[216] | 1 | /************************************************************************* |
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| 2 | * * |
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| 3 | * Open Dynamics Engine, Copyright (C) 2001,2002 Russell L. Smith. * |
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| 4 | * All rights reserved. Email: russ@q12.org Web: www.q12.org * |
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| 5 | * * |
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| 6 | * This library is free software; you can redistribute it and/or * |
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| 7 | * modify it under the terms of EITHER: * |
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| 8 | * (1) The GNU Lesser General Public License as published by the Free * |
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| 9 | * Software Foundation; either version 2.1 of the License, or (at * |
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| 10 | * your option) any later version. The text of the GNU Lesser * |
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| 11 | * General Public License is included with this library in the * |
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| 12 | * file LICENSE.TXT. * |
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| 13 | * (2) The BSD-style license that is included with this library in * |
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| 14 | * the file LICENSE-BSD.TXT. * |
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| 15 | * * |
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| 16 | * This library is distributed in the hope that it will be useful, * |
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| 17 | * but WITHOUT ANY WARRANTY; without even the implied warranty of * |
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| 18 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the files * |
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| 19 | * LICENSE.TXT and LICENSE-BSD.TXT for more details. * |
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| 20 | * * |
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| 21 | *************************************************************************/ |
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| 22 | |
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| 23 | /* |
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| 24 | |
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| 25 | TODO |
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| 26 | ---- |
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| 27 | |
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| 28 | * gettimeofday() and the pentium time stamp counter return the real time, |
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| 29 | not the process time. fix this somehow! |
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| 30 | |
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| 31 | */ |
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| 32 | |
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| 33 | #include <ode/common.h> |
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| 34 | #include <ode/timer.h> |
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| 35 | |
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| 36 | // misc defines |
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| 37 | #define ALLOCA dALLOCA16 |
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| 38 | |
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| 39 | //**************************************************************************** |
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| 40 | // implementation for windows based on the multimedia performance counter. |
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| 41 | |
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| 42 | #ifdef WIN32 |
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| 43 | |
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| 44 | #include "windows.h" |
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| 45 | |
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| 46 | static inline void getClockCount (unsigned long cc[2]) |
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| 47 | { |
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| 48 | LARGE_INTEGER a; |
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| 49 | QueryPerformanceCounter (&a); |
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| 50 | cc[0] = a.LowPart; |
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| 51 | cc[1] = a.HighPart; |
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| 52 | } |
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| 53 | |
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| 54 | |
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| 55 | static inline void serialize() |
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| 56 | { |
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| 57 | } |
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| 58 | |
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| 59 | |
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| 60 | static inline double loadClockCount (unsigned long cc[2]) |
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| 61 | { |
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| 62 | LARGE_INTEGER a; |
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| 63 | a.LowPart = cc[0]; |
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| 64 | a.HighPart = cc[1]; |
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| 65 | return double(a.QuadPart); |
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| 66 | } |
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| 67 | |
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| 68 | |
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| 69 | double dTimerResolution() |
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| 70 | { |
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| 71 | return 1.0/dTimerTicksPerSecond(); |
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| 72 | } |
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| 73 | |
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| 74 | |
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| 75 | double dTimerTicksPerSecond() |
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| 76 | { |
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| 77 | static int query=0; |
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| 78 | static double hz=0.0; |
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| 79 | if (!query) { |
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| 80 | LARGE_INTEGER a; |
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| 81 | QueryPerformanceFrequency (&a); |
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| 82 | hz = double(a.QuadPart); |
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| 83 | query = 1; |
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| 84 | } |
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| 85 | return hz; |
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| 86 | } |
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| 87 | |
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| 88 | #endif |
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| 89 | |
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| 90 | //**************************************************************************** |
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| 91 | // implementation based on the pentium time stamp counter. the timer functions |
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| 92 | // can be serializing or non-serializing. serializing will ensure that all |
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| 93 | // instructions have executed and data has been written back before the cpu |
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| 94 | // time stamp counter is read. the CPUID instruction is used to serialize. |
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| 95 | |
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| 96 | #if defined(PENTIUM) && !defined(WIN32) |
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| 97 | |
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| 98 | // we need to know the clock rate so that the timing function can report |
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| 99 | // accurate times. this number only needs to be set accurately if we're |
