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openairinterface5g/common/utils/itti/timer.c
T
Xenofon Foukas 93b9b73582 Merge remote-tracking branch 'oai/develop' into oai-integration 
Conflicts:
	cmake_targets/tools/build_helper
	openair1/SCHED/phy_procedures_lte_eNb.c
	openair2/LAYER2/MAC/eNB_scheduler.c
2016-10-18 16:27:56 +03:00

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7.9 KiB
C
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/*
* Licensed to the OpenAirInterface (OAI) Software Alliance under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The OpenAirInterface Software Alliance licenses this file to You under
* the OAI Public License, Version 1.0 (the "License"); you may not use this file
* except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.openairinterface.org/?page_id=698
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*-------------------------------------------------------------------------------
* For more information about the OpenAirInterface (OAI) Software Alliance:
* contact@openairinterface.org
*/
#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;
// LG: To many traces for msc timer:
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;
}
#if defined(ENB_AGENT_SB_IF)
#endif
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", timer_id);
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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