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fa818d423b5ce74fa78ed01195adab80dbaa4277
openairinterface5g/common/utils/itti/timer.c
T
winckel fa818d423b Added an action parameter to be performed when assert fails in AssertError. 
Added a return status to itti_free.

git-svn-id: http://svn.eurecom.fr/openair4G/trunk@4779 818b1a75-f10b-46b9-bf7c-635c3b92a50f
2013-12-20 09:14:19 +00:00

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C
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/*******************************************************************************
Eurecom OpenAirInterface
Copyright(c) 1999 - 2012 Eurecom
This program is free software; you can redistribute it and/or modify it
under the terms and conditions of the GNU General Public License,
version 2, as published by the Free Software Foundation.
This program is distributed in the hope 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
this program; if not, write to the Free Software Foundation, Inc.,
51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
The full GNU General Public License is included in this distribution in
the file called "COPYING".
Contact Information
Openair Admin: openair_admin@eurecom.fr
Openair Tech : openair_tech@eurecom.fr
Forums : http://forums.eurecom.fr/openairinterface
Address : EURECOM, Campus SophiaTech, 450 Route des Chappes
06410 Biot FRANCE
*******************************************************************************/
#include <pthread.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <string.h>
#include <signal.h>
#include <time.h>
#include <errno.h>
#include "assertions.h"
#include "intertask_interface.h"
#include "timer.h"
#include "log.h"
#include "queue.h"
#if defined (LOG_D) && defined (LOG_E)
# define TMR_DEBUG(x, args...) LOG_D(TMR, x, ##args)
# define TMR_ERROR(x, args...) LOG_E(TMR, x, ##args)
#endif
#ifndef TMR_DEBUG
# define TMR_DEBUG(x, args...) do { fprintf(stdout, "[TMR][D]"x, ##args); } while(0)
#endif
#ifndef TMR_ERROR
# define TMR_ERROR(x, args...) do { fprintf(stdout, "[TMR][E]"x, ##args); } while(0)
#endif
int timer_handle_signal(siginfo_t *info);
struct timer_elm_s {
task_id_t task_id; ///< Task ID which has requested the timer
int32_t instance; ///< Instance of the task which has requested the timer
timer_t timer; ///< Unique timer id
timer_type_t type; ///< Timer type
void *timer_arg; ///< Optional argument that will be passed when timer expires
STAILQ_ENTRY(timer_elm_s) entries; ///< Pointer to next element
};
typedef struct timer_desc_s {
STAILQ_HEAD(timer_list_head, timer_elm_s) timer_queue;
pthread_mutex_t timer_list_mutex;
struct timespec timeout;
} timer_desc_t;
static timer_desc_t timer_desc;
#define TIMER_SEARCH(vAR, tIMERfIELD, tIMERvALUE, tIMERqUEUE) \
do { \
STAILQ_FOREACH(vAR, tIMERqUEUE, entries) { \
if (((vAR)->tIMERfIELD == tIMERvALUE)) \
break; \
} \
} while(0)
int timer_handle_signal(siginfo_t *info)
{
struct timer_elm_s *timer_p;
MessageDef *message_p;
timer_has_expired_t *timer_expired_p;
task_id_t task_id;
int32_t instance;
/* Get back pointer to timer list element */
timer_p = (struct timer_elm_s *)info->si_ptr;
TMR_DEBUG("Timer with id 0x%lx has expired\n", (long)timer_p->timer);
task_id = timer_p->task_id;
instance = timer_p->instance;
message_p = itti_alloc_new_message(TASK_TIMER, TIMER_HAS_EXPIRED);
timer_expired_p = &message_p->ittiMsg.timer_has_expired;
timer_expired_p->timer_id = (long)timer_p->timer;
timer_expired_p->arg = timer_p->timer_arg;
/* Timer is a one shot timer, remove it */
if (timer_p->type == TIMER_ONE_SHOT) {
// if (timer_delete(timer_p->timer) < 0) {
// TMR_DEBUG("Failed to delete timer 0x%lx\n", (long)timer_p->timer);
// }
// TMR_DEBUG("Removed timer 0x%lx\n", (long)timer_p->timer);
// pthread_mutex_lock(&timer_desc.timer_list_mutex);
