- return value cleanup
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@@ -1,7 +1,7 @@
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/**
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* @file event_queue.c
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*
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* @brief Event-Queue based on class linked_list_t
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* @brief Implementation of event_queue_t
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*
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*/
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@@ -54,19 +54,17 @@ struct event_t{
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* @brief Destroys a event_t object.
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*
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* @param event_t calling object
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* @returns always SUCCESS
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*/
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status_t (*destroy) (event_t *event);
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void (*destroy) (event_t *event);
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};
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/**
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* @brief implements function destroy of event_t
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* implements event_t.destroy
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*/
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static status_t event_destroy(event_t *event)
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static void event_destroy(event_t *event)
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{
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allocator_free(event);
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return SUCCESS;
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}
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/**
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@@ -75,17 +73,11 @@ static status_t event_destroy(event_t *event)
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* @param time absolute time to fire the event
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* @param job job to add to job-queue at specific time
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*
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* @returns
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* - created event_t object
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* - NULL if memory allocation failed
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* @returns created event_t object
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*/
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static event_t *event_create(timeval_t time, job_t *job)
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{
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event_t *this = allocator_alloc_thing(event_t);
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if (this == NULL)
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{
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return this;
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}
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this->destroy = event_destroy;
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this->time = time;
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@@ -149,8 +141,7 @@ static long time_difference(struct timeval *end_time, struct timeval *start_time
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/**
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* Implements function get_count of event_queue_t.
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* See #event_queue_s.get_count for description.
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* Implements event_queue_t.get_count
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*/
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static int get_count (private_event_queue_t *this)
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{
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@@ -162,14 +153,14 @@ static int get_count (private_event_queue_t *this)
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}
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/**
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* Implements function get of event_queue_t.
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* See #event_queue_s.get for description.
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* Implements event_queue_t.get
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*/
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static status_t get(private_event_queue_t *this, job_t **job)
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static job_t *get(private_event_queue_t *this)
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{
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timespec_t timeout;
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timeval_t current_time;
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event_t * next_event;
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job_t *job;
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int oldstate;
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pthread_mutex_lock(&(this->mutex));
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@@ -205,7 +196,7 @@ static status_t get(private_event_queue_t *this, job_t **job)
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/* event available */
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this->list->remove_first(this->list,(void **) &next_event);
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*job = next_event->job;
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job = next_event->job;
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next_event->destroy(next_event);
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break;
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@@ -216,23 +207,19 @@ static status_t get(private_event_queue_t *this, job_t **job)
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pthread_mutex_unlock(&(this->mutex));
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return SUCCESS;
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return job;
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}
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/**
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* Implements function add_absolute of event_queue_t.
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* See #event_queue_s.add_absolute for description.
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*/
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static status_t add_absolute(private_event_queue_t *this, job_t *job, timeval_t time)
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static void add_absolute(private_event_queue_t *this, job_t *job, timeval_t time)
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{
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event_t *event = event_create(time,job);
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event_t *current_event;
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status_t status;
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if (event == NULL)
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{
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return FAILED;
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}
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pthread_mutex_lock(&(this->mutex));
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/* while just used to break out */
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@@ -240,7 +227,7 @@ static status_t add_absolute(private_event_queue_t *this, job_t *job, timeval_t
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{
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if (this->list->get_count(this->list) == 0)
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{
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status = this->list->insert_first(this->list,event);
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this->list->insert_first(this->list,event);
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break;
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}
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@@ -250,7 +237,7 @@ static status_t add_absolute(private_event_queue_t *this, job_t *job, timeval_t
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if (time_difference(&(event->time), &(current_event->time)) >= 0)
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{
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/* my event has to be fired after the last event in list */
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status = this->list->insert_last(this->list,event);
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this->list->insert_last(this->list,event);
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break;
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}
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@@ -260,18 +247,13 @@ static status_t add_absolute(private_event_queue_t *this, job_t *job, timeval_t
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if (time_difference(&(event->time), &(current_event->time)) < 0)
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{
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/* my event has to be fired before the first event in list */
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status = this->list->insert_first(this->list,event);
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this->list->insert_first(this->list,event);
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break;
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}
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iterator_t * iterator;
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status = this->list->create_iterator(this->list,&iterator,TRUE);
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if (status != SUCCESS)
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{
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break;
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}
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this->list->create_iterator(this->list,&iterator,TRUE);
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iterator->has_next(iterator);
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/* first element has not to be checked (already done) */
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@@ -283,7 +265,7 @@ static status_t add_absolute(private_event_queue_t *this, job_t *job, timeval_t
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if (time_difference(&(event->time), &(current_event->time)) <= 0)
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{
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/* my event has to be fired before the current event in list */
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status = iterator->insert_before(iterator,event);
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iterator->insert_before(iterator,event);
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break;
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}
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}
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@@ -293,19 +275,12 @@ static status_t add_absolute(private_event_queue_t *this, job_t *job, timeval_t
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pthread_cond_signal( &(this->condvar));
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pthread_mutex_unlock(&(this->mutex));
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if (status != SUCCESS)
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{
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event->destroy(event);
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}
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return status;
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}
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/**
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* Implements function add_relative of event_queue_t.
