diff options
| -rw-r--r-- | lib/mnesia/src/Makefile | 2 | ||||
| -rw-r--r-- | lib/mnesia/src/mnesia.app.src | 2 | ||||
| -rw-r--r-- | lib/mnesia/src/mnesia.erl | 1 | ||||
| -rw-r--r-- | lib/mnesia/src/mnesia_backend_type.erl | 115 | ||||
| -rw-r--r-- | lib/mnesia/src/mnesia_ext_sup.erl | 59 | ||||
| -rw-r--r-- | lib/mnesia/src/mnesia_sup.erl | 8 |
6 files changed, 186 insertions, 1 deletions
diff --git a/lib/mnesia/src/Makefile b/lib/mnesia/src/Makefile index dae0df76f3..3134a15138 100644 --- a/lib/mnesia/src/Makefile +++ b/lib/mnesia/src/Makefile @@ -43,6 +43,7 @@ RELSYSDIR = $(RELEASE_PATH)/lib/mnesia-$(VSN) # ---------------------------------------------------- MODULES= \ mnesia \ + mnesia_backend_type \ mnesia_backup \ mnesia_bup \ mnesia_checkpoint \ @@ -50,6 +51,7 @@ MODULES= \ mnesia_controller \ mnesia_dumper\ mnesia_event \ + mnesia_ext_sup \ mnesia_frag \ mnesia_frag_hash \ mnesia_frag_old_hash \ diff --git a/lib/mnesia/src/mnesia.app.src b/lib/mnesia/src/mnesia.app.src index c78a7cba1e..006ad4bac1 100644 --- a/lib/mnesia/src/mnesia.app.src +++ b/lib/mnesia/src/mnesia.app.src @@ -3,6 +3,7 @@ {vsn, "%VSN%"}, {modules, [ mnesia, + mnesia_backend_type, mnesia_backup, mnesia_bup, mnesia_checkpoint, @@ -10,6 +11,7 @@ mnesia_controller, mnesia_dumper, mnesia_event, + mnesia_ext_sup, mnesia_frag, mnesia_frag_hash, mnesia_frag_old_hash, diff --git a/lib/mnesia/src/mnesia.erl b/lib/mnesia/src/mnesia.erl index 2fdc7afacd..d0dc9eb13b 100644 --- a/lib/mnesia/src/mnesia.erl +++ b/lib/mnesia/src/mnesia.erl @@ -297,6 +297,7 @@ ms() -> %% Keep these last in the list, so %% mnesia_sup kills these last + mnesia_ext_sup, mnesia_monitor, mnesia_event ]. diff --git a/lib/mnesia/src/mnesia_backend_type.erl b/lib/mnesia/src/mnesia_backend_type.erl new file mode 100644 index 0000000000..4791b82a01 --- /dev/null +++ b/lib/mnesia/src/mnesia_backend_type.erl @@ -0,0 +1,115 @@ +%% +%% %CopyrightBegin% +%% +%% Copyright Ericsson AB 1996-2015. All Rights Reserved. +%% +%% Licensed under the Apache License, Version 2.0 (the "License"); +%% you may not use this file except in compliance with the License. +%% You may obtain a copy of the License at +%% +%% http://www.apache.org/licenses/LICENSE-2.0 +%% +%% Unless required by applicable law or agreed to in writing, software +%% distributed under the License is distributed on an "AS IS" BASIS, +%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +%% See the License for the specific language governing permissions and +%% limitations under the License. +%% +%% %CopyrightEnd% +%% + +%% +%% Behaviour definition for mnesia backend types. +%% + +%%%header_doc_include + +-module(mnesia_backend_type). + +-export([behaviour_info/1]). + +%%%header_doc_include + +%%%impl_doc_include + +%% Note that mnesia considers all callbacks mandatory!! +%% +behaviour_info(callbacks) -> + [ + {add_aliases, 1}, % (Aliases) -> ok + {check_definition, 4}, % (TypeAlias, Tab, Nodes, Properties) -> ok + {close_table, 2}, % (TypeAlias, Tab) -> ok + {create_table, 3}, % (TypeAlias, Tab, Properties) -> ok + {delete, 3}, % (TypeAlias, Tab, Key) -> true | ok + {delete_table, 2}, % (TypeAlias, Tab) -> ok + {first, 