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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 6147 | serge | 1 | /* |
| 2 | * copyright (c) 2006 Michael Niedermayer |
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| 3 | * |
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| 4 | * This file is part of FFmpeg. |
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| 5 | * |
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| 6 | * FFmpeg is free software; you can redistribute it and/or |
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| 7 | * modify it under the terms of the GNU Lesser General Public |
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| 8 | * License as published by the Free Software Foundation; either |
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| 9 | * version 2.1 of the License, or (at your option) any later version. |
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| 10 | * |
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| 11 | * FFmpeg is distributed in the hope that it will be useful, |
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| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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| 14 | * Lesser General Public License for more details. |
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| 15 | * |
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| 16 | * You should have received a copy of the GNU Lesser General Public |
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| 17 | * License along with FFmpeg; if not, write to the Free Software |
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| 18 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
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| 19 | */ |
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| 20 | |||
| 21 | /** |
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| 22 | * @file |
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| 23 | * high precision timer, useful to profile code |
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| 24 | */ |
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| 25 | |||
| 26 | #ifndef AVUTIL_TIMER_H |
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| 27 | #define AVUTIL_TIMER_H |
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| 28 | |||
| 29 | #include |
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| 30 | #include |
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| 31 | #include |
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| 32 | |||
| 33 | #include "config.h" |
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| 34 | |||
| 35 | #if HAVE_MACH_MACH_TIME_H |
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| 36 | #include |
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| 37 | #endif |
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| 38 | |||
| 39 | #include "log.h" |
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| 40 | |||
| 41 | #if ARCH_ARM |
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| 42 | # include "arm/timer.h" |
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| 43 | #elif ARCH_PPC |
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| 44 | # include "ppc/timer.h" |
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| 45 | #elif ARCH_X86 |
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| 46 | # include "x86/timer.h" |
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| 47 | #endif |
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| 48 | |||
| 49 | #if !defined(AV_READ_TIME) |
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| 50 | # if HAVE_GETHRTIME |
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| 51 | # define AV_READ_TIME gethrtime |
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| 52 | # elif HAVE_MACH_ABSOLUTE_TIME |
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| 53 | # define AV_READ_TIME mach_absolute_time |
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| 54 | # endif |
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| 55 | #endif |
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| 56 | |||
| 57 | #ifndef FF_TIMER_UNITS |
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| 58 | # define FF_TIMER_UNITS "UNITS" |
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| 59 | #endif |
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| 60 | |||
| 61 | #ifdef AV_READ_TIME |
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| 62 | #define START_TIMER \ |
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| 63 | uint64_t tend; \ |
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| 64 | uint64_t tstart = AV_READ_TIME(); \ |
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| 65 | |||
| 66 | #define STOP_TIMER(id) \ |
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| 67 | tend = AV_READ_TIME(); \ |
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| 68 | { \ |
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| 69 | static uint64_t tsum = 0; \ |
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| 70 | static int tcount = 0; \ |
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| 71 | static int tskip_count = 0; \ |
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| 72 | static int thistogram[32] = {0}; \ |
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| 73 | thistogram[av_log2(tend - tstart)]++; \ |
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| 74 | if (tcount < 2 || \ |
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| 75 | tend - tstart < 8 * tsum / tcount || \ |
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| 76 | tend - tstart < 2000) { \ |
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| 77 | tsum+= tend - tstart; \ |
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| 78 | tcount++; \ |
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| 79 | } else \ |
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| 80 | tskip_count++; \ |
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| 81 | if (((tcount + tskip_count) & (tcount + tskip_count - 1)) == 0) { \ |
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| 82 | int i; \ |
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| 83 | av_log(NULL, AV_LOG_ERROR, \ |
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| 84 | "%7"PRIu64" " FF_TIMER_UNITS " in %s,%8d runs,%7d skips", \ |
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| 85 | tsum * 10 / tcount, id, tcount, tskip_count); \ |
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| 86 | for (i = 0; i < 32; i++) \ |
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| 87 | av_log(NULL, AV_LOG_VERBOSE, " %2d", av_log2(2*thistogram[i]));\ |
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| 88 | av_log(NULL, AV_LOG_ERROR, "\n"); \ |
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| 89 | } \ |
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| 90 | } |
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| 91 | #else |
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| 92 | #define START_TIMER |
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| 93 | #define STOP_TIMER(id) { } |
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| 94 | #endif |
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| 95 | |||
| 96 | #endif /* AVUTIL_TIMER_H */ |