e24
[urcu.git] / urcu / arch_armv7l.h
1 #ifndef _URCU_ARCH_ARMV7L_H
2 #define _URCU_ARCH_ARMV7L_H
3
4 /*
5 * arch_armv7l.h: trivial definitions for the ARMv7 architecture.
6 *
7 * Copyright (c) 2010 Paul E. McKenney, IBM Corporation.
8 * Copyright (c) 2009 Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca>
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 #define mb() asm volatile("dmb":::"memory")
33
34 #include <stdlib.h>
35 #include <sys/time.h>
36
37 typedef unsigned long long cycles_t;
38
39 static inline cycles_t get_cycles (void)
40 {
41 cycles_t thetime;
42 struct timeval tv;
43
44 if (gettimeofday(&tv, NULL) != 0)
45 return 0;
46 thetime = ((cycles_t)tv.tv_sec) * 1000000ULL + ((cycles_t)tv.tv_usec);
47 return (cycles_t)thetime;
48 }
49
50 #ifdef __cplusplus
51 }
52 #endif
53
54 #include <urcu/arch_generic.h>
55
56 #endif /* _URCU_ARCH_ARMV7L_H */
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