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      1 /* This testcase is part of GDB, the GNU debugger.
      2 
      3    Copyright 2023-2024 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 */
     19 
     20 #include <unistd.h>
     21 #include <stdint.h>
     22 
     23 uint64_t global_var;
     24 
     25 /* How long to usleep, in us.  The exp file assumes this is lower than
     26    1s.  */
     27 #define MS_USLEEP 100000
     28 
     29 /* How many increments per second MS_USLEEP corresponds to.  */
     30 #define INCREMENTS_PER_SEC (1000000 / MS_USLEEP)
     31 
     32 int
     33 main ()
     34 {
     35   while (1)
     36     {
     37       usleep (MS_USLEEP);
     38       global_var++;
     39 
     40       /* Time out after 30s.  */
     41       if (global_var >= (30 * INCREMENTS_PER_SEC))
     42 	return 1;
     43     }
     44 
     45   return 0;
     46 }
     47