Commit | Line | Data |
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7e0cc23b CB |
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 |
e8526e3f | 19 | #include <getopt.h> |
209b934f | 20 | #include <assert.h> |
7e0cc23b | 21 | #include <arpa/inet.h> |
209b934f | 22 | #include <fcntl.h> |
7e0cc23b CB |
23 | #include <stdarg.h> |
24 | #include <stdio.h> | |
25 | #include <stdlib.h> | |
26 | #include <string.h> | |
27 | #include <sys/mman.h> | |
28 | #include <sys/stat.h> | |
29 | #include <sys/types.h> | |
30 | #include <unistd.h> | |
0fc2834c | 31 | #include <stdbool.h> |
5fcaccbc MD |
32 | #include <signal.h> |
33 | #include <poll.h> | |
34 | #include <errno.h> | |
ae941114 | 35 | #include "utils.h" |
95170e51 | 36 | #include "signal-helper.h" |
7e0cc23b CB |
37 | |
38 | #define TRACEPOINT_DEFINE | |
39 | #include "tp.h" | |
40 | ||
e8526e3f JR |
41 | static |
42 | int create_file(const char *path) | |
209b934f DG |
43 | { |
44 | int ret; | |
45 | ||
e8526e3f JR |
46 | if (!path) { |
47 | return -1; | |
5fcaccbc | 48 | } |
209b934f DG |
49 | |
50 | ret = creat(path, S_IRWXU); | |
51 | if (ret < 0) { | |
e8526e3f JR |
52 | perror("creat"); |
53 | return -1; | |
54 | } | |
55 | ||
56 | ret = close(ret); | |
57 | if (ret < 0) { | |
58 | perror("close"); | |
59 | return -1; | |
209b934f DG |
60 | } |
61 | ||
e8526e3f | 62 | return 0; |
5fcaccbc MD |
63 | } |
64 | ||
65 | static | |
e8526e3f | 66 | int wait_on_file(const char *path) |
5fcaccbc | 67 | { |
e8526e3f JR |
68 | int ret; |
69 | struct stat buf; | |
70 | ||
5fcaccbc | 71 | if (!path) { |
e8526e3f | 72 | return -1; |
5fcaccbc | 73 | } |
5fcaccbc | 74 | |
e8526e3f | 75 | for (;;) { |
5fcaccbc MD |
76 | ret = stat(path, &buf); |
77 | if (ret == -1 && errno == ENOENT) { | |
e8526e3f JR |
78 | ret = poll(NULL, 0, 10); /* 10 ms delay */ |
79 | /* Should return 0 everytime */ | |
80 | if (ret) { | |
81 | if (ret < 0) { | |
82 | perror("perror"); | |
83 | } else { | |
84 | fprintf(stderr, | |
85 | "poll return value is larger than zero\n"); | |
86 | } | |
87 | return -1; | |
88 | } | |
5fcaccbc MD |
89 | continue; /* retry */ |
90 | } | |
91 | if (ret) { | |
92 | perror("stat"); | |
e8526e3f | 93 | return -1; |
5fcaccbc MD |
94 | } |
95 | break; /* found */ | |
96 | } | |
e8526e3f JR |
97 | |
98 | return 0; | |
209b934f DG |
99 | } |
100 | ||
e8526e3f JR |
101 | static struct option long_options[] = |
102 | { | |
103 | /* These options set a flag. */ | |
104 | {"iter", required_argument, 0, 'i'}, | |
105 | {"wait", required_argument, 0, 'w'}, | |
106 | {"sync-after-first-event", required_argument, 0, 'a'}, | |
107 | {"sync-before-last-event", required_argument, 0, 'b'}, | |
108 | {0, 0, 0, 0} | |
109 | }; | |
110 | ||
7e0cc23b CB |
111 | int main(int argc, char **argv) |
112 | { | |
0fc2834c | 113 | unsigned int i, netint; |
e8526e3f JR |
114 | int option_index; |
115 | char option_char; | |
7e0cc23b CB |
