1 | #include <cassert>
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2 | #include <climits>
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3 | #include <cstdint>
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4 | #include <cstdio>
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5 |
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6 | #include <time.h> // timespec
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7 | #include <sys/time.h> // timeval
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8 |
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9 | enum { TIMEGRAN = 1000000000LL }; // nanosecond granularity, except for timeval
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10 |
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11 |
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12 | volatile bool stop = false;
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13 | bool clock_mode;
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14 | double duration = -1;
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15 | unsigned long long stop_count = 0;
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16 | unsigned nprocs = 1;
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17 | unsigned nthreads = 1;
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18 |
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19 | volatile unsigned long long threads_left;
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20 |
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21 | #define BENCH_OPT \
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22 | {'d', "duration", "Duration of the experiments in seconds", duration }, \
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23 | {'i', "iterations", "Number of iterations of the experiments", stop_count }, \
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24 | {'t', "nthreads", "Number of threads to use", nthreads }, \
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25 | {'p', "nprocs", "Number of processors to use", nprocs }
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26 |
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27 | #define BENCH_OPT_PARSE(name) \
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28 | { \
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29 | int opt_cnt = sizeof(opt) / sizeof(option_t); \
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30 | char **left; \
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31 | parse_args( argc, argv, opt, opt_cnt, "[OPTIONS]...\n" name, &left ); \
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32 | if(duration > 0 && stop_count > 0) { \
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33 | fprintf(stderr, "--duration and --iterations cannot be used together\n"); \
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34 | print_args_usage(argc, argv, opt, opt_cnt, "[OPTIONS]...\n" name, true); \
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35 | } else if(duration > 0) { \
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36 | clock_mode = true; \
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37 | stop_count = 0xFFFFFFFFFFFFFFFF; \
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38 | printf("Running for %lf seconds\n", duration); \
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39 | } else if(stop_count > 0) { \
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40 | clock_mode = false; \
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41 | printf("Running for %llu iterations\n", stop_count); \
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42 | } else { \
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43 | duration = 5; clock_mode = true;\
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44 | printf("Running for %lf seconds\n", duration); \
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45 | } \
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46 | }
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47 |
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48 | uint64_t getTimeNsec() {
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49 | timespec curr;
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50 | clock_gettime( CLOCK_REALTIME, &curr );
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51 | return (int64_t)curr.tv_sec * TIMEGRAN + curr.tv_nsec;
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52 | }
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53 |
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54 | uint64_t to_miliseconds( uint64_t durtn ) { return durtn / (TIMEGRAN / 1000LL); }
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55 | double to_fseconds(uint64_t durtn ) { return durtn / (double)TIMEGRAN; }
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56 | uint64_t from_fseconds(double sec) { return sec * TIMEGRAN; }
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57 |
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58 | template<typename Sleeper>
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59 | void wait(const uint64_t & start, bool is_tty) {
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60 | for(;;) {
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61 | Sleeper::usleep(100000);
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62 | uint64_t end = getTimeNsec();
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63 | uint64_t delta = end - start;
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64 | if(is_tty) {
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65 | printf(" %.1f\r", to_fseconds(delta));
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66 | fflush(stdout);
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67 | }
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68 | if( clock_mode && delta >= from_fseconds(duration) ) {
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69 | break;
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70 | }
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71 | else if( !clock_mode && threads_left == 0 ) {
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72 | break;
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73 | }
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74 | }
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75 | }
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76 |
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77 | // ==========================================================================================
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78 | #include <cstdlib>
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79 | #include <cstring>
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80 |
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81 | #include <algorithm>
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82 |
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83 | //-----------------------------------------------------------------------------
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84 | // Typed argument parsing
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85 | bool parse_yesno(const char * arg, bool & value ) {
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86 | if(strcmp(arg, "yes") == 0) {
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87 | value = true;
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88 | return true;
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89 | }
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90 |
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91 | if(strcmp(arg, "no") == 0) {
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92 | value = false;
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93 | return true;
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94 | }
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95 |
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96 | return false;
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97 | }
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98 |
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99 | bool parse_truefalse(const char * arg, bool & value) {
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100 | if(strcmp(arg, "true") == 0) {
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101 | value = true;
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102 | return true;
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103 | }
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104 |
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105 | if(strcmp(arg, "false") == 0) {
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106 | value = false;
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107 | return true;
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108 | }
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109 |
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110 | return false;
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111 | }
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112 |
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113 | bool parse_settrue (const char *, bool & value ) {
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114 | value = true;
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115 | return true;
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116 | }
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117 |
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118 | bool parse_setfalse(const char *, bool & value ) {
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119 | value = false;
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120 | return true;
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121 | }
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122 |
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123 | bool parse(const char * arg, const char * & value ) {
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124 | value = arg;
