SYSCALL INT _tk_rcv_mbf_u( ID mbfid, void *msg, TMO_U tmout )
{
MBFCB *mbfcb;
TCB *tcb;
INT rcvsz;
ER ercd = E_OK;
CHECK_MBFID(mbfid);
CHECK_TMOUT(tmout);
CHECK_DISPATCH();
mbfcb = get_mbfcb(mbfid);
BEGIN_CRITICAL_SECTION;
if (mbfcb->mbfid == 0) {
ercd = E_NOEXS;
goto error_exit;
}
/* Check receive wait disable */
if ( is_diswai((GCB*)mbfcb, ctxtsk, TTW_RMBF) ) {
ercd = E_DISWAI;
goto error_exit;
}
if ( !mbf_empty(mbfcb) ) {
/* Read from message buffer */
rcvsz = mbf_to_msg(mbfcb, msg);
/* Accept message from sending task(s) */
mbf_wakeup(mbfcb);
} else if ( !isQueEmpty(&mbfcb->send_queue) ) {
/* Receive directly from send wait task */
tcb = (TCB*)mbfcb->send_queue.next;
rcvsz = tcb->winfo.smbf.msgsz;
memcpy(msg, tcb->winfo.smbf.msg, (UINT)rcvsz);
wait_release_ok(tcb);
mbf_wakeup(mbfcb);
} else {
ercd = E_TMOUT;
if ( tmout != TMO_POL ) {
/* Ready for receive wait */
ctxtsk->wspec = &wspec_rmbf;
ctxtsk->wid = mbfid;
ctxtsk->wercd = &ercd;
ctxtsk->winfo.rmbf.msg = msg;
ctxtsk->winfo.rmbf.p_msgsz = &rcvsz;
make_wait(tmout, mbfcb->mbfatr);
QueInsert(&ctxtsk->tskque, &mbfcb->recv_queue);
}
}
error_exit:
END_CRITICAL_SECTION;
return ( ercd < E_OK )? ercd: rcvsz;
}
SYSCALL ER _tk_get_mpl_u( ID mplid, INT blksz, void **p_blk, TMO_U tmout )
{
MPLCB *mplcb;
void *blk = NULL;
ER ercd = E_OK;
CHECK_MPLID(mplid);
CHECK_PAR(blksz > 0 && blksz <= MAX_ALLOCATE);
CHECK_TMOUT(tmout);
CHECK_DISPATCH();
mplcb = get_mplcb(mplid);
blksz = roundSize(blksz);
BEGIN_CRITICAL_SECTION;
if ( mplcb->mplid == 0 ) {
ercd = E_NOEXS;
goto error_exit;
}
#if CHK_PAR
if ( blksz > mplcb->mplsz ) {
ercd = E_PAR;
goto error_exit;
}
#endif
/* Check wait disable */
if ( is_diswai((GCB*)mplcb, ctxtsk, TTW_MPL) ) {
ercd = E_DISWAI;
goto error_exit;
}
if ( gcb_top_of_wait_queue((GCB*)mplcb, ctxtsk) == ctxtsk
&& (blk = get_blk(mplcb, blksz)) != NULL ) {
/* Get memory block */
*p_blk = blk;
} else {
/* Ready for wait */
ctxtsk->wspec = ( (mplcb->mplatr & TA_TPRI) != 0 )?
&wspec_mpl_tpri: &wspec_mpl_tfifo;
ctxtsk->wercd = &ercd;
ctxtsk->winfo.mpl.blksz = blksz;
ctxtsk->winfo.mpl.p_blk = p_blk;
gcb_make_wait_with_diswai((GCB*)mplcb, tmout);
}
error_exit:
END_CRITICAL_SECTION;
return ercd;
}
SYSCALL ER _tk_rcv_mbx_u( ID mbxid, T_MSG **ppk_msg, TMO_U tmout )
{
MBXCB *mbxcb;
ER ercd = E_OK;
CHECK_MBXID(mbxid);
CHECK_TMOUT(tmout);
CHECK_DISPATCH();
mbxcb = get_mbxcb(mbxid);
BEGIN_CRITICAL_SECTION;
if ( mbxcb->mbxid == 0 ) {
ercd = E_NOEXS;
goto error_exit;
}
/* Check receive wait disable */
if ( is_diswai((GCB*)mbxcb, ctxtsk, TTW_MBX) ) {
ercd = E_DISWAI;
goto error_exit;
}
if ( headmsg(mbxcb) != NULL ) {
/* Get message from head of queue */
*ppk_msg = headmsg(mbxcb);
headmsg(mbxcb) = nextmsg(*ppk_msg);
} else {
/* Ready for receive wait */
ctxtsk->wspec = ( (mbxcb->mbxatr & TA_TPRI) != 0 )?