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| 100 | // doing performance tests and care about real-world time numbers - otherwise, |
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| 101 | // just ignore this. i have not worked out how to determine this number |
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| 102 | // automatically yet. |
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| 103 | |
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| 104 | #define PENTIUM_HZ (500e6) |
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| 105 | |
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| 106 | static inline void getClockCount (unsigned long cc[2]) |
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| 107 | { |
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| 108 | #ifndef X86_64_SYSTEM |
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| 109 | asm volatile ( |
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| 110 | "rdtsc\n" |
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| 111 | "movl %%eax,(%%esi)\n" |
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| 112 | "movl %%edx,4(%%esi)\n" |
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| 113 | : : "S" (cc) : "%eax","%edx","cc","memory"); |
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| 114 | #else |
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| 115 | asm volatile ( |
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| 116 | "rdtsc\n" |
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| 117 | "movl %%eax,(%%rsi)\n" |
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| 118 | "movl %%edx,4(%%rsi)\n" |
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| 119 | : : "S" (cc) : "%eax","%edx","cc","memory"); |
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| 120 | #endif |
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| 121 | } |
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| 122 | |
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| 123 | |
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| 124 | static inline void serialize() |
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| 125 | { |
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| 126 | #ifndef X86_64_SYSTEM |
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| 127 | asm volatile ( |
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| 128 | "mov $0,%%eax\n" |
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| 129 | "push %%ebx\n" |
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| 130 | "cpuid\n" |
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| 131 | "pop %%ebx\n" |
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| 132 | : : : "%eax","%ecx","%edx","cc","memory"); |
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| 133 | #else |
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| 134 | asm volatile ( |
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| 135 | "mov $0,%%rax\n" |
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| 136 | "push %%rbx\n" |
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| 137 | "cpuid\n" |
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| 138 | "pop %%rbx\n" |
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| 139 | : : : "%rax","%rcx","%rdx","cc","memory"); |
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| 140 | #endif |
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| 141 | } |
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| 142 | |
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| 143 | |
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| 144 | static inline double loadClockCount (unsigned long a[2]) |
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| 145 | { |
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| 146 | double ret; |
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| 147 | #ifndef X86_64_SYSTEM |
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| 148 | asm volatile ("fildll %1; fstpl %0" : "=m" (ret) : "m" (a[0]) : |
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| 149 | "cc","memory"); |
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| 150 | #else |
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| 151 | asm volatile ("fildll %1; fstpl %0" : "=m" (ret) : "m" (a[0]) : |
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| 152 | "cc","memory"); |
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| 153 | #endif |
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| 154 | return ret; |
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| 155 | } |
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| 156 | |
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| 157 | |
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| 158 | double dTimerResolution() |
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| 159 | { |
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| 160 | return 1.0/PENTIUM_HZ; |
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| 161 | } |
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| 162 | |
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| 163 | |
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| 164 | double dTimerTicksPerSecond() |
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| 165 | { |
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| 166 | return PENTIUM_HZ; |
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| 167 | } |
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| 168 | |
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| 169 | #endif |
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| 170 | |
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| 171 | //**************************************************************************** |
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| 172 | // otherwise, do the implementation based on gettimeofday(). |
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| 173 | |
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| 174 | #if !defined(PENTIUM) && !defined(WIN32) |
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| 175 | |
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| 176 | #ifndef macintosh |
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| 177 | |
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| 178 | #include <sys/time.h> |
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| 179 | #include <unistd.h> |
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| 180 | |
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| 181 | |
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| 182 | static inline void getClockCount (unsigned long cc[2]) |
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| 183 | { |
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| 184 | struct timeval tv; |
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| 185 | gettimeofday (&tv,0); |
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| 186 | cc[0] = tv.tv_usec; |
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| 187 | cc[1] = tv.tv_sec; |
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| 188 | } |
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| 189 | |
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| 190 | #else // macintosh |
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| 191 | |
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| 192 | #include <MacTypes.h> |
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| 193 | #include <Timer.h> |
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| 194 | |
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| 195 | static inline void getClockCount (unsigned long cc[2]) |
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| 196 | { |
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| 197 | UnsignedWide ms; |
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| 198 | Microseconds (&ms); |
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| 199 | cc[1] = ms.lo / 1000000; |
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| 200 | cc[0] = ms.lo - ( cc[1] * 1000000 ); |
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| 201 | } |
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| 202 | |
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| 203 | #endif |
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| 204 | |
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| 205 | |
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| 206 | static inline void serialize() |
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| 207 | { |
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| 208 | } |
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| 209 | |