// STAILQ_REMOVE(&timer_desc.timer_queue, timer_p, timer_elm_s, entries);
// pthread_mutex_unlock(&timer_desc.timer_list_mutex);
// free(timer_p);
// timer_p = NULL;
if (timer_remove((long)timer_p->timer) != 0) {
TMR_DEBUG("Failed to delete timer 0x%lx\n", (long)timer_p->timer);
}
}
/* Notify task of timer expiry */
if (itti_send_msg_to_task(task_id, instance, message_p) < 0) {
TMR_DEBUG("Failed to send msg TIMER_HAS_EXPIRED to task %u\n", task_id);
free(message_p);
return -1;
}
return 0;
}
int timer_setup(
uint32_t interval_sec,
uint32_t interval_us,
task_id_t task_id,
int32_t instance,
timer_type_t type,
void *timer_arg,
long *timer_id)
{
struct sigevent se;
struct itimerspec its;
struct timer_elm_s *timer_p;
timer_t timer;
if (timer_id == NULL) {
return -1;
}
AssertFatal (type < TIMER_TYPE_MAX, "Invalid timer type (%d/%d)!\n", type, TIMER_TYPE_MAX);
/* Allocate new timer list element */
timer_p = malloc(sizeof(struct timer_elm_s));
if (timer_p == NULL) {
TMR_ERROR("Failed to create new timer element\n");
return -1;
}
memset(&timer, 0, sizeof(timer_t));
memset(&se, 0, sizeof(struct sigevent));
timer_p->task_id = task_id;
timer_p->instance = instance;
timer_p->type = type;
timer_p->timer_arg = timer_arg;
/* Setting up alarm */
/* Set and enable alarm */
se.sigev_notify = SIGEV_SIGNAL;
se.sigev_signo = SIGTIMER;
se.sigev_value.sival_ptr = timer_p;
/* At the timer creation, the timer structure will be filled in with timer_id,
* which is unique for this process. This id is allocated by kernel and the
* value might be used to distinguish timers.
*/
if (timer_create(CLOCK_REALTIME, &se, &timer) < 0) {
TMR_ERROR("Failed to create timer: (%s:%d)\n", strerror(errno), errno);
free(timer_p);
return -1;
}
/* Fill in the first expiration value. */
its.it_value.tv_sec = interval_sec;
its.it_value.tv_nsec = interval_us * 1000;
if (type == TIMER_PERIODIC) {
/* Asked for periodic timer. We set the interval time */
its.it_interval.tv_sec = interval_sec;
its.it_interval.tv_nsec = interval_us * 1000;
} else {
/* Asked for one-shot timer. Do not set the interval field */
its.it_interval.tv_sec = 0;
its.it_interval.tv_nsec = 0;
}
timer_settime(timer, 0, &its, NULL);
/* Simply set the timer_id argument. so it can be used by caller */
*timer_id = (long)timer;
TMR_DEBUG("Requesting new %s timer with id 0x%lx that expires within "
"%d sec and %d usec\n",
type == TIMER_PERIODIC ? "periodic" : "single shot",
*timer_id, interval_sec, interval_us);
timer_p->timer = timer;
/* Lock the queue and insert the timer at the tail */
pthread_mutex_lock(&timer_desc.timer_list_mutex);
STAILQ_INSERT_TAIL(&timer_desc.timer_queue, timer_p, entries);
pthread_mutex_unlock(&timer_desc.timer_list_mutex);
return 0;
}
int timer_remove(long timer_id)
{
int rc = 0;
struct timer_elm_s *timer_p;
TMR_DEBUG("Removing timer 0x%lx\n", timer_id);
pthread_mutex_lock(&timer_desc.timer_list_mutex);
TIMER_SEARCH(timer_p, timer, ((timer_t)timer_id), &timer_desc.timer_queue);
/* We didn't find the timer in list */
if (timer_p == NULL) {
pthread_mutex_unlock(&timer_desc.timer_list_mutex);
TMR_ERROR("Didn't find timer 0x%lx in list\n", (long)timer_p->timer);
return -1;
}
STAILQ_REMOVE(&timer_desc.timer_queue, timer_p, timer_elm_s, entries);
pthread_mutex_unlock(&timer_desc.timer_list_mutex);
if (timer_delete(timer_p->timer) < 0) {
TMR_ERROR("Failed to delete timer 0x%lx\n", (long)timer_p->timer);
rc = -1;
}
free(timer_p);
timer_p = NULL;
return rc;
}
int timer_init(void)
{
TMR_DEBUG("Initializing TIMER task interface\n");
memset(&timer_desc, 0, sizeof(timer_desc_t));
STAILQ_INIT(&timer_desc.timer_queue);
pthread_mutex_init(&timer_desc.timer_list_mutex, NULL);
TMR_DEBUG("Initializing TIMER task interface: DONE\n");
return 0;
}
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