tests/unit/test_ust_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 <lttng/lttng.h>
  29 #include <bin/lttng-sessiond/lttng-ust-abi.h>
  30 #include <common/defaults.h>
  31 #include <bin/lttng-sessiond/trace-ust.h>
  32
  33 #include <tap/tap.h>
  34
  35 #include "utils.h"
  36
  37 /* This path will NEVER be created in this test */
  38 #define PATH1 "/tmp/.test-junk-lttng"
  39
  40 #define RANDOM_STRING_LEN       11
  41
  42 /* Number of TAP tests in this file */
  43 #define NUM_TESTS 10
  44
  45 /* For lttngerr.h */
  46 int lttng_opt_quiet = 1;
  47 int lttng_opt_verbose;
  48
  49 static const char alphanum[] =
  50         "0123456789"
  51         "ABCDEFGHIJKLMNOPQRSTUVWXYZ"
  52         "abcdefghijklmnopqrstuvwxyz";
  53 static char random_string[RANDOM_STRING_LEN];
  54
  55 static struct ltt_ust_session *usess;
  56 static struct lttng_domain dom;
  57
  58 /*
  59  * Return random string of 10 characters.
  60  * Not thread-safe.
  61  */
  62 static char *get_random_string(void)
  63 {
  64         int i;
  65
  66         for (i = 0; i < RANDOM_STRING_LEN - 1; i++) {
  67                 random_string[i] = alphanum[rand() % (sizeof(alphanum) - 1)];
  68         }
  69
  70         random_string[RANDOM_STRING_LEN - 1] = '\0';
  71
  72         return random_string;
  73 }
  74
  75 static void test_create_one_ust_session(void)
  76 {
  77         dom.type = LTTNG_DOMAIN_UST;
  78
  79         usess = trace_ust_create_session(PATH1, 42);
  80         ok(usess != NULL, "Create UST session");
  81
  82         ok(usess->id == 42 &&
  83            usess->start_trace == 0 &&
  84            usess->domain_global.channels != NULL &&
  85            usess->domain_pid != NULL &&
  86            usess->domain_exec != NULL &&
  87            usess->uid == 0 &&
  88            usess->gid == 0,
  89            "Validate UST session");
  90
  91         trace_ust_destroy_session(usess);
  92 }
  93
  94 static void test_create_ust_metadata(void)
  95 {
  96         struct ltt_ust_metadata *metadata;
  97
  98         assert(usess != NULL);
  99
 100         metadata = trace_ust_create_metadata(PATH1);
 101         ok(metadata != NULL, "Create UST metadata");
 102
 103         ok(metadata->handle == -1 &&
 104            strlen(metadata->pathname) &&
 105            metadata->attr.overwrite
 106                         == DEFAULT_CHANNEL_OVERWRITE &&
 107            metadata->attr.subbuf_size
 108                         == default_get_metadata_subbuf_size() &&
 109            metadata->attr.num_subbuf
 110                         == DEFAULT_METADATA_SUBBUF_NUM &&
 111            metadata->attr.switch_timer_interval
 112                         == DEFAULT_CHANNEL_SWITCH_TIMER &&
 113            metadata->attr.read_timer_interval
 114                         == DEFAULT_CHANNEL_READ_TIMER &&
 115            metadata->attr.output == LTTNG_UST_MMAP,
 116            "Validate UST session metadata");
 117
 118         trace_ust_destroy_metadata(metadata);
 119 }
 120
 121 static void test_create_ust_channel(void)
 122 {
 123         struct ltt_ust_channel *uchan;
 124         struct lttng_channel attr;
 125
 126         memset(&attr, 0, sizeof(attr));
 127
 128         strncpy(attr.name, "channel0", 8);
 129
 130         uchan = trace_ust_create_channel(&attr, PATH1);
 131         ok(uchan != NULL, "Create UST channel");
 132
 133         ok(uchan->enabled == 0 &&
 134            strcmp(PATH1, uchan->pathname) == 0 &&
 135            strncmp(uchan->name, "channel0", 8) == 0 &&
 136            uchan->name[LTTNG_UST_SYM_NAME_LEN - 1] == '\0' &&
 137            uchan->ctx != NULL &&
 138            uchan->events != NULL &&
 139            uchan->attr.overwrite  == attr.attr.overwrite,
 140            "Validate UST channel");
 141
 142         trace_ust_destroy_channel(uchan);
 143 }
 144
 145 static void test_create_ust_event(void)
 146 {
 147         struct ltt_ust_event *event;
 148         struct lttng_event ev;
 149
 150         memset(&ev, 0, sizeof(ev));
 151         strncpy(ev.name, get_random_string(), LTTNG_SYMBOL_NAME_LEN);
 152         ev.type = LTTNG_EVENT_TRACEPOINT;
 153         ev.loglevel_type = LTTNG_EVENT_LOGLEVEL_ALL;
 154
 155         event = trace_ust_create_event(&ev, NULL);
 156
 157         ok(event != NULL, "Create UST event");
 158
 159         ok(event->enabled == 0 &&
 160            event->attr.instrumentation == LTTNG_UST_TRACEPOINT &&
 161            strcmp(event->attr.name, ev.name) == 0 &&
 162            event->attr.name[LTTNG_UST_SYM_NAME_LEN - 1] == '\0',
 163            "Validate UST event");
 164
 165         trace_ust_destroy_event(event);
 166 }
 167
 168 static void test_create_ust_context(void)
 169 {
 170         struct lttng_event_context ectx;
 171         struct ltt_ust_context *uctx;
 172
 173         ectx.ctx = LTTNG_EVENT_CONTEXT_VTID;
 174
 175         uctx = trace_ust_create_context(&ectx);
 176         ok(uctx != NULL, "Create UST context");
 177
 178         ok((int) uctx->ctx.ctx == LTTNG_UST_CONTEXT_VTID,
 179            "Validate UST context");
 180 }
 181
 182 int main(int argc, char **argv)
 183 {
 184         diag("UST data structures unit test");
 185
 186         plan_tests(NUM_TESTS);
 187
 188         test_create_one_ust_session();
 189         test_create_ust_metadata();
 190         test_create_ust_channel();
 191         test_create_ust_event();
 192         test_create_ust_context();
 193
 194         return exit_status();
 195 }