/* ====================================================================
 * The Apache Software License, Version 1.1
 *
 * Copyright (c) 2000 The Apache Software Foundation.  All rights
 * reserved.
 *
 * 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.
 *
 * 3. The end-user documentation included with the redistribution,
 *    if any, must include the following acknowledgment:
 *       "This product includes software developed by the
 *        Apache Software Foundation (http://www.apache.org/)."
 *    Alternately, this acknowledgment may appear in the software itself,
 *    if and wherever such third-party acknowledgments normally appear.
 *
 * 4. The names "Apache" and "Apache Software Foundation" must
 *    not be used to endorse or promote products derived from this
 *    software without prior written permission. For written
 *    permission, please contact apache@apache.org.
 *
 * 5. Products derived from this software may not be called "Apache",
 *    nor may "Apache" appear in their name, without prior written
 *    permission of the Apache Software Foundation.
 *
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED 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 THE APACHE SOFTWARE FOUNDATION OR
 * ITS 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.
 * ====================================================================
 *
 * This software consists of voluntary contributions made by many
 * individuals on behalf of the Apache Software Foundation.  For more
 * information on the Apache Software Foundation, please see
 * <http://www.apache.org/>.
 *
 * Portions of this software are based upon public domain software
 * originally written at the National Center for Supercomputing Applications,
 * University of Illinois, Urbana-Champaign.
 */

#ifndef APACHE_MPM_DEFAULT_H
#define APACHE_MPM_DEFAULT_H

#define AP_ID_FROM_CHILD_THREAD(c, t)    ((c * HARD_THREAD_LIMIT) + t)
#define AP_CHILD_THREAD_FROM_ID(i)    (i / HARD_THREAD_LIMIT), (i % HARD_THREAD_LIMIT)

/* Number of threads to spawn off by default --- also, if fewer than
 * this free when the caretaker checks, it will spawn more.
 */
#ifndef DEFAULT_START_THREAD
#define DEFAULT_START_THREAD 5
#endif

/* Maximum number of *free* server threads --- more than this, and
 * they will die off.
 */

#ifndef DEFAULT_MAX_SPARE_THREAD
#define DEFAULT_MAX_SPARE_THREAD 10
#endif

/* Minimum --- fewer than this, and more will be created */

#ifndef DEFAULT_MIN_SPARE_THREAD
#define DEFAULT_MIN_SPARE_THREAD 5
#endif

/* Limit on the threads per process.  Clients will be locked out if more than
 * this  * HARD_SERVER_LIMIT are needed.
 *
 * We keep this for one reason it keeps the size of the scoreboard file small
 * enough that we can read the whole thing without worrying too much about
 * the overhead.
 */
#ifndef HARD_THREAD_LIMIT
#define HARD_THREAD_LIMIT 64 
#endif

/* Number of servers to spawn off by default
 */
#ifndef DEFAULT_NUM_DAEMON
#define DEFAULT_NUM_DAEMON 2
#endif

/* Limit on the total --- clients will be locked out if more servers than
 * this are needed.  It is intended solely to keep the server from crashing
 * when things get out of hand.
 *
 * We keep a hard maximum number of servers, for two reasons --- first off,
 * in case something goes seriously wrong, we want to stop the fork bomb
 * short of actually crashing the machine we're running on by filling some
 * kernel table.  Secondly, it keeps the size of the scoreboard file small
 * enough that we can read the whole thing without worrying too much about
 * the overhead.
 */
#ifndef HARD_SERVER_LIMIT
#define HARD_SERVER_LIMIT 8 
#endif

/* File used for accept locking, when we use a file */
#ifndef DEFAULT_LOCKFILE
#define DEFAULT_LOCKFILE "logs/accept.lock"
#endif

/* Scoreboard file, if there is one */
#ifndef DEFAULT_SCOREBOARD
#define DEFAULT_SCOREBOARD "logs/apache_runtime_status"
#endif

/* Where the main/parent process's pid is logged */
#ifndef DEFAULT_PIDLOG
#define DEFAULT_PIDLOG "logs/httpd.pid"
#endif

/*
 * Interval, in microseconds, between scoreboard maintenance.
 */
#ifndef SCOREBOARD_MAINTENANCE_INTERVAL
#define SCOREBOARD_MAINTENANCE_INTERVAL 1000000
#endif

/* Number of requests to try to handle in a single process.  If <= 0,
 * the children don't die off.
 */
#ifndef DEFAULT_MAX_REQUESTS_PER_CHILD
#define DEFAULT_MAX_REQUESTS_PER_CHILD 10000
#endif

#endif /* AP_MPM_DEFAULT_H */