db_server_proc.c.in

mysql-5.0.22.tar.gz源码包

 * PUBLIC:      __db_join_reply *));
 */
void
__db_join_proc(dbpcl_id, curs, curslen,
		flags, replyp)
	long dbpcl_id;
	u_int32_t * curs;
	u_int32_t curslen;
	u_int32_t flags;
	__db_join_reply *replyp;
/* END __db_join_proc */
{
	DB *dbp;
	DBC **jcurs, **c;
	DBC *dbc;
	ct_entry *dbc_ctp, *ctp, *dbp_ctp;
	size_t size;
	u_int32_t *cl, i;
	int ret;

	ACTIVATE_CTP(dbp_ctp, dbpcl_id, CT_DB);
	dbp = (DB *)dbp_ctp->ct_anyp;

	dbc_ctp = new_ct_ent(&replyp->status);
	if (dbc_ctp == NULL)
		return;

	size = (curslen + 1) * sizeof(DBC *);
	if ((ret = __os_calloc(dbp->dbenv,
	    curslen + 1, sizeof(DBC *), &jcurs)) != 0) {
		replyp->status = ret;
		__dbclear_ctp(dbc_ctp);
		return;
	}
	/*
	 * If our curslist has a parent txn, we need to use it too
	 * for the activity timeout.  All cursors must be part of
	 * the same transaction, so just check the first.
	 */
	ctp = get_tableent(*curs);
	DB_ASSERT(ctp->ct_type == CT_CURSOR);
	/*
	 * If we are using a transaction, set the join activity timer
	 * to point to the parent transaction.
	 */
	if (ctp->ct_activep != &ctp->ct_active)
		dbc_ctp->ct_activep = ctp->ct_activep;
	for (i = 0, cl = curs, c = jcurs; i < curslen; i++, cl++, c++) {
		ctp = get_tableent(*cl);
		if (ctp == NULL) {
			replyp->status = DB_NOSERVER_ID;
			goto out;
		}
		/*
		 * If we are using a txn, the join cursor points to the
		 * transaction timeout.  If we are not using a transaction,
		 * then all the curslist cursors must point to the join
		 * cursor's timeout so that we do not timeout any of the
		 * curlist cursors while the join cursor is active.
		 * Change the type of the curslist ctps to CT_JOIN so that
		 * we know they are part of a join list and we can distinguish
		 * them and later restore them when the join cursor is closed.
		 */
		DB_ASSERT(ctp->ct_type == CT_CURSOR);
		ctp->ct_type |= CT_JOIN;
		ctp->ct_origp = ctp->ct_activep;
		/*
		 * Setting this to the ct_active field of the dbc_ctp is
		 * really just a way to distinguish which join dbc this
		 * cursor is part of.  The ct_activep of this cursor is
		 * not used at all during its lifetime as part of a join
		 * cursor.
		 */
		ctp->ct_activep = &dbc_ctp->ct_active;
		*c = ctp->ct_dbc;
	}
	*c = NULL;
	if ((ret = dbp->join(dbp, jcurs, &dbc, flags)) == 0) {
		dbc_ctp->ct_dbc = dbc;
		dbc_ctp->ct_type = (CT_JOINCUR | CT_CURSOR);
		dbc_ctp->ct_parent = dbp_ctp;
		dbc_ctp->ct_envparent = dbp_ctp->ct_envparent;
		__dbsrv_settimeout(dbc_ctp, dbp_ctp->ct_envparent->ct_timeout);
		__dbsrv_active(dbc_ctp);
		replyp->dbcidcl_id = dbc_ctp->ct_id;
	} else {
		__dbclear_ctp(dbc_ctp);
		/*
		 * If we get an error, undo what we did above to any cursors.
		 */
		for (cl = curs; *cl != 0; cl++) {
			ctp = get_tableent(*cl);
			ctp->ct_type = CT_CURSOR;
			ctp->ct_activep = ctp->ct_origp;
		}
	}

	replyp->status = ret;
out:
	__os_free(dbp->dbenv, jcurs);
	return;
}

/* BEGIN __dbc_close_proc */
/*
 * PUBLIC: void __dbc_close_proc __P((long, __dbc_close_reply *));
 */
void
__dbc_close_proc(dbccl_id, replyp)
	long dbccl_id;
	__dbc_close_reply *replyp;
/* END __dbc_close_proc */
{
	ct_entry *dbc_ctp;

