Hi, I think I have figured it out:
The issue may be that internally openmp may be allocating thread
identifiers that may already be used by pthread so pthread_join
somehow ends up waiting for the parent thread to finish, deadlocking
itself.
Try this:
#include <cstdio>
#include <omp.h>
#include <pthread.h>
void *do_thread(void *) {
int niterations = 200;
int i;
#pragma omp parallel for
for (i = 0; i < niterations; i++)
{
printf ("ducks\n");
}
return NULL;
}
int main() {
pthread_t id1, id2;
pthread_create(&id1, NULL, do_thread, NULL);
pthread_create(&id2, NULL, do_thread, NULL);
pthread_join (id2, NULL);
pthread_join (id1, NULL);
}
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