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/*
* Copyright (C) 2015 Takuo Yonezawa <Yonezawa-T2@mail.dnp.co.jp>
*
* 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.
*/
/**
* @ingroup native_cpu
* @{
*
* @file
* @brief Multiple asynchronus read on file descriptors
*
* @author Takuo Yonezawa <Yonezawa-T2@mail.dnp.co.jp>
*/
#ifndef ASYNC_READ_H
#define ASYNC_READ_H
#ifdef __cplusplus
extern "C" {
#endif
/**
* @brief Maximum number of file descriptors
*/
#ifndef ASYNC_READ_NUMOF
#define ASYNC_READ_NUMOF 2
#endif
/**
* @brief asynchronus read callback type
*/
typedef void (*native_async_read_callback_t)(int fd, void *arg);
/**
* @brief initialize asynchronus read system
*
* This registers SIGIO signal handler.
*/
void native_async_read_setup(void);
/**
* @brief shutdown asynchronus read system
*
* This deregisters SIGIO signal handler.
*/
void native_async_read_cleanup(void);
/**
* @brief resume monitoring of file descriptors
*
* Call this function after reading file descriptors.
*
* @param[in] fd The file descriptor to monitor
*/
void native_async_read_continue(int fd);
/**
* @brief start monitoring of file descriptor
*
* @param[in] fd The file descriptor to monitor
* @param[in] arg Pointer to be passed as arguments to the callback
* @param[in] handler The callback function to be called when the file
* descriptor is ready to read.
*/
void native_async_read_add_handler(int fd, void *arg, native_async_read_callback_t handler);
#ifdef __cplusplus
}
#endif
#endif
/** @} */
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