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heritage.h

/*-
 * Copyright (c) 2006 Verdens Gang AS
 * Copyright (c) 2006 Linpro AS
 * All rights reserved.
 *
 * Author: Poul-Henning Kamp <phk@phk.freebsd.dk>
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY AUTHOR AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 *
 * $Id: heritage.h 1096 2006-09-20 07:50:27Z des $
 *
 * This file contains the heritage passed when mgt forks cache
 */

struct heritage {

      /*
       * Two pipe(2)'s for CLI connection between cache and mgt.
       * cache reads [2] and writes [1].  Mgt reads [0] and writes [3].
       */
      int   fds[4];

      /* Socket from which to accept connections */
      int               socket;

      /* Share memory log fd and size (incl header) */
      int               vsl_fd;
      unsigned          vsl_size;

      /* Storage method */
      struct stevedore  *stevedore;

      /* Hash method */
      struct hash_slinger     *hash;

};

struct params {

      /* TTL used for lack of anything better */
      unsigned          default_ttl;

      /* Worker threads */
      unsigned          wthread_min;
      unsigned          wthread_max;
      unsigned          wthread_timeout;
      unsigned          wthread_pools;

      unsigned          overflow_max;

      /* Memory allocation hints */
      unsigned          mem_workspace;

      /* Acceptor hints */
      unsigned          sess_timeout;
      unsigned          pipe_timeout;
      unsigned          send_timeout;

      /* Management hints */
      unsigned          auto_restart;

      /* Fetcher hints */
      unsigned          fetch_chunksize;

      /* Sendfile object minimum size */
      unsigned          sendfile_threshold;

      /* VCL traces */
      unsigned          vcl_trace;

      /* Listen address */
      char              *listen_address;
      char              *listen_host;
      char              *listen_port;

      /* Listen depth */
      unsigned          listen_depth;

      /* Srcaddr hash */
      unsigned          srcaddr_hash;
      unsigned          srcaddr_ttl;

      /* HTTP proto behaviour */
      unsigned          backend_http11;
      unsigned          client_http11;
};

extern struct params *params;
extern struct heritage heritage;

void child_main(void);

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