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50 lines
847 B
50 lines
847 B
7 months ago
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// RUN: %libomp-compile-and-run
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#include <stdio.h>
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#include "omp_testsuite.h"
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/*
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* Test if the compiler supports nested parallelism
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* By Chunhua Liao, University of Houston
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* Oct. 2005
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*/
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int test_omp_nested()
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{
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#ifdef _OPENMP
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if (omp_get_max_threads() > 4)
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omp_set_num_threads(4);
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if (omp_get_max_threads() < 2)
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omp_set_num_threads(2);
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#endif
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int counter = 0;
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#ifdef _OPENMP
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omp_set_nested(1);
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omp_set_max_active_levels(omp_get_supported_active_levels());
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#endif
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#pragma omp parallel shared(counter)
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{
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#pragma omp critical
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counter++;
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#pragma omp parallel
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{
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#pragma omp critical
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counter--;
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}
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}
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return (counter != 0);
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}
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int main()
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{
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int i;
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int num_failed=0;
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for(i = 0; i < REPETITIONS; i++) {
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if(!test_omp_nested()) {
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num_failed++;
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}
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}
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return num_failed;
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}
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