tests/regression/ust/low-throughput/main.c

   1 /*
   2  * Copyright (C) 2012 - David Goulet <dgoulet@efficios.com>
   3  *
   4  * This library is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU Lesser General Public
   6  * License as published by the Free Software Foundation; version 2.1 of
   7  * the License.
   8  *
   9  * This library 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 GNU
  12  * Lesser General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU Lesser General Public
  15  * License along with this library; if not, write to the Free Software
  16  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301 USA
  17  */
  18
  19 #include <poll.h>
  20 #include <pthread.h>
  21 #include <stdio.h>
  22 #include <stdlib.h>
  23
  24 #define TRACEPOINT_DEFINE
  25 #include "tp.h"
  26
  27 /*
  28  * Thread recording a tracepoint every minute for 20 minutes.
  29  */
  30 static void *th_event_minute(void *data)
  31 {
  32         int i;
  33
  34         /* Loop for 20 minutes */
  35         for (i = 1; i < 21; i++) {
  36                 /* Sleep 60 seconds */
  37                 poll(NULL, 0, 60000);
  38
  39                 /* 20 minutes tracepoint */
  40                 if ((i % 20) == 0) {
  41                         tracepoint(tp, slow, i, "twenty");
  42                 }
  43
  44                 /* 10 minutes tracepoint */
  45                 if ((i % 10) == 0) {
  46                         tracepoint(tp, slow, i, "ten");
  47                 }
  48
  49                 /* 1 minute tracepoint */
  50                 tracepoint(tp, slow, i, "one");
  51         }
  52
  53         return NULL;
  54 }
  55
  56 /*
  57  * main
  58  */
  59 int main(int argc, char **argv)
  60 {
  61         int ret;
  62         void *status;
  63         pthread_t thread;
  64
  65         ret = pthread_create(&thread, NULL, th_event_minute, NULL);
  66         if (ret != 0) {
  67                 perror("pthread_create event minute");
  68                 goto error;
  69         }
  70
  71         ret = pthread_join(thread, &status);
  72         if (ret != 0) {
  73                 perror("pthread_join");
  74                 goto error;
  75         }
  76
  77         return 0;
  78
  79 error:
  80         return 1;
  81 }