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Diffstat (limited to 'tools/xenstore/xenstored_transaction.h')
-rw-r--r-- | tools/xenstore/xenstored_transaction.h | 50 |
1 files changed, 50 insertions, 0 deletions
diff --git a/tools/xenstore/xenstored_transaction.h b/tools/xenstore/xenstored_transaction.h new file mode 100644 index 0000000000..a21bccad72 --- /dev/null +++ b/tools/xenstore/xenstored_transaction.h @@ -0,0 +1,50 @@ +/* + Transaction code for Xen Store Daemon. + Copyright (C) 2005 Rusty Russell IBM Corporation + + This program is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 2 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program; if not, write to the Free Software + Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA +*/ +#ifndef _XENSTORED_TRANSACTION_H +#define _XENSTORED_TRANSACTION_H +#include "xenstored_core.h" + +struct transaction; + +bool do_transaction_start(struct connection *conn, const char *node); +bool do_transaction_end(struct connection *conn, const char *arg); + +/* Is node covered by this transaction? */ +bool within_transaction(struct transaction *trans, const char *node); + +/* If a write op on this node blocked by another connections' transaction, + * mark conn, setup transaction timeout and return true. + */ +bool transaction_block(struct connection *conn, const char *node); + +/* Return transaction which covers this node. */ +struct transaction *transaction_covering_node(const char *node); + +/* Return directory of node within transaction t. */ +char *node_dir_inside_transaction(struct transaction *t, const char *node); + +/* This node was changed: can fail and longjmp. */ +void add_change_node(struct transaction *trans, const char *node); + +/* Get shortest timeout: leave tv unset if none. */ +void shortest_transaction_timeout(struct timeval *tv); + +/* Have any transactions timed out yet? */ +void check_transaction_timeout(void); +#endif /* _XENSTORED_TRANSACTION_H */ |