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/*
* Creation Date: <2000/07/25 00:23:51 samuel>
* Time-stamp: <2000/12/10 18:32:45 samuel>
*
* <async.h>
*
* Support of asynchronous I/O
*
* Copyright (C) 2000 Samuel Rydh (samuel@ibrium.se)
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation
*
*/
#ifndef _H_ASYNC
#define _H_ASYNC
#include <sys/poll.h>
extern void async_init( void );
extern void async_cleanup( void );
typedef void (*async_handler_t)( int fd, int events );
typedef void (*aevent_handler_t)( int token );
/* Only the main-thread may call tthe add/delete/set routines */
extern int add_async_handler( int fd, int events, async_handler_t proc, int sigio_capable );
extern void delete_async_handler( int handler_id );
/* Note: POLLHUP and POLLERR can not be masked */
extern void set_async_handler_events( int handler_id, int new_events );
extern int add_aevent_handler( aevent_handler_t proc );
extern void delete_aevent_handler( int token );
/* May be called by any thread */
extern void send_aevent( int token );
extern volatile int __io_is_pending;
extern void __do_async_io( void );
static inline int async_io_is_pending( void ) {
return __io_is_pending;
}
static inline void do_async_io( void ) {
if( __io_is_pending )
__do_async_io();
}
#endif /* _H_ASYNC */
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