rec_db

linux 下的源代码分析阅读器 red hat公司新版

			    &argp->pgno, DB_MPOOL_CREATE, &pagep)) != 0)
				goto out;
		} else {
			*lsnp = argp->prev_lsn;
			ret = 0;
			goto out;
		}

	modified = 0;
	cmp_n = log_compare(lsnp, &LSN(pagep));

	/*
	 * Use this when there is something like "pagelsn" in the argp
	 * structure.  Sometimes, you might need to compare meta-data
	 * lsn's instead.
	 *
	 * cmp_p = log_compare(&LSN(pagep), argp->pagelsn);
	 */
	if (cmp_p == 0 && DB_REDO(op)) {
		/* Need to redo update described. */
		modified = 1;
	} else if (cmp_n == 0 && !DB_REDO(op)) {
		/* Need to undo update described. */
		modified = 1;
	}
	if (ret = mpf->put(mpf, pagep, modified ? DB_MPOOL_DIRTY : 0))
		goto out;

	*lsnp = argp->prev_lsn;
	ret = 0;

out:	REC_CLOSE;
}

/*
 * __db_pg_free_recover --
 *	Recovery function for pg_free.
 *
 * PUBLIC: int __db_pg_free_recover
 * PUBLIC:   __P((DB_ENV *, DBT *, DB_LSN *, db_recops, void *));
 */
int
__db_pg_free_recover(dbenv, dbtp, lsnp, op, info)
	DB_ENV *dbenv;
	DBT *dbtp;
	DB_LSN *lsnp;
	db_recops op;
	void *info;
{
	__db_pg_free_args *argp;
	DB *file_dbp;
	DBC *dbc;
	DB_MPOOLFILE *mpf;
	PAGE *pagep;
	int cmp_n, cmp_p, modified, ret;

	REC_PRINT(__db_pg_free_print);
	REC_INTRO(__db_pg_free_read, 1);

	if ((ret = mpf->get(mpf, &argp->pgno, 0, &pagep)) != 0)
		if (DB_REDO(op)) {
			if ((ret = mpf->get(mpf,
			    &argp->pgno, DB_MPOOL_CREATE, &pagep)) != 0)
				goto out;
		} else {
			*lsnp = argp->prev_lsn;
			ret = 0;
			goto out;
		}

	modified = 0;
	cmp_n = log_compare(lsnp, &LSN(pagep));

	/*
	 * Use this when there is something like "pagelsn" in the argp
	 * structure.  Sometimes, you might need to compare meta-data
	 * lsn's instead.
	 *
	 * cmp_p = log_compare(&LSN(pagep), argp->pagelsn);
	 */
	if (cmp_p == 0 && DB_REDO(op)) {
		/* Need to redo update described. */
		modified = 1;
	} else if (cmp_n == 0 && !DB_REDO(op)) {
		/* Need to undo update described. */
		modified = 1;
	}
	if (ret = mpf->put(mpf, pagep, modified ? DB_MPOOL_DIRTY : 0))
		goto out;

	*lsnp = argp->prev_lsn;
	ret = 0;

out:	REC_CLOSE;
}

/*
 * __db_cksum_recover --
 *	Recovery function for cksum.
 *
 * PUBLIC: int __db_cksum_recover
 * PUBLIC:   __P((DB_ENV *, DBT *, DB_LSN *, db_recops, void *));
 */
int
__db_cksum_recover(dbenv, dbtp, lsnp, op, info)
	DB_ENV *dbenv;
	DBT *dbtp;
	DB_LSN *lsnp;
	db_recops op;
	void *info;
{
	__db_cksum_args *argp;
	DB *file_dbp;
	DBC *dbc;
	DB_MPOOLFILE *mpf;
	PAGE *pagep;
	int cmp_n, cmp_p, modified, ret;

	REC_PRINT(__db_cksum_print);
	REC_INTRO(__db_cksum_read, 1);

	if ((ret = mpf->get(mpf, &argp->pgno, 0, &pagep)) != 0)
		if (DB_REDO(op)) {
			if ((ret = mpf->get(mpf,
			    &argp->pgno, DB_MPOOL_CREATE, &pagep)) != 0)
				goto out;
		} else {
			*lsnp = argp->prev_lsn;
			ret = 0;
			goto out;
		}

	modified = 0;
	cmp_n = log_compare(lsnp, &LSN(pagep));

