Add Unit test to poll compatibility layer
[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 struct notification_thread_handle *notification_thread_handle;
42
43 int ust_consumerd32_fd;
44 int ust_consumerd64_fd;
45
46 static const char alphanum[] =
47 "0123456789"
48 "ABCDEFGHIJKLMNOPQRSTUVWXYZ"
49 "abcdefghijklmnopqrstuvwxyz";
50
51 static struct ltt_kernel_session *kern;
52 static char random_string[RANDOM_STRING_LEN];
53
54 /*
55 * Return random string of 10 characters.
56 * Not thread-safe.
57 */
58 static char *get_random_string(void)
59 {
60 int i;
61
62 for (i = 0; i < RANDOM_STRING_LEN - 1; i++) {
63 random_string[i] = alphanum[rand() % (sizeof(alphanum) - 1)];
64 }
65
66 random_string[RANDOM_STRING_LEN - 1] = '\0';
67
68 return random_string;
69 }
70
71 static void test_create_one_kernel_session(void)
72 {
73 kern = trace_kernel_create_session();
74 ok(kern != NULL, "Create kernel session");
75
76 if (!kern) {
77 skip(1, "Kernel session is null");
78 return;
79 }
80 ok(kern->fd == -1 &&
81 kern->metadata_stream_fd == -1 &&
82 kern->consumer_fds_sent == 0 &&
83 kern->channel_count == 0 &&
84 kern->stream_count_global == 0 &&
85 kern->metadata == NULL,
86 "Validate kernel session");
87 }
88
89 static void test_create_kernel_metadata(void)
90 {
91 assert(kern != NULL);
92
93 kern->metadata = trace_kernel_create_metadata();
94 ok(kern->metadata != NULL, "Create kernel metadata");
95
96 ok(kern->metadata->fd == -1 &&
97 kern->metadata->conf != NULL &&
98 kern->metadata->conf->attr.overwrite
99 == DEFAULT_CHANNEL_OVERWRITE &&
100 kern->metadata->conf->attr.subbuf_size
101 == default_get_metadata_subbuf_size() &&
102 kern->metadata->conf->attr.num_subbuf
103 == DEFAULT_METADATA_SUBBUF_NUM &&
104 kern->metadata->conf->attr.switch_timer_interval
105 == DEFAULT_KERNEL_CHANNEL_SWITCH_TIMER &&
106 kern->metadata->conf->attr.read_timer_interval
107 == DEFAULT_KERNEL_CHANNEL_READ_TIMER &&
108 kern->metadata->conf->attr.output
109 == DEFAULT_KERNEL_CHANNEL_OUTPUT,
110 "Validate kernel session metadata");
111
112 trace_kernel_destroy_metadata(kern->metadata);
113 }
114
115 static void test_create_kernel_channel(void)
116 {
117 struct ltt_kernel_channel *chan;
118 struct lttng_channel attr;
119 struct lttng_channel_extended extended;
120
121 memset(&attr, 0, sizeof(attr));
122 memset(&extended, 0, sizeof(extended));
123 attr.attr.extended.ptr = &extended;
124
125 chan = trace_kernel_create_channel(&attr);
126 ok(chan != NULL, "Create kernel channel");
127
128 if (!chan) {
129 skip(1, "Channel is null");
130 return;
131 }
132
133 ok(chan->fd == -1 &&
134 chan->enabled == 1 &&
135 chan->stream_count == 0 &&
136 chan->channel->attr.overwrite == attr.attr.overwrite,
137 "Validate kernel channel");
138
139 /* Init list in order to avoid sefaults from cds_list_del */
140 CDS_INIT_LIST_HEAD(&chan->list);
141 trace_kernel_destroy_channel(chan);
142 }
143
144 static void test_create_kernel_event(void)
145 {
146 enum lttng_error_code ret;
147 struct ltt_kernel_event *event;
148 struct lttng_event ev;
149
150 memset(&ev, 0, sizeof(ev));
151 ok(!lttng_strncpy(ev.name, get_random_string(),
152 LTTNG_KERNEL_SYM_NAME_LEN),
153 "Validate string length");
154 ev.type = LTTNG_EVENT_TRACEPOINT;
155 ev.loglevel_type = LTTNG_EVENT_LOGLEVEL_ALL;
156
157 ret = trace_kernel_create_event(&ev, NULL, NULL, &event);
158 ok(ret == LTTNG_OK, "Create kernel event");
159
160 if (!event) {
161 skip(1, "Event is null");
162 return;
163 }
164
165 ok(event->fd == -1 &&
166 event->enabled == 1 &&
167 event->event->instrumentation == LTTNG_KERNEL_TRACEPOINT &&
168 strlen(event->event->name),
169 "Validate kernel event");
170
171 /* Init list in order to avoid sefaults from cds_list_del */
172 CDS_INIT_LIST_HEAD(&event->list);
173 trace_kernel_destroy_event(event);
174 }
175
176 static void test_create_kernel_stream(void)
177 {
178 struct ltt_kernel_stream *stream;
179
180 stream = trace_kernel_create_stream("stream1", 0);
181 ok(stream != NULL, "Create kernel stream");
182
183 if (!stream) {
184 skip(1, "Stream is null");
185 return;
186 }
187
188 ok(stream->fd == -1 &&
189 stream->state == 0,
190 "Validate kernel stream");
191
192 /* Init list in order to avoid sefaults from cds_list_del */
193 CDS_INIT_LIST_HEAD(&stream->list);
194 trace_kernel_destroy_stream(stream);
195 }
196
197 int main(int argc, char **argv)
198 {
199 plan_tests(NUM_TESTS);
200
201 diag("Kernel data structure unit test");
202
203 test_create_one_kernel_session();
204 test_create_kernel_metadata();
205 test_create_kernel_channel();
206 test_create_kernel_event();
207 test_create_kernel_stream();
208
209 /* Success */
210 return 0;
211 }
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