Fix: remove unused event types in MI XML schema
[lttng-tools.git] / tests / utils / testapp / gen-ust-events / gen-ust-events.c
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1/*
2 * Copyright (C) - 2012 David Goulet <dgoulet@efficios.com>
3 *
4 * This library is free software; you can redistribute it and/or modify it
5 * under the terms of the GNU Lesser General Public License as published by the
6 * Free Software Foundation; version 2.1 of the License.
7 *
8 * This library is distributed in the hope that it will be useful, but WITHOUT
9 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
10 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License
11 * for more details.
12 *
13 * You should have received a copy of the GNU Lesser General Public License
14 * along with this library; if not, write to the Free Software Foundation,
15 * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
16 */
17
70dac0d7 18#define _LGPL_SOURCE
209b934f 19#include <assert.h>
7e0cc23b 20#include <arpa/inet.h>
209b934f 21#include <fcntl.h>
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22#include <stdarg.h>
23#include <stdio.h>
24#include <stdlib.h>
25#include <string.h>
26#include <sys/mman.h>
27#include <sys/stat.h>
28#include <sys/types.h>
29#include <unistd.h>
0fc2834c 30#include <stdbool.h>
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31#include <signal.h>
32#include <poll.h>
33#include <errno.h>
ae941114 34#include "utils.h"
95983a02 35#include "signal-helper.h"
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36
37#define TRACEPOINT_DEFINE
38#include "tp.h"
39
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40void create_file(const char *path)
41{
5fcaccbc 42 static bool file_created = false;
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43 int ret;
44
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45 if (!path || file_created) {
46 return;
47 }
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48
49 ret = creat(path, S_IRWXU);
50 if (ret < 0) {
51 fprintf(stderr, "Failed to create file %s\n", path);
52 return;
53 }
54
55 (void) close(ret);
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56 file_created = true;
57}
58
59static
60void wait_on_file(const char *path)
61{
62 if (!path) {
63 return;
64 }
65 for (;;) {
66 int ret;
67 struct stat buf;
68
69 ret = stat(path, &buf);
70 if (ret == -1 && errno == ENOENT) {
71 (void) poll(NULL, 0, 10); /* 10 ms delay */
72 continue; /* retry */
73 }
74 if (ret) {
75 perror("stat");
76 exit(EXIT_FAILURE);
77 }
78 break; /* found */
79 }
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80}
81
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82int main(int argc, char **argv)
83{
0fc2834c 84 unsigned int i, netint;
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85 long values[] = { 1, 2, 3 };
86 char text[10] = "test";
87 double dbl = 2.0;
88 float flt = 2222.0;
ae941114 89 int nr_iter = 100, ret = 0;
7e0cc23b 90 useconds_t nr_usec = 0;
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91 char *after_first_event_file_path = NULL;
92 char *before_last_event_file_path = NULL;
7e0cc23b 93
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94 if (set_signal_handler()) {
95 ret = -1;
96 goto end;
97 }
98
7e0cc23b 99 if (argc >= 2) {
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100 /*
101 * If nr_iter is negative, do an infinite tracing loop.
102 */
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103 nr_iter = atoi(argv[1]);
104 }
105
2c34b645 106 if (argc >= 3) {
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107 /* By default, don't wait unless user specifies. */
108 nr_usec = atoi(argv[2]);
109 }
110
2c34b645 111 if (argc >= 4) {
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112 after_first_event_file_path = argv[3];
113 }
114
115 if (argc >= 5) {
116 before_last_event_file_path = argv[4];
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117 }
118
0fc2834c 119 for (i = 0; nr_iter < 0 || i < nr_iter; i++) {
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120 if (nr_iter >= 0 && i == nr_iter - 1) {
121 /*
122 * Wait on synchronization before writing last
123 * event.
124 */
125 wait_on_file(before_last_event_file_path);
126 }
7e0cc23b 127 netint = htonl(i);
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128 tracepoint(tp, tptest, i, netint, values, text,
129 strlen(text), dbl, flt);
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130
131 /*
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132 * First loop we create the file if asked to indicate
133 * that at least one tracepoint has been hit.
209b934f 134 */
5fcaccbc 135 create_file(after_first_event_file_path);
b734f5f7 136 if (nr_usec) {
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137 if (usleep_safe(nr_usec)) {
138 ret = -1;
139 goto end;
140 }
b734f5f7 141 }
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142 if (should_quit) {
143 break;
144 }
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145 }
146
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147end:
148 exit(!ret ? EXIT_SUCCESS : EXIT_FAILURE);
7e0cc23b 149}
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