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/*
* Ouroboros - Copyright (C) 2016 - 2018
*
* The IPC Resource Manager - Registry
*
* 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_REGISTRY_H
#define OUROBOROS_IRMD_REGISTRY_H
#include <ouroboros/hash.h>
#include <ouroboros/ipcp.h>
#include <ouroboros/list.h>
#include <ouroboros/qoscube.h>
#include "proc_table.h"
#include "prog_table.h"
#include <stdint.h>
#include <stdbool.h>
#include <pthread.h>
#include <string.h>
#include <sys/types.h>
#define registry_has_name(r, name) \
(registry_get_entry(r, name) != NULL)
enum reg_name_state {
REG_NAME_NULL = 0,
REG_NAME_IDLE,
REG_NAME_AUTO_ACCEPT,
REG_NAME_AUTO_EXEC,
REG_NAME_FLOW_ACCEPT,
REG_NAME_FLOW_ARRIVED,
REG_NAME_DESTROY
};
/* An entry in the registry */
struct reg_entry {
struct list_head next;
char * name;
/* layers in which this name is registered */
struct list_head layers;
/* Programs that can be instantiated by the irmd */
struct list_head reg_progs;
/* Processes that are listening for this name */
struct list_head reg_pids;
enum reg_name_state state;
pthread_cond_t state_cond;
pthread_mutex_t state_lock;
};
int reg_entry_add_prog(struct reg_entry * e,
struct prog_entry * a);
void reg_entry_del_prog(struct reg_entry * e,
const char * prog);
char * reg_entry_get_prog(struct reg_entry * e);
int reg_entry_add_pid(struct reg_entry * e,
pid_t pid);
void reg_entry_del_pid(struct reg_entry * e,
pid_t pid);
void reg_entry_del_pid_el(struct reg_entry * e,
struct pid_el * a);
pid_t reg_entry_get_pid(struct reg_entry * e);
enum reg_name_state reg_entry_get_state(struct reg_entry * e);
int reg_entry_set_state(struct reg_entry * e,
enum reg_name_state state);
int reg_entry_leave_state(struct reg_entry * e,
enum reg_name_state state,
struct timespec * timeout);
int reg_entry_wait_state(struct reg_entry * e,
enum reg_name_state state,
struct timespec * timeout);
struct reg_entry * registry_add_name(struct list_head * registry,
const char * name);
void registry_del_name(struct list_head * registry,
const char * name);
void registry_del_process(struct list_head * registry,
pid_t pid);
void registry_sanitize_pids(struct list_head * registry);
struct reg_entry * registry_get_entry(struct list_head * registry,
const char * name);
struct reg_entry * registry_get_entry_by_hash(struct list_head * registry,
enum hash_algo algo,
const uint8_t * hash,
size_t len);
void registry_destroy(struct list_head * registry);
#endif /* OUROBOROS_IRMD_REGISTRY_H */
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