Tests: add placeholder symbol to allow unit tests to link
[lttng-tools.git] / tests / unit / test_kernel_data.c
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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
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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
10a8a223 27#include <bin/lttng-sessiond/trace-kernel.h>
990570ed 28#include <common/defaults.h>
10a8a223 29
23aaa19e 30#include <tap/tap.h>
897b8e23 31
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32#define RANDOM_STRING_LEN 11
33
23aaa19e 34/* Number of TAP tests in this file */
1c0733db 35#define NUM_TESTS 11
23aaa19e 36
ad7c9c18 37/* For error.h */
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38int lttng_opt_quiet = 1;
39int lttng_opt_verbose;
c7e35b03 40int lttng_opt_mi;
83b45089 41struct notification_thread_handle *notification_thread_handle;
897b8e23 42
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43int ust_consumerd32_fd;
44int ust_consumerd64_fd;
45
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46static const char alphanum[] =
47 "0123456789"
48 "ABCDEFGHIJKLMNOPQRSTUVWXYZ"
49 "abcdefghijklmnopqrstuvwxyz";
50
51static struct ltt_kernel_session *kern;
98612240 52static char random_string[RANDOM_STRING_LEN];
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53
54/*
55 * Return random string of 10 characters.
98612240 56 * Not thread-safe.
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57 */
58static char *get_random_string(void)
59{
60 int i;
897b8e23 61
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62 for (i = 0; i < RANDOM_STRING_LEN - 1; i++) {
63 random_string[i] = alphanum[rand() % (sizeof(alphanum) - 1)];
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64 }
65
98612240 66 random_string[RANDOM_STRING_LEN - 1] = '\0';
897b8e23 67
98612240 68 return random_string;
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69}
70
23aaa19e 71static void test_create_one_kernel_session(void)
897b8e23 72{
dec56f6c 73 kern = trace_kernel_create_session();
23aaa19e 74 ok(kern != NULL, "Create kernel session");
897b8e23 75
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76 if (!kern) {
77 skip(1, "Kernel session is null");
78 return;
79 }
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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");
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87}
88
23aaa19e 89static void test_create_kernel_metadata(void)
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90{
91 assert(kern != NULL);
92
a4b92340 93 kern->metadata = trace_kernel_create_metadata();
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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
5d2e1e66 105 == DEFAULT_KERNEL_CHANNEL_SWITCH_TIMER &&
23aaa19e 106 kern->metadata->conf->attr.read_timer_interval
5d2e1e66 107 == DEFAULT_KERNEL_CHANNEL_READ_TIMER &&
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108 kern->metadata->conf->attr.output
109 == DEFAULT_KERNEL_CHANNEL_OUTPUT,
110 "Validate kernel session metadata");
897b8e23 111
3f43a221 112 trace_kernel_destroy_metadata(kern->metadata);
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113}
114
23aaa19e 115static void test_create_kernel_channel(void)
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116{
117 struct ltt_kernel_channel *chan;
118 struct lttng_channel attr;
119
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120 memset(&attr, 0, sizeof(attr));
121
fdd9eb17 122 chan = trace_kernel_create_channel(&attr);
23aaa19e 123 ok(chan != NULL, "Create kernel channel");
897b8e23 124
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125 if (!chan) {
126 skip(1, "Channel is null");
127 return;
128 }
129
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130 ok(chan->fd == -1 &&
131 chan->enabled == 1 &&
132 chan->stream_count == 0 &&
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133 chan->channel->attr.overwrite == attr.attr.overwrite,
134 "Validate kernel channel");
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135
136 /* Init list in order to avoid sefaults from cds_list_del */
137 CDS_INIT_LIST_HEAD(&chan->list);
3f43a221 138 trace_kernel_destroy_channel(chan);
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139}
140
23aaa19e 141static void test_create_kernel_event(void)
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142{
143 struct ltt_kernel_event *event;
144 struct lttng_event ev;
145
441c16a7 146 memset(&ev, 0, sizeof(ev));
72265d8a 147 ok(!lttng_strncpy(ev.name, get_random_string(),
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148 LTTNG_KERNEL_SYM_NAME_LEN),
149 "Validate string length");
897b8e23 150 ev.type = LTTNG_EVENT_TRACEPOINT;
441c16a7 151 ev.loglevel_type = LTTNG_EVENT_LOGLEVEL_ALL;
897b8e23 152
00a62084 153 event = trace_kernel_create_event(&ev, NULL, NULL);
23aaa19e 154 ok(event != NULL, "Create kernel event");
897b8e23 155
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156 if (!event) {
157 skip(1, "Event is null");
158 return;
159 }
160
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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");
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166
167 /* Init list in order to avoid sefaults from cds_list_del */
168 CDS_INIT_LIST_HEAD(&event->list);
3f43a221 169 trace_kernel_destroy_event(event);
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170}
171
23aaa19e 172static void test_create_kernel_stream(void)
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173{
174 struct ltt_kernel_stream *stream;
175
00e2e675 176 stream = trace_kernel_create_stream("stream1", 0);
23aaa19e 177 ok(stream != NULL, "Create kernel stream");
897b8e23 178
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179 if (!stream) {
180 skip(1, "Stream is null");
181 return;
182 }
183
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184 ok(stream->fd == -1 &&
185 stream->state == 0,
186 "Validate kernel stream");
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187
188 /* Init list in order to avoid sefaults from cds_list_del */
189 CDS_INIT_LIST_HEAD(&stream->list);
3f43a221 190 trace_kernel_destroy_stream(stream);
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191}
192
193int main(int argc, char **argv)
194{
23aaa19e 195 plan_tests(NUM_TESTS);
897b8e23 196
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197 diag("Kernel data structure unit test");
198
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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();
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204
205 /* Success */
206 return 0;
207}
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