2}, % (TypeAlias, Tab) -> Key::Term | '$end_of_table' + {fixtable, 3}, % (TypeAlias, Tab, Bool) -> ok | true + {last, 2}, % (TypeAlias, Tab) -> Key::Term | '$end_of_table' + {index_is_consistent,3}, % (TypeAlias, IxTag, Bool) -> ok + {init_backend, 0}, % () -> ok + {info, 3}, % (TypeAlias, Tab, Item) -> Term + {insert, 3}, % (TypeAlias, Tab, Object) -> ok + {lookup, 3}, % (TypeAlias, Tab, Key) -> [Objects] + {is_index_consistent,2}, % (TypeAlias, IxTag) -> Bool + {load_table, 4}, % (TypeAlias, Tab, Reason, CsList) -> ok + {match_delete, 3}, % (TypeAlias, Tab, Pattern) -> ok + {next, 3}, % (TypeAlias, Tab, Key) -> Key::Term | '$end_of_table' + {prev, 3}, % (TypeAlias, Tab, Key) -> Key::Term | '$end_of_table' + {receiver_first_message, 4}, % (Sender, FirstMsg, Alias, Tab) -> {Size, State} + {receive_data, 5}, % (Data, Alias, Name, Sender, State) -> {more, State} | {{more, Msg}, State} + {receive_done, 4}, % (Alias, Tab, Sender, State) -> ok + {real_suffixes, 0}, % () -> [FileSuffix] + {remove_aliases, 1}, % (Aliases) -> ok + {repair_continuation, 2}, % (Continuation, MatchSpec) -> Continuation + {select, 1}, % (Continuation) -> {[Match], Continuation'} | '$end_of_table' + {select, 3}, % (TypeAlias, Tab, Pattern) -> {[Match], Continuation'} | '$end_of_table' + {select, 4}, % (TypeAlias, Tab, MatchSpec, Limit) {[Match], Continuation'} | '$end_of_table' + {sender_init, 4}, % (TypeAlias, Tab, LoadReason, Pid) -> + % {standard, Init(), Chunk()} | {Init(), Chunk()} + {semantics, 2}, % (TypeAlias, storage | types | index_fun | index_types) -> + % ram_copies | disc_copies, set | ordered_set | bag, fun(), ordered | bag + {slot, 3}, % (TypeAlias, Tab, Pos) -> '$end_of_table' | Objects | {error, Reason} + {sync_close_table, 2}, % (TypeAlias, Tab) -> ok + {tmp_suffixes, 0}, % () -> [FileSuffix] + {update_counter, 4}, % (TypeAlias, Tab, Counter, Val) -> NewVal + {validate_key, 6}, % (TypeAlias, Tab, RecName, Arity, Type, Key) -> {RecName, Arity, Type} + {validate_record, 6} % (TypeAlias, Tab, RecName, Arity, Type, Obj) -> {RecName, Arity, Type} + ]. + +%%%impl_doc_include + +%% -type tab() :: atom(). +%% -type alias() :: atom(). +%% -type rec_name() :: atom(). +%% -type type() :: set | bag | ordered_set. +%% -type proplist() :: [{atom(), any()}]. +%% -type key() :: any(). +%% -type db_object() :: tuple(). + +%% -type matchspec() :: ets:match_spec(). +%% -type limit() :: integer() | infinity. + +%% -type cont_fun() :: any(). +%% -type cont() :: '$end_of_table' | cont_fun(). + +%% -callback check_definition(alias(), tab(), [node()], proplist()) -> ok. +%% -callback create_table(alias(), tab(), proplist()) -> tab(). +%% -callback load_table(alias(), tab(), any()) -> ok. +%% -callback delete_table(alias(), tab()) -> ok. +%% -callback first(alias(), tab()) -> key(). +%% -callback last(alias(), tab()) -> key(). +%% -callback next(alias(), tab(), key()) -> key(). +%% -callback prev(alias(), tab(), key()) -> key(). +%% -callback insert(alias(), tab(), db_object()) -> ok. +%% -callback lookup(alias(), tab(), key()) -> [db_object()]. +%% -callback delete(alias(), tab(), key()) -> ok. +%% -callback