mirror of https://github.com/asterisk/asterisk
git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@1673 65c4cc65-6c06-0410-ace0-fbb531ad65f31.0
Mark Spencer
22 years ago
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/*
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Copyright (c) 2002 Jorge Acereda <jacereda@users.sourceforge.net> &
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Peter O'Gorman <ogorman@users.sourceforge.net>
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Portions may be copyright others, see the AUTHORS file included with this
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distribution.
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Maintained by Peter O'Gorman <ogorman@users.sourceforge.net>
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Bug Reports and other queries should go to <ogorman@users.sourceforge.net>
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Permission is hereby granted, free of charge, to any person obtaining
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a copy of this software and associated documentation files (the
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"Software"), to deal in the Software without restriction, including
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without limitation the rights to use, copy, modify, merge, publish,
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distribute, sublicense, and/or sell copies of the Software, and to
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permit persons to whom the Software is furnished to do so, subject to
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the following conditions:
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The above copyright notice and this permission notice shall be
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included in all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
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LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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#ifndef _DLFCN_H_
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#define _DLFCN_H_
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#ifdef __cplusplus
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extern "C" {
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#endif
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#if defined (__GNUC__) && __GNUC__ > 3
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#define dl_restrict __restrict
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#else
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#define dl_restrict
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#endif
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/*
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* Structure filled in by dladdr().
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*/
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typedef struct dl_info {
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const char *dli_fname; /* Pathname of shared object */
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void *dli_fbase; /* Base address of shared object */
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const char *dli_sname; /* Name of nearest symbol */
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void *dli_saddr; /* Address of nearest symbol */
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} Dl_info;
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extern void * dlopen(const char *path, int mode);
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extern void * dlsym(void * dl_restrict handle, const char * dl_restrict symbol);
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extern const char * dlerror(void);
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extern int dlclose(void * handle);
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extern int dladdr(const void * dl_restrict, Dl_info * dl_restrict);
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#define RTLD_LAZY 0x1
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#define RTLD_NOW 0x2
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#define RTLD_LOCAL 0x4
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#define RTLD_GLOBAL 0x8
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#define RTLD_NOLOAD 0x10
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#define RTLD_NODELETE 0x80
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/*
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* Special handle arguments for dlsym().
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*/
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#define RTLD_NEXT ((void *) -1) /* Search subsequent objects. */
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#define RTLD_DEFAULT ((void *) -2) /* Use default search algorithm. */
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#ifdef __cplusplus
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}
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#endif
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#endif /* _DLFCN_H_ */
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/*---------------------------------------------------------------------------*\
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$Id$
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NAME
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poll - select(2)-based poll() emulation function for BSD systems.
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SYNOPSIS
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#include "poll.h"
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struct pollfd
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{
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int fd;
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short events;
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short revents;
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}
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int poll (struct pollfd *pArray, unsigned long n_fds, int timeout)
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DESCRIPTION
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This file, and the accompanying "poll.c", implement the System V
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poll(2) system call for BSD systems (which typically do not provide
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poll()). Poll() provides a method for multiplexing input and output
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on multiple open file descriptors; in traditional BSD systems, that
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capability is provided by select(). While the semantics of select()
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differ from those of poll(), poll() can be readily emulated in terms
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of select() -- which is how this function is implemented.
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REFERENCES
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Stevens, W. Richard. Unix Network Programming. Prentice-Hall, 1990.
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NOTES
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1. This software requires an ANSI C compiler.
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LICENSE
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This software is released under the following license:
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Copyright (c) 1995-2002 Brian M. Clapper
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All rights reserved.
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Redistribution and use in source and binary forms are
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permitted provided that: (1) source distributions retain
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this entire copyright notice and comment; (2) modifications
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made to the software are prominently mentioned, and a copy
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of the original software (or a pointer to its location) are
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included; and (3) distributions including binaries display
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the following acknowledgement: "This product includes
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software developed by Brian M. Clapper <bmc@clapper.org>"
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in the documentation or other materials provided with the
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distribution. The name of the author may not be used to
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endorse or promote products derived from this software
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without specific prior written permission.
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THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS
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OR IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE
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IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
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PARTICULAR PURPOSE.
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Effectively, this means you can do what you want with the software
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except remove this notice or take advantage of the author's name.
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If you modify the software and redistribute your modified version,
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you must indicate that your version is a modification of the
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original, and you must provide either a pointer to or a copy of the
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original.
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\*---------------------------------------------------------------------------*/
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#ifndef _POLL_EMUL_H_
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#define _POLL_EMUL_H_
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#define POLLIN 0x01
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#define POLLPRI 0x02
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#define POLLOUT 0x04
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#define POLLERR 0x08
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#define POLLHUP 0x10
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#define POLLNVAL 0x20
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struct pollfd
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{
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int fd;
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short events;
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short revents;
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};
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#ifdef __cplusplus
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extern "C"
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{
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#endif
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#if (__STDC__ > 0) || defined(__cplusplus)
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extern int poll (struct pollfd *pArray, unsigned long n_fds, int timeout);
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#else
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extern int poll();
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#endif
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#ifdef __cplusplus
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}
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#endif
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#endif /* _POLL_EMUL_H_ */
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