	ACTIVATE_CTP(dbc_ctp, dbccl_id, CT_CURSOR);
	replyp->status = __dbc_close_int(dbc_ctp);
	return;
}

/* BEGIN __dbc_count_proc */
/*
 * PUBLIC: void __dbc_count_proc __P((long, u_int32_t, __dbc_count_reply *));
 */
void
__dbc_count_proc(dbccl_id, flags, replyp)
	long dbccl_id;
	u_int32_t flags;
	__dbc_count_reply *replyp;
/* END __dbc_count_proc */
{
	DBC *dbc;
	ct_entry *dbc_ctp;
	db_recno_t num;
	int ret;

	ACTIVATE_CTP(dbc_ctp, dbccl_id, CT_CURSOR);
	dbc = (DBC *)dbc_ctp->ct_anyp;

	ret = dbc->c_count(dbc, &num, flags);
	replyp->status = ret;
	if (ret == 0)
		replyp->dupcount = num;
	return;
}

/* BEGIN __dbc_del_proc */
/*
 * PUBLIC: void __dbc_del_proc __P((long, u_int32_t, __dbc_del_reply *));
 */
void
__dbc_del_proc(dbccl_id, flags, replyp)
	long dbccl_id;
	u_int32_t flags;
	__dbc_del_reply *replyp;
/* END __dbc_del_proc */
{
	DBC *dbc;
	ct_entry *dbc_ctp;
	int ret;

	ACTIVATE_CTP(dbc_ctp, dbccl_id, CT_CURSOR);
	dbc = (DBC *)dbc_ctp->ct_anyp;

	ret = dbc->c_del(dbc, flags);

	replyp->status = ret;
	return;
}

/* BEGIN __dbc_dup_proc */
/*
 * PUBLIC: void __dbc_dup_proc __P((long, u_int32_t, __dbc_dup_reply *));
 */
void
__dbc_dup_proc(dbccl_id, flags, replyp)
	long dbccl_id;
	u_int32_t flags;
	__dbc_dup_reply *replyp;
/* END __dbc_dup_proc */
{
	DBC *dbc, *newdbc;
	ct_entry *dbc_ctp, *new_ctp;
	int ret;

	ACTIVATE_CTP(dbc_ctp, dbccl_id, CT_CURSOR);
	dbc = (DBC *)dbc_ctp->ct_anyp;

	new_ctp = new_ct_ent(&replyp->status);
	if (new_ctp == NULL)
		return;

	if ((ret = dbc->c_dup(dbc, &newdbc, flags)) == 0) {
		new_ctp->ct_dbc = newdbc;
		new_ctp->ct_type = CT_CURSOR;
		new_ctp->ct_parent = dbc_ctp->ct_parent;
		new_ctp->ct_envparent = dbc_ctp->ct_envparent;
		/*
		 * If our cursor has a parent txn, we need to use it too.
		 */
		if (dbc_ctp->ct_activep != &dbc_ctp->ct_active)
			new_ctp->ct_activep = dbc_ctp->ct_activep;
		__dbsrv_settimeout(new_ctp, dbc_ctp->ct_timeout);
		__dbsrv_active(new_ctp);
		replyp->dbcidcl_id = new_ctp->ct_id;
	} else
		__dbclear_ctp(new_ctp);

	replyp->status = ret;
	return;
}

/* BEGIN __dbc_get_proc */
/*
 * PUBLIC: void __dbc_get_proc __P((long, u_int32_t, u_int32_t, u_int32_t,
 * PUBLIC:      u_int32_t, void *, u_int32_t, u_int32_t, u_int32_t, u_int32_t, u_int32_t, void *,
 * PUBLIC:      u_int32_t, u_int32_t, __dbc_get_reply *, int *));
 */
void
__dbc_get_proc(dbccl_id, keydlen, keydoff,
		keyulen, keyflags, keydata, keysize,
		datadlen, datadoff, dataulen, dataflags,
		datadata, datasize, flags, replyp, freep)
	long dbccl_id;
	u_int32_t keydlen;
	u_int32_t keydoff;
	u_int32_t keyulen;
	u_int32_t keyflags;
	void *keydata;
	u_int32_t keysize;
	u_int32_t datadlen;
	u_int32_t datadoff;
	u_int32_t dataulen;
	u_int32_t dataflags;
	void *datadata;
	u_int32_t datasize;
	u_int32_t flags;
	__dbc_get_reply *replyp;
	int * freep;
/* END __dbc_get_proc */
{
	DBC *dbc;
	DBT key, data;
	DB_ENV *dbenv;
	ct_entry *dbc_ctp;
	int key_alloc, bulk_alloc, ret;

