52 lines
876 B
C++
52 lines
876 B
C++
|
#include <omp.h>
|
||
|
#include <stdlib.h>
|
||
|
|
||
|
int
|
||
|
main (void)
|
||
|
{
|
||
|
int i = 0, j = 0, k = ~0, l;
|
||
|
double d = 1.0;
|
||
|
#pragma omp parallel num_threads(4)
|
||
|
{
|
||
|
#pragma omp single
|
||
|
{
|
||
|
i = 16;
|
||
|
k ^= (1 << 16);
|
||
|
d += 32.0;
|
||
|
}
|
||
|
|
||
|
#pragma omp for reduction(+:i) reduction(*:d) reduction(&:k) nowait
|
||
|
for (l = 0; l < 4; l++)
|
||
|
{
|
||
|
if (omp_get_num_threads () == 4 && (i != 0 || d != 1.0 || k != ~0))
|
||
|
#pragma omp atomic
|
||
|
j |= 1;
|
||
|
|
||
|
if (l == omp_get_thread_num ())
|
||
|
{
|
||
|
i = omp_get_thread_num ();
|
||
|
d = i + 1;
|
||
|
k = ~(1 << (2 * i));
|
||
|
}
|
||
|
}
|
||
|
|
||
|
if (omp_get_num_threads () == 4)
|
||
|
{
|
||
|
#pragma omp barrier
|
||
|
if (i != (16 + 0 + 1 + 2 + 3))
|
||
|
#pragma omp atomic
|
||
|
j |= 2;
|
||
|
if (d != (33.0 * 1.0 * 2.0 * 3.0 * 4.0))
|
||
|
#pragma omp atomic
|
||
|
j |= 4;
|
||
|
if (k != (~0 ^ 0x55 ^ (1 << 16)))
|
||
|
#pragma omp atomic
|
||
|
j |= 8;
|
||
|
}
|
||
|
}
|
||
|
|
||
|
if (j)
|
||
|
abort ();
|
||
|
return 0;
|
||
|
}
|