| Line | Branch | Exec | Source |
|---|---|---|---|
| 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 | #if HAVE_INLINE_ASM | ||
| 27 | |||
| 28 | #define FF_TIMER_UNITS "decicycles" | ||
| 29 | #define AV_READ_TIME read_time | ||
| 30 | |||
| 31 | ✗ | static inline uint64_t read_time(void) | |
| 32 | { | ||
| 33 | uint32_t a, d; | ||
| 34 | ✗ | __asm__ volatile( | |
| 35 | #if ARCH_X86_64 || defined(__SSE2__) | ||
| 36 | "lfence \n\t" | ||
| 37 | #endif | ||
| 38 | "rdtsc \n\t" | ||
| 39 | : "=a" (a), "=d" (d)); | ||
| 40 | ✗ | return ((uint64_t)d << 32) + a; | |
| 41 | } | ||
| 42 | |||
| 43 | #elif HAVE_RDTSC | ||
| 44 | |||
| 45 | #include <intrin.h> | ||
| 46 | #define AV_READ_TIME __rdtsc | ||
| 47 | |||
| 48 | #endif /* HAVE_INLINE_ASM */ | ||
| 49 | |||
| 50 | #endif /* AVUTIL_X86_TIMER_H */ | ||
| 51 |