1 /*-
2 * See the file LICENSE for redistribution information.
3 *
4 * Copyright (c) 1997, 1998
5 * Sleepycat Software. All rights reserved.
6 */
7
8 #include "config.h"
9
10 #ifndef lint
11 static const char sccsid[] = "@(#)os_config.c 10.30 (Sleepycat) 10/12/98";
12 #endif /* not lint */
13
14 #ifndef NO_SYSTEM_INCLUDES
15 #include <sys/types.h>
16
17 #include <errno.h>
18 #endif
19
20 #include "db_int.h"
21 #include "os_jump.h"
22
23 struct __db_jumptab __db_jump;
24
25 DB_GLOBALS __db_global_values = {
26 1, /* DB_MUTEXLOCKS */
27 0, /* DB_PAGEYIELD */
28 0, /* DB_REGION_ANON, DB_REGION_NAME */
29 0, /* DB_REGION_INIT */
30 0, /* DB_TSL_SPINS */
31 {NULL, &__db_global_values.db_envq.tqh_first}, /* Environemnt queue */
32 {NULL, &__db_global_values.db_nameq.tqh_first} /* Name queue */
33 };
34
35 /*
36 * db_jump_set --
37 * Replace functions for the DB package.
38 */
39 int
db_jump_set(func,which)40 db_jump_set(func, which)
41 void *func;
42 int which;
43 {
44 switch (which) {
45 case DB_FUNC_CLOSE:
46 __db_jump.j_close = (int (*) __P((int)))func;
47 break;
48 case DB_FUNC_DIRFREE:
49 __db_jump.j_dirfree = (void (*) __P((char **, int)))func;
50 break;
51 case DB_FUNC_DIRLIST:
52 __db_jump.j_dirlist =
53 (int (*) __P((const char *, char ***, int *)))func;
54 break;
55 case DB_FUNC_EXISTS:
56 __db_jump.j_exists = (int (*) __P((const char *, int *)))func;
57 break;
58 case DB_FUNC_FREE:
59 __db_jump.j_free = (void (*) __P((void *)))func;
60 break;
61 case DB_FUNC_FSYNC:
62 __db_jump.j_fsync = (int (*) __P((int)))func;
63 break;
64 case DB_FUNC_IOINFO:
65 __db_jump.j_ioinfo = (int (*) __P((const char *,
66 int, u_int32_t *, u_int32_t *, u_int32_t *)))func;
67 break;
68 case DB_FUNC_MALLOC:
69 __db_jump.j_malloc = (void *(*) __P((size_t)))func;
70 break;
71 case DB_FUNC_MAP:
72 __db_jump.j_map = (int (*)
73 __P((char *, int, size_t, int, int, int, void **)))func;
74 break;
75 case DB_FUNC_OPEN:
76 __db_jump.j_open = (int (*) __P((const char *, int, ...)))func;
77 break;
78 case DB_FUNC_READ:
79 __db_jump.j_read =
80 (ssize_t (*) __P((int, void *, size_t)))func;
81 break;
82 case DB_FUNC_REALLOC:
83 __db_jump.j_realloc = (void *(*) __P((void *, size_t)))func;
84 break;
85 case DB_FUNC_RUNLINK:
86 __db_jump.j_runlink = (int (*) __P((char *)))func;
87 break;
88 case DB_FUNC_SEEK:
89 __db_jump.j_seek = (int (*)
90 __P((int, size_t, db_pgno_t, u_int32_t, int, int)))func;
91 break;
92 case DB_FUNC_SLEEP:
93 __db_jump.j_sleep = (int (*) __P((u_long, u_long)))func;
94 break;
95 case DB_FUNC_UNLINK:
96 __db_jump.j_unlink = (int (*) __P((const char *)))func;
97 break;
98 case DB_FUNC_UNMAP:
99 __db_jump.j_unmap = (int (*) __P((void *, size_t)))func;
100 break;
101 case DB_FUNC_WRITE:
102 __db_jump.j_write =
103 (ssize_t (*) __P((int, const void *, size_t)))func;
104 break;
105 case DB_FUNC_YIELD:
106 __db_jump.j_yield = (int (*) __P((void)))func;
107 break;
108 default:
109 return (EINVAL);
110 }
111 return (0);
112 }
113
114 /*
115 * db_value_set --
116 * Replace values for the DB package.
117 */
118 int
db_value_set(value,which)119 db_value_set(value, which)
120 int value, which;
121 {
122 int ret;
123
124 switch (which) {
125 case DB_MUTEXLOCKS:
126 DB_GLOBAL(db_mutexlocks) = value;
127 break;
128 case DB_PAGEYIELD:
129 DB_GLOBAL(db_pageyield) = value;
130 break;
131 case DB_REGION_ANON:
132 if (value != 0 && (ret = __db_mapanon_ok(0)) != 0)
133 return (ret);
134 DB_GLOBAL(db_region_anon) = value;
135 break;
136 case DB_REGION_INIT:
137 DB_GLOBAL(db_region_init) = value;
138 break;
139 case DB_REGION_NAME:
140 if (value != 0 && (ret = __db_mapanon_ok(1)) != 0)
141 return (ret);
142 DB_GLOBAL(db_region_anon) = value;
143 break;
144 case DB_TSL_SPINS:
145 if (value <= 0)
146 return (EINVAL);
147 DB_GLOBAL(db_tsl_spins) = value;
148 break;
149 default:
150 return (EINVAL);
151 }
152 return (0);
153 }
154