	ACTIVATE_CTP(dbc_ctp, dbccl_id, CT_CURSOR);
	dbc = (DBC *)dbc_ctp->ct_anyp;
	dbenv = dbc->dbp->dbenv;

	*freep = 0;
	bulk_alloc = 0;
	memset(&key, 0, sizeof(key));
	memset(&data, 0, sizeof(data));

	/* Set up key and data DBT */
	key.dlen = keydlen;
	key.ulen = keyulen;
	key.doff = keydoff;
	/*
	 * Ignore memory related flags on server.
	 */
	key.flags = DB_DBT_MALLOC;
	if (keyflags & DB_DBT_PARTIAL)
		key.flags |= DB_DBT_PARTIAL;
	key.size = keysize;
	key.data = keydata;

	data.dlen = datadlen;
	data.ulen = dataulen;
	data.doff = datadoff;
	data.size = datasize;
	data.data = datadata;
	if (flags & DB_MULTIPLE || flags & DB_MULTIPLE_KEY) {
		if (data.data == 0) {
			ret = __os_umalloc(dbenv, data.ulen, &data.data);
			if (ret != 0)
				goto err;
			bulk_alloc = 1;
		}
		data.flags |= DB_DBT_USERMEM;
	} else
		data.flags |= DB_DBT_MALLOC;
	if (dataflags & DB_DBT_PARTIAL)
		data.flags |= DB_DBT_PARTIAL;

	/* Got all our stuff, now do the get */
	ret = dbc->c_get(dbc, &key, &data, flags);

	/*
	 * Otherwise just status.
	 */
	if (ret == 0) {
		/*
		 * XXX
		 * We need to xdr_free whatever we are returning, next time.
		 * However, DB does not allocate a new key if one was given
		 * and we'd be free'ing up space allocated in the request.
		 * So, allocate a new key/data pointer if it is the same one
		 * as in the request.
		 */
		*freep = 1;
		/*
		 * Key
		 */
		key_alloc = 0;
		if (key.data == keydata) {
			ret = __os_umalloc(dbenv, key.size,
			    &replyp->keydata.keydata_val);
			if (ret != 0) {
				__os_ufree(dbenv, key.data);
				__os_ufree(dbenv, data.data);
				goto err;
			}
			key_alloc = 1;
			memcpy(replyp->keydata.keydata_val, key.data, key.size);
		} else
			replyp->keydata.keydata_val = key.data;

		replyp->keydata.keydata_len = key.size;

		/*
		 * Data
		 */
		if (data.data == datadata) {
			ret = __os_umalloc(dbenv, data.size,
			    &replyp->datadata.datadata_val);
			if (ret != 0) {
				__os_ufree(dbenv, key.data);
				__os_ufree(dbenv, data.data);
				if (key_alloc)
					__os_ufree(dbenv, replyp->keydata.keydata_val);
				goto err;
			}
			memcpy(replyp->datadata.datadata_val, data.data,
			    data.size);
		} else
			replyp->datadata.datadata_val = data.data;
		replyp->datadata.datadata_len = data.size;
	} else {
err:		replyp->keydata.keydata_val = NULL;
		replyp->keydata.keydata_len = 0;
		replyp->datadata.datadata_val = NULL;
		replyp->datadata.datadata_len = 0;
		*freep = 0;
		if (bulk_alloc)
			__os_ufree(dbenv, data.data);
	}
	replyp->status = ret;
	return;
}

