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// RUN: %libomp-cxx-compile-and-run
#include <assert.h>
#include <stdio.h>
#include <stdlib.h>
#include <omp.h>
// The number of times to run each test
#define NTIMES 2
// Every thread creates a single "increment" task
void test_tasks() {
for (int i = 0; i < 100; ++i)
#pragma omp task
{
int tid = omp_get_thread_num();
}
}
// Testing single level of parallelism with increment tasks
void test_base(int nthreads) {
#ifdef VERBOSE
#pragma omp master
printf(" test_base(%d)\n", nthreads);
#endif
#pragma omp parallel num_threads(nthreads)
{ test_tasks(); }
}
// Testing nested parallel with increment tasks
// first = nthreads of outer parallel
// second = nthreads of nested parallel
void test_nest(int first, int second) {
#ifdef VERBOSE
#pragma omp master
printf(" test_nest(%d, %d)\n", first, second);
#endif
#pragma omp parallel num_threads(first)
{
for (int i = 0; i < 100; ++i)
#pragma omp task
{
int tid = omp_get_thread_num();
}
test_base(second);
}
}
template <typename... Args>
void run_ntimes(int n, void (*func)(Args...), Args... args) {
for (int i = 0; i < n; ++i) {
func(args...);
}
}
int main() {
omp_set_max_active_levels(5);
for (int i = 0; i < 100; ++i) {
run_ntimes(NTIMES, test_nest, 4, 3);
run_ntimes(NTIMES, test_nest, 2, 1);
}
printf("PASS\n");
return EXIT_SUCCESS;
}
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