pipe.h

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/*
 * SPDX-FileCopyrightText: 2014 René Kijewski <rene.kijewski@fu-berlin.de>
 * SPDX-License-Identifier: LGPL-2.1-or-later
 */
 
#pragma once

 
#include <sys/types.h>
 
#include "mutex.h"
#include "ringbuffer.h"
#include "thread.h"
 
#ifdef __cplusplus
extern "C" {
#endif
 
#ifndef PIPE_BUF
#   define PIPE_BUF (128) 
#endif

typedef struct riot_pipe {
    ringbuffer_t *rb;               
    thread_t *read_blocked;         
    thread_t *write_blocked;        
    void (*free)(void *);           
    } pipe_t;

void pipe_init(pipe_t *pipe, ringbuffer_t *rb, void (*free)(void *));

ssize_t pipe_read(pipe_t *pipe, void *buf, size_t n);

ssize_t pipe_write(pipe_t *pipe, const void *buf, size_t n);

pipe_t *pipe_malloc(unsigned size);

void pipe_free(pipe_t *rp);
 
#ifdef __cplusplus
}
#endif