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/*-
* See the file LICENSE for redistribution information.
*
* Copyright (c) 1997
* Sleepycat Software. All rights reserved.
*
* @(#)os_func.h 10.4 (Sleepycat) 11/28/97
*/
/* Calls which can be replaced by the application. */
struct __db_jumptab {
int (*db_close) __P((int)); /* DB_FUNC_CLOSE */
void (*db_dirfree) __P((char **, int)); /* DB_FUNC_DIRFREE */
int (*db_dirlist) /* DB_FUNC_DIRLIST */
__P((const char *, char ***, int *));
int (*db_exists) /* DB_FUNC_EXISTS */
__P((const char *, int *));
void (*db_free) __P((void *)); /* DB_FUNC_FREE */
int (*db_fsync) __P((int)); /* DB_FUNC_FSYNC */
int (*db_ioinfo) /* DB_FUNC_IOINFO */
__P((const char *, int, off_t *, off_t *));
void *(*db_malloc) __P((size_t)); /* DB_FUNC_MALLOC */
int (*db_map) /* DB_FUNC_MAP */
__P((int, size_t, int, int, void **));
int (*db_open) /* DB_FUNC_OPEN */
__P((const char *, int, ...));
ssize_t (*db_read) __P((int, void *, size_t)); /* DB_FUNC_READ */
void *(*db_realloc) __P((void *, size_t)); /* DB_FUNC_REALLOC */
int (*db_seek) /* DB_FUNC_SEEK */
__P((int, size_t, db_pgno_t, u_long, int));
int (*db_sleep) __P((u_long, u_long)); /* DB_FUNC_SLEEP */
char *(*db_strdup) __P((const char *)); /* DB_FUNC_STRDUP */
int (*db_unlink) __P((const char *)); /* DB_FUNC_UNLINK */
int (*db_unmap) __P((void *, size_t)); /* DB_FUNC_UNMAP */
ssize_t (*db_write) /* DB_FUNC_WRITE */
__P((int, const void *, size_t));
int (*db_yield) __P((void)); /* DB_FUNC_YIELD */
};
extern struct __db_jumptab __db_jump;
/*
* Names used by DB to call through the jump table.
*
* The naming scheme goes like this: if the functionality the application can
* replace is the same as the DB functionality, e.g., calloc, or dirlist, then
* we use the name __db_XXX, and the application is expected to replace the
* complete functionality, which may or may not map directly to an ANSI C or
* POSIX 1003.1 interface. If the functionality that the aplication replaces
* only underlies what the DB os directory exports to other parts of DB, e.g.,
* read, then the name __os_XXX is used, and the application can only replace
* the underlying functionality. Under most circumstances, the os directory
* part of DB is the only code that should use the __os_XXX names, all other
* parts of DB should be calling __db_XXX functions.
*/
#define __os_close __db_jump.db_close /* __db_close is a wrapper. */
#define __db_dirfree __db_jump.db_dirfree
#define __db_dirlist __db_jump.db_dirlist
#define __db_exists __db_jump.db_exists
#define __db_free __db_jump.db_free
#define __os_fsync __db_jump.db_fsync /* __db_fsync is a wrapper. */
#define __db_ioinfo __db_jump.db_ioinfo
#define __db_map __db_jump.db_map
#define __os_open __db_jump.db_open /* __db_open is a wrapper. */
#define __os_read __db_jump.db_read /* __db_read is a wrapper. */
#define __db_seek __db_jump.db_seek
#define __db_sleep __db_jump.db_sleep
#define __db_strdup __db_jump.db_strdup
#define __os_unlink __db_jump.db_unlink /* __db_unlink is a wrapper. */
#define __db_unmap __db_jump.db_unmap
#define __os_write __db_jump.db_write /* __db_write is a wrapper. */
#define __db_yield __db_jump.db_yield
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