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/*
* Ouroboros - Copyright (C) 2016 - 2020
*
* The IPC Resource Manager - Flows
*
* Dimitri Staessens <dimitri.staessens@ugent.be>
* Sander Vrijders <sander.vrijders@ugent.be>
*
* This program is free software; you can redistribute it and/or modify
* it 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
* along with this program; if not, write to the Free Software
* Foundation, Inc., http://www.fsf.org/about/contact/.
*/
#ifndef OUROBOROS_IRMD_IRM_FLOW_H
#define OUROBOROS_IRMD_IRM_FLOW_H
#include <ouroboros/list.h>
#include <ouroboros/qos.h>
#include <ouroboros/shm_rbuff.h>
#include <sys/types.h>
#include <pthread.h>
#include <time.h>
enum flow_state {
FLOW_NULL = 0,
FLOW_ALLOC_PENDING,
FLOW_ALLOCATED,
FLOW_DEALLOC_PENDING,
FLOW_DESTROY
};
struct irm_flow {
struct list_head next;
int flow_id;
pid_t n_pid;
pid_t n_1_pid;
qosspec_t qs;
void * data;
size_t len;
struct shm_rbuff * n_rb;
struct shm_rbuff * n_1_rb;
struct timespec t0;
enum flow_state state;
pthread_cond_t state_cond;
pthread_mutex_t state_lock;
};
struct irm_flow * irm_flow_create(pid_t n_pid,
pid_t n_1_pid,
int flow_id,
qosspec_t qs);
void irm_flow_destroy(struct irm_flow * f);
enum flow_state irm_flow_get_state(struct irm_flow * f);
void irm_flow_set_state(struct irm_flow * f,
enum flow_state state);
int irm_flow_wait_state(struct irm_flow * f,
enum flow_state state,
struct timespec * timeo);
#endif /* OUROBOROS_IRMD_IRM_FLOW_H */
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