openmp/tools/archer/tests/task/task-taskwait.c

   1 /*
   2  * task-taskwait.c -- Archer testcase
   3  */
   4
   5 //===----------------------------------------------------------------------===//
   6 //
   7 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
   8 //
   9 // See tools/archer/LICENSE.txt for details.
  10 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
  11 //
  12 //===----------------------------------------------------------------------===//
  13
  14
  15 // RUN: %libarcher-compile-and-run | FileCheck %s
  16 // REQUIRES: tsan
  17 #include <omp.h>
  18 #include <stdio.h>
  19 #include <unistd.h>
  20 #include "ompt/ompt-signal.h"
  21
  22 int main(int argc, char *argv[]) {
  23   int var = 0, a = 0;
  24
  25 #pragma omp parallel num_threads(2) shared(var, a)
  26 #pragma omp master
  27   {
  28 #pragma omp task shared(var, a)
  29     {
  30       OMPT_SIGNAL(a);
  31       OMPT_WAIT(a, 2);
  32       delay(100);
  33       var++;
  34     }
  35
  36     // Give other thread time to steal the task.
  37     OMPT_WAIT(a, 1);
  38     OMPT_SIGNAL(a);
  39 #pragma omp taskwait
  40     var++;
  41   }
  42
  43   fprintf(stderr, "DONE\n");
  44   int error = (var != 2);
  45   return error;
  46 }
  47
  48 // CHECK-NOT: ThreadSanitizer: data race
  49 // CHECK-NOT: ThreadSanitizer: reported
  50 // CHECK: DONE