ER
ini_mtx(ID mtxid)
{
MTXCB *p_mtxcb;
TCB *p_loctsk;
bool_t dspreq;
ER ercd;
LOG_INI_MTX_ENTER(mtxid);
CHECK_TSKCTX_UNL();
CHECK_MTXID(mtxid);
p_mtxcb = get_mtxcb(mtxid);
t_lock_cpu();
dspreq = init_wait_queue(&(p_mtxcb->wait_queue));
p_loctsk = p_mtxcb->p_loctsk;
if (p_loctsk != NULL) {
queue_delete(&(p_mtxcb->mutex_queue));
p_mtxcb->p_loctsk = NULL;
if (MTX_CEILING(p_mtxcb)) {
if (mutex_drop_priority(p_loctsk, p_mtxcb->p_mtxinib->ceilpri)) {
dspreq = true;
}
}
}
if (dspreq) {
dispatch();
}
ercd = E_OK;
t_unlock_cpu();
error_exit:
LOG_INI_MTX_LEAVE(ercd);
return(ercd);
}
ER
ini_mtx(ID mtxid)
{
MTXCB *p_mtxcb, **pp_prevmtx;
TCB *p_loctsk;
ER ercd;
LOG_INI_MTX_ENTER(mtxid);
CHECK_TSKCTX_UNL();
CHECK_ID(VALID_MTXID(mtxid));
p_mtxcb = get_mtxcb(mtxid);
lock_cpu();
if (p_mtxcb->p_mtxinib->mtxatr == TA_NOEXS) {
ercd = E_NOEXS;
}
else if (VIOLATE_ACPTN(p_mtxcb->p_mtxinib->acvct.acptn3)) {
ercd = E_OACV;
}
else {
init_wait_queue(&(p_mtxcb->wait_queue));
p_loctsk = p_mtxcb->p_loctsk;
if (p_loctsk != NULL) {
p_mtxcb->p_loctsk = NULL;
pp_prevmtx = &(p_loctsk->p_lastmtx);
while (*pp_prevmtx != NULL) {
if (*pp_prevmtx == p_mtxcb) {
*pp_prevmtx = p_mtxcb->p_prevmtx;
break;
}
pp_prevmtx = &((*pp_prevmtx)->p_prevmtx);
}
mutex_drop_priority(p_loctsk, p_mtxcb);
}
if (p_runtsk != p_schedtsk) {
dispatch();
}
ercd = E_OK;
}
unlock_cpu();
error_exit:
LOG_INI_MTX_LEAVE(ercd);
return(ercd);
}