/* BEGIN __dbc_pget_proc */
/*
 * PUBLIC: void __dbc_pget_proc __P((long, u_int32_t, u_int32_t, u_int32_t,
 * PUBLIC:      u_int32_t, void *, u_int32_t, u_int32_t, u_int32_t, u_int32_t, u_int32_t, void *,
 * PUBLIC:      u_int32_t, u_int32_t, u_int32_t, u_int32_t, u_int32_t, void *, u_int32_t,
 * PUBLIC:      u_int32_t, __dbc_pget_reply *, int *));
 */
void
__dbc_pget_proc(dbccl_id, skeydlen, skeydoff,
		skeyulen, skeyflags, skeydata, skeysize,
		pkeydlen, pkeydoff, pkeyulen, pkeyflags,
		pkeydata, pkeysize, datadlen, datadoff,
		dataulen, dataflags, datadata, datasize,
		flags, replyp, freep)
	long dbccl_id;
	u_int32_t skeydlen;
	u_int32_t skeydoff;
	u_int32_t skeyulen;
	u_int32_t skeyflags;
	void *skeydata;
	u_int32_t skeysize;
	u_int32_t pkeydlen;
	u_int32_t pkeydoff;
	u_int32_t pkeyulen;
	u_int32_t pkeyflags;
	void *pkeydata;
	u_int32_t pkeysize;
	u_int32_t datadlen;
	u_int32_t datadoff;
	u_int32_t dataulen;
	u_int32_t dataflags;
	void *datadata;
	u_int32_t datasize;
	u_int32_t flags;
	__dbc_pget_reply *replyp;
	int * freep;
/* END __dbc_pget_proc */
{
	DBC *dbc;
	DBT skey, pkey, data;
	DB_ENV *dbenv;
	ct_entry *dbc_ctp;
	int key_alloc, ret;

	ACTIVATE_CTP(dbc_ctp, dbccl_id, CT_CURSOR);
	dbc = (DBC *)dbc_ctp->ct_anyp;
	dbenv = dbc->dbp->dbenv;

	*freep = 0;
	memset(&skey, 0, sizeof(skey));
	memset(&pkey, 0, sizeof(pkey));
	memset(&data, 0, sizeof(data));

	/*
	 * Ignore memory related flags on server.
	 */
	/* Set up key and data DBT */
	skey.flags = DB_DBT_MALLOC;
	skey.dlen = skeydlen;
	skey.ulen = skeyulen;
	skey.doff = skeydoff;
	if (skeyflags & DB_DBT_PARTIAL)
		skey.flags |= DB_DBT_PARTIAL;
	skey.size = skeysize;
	skey.data = skeydata;

	pkey.flags = DB_DBT_MALLOC;
	pkey.dlen = pkeydlen;
	pkey.ulen = pkeyulen;
	pkey.doff = pkeydoff;
	if (pkeyflags & DB_DBT_PARTIAL)
		pkey.flags |= DB_DBT_PARTIAL;
	pkey.size = pkeysize;
	pkey.data = pkeydata;

	data.flags = DB_DBT_MALLOC;
	data.dlen = datadlen;
	data.ulen = dataulen;
	data.doff = datadoff;
	if (dataflags & DB_DBT_PARTIAL)
		data.flags |= DB_DBT_PARTIAL;
	data.size = datasize;
	data.data = datadata;

	/* Got all our stuff, now do the get */
	ret = dbc->c_pget(dbc, &skey, &pkey, &data, flags);
	/*
	 * Otherwise just status.
	 */
	if (ret == 0) {
		/*
		 * XXX
		 * We need to xdr_free whatever we are returning, next time.
		 * However, DB does not allocate a new key if one was given
		 * and we'd be free'ing up space allocated in the request.
		 * So, allocate a new key/data pointer if it is the same one
		 * as in the request.
		 */
		*freep = 1;
		/*
		 * Key
		 */
		key_alloc = 0;
		if (skey.data == skeydata) {
			ret = __os_umalloc(dbenv,
			    skey.size, &replyp->skeydata.skeydata_val);
			if (ret != 0) {
				__os_ufree(dbenv, skey.data);
				__os_ufree(dbenv, pkey.data);
				__os_ufree(dbenv, data.data);
				goto err;
			}
			key_alloc = 1;
			memcpy(replyp->skeydata.skeydata_val, skey.data,
			    skey.size);
		} else
			replyp->skeydata.skeydata_val = skey.data;
		replyp->skeydata.skeydata_len = skey.size;

		/*
		 * Primary key
		 */
		if (pkey.data == pkeydata) {
			ret = __os_umalloc(dbenv,
			     pkey.size, &replyp->pkeydata.pkeydata_val);
			if (ret != 0) {
				__os_ufree(dbenv, skey.data);
				__os_ufree(dbenv, pkey.data);
				__os_ufree(dbenv, data.data);
				if (key_alloc)
					__os_ufree(dbenv,
					    replyp->skeydata.skeydata_val);
				goto err;
			}
			/*
			 * We can set it to 2, because they cannot send the
			 * pkey over without sending the skey over too.
			 * So if they did send a pkey, they must have sent
			 * the skey as well.
			 */
			key_alloc = 2;
			memcpy(replyp->pkeydata.pkeydata_val, pkey.data,
			    pkey.size);
		} else
			replyp->pkeydata.pkeydata_val = pkey.data;
		replyp->pkeydata.pkeydata_len = pkey.size;