&wspec_mbx_tpri: &wspec_mbx_tfifo;
ctxtsk->wercd = &ercd;
ctxtsk->winfo.mbx.ppk_msg = ppk_msg;
gcb_make_wait_with_diswai((GCB*)mbxcb, tmout);
}
error_exit:
END_CRITICAL_SECTION;
return ercd;
}
SYSCALL ER _tk_snd_mbf_u( ID mbfid, CONST void *msg, INT msgsz, TMO_U tmout )
{
MBFCB *mbfcb;
TCB *tcb;
ER ercd = E_OK;
CHECK_MBFID(mbfid);
CHECK_PAR(msgsz > 0);
CHECK_TMOUT(tmout);
CHECK_DISPATCH_POL(tmout);
mbfcb = get_mbfcb(mbfid);
BEGIN_CRITICAL_SECTION;
if ( mbfcb->mbfid == 0 ) {
ercd = E_NOEXS;
goto error_exit;
}
#if CHK_PAR
if ( msgsz > mbfcb->maxmsz ) {
ercd = E_PAR;
goto error_exit;
}
#endif
/* Check send wait disable */
if ( !in_indp() && is_diswai((GCB*)mbfcb, ctxtsk, TTW_SMBF) ) {
ercd = E_DISWAI;
goto error_exit;
}
if ( !isQueEmpty(&mbfcb->recv_queue) ) {
/* Send directly to the receive wait task */
tcb = (TCB*)mbfcb->recv_queue.next;
memcpy(tcb->winfo.rmbf.msg, msg, (UINT)msgsz);
*tcb->winfo.rmbf.p_msgsz = msgsz;
wait_release_ok(tcb);
} else if ( (in_indp() || gcb_top_of_wait_queue((GCB*)mbfcb, ctxtsk) == ctxtsk)
&&(mbf_free(mbfcb, msgsz)) ) {
/* Store the message to message buffer */
msg_to_mbf(mbfcb, msg, msgsz);
} else {
ercd = E_TMOUT;
if ( tmout != TMO_POL ) {
/* Ready for send wait */
ctxtsk->wspec = ( (mbfcb->mbfatr & TA_TPRI) != 0 )?
&wspec_smbf_tpri: &wspec_smbf_tfifo;
ctxtsk->wercd = &ercd;
ctxtsk->winfo.smbf.msg = msg;
ctxtsk->winfo.smbf.msgsz = msgsz;
gcb_make_wait_with_diswai((GCB*)mbfcb, tmout);
}
}
error_exit:
END_CRITICAL_SECTION;
return ercd;
}
/*
* Forward Rendezvous to Other Port
*/
SYSCALL ER _tk_fwd_por( ID porid, UINT calptn, RNO rdvno, void *msg, INT cmsgsz )
{
PORCB *porcb;
TCB *caltcb, *tcb;
QUEUE *queue;
RNO new_rdvno;
ER ercd = E_OK;
CHECK_PORID(porid);
CHECK_PAR(calptn != 0);
CHECK_RDVNO(rdvno);
CHECK_PAR(cmsgsz >= 0);
CHECK_INTSK();
porcb = get_porcb(porid);
caltcb = get_tcb(get_tskid_rdvno(rdvno));
BEGIN_CRITICAL_SECTION;
if ( porcb->porid == 0 ) {
ercd = E_NOEXS;
goto error_exit;
}
#if CHK_PAR
if ( cmsgsz > porcb->maxcmsz ) {
ercd = E_PAR;
goto error_exit;
}
#endif
if ( (caltcb->state & TS_WAIT) == 0
|| caltcb->wspec != &wspec_rdv
|| rdvno != caltcb->winfo.rdv.rdvno ) {
ercd = E_OBJ;
goto error_exit;
}
if ( porcb->maxrmsz > caltcb->winfo.rdv.maxrmsz ) {
ercd = E_OBJ;
goto error_exit;
}
#if CHK_PAR
if ( cmsgsz > caltcb->winfo.rdv.maxrmsz ) {
ercd = E_PAR;
goto error_exit;
}
#endif
/* Search accept wait task */
queue = porcb->accept_queue.next;
while ( queue != &porcb->accept_queue ) {
tcb = (TCB*)queue;
queue = queue->next;
if ( (calptn & tcb->winfo.acp.acpptn) == 0 ) {
continue;
}
/* Check rendezvous accept wait disable */
