source: CIVL/examples/library/omp/reduction.cvl@ 8dfcbb9

#include<civlc.cvh>
#include<civl-omp.cvh>
#include<stdio.h>

void main(){
  int sum = 0;
  $omp_gteam gteam = $omp_gteam_create($here, 3);
  $omp_gshared gshared = $omp_gshared_create(gteam, &sum);  

  void thread(int tid) {
    int sum_local;
    int sum_status;
    int private;
    int _sum = 0;

    $omp_team team = $omp_team_create($here, gteam, tid);
    $omp_shared shared = $omp_shared_create(team, gshared, &sum_local, &sum_status);
    printf("Hello from thread %d\n", tid);
    //(reduction) sum = sum + tid;
    _sum = _sum + tid+1;
    $omp_apply_assoc(shared, _SUM, &_sum);
    $omp_barrier_and_flush(team);
    $omp_read(shared, &private, &sum_local);
    $omp_barrier_and_flush(team);
    $assert(private == 6);
    $omp_shared_destroy(shared);
    $omp_team_destroy(team);
  }
  
  $parfor (int i: ($domain){ 0 .. 2 }) {
    thread(i);
  }
  $assert(sum == 6);
  $omp_gshared_destroy(gshared);
  $omp_gteam_destroy(gteam);
}