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125 | return true;
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126 | }
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127 |
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128 | bool parse(const char * arg, int & value) {
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129 | char * end;
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130 | int r = strtoll(arg, &end, 10);
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131 | if(*end != '\0') return false;
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132 |
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133 | value = r;
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134 | return true;
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135 | }
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136 |
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137 | bool parse(const char * arg, unsigned & value) {
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138 | char * end;
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139 | unsigned long long int r = strtoull(arg, &end, 10);
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140 | if(*end != '\0') return false;
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141 | if(r > UINT_MAX) return false;
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142 |
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143 | value = r;
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144 | return true;
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145 | }
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146 |
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147 | bool parse(const char * arg, unsigned long & value) {
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148 | char * end;
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149 | unsigned long long int r = strtoull(arg, &end, 10);
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150 | if(*end != '\0') return false;
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151 | if(r > ULONG_MAX) return false;
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152 |
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153 | value = r;
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154 | return true;
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155 | }
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156 |
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157 | bool parse(const char * arg, unsigned long long & value) {
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158 | char * end;
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159 | unsigned long long int r = strtoull(arg, &end, 10);
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160 | if(*end != '\0') return false;
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161 | if(r > ULLONG_MAX) return false;
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162 |
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163 | value = r;
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164 | return true;
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165 | }
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166 |
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167 | bool parse(const char * arg, double & value) {
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168 | char * end;
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169 | double r = strtod(arg, &end);
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170 | if(*end != '\0') return false;
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171 |
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172 | value = r;
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173 | return true;
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174 | }
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175 |
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176 | //-----------------------------------------------------------------------------
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177 | struct option_t {
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178 | char short_name;
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179 | const char * long_name;
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180 | const char * help;
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181 | void * variable;
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182 | bool (*parse_fun)(const char *, void * );
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183 |
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184 | template<typename T>
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185 | inline option_t( char short_name, const char * long_name, const char * help, T & variable ) {
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186 | this->short_name = short_name;
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187 | this->long_name = long_name;
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188 | this->help = help;
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189 | this->variable = reinterpret_cast<void*>(&variable);
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190 | this->parse_fun = reinterpret_cast<bool (*)(const char *, void * )>(static_cast<bool (*)(const char *, T & )>(parse));
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191 | }
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192 |
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193 | template<typename T>
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194 | inline option_t( char short_name, const char * long_name, const char * help, T & variable, bool (*parse)(const char *, T & )) {
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195 | this->short_name = short_name;
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196 | this->long_name = long_name;
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197 | this->help = help;
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198 | this->variable = reinterpret_cast<void*>(&variable);
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199 | this->parse_fun = reinterpret_cast<bool (*)(const char *, void * )>(parse);
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200 | }
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201 | };
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202 |
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203 | extern option_t last_option;
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204 |
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205 |
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206 | //-----------------------------------------------------------------------------
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207 | #include <cstdint>
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208 | #include <climits>
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209 | #include <errno.h>
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210 | #include <unistd.h>
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211 | extern "C" {
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212 | #include <getopt.h>
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213 | #include <sys/ioctl.h>
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214 |
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215 | extern FILE * stderr;
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216 | extern FILE * stdout;
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217 |
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218 | extern int fileno(FILE *stream);
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219 |
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220 | extern int fprintf ( FILE * stream, const char * format, ... );
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221 |
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222 | extern long long int strtoll (const char* str, char** endptr, int base);
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223 | extern unsigned long long int strtoull(const char* str, char** endptr, int base);
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224 | extern double strtod (const char* str, char** endptr);
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225 | }
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226 |
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227 | static void usage(char * cmd, option_t options[], size_t opt_count, const char * usage, FILE * out) __attribute__ ((noreturn));
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228 |
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229 | //-----------------------------------------------------------------------------
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230 | // getopt_long wrapping
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231 | void parse_args(
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232 | int argc,
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233 | char * argv[],
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234 | option_t options[],
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235 | size_t opt_count,
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236 | const char * usage_msg,
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237 | char ** * left
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238 | ) {
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239 | struct option optarr[opt_count + 2];
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240 | {
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241 | int idx = 0;
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242 | for(size_t i = 0; i < opt_count; i++) {
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243 | if(options[i].long_name) {
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244 | optarr[idx].name = options[i].long_name;