	/*
	 * Use this when there is something like "pagelsn" in the argp
	 * structure.  Sometimes, you might need to compare meta-data
	 * lsn's instead.
	 *
	 * cmp_p = log_compare(&LSN(pagep), argp->pagelsn);
	 */
	if (cmp_p == 0 && DB_REDO(op)) {
		/* Need to redo update described. */
		modified = 1;
	} else if (cmp_n == 0 && !DB_REDO(op)) {
		/* Need to undo update described. */
		modified = 1;
	}
	if (ret = mpf->put(mpf, pagep, modified ? DB_MPOOL_DIRTY : 0))
		goto out;

	*lsnp = argp->prev_lsn;
	ret = 0;

out:	REC_CLOSE;
}

/*
 * __db_pg_freedata_recover --
 *	Recovery function for pg_freedata.
 *
 * PUBLIC: int __db_pg_freedata_recover
 * PUBLIC:   __P((DB_ENV *, DBT *, DB_LSN *, db_recops, void *));
 */
int
__db_pg_freedata_recover(dbenv, dbtp, lsnp, op, info)
	DB_ENV *dbenv;
	DBT *dbtp;
	DB_LSN *lsnp;
	db_recops op;
	void *info;
{
	__db_pg_freedata_args *argp;
	DB *file_dbp;
	DBC *dbc;
	DB_MPOOLFILE *mpf;
	PAGE *pagep;
	int cmp_n, cmp_p, modified, ret;

	REC_PRINT(__db_pg_freedata_print);
	REC_INTRO(__db_pg_freedata_read, 1);

	if ((ret = mpf->get(mpf, &argp->pgno, 0, &pagep)) != 0)
		if (DB_REDO(op)) {
			if ((ret = mpf->get(mpf,
			    &argp->pgno, DB_MPOOL_CREATE, &pagep)) != 0)
				goto out;
		} else {
			*lsnp = argp->prev_lsn;
			ret = 0;
			goto out;
		}

	modified = 0;
	cmp_n = log_compare(lsnp, &LSN(pagep));

	/*
	 * Use this when there is something like "pagelsn" in the argp
	 * structure.  Sometimes, you might need to compare meta-data
	 * lsn's instead.
	 *
	 * cmp_p = log_compare(&LSN(pagep), argp->pagelsn);
	 */
	if (cmp_p == 0 && DB_REDO(op)) {
		/* Need to redo update described. */
		modified = 1;
	} else if (cmp_n == 0 && !DB_REDO(op)) {
		/* Need to undo update described. */
		modified = 1;
	}
	if (ret = mpf->put(mpf, pagep, modified ? DB_MPOOL_DIRTY : 0))
		goto out;

	*lsnp = argp->prev_lsn;
	ret = 0;

out:	REC_CLOSE;
}

/*
 * __db_pg_freedata_recover --
 *	Recovery function for pg_freedata.
 *
 * PUBLIC: int __db_pg_freedata_recover
 * PUBLIC:   __P((DB_ENV *, DBT *, DB_LSN *, db_recops, void *));
 */
int
__db_pg_freedata_recover(dbenv, dbtp, lsnp, op, info)
	DB_ENV *dbenv;
	DBT *dbtp;
	DB_LSN *lsnp;
	db_recops op;
	void *info;
{
	__db_pg_freedata_args *argp;
	DB *file_dbp;
	DBC *dbc;
	DB_MPOOLFILE *mpf;
	PAGE *pagep;
	int cmp_n, cmp_p, modified, ret;

	REC_PRINT(__db_pg_freedata_print);
	REC_INTRO(__db_pg_freedata_read, 1);

	if ((ret = mpf->get(mpf, &argp->pgno, 0, &pagep)) != 0)
		if (DB_REDO(op)) {
			if ((ret = mpf->get(mpf,
			    &argp->pgno, DB_MPOOL_CREATE, &pagep)) != 0)
				goto out;
		} else {
			*lsnp = argp->prev_lsn;
			ret = 0;
			goto out;
		}

	modified = 0;
	cmp_n = log_compare(lsnp, &LSN(pagep));