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| 210 | |
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| 211 | static inline double loadClockCount (unsigned long a[2]) |
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| 212 | { |
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| 213 | return a[1]*1.0e6 + a[0]; |
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| 214 | } |
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| 215 | |
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| 216 | |
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| 217 | double dTimerResolution() |
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| 218 | { |
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| 219 | unsigned long cc1[2],cc2[2]; |
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| 220 | getClockCount (cc1); |
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| 221 | do { |
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| 222 | getClockCount (cc2); |
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| 223 | } |
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| 224 | while (cc1[0]==cc2[0] && cc1[1]==cc2[1]); |
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| 225 | do { |
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| 226 | getClockCount (cc1); |
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| 227 | } |
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| 228 | while (cc1[0]==cc2[0] && cc1[1]==cc2[1]); |
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| 229 | double t1 = loadClockCount (cc1); |
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| 230 | double t2 = loadClockCount (cc2); |
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| 231 | return (t1-t2) / dTimerTicksPerSecond(); |
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| 232 | } |
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| 233 | |
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| 234 | |
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| 235 | double dTimerTicksPerSecond() |
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| 236 | { |
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| 237 | return 1000000; |
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| 238 | } |
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| 239 | |
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| 240 | #endif |
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| 241 | |
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| 242 | //**************************************************************************** |
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| 243 | // stop watches |
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| 244 | |
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| 245 | void dStopwatchReset (dStopwatch *s) |
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| 246 | { |
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| 247 | s->time = 0; |
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| 248 | s->cc[0] = 0; |
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| 249 | s->cc[1] = 0; |
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| 250 | } |
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| 251 | |
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| 252 | |
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| 253 | void dStopwatchStart (dStopwatch *s) |
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| 254 | { |
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| 255 | serialize(); |
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| 256 | getClockCount (s->cc); |
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| 257 | } |
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| 258 | |
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| 259 | |
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| 260 | void dStopwatchStop (dStopwatch *s) |
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| 261 | { |
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| 262 | unsigned long cc[2]; |
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| 263 | serialize(); |
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| 264 | getClockCount (cc); |
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| 265 | double t1 = loadClockCount (s->cc); |
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| 266 | double t2 = loadClockCount (cc); |
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| 267 | s->time += t2-t1; |
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| 268 | } |
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| 269 | |
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| 270 | |
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| 271 | double dStopwatchTime (dStopwatch *s) |
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| 272 | { |
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| 273 | return s->time / dTimerTicksPerSecond(); |
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| 274 | } |
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| 275 | |
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| 276 | //**************************************************************************** |
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| 277 | // code timers |
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| 278 | |
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| 279 | // maximum number of events to record |
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| 280 | #define MAXNUM 100 |
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| 281 | |
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| 282 | static int num = 0; // number of entries used in event array |
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| 283 | static struct { |
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| 284 | unsigned long cc[2]; // clock counts |
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| 285 | double total_t; // total clocks used in this slot. |
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| 286 | double total_p; // total percentage points used in this slot. |
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| 287 | int count; // number of times this slot has been updated. |
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| 288 | char *description; // pointer to static string |
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| 289 | } event[MAXNUM]; |
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| 290 | |
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| 291 | |
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| 292 | // make sure all slot totals and counts reset to 0 at start |
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| 293 | |
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| 294 | static void initSlots() |
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| 295 | { |
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| 296 | static int initialized=0; |
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| 297 | if (!initialized) { |
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| 298 | for (int i=0; i<MAXNUM; i++) { |
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| 299 | event[i].count = 0; |
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| 300 | event[i].total_t = 0; |
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| 301 | event[i].total_p = 0; |
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| 302 | } |
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| 303 | initialized = 1; |
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| 304 | } |
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| 305 | } |
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| 306 | |
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| 307 | |
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| 308 | void dTimerStart (const char *description) |
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| 309 | { |
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| 310 | initSlots(); |
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| 311 | event[0].description = const_cast<char*> (description); |
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| 312 | num = 1; |
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| 313 | serialize(); |
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| 314 | getClockCount (event[0].cc); |
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| 315 | } |
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| 316 | |
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| 317 | |
