argp/tst-argp1.c

   1 /* Copyright (C) 2002, 2003 Free Software Foundation, Inc.
   2    This file is part of the GNU C Library.
   3    Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
   4
   5    The GNU C Library is free software; you can redistribute it and/or
   6    modify it under the terms of the GNU Lesser General Public
   7    License as published by the Free Software Foundation; either
   8    version 2.1 of the License, or (at your option) any later version.
   9
  10    The GNU C Library is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13    Lesser General Public License for more details.
  14
  15    You should have received a copy of the GNU Lesser General Public
  16    License along with the GNU C Library; if not, write to the Free
  17    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  18    02111-1307 USA.  */
  19
  20 #include <argp.h>
  21
  22
  23
  24
  25 #define OPT_TO_THREAD           300
  26 #define OPT_TO_PROCESS          301
  27 #define OPT_SYNC_SIGNAL         302
  28 #define OPT_SYNC_JOIN           303
  29 #define OPT_TOPLEVEL            304
  30
  31
  32 static const struct argp_option test_options[] =
  33   {
  34     { NULL, 0, NULL, 0, "\
  35 This is a test for threads so we allow ther user to selection the number of \
  36 threads which are used at any one time.  Independently the total number of \
  37 rounds can be selected.  This is the total number of threads which will have \
  38 run when the process terminates:" },
  39     { "threads", 't', "NUMBER", 0, "Number of threads used at once" },
  40     { "starts", 's', "NUMBER", 0, "Total number of working threads" },
  41     { "toplevel", OPT_TOPLEVEL, "NUMBER", 0,
  42       "Number of toplevel threads which start the other threads; this \
  43 implies --sync-join" },
  44
  45     { NULL, 0, NULL, 0, "\
  46 Each thread can do one of two things: sleep or do work.  The latter is 100% \
  47 CPU bound.  The work load is the probability a thread does work.  All values \
  48 from zero to 100 (inclusive) are valid.  How often each thread repeats this \
  49 can be determined by the number of rounds.  The work cost determines how long \
  50 each work session (not sleeping) takes.  If it is zero a thread would \
  51 effectively nothing.  By setting the number of rounds to zero the thread \
  52 does no work at all and pure thread creation times can be measured." },
  53     { "workload", 'w', "PERCENT", 0, "Percentage of time spent working" },
  54     { "workcost", 'c', "NUMBER", 0,
  55       "Factor in the cost of each round of working" },
  56     { "rounds", 'r', "NUMBER", 0, "Number of rounds each thread runs" },
  57
  58     { NULL, 0, NULL, 0, "\
  59 There are a number of different methods how thread creation can be \
  60 synchronized.  Synchronization is necessary since the number of concurrently \
  61 running threads is limited." },
  62     { "sync-signal", OPT_SYNC_SIGNAL, NULL, 0,
  63       "Synchronize using a signal (default)" },
  64     { "sync-join", OPT_SYNC_JOIN, NULL, 0, "Synchronize using pthread_join" },
  65
  66     { NULL, 0, NULL, 0, "\
  67 One parameter for each threads execution is the size of the stack.  If this \
  68 parameter is not used the system's default stack size is used.  If many \
  69 threads are used the stack size should be chosen quite small." },
  70     { "stacksize", 'S', "BYTES", 0, "Size of threads stack" },
  71     { "guardsize", 'g', "BYTES", 0,
  72       "Size of stack guard area; must fit into the stack" },
  73
  74     { NULL, 0, NULL, 0, "Signal options:" },
  75     { "to-thread", OPT_TO_THREAD, NULL, 0, "Send signal to main thread" },
  76     { "to-process", OPT_TO_PROCESS, NULL, 0,
  77       "Send signal to process (default)" },
  78
  79     { NULL, 0, NULL, 0, "Administrative options:" },
  80     { "progress", 'p', NULL, 0, "Show signs of progress" },
  81     { "timing", 'T', NULL, 0,
  82       "Measure time from startup to the last thread finishing" },
  83     { NULL, 0, NULL, 0, NULL }
  84   };
  85
  86 /* Prototype for option handler.  */
  87 static error_t parse_opt (int key, char *arg, struct argp_state *state);
  88
  89 /* Data structure to communicate with argp functions.  */
  90 static struct argp argp =
  91 {
  92   test_options, parse_opt
  93 };
  94
  95
  96 static int
  97 do_test (void)
  98 {
  99   int argc = 2;
 100   char *argv[3] = { (char *) "tst-argp1", (char *) "--help", NULL };
 101   int remaining;
 102
 103   /* Parse and process arguments.  */
 104   argp_parse (&argp, argc, argv, 0, &remaining, NULL);
 105
 106   return 0;
 107 }
 108
 109
 110 /* Handle program arguments.  */
 111 static error_t
 112 parse_opt (int key, char *arg, struct argp_state *state)
 113 {
 114   return ARGP_ERR_UNKNOWN;
 115 }
 116
 117 #define TEST_FUNCTION do_test ()
 118 #include "../test-skeleton.c"