if ( is_diswai((GCB*)porcb, caltcb, TTW_CAL) ) {
wait_release_ng(caltcb, E_DISWAI);
ercd = E_DISWAI;
goto error_exit;
}
/* Send message */
new_rdvno = gen_rdvno(caltcb);
if ( cmsgsz > 0 ) {
memcpy(tcb->winfo.acp.msg, msg, (UINT)cmsgsz);
}
*tcb->winfo.acp.p_rdvno = new_rdvno;
*tcb->winfo.acp.p_cmsgsz = cmsgsz;
wait_release_ok(tcb);
/* Check rendezvous end wait disable */
if ( is_diswai((GCB*)porcb, caltcb, TTW_RDV) ) {
wait_release_ng(caltcb, E_DISWAI);
ercd = E_DISWAI;
goto error_exit;
}
/* Change rendezvous end wait of the other task */
caltcb->winfo.rdv.rdvno = new_rdvno;
caltcb->winfo.rdv.msg = caltcb->winfo.cal.msg;
caltcb->winfo.rdv.maxrmsz = porcb->maxrmsz;
caltcb->winfo.rdv.p_rmsgsz = caltcb->winfo.cal.p_rmsgsz;
caltcb->nodiswai = ( (porcb->poratr & TA_NODISWAI) != 0 )? TRUE: FALSE;
goto error_exit;
}
/* Check rendezvous accept wait disable */
if ( is_diswai((GCB*)porcb, caltcb, TTW_CAL) ) {
wait_release_ng(caltcb, E_DISWAI);
ercd = E_DISWAI;
goto error_exit;
}
/* Change the other task to rendezvous call wait */
caltcb->wspec = ( (porcb->poratr & TA_TPRI) != 0 )?
&wspec_cal_tpri: &wspec_cal_tfifo;
caltcb->wid = porid;
caltcb->winfo.cal.calptn = calptn;
caltcb->winfo.cal.msg = caltcb->winfo.rdv.msg;
caltcb->winfo.cal.cmsgsz = cmsgsz;
caltcb->winfo.cal.p_rmsgsz = caltcb->winfo.rdv.p_rmsgsz;
caltcb->nodiswai = ( (porcb->poratr & TA_NODISWAI) != 0 )? TRUE: FALSE;
timer_insert(&caltcb->wtmeb, TMO_FEVR,
(CBACK)wait_release_tmout, caltcb);
if ( (porcb->poratr & TA_TPRI) != 0 ) {
queue_insert_tpri(caltcb, &porcb->call_queue);
} else {
QueInsert(&caltcb->tskque, &porcb->call_queue);
}
if ( cmsgsz > 0 ) {
memcpy(caltcb->winfo.cal.msg, msg, (UINT)cmsgsz);
}
error_exit:
END_CRITICAL_SECTION;
return ercd;
}
SYSCALL INT _tk_acp_por_u( ID porid, UINT acpptn, RNO *p_rdvno, void *msg, TMO_U tmout )
{
PORCB *porcb;
TCB *tcb;
QUEUE *queue;
RNO rdvno;
INT cmsgsz;
ER ercd = E_OK;
CHECK_PORID(porid);
CHECK_PAR(acpptn != 0);
CHECK_TMOUT(tmout);
CHECK_DISPATCH();
porcb = get_porcb(porid);
BEGIN_CRITICAL_SECTION;
if ( porcb->porid == 0 ) {
ercd = E_NOEXS;
goto error_exit;
}
/* Search call wait task */
queue = porcb->call_queue.next;
while ( queue != &porcb->call_queue ) {
tcb = (TCB*)queue;
queue = queue->next;
if ( (acpptn & tcb->winfo.cal.calptn) == 0 ) {
continue;
}
/* Check rendezvous accept wait disable */
if ( is_diswai((GCB*)porcb, ctxtsk, TTW_ACP) ) {
ercd = E_DISWAI;
goto error_exit;
}
/* Receive message */
*p_rdvno = rdvno = gen_rdvno(tcb);
cmsgsz = tcb->winfo.cal.cmsgsz;
if ( cmsgsz > 0 ) {
memcpy(msg, tcb->winfo.cal.msg, (UINT)cmsgsz);
}
/* Check rendezvous end wait disable */
