Apache2
 All Data Structures Namespaces Files Functions Variables Typedefs Enumerations Enumerator Macros Groups Pages
mpm_default.h
Go to the documentation of this file.
1 /* Licensed to the Apache Software Foundation (ASF) under one or more
2  * contributor license agreements. See the NOTICE file distributed with
3  * this work for additional information regarding copyright ownership.
4  * The ASF licenses this file to You under the Apache License, Version 2.0
5  * (the "License"); you may not use this file except in compliance with
6  * the License. You may obtain a copy of the License at
7  *
8  * http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16 
25 #ifndef APACHE_MPM_DEFAULT_H
26 #define APACHE_MPM_DEFAULT_H
27 
28 /* Limit on the threads per process. Clients will be locked out if more than
29  * this * HARD_SERVER_LIMIT are needed.
30  *
31  * We keep this for one reason it keeps the size of the scoreboard file small
32  * enough that we can read the whole thing without worrying too much about
33  * the overhead.
34  */
35 #ifndef HARD_THREAD_LIMIT
36 #define HARD_THREAD_LIMIT 2048
37 #endif
38 
39 #ifndef DEFAULT_THREADS_PER_CHILD
40 #define DEFAULT_THREADS_PER_CHILD 50
41 #endif
42 
43 /* Number of threads to spawn off by default --- also, if fewer than
44  * this free when the caretaker checks, it will spawn more.
45  */
46 #ifndef DEFAULT_START_THREADS
47 #define DEFAULT_START_THREADS DEFAULT_THREADS_PER_CHILD
48 #endif
49 
50 /* Maximum number of *free* threads --- more than this, and
51  * they will die off.
52  */
53 
54 #ifndef DEFAULT_MAX_FREE_THREADS
55 #define DEFAULT_MAX_FREE_THREADS 100
56 #endif
57 
58 /* Minimum --- fewer than this, and more will be created */
59 
60 #ifndef DEFAULT_MIN_FREE_THREADS
61 #define DEFAULT_MIN_FREE_THREADS 10
62 #endif
63 
64 /*
65  * Interval, in microseconds, between scoreboard maintenance.
66  */
67 #ifndef SCOREBOARD_MAINTENANCE_INTERVAL
68 #define SCOREBOARD_MAINTENANCE_INTERVAL 1000000
69 #endif
70 
71 /* Default stack size allocated for each worker thread.
72  */
73 #ifndef DEFAULT_THREAD_STACKSIZE
74 #define DEFAULT_THREAD_STACKSIZE 65536
75 #endif
76 
77 #endif /* AP_MPM_DEFAULT_H */
78