Test which checks the firstprivate clause of the task directive. We create a set of tasks in a single region. We defines a variable named sum unequal zero which gets declared firstprivate for each task. Now each task calcualtes a sum using this private variable. Before each calcualation step we introduce a flush command so that maybe the private variabel gets bad. At the end we check if the calculated sum was right.
3.0
omp task firstprivate
omp single,omp flush,omp critical
#include
#include
#include "omp_testsuite.h"
int omp_task_firstprivate (FILE * logFile)
{
int i;
int sum = 1234;
int known_sum;
int result = 0; /* counts the wrong sums from tasks */
known_sum = 1234 + (LOOPCOUNT * (LOOPCOUNT + 1)) / 2;
#pragma omp parallel
{
#pragma omp single
{
for (i = 0; i < NUM_TASKS; i++)
{
#pragma omp task firstprivate(sum)
{
int j;
for (j = 0; j <= LOOPCOUNT; j++) {
#pragma omp flush
sum += j;
}
/* check if calculated sum was right */
if (sum != known_sum) {
#pragma omp critical
{ result++; }
}
} /* end of omp task */
} /* end of for */
} /* end of single */
} /* end of parallel*/
return (result == 0);
}