diff options
| author | Henrik Nord <[email protected]> | 2011-05-17 11:57:11 +0200 |
|---|---|---|
| committer | Henrik Nord <[email protected]> | 2011-05-17 11:57:25 +0200 |
| commit | 0d2d95e4e3605d31d7032914ed623a91ef01ff25 (patch) | |
| tree | 5dfe3d43ef6a24df423834fc864e834660c03b71 /lib/mnesia/src/mnesia_lib.erl | |
| parent | 23db3a53e9c77eee4b1b94bd26c13a9c68718189 (diff) | |
| parent | 8d7963d76fb651f6cb250033a0a5a643abd01389 (diff) | |
| download | otp-0d2d95e4e3605d31d7032914ed623a91ef01ff25.tar.gz otp-0d2d95e4e3605d31d7032914ed623a91ef01ff25.tar.bz2 otp-0d2d95e4e3605d31d7032914ed623a91ef01ff25.zip | |
Merge branch 'uw/mnesia-majority' into dev
* uw/mnesia-majority:
dialyzer warning on mnesia_tm
Add documentation text about majority checking
add mnesia_majority_test suite
where_to_wlock optimization + change_table_majority/2
bug in mnesia_tm:needs_majority/2
optimize sticky_lock maj. check
check majority for sticky locks
Write locks now check majority when needed.
Add {majority, boolean()} per-table option.
OTP-9304
Diffstat (limited to 'lib/mnesia/src/mnesia_lib.erl')
| -rw-r--r-- | lib/mnesia/src/mnesia_lib.erl | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/lib/mnesia/src/mnesia_lib.erl b/lib/mnesia/src/mnesia_lib.erl index 36bcfe8de9..7e926a6258 100644 --- a/lib/mnesia/src/mnesia_lib.erl +++ b/lib/mnesia/src/mnesia_lib.erl @@ -96,6 +96,8 @@ exists/1, fatal/2, get_node_number/0, + have_majority/2, + have_majority/3, fix_error/1, important/2, incr_counter/1, @@ -660,6 +662,14 @@ proc_info(_) -> false. get_node_number() -> {node(), self()}. +have_majority(Tab, HaveNodes) -> + have_majority(Tab, val({Tab, all_nodes}), HaveNodes). + +have_majority(_Tab, AllNodes, HaveNodes) -> + Missing = AllNodes -- HaveNodes, + Present = AllNodes -- Missing, + length(Present) > length(Missing). + read_log_files() -> [{F, catch file:read_file(F)} || F <- mnesia_log:log_files()]. |