From 957f1ba3fc1d737887029ff1787fc6bea94de00b Mon Sep 17 00:00:00 2001 From: Austin Clements Date: Sat, 29 Jan 2011 11:25:24 -0500 Subject: lib: Add notmuch_database_{begin,end}_atomic. These operations translate into non-flushed Xapian transactions, allowing arbitrary groups of database operations to be performed atomically. --- lib/notmuch.h | 30 ++++++++++++++++++++++++++++++ 1 file changed, 30 insertions(+) (limited to 'lib/notmuch.h') diff --git a/lib/notmuch.h b/lib/notmuch.h index 974be8d1..0c306bb5 100644 --- a/lib/notmuch.h +++ b/lib/notmuch.h @@ -214,6 +214,36 @@ notmuch_database_upgrade (notmuch_database_t *database, double progress), void *closure); +/* Begin an atomic database operation. + * + * Any modifications performed between a successful begin and a + * notmuch_database_end_atomic will be applied to the database + * atomically. Note that, unlike a typical database transaction, this + * only ensures atomicity, not durability; neither begin nor end + * necessarily flush modifications to disk. + * + * Return value: + * + * NOTMUCH_STATUS_SUCCESS: Successfully entered atomic section. + * + * NOTMUCH_STATUS_XAPIAN_EXCEPTION: A Xapian exception occurred; + * atomic section not entered. + */ +notmuch_status_t +notmuch_database_begin_atomic (notmuch_database_t *notmuch); + +/* Indicate the end of an atomic database operation. + * + * Return value: + * + * NOTMUCH_STATUS_SUCCESS: Successfully completed atomic section. + * + * NOTMUCH_STATUS_XAPIAN_EXCEPTION: A Xapian exception occurred; + * atomic section not ended. + */ +notmuch_status_t +notmuch_database_end_atomic (notmuch_database_t *notmuch); + /* Retrieve a directory object from the database for 'path'. * * Here, 'path' should be a path relative to the path of 'database' -- cgit v1.2.3