		/*
		 * Data
		 */
		if (data.data == datadata) {
			ret = __os_umalloc(dbenv,
			     data.size, &replyp->datadata.datadata_val);
			if (ret != 0) {
				__os_ufree(dbenv, skey.data);
				__os_ufree(dbenv, pkey.data);
				__os_ufree(dbenv, data.data);
				/*
				 * If key_alloc is 1, just skey needs to be
				 * freed, if key_alloc is 2, both skey and pkey
				 * need to be freed.
				 */
				if (key_alloc--)
					__os_ufree(dbenv,
					    replyp->skeydata.skeydata_val);
				if (key_alloc)
					__os_ufree(dbenv,
					    replyp->pkeydata.pkeydata_val);
				goto err;
			}
			memcpy(replyp->datadata.datadata_val, data.data,
			    data.size);
		} else
			replyp->datadata.datadata_val = data.data;
		replyp->datadata.datadata_len = data.size;
	} else {
err:		replyp->skeydata.skeydata_val = NULL;
		replyp->skeydata.skeydata_len = 0;
		replyp->pkeydata.pkeydata_val = NULL;
		replyp->pkeydata.pkeydata_len = 0;
		replyp->datadata.datadata_val = NULL;
		replyp->datadata.datadata_len = 0;
		*freep = 0;
	}
	replyp->status = ret;
	return;
}

/* BEGIN __dbc_put_proc */
/*
 * PUBLIC: void __dbc_put_proc __P((long, u_int32_t, u_int32_t, u_int32_t,
 * PUBLIC:      u_int32_t, void *, u_int32_t, u_int32_t, u_int32_t, u_int32_t, u_int32_t, void *,
 * PUBLIC:      u_int32_t, u_int32_t, __dbc_put_reply *, int *));
 */
void
__dbc_put_proc(dbccl_id, keydlen, keydoff,
		keyulen, keyflags, keydata, keysize,
		datadlen, datadoff, dataulen, dataflags,
		datadata, datasize, flags, replyp, freep)
	long dbccl_id;
	u_int32_t keydlen;
	u_int32_t keydoff;
	u_int32_t keyulen;
	u_int32_t keyflags;
	void *keydata;
	u_int32_t keysize;
	u_int32_t datadlen;
	u_int32_t datadoff;
	u_int32_t dataulen;
	u_int32_t dataflags;
	void *datadata;
	u_int32_t datasize;
	u_int32_t flags;
	__dbc_put_reply *replyp;
	int * freep;
/* END __dbc_put_proc */
{
	DB *dbp;
	DBC *dbc;
	DBT key, data;
	ct_entry *dbc_ctp;
	int ret;

	ACTIVATE_CTP(dbc_ctp, dbccl_id, CT_CURSOR);
	dbc = (DBC *)dbc_ctp->ct_anyp;
	dbp = (DB *)dbc_ctp->ct_parent->ct_anyp;

	memset(&key, 0, sizeof(key));
	memset(&data, 0, sizeof(data));

	/* Set up key and data DBT */
	key.dlen = keydlen;
	key.ulen = keyulen;
	key.doff = keydoff;
	/*
	 * Ignore memory related flags on server.
	 */
	key.flags = 0;
	if (keyflags & DB_DBT_PARTIAL)
		key.flags |= DB_DBT_PARTIAL;
	key.size = keysize;
	key.data = keydata;

	data.dlen = datadlen;
	data.ulen = dataulen;
	data.doff = datadoff;
	data.flags = dataflags;
	data.size = datasize;
	data.data = datadata;

	/* Got all our stuff, now do the put */
	ret = dbc->c_put(dbc, &key, &data, flags);

	*freep = 0;
	if (ret == 0 && (flags == DB_AFTER || flags == DB_BEFORE) &&
	    dbp->type == DB_RECNO) {
		/*
		 * We need to xdr_free whatever we are returning, next time.
		 */
		replyp->keydata.keydata_val = key.data;
		replyp->keydata.keydata_len = key.size;
	} else {
		replyp->keydata.keydata_val = NULL;
		replyp->keydata.keydata_len = 0;
	}
	replyp->status = ret;
	return;
}
#endif /* HAVE_RPC */