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/* Copyright (C) 2002 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, write to the Free
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
02111-1307 USA. */
#include <argp.h>
#define OPT_TO_THREAD 300
#define OPT_TO_PROCESS 301
#define OPT_SYNC_SIGNAL 302
#define OPT_SYNC_JOIN 303
#define OPT_TOPLEVEL 304
static const struct argp_option options[] =
{
{ NULL, 0, NULL, 0, "\
This is a test for threads so we allow ther user to selection the number of \
threads which are used at any one time. Independently the total number of \
rounds can be selected. This is the total number of threads which will have \
run when the process terminates:" },
{ "threads", 't', "NUMBER", 0, "Number of threads used at once" },
{ "starts", 's', "NUMBER", 0, "Total number of working threads" },
{ "toplevel", OPT_TOPLEVEL, "NUMBER", 0,
"Number of toplevel threads which start the other threads; this \
implies --sync-join" },
{ NULL, 0, NULL, 0, "\
Each thread can do one of two things: sleep or do work. The latter is 100% \
CPU bound. The work load is the probability a thread does work. All values \
from zero to 100 (inclusive) are valid. How often each thread repeats this \
can be determined by the number of rounds. The work cost determines how long \
each work session (not sleeping) takes. If it is zero a thread would \
effectively nothing. By setting the number of rounds to zero the thread \
does no work at all and pure thread creation times can be measured." },
{ "workload", 'w', "PERCENT", 0, "Percentage of time spent working" },
{ "workcost", 'c', "NUMBER", 0,
"Factor in the cost of each round of working" },
{ "rounds", 'r', "NUMBER", 0, "Number of rounds each thread runs" },
{ NULL, 0, NULL, 0, "\
There are a number of different methods how thread creation can be \
synchronized. Synchronization is necessary since the number of concurrently \
running threads is limited." },
{ "sync-signal", OPT_SYNC_SIGNAL, NULL, 0,
"Synchronize using a signal (default)" },
{ "sync-join", OPT_SYNC_JOIN, NULL, 0, "Synchronize using pthread_join" },
{ NULL, 0, NULL, 0, "\
One parameter for each threads execution is the size of the stack. If this \
parameter is not used the system's default stack size is used. If many \
threads are used the stack size should be chosen quite small." },
{ "stacksize", 'S', "BYTES", 0, "Size of threads stack" },
{ "guardsize", 'g', "BYTES", 0,
"Size of stack guard area; must fit into the stack" },
{ NULL, 0, NULL, 0, "Signal options:" },
{ "to-thread", OPT_TO_THREAD, NULL, 0, "Send signal to main thread" },
{ "to-process", OPT_TO_PROCESS, NULL, 0,
"Send signal to process (default)" },
{ NULL, 0, NULL, 0, "Administrative options:" },
{ "progress", 'p', NULL, 0, "Show signs of progress" },
{ "timing", 'T', NULL, 0,
"Measure time from startup to the last thread finishing" },
{ NULL, 0, NULL, 0, NULL }
};
/* Prototype for option handler. */
static error_t parse_opt (int key, char *arg, struct argp_state *state);
/* Data structure to communicate with argp functions. */
static struct argp argp =
{
options, parse_opt
};
int
main (void)
{
int argc = 2;
char *argv[3] = { (char *) "tst-argp1", (char *) "--help", NULL };
int remaining;
/* Parse and process arguments. */
argp_parse (&argp, argc, argv, 0, &remaining, NULL);
return 0;
}
/* Handle program arguments. */
static error_t
parse_opt (int key, char *arg, struct argp_state *state)
{
return ARGP_ERR_UNKNOWN;
}
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