tests/hello/tp.c

   1 /* Copyright (C) 2009  Pierre-Marc Fournier
   2  *
   3  * This library is free software; you can redistribute it and/or
   4  * modify it under the terms of the GNU Lesser General Public
   5  * License as published by the Free Software Foundation; either
   6  * version 2.1 of the License, or (at your option) any later version.
   7  *
   8  * This library is distributed in the hope that it will be useful,
   9  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  10  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  11  * Lesser General Public License for more details.
  12  *
  13  * You should have received a copy of the GNU Lesser General Public
  14  * License along with this library; if not, write to the Free Software
  15  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301 USA
  16  */
  17
  18 #include "tp.h"
  19 #include <ust/marker.h>
  20 #include "usterr.h"
  21
  22 struct hello_trace_struct {
  23         char *message;
  24 };
  25
  26 struct hello_trace_struct hello_struct = {
  27         .message = "ehlo\n",
  28 };
  29
  30 DEFINE_TRACEPOINT(hello_tptest);
  31
  32 void tptest_probe(void *data, int anint)
  33 {
  34         struct hello_trace_struct *hello;
  35         hello=(struct hello_trace_struct *)data;
  36         DBG("in tracepoint probe...");
  37         printf("this is the message: %s\n", hello->message);
  38 }
  39
  40 void tptest2_probe(void *data)
  41 {
  42 }
  43
  44 static void __attribute__((constructor)) init()
  45 {
  46         DBG("connecting tracepoint...\n");
  47         register_tracepoint(hello_tptest, tptest_probe, &hello_struct);
  48         register_tracepoint(hello_tptest2, tptest2_probe, &hello_struct);
  49 }