116 | long values[] = { 1, 2, 3 }; |
117 | char text[10] = "test"; | |
118 | double dbl = 2.0; | |
119 | float flt = 2222.0; | |
e8526e3f | 120 | int nr_iter = 100, ret = 0, first_event_file_created = 0; |
7e0cc23b | 121 | useconds_t nr_usec = 0; |
5fcaccbc MD |
122 | char *after_first_event_file_path = NULL; |
123 | char *before_last_event_file_path = NULL; | |
7e0cc23b | 124 | |
e8526e3f JR |
125 | while((option_char = getopt_long(argc, argv, "i:w:a:b:c:d:", long_options, &option_index)) != -1) { |
126 | switch (option_char) { | |
127 | case 'a': | |
128 | after_first_event_file_path = strdup(optarg); | |
129 | break; | |
130 | case 'b': | |
131 | before_last_event_file_path = strdup(optarg); | |
132 | break; | |
133 | case 'i': | |
134 | nr_iter = atoi(optarg); | |
135 | break; | |
136 | case 'w': | |
137 | nr_usec = atoi(optarg); | |
138 | break; | |
139 | case '?': | |
140 | /* getopt_long already printed an error message. */ | |
141 | break; | |
142 | default: | |
143 | ret = -1; | |
144 | goto end; | |
145 | } | |
7e0cc23b CB |
146 | } |
147 | ||
e8526e3f JR |
148 | if (optind != argc) { |
149 | fprintf(stderr, "Error: takes long options only."); | |
150 | ret = -1; | |
151 | goto end; | |
7e0cc23b CB |
152 | } |
153 | ||
5fcaccbc | 154 | |
e8526e3f JR |
155 | if (set_signal_handler()) { |
156 | ret = -1; | |
157 | goto end; | |
209b934f DG |
158 | } |
159 | ||
0fc2834c | 160 | for (i = 0; nr_iter < 0 || i < nr_iter; i++) { |
5fcaccbc MD |
161 | if (nr_iter >= 0 && i == nr_iter - 1) { |
162 | /* | |
163 | * Wait on synchronization before writing last | |
164 | * event. | |
165 | */ | |
e8526e3f JR |
166 | if (before_last_event_file_path) { |
167 | ret = wait_on_file(before_last_event_file_path); | |
168 | if (ret != 0) { | |
169 | goto end; | |
170 | } | |
171 | } | |
5fcaccbc | 172 | } |
7e0cc23b | 173 | netint = htonl(i); |
5fcaccbc MD |
174 | tracepoint(tp, tptest, i, netint, values, text, |
175 | strlen(text), dbl, flt); | |
209b934f DG |
176 | |
177 | /* | |
5fcaccbc MD |
178 | * First loop we create the file if asked to indicate |
179 | * that at least one tracepoint has been hit. | |
209b934f | 180 | */ |
e8526e3f JR |
181 | if (after_first_event_file_path && first_event_file_created == 0) { |
182 | ret = create_file(after_first_event_file_path); | |
183 | ||
184 | if (ret != 0) { | |
185 | goto end; | |
186 | } else { | |
187 | first_event_file_created = 1; | |
188 | } | |
189 | } | |
190 | ||
b734f5f7 | 191 | if (nr_usec) { |
ae941114 JG |
192 | if (usleep_safe(nr_usec)) { |
193 | ret = -1; | |
194 | goto end; | |
195 | } | |
b734f5f7 | 196 | } |
95170e51 JG |
197 | if (should_quit) { |
198 | break; | |
199 | } | |
7e0cc23b CB |
200 | } |
201 | ||
ae941114 | 202 | end: |
e8526e3f JR |
203 | free(after_first_event_file_path); |
204 | free(before_last_event_file_path); | |
ae941114 | 205 | exit(!ret ? EXIT_SUCCESS : EXIT_FAILURE); |
7e0cc23b | 206 | } |