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245 | optarr[idx].flag = nullptr;
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246 | optarr[idx].val = options[i].short_name;
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247 | if( ((intptr_t)options[i].parse_fun) == ((intptr_t)parse_settrue)
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248 | || ((intptr_t)options[i].parse_fun) == ((intptr_t)parse_setfalse) ) {
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249 | optarr[idx].has_arg = no_argument;
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250 | } else {
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251 | optarr[idx].has_arg = required_argument;
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252 | }
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253 | idx++;
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254 | }
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255 | }
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256 | optarr[idx+0].name = "help";
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257 | optarr[idx+0].has_arg = no_argument;
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258 | optarr[idx+0].flag = 0;
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259 | optarr[idx+0].val = 'h';
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260 | optarr[idx+1].name = 0;
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261 | optarr[idx+1].has_arg = no_argument;
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262 | optarr[idx+1].flag = 0;
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263 | optarr[idx+1].val = 0;
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264 | }
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265 |
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266 | char optstring[opt_count * 3];
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267 | for(auto & o : optstring) {
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268 | o = '\0';
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269 | }
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270 | {
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271 | int idx = 0;
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272 | for(size_t i = 0; i < opt_count; i++) {
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273 | optstring[idx] = options[i].short_name;
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274 | idx++;
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275 | if( ((intptr_t)options[i].parse_fun) != ((intptr_t)parse_settrue)
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276 | && ((intptr_t)options[i].parse_fun) != ((intptr_t)parse_setfalse) ) {
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277 | optstring[idx] = ':';
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278 | idx++;
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279 | }
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280 | }
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281 | optstring[idx+0] = 'h';
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282 | optstring[idx+1] = '\0';
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283 | }
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284 |
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285 | FILE * out = stderr;
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286 | for(;;) {
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287 | int idx = 0;
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288 | int opt = getopt_long(argc, argv, optstring, optarr, &idx);
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289 | switch(opt) {
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290 | case -1:
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291 | if(left != nullptr) *left = argv + optind;
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292 | return;
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293 | case 'h':
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294 | out = stdout;
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295 | [[fallthrough]];
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296 | case '?':
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297 | usage(argv[0], options, opt_count, usage_msg, out);
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298 | default:
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299 | for(size_t i = 0; i < opt_count; i++) {
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300 | if(opt == options[i].short_name) {
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301 | const char * arg = optarg ? optarg : "";
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302 | if( arg[0] == '=' ) { arg++; }
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303 | bool success = options[i].parse_fun( arg, options[i].variable );
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304 | if(success) goto NEXT_ARG;
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305 |
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306 | fprintf(out, "Argument '%s' for option %c could not be parsed\n\n", arg, (char)opt);
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307 | usage(argv[0], options, opt_count, usage_msg, out);
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308 | }
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309 | }
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310 | std::abort();
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311 | }
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312 | NEXT_ARG:;
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313 | }
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314 | }
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315 |
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316 | //-----------------------------------------------------------------------------
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317 | // Print usage
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318 | static void printopt(FILE * out, int width, int max, char sn, const char * ln, const char * help) {
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319 | int hwidth = max - (11 + width);
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320 | if(hwidth <= 0) hwidth = max;
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321 |
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322 | fprintf(out, " -%c, --%-*s %.*s\n", sn, width, ln, hwidth, help);
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323 | for(;;) {
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324 | help += std::min(strlen(help), (unsigned long)hwidth);
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325 | if('\0' == *help) break;
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326 | fprintf(out, "%*s%.*s\n", width + 11, "", hwidth, help);
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327 | }
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328 | }
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329 |
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330 | __attribute__((noreturn)) void print_args_usage(int , char * argv[], option_t options[], size_t opt_count, const char * usage_msg, bool error) {
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331 | usage(argv[0], options, opt_count, usage_msg, error ? stderr : stdout);
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332 | }
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333 |
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334 | static __attribute__((noreturn)) void usage(char * cmd, option_t options[], size_t opt_count, const char * help, FILE * out) {
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335 | int width = 0;
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336 | {
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337 | for(size_t i = 0; i < opt_count; i++) {
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338 | if(options[i].long_name) {
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339 | int w = strlen(options[i].long_name);
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340 | if(w > width) width = w;
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341 | }
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342 | }
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343 | }
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344 |
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345 | int max_width = 1000000;
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346 | int outfd = fileno(out);
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347 | if(isatty(outfd)) {
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348 | struct winsize size;
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349 | int ret = ioctl(outfd, TIOCGWINSZ, &size);
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350 | if(ret < 0) abort(); // "ioctl error: (%d) %s\n", (int)errno, strerror(errno)
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351 | max_width = size.ws_col;
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352 | }
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353 |
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354 | fprintf(out, "Usage:\n %s %s\n", cmd, help);
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355 |
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356 | for(size_t i = 0; i < opt_count; i++) {
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357 | printopt(out, width, max_width, options[i].short_name, options[i].long_name, options[i].help);
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358 | }
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359 | fprintf(out, " -%c, --%-*s %s\n", 'h', width, "help", "print this help message");
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360 | exit(out == stdout ? 0 : 1);
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361 | }
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362 |
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