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author | Dan Gudmundsson <dgud@erlang.org> | 2014-04-29 10:09:08 +0200 |
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committer | Dan Gudmundsson <dgud@erlang.org> | 2015-03-27 13:15:24 +0100 |
commit | a83bf960f1018217d7f3c9c8387a37722aa93fc6 (patch) | |
tree | fddad434266d4af2e4835d4b071be9a4c798f5ec /lib/mnesia/src/mnesia_dumper.erl | |
parent | bb7642ee5f326b25425634cfc40baa385f5ab3fa (diff) | |
download | otp-a83bf960f1018217d7f3c9c8387a37722aa93fc6.tar.gz otp-a83bf960f1018217d7f3c9c8387a37722aa93fc6.tar.bz2 otp-a83bf960f1018217d7f3c9c8387a37722aa93fc6.zip |
mnesia: Replace catch with try-catch
Avoids building stacktraces where it is not needed and do
not mask errors, i.e. only catch the relevant classes in each try.
Diffstat (limited to 'lib/mnesia/src/mnesia_dumper.erl')
-rw-r--r-- | lib/mnesia/src/mnesia_dumper.erl | 97 |
1 files changed, 45 insertions, 52 deletions
diff --git a/lib/mnesia/src/mnesia_dumper.erl b/lib/mnesia/src/mnesia_dumper.erl index 14665797a0..d2e5ec3b30 100644 --- a/lib/mnesia/src/mnesia_dumper.erl +++ b/lib/mnesia/src/mnesia_dumper.erl @@ -122,7 +122,7 @@ perform_dump(InitBy, Regulator) -> U = mnesia_monitor:get_env(dump_log_update_in_place), Cont = mnesia_log:init_log_dump(), mnesia_recover:sync(), - case catch do_perform_dump(Cont, U, InitBy, Regulator, undefined) of + try do_perform_dump(Cont, U, InitBy, Regulator, undefined) of ok -> ?eval_debug_fun({?MODULE, post_dump}, [InitBy]), case mnesia_monitor:use_dir() of @@ -133,17 +133,15 @@ perform_dump(InitBy, Regulator) -> end, mnesia_recover:allow_garb(), %% And now to the crucial point... - mnesia_log:confirm_log_dump(Diff); - {error, Reason} -> - {error, Reason}; - {'EXIT', {Desc, Reason}} -> + mnesia_log:confirm_log_dump(Diff) + catch exit:Reason when Reason =/= fatal -> case mnesia_monitor:get_env(auto_repair) of true -> - mnesia_lib:important(Desc, Reason), + mnesia_lib:important(error, Reason), %% Ignore rest of the log mnesia_log:confirm_log_dump(Diff); false -> - fatal(Desc, Reason) + fatal(error, Reason) end end; {error, Reason} -> @@ -161,24 +159,25 @@ scan_decisions(Fname, InitBy, Regulator) -> mnesia_log:open_log(Name, Header, Fname, Exists, mnesia_monitor:get_env(auto_repair), read_only), Cont = start, - Res = (catch do_perform_dump(Cont, false, InitBy, Regulator, undefined)), - mnesia_log:close_log(Name), - case Res of - ok -> ok; - {'EXIT', Reason} -> {error, Reason} + try + do_perform_dump(Cont, false, InitBy, Regulator, undefined) + catch exit:Reason when Reason =/= fatal -> + {error, Reason} + after mnesia_log:close_log(Name) end end. do_perform_dump(Cont, InPlace, InitBy, Regulator, OldVersion) -> case mnesia_log:chunk_log(Cont) of {C2, Recs} -> - case catch insert_recs(Recs, InPlace, InitBy, Regulator, OldVersion) of - {'EXIT', R} -> - Reason = {"Transaction log dump error: ~p~n", [R]}, - close_files(InPlace, {error, Reason}, InitBy), - exit(Reason); + try insert_recs(Recs, InPlace, InitBy, Regulator, OldVersion) of Version -> do_perform_dump(C2, InPlace, InitBy, Regulator, Version) + catch _:R when R =/= fatal -> + ST = erlang:get_stacktrace(), + Reason = {"Transaction log dump error: ~p~n", [{R, ST}]}, + close_files(InPlace, {error, Reason}, InitBy), + exit(Reason) end; eof -> close_files(InPlace, ok, InitBy), @@ -288,17 +287,16 @@ perform_update(Tid, SchemaOps, _DumperMode, _UseDir) -> InitBy = fast_schema_update, InPlace = mnesia_monitor:get_env(dump_log_update_in_place), - ?eval_debug_fun({?MODULE, dump_schema_op}, [InitBy]), - case catch insert_ops(Tid, schema_ops, SchemaOps, InPlace, InitBy, - mnesia_log:version()) of - {'EXIT', Reason} -> - Error = {error, {"Schema update error", Reason}}, + try insert_ops(Tid, schema_ops, SchemaOps, InPlace, InitBy, + mnesia_log:version()), + ?eval_debug_fun({?MODULE, post_dump}, [InitBy]), + close_files(InPlace, ok, InitBy), + ok + catch _:Reason when Reason =/= fatal -> + ST = erlang:get_stacktrace(), + Error = {error, {"Schema update error", {Reason, ST}}}, close_files(InPlace, Error, InitBy), - fatal("Schema update error ~p ~p", [Reason, SchemaOps]); - _ -> - ?eval_debug_fun({?MODULE, post_dump}, [InitBy]), - close_files(InPlace, ok, InitBy), - ok + fatal("Schema update error ~p ~p", [{Reason,ST}, SchemaOps]) end. insert_ops(_Tid, _Storage, [], _InPlace, _InitBy, _) -> ok; @@ -347,13 +345,11 @@ dets_insert(Op,Tab,Key,Val) -> case dets_incr_counter(Tab,Key) of true -> {RecName, Incr} = Val, - case catch dets:update_counter(Tab, Key, Incr) of - CounterVal when is_integer(CounterVal) -> - ok; - _ when Incr < 0 -> + try _ = dets:update_counter(Tab, Key, Incr) + catch error:_ when Incr < 0 -> Zero = {RecName, Key, 0}, ok = dets:insert(Tab, Zero); - _ -> + error:_ -> Init = {RecName, Key, Incr}, ok = dets:insert(Tab, Init) end; @@ -771,7 +767,7 @@ insert_op(Tid, _, {op, clear_table, TabDef}, InPlace, InitBy) -> end, %% Need to catch this, it crashes on ram_copies if %% the op comes before table is loaded at startup. - catch insert(Tid, Storage, Tab, '_', Oid, clear_table, InPlace, InitBy) + ?CATCH(insert(Tid, Storage, Tab, '_', Oid, clear_table, InPlace, InitBy)) end; insert_op(Tid, _, {op, merge_schema, TabDef}, InPlace, InitBy) -> @@ -1042,14 +1038,13 @@ prepare_open(Tab, UpdateInPlace) -> Dat; false -> Tmp = mnesia_lib:tab2tmp(Tab), - case catch mnesia_lib:copy_file(Dat, Tmp) of - ok -> - Tmp; - Error -> + try ok = mnesia_lib:copy_file(Dat, Tmp) + catch error:Error -> fatal("Cannot copy dets file ~p to ~p: ~p~n", [Dat, Tmp, Error]) - end - end. + end, + Tmp + end. del_opened_tab(Tab) -> erase({?MODULE, Tab}). @@ -1171,18 +1166,16 @@ raw_named_dump_table(Tab, Ftype) -> Storage = ram_copies, mnesia_lib:db_fixtable(Storage, Tab, true), - case catch raw_dump_table(TabRef, Tab) of - {'EXIT', Reason} -> - mnesia_lib:db_fixtable(Storage, Tab, false), - mnesia_lib:dets_sync_close(Tab), - file:delete(TmpFname), - mnesia_lib:unlock_table(Tab), - exit({"Dump of table to disc failed", Reason}); - ok -> - mnesia_lib:db_fixtable(Storage, Tab, false), - mnesia_lib:dets_sync_close(Tab), - mnesia_lib:unlock_table(Tab), - ok = file:rename(TmpFname, Fname) + try + ok = raw_dump_table(TabRef, Tab), + ok = file:rename(TmpFname, Fname) + catch _:Reason -> + ?SAFE(file:delete(TmpFname)), + exit({"Dump of table to disc failed", Reason}) + after + mnesia_lib:db_fixtable(Storage, Tab, false), + mnesia_lib:dets_sync_close(Tab), + mnesia_lib:unlock_table(Tab) end; {error, Reason} -> mnesia_lib:unlock_table(Tab), @@ -1248,6 +1241,6 @@ regulate(RegulatorPid) -> val(Var) -> case ?catch_val(Var) of - {'EXIT', Reason} -> mnesia_lib:other_val(Var, Reason); + {'EXIT', _} -> mnesia_lib:other_val(Var); Value -> Value end. |