int Create(ucontext_t* starting_context)
{
if(thread_counter + 1 > MAX_THREADS) // Maximum number of threads reached. We don't create the thread.
{
return ERROR;
}
TCB* thread = TCB_create(tid_counter, starting_context, READY);
if(thread == NULL)
{
return ERROR;
}
tid_counter++;
thread_counter++;
int result = TCB_list_add(all_threads, thread);
if(result == ERROR)
{
return ERROR;
}
return Ready(thread); // Changes the thread state to "ready" and enqueues it
}
int TCB_block(TCB* waiting_thread, TCB* blocking_thread)
{
if(blocking_thread == NULL)
{
return ERROR;
}
else if(waiting_thread == NULL)
{
return ERROR;
}
else
{
TCB_list_add(blocking_thread->waiting_for_me, waiting_thread);
waiting_thread->state = BLOCKED;
return NO_ERROR;
}
}