	/*
	 * Use this when there is something like "pagelsn" in the argp
	 * structure.  Sometimes, you might need to compare meta-data
	 * lsn's instead.
	 *
	 * cmp_p = log_compare(&LSN(pagep), argp->pagelsn);
	 */
	if (cmp_p == 0 && DB_REDO(op)) {
		/* Need to redo update described. */
		modified = 1;
	} else if (cmp_n == 0 && !DB_REDO(op)) {
		/* Need to undo update described. */
		modified = 1;
	}
	if (ret = mpf->put(mpf, pagep, modified ? DB_MPOOL_DIRTY : 0))
		goto out;

	*lsnp = argp->prev_lsn;
	ret = 0;

out:	REC_CLOSE;
}

/*
 * __db_pg_prepare_recover --
 *	Recovery function for pg_prepare.
 *
 * PUBLIC: int __db_pg_prepare_recover
 * PUBLIC:   __P((DB_ENV *, DBT *, DB_LSN *, db_recops, void *));
 */
int
__db_pg_prepare_recover(dbenv, dbtp, lsnp, op, info)
	DB_ENV *dbenv;
	DBT *dbtp;
	DB_LSN *lsnp;
	db_recops op;
	void *info;
{
	__db_pg_prepare_args *argp;
	DB *file_dbp;
	DBC *dbc;
	DB_MPOOLFILE *mpf;
	PAGE *pagep;
	int cmp_n, cmp_p, modified, ret;

	REC_PRINT(__db_pg_prepare_print);
	REC_INTRO(__db_pg_prepare_read, 1);

	if ((ret = mpf->get(mpf, &argp->pgno, 0, &pagep)) != 0)
		if (DB_REDO(op)) {
			if ((ret = mpf->get(mpf,
			    &argp->pgno, DB_MPOOL_CREATE, &pagep)) != 0)
				goto out;
		} else {
			*lsnp = argp->prev_lsn;
			ret = 0;
			goto out;
		}

	modified = 0;
	cmp_n = log_compare(lsnp, &LSN(pagep));

	/*
	 * Use this when there is something like "pagelsn" in the argp
	 * structure.  Sometimes, you might need to compare meta-data
	 * lsn's instead.
	 *
	 * cmp_p = log_compare(&LSN(pagep), argp->pagelsn);
	 */
	if (cmp_p == 0 && DB_REDO(op)) {
		/* Need to redo update described. */
		modified = 1;
	} else if (cmp_n == 0 && !DB_REDO(op)) {
		/* Need to undo update described. */
		modified = 1;
	}
	if (ret = mpf->put(mpf, pagep, modified ? DB_MPOOL_DIRTY : 0))
		goto out;

	*lsnp = argp->prev_lsn;
	ret = 0;

out:	REC_CLOSE;
}

/*
 * __db_pg_new_recover --
 *	Recovery function for pg_new.
 *
 * PUBLIC: int __db_pg_new_recover
 * PUBLIC:   __P((DB_ENV *, DBT *, DB_LSN *, db_recops, void *));
 */
int
__db_pg_new_recover(dbenv, dbtp, lsnp, op, info)
	DB_ENV *dbenv;
	DBT *dbtp;
	DB_LSN *lsnp;
	db_recops op;
	void *info;
{
	__db_pg_new_args *argp;
	DB *file_dbp;
	DBC *dbc;
	DB_MPOOLFILE *mpf;
	PAGE *pagep;
	int cmp_n, cmp_p, modified, ret;

	REC_PRINT(__db_pg_new_print);
	REC_INTRO(__db_pg_new_read, 1);

	if ((ret = mpf->get(mpf, &argp->pgno, 0, &pagep)) != 0)
		if (DB_REDO(op)) {
			if ((ret = mpf->get(mpf,
			    &argp->pgno, DB_MPOOL_CREATE, &pagep)) != 0)
				goto out;
		} else {
			*lsnp = argp->prev_lsn;
			ret = 0;
			goto out;
		}

	modified = 0;
	cmp_n = log_compare(lsnp, &LSN(pagep));

	/*
	 * Use this when there is something like "pagelsn" in the argp
	 * structure.  Sometimes, you might need to compare meta-data
	 * lsn's instead.
	 *
	 * cmp_p = log_compare(&LSN(pagep), argp->pagelsn);
	 */
	if (cmp_p == 0 && DB_REDO(op)) {
		/* Need to redo update described. */
		modified = 1;
	} else if (cmp_n == 0 && !DB_REDO(op)) {
		/* Need to undo update described. */
		modified = 1;
	}
	if (ret = mpf->put(mpf, pagep, modified ? DB_MPOOL_DIRTY : 0))
		goto out;

