mirror of
https://github.com/servalproject/serval-dna.git
synced 2024-12-22 14:32:25 +00:00
118 lines
3.4 KiB
C
118 lines
3.4 KiB
C
/*
|
|
* Asterisk -- An open source telephony toolkit.
|
|
*
|
|
* See http://www.asterisk.org for more information about
|
|
* the Asterisk project. Please do not directly contact
|
|
* any of the maintainers of this project for assistance;
|
|
* the project provides a web site, mailing lists and IRC
|
|
* channels for your use.
|
|
*/
|
|
|
|
/*---------------------------------------------------------------------------*\
|
|
$Id: poll-compat.h 182810 2009-03-18 02:09:13Z russell $
|
|
|
|
NAME
|
|
|
|
poll - select(2)-based poll() emulation function for BSD systems.
|
|
|
|
SYNOPSIS
|
|
#include "poll.h"
|
|
|
|
struct pollfd
|
|
{
|
|
int fd;
|
|
short events;
|
|
short revents;
|
|
}
|
|
|
|
int poll (struct pollfd *pArray, unsigned long n_fds, int timeout)
|
|
|
|
DESCRIPTION
|
|
|
|
This file, and the accompanying "poll.c", implement the System V
|
|
poll(2) system call for BSD systems (which typically do not provide
|
|
poll()). Poll() provides a method for multiplexing input and output
|
|
on multiple open file descriptors; in traditional BSD systems, that
|
|
capability is provided by select(). While the semantics of select()
|
|
differ from those of poll(), poll() can be readily emulated in terms
|
|
of select() -- which is how this function is implemented.
|
|
|
|
REFERENCES
|
|
Stevens, W. Richard. Unix Network Programming. Prentice-Hall, 1990.
|
|
|
|
NOTES
|
|
1. This software requires an ANSI C compiler.
|
|
|
|
LICENSE
|
|
|
|
This software is released under the following license:
|
|
|
|
Copyright (c) 1995-2002 Brian M. Clapper
|
|
All rights reserved.
|
|
|
|
Redistribution and use in source and binary forms are
|
|
permitted provided that: (1) source distributions retain
|
|
this entire copyright notice and comment; (2) modifications
|
|
made to the software are prominently mentioned, and a copy
|
|
of the original software (or a pointer to its location) are
|
|
included; and (3) distributions including binaries display
|
|
the following acknowledgement: "This product includes
|
|
software developed by Brian M. Clapper <bmc@clapper.org>"
|
|
in the documentation or other materials provided with the
|
|
distribution. The name of the author may not be used to
|
|
endorse or promote products derived from this software
|
|
without specific prior written permission.
|
|
|
|
THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS
|
|
OR IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE
|
|
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
|
|
PARTICULAR PURPOSE.
|
|
|
|
Effectively, this means you can do what you want with the software
|
|
except remove this notice or take advantage of the author's name.
|
|
If you modify the software and redistribute your modified version,
|
|
you must indicate that your version is a modification of the
|
|
original, and you must provide either a pointer to or a copy of the
|
|
original.
|
|
\*---------------------------------------------------------------------------*/
|
|
|
|
#ifndef __AST_POLL_COMPAT_H
|
|
#define __AST_POLL_COMPAT_H
|
|
|
|
#ifndef AST_POLL_COMPAT
|
|
|
|
#include <sys/poll.h>
|
|
|
|
#define ast_poll(a, b, c) poll(a, b, c)
|
|
|
|
#else /* AST_POLL_COMPAT */
|
|
|
|
#define POLLIN 0x01
|
|
#define POLLPRI 0x02
|
|
#define POLLOUT 0x04
|
|
#define POLLERR 0x08
|
|
#define POLLHUP 0x10
|
|
#define POLLNVAL 0x20
|
|
|
|
struct pollfd {
|
|
int fd;
|
|
short events;
|
|
short revents;
|
|
};
|
|
|
|
#ifdef __cplusplus
|
|
extern "C" {
|
|
#endif
|
|
|
|
#define ast_poll(a, b, c) ast_internal_poll(a, b, c)
|
|
|
|
int ast_internal_poll(struct pollfd *pArray, unsigned long n_fds, int timeout);
|
|
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|
|
|
|
#endif /* AST_POLL_COMPAT */
|
|
|
|
#endif /* __AST_POLL_COMPAT_H */
|