/*-
 * Copyright (c) 2002-2018 The UbixOS Project.
 * All rights reserved.
 *
 * This was developed by Christopher W. Olsen for the UbixOS Project.
 *
 * Redistribution and use in source and binary forms, with or without modification, are permitted
 * provided that the following conditions are met:
 *
 * 1) Redistributions of source code must retain the above copyright notice, this list of
 *    conditions, the following disclaimer and the list of authors.
 * 2) Redistributions in binary form must reproduce the above copyright notice, this list of
 *    conditions, the following disclaimer and the list of authors in the documentation and/or
 *    other materials provided with the distribution.
 * 3) Neither the name of the UbixOS Project nor the names of its contributors may be used to
 *    endorse or promote products derived from this software without specific prior written
 *    permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED
 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
 * OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#ifndef _UBTHREAD_H
#define _UBTHREAD_H

#include <sys/types.h>
#include <stdatomic.h>
#include <ubixos/sched.h>
#include <ubixos/time.h>

#ifndef ETIMEDOUT
#define ETIMEDOUT -1
#endif

#define LOCKED     1
#define UNLOCKED   0

typedef struct ubthread *ubthread_t;
typedef struct ubthread_cond *ubthread_cond_t;
typedef struct ubthread_mutex *ubthread_mutex_t;

struct ubthread {
    kTask_t *task;
};

struct ubthread_cond {
    int id;
    bool lock;
};

struct ubthread_mutex {
    int id;
    bool lock;
    pidType pid;
};

struct ubthread_list {
    struct ubthread_list *next;
    ubthread_t thread;
};

struct ubthread_cond_list {
    struct ubthread_cond_list *next;
    ubthread_cond_t *cond;
};

struct ubthread_mutex_list {
    struct ubthread_mutex_list *next;
    ubthread_mutex_t *mutex;
};

kTask_t *ubthread_self();
int ubthread_cond_init(ubthread_cond_t *cond, const uInt32 attr);
int ubthread_mutex_init(ubthread_mutex_t *mutex, const uInt32 attr);
int ubthread_cond_destroy(ubthread_cond_t *cond);
int ubthread_mutex_destroy(ubthread_mutex_t *mutex);
int ubthread_create(kTask_t **thread, const uInt32 *attr, void (*tproc)(void), void *arg);
int ubthread_mutex_lock(ubthread_mutex_t *mutex);
int ubthread_mutex_unlock(ubthread_mutex_t *mutex);
int ubthread_cond_timedwait(ubthread_cond_t *cond, ubthread_mutex_t *mutex, const struct timespec *abstime);
int ubthread_cond_wait(ubthread_cond_t *cond, ubthread_mutex_t *mutex);
int ubthread_cond_signal(ubthread_cond_t *cond);
int ubthread_cond_broadcast(ubthread_cond_t *cond);

#endif