// create pthread, add it to thread table
int mypthread_create(mypthread_t *thread, void *(*start_routine) (void *), void *arg)
{
int i, first = 0;
if (!tableup) {
ttable_init();
start_timer();
first = 1;
}
// set up context
getcontext(&thread->ctx);
thread->ctx.uc_stack.ss_sp = calloc(STACK_SZ, 1);
thread->ctx.uc_stack.ss_size = STACK_SZ;
thread->ctx.uc_link = NULL;
makecontext(&thread->ctx, (start_t)start, 1, thread);
thread->arg = arg;
thread->fn = start_routine;
thread->state = RUNNABLE;
thread->join_id = 0;
thread->retval = NULL;
for (i = 1; i < MAX_THREADS; i++) {
if (ttable[i] == NULL || ttable[i]->state == UNUSED) {
ttable[i] = thread;
thread->id = i;
if (first) {
// set up main() thread
ttable[0]->state = RUNNABLE;
ttable[0]->id = 0;
ttable[0]->retval = NULL;
ttable[0]->join_id = 0;
getcontext(&ttable[0]->ctx);
}
return 0;
}
}
return -1;
}
void
vpnapi_output_init()
{
ttable_init(&ttable);
}
