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// RUN: %libomp-compile-and-run
// UNSUPPORTED: gcc-4, gcc-5, gcc-6, gcc-7, gcc-8
// UNSUPPORTED: icc, clang
#include <stdio.h>
#include <stdlib.h>
#include <omp.h>
#define NUM_TEAMS 2
#define NUM_THREADS_PER_TEAM 3
int main(int argc, char** argv) {
#pragma omp teams num_teams(NUM_TEAMS)
{
int i;
int members[NUM_THREADS_PER_TEAM];
// Only an upper bound is guaranteed for number of teams
int nteams = omp_get_num_teams();
if (nteams > NUM_TEAMS) {
fprintf(stderr, "error: too many teams: %d\n", nteams);
exit(1);
}
for (i = 0; i < NUM_THREADS_PER_TEAM; ++i)
members[i] = -1;
#pragma omp parallel num_threads(NUM_THREADS_PER_TEAM) private(i)
{
int tid = omp_get_thread_num();
int team_id = omp_get_team_num();
int nthreads = omp_get_num_threads();
if (nthreads != NUM_THREADS_PER_TEAM) {
fprintf(stderr, "error: detected number of threads (%d) is not %d\n",
nthreads, NUM_THREADS_PER_TEAM);
exit(1);
}
if (tid < 0 || tid >= nthreads) {
fprintf(stderr, "error: thread id is out of range: %d\n", tid);
exit(1);
}
if (team_id < 0 || team_id > omp_get_num_teams()) {
fprintf(stderr, "error: team id is out of range: %d\n", team_id);
exit(1);
}
members[omp_get_thread_num()] = 1;
#pragma omp barrier
#pragma omp single
{
for (i = 0; i < NUM_THREADS_PER_TEAM; ++i) {
if (members[i] != 1) {
fprintf(stderr, "error: worker %d not flagged\n", i);
exit(1);
}
}
}
}
}
return 0;
}
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