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| Rev | Author | Line No. | Line |
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| 2 | pj | 1 | |
| 2 | /* |
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| 3 | * Copyright (c) 1997-1999 Massachusetts Institute of Technology |
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| 4 | * |
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| 5 | * This program is free software; you can redistribute it and/or modify |
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| 6 | * it under the terms of the GNU General Public License as published by |
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| 7 | * the Free Software Foundation; either version 2 of the License, or |
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| 8 | * (at your option) any later version. |
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| 9 | * |
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| 10 | * This program is distributed in the hope that it will be useful, |
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| 11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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| 13 | * GNU General Public License for more details. |
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| 14 | * |
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| 15 | * You should have received a copy of the GNU General Public License |
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| 16 | * along with this program; if not, write to the Free Software |
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| 17 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
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| 18 | * |
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| 19 | */ |
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| 20 | |||
| 21 | /* |
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| 22 | * timer.c -- this file measures the execution time of |
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| 23 | * ffts. This information is used by the planner. |
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| 24 | */ |
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| 25 | |||
| 26 | /* $Id: timer.c,v 1.1.1.1 2002-03-29 14:12:57 pj Exp $ */ |
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| 27 | |||
| 28 | #include <ports/time.h> |
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| 29 | #include <ports/fftw-int.h> |
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| 30 | #include <ports/math.h> |
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| 31 | #include <ports/stdlib.h> |
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| 32 | |||
| 33 | /********************* System-specific Timing Support *********************/ |
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| 34 | |||
| 35 | #if defined(HAVE_MAC_TIMER) && !defined(HAVE_MAC_PCI_TIMER) |
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| 36 | |||
| 37 | /* Use Macintosh Time Manager to get the time: */ |
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| 38 | |||
| 39 | /* |
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| 40 | * make sure compiler (CW) recognizes the pascal keywords that are in |
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| 41 | * Timer.h |
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| 42 | */ |
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| 43 | #pragma only_std_keywords off |
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| 44 | |||
| 45 | #include <ports/Timer.h> |
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| 46 | |||
| 47 | #pragma only_std_keywords reset |
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| 48 | |||
| 49 | fftw_time get_Mac_microseconds(void) |
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| 50 | { |
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| 51 | fftw_time t; |
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| 52 | UnsignedWide microsec; /* |
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| 53 | * microsec.lo and microsec.hi are |
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| 54 | * unsigned long's, and are the two parts |
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| 55 | * of a 64 bit unsigned integer |
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| 56 | */ |
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| 57 | |||
| 58 | Microseconds(µsec); /* get time in microseconds */ |
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| 59 | |||
| 60 | /* store lo and hi words into our structure: */ |
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| 61 | t.lo = microsec.lo; |
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| 62 | t.hi = microsec.hi; |
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| 63 | |||
| 64 | return t; |
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| 65 | } |
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| 66 | |||
| 67 | fftw_time fftw_time_diff(fftw_time t1, fftw_time t2) |
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| 68 | /* |
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| 69 | * This function takes the difference t1 - t2 of two 64 bit |
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| 70 | * integers, represented by the 32 bit lo and hi words. |
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| 71 | * if t1 < t2, returns 0. |
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| 72 | */ |
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| 73 | { |
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| 74 | fftw_time diff; |
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| 75 | |||
| 76 | if (t1.hi < t2.hi) { /* something is wrong...t1 < t2! */ |
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| 77 | diff.hi = diff.lo = 0; |
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| 78 | return diff; |
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| 79 | } else |
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| 80 | diff.hi = t1.hi - t2.hi; |
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| 81 | |||
| 82 | if (t1.lo < t2.lo) { |
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| 83 | if (diff.hi > 0) |
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| 84 | diff.hi -= 1; /* carry */ |
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| 85 | else { /* something is wrong...t1 < t2! */ |
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| 86 | diff.hi = diff.lo = 0; |
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| 87 | return diff; |
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| 88 | } |
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| 89 | } |
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| 90 | diff.lo = t1.lo - t2.lo; |
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| 91 | |||
| 92 | return diff; |
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| 93 | } |
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| 94 | |||
| 95 | #endif |
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| 96 | |||
| 97 | #ifdef HAVE_WIN32_TIMER |
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| 98 | #include <ports/windows.h> |
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| 99 | |||
| 100 | static LARGE_INTEGER gFreq; |
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| 101 | static int gHaveHiResTimer = 0; |
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| 102 | static int gFirstTime = 1; |
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| 103 | |||
| 104 | unsigned long GetPerfTime(void) |
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| 105 | { |
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| 106 | LARGE_INTEGER lCounter; |
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| 107 | |||
| 108 | if (gFirstTime) { |
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| 109 | gFirstTime = 0; |
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| 110 | |||
| 111 | if (QueryPerformanceFrequency(&gFreq)) { |
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| 112 | gHaveHiResTimer = 1; |
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| 113 | } |
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| 114 | } |
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| 115 | if (gHaveHiResTimer) { |
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| 116 | QueryPerformanceCounter(&lCounter); |
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| 117 | return lCounter.u.LowPart; |
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| 118 | } else { |
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| 119 | return (unsigned long) clock(); |
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| 120 | } |
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| 121 | } |
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| 122 | |||
| 123 | double GetPerfSec(double pTime) |
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| 124 | { |
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| 125 | if (gHaveHiResTimer) { |
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| 126 | return pTime / gFreq.u.LowPart; // assumes HighPart==0 |
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| 127 | |||
| 128 | } else { |
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| 129 | return pTime / CLOCKS_PER_SEC; |
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| 130 | } |
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| 131 | } |
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| 132 | |||
| 133 | #endif /* HAVE_WIN32_TIMER */ |
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| 134 | |||
| 135 | #if defined(FFTW_USE_GETTIMEOFDAY) |
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| 136 | |||
| 137 | /* timer support routines for systems having gettimeofday */ |
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| 138 | |||
| 139 | #ifdef HAVE_BSDGETTIMEOFDAY |
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| 140 | #define gettimeofday BSDgettimeofday |
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| 141 | #endif |
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| 142 | |||
| 143 | fftw_time fftw_gettimeofday_get_time(void) |
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| 144 | { |
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| 145 | struct timeval tv; |
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| 146 | gettimeofday(&tv, 0); |
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| 147 | return tv; |
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| 148 | } |
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| 149 | |||
| 150 | fftw_time fftw_gettimeofday_time_diff(fftw_time t1, fftw_time t2) |
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| 151 | { |
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| 152 | fftw_time diff; |
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| 153 | |||
| 154 | diff.tv_sec = t1.tv_sec - t2.tv_sec; |
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| 155 | diff.tv_usec = t1.tv_usec - t2.tv_usec; |
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| 156 | /* normalize */ |
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| 157 | while (diff.tv_usec < 0) { |
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| 158 | diff.tv_usec += 1000000L; |
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| 159 | diff.tv_sec -= 1; |
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| 160 | } |
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| 161 | |||
| 162 | return diff; |
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| 163 | } |
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| 164 | #endif |