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/* Quagga Pthreads support -- header
* Copyright (C) 2009 Chris Hall (GMCH), Highwayman
*
* This file is part of GNU Zebra.
*
* GNU Zebra is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published
* by the Free Software Foundation; either version 2, or (at your
* option) any later version.
*
* GNU Zebra is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with GNU Zebra; see the file COPYING. If not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
/* This MUST come first... otherwise we don't get __USE_UNIX98, which is */
/* essential if glibc is to allow pthread_mutexattr_settype() to be used. */
#include "config.h"
#include <signal.h>
#include <string.h>
#include "qpnexus.h"
#include "memory.h"
/* prototypes */
static void* qpn_start(void* arg);
/*==============================================================================
* Quagga Nexus Interface -- qpt_xxxx
*
*/
/* Initialise a nexus -- allocating it if required.
*
* Returns the qtn_nexus.
*/
qpn_nexus
qpn_init_new(qpn_nexus qpn)
{
if (qpn == NULL)
qpn = XCALLOC(MTYPE_QPN_NEXUS, sizeof(struct qpn_nexus)) ;
else
memset(qpn, 0, sizeof(struct qpn_nexus)) ;
qpn->selection = qps_selection_init_new(qpn->selection);
qpn->pile = qtimer_pile_init_new(qpn->pile);
/* TODO mqueue initialisation */
return qpn;
}
void
qpn_free(qpn_nexus qpn)
{
/* timers and the pile */
qtimer qtr;
while ((qtr = qtimer_pile_ream(qpn->pile, 1)))
{
qtimer_free(qtr);
}
/* TODO: free qtn->selection */
/* TODO: free qtn->queue */
XFREE(MTYPE_QPN_NEXUS, qpn) ;
}
/* Create and execute the qpthread */
void
qpn_exec(qpn_nexus qpn)
{
qpn->thread_id = qpt_thread_create(qpn_start, qpn, NULL) ;
}
static void*
qpn_start(void* arg)
{
qpn_nexus qpn = arg;
int actions;
while (!qpn->terminate)
{
qtime_mono_t now = qt_get_monotonic();
/* process timers */
while (qtimer_pile_dispatch_next(qpn->pile, now))
{
}
/* block for some input, output or timeout */
actions = qps_pselect( qpn->selection,
qtimer_pile_top_time(qpn->pile, now + QTIME(MAX_PSELECT_TIMOUT)) );
/* process I/O actions */
while (actions)
{
actions = qps_dispatch_next(qpn->selection) ;
}
/* TODO process message queue */
}
qpn_free(qpn);
return NULL;
}
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