pthread_barrier.h

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/*
 * Copyright (C) 2014 Freie Universität Berlin
 *
 * This file is subject to the terms and conditions of the GNU Lesser
 * General Public License v2.1. See the file LICENSE in the top level
 * directory for more details.
 */
 
#pragma once

 
#include "mutex.h"
 
#ifdef __cplusplus
extern "C" {
#endif

#define PTHREAD_PROCESS_SHARED (0)
#define PTHREAD_PROCESS_PRIVATE (1)

typedef struct pthread_barrier_waiting_node
{
    struct pthread_barrier_waiting_node *next; 
    kernel_pid_t pid; 
    volatile int cont; 
} pthread_barrier_waiting_node_t;

typedef struct
{
    struct pthread_barrier_waiting_node *next; 
    mutex_t mutex; 
    volatile int count; 
} pthread_barrier_t;

typedef struct
{
    int pshared; 
} pthread_barrierattr_t;

int pthread_barrier_init(pthread_barrier_t *barrier,
                         const pthread_barrierattr_t *attr,
                         unsigned int count);

int pthread_barrier_destroy(pthread_barrier_t *barrier);

int pthread_barrier_wait(pthread_barrier_t *barrier);

int pthread_barrierattr_init(pthread_barrierattr_t *attr);

int pthread_barrierattr_destroy(pthread_barrierattr_t *attr);

int pthread_barrierattr_getpshared(const pthread_barrierattr_t *attr, int *pshared);

int pthread_barrierattr_setpshared(pthread_barrierattr_t *attr, int pshared);
 
#ifdef __cplusplus
}
#endif