| // 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); |
| #endif |
| |
| int counter = 0; |
| #ifdef _OPENMP |
| omp_set_nested(1); |
| #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; |
| } |