if ( is_diswai((GCB*)porcb, tcb, TTW_RDV) ) {
wait_release_ng(tcb, E_DISWAI);
goto error_exit;
}
wait_cancel(tcb);
/* Make the other task at rendezvous end wait state */
tcb->wspec = &wspec_rdv;
tcb->wid = 0;
tcb->winfo.rdv.rdvno = rdvno;
tcb->winfo.rdv.msg = tcb->winfo.cal.msg;
tcb->winfo.rdv.maxrmsz = porcb->maxrmsz;
tcb->winfo.rdv.p_rmsgsz = tcb->winfo.cal.p_rmsgsz;
timer_insert(&tcb->wtmeb, TMO_FEVR,
(CBACK)wait_release_tmout, tcb);
QueInit(&tcb->tskque);
goto error_exit;
}
/* Check rendezvous accept wait disable */
if ( is_diswai((GCB*)porcb, ctxtsk, TTW_ACP) ) {
ercd = E_DISWAI;
goto error_exit;
}
ercd = E_TMOUT;
if ( tmout != TMO_POL ) {
/* Ready for rendezvous accept wait */
ctxtsk->wspec = &wspec_acp;
ctxtsk->wid = porid;
ctxtsk->wercd = &ercd;
ctxtsk->winfo.acp.acpptn = acpptn;
ctxtsk->winfo.acp.msg = msg;
ctxtsk->winfo.acp.p_rdvno = p_rdvno;
ctxtsk->winfo.acp.p_cmsgsz = &cmsgsz;
make_wait(tmout, porcb->poratr);
QueInsert(&ctxtsk->tskque, &porcb->accept_queue);
}
error_exit:
END_CRITICAL_SECTION;
return ( ercd < E_OK )? ercd: cmsgsz;
}
SYSCALL INT _tk_cal_por_u( ID porid, UINT calptn, void *msg, INT cmsgsz, TMO_U tmout )
{
PORCB *porcb;
TCB *tcb;
QUEUE *queue;
RNO rdvno;
INT rmsgsz;
ER ercd = E_OK;
CHECK_PORID(porid);
CHECK_PAR(calptn != 0);
CHECK_PAR(cmsgsz >= 0);
CHECK_TMOUT(tmout);
CHECK_DISPATCH();
porcb = get_porcb(porid);
BEGIN_CRITICAL_SECTION;
if ( porcb->porid == 0 ) {
ercd = E_NOEXS;
goto error_exit;
}
#if CHK_PAR
if ( cmsgsz > porcb->maxcmsz ) {
ercd = E_PAR;
goto error_exit;
}
#endif
/* Search accept wait task */
queue = porcb->accept_queue.next;
while ( queue != &porcb->accept_queue ) {
tcb = (TCB*)queue;
queue = queue->next;
if ( (calptn & tcb->winfo.acp.acpptn) == 0 ) {
continue;
}
/* Check rendezvous call wait disable */
if ( is_diswai((GCB*)porcb, ctxtsk, TTW_CAL) ) {
ercd = E_DISWAI;
goto error_exit;
}
/* Send message */
rdvno = gen_rdvno(ctxtsk);
if ( cmsgsz > 0 ) {
memcpy(tcb->winfo.acp.msg, msg, (UINT)cmsgsz);
}
*tcb->winfo.acp.p_rdvno = rdvno;
*tcb->winfo.acp.p_cmsgsz = cmsgsz;
wait_release_ok(tcb);
/* Check rendezvous end wait disable */
if ( is_diswai((GCB*)porcb, ctxtsk, TTW_RDV) ) {
ercd = E_DISWAI;
goto error_exit;
}
/* Ready for rendezvous end wait */
ercd = E_TMOUT;
ctxtsk->wspec = &wspec_rdv;
ctxtsk->wid = 0;
ctxtsk->wercd = &ercd;
ctxtsk->winfo.rdv.rdvno = rdvno;
ctxtsk->winfo.rdv.msg = msg;
ctxtsk->winfo.rdv.maxrmsz = porcb->maxrmsz;
ctxtsk->winfo.rdv.p_rmsgsz = &rmsgsz;
make_wait(TMO_FEVR, porcb->poratr);
QueInit(&ctxtsk->tskque);
goto error_exit;
}
/* Ready for rendezvous call wait */
ctxtsk->wspec = ( (porcb->poratr & TA_TPRI) != 0 )?
