omp_task_depend_resize_hashmap.c

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// RUN: %libomp-compile && env KMP_ENABLE_TASK_THROTTLING=0 %libomp-run
 
// This test is known to be fragile on NetBSD kernel at the moment,
// https://bugs.llvm.org/show_bug.cgi?id=42020.
// UNSUPPORTED: netbsd
 
// Very flaky on openmp-clang-x86_64-linux-debian.
// https://bugs.llvm.org/show_bug.cgi?id=45397
// UNSUPPORTED: linux
 
#include<omp.h>
#include<stdlib.h>
#include<string.h>
 
// The first hashtable static size is 997
#define NUM_DEPS 4000
 
 
int main()
{
  int *deps = calloc(NUM_DEPS, sizeof(int));
  int i;
  int failed = 0;
 
  #pragma omp parallel
  #pragma omp master
  {
    for (i = 0; i < NUM_DEPS; i++) {
      #pragma omp task firstprivate(i) depend(inout: deps[i])
      {
        deps[i] = 1;
      }
      #pragma omp task firstprivate(i) depend(inout: deps[i])
      {
        deps[i] = 2;
      }
    }
  }
 
  for (i = 0; i < NUM_DEPS; i++) {
    if (deps[i] != 2)
      failed++;
  }
 
  return failed;
}