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// RUN: %libomp-compile-and-run
// RUN: %libomp-compile && env KMP_TASKLOOP_MIN_TASKS=1 %libomp-run
// These compilers don't support the taskloop construct
// UNSUPPORTED: gcc-4, gcc-5, icc-16
/*
* Test for taskloop
* Method: caculate how many times the iteration space is dispatched
* and judge if each dispatch has the requested grainsize
* It is possible for two adjacent chunks are executed by the same thread
*/
#include <stdio.h>
#include <omp.h>
#include <stdlib.h>
#include "omp_testsuite.h"
#define CFDMAX_SIZE 1120
int test_omp_taskloop_num_tasks()
{
int i;
int *tids;
int *tidsArray;
int count;
int result = 0;
int num_tasks;
for (num_tasks = 1; num_tasks < 120; ++num_tasks) {
count = 0;
tidsArray = (int *)malloc(sizeof(int) * CFDMAX_SIZE);
tids = tidsArray;
#pragma omp parallel shared(tids)
{
int i;
#pragma omp master
#pragma omp taskloop num_tasks(num_tasks)
for (i = 0; i < CFDMAX_SIZE; i++) {
tids[i] = omp_get_thread_num();
}
}
for (i = 0; i < CFDMAX_SIZE - 1; ++i) {
if (tids[i] != tids[i + 1]) {
count++;
}
}
if (count > num_tasks) {
fprintf(stderr, "counted too many tasks: (wanted %d, got %d)\n",
num_tasks, count);
result++;
}
}
return (result==0);
}
int main()
{
int i;
int num_failed=0;
for (i = 0; i < REPETITIONS; i++) {
if (!test_omp_taskloop_num_tasks()) {
num_failed++;
}
}
return num_failed;
}
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