void Params::usage(std::ostream& os) const
{
os << "Usage: " << progname()
<< " [ options ] [ action ] file ...\n\n"
<< "Manipulate the Exif metadata of images.\n";
}
/* be helpful (or maybe downright rude:-) */
void erts_usage(void)
{
int this_rel = this_rel_num();
erts_fprintf(stderr, "Usage: %s [flags] [ -- [init_args] ]\n", progname(program));
erts_fprintf(stderr, "The flags are:\n\n");
/* erts_fprintf(stderr, "-# number set the number of items to be used in traces etc\n"); */
erts_fprintf(stderr, "-a size suggested stack size in kilo words for threads\n");
erts_fprintf(stderr, " in the async-thread pool, valid range is [%d-%d]\n",
ERTS_ASYNC_THREAD_MIN_STACK_SIZE,
ERTS_ASYNC_THREAD_MAX_STACK_SIZE);
erts_fprintf(stderr, "-A number set number of threads in async thread pool,\n");
erts_fprintf(stderr, " valid range is [0-%d]\n",
ERTS_MAX_NO_OF_ASYNC_THREADS);
erts_fprintf(stderr, "-B[c|d|i] c to have Ctrl-c interrupt the Erlang shell,\n");
erts_fprintf(stderr, " d (or no extra option) to disable the break\n");
erts_fprintf(stderr, " handler, i to ignore break signals\n");
/* erts_fprintf(stderr, "-b func set the boot function (default boot)\n"); */
erts_fprintf(stderr, "-c disable continuous date/time correction with\n");
erts_fprintf(stderr, " respect to uptime\n");
erts_fprintf(stderr, "-d don't write a crash dump for internally detected errors\n");
erts_fprintf(stderr, " (halt(String) will still produce a crash dump)\n");
erts_fprintf(stderr, "-fn[u|a|l] Control how filenames are interpreted\n");
erts_fprintf(stderr, "-hms size set minimum heap size in words (default %d)\n",
H_DEFAULT_SIZE);
erts_fprintf(stderr, "-hmbs size set minimum binary virtual heap size in words (default %d)\n",
VH_DEFAULT_SIZE);
/* erts_fprintf(stderr, "-i module set the boot module (default init)\n"); */
erts_fprintf(stderr, "-K boolean enable or disable kernel poll\n");
erts_fprintf(stderr, "-n[s|a|d] Control behavior of signals to ports\n");
erts_fprintf(stderr, " Note that this flag is deprecated!\n");
erts_fprintf(stderr, "-M<X> <Y> memory allocator switches,\n");
erts_fprintf(stderr, " see the erts_alloc(3) documentation for more info.\n");
erts_fprintf(stderr, "-pc <set> Control what characters are considered printable (default latin1)\n");
erts_fprintf(stderr, "-P number set maximum number of processes on this node,\n");
erts_fprintf(stderr, " valid range is [%d-%d]\n",
ERTS_MIN_PROCESSES, ERTS_MAX_PROCESSES);
erts_fprintf(stderr, "-Q number set maximum number of ports on this node,\n");
erts_fprintf(stderr, " valid range is [%d-%d]\n",
ERTS_MIN_PORTS, ERTS_MAX_PORTS);
erts_fprintf(stderr, "-R number set compatibility release number,\n");
erts_fprintf(stderr, " valid range [%d-%d]\n",
this_rel-2, this_rel);
erts_fprintf(stderr, "-r force ets memory block to be moved on realloc\n");
erts_fprintf(stderr, "-rg amount set reader groups limit\n");
erts_fprintf(stderr, "-sbt type set scheduler bind type, valid types are:\n");
erts_fprintf(stderr, "-stbt type u|ns|ts|ps|s|nnts|nnps|tnnps|db\n");
erts_fprintf(stderr, "-sbwt val set scheduler busy wait threshold, valid values are:\n");
erts_fprintf(stderr, " none|very_short|short|medium|long|very_long.\n");
erts_fprintf(stderr, "-scl bool enable/disable compaction of scheduler load,\n");
erts_fprintf(stderr, " see the erl(1) documentation for more info.\n");
erts_fprintf(stderr, "-sct cput set cpu topology,\n");
erts_fprintf(stderr, " see the erl(1) documentation for more info.\n");
erts_fprintf(stderr, "-sws val set scheduler wakeup strategy, valid values are:\n");
erts_fprintf(stderr, " default|legacy.\n");
erts_fprintf(stderr, "-swct val set scheduler wake cleanup threshold, valid values are:\n");
erts_fprintf(stderr, " very_lazy|lazy|medium|eager|very_eager.\n");
erts_fprintf(stderr, "-swt val set scheduler wakeup threshold, valid values are:\n");
erts_fprintf(stderr, " very_low|low|medium|high|very_high.\n");
erts_fprintf(stderr, "-sss size suggested stack size in kilo words for scheduler threads,\n");
erts_fprintf(stderr, " valid range is [%d-%d]\n",
ERTS_SCHED_THREAD_MIN_STACK_SIZE,
ERTS_SCHED_THREAD_MAX_STACK_SIZE);
erts_fprintf(stderr, "-spp Bool set port parallelism scheduling hint\n");
erts_fprintf(stderr, "-S n1:n2 set number of schedulers (n1), and number of\n");
erts_fprintf(stderr, " schedulers online (n2), valid range for both\n");
erts_fprintf(stderr, " numbers are [1-%d]\n",
ERTS_MAX_NO_OF_SCHEDULERS);
erts_fprintf(stderr, "-t size set the maximum number of atoms the "
"emulator can handle\n");
erts_fprintf(stderr, " valid range is [%d-%d]\n",
MIN_ATOM_TABLE_SIZE, MAX_ATOM_TABLE_SIZE);
erts_fprintf(stderr, "-T number set modified timing level,\n");
erts_fprintf(stderr, " valid range is [0-%d]\n",
ERTS_MODIFIED_TIMING_LEVELS-1);
erts_fprintf(stderr, "-V print Erlang version\n");
erts_fprintf(stderr, "-v turn on chatty mode (GCs will be reported etc)\n");
erts_fprintf(stderr, "-W<i|w> set error logger warnings mapping,\n");
erts_fprintf(stderr, " see error_logger documentation for details\n");
erts_fprintf(stderr, "-zdbbl size set the distribution buffer busy limit in kilobytes\n");
erts_fprintf(stderr, " valid range is [1-%d]\n", INT_MAX/1024);
erts_fprintf(stderr, "\n");
erts_fprintf(stderr, "Note that if the emulator is started with erlexec (typically\n");
erts_fprintf(stderr, "from the erl script), these flags should be specified with +.\n");
erts_fprintf(stderr, "\n\n");
erl_exit(-1, "");
}
