libthreads: don't create ModelAction for thrd_join()
[model-checker.git] / libthreads.cc
1 #include "libthreads.h"
2 #include "common.h"
3 #include "threads.h"
4
5 /* global "model" object */
6 #include "model.h"
7
8 /*
9  * User program API functions
10  */
11 int thrd_create(thrd_t *t, void (*start_routine)(), void *arg)
12 {
13         int ret;
14         DBG();
15         ret = model->add_thread(new Thread(t, start_routine, arg));
16         DEBUG("create thread %d\n", thrd_to_id(*t));
17         return ret;
18 }
19
20 int thrd_join(thrd_t t)
21 {
22         int ret = 0;
23         Thread *th = model->get_thread(thrd_to_id(t));
24         while (th->get_state() != THREAD_COMPLETED && !ret)
25                 ret = model->switch_to_master(NULL);
26         return ret;
27 }
28
29 int thrd_yield(void)
30 {
31         /* seq_cst is just a 'don't care' parameter */
32         return model->switch_to_master(new ModelAction(THREAD_YIELD, memory_order_seq_cst, NULL, VALUE_NONE));
33 }
34
35 thrd_t thrd_current(void)
36 {
37         return thread_current()->get_thrd_t();
38 }