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/* Copyright (C) 2007-2010 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"
#define TMQ_MAX_QUEUES 256
static uint16_t tmq_id = 0;
static Tmq tmqs[TMQ_MAX_QUEUES];
Tmq* TmqAlloc(void)
{
Tmq *q = SCMalloc(sizeof(Tmq));
if (unlikely(q == NULL))
goto error;
memset(q, 0, sizeof(Tmq));
return q;
error:
return NULL;
}
Tmq* TmqCreateQueue(char *name)
{
if (tmq_id >= TMQ_MAX_QUEUES)
goto error;
Tmq *q = &tmqs[tmq_id];
q->name = name;
q->id = tmq_id++;
/* for cuda purposes */
q->q_type = 0;
SCLogDebug("created queue \'%s\', %p", name, q);
return q;
error:
SCLogError(SC_ERR_THREAD_QUEUE, "too many thread queues %u, max is %u", tmq_id+1, TMQ_MAX_QUEUES);
return NULL;
}
Tmq* TmqGetQueueByName(char *name)
{
uint16_t i;
for (i = 0; i < tmq_id; i++) {
if (strcmp(tmqs[i].name, name) == 0)
return &tmqs[i];
}
return NULL;
}
void TmqDebugList(void)
{
uint16_t i = 0;
for (i = 0; i < tmq_id; i++) {
/* get a lock accessing the len */
SCMutexLock(&trans_q[tmqs[i].id].mutex_q);
printf("TmqDebugList: id %" PRIu32 ", name \'%s\', len %" PRIu32 "\n", tmqs[i].id, tmqs[i].name, trans_q[tmqs[i].id].len);
SCMutexUnlock(&trans_q[tmqs[i].id].mutex_q);
}
}
void TmqResetQueues(void)
{
memset(&tmqs, 0x00, sizeof(tmqs));
tmq_id = 0;
}
/**
* \brief Checks if all the queues allocated so far have at least one reader
* and writer.
*/
void TmValidateQueueState(void)
{
int i = 0;
char err = FALSE;
for (i = 0; i < tmq_id; i++) {
SCMutexLock(&trans_q[tmqs[i].id].mutex_q);
if (tmqs[i].reader_cnt == 0) {
SCLogError(SC_ERR_THREAD_QUEUE, "queue \"%s\" doesn't have a reader (id %d, max %u)", tmqs[i].name, i, tmq_id);
err = TRUE;
} else if (tmqs[i].writer_cnt == 0) {
SCLogError(SC_ERR_THREAD_QUEUE, "queue \"%s\" doesn't have a writer (id %d, max %u)", tmqs[i].name, i, tmq_id);
err = TRUE;
}
SCMutexUnlock(&trans_q[tmqs[i].id].mutex_q);
if (err == TRUE)
goto error;
}
return;
error:
SCLogError(SC_ERR_FATAL, "fatal error during threading setup");
exit(EXIT_FAILURE);
}
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