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comparison libavutil/x86/timer.h @ 2:897f711a7157

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rearrange to work with autoconf
author Nina Engelhardt <nengel@mailbox.tu-berlin.de>
date Tue, 25 Sep 2012 15:55:33 +0200
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-1:000000000000 0:5e9a0a492e27
1 /*
2 * copyright (c) 2006 Michael Niedermayer <michaelni@gmx.at>
3 *
4 * This file is part of FFmpeg.
5 *
6 * FFmpeg is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
10 *
11 * FFmpeg is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
15 *
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with FFmpeg; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19 */
20
21 #ifndef AVUTIL_X86_TIMER_H
22 #define AVUTIL_X86_TIMER_H
23
24 #include <stdint.h>
25
26 #define AV_READ_TIME read_time
27
28 static inline uint64_t read_time(void)
29 {
30 uint32_t a, d;
31 __asm__ volatile("rdtsc" : "=a" (a), "=d" (d));
32 return ((uint64_t)d << 32) + a;
33 }
34
35 #endif /* AVUTIL_X86_TIMER_H */