/*
 * $Id$
 *
 *
 * SQUID Web Proxy Cache          http://www.squid-cache.org/
 * ----------------------------------------------------------
 *
 *  Squid is the result of efforts by numerous individuals from
 *  the Internet community; see the CONTRIBUTORS file for full
 *  details.   Many organizations have provided support for Squid's
 *  development; see the SPONSORS file for full details.  Squid is
 *  Copyrighted (C) 2001 by the Regents of the University of
 *  California; see the COPYRIGHT file for full details.  Squid
 *  incorporates software developed and/or copyrighted by other
 *  sources; see the CREDITS file for full details.
 *
 *  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; either version 2 of the License, or
 *  (at your option) any later version.
 *  
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *  
 *  You should have received a copy of the GNU General Public License
 *  along with this program; if not, write to the Free Software
 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111, USA.
 *
 */

#ifndef SQUID_IPC_H
#define SQUID_IPC_H


#define IPC_NONE 0
#define IPC_TCP_SOCKET 1
#define IPC_UDP_SOCKET 2

#ifndef _SQUID_MSWIN_

#if !(USE_POLL && defined(_SQUID_OSF_))

#define IPC_FIFO 3

#endif

#define IPC_UNIX_STREAM 4
#define IPC_UNIX_DGRAM 5
#endif

#if HAVE_SOCKETPAIR && defined (AF_UNIX)
#define IPC_STREAM IPC_UNIX_STREAM
#define IPC_DGRAM IPC_UNIX_DGRAM
#else
#define IPC_STREAM IPC_TCP_SOCKET
#define IPC_DGRAM IPC_UDP_SOCKET
#endif

struct IPCResult {
    IPCResult (int causelinkfailure); /* So it won't link */
    IPCResult (bool aBool=false, pid_t aPid=-1, int _rfd=-1, int _wfd = -1
      ) : success(aBool), pid (aPid), rfd (_rfd), wfd (_wfd)
	{}
    bool success;
    pid_t pid;
    int rfd;
    int wfd;
};

extern IPCResult ipcCreate(int type,
    const char *prog,
    const char *const args[],
    const char *name
);

#endif /* SQUID_IPC_H */