tests/lttng/ust_global_event_basic.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
  30 #include "../utils.h"
  31
  32 int main(int argc, char **argv)
  33 {
  34     struct lttng_handle *handle = NULL;
  35     struct lttng_domain dom;
  36         struct lttng_channel channel;
  37         struct lttng_event ev1, ev2, ev3;
  38
  39     int ret = 0;
  40
  41         char *session_name = "ust_global_event_basic";
  42
  43     dom.type = LTTNG_DOMAIN_UST;
  44
  45         strcpy(channel.name, "mychan");
  46         channel.attr.overwrite = 0;
  47         channel.attr.subbuf_size = 4096;
  48         channel.attr.num_subbuf = 4;
  49         channel.attr.switch_timer_interval = 0;
  50         channel.attr.read_timer_interval = 200;
  51         channel.attr.output = LTTNG_EVENT_MMAP;
  52
  53         strcpy(ev1.name, "tp1");
  54         ev1.type = LTTNG_EVENT_TRACEPOINT;
  55
  56         strcpy(ev2.name, "ev2");
  57         ev2.type = LTTNG_EVENT_TRACEPOINT;
  58
  59         strcpy(ev3.name, "ev3");
  60         ev3.type = LTTNG_EVENT_TRACEPOINT;
  61
  62         printf("\nTesting tracing UST events:\n");
  63         printf("-----------\n");
  64
  65         if (argc < 2) {
  66                 printf("Missing session trace path\n");
  67                 return 1;
  68         }
  69
  70         printf("Creating tracing session (%s): ", argv[1]);
  71     if ((ret = lttng_create_session(session_name, argv[1])) < 0) {
  72         printf("error creating the session : %s\n", lttng_strerror(ret));
  73                 goto create_fail;
  74     }
  75         PRINT_OK();
  76
  77         printf("Creating session handle: ");
  78         if ((handle = lttng_create_handle(session_name, &dom)) == NULL) {
  79                 printf("error creating handle: %s\n", lttng_strerror(ret));
  80                 goto handle_fail;
  81         }
  82         PRINT_OK();
  83
  84         printf("Enabling %s UST channel: ", channel.name);
  85         if ((ret = lttng_enable_channel(handle, &channel)) < 0) {
  86                 printf("error enable channel: %s\n", lttng_strerror(ret));
  87                 goto enable_fail;
  88         }
  89         PRINT_OK();
  90
  91         printf("Enabling %s UST event: ", ev1.name);
  92     if ((ret = lttng_enable_event(handle, &ev1, channel.name)) < 0) {
  93         printf("error enabling event: %s\n", lttng_strerror(ret));
  94                 goto enable_fail;
  95     }
  96         PRINT_OK();
  97
  98         printf("Enabling %s UST event: ", ev2.name);
  99         if ((ret = lttng_enable_event(handle, &ev2, channel.name)) < 0) {
 100                 printf("error enabling event: %s\n", lttng_strerror(ret));
 101                 goto enable_fail;
 102         }
 103         PRINT_OK();
 104
 105         printf("Enabling %s UST event: ", ev3.name);
 106         if ((ret = lttng_enable_event(handle, &ev3, channel.name)) < 0) {
 107                 printf("error enabling event: %s\n", lttng_strerror(ret));
 108                 goto enable_fail;
 109         }
 110         PRINT_OK();
 111
 112         printf("Disabling %s UST event: ", ev1.name);
 113         if ((ret = lttng_disable_event(handle, ev1.name, channel.name)) < 0) {
 114                 printf("error enabling event: %s\n", lttng_strerror(ret));
 115                 goto enable_fail;
 116         }
 117         PRINT_OK();
 118
 119         printf("Disabling %s UST event: ", ev3.name);
 120         if ((ret = lttng_disable_event(handle, ev3.name, channel.name)) < 0) {
 121                 printf("error enabling event: %s\n", lttng_strerror(ret));
 122                 goto enable_fail;
 123         }
 124         PRINT_OK();
 125
 126         printf("Renabling %s UST event: ", ev1.name);
 127         if ((ret = lttng_enable_event(handle, &ev1, channel.name)) < 0) {
 128                 printf("error enabling event: %s\n", lttng_strerror(ret));
 129                 goto enable_fail;
 130         }
 131         PRINT_OK();
 132
 133         printf("Renabling %s UST event: ", ev3.name);
 134         if ((ret = lttng_enable_event(handle, &ev3, channel.name)) < 0) {
 135                 printf("error enabling event: %s\n", lttng_strerror(ret));
 136                 goto enable_fail;
 137         }
 138         PRINT_OK();
 139
 140         printf("Start tracing: ");
 141         if ((ret = lttng_start_tracing(session_name)) < 0) {
 142                 printf("error starting tracing: %s\n", lttng_strerror(ret));
 143                 goto start_fail;
 144         }
 145         PRINT_OK();
 146
 147         sleep(2);
 148
 149         printf("Stop tracing: ");
 150         if ((ret = lttng_stop_tracing(session_name)) < 0) {
 151                 printf("error stopping tracing: %s\n", lttng_strerror(ret));
 152                 goto stop_fail;
 153         }
 154         PRINT_OK();
 155
 156         printf("Destroy tracing session: ");
 157         if ((ret = lttng_destroy_session(session_name)) < 0) {
 158                 printf("error destroying session: %s\n", lttng_strerror(ret));
 159         }
 160         PRINT_OK();
 161
 162         return 0;
 163
 164 create_fail:
 165         assert(ret != 0);
 166 handle_fail:
 167         assert(handle != NULL);
 168
 169 stop_fail:
 170 start_fail:
 171 enable_fail:
 172         lttng_destroy_session(session_name);
 173         lttng_destroy_handle(handle);
 174
 175     return 1;
 176 }