Fix: build failure with -fno-common
[lttng-tools.git] / tests / unit / test_kernel_data.c
1 /*
2 * Copyright (c) 2011 David Goulet <david.goulet@polymtl.ca>
3 *
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * as published by the Free Software Foundation; only version 2
7 * of the License.
8 *
9 * This program 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
12 * GNU General Public License for more details.
13 *
14 * You should have received a copy of the GNU General Public License along
15 * with this program; if not, write to the Free Software Foundation, Inc.,
16 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
17 */
18
19 #include <assert.h>
20 #include <errno.h>
21 #include <stdio.h>
22 #include <stdlib.h>
23 #include <string.h>
24 #include <unistd.h>
25 #include <time.h>
26
27 #include <bin/lttng-sessiond/trace-kernel.h>
28 #include <common/defaults.h>
29
30 #include <tap/tap.h>
31
32 #define RANDOM_STRING_LEN 11
33
34 /* Number of TAP tests in this file */
35 #define NUM_TESTS 11
36
37 /* For error.h */
38 int lttng_opt_quiet = 1;
39 int lttng_opt_verbose;
40 int lttng_opt_mi;
41
42 static const char alphanum[] =
43 "0123456789"
44 "ABCDEFGHIJKLMNOPQRSTUVWXYZ"
45 "abcdefghijklmnopqrstuvwxyz";
46
47 static struct ltt_kernel_session *kern;
48 static char random_string[RANDOM_STRING_LEN];
49
50 /*
51 * Return random string of 10 characters.
52 * Not thread-safe.
53 */
54 static char *get_random_string(void)
55 {
56 int i;
57
58 for (i = 0; i < RANDOM_STRING_LEN - 1; i++) {
59 random_string[i] = alphanum[rand() % (sizeof(alphanum) - 1)];
60 }
61
62 random_string[RANDOM_STRING_LEN - 1] = '\0';
63
64 return random_string;
65 }
66
67 static void test_create_one_kernel_session(void)
68 {
69 kern = trace_kernel_create_session();
70 ok(kern != NULL, "Create kernel session");
71
72 if (!kern) {
73 skip(1, "Kernel session is null");
74 return;
75 }
76 ok(kern->fd == -1 &&
77 kern->metadata_stream_fd == -1 &&
78 kern->consumer_fds_sent == 0 &&
79 kern->channel_count == 0 &&
80 kern->stream_count_global == 0 &&
81 kern->metadata == NULL,
82 "Validate kernel session");
83 }
84
85 static void test_create_kernel_metadata(void)
86 {
87 assert(kern != NULL);
88
89 kern->metadata = trace_kernel_create_metadata();
90 ok(kern->metadata != NULL, "Create kernel metadata");
91
92 ok(kern->metadata->fd == -1 &&
93 kern->metadata->conf != NULL &&
94 kern->metadata->conf->attr.overwrite
95 == DEFAULT_CHANNEL_OVERWRITE &&
96 kern->metadata->conf->attr.subbuf_size
97 == default_get_metadata_subbuf_size() &&
98 kern->metadata->conf->attr.num_subbuf
99 == DEFAULT_METADATA_SUBBUF_NUM &&
100 kern->metadata->conf->attr.switch_timer_interval
101 == DEFAULT_KERNEL_CHANNEL_SWITCH_TIMER &&
102 kern->metadata->conf->attr.read_timer_interval
103 == DEFAULT_KERNEL_CHANNEL_READ_TIMER &&
104 kern->metadata->conf->attr.output
105 == DEFAULT_KERNEL_CHANNEL_OUTPUT,
106 "Validate kernel session metadata");
107
108 trace_kernel_destroy_metadata(kern->metadata);
109 }
110
111 static void test_create_kernel_channel(void)
112 {
113 struct ltt_kernel_channel *chan;
114 struct lttng_channel attr;
115 struct lttng_channel_extended extended;
116
117 memset(&attr, 0, sizeof(attr));
118 memset(&extended, 0, sizeof(extended));
119 attr.attr.extended.ptr = &extended;
120
121 chan = trace_kernel_create_channel(&attr);
122 ok(chan != NULL, "Create kernel channel");
123
124 if (!chan) {
125 skip(1, "Channel is null");
126 return;
127 }
128
129 ok(chan->fd == -1 &&
130 chan->enabled == 1 &&
131 chan->stream_count == 0 &&
132 chan->channel->attr.overwrite == attr.attr.overwrite,
133 "Validate kernel channel");
134
135 /* Init list in order to avoid sefaults from cds_list_del */
136 CDS_INIT_LIST_HEAD(&chan->list);
137 trace_kernel_destroy_channel(chan);
138 }
139
140 static void test_create_kernel_event(void)
141 {
142 enum lttng_error_code ret;
143 struct ltt_kernel_event *event;
144 struct lttng_event ev;
145
146 memset(&ev, 0, sizeof(ev));
147 ok(!lttng_strncpy(ev.name, get_random_string(),
148 LTTNG_KERNEL_SYM_NAME_LEN),
149 "Validate string length");
150 ev.type = LTTNG_EVENT_TRACEPOINT;
151 ev.loglevel_type = LTTNG_EVENT_LOGLEVEL_ALL;
152
153 ret = trace_kernel_create_event(&ev, NULL, NULL, &event);
154 ok(ret == LTTNG_OK, "Create kernel event");
155
156 if (!event) {
157 skip(1, "Event is null");
158 return;
159 }
160
161 ok(event->fd == -1 &&
162 event->enabled == 1 &&
163 event->event->instrumentation == LTTNG_KERNEL_TRACEPOINT &&
164 strlen(event->event->name),
165 "Validate kernel event");
166
167 /* Init list in order to avoid sefaults from cds_list_del */
168 CDS_INIT_LIST_HEAD(&event->list);
169 trace_kernel_destroy_event(event);
170 }
171
172 static void test_create_kernel_stream(void)
173 {
174 struct ltt_kernel_stream *stream;
175
176 stream = trace_kernel_create_stream("stream1", 0);
177 ok(stream != NULL, "Create kernel stream");
178
179 if (!stream) {
180 skip(1, "Stream is null");
181 return;
182 }
183
184 ok(stream->fd == -1 &&
185 stream->state == 0,
186 "Validate kernel stream");
187
188 /* Init list in order to avoid sefaults from cds_list_del */
189 CDS_INIT_LIST_HEAD(&stream->list);
190 trace_kernel_destroy_stream(stream);
191 }
192
193 int main(int argc, char **argv)
194 {
195 plan_tests(NUM_TESTS);
196
197 diag("Kernel data structure unit test");
198
199 test_create_one_kernel_session();
200 test_create_kernel_metadata();
201 test_create_kernel_channel();
202 test_create_kernel_event();
203 test_create_kernel_stream();
204
205 /* Success */
206 return 0;
207 }
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