aboutsummaryrefslogtreecommitdiff
path: root/db2/os/os_config.c
blob: 71d379a3870ef682dbb6f9bfc1698bff11613e7d (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
/*-
 * See the file LICENSE for redistribution information.
 *
 * Copyright (c) 1997, 1998
 *	Sleepycat Software.  All rights reserved.
 */

#include "config.h"

#ifndef lint
static const char sccsid[] = "@(#)os_config.c	10.30 (Sleepycat) 10/12/98";
#endif /* not lint */

#ifndef NO_SYSTEM_INCLUDES
#include <sys/types.h>

#include <errno.h>
#endif

#include "db_int.h"
#include "os_jump.h"

struct __db_jumptab __db_jump;

DB_GLOBALS __db_global_values = {
	1,				/* DB_MUTEXLOCKS */
	0,				/* DB_PAGEYIELD */
	0,				/* DB_REGION_ANON, DB_REGION_NAME */
	0,				/* DB_REGION_INIT */
	0,				/* DB_TSL_SPINS */
        {NULL, &__db_global_values.db_envq.tqh_first},  /* Environemnt queue */
	{NULL, &__db_global_values.db_nameq.tqh_first}	/* Name queue */
};

/*
 * db_jump_set --
 *	Replace functions for the DB package.
 */
int
db_jump_set(func, which)
	void *func;
	int which;
{
	switch (which) {
	case DB_FUNC_CLOSE:
		__db_jump.j_close = (int (*) __P((int)))func;
		break;
	case DB_FUNC_DIRFREE:
		__db_jump.j_dirfree = (void (*) __P((char **, int)))func;
		break;
	case DB_FUNC_DIRLIST:
		__db_jump.j_dirlist =
		    (int (*) __P((const char *, char ***, int *)))func;
		break;
	case DB_FUNC_EXISTS:
		__db_jump.j_exists = (int (*) __P((const char *, int *)))func;
		break;
	case DB_FUNC_FREE:
		__db_jump.j_free = (void (*) __P((void *)))func;
		break;
	case DB_FUNC_FSYNC:
		__db_jump.j_fsync = (int (*) __P((int)))func;
		break;
	case DB_FUNC_IOINFO:
		__db_jump.j_ioinfo = (int (*) __P((const char *,
		    int, u_int32_t *, u_int32_t *, u_int32_t *)))func;
		break;
	case DB_FUNC_MALLOC:
		__db_jump.j_malloc = (void *(*) __P((size_t)))func;
		break;
	case DB_FUNC_MAP:
		__db_jump.j_map = (int (*)
		    __P((char *, int, size_t, int, int, int, void **)))func;
		break;
	case DB_FUNC_OPEN:
		__db_jump.j_open = (int (*) __P((const char *, int, ...)))func;
		break;
	case DB_FUNC_READ:
		__db_jump.j_read =
		    (ssize_t (*) __P((int, void *, size_t)))func;
		break;
	case DB_FUNC_REALLOC:
		__db_jump.j_realloc = (void *(*) __P((void *, size_t)))func;
		break;
	case DB_FUNC_RUNLINK:
		__db_jump.j_runlink = (int (*) __P((char *)))func;
		break;
	case DB_FUNC_SEEK:
		__db_jump.j_seek = (int (*)
		    __P((int, size_t, db_pgno_t, u_int32_t, int, int)))func;
		break;
	case DB_FUNC_SLEEP:
		__db_jump.j_sleep = (int (*) __P((u_long, u_long)))func;
		break;
	case DB_FUNC_UNLINK:
		__db_jump.j_unlink = (int (*) __P((const char *)))func;
		break;
	case DB_FUNC_UNMAP:
		__db_jump.j_unmap = (int (*) __P((void *, size_t)))func;
		break;
	case DB_FUNC_WRITE:
		__db_jump.j_write =
		    (ssize_t (*) __P((int, const void *, size_t)))func;
		break;
	case DB_FUNC_YIELD:
		__db_jump.j_yield = (int (*) __P((void)))func;
		break;
	default:
		return (EINVAL);
	}
	return (0);
}

/*
 * db_value_set --
 *	Replace values for the DB package.
 */
int
db_value_set(value, which)
	int value, which;
{
	int ret;

	switch (which) {
	case DB_MUTEXLOCKS:
		DB_GLOBAL(db_mutexlocks) = value;
		break;
	case DB_PAGEYIELD:
		DB_GLOBAL(db_pageyield) = value;
		break;
	case DB_REGION_ANON:
		if (value != 0 && (ret = __db_mapanon_ok(0)) != 0)
			return (ret);
		DB_GLOBAL(db_region_anon) = value;
		break;
	case DB_REGION_INIT:
		DB_GLOBAL(db_region_init) = value;
		break;
	case DB_REGION_NAME:
		if (value != 0 && (ret = __db_mapanon_ok(1)) != 0)
			return (ret);
		DB_GLOBAL(db_region_anon) = value;
		break;
	case DB_TSL_SPINS:
		if (value <= 0)
			return (EINVAL);
		DB_GLOBAL(db_tsl_spins) = value;
		break;
	default:
		return (EINVAL);
	}
	return (0);
}