File: omp_nested.c

package info (click to toggle)
llvm-toolchain-13 1%3A13.0.1-6~deb11u1
  • links: PTS, VCS
  • area: main
  • in suites: bullseye
  • size: 1,418,812 kB
  • sloc: cpp: 5,290,827; ansic: 996,570; asm: 544,593; python: 188,212; objc: 72,027; lisp: 30,291; f90: 25,395; sh: 24,900; javascript: 9,780; pascal: 9,398; perl: 7,484; ml: 5,432; awk: 3,523; makefile: 2,892; xml: 953; cs: 573; fortran: 539
file content (49 lines) | stat: -rw-r--r-- 847 bytes parent folder | download | duplicates (25) 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
 
// RUN: %libomp-compile-and-run
#include <stdio.h>
#include "omp_testsuite.h"

/*
 * Test if the compiler supports nested parallelism
 * By Chunhua Liao, University of Houston
 * Oct. 2005
 */
int test_omp_nested()
{
#ifdef _OPENMP
  if (omp_get_max_threads() > 4)
    omp_set_num_threads(4);
  if (omp_get_max_threads() < 2)
    omp_set_num_threads(2);
#endif

  int counter = 0;
#ifdef _OPENMP
  omp_set_nested(1);
  omp_set_max_active_levels(omp_get_supported_active_levels());
#endif

  #pragma omp parallel shared(counter)
  {
    #pragma omp critical
    counter++;
    #pragma omp parallel
    {
      #pragma omp critical
      counter--;
    }
  }
  return (counter != 0);
}

int main()
{
  int i;
  int num_failed=0;

  for(i = 0; i < REPETITIONS; i++) {
    if(!test_omp_nested()) {
      num_failed++;
    }
  }
  return num_failed;
}