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dbwrap: add comment describing behaviour of dbwrap_change_uint32_atomic().

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Michael
(This used to be commit 7edfb54c865ddcfd5cdcc8c2184b96aaac2d2ec0)
This commit is contained in:
Michael Adam 2008-08-05 23:13:06 +02:00
parent b59ed9c05f
commit 149e1ae25a
1 changed files with 7 additions and 0 deletions
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7
source3/lib/dbwrap_util.c
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@ -98,6 +98,13 @@ bool dbwrap_store_uint32(struct db_context *db, const char *keystr, uint32_t v)
return NT_STATUS_IS_OK(status) ? 0 : -1;
}
/**
* Atomic unsigned integer change (addition):
*
* if value does not exist yet in the db, use *oldval as initial old value.
* return old value in *oldval.
* store *oldval + change_val to db.
*/
uint32_t dbwrap_change_uint32_atomic(struct db_context *db, const char *keystr,
uint32_t *oldval, uint32_t change_val)
{