dedos_threads.h

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/*
START OF LICENSE STUB
    DeDOS: Declarative Dispersion-Oriented Software
    Copyright (C) 2017 University of Pennsylvania, Georgetown University

    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 3 of the License, or
    (at your option) any later version.

    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, see <http://www.gnu.org/licenses/>.
END OF LICENSE STUB
*/
#ifndef DEDOS_THREADS_H
#define DEDOS_THREADS_H
#include <unistd.h>
#include <pthread.h>
#include <semaphore.h>
#include "message_queue.h"
#include "dfg.h"

struct dedos_thread {
    pthread_t pthread;
    int id;
    enum thread_mode mode;
    struct msg_queue queue;
    sem_t sem;
    pthread_mutex_t exit_lock;
    int exit_signal;
    struct timespec last_metric;
};

struct dedos_thread *get_dedos_thread(int id);

typedef void* (*dedos_thread_init_fn)(struct dedos_thread *thread);

typedef int (*dedos_thread_fn)(struct dedos_thread *thread, void *init_output);

typedef void (*dedos_thread_destroy_fn)(struct dedos_thread *thread, void *init_output);

int start_dedos_thread(dedos_thread_fn thread_fn,
                       dedos_thread_init_fn init_fn,
                       dedos_thread_destroy_fn destroy_fn,
                       enum blocking_mode mode,
                       int id,
                       struct dedos_thread *thread);

int dedos_thread_should_exit(struct dedos_thread *thread);
void dedos_thread_stop(struct dedos_thread *thread);
void dedos_thread_join(struct dedos_thread *thread);
int thread_wait(struct dedos_thread *thread, struct timespec *abs_timeout);

#endif // DEDOS_THREADS_H