update_counter(alias(), tab(), key(), integer()) -> integer(). +%% -callback select(cont()) -> {list(), cont()}. +%% -callback select(alias(), tab(), matchspec()) -> list() | '$end_of_table'. +%% -callback select(alias(), tab(), matchspec(), limit()) -> {list(), cont()}. +%% -callback slot(alias(), tab(), integer()) -> key(). +%% -callback validate_key(alias(), tab(), rec_name(), arity(), type(), key()) -> +%% {rec_name(), arity(), type()}. +%% -callback validate_record(alias(),tab(),rec_name(),arity(),type(),db_obj()) -> +%% {rec_name(), arity(), type()}. +%% -callback repair_continuation(cont(), matchspec()) -> cont(). diff --git a/lib/mnesia/src/mnesia_ext_sup.erl b/lib/mnesia/src/mnesia_ext_sup.erl new file mode 100644 index 0000000000..3e6c72161c --- /dev/null +++ b/lib/mnesia/src/mnesia_ext_sup.erl @@ -0,0 +1,59 @@ +%% +%% %CopyrightBegin% +%% +%% Copyright Ericsson AB 1996-2015. All Rights Reserved. +%% +%% Licensed under the Apache License, Version 2.0 (the "License"); +%% you may not use this file except in compliance with the License. +%% You may obtain a copy of the License at +%% +%% http://www.apache.org/licenses/LICENSE-2.0 +%% +%% Unless required by applicable law or agreed to in writing, software +%% distributed under the License is distributed on an "AS IS" BASIS, +%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +%% See the License for the specific language governing permissions and +%% limitations under the License. +%% +%% %CopyrightEnd% +%% + +%% +%% This module implements a supervisor for external (plug-in) processes + +-module(mnesia_ext_sup). +-behaviour(supervisor). + +-export([start/0, + init/1, + start_proc/4, start_proc/5, + stop_proc/1]). + +-define(SHUTDOWN, 120000). % 2 minutes + +start() -> + supervisor:start_link({local, ?MODULE}, ?MODULE, []). + +start_proc(Name, M, F, A) -> + start_proc(Name, M, F, A, []). + +start_proc(Name, M, F, A, Opts) -> + [Restart, Shutdown, Type, Modules] = + [proplists:get_value(K, Opts, Default) + || {K, Default} <- [{restart, transient}, + {shutdown, ?SHUTDOWN}, + {type, worker}, + {modules, [M]}]], + case supervisor:start_child( + ?MODULE, {Name, {M,F,A}, Restart, Shutdown, Type, Modules}) of + {error, already_present} -> + supervisor:restart_child(?MODULE, Name); + Other -> + Other + end. + +stop_proc(Name) -> + supervisor:terminate_child(?MODULE, Name). + +init(_) -> + {ok, {{one_for_all, 10, 60}, []}}. diff --git a/lib/mnesia/src/mnesia_sup.erl b/lib/mnesia/src/mnesia_sup.erl index 3a9360aa6d..b8dd4f48a6 100644 --- a/lib/mnesia/src/mnesia_sup.erl +++ b/lib/mnesia/src/mnesia_sup.erl @@ -60,9 +60,10 @@ init() -> Flags = {one_for_all, 0, 3600}, % Should be rest_for_one policy Event = event_procs(), + Ext = ext_procs(), Kernel = kernel_procs(), - {ok, {Flags, Event ++ Kernel}}. + {ok, {Flags, Event ++ Ext ++ Kernel}}. event_procs() -> KillAfter = timer:seconds(30), @@ -75,6 +76,11 @@ kernel_procs() -> KA = infinity, [{K, {K, start, []}, permanent, KA, supervisor, [K, supervisor]}]. +ext_procs() -> + K = mnesia_ext_sup, + KA = infinity, + [{K, {K, start, []}, permanent, KA, supervisor, [K, supervisor]}]. + %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% %% event handler |