blob: ed3b04787087af037006c4988180789f668152ca
| 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 | /** |
| 22 | * @file |
| 23 | * high precision timer, useful to profile code |
| 24 | */ |
| 25 | |
| 26 | #ifndef AVUTIL_TIMER_H |
| 27 | #define AVUTIL_TIMER_H |
| 28 | |
| 29 | #include <stdlib.h> |
| 30 | #include <stdint.h> |
| 31 | #include <inttypes.h> |
| 32 | |
| 33 | #include "config.h" |
| 34 | |
| 35 | #if HAVE_MACH_MACH_TIME_H |
| 36 | #include <mach/mach_time.h> |
| 37 | #endif |
| 38 | |
| 39 | #include "log.h" |
| 40 | |
| 41 | #if ARCH_AARCH64 |
| 42 | # include "aarch64/timer.h" |
| 43 | #elif ARCH_ARM |
| 44 | # include "arm/timer.h" |
| 45 | #elif ARCH_PPC |
| 46 | # include "ppc/timer.h" |
| 47 | #elif ARCH_X86 |
| 48 | # include "x86/timer.h" |
| 49 | #endif |
| 50 | |
| 51 | #if !defined(AV_READ_TIME) |
| 52 | # if HAVE_GETHRTIME |
| 53 | # define AV_READ_TIME gethrtime |
| 54 | # elif HAVE_MACH_ABSOLUTE_TIME |
| 55 | # define AV_READ_TIME mach_absolute_time |
| 56 | # endif |
| 57 | #endif |
| 58 | |
| 59 | #ifndef FF_TIMER_UNITS |
| 60 | # define FF_TIMER_UNITS "UNITS" |
| 61 | #endif |
| 62 | |
| 63 | #ifdef AV_READ_TIME |
| 64 | #define START_TIMER \ |
| 65 | uint64_t tend; \ |
| 66 | uint64_t tstart = AV_READ_TIME(); \ |
| 67 | |
| 68 | #define STOP_TIMER(id) \ |
| 69 | tend = AV_READ_TIME(); \ |
| 70 | { \ |
| 71 | static uint64_t tsum = 0; \ |
| 72 | static int tcount = 0; \ |
| 73 | static int tskip_count = 0; \ |
| 74 | static int thistogram[32] = {0}; \ |
| 75 | thistogram[av_log2(tend - tstart)]++; \ |
| 76 | if (tcount < 2 || \ |
| 77 | tend - tstart < 8 * tsum / tcount || \ |
| 78 | tend - tstart < 2000) { \ |
| 79 | tsum+= tend - tstart; \ |
| 80 | tcount++; \ |
| 81 | } else \ |
| 82 | tskip_count++; \ |
| 83 | if (((tcount + tskip_count) & (tcount + tskip_count - 1)) == 0) { \ |
| 84 | int i; \ |
| 85 | av_log(NULL, AV_LOG_ERROR, \ |
| 86 | "%7"PRIu64" " FF_TIMER_UNITS " in %s,%8d runs,%7d skips", \ |
| 87 | tsum * 10 / tcount, id, tcount, tskip_count); \ |
| 88 | for (i = 0; i < 32; i++) \ |
| 89 | av_log(NULL, AV_LOG_VERBOSE, " %2d", av_log2(2*thistogram[i]));\ |
| 90 | av_log(NULL, AV_LOG_ERROR, "\n"); \ |
| 91 | } \ |
| 92 | } |
| 93 | #else |
| 94 | #define START_TIMER |
| 95 | #define STOP_TIMER(id) { } |
| 96 | #endif |
| 97 | |
| 98 | #endif /* AVUTIL_TIMER_H */ |
| 99 |