15 static K_THREAD_STACK_DEFINE(tstack, STACK_SIZE);
16 static K_THREAD_STACK_DEFINE(high_stack, STACK_SIZE);
17 static K_THREAD_STACK_DEFINE(low_stack, STACK_SIZE);
19 static struct k_thread tdata, high_tdata, low_tdata;
20 static struct k_mbox mbox, multi_tmbox;
21 static struct k_sem sync_sema;
22 static k_tid_t tid1, receiver_tid;
23 static char msg_data[2][MAIL_LEN] = {
27 static enum mmsg_type {
32 static void msg_sender(struct k_mbox *pmbox, k_timeout_t timeout)  in msg_sender()
34 	static struct k_mbox_msg mmsg;  in msg_sender()
54 static void msg_receiver(struct k_mbox *pmbox, k_tid_t thd_id,  in msg_receiver()
57 	static struct k_mbox_msg mmsg;  in msg_receiver()
58 	static char rxdata[MAIL_LEN];  in msg_receiver()
80 static void test_mbox_init(void)  in test_mbox_init()
88 static void test_send(void *p1, void *p2, void *p3)  in test_send()
96 	static k_tid_t tid;  in ZTEST()
109 static void test_send_un(void *p1, void *p2, void *p3)  in test_send_un()
129 static void thread_low_prio(void *p1, void *p2, void *p3)  in thread_low_prio()
131 	static struct k_mbox_msg mmsg = {0};  in thread_low_prio()
132 	static char rxdata[MAIL_LEN];  in thread_low_prio()
146 static void thread_high_prio(void *p1, void *p2, void *p3)  in thread_high_prio()
148 	static struct k_mbox_msg mmsg = {0};  in thread_high_prio()
149 	static char rxdata[MAIL_LEN];  in thread_high_prio()
165 	static k_tid_t low_prio, high_prio;  in ZTEST()