&wspec_cal_tpri: &wspec_cal_tfifo;
ctxtsk->wercd = &ercd;
ctxtsk->winfo.cal.calptn = calptn;
ctxtsk->winfo.cal.msg = msg;
ctxtsk->winfo.cal.cmsgsz = cmsgsz;
ctxtsk->winfo.cal.p_rmsgsz = &rmsgsz;
gcb_make_wait_with_diswai((GCB*)porcb, tmout);
error_exit:
END_CRITICAL_SECTION;
return ( ercd < E_OK )? ercd: rmsgsz;
}
SYSCALL ER _tk_loc_mtx_u( ID mtxid, TMO_U tmout )
{
MTXCB *mtxcb;
TCB *mtxtsk;
ATR mtxatr;
ER ercd = E_OK;
CHECK_MTXID(mtxid);
CHECK_TMOUT(tmout);
CHECK_DISPATCH();
mtxcb = get_mtxcb(mtxid);
BEGIN_CRITICAL_SECTION;
if ( mtxcb->mtxid == 0 ) {
ercd = E_NOEXS;
goto error_exit;
}
if ( mtxcb->mtxtsk == ctxtsk ) {
ercd = E_ILUSE; /* Multiplexed lock */
goto error_exit;
}
mtxatr = mtxcb->mtxatr & TA_CEILING;
if ( mtxatr == TA_CEILING ) {
if ( ctxtsk->bpriority < mtxcb->ceilpri ) {
/* Violation of highest priority limit */
ercd = E_ILUSE;
goto error_exit;
}
}
/* Check wait disable */
if ( is_diswai((GCB*)mtxcb, ctxtsk, TTW_MTX) ) {
ercd = E_DISWAI;
goto error_exit;
}
mtxtsk = mtxcb->mtxtsk;
if ( mtxtsk == NULL ) {
/* Get lock */
mtxcb->mtxtsk = ctxtsk;
mtxcb->mtxlist = ctxtsk->mtxlist;
ctxtsk->mtxlist = mtxcb;
if ( mtxatr == TA_CEILING ) {
if ( ctxtsk->priority > mtxcb->ceilpri ) {
/* Raise its own task to the highest
priority limit */
change_task_priority(ctxtsk, mtxcb->ceilpri);
}
}
} else {
ercd = E_TMOUT;
if ( tmout == TMO_POL ) {
goto error_exit;
}
if ( mtxatr == TA_INHERIT ) {
if ( mtxtsk->priority > ctxtsk->priority ) {
/* Raise the priority of task during
locking to the same priority as its
own task */
change_task_priority(mtxtsk, ctxtsk->priority);
}
}
/* Ready for wait */
ctxtsk->wspec = ( mtxatr == TA_TFIFO )? &wspec_mtx_tfifo:
( mtxatr == TA_INHERIT )? &wspec_mtx_inherit:
&wspec_mtx_tpri;
ctxtsk->wercd = &ercd;
ctxtsk->wid = mtxcb->mtxid;
make_wait(tmout, mtxcb->mtxatr);
if ( mtxatr == TA_TFIFO ) {
QueInsert(&ctxtsk->tskque, &mtxcb->wait_queue);
} else {
queue_insert_tpri(ctxtsk, &mtxcb->wait_queue);
}
}
error_exit:
END_CRITICAL_SECTION;
return ercd;
}