| 1 | // RUN: %libomp-compile-and-run |
|---|---|
| 2 | #include <stdio.h> |
| 3 | #include "omp_testsuite.h" |
| 4 | |
| 5 | int test_omp_parallel_num_threads() |
| 6 | { |
| 7 | int num_failed; |
| 8 | int threads; |
| 9 | int nthreads; |
| 10 | int max_threads = 0; |
| 11 | |
| 12 | num_failed = 0; |
| 13 | |
| 14 | /* first we check how many threads are available */ |
| 15 | #pragma omp parallel |
| 16 | { |
| 17 | #pragma omp master |
| 18 | max_threads = omp_get_num_threads (); |
| 19 | } |
| 20 | |
| 21 | /* we increase the number of threads from one to maximum:*/ |
| 22 | for(threads = 1; threads <= max_threads; threads++) { |
| 23 | nthreads = 0; |
| 24 | #pragma omp parallel reduction(+:num_failed) num_threads(threads) |
| 25 | { |
| 26 | num_failed = num_failed + !(threads == omp_get_num_threads()); |
| 27 | #pragma omp atomic |
| 28 | nthreads += 1; |
| 29 | } |
| 30 | num_failed = num_failed + !(nthreads == threads); |
| 31 | } |
| 32 | return (!num_failed); |
| 33 | } |
| 34 | |
| 35 | int main() |
| 36 | { |
| 37 | int i; |
| 38 | int num_failed=0; |
| 39 | |
| 40 | for(i = 0; i < REPETITIONS; i++) { |
| 41 | if(!test_omp_parallel_num_threads()) { |
| 42 | num_failed++; |
| 43 | } |
| 44 | } |
| 45 | return num_failed; |
| 46 | } |
| 47 |