/
githubmirror
/
FFmpeg
Обзор
Документация
Войти
/
githubmirror
/
FFmpeg
Код
Запросы
0
Пакеты
0
Релизы
0
Аналитика
Безопасность
master
libavutil/x86/timer.h
50 строк
1 KB
Michael Niedermayer
Merge commit 'd1a6cb195f610978ba5d2351e60f938f7f261d59'
09 июл 2015, 13:28
09 июл 2015, 13:28
2ecbf44
Код
Авторство
О чём код?
/* * copyright (c) 2006 Michael Niedermayer <michaelni@gmx.at> * * This file is part of FFmpeg. * * FFmpeg is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * FFmpeg is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with FFmpeg; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ #ifndef AVUTIL_X86_TIMER_H #define AVUTIL_X86_TIMER_H #include <stdint.h> #if HAVE_INLINE_ASM #define FF_TIMER_UNITS "decicycles" #define AV_READ_TIME read_time static inline uint64_t read_time(void) { uint32_t a, d; __asm__ volatile( #if ARCH_X86_64 || defined(__SSE2__) "lfence \n\t" #endif "rdtsc \n\t" : "=a" (a), "=d" (d)); return ((uint64_t)d << 32) + a; } #elif HAVE_RDTSC #include <intrin.h> #define AV_READ_TIME __rdtsc #endif /* HAVE_INLINE_ASM */ #endif /* AVUTIL_X86_TIMER_H */