/**
* @brief Sends a message to the specified thread.
* @details The sender is stopped until the receiver executes a
* @p chMsgRelease()after receiving the message.
*
* @param[in] tp the pointer to the thread
* @param[in] msg the message
* @return The answer message from @p chMsgRelease().
*
* @api
*/
msg_t chMsgSend(Thread *tp, msg_t msg) {
Thread *ctp = currp;
chDbgCheck(tp != NULL, "chMsgSend");
chSysLock();
ctp->p_msg = msg;
ctp->p_u.wtobjp = &tp->p_msgqueue;
msg_insert(ctp, &tp->p_msgqueue);
if (tp->p_state == THD_STATE_WTMSG)
chSchReadyI(tp);
chSchGoSleepS(THD_STATE_SNDMSGQ);
msg = ctp->p_u.rdymsg;
chSysUnlock();
return msg;
}
/**
* @brief Sends a message to the specified thread.
* @details The sender is stopped until the receiver executes a
* @p chMsgRelease()after receiving the message.
*
* @param[in] tp the pointer to the thread
* @param[in] msg the message
* @return The answer message from @p chMsgRelease().
*
* @api
*/
msg_t chMsgSend(thread_t *tp, msg_t msg) {
thread_t *ctp = currp;
chDbgCheck(tp != NULL);
chSysLock();
ctp->u.sentmsg = msg;
msg_insert(ctp, &tp->msgqueue);
if (tp->state == CH_STATE_WTMSG) {
(void) chSchReadyI(tp);
}
chSchGoSleepS(CH_STATE_SNDMSGQ);
msg = ctp->u.rdymsg;
chSysUnlock();
return msg;
}
