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/**
* @file scheduler.c
*
* @brief Implementation of scheduler_t.
*
*/
/*
* Copyright (C) 2005-2006 Martin Willi
* Copyright (C) 2005 Jan Hutter
* Hochschule fuer Technik Rapperswil
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 2 of the License, or (at your
* option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>.
*
* 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.
*/
#include <stdlib.h>
#include <pthread.h>
#include "scheduler.h"
#include <daemon.h>
#include <queues/job_queue.h>
typedef struct private_scheduler_t private_scheduler_t;
/**
* Private data of a scheduler_t object.
*/
struct private_scheduler_t {
/**
* Public part of a scheduler_t object.
*/
scheduler_t public;
/**
* Assigned thread.
*/
pthread_t assigned_thread;
};
/**
* Implementation of private_scheduler_t.get_events.
*/
static void get_events(private_scheduler_t * this)
{
job_t *current_job;
/* cancellation disabled by default */
pthread_setcancelstate(PTHREAD_CANCEL_DISABLE, NULL);
DBG1(DBG_JOB, "scheduler thread running, thread_ID: %06u",
(int)pthread_self());
while (TRUE)
{
DBG2(DBG_JOB, "waiting for next event...");
/* get a job, this block until one is available */
current_job = charon->event_queue->get(charon->event_queue);
/* queue the job in the job queue, workers will eat them */
DBG2(DBG_JOB, "got event, adding job %N to job-queue",
job_type_names, current_job->get_type(current_job));
charon->job_queue->add(charon->job_queue, current_job);
}
}
/**
* Implementation of scheduler_t.destroy.
*/
static void destroy(private_scheduler_t *this)
{
pthread_cancel(this->assigned_thread);
pthread_join(this->assigned_thread, NULL);
free(this);
}
/*
* Described in header.
*/
scheduler_t * scheduler_create()
{
private_scheduler_t *this = malloc_thing(private_scheduler_t);
this->public.destroy = (void(*)(scheduler_t*)) destroy;
if (pthread_create(&(this->assigned_thread), NULL, (void*(*)(void*))get_events, this) != 0)
{
/* thread could not be created */
free(this);
charon->kill(charon, "unable to create scheduler thread");
}
return &(this->public);
}
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