diff options
Diffstat (limited to 'lib/sasl/src/release_handler_1.erl')
| -rw-r--r-- | lib/sasl/src/release_handler_1.erl | 59 |
1 files changed, 22 insertions, 37 deletions
diff --git a/lib/sasl/src/release_handler_1.erl b/lib/sasl/src/release_handler_1.erl index 3d6bc9fbc3..ff62f847ac 100644 --- a/lib/sasl/src/release_handler_1.erl +++ b/lib/sasl/src/release_handler_1.erl @@ -33,7 +33,7 @@ %% libdirs = [{Lib, LibVsn, LibDir}] - Maps Lib to Vsn and Directory %% unpurged = [{Mod, soft_purge | brutal_purge}] %% vsns = [{Mod, OldVsn, NewVsn}] - remember the old vsn of a mod -%% before it is removed/a new vsn is loaded; the new vsn +%% before a new vsn is loaded; the new vsn %% is kept in case of a downgrade, where the code_change %% function receives the vsn of the module to downgrade %% *to*. @@ -224,7 +224,7 @@ eval({load_object_code, {Lib, LibVsn, Modules}}, EvalState) -> FName = filename:join([LibDir, "ebin", File]), case erl_prim_loader:get_file(FName) of {ok, Bin, FName2} -> - NVsns = add_new_vsn(Mod, Bin, Vsns), + NVsns = add_vsns(Mod, Bin, Vsns), {[{Mod, Bin, FName2} | Bins],NVsns}; error -> throw({error, {no_such_file,FName}}) @@ -258,32 +258,21 @@ eval({load, {Mod, _PrePurgeMethod, PostPurgeMethod}}, EvalState) -> {value, {_Mod, Bin, File}} = lists:keysearch(Mod, 1, Bins), % load_binary kills all procs running old code % if soft_purge, we know that there are no such procs now - Vsns = EvalState#eval_state.vsns, - NewVsns = add_old_vsn(Mod, Vsns), code:load_binary(Mod, File, