161 lines
4.1 KiB
C
161 lines
4.1 KiB
C
/*
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* $Id$
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*
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Copyright (c) 2016-2020 Chung, Hyung-Hwan. All rights reserved.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted pipevided that the following conditions
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are met:
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1. Redistributions of source code must retain the above copyright
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notice, this list of conditions and the following disclaimer.
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2. Redistributions in binary form must repipeduce the above copyright
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notice, this list of conditions and the following disclaimer in the
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documentation and/or other materials pipevided with the distribution.
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THIS SOFTWARE IS PIPEVIDED BY THE AUTHOR "AS IS" AND ANY EXPRESS OR
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IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WAfRRANTIES
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OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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NOT LIMITED TO, PIPECUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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DATA, OR PIPEFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef _MIO_PIPE_H_
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#define _MIO_PIPE_H_
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#include <mio.h>
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enum mio_dev_pipe_sid_t
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{
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MIO_DEV_PIPE_MASTER = -1, /* no io occurs on this. used only in on_close() */
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MIO_DEV_PIPE_IN = 0, /* input */
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MIO_DEV_PIPE_OUT = 1 /* output */
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};
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typedef enum mio_dev_pipe_sid_t mio_dev_pipe_sid_t;
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typedef struct mio_dev_pipe_t mio_dev_pipe_t;
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typedef struct mio_dev_pipe_slave_t mio_dev_pipe_slave_t;
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typedef int (*mio_dev_pipe_on_read_t) (
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mio_dev_pipe_t* dev,
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const void* data,
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mio_iolen_t len
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);
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typedef int (*mio_dev_pipe_on_write_t) (
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mio_dev_pipe_t* dev,
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mio_iolen_t wrlen,
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void* wrctx
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);
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typedef void (*mio_dev_pipe_on_close_t) (
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mio_dev_pipe_t* dev,
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mio_dev_pipe_sid_t sid
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);
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struct mio_dev_pipe_t
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{
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MIO_DEV_HEADER;
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mio_dev_pipe_slave_t* slave[2];
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int slave_count;
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mio_dev_pipe_on_read_t on_read;
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mio_dev_pipe_on_write_t on_write;
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mio_dev_pipe_on_close_t on_close;
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};
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struct mio_dev_pipe_slave_t
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{
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MIO_DEV_HEADER;
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mio_dev_pipe_sid_t id;
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mio_syshnd_t pfd;
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mio_dev_pipe_t* master; /* parent device */
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};
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typedef struct mio_dev_pipe_make_t mio_dev_pipe_make_t;
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struct mio_dev_pipe_make_t
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{
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mio_dev_pipe_on_write_t on_write; /* mandatory */
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mio_dev_pipe_on_read_t on_read; /* mandatory */
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mio_dev_pipe_on_close_t on_close; /* optional */
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};
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enum mio_dev_pipe_ioctl_cmd_t
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{
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MIO_DEV_PIPE_CLOSE
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};
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typedef enum mio_dev_pipe_ioctl_cmd_t mio_dev_pipe_ioctl_cmd_t;
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#ifdef __cplusplus
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extern "C" {
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#endif
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MIO_EXPORT mio_dev_pipe_t* mio_dev_pipe_make (
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mio_t* mio,
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mio_oow_t xtnsize,
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const mio_dev_pipe_make_t* data
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);
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#if defined(MIO_HAVE_INLINE)
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static MIO_INLINE mio_t* mio_dev_pipe_getmio (mio_dev_pipe_t* pipe) { return mio_dev_getmio((mio_dev_t*)pipe); }
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#else
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# define mio_dev_pipe_getmio(pipe) mio_dev_getmio(pipe)
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#endif
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#if defined(MIO_HAVE_INLINE)
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static MIO_INLINE void* mio_dev_pipe_getxtn (mio_dev_pipe_t* pipe) { return (void*)(pipe + 1); }
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#else
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# define mio_dev_pipe_getxtn(pipe) ((void*)(((mio_dev_pipe_t*)pipe) + 1))
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#endif
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MIO_EXPORT void mio_dev_pipe_kill (
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mio_dev_pipe_t* pipe
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);
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MIO_EXPORT void mio_dev_pipe_halt (
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mio_dev_pipe_t* pipe
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);
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MIO_EXPORT int mio_dev_pipe_read (
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mio_dev_pipe_t* pipe,
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int enabled
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);
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MIO_EXPORT int mio_dev_pipe_timedread (
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mio_dev_pipe_t* pipe,
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int enabled,
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const mio_ntime_t* tmout
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);
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MIO_EXPORT int mio_dev_pipe_write (
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mio_dev_pipe_t* pipe,
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const void* data,
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mio_iolen_t len,
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void* wrctx
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);
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MIO_EXPORT int mio_dev_pipe_timedwrite (
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mio_dev_pipe_t* pipe,
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const void* data,
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mio_iolen_t len,
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const mio_ntime_t* tmout,
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void* wrctx
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);
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MIO_EXPORT int mio_dev_pipe_close (
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mio_dev_pipe_t* pipe,
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mio_dev_pipe_sid_t sid
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);
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#ifdef __cplusplus
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}
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#endif
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#endif
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