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/* Copyright (C) 2007-2013 Open Information Security Foundation
*
* You can copy, redistribute or modify this Program under the terms of
* the GNU General Public License version 2 as published by the Free
* Software Foundation.
*
* This program 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
* version 2 along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
* 02110-1301, USA.
*/
/**
* \file
*
* \author Victor Julien <victor@inliniac.net>
*
* Simple queue handler
*/
#include "suricata.h"
#include "packet-queue.h"
#include "decode.h"
#include "threads.h"
#include "threadvars.h"
#include "tm-queuehandlers.h"
#include "tmqh-simple.h"
Packet *TmqhInputSimple(ThreadVars *t);
void TmqhOutputSimple(ThreadVars *t, Packet *p);
void TmqhInputSimpleShutdownHandler(ThreadVars *);
void TmqhSimpleRegister (void)
{
tmqh_table[TMQH_SIMPLE].name = "simple";
tmqh_table[TMQH_SIMPLE].InHandler = TmqhInputSimple;
tmqh_table[TMQH_SIMPLE].InShutdownHandler = TmqhInputSimpleShutdownHandler;
tmqh_table[TMQH_SIMPLE].OutHandler = TmqhOutputSimple;
}
Packet *TmqhInputSimple(ThreadVars *t)
{
PacketQueue *q = t->inq->pq;
StatsSyncCountersIfSignalled(t);
SCMutexLock(&q->mutex_q);
if (q->len == 0) {
/* if we have no packets in queue, wait... */
SCCondWait(&q->cond_q, &q->mutex_q);
}
if (q->len > 0) {
Packet *p = PacketDequeue(q);
SCMutexUnlock(&q->mutex_q);
return p;
} else {
/* return NULL if we have no pkt. Should only happen on signals. */
SCMutexUnlock(&q->mutex_q);
return NULL;
}
}
void TmqhInputSimpleShutdownHandler(ThreadVars *tv)
{
int i;
if (tv == NULL || tv->inq == NULL) {
return;
}
for (i = 0; i < (tv->inq->reader_cnt + tv->inq->writer_cnt); i++) {
SCMutexLock(&tv->inq->pq->mutex_q);
SCCondSignal(&tv->inq->pq->cond_q);
SCMutexUnlock(&tv->inq->pq->mutex_q);
}
}
void TmqhOutputSimple(ThreadVars *t, Packet *p)
{
SCLogDebug("Packet %p, p->root %p, alloced %s", p, p->root, BOOL2STR(p->pool == NULL));
PacketQueue *q = t->outq->pq;
SCMutexLock(&q->mutex_q);
PacketEnqueue(q, p);
SCCondSignal(&q->cond_q);
SCMutexUnlock(&q->mutex_q);
}
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