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43 lines
1.2 KiB
43 lines
1.2 KiB
/* |
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* copyright (c) 2006 Michael Niedermayer <michaelni@gmx.at> |
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* |
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* This file is part of FFmpeg. |
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* |
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* FFmpeg is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU Lesser General Public |
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* License as published by the Free Software Foundation; either |
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* version 2.1 of the License, or (at your option) any later version. |
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* |
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* FFmpeg is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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* Lesser General Public License for more details. |
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* |
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* You should have received a copy of the GNU Lesser General Public |
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* License along with FFmpeg; if not, write to the Free Software |
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
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*/ |
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#ifndef AVUTIL_X86_TIMER_H |
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#define AVUTIL_X86_TIMER_H |
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#include <stdint.h> |
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#if HAVE_INLINE_ASM |
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#define AV_READ_TIME read_time |
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static inline uint64_t read_time(void) |
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{ |
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uint32_t a, d; |
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__asm__ volatile("rdtsc" : "=a" (a), "=d" (d)); |
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return ((uint64_t)d << 32) + a; |
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} |
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#elif HAVE_RDTSC |
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#define AV_READ_TIME __rdtsc |
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#endif /* HAVE_INLINE_ASM */ |
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#endif /* AVUTIL_X86_TIMER_H */
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