70 lines
3.1 KiB
C
70 lines
3.1 KiB
C
/*-
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* See the file LICENSE for redistribution information.
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*
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* Copyright (c) 1997, 1998
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* Sleepycat Software. All rights reserved.
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*
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* @(#)os_func.h 10.8 (Sleepycat) 4/19/98
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*/
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/* Calls which can be replaced by the application. */
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struct __db_jumptab {
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int (*j_close) __P((int)); /* DB_FUNC_CLOSE */
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void (*j_dirfree) __P((char **, int)); /* DB_FUNC_DIRFREE */
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int (*j_dirlist) /* DB_FUNC_DIRLIST */
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__P((const char *, char ***, int *));
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int (*j_exists) /* DB_FUNC_EXISTS */
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__P((const char *, int *));
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void (*j_free) __P((void *)); /* DB_FUNC_FREE */
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int (*j_fsync) __P((int)); /* DB_FUNC_FSYNC */
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int (*j_ioinfo) __P((const char *, /* DB_FUNC_IOINFO */
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int, u_int32_t *, u_int32_t *, u_int32_t *));
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void *(*j_malloc) __P((size_t)); /* DB_FUNC_MALLOC */
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int (*j_map) /* DB_FUNC_MAP */
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__P((char *, int, size_t, int, int, int, void **));
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int (*j_open) /* DB_FUNC_OPEN */
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__P((const char *, int, ...));
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ssize_t (*j_read) __P((int, void *, size_t)); /* DB_FUNC_READ */
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void *(*j_realloc) __P((void *, size_t)); /* DB_FUNC_REALLOC */
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int (*j_runlink) __P((char *)); /* DB_FUNC_RUNLINK */
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int (*j_seek) /* DB_FUNC_SEEK */
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__P((int, size_t, db_pgno_t, u_int32_t, int, int));
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int (*j_sleep) __P((u_long, u_long)); /* DB_FUNC_SLEEP */
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int (*j_unlink) __P((const char *)); /* DB_FUNC_UNLINK */
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int (*j_unmap) __P((void *, size_t)); /* DB_FUNC_UNMAP */
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ssize_t (*j_write) /* DB_FUNC_WRITE */
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__P((int, const void *, size_t));
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int (*j_yield) __P((void)); /* DB_FUNC_YIELD */
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};
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extern struct __db_jumptab __db_jump;
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/*
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* Names used by DB to call through the jump table.
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*
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* The naming scheme goes like this: if the functionality the application can
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* replace is the same as the DB functionality, e.g., malloc, or dirlist, then
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* we use the name __db_XXX, and the application is expected to replace the
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* complete functionality, which may or may not map directly to an ANSI C or
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* POSIX 1003.1 interface. If the functionality that the aplication replaces
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* only underlies what the DB os directory exports to other parts of DB, e.g.,
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* read, then the name __os_XXX is used, and the application can only replace
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* the underlying functionality. Under most circumstances, the os directory
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* part of DB is the only code that should use the __os_XXX names, all other
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* parts of DB should be calling __db_XXX functions.
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*/
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#define __os_close __db_jump.j_close /* __db_close is a wrapper. */
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#define __db_dirfree __db_jump.j_dirfree
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#define __db_dirlist __db_jump.j_dirlist
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#define __db_exists __db_jump.j_exists
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#define __db_free __db_jump.j_free
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#define __os_fsync __db_jump.j_fsync /* __db_fsync is a wrapper. */
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#define __db_ioinfo __db_jump.j_ioinfo
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#define __os_open __db_jump.j_open /* __db_open is a wrapper. */
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#define __os_read __db_jump.j_read /* __db_read is a wrapper. */
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#define __db_seek __db_jump.j_seek
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#define __db_sleep __db_jump.j_sleep
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#define __os_unlink __db_jump.j_unlink /* __db_unlink is a wrapper. */
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#define __os_write __db_jump.j_write /* __db_write is a wrapper. */
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#define __db_yield __db_jump.j_yield
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