rculfqueue: LGPL-ize
[urcu.git] / urcu / arch_alpha.h
1 #ifndef _URCU_ARCH_ALPHA_H
2 #define _URCU_ARCH_ALPHA_H
3
4 /*
5 * arch_alpha.h: trivial definitions for the Alpha architecture.
6 *
7 * Copyright (c) 2010 Paolo Bonzini <pbonzini@redhat.com>
8 *
9 * This library is free software; you can redistribute it and/or
10 * modify it under the terms of the GNU Lesser General Public
11 * License as published by the Free Software Foundation; either
12 * version 2.1 of the License, or (at your option) any later version.
13 *
14 * This library is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17 * Lesser General Public License for more details.
18 *
19 * You should have received a copy of the GNU Lesser General Public
20 * License along with this library; if not, write to the Free Software
21 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
22 */
23
24 #include <urcu/compiler.h>
25 #include <urcu/config.h>
26
27 #ifdef __cplusplus
28 extern "C" {
29 #endif
30
31 #define mb() asm volatile("mb":::"memory")
32 #define wmb() asm volatile("wmb":::"memory")
33 #define read_barrier_depends() asm volatile("mb":::"memory")
34
35 typedef unsigned long long cycles_t;
36
37 static inline cycles_t get_cycles (void)
38 {
39 return 0; /* not supported */
40 }
41
42 #ifdef __cplusplus
43 }
44 #endif
45
46 #include <urcu/arch_generic.h>
47
48 #endif /* _URCU_ARCH_ALPHA_H */
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