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/* Copyright (C) 2007-2019 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>
*
* Thread module management functions
*/
#include "suricata.h"
#include "threads.h"
#include "tm-queues.h"
#include "util-debug.h"
static TAILQ_HEAD(TmqList_, Tmq_) tmq_list = TAILQ_HEAD_INITIALIZER(tmq_list);
static uint16_t tmq_id = 0;
Tmq *TmqCreateQueue(const char *name)
{
Tmq *q = SCCalloc(1, sizeof(*q));
if (q == NULL)
FatalError("SCCalloc failed");
q->name = SCStrdup(name);
if (q->name == NULL)
FatalError("SCStrdup failed");
q->id = tmq_id++;
q->is_packet_pool = (strcmp(q->name, "packetpool") == 0);
if (!q->is_packet_pool) {
q->pq = PacketQueueAlloc();
if (q->pq == NULL)
FatalError("PacketQueueAlloc failed");
}
TAILQ_INSERT_HEAD(&tmq_list, q, next);
SCLogDebug("created queue \'%s\', %p", name, q);
return q;
}
Tmq *TmqGetQueueByName(const char *name)
{
Tmq *tmq = NULL;
TAILQ_FOREACH(tmq, &tmq_list, next) {
if (strcmp(tmq->name, name) == 0)
return tmq;
}
return NULL;
}
void TmqDebugList(void)
{
Tmq *tmq = NULL;
TAILQ_FOREACH(tmq, &tmq_list, next) {
/* get a lock accessing the len */
SCMutexLock(&tmq->pq->mutex_q);
printf("TmqDebugList: id %" PRIu32 ", name \'%s\', len %" PRIu32 "\n", tmq->id, tmq->name, tmq->pq->len);
SCMutexUnlock(&tmq->pq->mutex_q);
}
}
void TmqResetQueues(void)
{
Tmq *tmq;
while ((tmq = TAILQ_FIRST(&tmq_list))) {
TAILQ_REMOVE(&tmq_list, tmq, next);
if (tmq->name) {
SCFree(tmq->name);
}
if (tmq->pq) {
PacketQueueFree(tmq->pq);
}
SCFree(tmq);
}
tmq_id = 0;
}
/**
* \brief Checks if all the queues allocated so far have at least one reader
* and writer.
*/
void TmValidateQueueState(void)
{
bool err = false;
Tmq *tmq = NULL;
TAILQ_FOREACH(tmq, &tmq_list, next) {
SCMutexLock(&tmq->pq->mutex_q);
if (tmq->reader_cnt == 0) {
SCLogError("queue \"%s\" doesn't have a reader (id %d max %u)", tmq->name, tmq->id,
tmq_id);
err = true;
} else if (tmq->writer_cnt == 0) {
SCLogError("queue \"%s\" doesn't have a writer (id %d, max %u)", tmq->name, tmq->id,
tmq_id);
err = true;
}
SCMutexUnlock(&tmq->pq->mutex_q);
if (err == true)
goto error;
}
return;
error:
FatalError("fatal error during threading setup");
}
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