1 | /* Copyright (C) 2002-2022 Free Software Foundation, Inc. |
2 | This file is part of the GNU C Library. |
3 | |
4 | The GNU C Library is free software; you can redistribute it and/or |
5 | modify it under the terms of the GNU Lesser General Public |
6 | License as published by the Free Software Foundation; either |
7 | version 2.1 of the License, or (at your option) any later version. |
8 | |
9 | The GNU C Library is distributed in the hope that it will be useful, |
10 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
12 | Lesser General Public License for more details. |
13 | |
14 | You should have received a copy of the GNU Lesser General Public |
15 | License along with the GNU C Library; if not, see |
16 | <https://www.gnu.org/licenses/>. */ |
17 | |
18 | #include <argp.h> |
19 | |
20 | |
21 | |
22 | |
23 | #define OPT_TO_THREAD 300 |
24 | #define OPT_TO_PROCESS 301 |
25 | #define OPT_SYNC_SIGNAL 302 |
26 | #define OPT_SYNC_JOIN 303 |
27 | #define OPT_TOPLEVEL 304 |
28 | |
29 | |
30 | static const struct argp_option test_options[] = |
31 | { |
32 | { NULL, 0, NULL, 0, "\ |
33 | This is a test for threads so we allow ther user to selection the number of \ |
34 | threads which are used at any one time. Independently the total number of \ |
35 | rounds can be selected. This is the total number of threads which will have \ |
36 | run when the process terminates:" }, |
37 | { "threads" , 't', "NUMBER" , 0, "Number of threads used at once" }, |
38 | { "starts" , 's', "NUMBER" , 0, "Total number of working threads" }, |
39 | { "toplevel" , OPT_TOPLEVEL, "NUMBER" , 0, |
40 | "Number of toplevel threads which start the other threads; this \ |
41 | implies --sync-join" }, |
42 | |
43 | { NULL, 0, NULL, 0, "\ |
44 | Each thread can do one of two things: sleep or do work. The latter is 100% \ |
45 | CPU bound. The work load is the probability a thread does work. All values \ |
46 | from zero to 100 (inclusive) are valid. How often each thread repeats this \ |
47 | can be determined by the number of rounds. The work cost determines how long \ |
48 | each work session (not sleeping) takes. If it is zero a thread would \ |
49 | effectively nothing. By setting the number of rounds to zero the thread \ |
50 | does no work at all and pure thread creation times can be measured." }, |
51 | { "workload" , 'w', "PERCENT" , 0, "Percentage of time spent working" }, |
52 | { "workcost" , 'c', "NUMBER" , 0, |
53 | "Factor in the cost of each round of working" }, |
54 | { "rounds" , 'r', "NUMBER" , 0, "Number of rounds each thread runs" }, |
55 | |
56 | { NULL, 0, NULL, 0, "\ |
57 | There are a number of different methods how thread creation can be \ |
58 | synchronized. Synchronization is necessary since the number of concurrently \ |
59 | running threads is limited." }, |
60 | { "sync-signal" , OPT_SYNC_SIGNAL, NULL, 0, |
61 | "Synchronize using a signal (default)" }, |
62 | { "sync-join" , OPT_SYNC_JOIN, NULL, 0, "Synchronize using pthread_join" }, |
63 | |
64 | { NULL, 0, NULL, 0, "\ |
65 | One parameter for each threads execution is the size of the stack. If this \ |
66 | parameter is not used the system's default stack size is used. If many \ |
67 | threads are used the stack size should be chosen quite small." }, |
68 | { "stacksize" , 'S', "BYTES" , 0, "Size of threads stack" }, |
69 | { "guardsize" , 'g', "BYTES" , 0, |
70 | "Size of stack guard area; must fit into the stack" }, |
71 | |
72 | { NULL, 0, NULL, 0, "Signal options:" }, |
73 | { "to-thread" , OPT_TO_THREAD, NULL, 0, "Send signal to main thread" }, |
74 | { "to-process" , OPT_TO_PROCESS, NULL, 0, |
75 | "Send signal to process (default)" }, |
76 | |
77 | { NULL, 0, NULL, 0, "Administrative options:" }, |
78 | { "progress" , 'p', NULL, 0, "Show signs of progress" }, |
79 | { "timing" , 'T', NULL, 0, |
80 | "Measure time from startup to the last thread finishing" }, |
81 | { NULL, 0, NULL, 0, NULL } |
82 | }; |
83 | |
84 | /* Prototype for option handler. */ |
85 | static error_t parse_opt (int key, char *arg, struct argp_state *state); |
86 | |
87 | /* Data structure to communicate with argp functions. */ |
88 | static struct argp argp = |
89 | { |
90 | test_options, parse_opt |
91 | }; |
92 | |
93 | |
94 | static int |
95 | do_test (void) |
96 | { |
97 | int argc = 2; |
98 | char *argv[3] = { (char *) "tst-argp1" , (char *) "--help" , NULL }; |
99 | int remaining; |
100 | |
101 | /* Parse and process arguments. */ |
102 | argp_parse (argp: &argp, argc: argc, argv: argv, flags: 0, arg_index: &remaining, NULL); |
103 | |
104 | return 0; |
105 | } |
106 | |
107 | |
108 | /* Handle program arguments. */ |
109 | static error_t |
110 | parse_opt (int key, char *arg, struct argp_state *state) |
111 | { |
112 | return ARGP_ERR_UNKNOWN; |
113 | } |
114 | |
115 | #define TEST_FUNCTION do_test () |
116 | #include "../test-skeleton.c" |
117 | |