1 /* ====================================================================
2 * The Apache Software License, Version 1.1
4 * Copyright (c) 2000 The Apache Software Foundation. All rights
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 * notice, this list of conditions and the following disclaimer in
16 * the documentation and/or other materials provided with the
19 * 3. The end-user documentation included with the redistribution,
20 * if any, must include the following acknowledgment:
21 * "This product includes software developed by the
22 * Apache Software Foundation (http://www.apache.org/)."
23 * Alternately, this acknowledgment may appear in the software itself,
24 * if and wherever such third-party acknowledgments normally appear.
26 * 4. The names "Apache" and "Apache Software Foundation" must
27 * not be used to endorse or promote products derived from this
28 * software without prior written permission. For written
29 * permission, please contact apache@apache.org.
31 * 5. Products derived from this software may not be called "Apache",
32 * nor may "Apache" appear in their name, without prior written
33 * permission of the Apache Software Foundation.
35 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
36 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
37 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
38 * DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
39 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
40 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
41 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
42 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
43 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
44 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
45 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
47 * ====================================================================
49 * This software consists of voluntary contributions made by many
50 * individuals on behalf of the Apache Software Foundation. For more
51 * information on the Apache Software Foundation, please see
52 * <http://www.apache.org/>.
54 * Portions of this software are based upon public domain software
55 * originally written at the National Center for Supercomputing Applications,
56 * University of Illinois, Urbana-Champaign.
59 #ifndef APACHE_MPM_DEFAULT_H
60 #define APACHE_MPM_DEFAULT_H
62 /* Number of threads to spawn off by default --- also, if fewer than
63 * this free when the caretaker checks, it will spawn more.
65 #ifndef DEFAULT_START_THREAD
66 #define DEFAULT_START_THREAD 5
69 /* Maximum number of *free* server threads --- more than this, and
71 #ifndef DEFAULT_MAX_SPARE_THREAD
72 #define DEFAULT_MAX_SPARE_THREAD 10
76 /* Minimum --- fewer than this, and more will be created */
78 #ifndef DEFAULT_MIN_SPARE_THREAD
79 #define DEFAULT_MIN_SPARE_THREAD 5
83 /* Limit on the threads per process. Clients will be locked out if more than
84 * this * HARD_SERVER_LIMIT are needed.
86 * We keep this for one reason it keeps the size of the scoreboard file small
87 * enough that we can read the whole thing without worrying too much about
90 #ifndef HARD_THREAD_LIMIT
91 #define HARD_THREAD_LIMIT 4096
94 /* Number of servers to spawn off by default
96 #ifndef DEFAULT_NUM_DAEMON
97 #define DEFAULT_NUM_DAEMON 1
100 /* Limit on the total --- clients will be locked out if more servers than
101 * this are needed. It is intended solely to keep the server from crashing
102 * when things get out of hand.
104 * We keep a hard maximum number of servers, for two reasons --- first off,
105 * in case something goes seriously wrong, we want to stop the fork bomb
106 * short of actually crashing the machine we're running on by filling some
107 * kernel table. Secondly, it keeps the size of the scoreboard file small
108 * enough that we can read the whole thing without worrying too much about
111 #ifndef HARD_SERVER_LIMIT
112 #define HARD_SERVER_LIMIT 8
115 /* Where the main/parent process's pid is logged */
116 #ifndef DEFAULT_PIDLOG
117 #define DEFAULT_PIDLOG "logs/httpd.pid"
121 * Interval, in microseconds, between scoreboard maintenance.
123 #ifndef SCOREBOARD_MAINTENANCE_INTERVAL
124 #define SCOREBOARD_MAINTENANCE_INTERVAL 1000000
127 /* Number of requests to try to handle in a single process. If <= 0,
128 * the children don't die off.
130 #ifndef DEFAULT_MAX_REQUESTS_PER_CHILD
131 #define DEFAULT_MAX_REQUESTS_PER_CHILD 10000
134 #endif /* AP_MPM_DEFAULT_H */