[2c7eee0] | 1 | #include <cassert>
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[f9b2e73] | 2 | #include <climits>
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| 3 | #include <cstdint>
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| 4 | #include <cstdio>
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[2c7eee0] | 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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[f9b2e73] | 58 | template<typename Sleeper>
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[2c7eee0] | 59 | void wait(const uint64_t & start, bool is_tty) {
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| 60 | for(;;) {
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[f9b2e73] | 61 | Sleeper::usleep(100000);
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[2c7eee0] | 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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[f9b2e73] | 78 | #include <cstdlib>
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[2c7eee0] | 79 | #include <cstring>
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| 80 |
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[f9b2e73] | 81 | #include <algorithm>
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| 82 |
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[2c7eee0] | 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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[c4241b6] | 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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[2c7eee0] | 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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[c4241b6] | 242 | for(size_t i = 0; i < opt_count; i++) {
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[2c7eee0] | 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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[c4241b6] | 272 | for(size_t i = 0; i < opt_count; i++) {
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[2c7eee0] | 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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[c4241b6] | 295 | [[fallthrough]];
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[2c7eee0] | 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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[c4241b6] | 299 | for(size_t i = 0; i < opt_count; i++) {
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[2c7eee0] | 300 | if(opt == options[i].short_name) {
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| 301 | const char * arg = optarg ? optarg : "";
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[c4241b6] | 302 | if( arg[0] == '=' ) { arg++; }
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[2c7eee0] | 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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[c4241b6] | 337 | for(size_t i = 0; i < opt_count; i++) {
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[2c7eee0] | 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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[c4241b6] | 356 | for(size_t i = 0; i < opt_count; i++) {
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[2c7eee0] | 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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