poll_emu.h
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00001 /*---------------------------------------------------------------------------*\
00002   $Id: poll.h,v 1.3 2002/05/11 11:32:30 bmc Exp $
00003 
00004   NAME
00005 
00006         poll - select(2)-based poll() emulation function for BSD systems.
00007 
00008   SYNOPSIS
00009         #include "poll.h"
00010 
00011         struct pollfd
00012         {
00013             int     fd;
00014             short   events;
00015             short   revents;
00016         }
00017 
00018         int poll (struct pollfd *pArray, unsigned long n_fds, int timeout)
00019 
00020   DESCRIPTION
00021 
00022         This file, and the accompanying "poll.c", implement the System V
00023         poll(2) system call for BSD systems (which typically do not provide
00024         poll()).  Poll() provides a method for multiplexing input and output
00025         on multiple open file descriptors; in traditional BSD systems, that
00026         capability is provided by select().  While the semantics of select()
00027         differ from those of poll(), poll() can be readily emulated in terms
00028         of select() -- which is how this function is implemented.
00029 
00030   REFERENCES
00031         Stevens, W. Richard. Unix Network Programming.  Prentice-Hall, 1990.
00032 
00033   NOTES
00034         1. This software requires an ANSI C compiler.
00035 
00036   LICENSE
00037 
00038         This software is released under the following license:
00039 
00040                 Copyright (c) 1995-2002 Brian M. Clapper
00041                 All rights reserved.
00042 
00043                 Redistribution and use in source and binary forms are
00044                 permitted provided that: (1) source distributions retain
00045                 this entire copyright notice and comment; (2) modifications
00046                 made to the software are prominently mentioned, and a copy
00047                 of the original software (or a pointer to its location) are
00048                 included; and (3) distributions including binaries display
00049                 the following acknowledgement: "This product includes
00050                 software developed by Brian M. Clapper <bmc@clapper.org>"
00051                 in the documentation or other materials provided with the
00052                 distribution. The name of the author may not be used to
00053                 endorse or promote products derived from this software
00054                 without specific prior written permission.
00055 
00056                 THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS
00057                 OR IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE
00058                 IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
00059                 PARTICULAR PURPOSE.
00060 
00061         Effectively, this means you can do what you want with the software
00062         except remove this notice or take advantage of the author's name.
00063         If you modify the software and redistribute your modified version,
00064         you must indicate that your version is a modification of the
00065         original, and you must provide either a pointer to or a copy of the
00066         original.
00067 \*---------------------------------------------------------------------------*/
00068 
00069 /*
00070 HISTORY
00071 
00072 ** 2008-02-15 Antoine Beyeler <abeyeler at ab-ware dot com>
00073 Trivial modification to change call name (poll() -> poll_emu()).
00074 
00075 */
00076 
00077 #ifndef _POLL_EMUL_H_
00078 #define _POLL_EMUL_H_
00079 
00080 #ifndef POLLIN
00081 #define POLLIN          0x01
00082 #endif
00083 #ifndef POLLPRI
00084 #define POLLPRI         0x02
00085 #endif
00086 #ifndef POLLOUT
00087 #define POLLOUT         0x04
00088 #endif
00089 #ifndef POLLERR
00090 #define POLLERR         0x08
00091 #endif
00092 #ifndef POLLHUP
00093 #define POLLHUP         0x10
00094 #endif
00095 #ifndef POLLNVAL
00096 #define POLLNVAL        0x20
00097 #endif
00098 
00099 
00100 struct pollfd
00101 {
00102     int     fd;
00103     short   events;
00104     short   revents;
00105 };
00106 
00107 
00108 #ifdef __cplusplus
00109 extern "C"
00110 {
00111 #endif
00112 
00113 #if (__STDC__ > 0) || defined(__cplusplus)
00114 extern int poll_emu (struct pollfd *pArray, unsigned long n_fds, int timeout);
00115 #else
00116 extern int poll_emu();
00117 #endif
00118 
00119 #ifdef __cplusplus
00120 }
00121 #endif
00122 
00123 #endif /* _POLL_EMUL_H_ */


dashel
Author(s): Stéphane Magnenat
autogenerated on Thu Jan 2 2014 11:17:11