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 #include <bin/lttng-sessiond/ust-app.h>
  33
  34 #include <tap/tap.h>
  35
  36 #include "utils.h"
  37
  38 /* This path will NEVER be created in this test */
  39 #define PATH1 "/tmp/.test-junk-lttng"
  40
  41 #define RANDOM_STRING_LEN       11
  42
  43 /* Number of TAP tests in this file */
  44 #define NUM_TESTS 10
  45
  46 /* For lttngerr.h */
  47 int lttng_opt_quiet = 1;
  48 int lttng_opt_verbose;
  49
  50 int ust_consumerd32_fd;
  51 int ust_consumerd64_fd;
  52
  53 static const char alphanum[] =
  54         "0123456789"
  55         "ABCDEFGHIJKLMNOPQRSTUVWXYZ"
  56         "abcdefghijklmnopqrstuvwxyz";
  57 static char random_string[RANDOM_STRING_LEN];
  58
  59 static struct ltt_ust_session *usess;
  60 static struct lttng_domain dom;
  61
  62 /*
  63  * Return random string of 10 characters.
  64  * Not thread-safe.
  65  */
  66 static char *get_random_string(void)
  67 {
  68         int i;
  69
  70         for (i = 0; i < RANDOM_STRING_LEN - 1; i++) {
  71                 random_string[i] = alphanum[rand() % (sizeof(alphanum) - 1)];
  72         }
  73
  74         random_string[RANDOM_STRING_LEN - 1] = '\0';
  75
  76         return random_string;
  77 }
  78
  79 static void test_create_one_ust_session(void)
  80 {
  81         dom.type = LTTNG_DOMAIN_UST;
  82
  83         usess = trace_ust_create_session(42);
  84         ok(usess != NULL, "Create UST session");
  85
  86         ok(usess->id == 42 &&
  87            usess->start_trace == 0 &&
  88            usess->domain_global.channels != NULL &&
  89            usess->uid == 0 &&
  90            usess->gid == 0,
  91            "Validate UST session");
  92
  93         trace_ust_destroy_session(usess);
  94 }
  95
  96 static void test_create_ust_metadata(void)
  97 {
  98         struct ltt_ust_metadata *metadata;
  99
 100         assert(usess != NULL);
 101
 102         metadata = trace_ust_create_metadata(PATH1);
 103         ok(metadata != NULL, "Create UST metadata");
 104
 105         ok(metadata->handle == -1 &&
 106            strlen(metadata->pathname) &&
 107            metadata->attr.overwrite
 108                         == DEFAULT_CHANNEL_OVERWRITE &&
 109            metadata->attr.subbuf_size
 110                         == default_get_metadata_subbuf_size() &&
 111            metadata->attr.num_subbuf
 112                         == DEFAULT_METADATA_SUBBUF_NUM &&
 113            metadata->attr.switch_timer_interval
 114                         == DEFAULT_UST_CHANNEL_SWITCH_TIMER &&
 115            metadata->attr.read_timer_interval
 116                         == DEFAULT_UST_CHANNEL_READ_TIMER &&
 117            metadata->attr.output == LTTNG_UST_MMAP,
 118            "Validate UST session metadata");
 119
 120         trace_ust_destroy_metadata(metadata);
 121 }
 122
 123 static void test_create_ust_channel(void)
 124 {
 125         struct ltt_ust_channel *uchan;
 126         struct lttng_channel attr;
 127
 128         memset(&attr, 0, sizeof(attr));
 129
 130         strncpy(attr.name, "channel0", 8);
 131
 132         uchan = trace_ust_create_channel(&attr);
 133         ok(uchan != NULL, "Create UST channel");
 134
 135         ok(uchan->enabled == 0 &&
 136            strncmp(uchan->name, "channel0", 8) == 0 &&
 137            uchan->name[LTTNG_UST_SYM_NAME_LEN - 1] == '\0' &&
 138            uchan->ctx != NULL &&
 139            uchan->events != NULL &&
 140            uchan->attr.overwrite  == attr.attr.overwrite,
 141            "Validate UST channel");
 142
 143         trace_ust_destroy_channel(uchan);
 144 }
 145
 146 static void test_create_ust_event(void)
 147 {
 148         struct ltt_ust_event *event;
 149         struct lttng_event ev;
 150
 151         memset(&ev, 0, sizeof(ev));
 152         strncpy(ev.name, get_random_string(), LTTNG_SYMBOL_NAME_LEN);
 153         ev.type = LTTNG_EVENT_TRACEPOINT;
 154         ev.loglevel_type = LTTNG_EVENT_LOGLEVEL_ALL;
 155
 156         event = trace_ust_create_event(&ev, NULL);
 157
 158         ok(event != NULL, "Create UST event");
 159
 160         ok(event->enabled == 0 &&
 161            event->attr.instrumentation == LTTNG_UST_TRACEPOINT &&
 162            strcmp(event->attr.name, ev.name) == 0 &&
 163            event->attr.name[LTTNG_UST_SYM_NAME_LEN - 1] == '\0',
 164            "Validate UST event");
 165
 166         trace_ust_destroy_event(event);
 167 }
 168
 169 static void test_create_ust_context(void)
 170 {
 171         struct lttng_event_context ectx;
 172         struct ltt_ust_context *uctx;
 173
 174         ectx.ctx = LTTNG_EVENT_CONTEXT_VTID;
 175
 176         uctx = trace_ust_create_context(&ectx);
 177         ok(uctx != NULL, "Create UST context");
 178
 179         ok((int) uctx->ctx.ctx == LTTNG_UST_CONTEXT_VTID,
 180            "Validate UST context");
 181 }
 182
 183 int main(int argc, char **argv)
 184 {
 185         plan_tests(NUM_TESTS);
 186
 187         diag("UST data structures unit test");
 188
 189         test_create_one_ust_session();
 190         test_create_ust_metadata();
 191         test_create_ust_channel();
 192         test_create_ust_event();
 193         test_create_ust_context();
 194
 195         return exit_status();
 196 }