[SOLVED] CS /* Verifies that lowering a threads priority so that it is no

/* Verifies that lowering a threads priority so that it is no
longer the highest-priority thread in the system causes it to
yield immediately. */

#include
#include tests/threads/tests.h
#include threads/init.h
#include threads/thread.h

static thread_func changing_thread;

void
test_priority_change(void)
{
/* This test does not work with the MLFQS. */
ASSERT(!thread_mlfqs);

msg(Creating a high-priority thread 2.);
thread_create(thread 2, PRI_DEFAULT + 1, changing_thread, NULL);
msg(Thread 2 should have just lowered its priority.);
thread_set_priority(PRI_DEFAULT 2);
msg(Thread 2 should have just exited.);
}

static void
changing_thread(void *aux UNUSED)
{
msg(Thread 2 now lowering priority.);
thread_set_priority(PRI_DEFAULT 1);
msg(Thread 2 exiting.);
}