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* See #event_queue_s.add_relative for description.
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* Implements event_queue_t.add_relative.
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*/
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static status_t add_relative(event_queue_t *this, job_t *job, u_int32_t ms)
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static void add_relative(event_queue_t *this, job_t *job, u_int32_t ms)
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{
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timeval_t current_time;
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timeval_t time;
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@@ -316,15 +291,14 @@ static status_t add_relative(event_queue_t *this, job_t *job, u_int32_t ms)
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time.tv_usec = ((current_time.tv_usec + micros) % 1000000);
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time.tv_sec = current_time.tv_sec + ((current_time.tv_usec + micros)/ 1000000);
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return this->add_absolute(this, job, time);
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this->add_absolute(this, job, time);
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}
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/**
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* Implements function destroy of event_queue_t.
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* See #event_queue_s.destroy for description.
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* Implements event_queue_t.destroy.
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*/
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static status_t event_queue_destroy(private_event_queue_t *this)
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static void event_queue_destroy(private_event_queue_t *this)
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{
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while (this->list->get_count(this->list) > 0)
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{
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@@ -345,7 +319,6 @@ static status_t event_queue_destroy(private_event_queue_t *this)
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pthread_cond_destroy(&(this->condvar));
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allocator_free(this);
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return SUCCESS;
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}
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/*
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@@ -353,26 +326,15 @@ static status_t event_queue_destroy(private_event_queue_t *this)
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*/
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event_queue_t *event_queue_create()
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{
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linked_list_t *linked_list = linked_list_create();
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if (linked_list == NULL)
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{
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return NULL;
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}
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private_event_queue_t *this = allocator_alloc_thing(private_event_queue_t);
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if (this == NULL)
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{
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linked_list->destroy(linked_list);
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return NULL;
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}
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this->public.get_count = (int (*) (event_queue_t *event_queue)) get_count;
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this->public.get = (status_t (*) (event_queue_t *event_queue, job_t **job)) get;
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this->public.add_absolute = (status_t (*) (event_queue_t *event_queue, job_t *job, timeval_t time)) add_absolute;
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this->public.add_relative = (status_t (*) (event_queue_t *event_queue, job_t *job, u_int32_t ms)) add_relative;
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this->public.destroy = (status_t (*) (event_queue_t *event_queue)) event_queue_destroy;
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this->public.get = (job_t *(*) (event_queue_t *event_queue)) get;
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this->public.add_absolute = (void (*) (event_queue_t *event_queue, job_t *job, timeval_t time)) add_absolute;
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this->public.add_relative = (void (*) (event_queue_t *event_queue, job_t *job, u_int32_t ms)) add_relative;
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this->public.destroy = (void (*) (event_queue_t *event_queue)) event_queue_destroy;
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this->list = linked_list;
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this->list = linked_list_create();;
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pthread_mutex_init(&(this->mutex), NULL);
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pthread_cond_init(&(this->condvar), NULL);
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