omp_in_parallel.c
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// RUN: %libomp-compile-and-run
#include <stdio.h>
#include "omp_testsuite.h"
/*
* Checks that false is returned when called from serial region
* and true is returned when called within parallel region.
*/
int test_omp_in_parallel()
{
int serial;
int isparallel;
serial = 1;
isparallel = 0;
serial = omp_in_parallel();
#pragma omp parallel
{
#pragma omp single
{
isparallel = omp_in_parallel();
}
}
return (!(serial) && isparallel);
}
int main()
{
int i;
int num_failed=0;
// the test requires more than 1 thread to pass
omp_set_dynamic(0); // disable dynamic adjustment of threads
if (omp_get_max_threads() == 1)
omp_set_num_threads(2); // set 2 threads if no HW resources available
for(i = 0; i < REPETITIONS; i++) {
if(!test_omp_in_parallel()) {
num_failed++;
}
}
return num_failed;
}