gdb/testsuite/gdb.trace/stap-trace.c

   1 /* This testcase is part of GDB, the GNU debugger.
   2
   3    Copyright 2012-2022 Free Software Foundation, Inc.
   4
   5    This program is free software; you can redistribute it and/or modify
   6    it under the terms of the GNU General Public License as published by
   7    the Free Software Foundation; either version 3 of the License, or
   8    (at your option) any later version.
   9
  10    This program is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13    GNU General Public License for more details.
  14
  15    You should have received a copy of the GNU General Public License
  16    along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
  17
  18 #if USE_PROBES
  19
  20 #define _SDT_HAS_SEMAPHORES
  21 __extension__ unsigned short test_user_semaphore __attribute__ ((unused)) __attribute__ ((section (".probes")));
  22 #define TEST test_user_semaphore
  23
  24 __extension__ unsigned short test_two_semaphore __attribute__ ((unused)) __attribute__ ((section (".probes")));
  25 #define TEST2 test_two_semaphore
  26
  27 #else
  28
  29 #define TEST 1
  30 #define TEST2 1
  31
  32 #endif /* USE_PROBES */
  33
  34 #include <sys/sdt.h>
  35
  36 /* We only support SystemTap and only the v3 form.  */
  37 #if _SDT_NOTE_TYPE != 3
  38 #error "not using SystemTap v3 probes"
  39 #endif
  40
  41 void
  42 m1 (int x)
  43 {
  44   if (TEST2)
  45     STAP_PROBE1 (test, two, x);
  46 }
  47
  48 int
  49 f (int x)
  50 {
  51   if (TEST)
  52     STAP_PROBE1(test, user, x);
  53   return x+5;
  54 }
  55
  56 void
  57 nothing (void)
  58 {
  59   int a = 1 + 1;
  60   return;
  61 }
  62
  63 int
  64 main()
  65 {
  66   f (f (23));
  67   m1 (46);
  68   nothing (); /* end-here */
  69
  70   return 0;
  71 }