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/*-
* 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 10.26 (Sleepycat) 5/23/98";
#endif /* not lint */
#ifndef NO_SYSTEM_INCLUDES
#include <sys/types.h>
#include <errno.h>
#endif
#include "db_int.h"
/*
* XXX
* We provide our own extern declarations so that we don't collide with
* systems that get them wrong, e.g., SunOS.
*/
#ifdef _WIN32
#define fsync _commit
#define imported __declspec(dllimport)
#else
#define imported
#endif
/*
* XXX
* HP/UX MPE doesn't have fsync, but you can build one using FCONTROL.
*/
#ifdef __hp3000s900
#define fsync __mpe_fsync
#endif
imported extern int close __P((int));
imported extern void free __P((void *));
imported extern int fsync __P((int));
imported extern void *malloc __P((size_t));
imported extern int open __P((const char *, int, ...));
imported extern ssize_t read __P((int, void *, size_t));
imported extern void *realloc __P((void *, size_t));
imported extern int unlink __P((const char *));
imported extern ssize_t write __P((int, const void *, size_t));
/*
* __db_jump --
* This list of interfaces that applications can replace. In some
* cases, the user is permitted to replace the standard ANSI C or
* POSIX 1003.1 call, e.g., malloc or read. In others, we provide
* a local interface to the functionality, e.g., __os_ioinfo.
*/
struct __db_jumptab __db_jump = {
close, /* DB_FUNC_CLOSE */
__os_dirfree, /* DB_FUNC_DIRFREE */
__os_dirlist, /* DB_FUNC_DIRLIST */
__os_exists, /* DB_FUNC_EXISTS */
free, /* DB_FUNC_FREE */
fsync, /* DB_FUNC_FSYNC */
__os_ioinfo, /* DB_FUNC_IOINFO */
malloc, /* DB_FUNC_MALLOC */
NULL, /* DB_FUNC_MAP */
open, /* DB_FUNC_OPEN */
read, /* DB_FUNC_READ */
realloc, /* DB_FUNC_REALLOC */
NULL, /* DB_FUNC_RUNLINK */
__os_seek, /* DB_FUNC_SEEK */
__os_sleep, /* DB_FUNC_SLEEP */
unlink, /* DB_FUNC_UNLINK */
NULL, /* DB_FUNC_UNMAP */
write, /* DB_FUNC_WRITE */
NULL /* DB_FUNC_YIELD */
};
DB_GLOBALS __db_global_values = {
1, /* DB_MUTEXLOCKS */
0, /* DB_REGION_ANON, DB_REGION_NAME */
0, /* DB_REGION_INIT */
0, /* DB_TSL_SPINS */
0 /* DB_PAGEYIELD */
};
/*
* 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);
}
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