gdb/testsuite/gdb.threads/omp-task.c

   1 /* This testcase is part of GDB, the GNU debugger.
   2
   3    Copyright 2022-2024 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    Tests which verify (or not) that GDB can access shared and private
  19    clauses of OpenMP task construct.
  20 */
  21
  22 #include <stdio.h>
  23 #include <omp.h>
  24
  25 int foo(int n) {
  26   int share1 = 9, share2 = 11, share3 = 13, priv1, priv2, fpriv;
  27   fpriv = n + 4;
  28
  29   if (n < 2)
  30     return n;
  31   else {
  32 #pragma omp task shared(share1, share2) private(priv1, priv2) firstprivate(fpriv) shared(share3)
  33     {
  34       priv1 = n;
  35       priv2 = n + 2;
  36       share2 += share3;
  37       printf("share1 = %d, share2 = %d, share3 = %d\n", share1, share2, share3);
  38       share1 = priv1 + priv2 + fpriv + foo(n - 1) + share2 + share3;
  39     }
  40 #pragma omp taskwait
  41     return share1 + share2 + share3;
  42   }
  43 }
  44
  45 int main() {
  46   int n = 10;
  47   printf("foo(%d) = %d\n", n, foo(n));
  48   return 0;
  49 }