hio/stio/lib/stio-pro.h

/*
 * $Id$
 *
    Copyright (c) 2015-2016 Chung, Hyung-Hwan. All rights reserved.

    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 and the following disclaimer.
    2. Redistributions in binary form must reproduce the above copyright
       notice, this list of conditions and the following disclaimer in the
       documentation and/or other materials provided with the distribution.

    THIS SOFTWARE IS PROVIDED BY THE AUTHOR "AS IS" AND ANY EXPRESS OR
    IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WAfRRANTIES
    OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
    IN NO EVENT SHALL THE AUTHOR 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 _STIO_PRO_H_
#define _STIO_PRO_H_

#include <stio.h>

enum stio_dev_pro_type_t
{
	STIO_DEV_PRO_IN,
	STIO_DEV_PRO_OUT,
	STIO_DEV_PRO_ERR,
};
typedef enum stio_dev_pro_type_t stio_dev_pro_type_t;


typedef struct stio_dev_pro_t stio_dev_pro_t;

typedef int (*stio_dev_pro_on_read_t) (stio_dev_pro_t* dev, const void* data, stio_iolen_t len);
typedef int (*stio_dev_pro_on_write_t) (stio_dev_pro_t* dev, void* wrctx);

struct stio_dev_pro_t
{
	STIO_DEV_HEADERS;

	stio_syshnd_t pfd;
	stio_dev_pro_type_t type;

	stio_intptr_t child_pid;

	stio_dev_pro_t* sibling[2];

	stio_dev_pro_on_read_t on_read;
	stio_dev_pro_on_write_t on_write;

	stio_tmridx_t tmridx_connect;
};

enum stio_dev_pro_make_flag_t
{
	STIO_DEV_PRO_WRITEIN  = (1 << 0),
	STIO_DEV_PRO_READOUT  = (1 << 1),
	STIO_DEV_PRO_READERR  = (1 << 2),

	STIO_DEV_PRO_ERRTOOUT = (1 << 3),
	STIO_DEV_PRO_OUTTOERR = (1 << 4),

	STIO_DEV_PRO_INTONUL  = (1 << 5),
	STIO_DEV_PRO_OUTTONUL = (1 << 6),
	STIO_DEV_PRO_ERRTONUL = (1 << 7),

	STUO_DEV_PRO_DROPIN   = (1 << 8),
	STUO_DEV_PRO_DROPOUT  = (1 << 9),
	STUO_DEV_PRO_DROPERR  = (1 << 10)
};
typedef enum stio_dev_pro_make_flag_t stio_dev_pro_make_flag_t;

typedef struct stio_dev_pro_make_t stio_dev_pro_make_t;
struct stio_dev_pro_make_t
{
	int flags; /**< bitwise-ORed of stio_dev_pro_make_flag_t enumerators */
	const void* cmd;
	stio_dev_pro_on_write_t on_write;
	stio_dev_pro_on_read_t on_read;
};

#ifdef __cplusplus
extern "C" {
#endif

STIO_EXPORT  stio_dev_pro_t* stio_dev_pro_make (
	stio_t*                    stio,
	stio_size_t                xtnsize,
	const stio_dev_pro_make_t* data
);

STIO_EXPORT void stio_dev_pro_kill (
	stio_dev_pro_t* pro
);

STIO_EXPORT int stio_dev_pro_write (
	stio_dev_pro_t*  pro,
	const void*      data,
	stio_iolen_t     len,
	void*            wrctx
);

#ifdef __cplusplus
}
#endif

#endif