	*lsnp = argp->prev_lsn;
	ret = 0;

out:	REC_CLOSE;
}

/*
 * __db_pg_init_recover --
 *	Recovery function for pg_init.
 *
 * PUBLIC: int __db_pg_init_recover
 * PUBLIC:   __P((DB_ENV *, DBT *, DB_LSN *, db_recops, void *));
 */
int
__db_pg_init_recover(dbenv, dbtp, lsnp, op, info)
	DB_ENV *dbenv;
	DBT *dbtp;
	DB_LSN *lsnp;
	db_recops op;
	void *info;
{
	__db_pg_init_args *argp;
	DB *file_dbp;
	DBC *dbc;
	DB_MPOOLFILE *mpf;
	PAGE *pagep;
	int cmp_n, cmp_p, modified, ret;

	REC_PRINT(__db_pg_init_print);
	REC_INTRO(__db_pg_init_read, 1);

	if ((ret = mpf->get(mpf, &argp->pgno, 0, &pagep)) != 0)
		if (DB_REDO(op)) {
			if ((ret = mpf->get(mpf,
			    &argp->pgno, DB_MPOOL_CREATE, &pagep)) != 0)
				goto out;
		} else {
			*lsnp = argp->prev_lsn;
			ret = 0;
			goto out;
		}

	modified = 0;
	cmp_n = log_compare(lsnp, &LSN(pagep));

	/*
	 * Use this when there is something like "pagelsn" in the argp
	 * structure.  Sometimes, you might need to compare meta-data
	 * lsn's instead.
	 *
	 * cmp_p = log_compare(&LSN(pagep), argp->pagelsn);
	 */
	if (cmp_p == 0 && DB_REDO(op)) {
		/* Need to redo update described. */
		modified = 1;
	} else if (cmp_n == 0 && !DB_REDO(op)) {
		/* Need to undo update described. */
		modified = 1;
	}
	if (ret = mpf->put(mpf, pagep, modified ? DB_MPOOL_DIRTY : 0))
		goto out;

	*lsnp = argp->prev_lsn;
	ret = 0;

out:	REC_CLOSE;
}

/*
 * __db_pg_sort_recover --
 *	Recovery function for pg_sort.
 *
 * PUBLIC: int __db_pg_sort_recover
 * PUBLIC:   __P((DB_ENV *, DBT *, DB_LSN *, db_recops, void *));
 */
int
__db_pg_sort_recover(dbenv, dbtp, lsnp, op, info)
	DB_ENV *dbenv;
	DBT *dbtp;
	DB_LSN *lsnp;
	db_recops op;
	void *info;
{
	__db_pg_sort_args *argp;
	DB *file_dbp;
	DBC *dbc;
	DB_MPOOLFILE *mpf;
	PAGE *pagep;
	int cmp_n, cmp_p, modified, ret;

	REC_PRINT(__db_pg_sort_print);
	REC_INTRO(__db_pg_sort_read, 1);

	if ((ret = mpf->get(mpf, &argp->pgno, 0, &pagep)) != 0)
		if (DB_REDO(op)) {
			if ((ret = mpf->get(mpf,
			    &argp->pgno, DB_MPOOL_CREATE, &pagep)) != 0)
				goto out;
		} else {
			*lsnp = argp->prev_lsn;
			ret = 0;
			goto out;
		}

	modified = 0;
	cmp_n = log_compare(lsnp, &LSN(pagep));

	/*
	 * Use this when there is something like "pagelsn" in the argp
	 * structure.  Sometimes, you might need to compare meta-data
	 * lsn's instead.
	 *
	 * cmp_p = log_compare(&LSN(pagep), argp->pagelsn);
	 */
	if (cmp_p == 0 && DB_REDO(op)) {
		/* Need to redo update described. */
		modified = 1;
	} else if (cmp_n == 0 && !DB_REDO(op)) {
		/* Need to undo update described. */
		modified = 1;
	}
	if (ret = mpf->put(mpf, pagep, modified ? DB_MPOOL_DIRTY : 0))
		goto out;

	*lsnp = argp->prev_lsn;
	ret = 0;

out:	REC_CLOSE;
}