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| 318 | void dTimerNow (const char *description) |
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| 319 | { |
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| 320 | if (num < MAXNUM) { |
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| 321 | // do not serialize |
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| 322 | getClockCount (event[num].cc); |
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| 323 | event[num].description = const_cast<char*> (description); |
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| 324 | num++; |
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| 325 | } |
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| 326 | } |
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| 327 | |
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| 328 | |
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| 329 | void dTimerEnd() |
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| 330 | { |
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| 331 | if (num < MAXNUM) { |
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| 332 | serialize(); |
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| 333 | getClockCount (event[num].cc); |
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| 334 | event[num].description = "TOTAL"; |
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| 335 | num++; |
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| 336 | } |
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| 337 | } |
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| 338 | |
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| 339 | //**************************************************************************** |
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| 340 | // print report |
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| 341 | |
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| 342 | static void fprintDoubleWithPrefix (FILE *f, double a, char *fmt) |
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| 343 | { |
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| 344 | if (a >= 0.999999) { |
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| 345 | fprintf (f,fmt,a); |
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| 346 | return; |
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| 347 | } |
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| 348 | a *= 1000.0; |
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| 349 | if (a >= 0.999999) { |
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| 350 | fprintf (f,fmt,a); |
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| 351 | fprintf (f,"m"); |
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| 352 | return; |
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| 353 | } |
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| 354 | a *= 1000.0; |
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| 355 | if (a >= 0.999999) { |
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| 356 | fprintf (f,fmt,a); |
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| 357 | fprintf (f,"u"); |
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| 358 | return; |
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| 359 | } |
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| 360 | a *= 1000.0; |
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| 361 | fprintf (f,fmt,a); |
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| 362 | fprintf (f,"n"); |
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| 363 | } |
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| 364 | |
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| 365 | |
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| 366 | void dTimerReport (FILE *fout, int average) |
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| 367 | { |
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| 368 | int i; |
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| 369 | size_t maxl; |
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| 370 | double ccunit = 1.0/dTimerTicksPerSecond(); |
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| 371 | fprintf (fout,"\nTimer Report ("); |
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| 372 | fprintDoubleWithPrefix (fout,ccunit,"%.2f "); |
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| 373 | fprintf (fout,"s resolution)\n------------\n"); |
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| 374 | if (num < 1) return; |
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| 375 | |
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| 376 | // get maximum description length |
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| 377 | maxl = 0; |
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| 378 | for (i=0; i<num; i++) { |
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| 379 | size_t l = strlen (event[i].description); |
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| 380 | if (l > maxl) maxl = l; |
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| 381 | } |
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| 382 | |
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| 383 | // calculate total time |
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| 384 | double t1 = loadClockCount (event[0].cc); |
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| 385 | double t2 = loadClockCount (event[num-1].cc); |
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| 386 | double total = t2 - t1; |
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| 387 | if (total <= 0) total = 1; |
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| 388 | |
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| 389 | // compute time difference for all slots except the last one. update totals |
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| 390 | double *times = (double*) ALLOCA (num * sizeof(double)); |
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| 391 | for (i=0; i < (num-1); i++) { |
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| 392 | double t1 = loadClockCount (event[i].cc); |
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| 393 | double t2 = loadClockCount (event[i+1].cc); |
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| 394 | times[i] = t2 - t1; |
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| 395 | event[i].count++; |
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| 396 | event[i].total_t += times[i]; |
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| 397 | event[i].total_p += times[i]/total * 100.0; |
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| 398 | } |
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| 399 | |
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| 400 | // print report (with optional averages) |
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| 401 | for (i=0; i<num; i++) { |
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| 402 | double t,p; |
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| 403 | if (i < (num-1)) { |
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| 404 | t = times[i]; |
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| 405 | p = t/total * 100.0; |
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| 406 | } |
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| 407 | else { |
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| 408 | t = total; |
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| 409 | p = 100.0; |
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| 410 | } |
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| 411 | fprintf (fout,"%-*s %7.2fms %6.2f%%",maxl,event[i].description, |
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| 412 | t*ccunit * 1000.0, p); |
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| 413 | if (average && i < (num-1)) { |
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| 414 | fprintf (fout," (avg %7.2fms %6.2f%%)", |
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| 415 | (event[i].total_t / event[i].count)*ccunit * 1000.0, |
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| 416 | event[i].total_p / event[i].count); |
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| 417 | } |
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| 418 | fprintf (fout,"\n"); |
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| 419 | } |
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| 420 | fprintf (fout,"\n"); |
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| 421 | } |
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