2 * Copyright (c) 2011 David Goulet <david.goulet@polymtl.ca>
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
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.
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.
28 #include <bin/lttng-sessiond/trace-kernel.h>
29 #include <common/defaults.h>
33 /* This path will NEVER be created in this test */
34 #define PATH1 "/tmp/.test-junk-lttng"
36 #define RANDOM_STRING_LEN 11
39 int lttng_opt_quiet
= 1;
40 int lttng_opt_verbose
;
42 static const char alphanum
[] =
44 "ABCDEFGHIJKLMNOPQRSTUVWXYZ"
45 "abcdefghijklmnopqrstuvwxyz";
47 static struct ltt_kernel_session
*kern
;
48 static char random_string
[RANDOM_STRING_LEN
];
51 * Return random string of 10 characters.
54 static char *get_random_string(void)
58 for (i
= 0; i
< RANDOM_STRING_LEN
- 1; i
++) {
59 random_string
[i
] = alphanum
[rand() % (sizeof(alphanum
) - 1)];
62 random_string
[RANDOM_STRING_LEN
- 1] = '\0';
67 static void create_one_kernel_session(void)
69 printf("Create kernel session: ");
70 kern
= trace_kernel_create_session(PATH1
);
74 printf("Validating kernel session: ");
75 assert(kern
->fd
== -1);
76 assert(kern
->metadata_stream_fd
== -1);
77 assert(kern
->consumer_fds_sent
== 0);
78 assert(kern
->channel_count
== 0);
79 assert(kern
->stream_count_global
== 0);
80 assert(kern
->metadata
== NULL
);
81 assert(kern
->consumer_fd
== -1);
84 /* Init list in order to avoid sefaults from cds_list_del */
85 trace_kernel_destroy_session(kern
);
88 static void create_kernel_metadata(void)
92 printf("Create kernel metadata: ");
93 kern
->metadata
= trace_kernel_create_metadata(PATH1
);
94 assert(kern
->metadata
!= NULL
);
97 printf("Validating kernel session metadata: ");
98 assert(kern
->metadata
->fd
== -1);
99 assert(kern
->metadata
->conf
!= NULL
);
100 assert(kern
->metadata
->conf
->attr
.overwrite
101 == DEFAULT_CHANNEL_OVERWRITE
);
102 assert(kern
->metadata
->conf
->attr
.subbuf_size
103 == DEFAULT_METADATA_SUBBUF_SIZE
);
104 assert(kern
->metadata
->conf
->attr
.num_subbuf
105 == DEFAULT_METADATA_SUBBUF_NUM
);
106 assert(kern
->metadata
->conf
->attr
.switch_timer_interval
107 == DEFAULT_CHANNEL_SWITCH_TIMER
);
108 assert(kern
->metadata
->conf
->attr
.read_timer_interval
109 == DEFAULT_CHANNEL_READ_TIMER
);
110 assert(kern
->metadata
->conf
->attr
.output
111 == DEFAULT_KERNEL_CHANNEL_OUTPUT
);
114 trace_kernel_destroy_metadata(kern
->metadata
);
117 static void create_kernel_channel(void)
119 struct ltt_kernel_channel
*chan
;
120 struct lttng_channel attr
;
122 memset(&attr
, 0, sizeof(attr
));
124 printf("Creating kernel channel: ");
125 chan
= trace_kernel_create_channel(&attr
, PATH1
);
126 assert(chan
!= NULL
);
129 printf("Validating kernel channel: ");
130 assert(chan
->fd
== -1);
131 assert(chan
->enabled
== 1);
132 assert(chan
->stream_count
== 0);
133 assert(chan
->ctx
== NULL
);
134 assert(chan
->channel
->attr
.overwrite
== attr
.attr
.overwrite
);
137 /* Init list in order to avoid sefaults from cds_list_del */
138 CDS_INIT_LIST_HEAD(&chan
->list
);
139 trace_kernel_destroy_channel(chan
);
142 static void create_kernel_event(void)
144 struct ltt_kernel_event
*event
;
145 struct lttng_event ev
;
147 memset(&ev
, 0, sizeof(ev
));
148 strncpy(ev
.name
, get_random_string(), LTTNG_KERNEL_SYM_NAME_LEN
);
149 ev
.type
= LTTNG_EVENT_TRACEPOINT
;
150 ev
.loglevel_type
= LTTNG_EVENT_LOGLEVEL_ALL
;
152 printf("Creating kernel event: ");
153 event
= trace_kernel_create_event(&ev
);
154 assert(event
!= NULL
);
157 printf("Validating kernel event: ");
158 assert(event
->fd
== -1);
159 assert(event
->enabled
== 1);
160 assert(event
->ctx
== NULL
);
161 assert(event
->event
->instrumentation
== LTTNG_KERNEL_TRACEPOINT
);
162 assert(strlen(event
->event
->name
));
165 /* Init list in order to avoid sefaults from cds_list_del */
166 CDS_INIT_LIST_HEAD(&event
->list
);
167 trace_kernel_destroy_event(event
);
170 static void create_kernel_stream(void)
172 struct ltt_kernel_stream
*stream
;
174 printf("Creating kernel stream: ");
175 stream
= trace_kernel_create_stream("stream1", 0);
176 assert(stream
!= NULL
);
179 printf("Validating kernel stream: ");
180 assert(stream
->fd
== -1);
181 assert(stream
->state
== 0);
184 /* Init list in order to avoid sefaults from cds_list_del */
185 CDS_INIT_LIST_HEAD(&stream
->list
);
186 trace_kernel_destroy_stream(stream
);
189 int main(int argc
, char **argv
)
191 printf("\nTesting kernel data structures:\n-----------\n");
193 create_one_kernel_session();
195 create_kernel_metadata();
196 create_kernel_channel();
199 create_kernel_event();
201 create_kernel_stream();