16d4f7b3991de7d980e2689c3a14571e10a1ac63
[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 #define _GNU_SOURCE
20 #include <assert.h>
21 #include <errno.h>
22 #include <stdio.h>
23 #include <stdlib.h>
24 #include <string.h>
25 #include <unistd.h>
26 #include <time.h>
27
28 #include <bin/lttng-sessiond/trace-kernel.h>
29 #include <common/defaults.h>
30
31 #include <tap/tap.h>
32
33 #define RANDOM_STRING_LEN 11
34
35 /* Number of TAP tests in this file */
36 #define NUM_TESTS 10
37
38 /* For lttngerr.h */
39 int lttng_opt_quiet = 1;
40 int lttng_opt_verbose;
41
42 int ust_consumerd32_fd;
43 int ust_consumerd64_fd;
44
45 static const char alphanum[] =
46 "0123456789"
47 "ABCDEFGHIJKLMNOPQRSTUVWXYZ"
48 "abcdefghijklmnopqrstuvwxyz";
49
50 static struct ltt_kernel_session *kern;
51 static char random_string[RANDOM_STRING_LEN];
52
53 /*
54 * Return random string of 10 characters.
55 * Not thread-safe.
56 */
57 static char *get_random_string(void)
58 {
59 int i;
60
61 for (i = 0; i < RANDOM_STRING_LEN - 1; i++) {
62 random_string[i] = alphanum[rand() % (sizeof(alphanum) - 1)];
63 }
64
65 random_string[RANDOM_STRING_LEN - 1] = '\0';
66
67 return random_string;
68 }
69
70 static void test_create_one_kernel_session(void)
71 {
72 kern = trace_kernel_create_session();
73 ok(kern != NULL, "Create kernel session");
74
75 ok(kern->fd == -1 &&
76 kern->metadata_stream_fd == -1 &&
77 kern->consumer_fds_sent == 0 &&
78 kern->channel_count == 0 &&
79 kern->stream_count_global == 0 &&
80 kern->metadata == NULL,
81 "Validate kernel session");
82 }
83
84 static void test_create_kernel_metadata(void)
85 {
86 assert(kern != NULL);
87
88 kern->metadata = trace_kernel_create_metadata();
89 ok(kern->metadata != NULL, "Create kernel metadata");
90
91 ok(kern->metadata->fd == -1 &&
92 kern->metadata->conf != NULL &&
93 kern->metadata->conf->attr.overwrite
94 == DEFAULT_CHANNEL_OVERWRITE &&
95 kern->metadata->conf->attr.subbuf_size
96 == default_get_metadata_subbuf_size() &&
97 kern->metadata->conf->attr.num_subbuf
98 == DEFAULT_METADATA_SUBBUF_NUM &&
99 kern->metadata->conf->attr.switch_timer_interval
100 == DEFAULT_KERNEL_CHANNEL_SWITCH_TIMER &&
101 kern->metadata->conf->attr.read_timer_interval
102 == DEFAULT_KERNEL_CHANNEL_READ_TIMER &&
103 kern->metadata->conf->attr.output
104 == DEFAULT_KERNEL_CHANNEL_OUTPUT,
105 "Validate kernel session metadata");
106
107 trace_kernel_destroy_metadata(kern->metadata);
108 }
109
110 static void test_create_kernel_channel(void)
111 {
112 struct ltt_kernel_channel *chan;
113 struct lttng_channel attr;
114
115 memset(&attr, 0, sizeof(attr));
116
117 chan = trace_kernel_create_channel(&attr);
118 ok(chan != NULL, "Create kernel channel");
119
120 ok(chan->fd == -1 &&
121 chan->enabled == 1 &&
122 chan->stream_count == 0 &&
123 chan->ctx == NULL &&
124 chan->channel->attr.overwrite == attr.attr.overwrite,
125 "Validate kernel channel");
126
127 /* Init list in order to avoid sefaults from cds_list_del */
128 CDS_INIT_LIST_HEAD(&chan->list);
129 trace_kernel_destroy_channel(chan);
130 }
131
132 static void test_create_kernel_event(void)
133 {
134 struct ltt_kernel_event *event;
135 struct lttng_event ev;
136
137 memset(&ev, 0, sizeof(ev));
138 strncpy(ev.name, get_random_string(), LTTNG_KERNEL_SYM_NAME_LEN);
139 ev.type = LTTNG_EVENT_TRACEPOINT;
140 ev.loglevel_type = LTTNG_EVENT_LOGLEVEL_ALL;
141
142 event = trace_kernel_create_event(&ev);
143 ok(event != NULL, "Create kernel event");
144
145 ok(event->fd == -1 &&
146 event->enabled == 1 &&
147 event->event->instrumentation == LTTNG_KERNEL_TRACEPOINT &&
148 strlen(event->event->name),
149 "Validate kernel event");
150
151 /* Init list in order to avoid sefaults from cds_list_del */
152 CDS_INIT_LIST_HEAD(&event->list);
153 trace_kernel_destroy_event(event);
154 }
155
156 static void test_create_kernel_stream(void)
157 {
158 struct ltt_kernel_stream *stream;
159
160 stream = trace_kernel_create_stream("stream1", 0);
161 ok(stream != NULL, "Create kernel stream");
162
163 ok(stream->fd == -1 &&
164 stream->state == 0,
165 "Validate kernel stream");
166
167 /* Init list in order to avoid sefaults from cds_list_del */
168 CDS_INIT_LIST_HEAD(&stream->list);
169 trace_kernel_destroy_stream(stream);
170 }
171
172 int main(int argc, char **argv)
173 {
174 plan_tests(NUM_TESTS);
175
176 diag("Kernel data structure unit test");
177
178 test_create_one_kernel_session();
179 test_create_kernel_metadata();
180 test_create_kernel_channel();
181 test_create_kernel_event();
182 test_create_kernel_stream();
183
184 /* Success */
185 return 0;
186 }
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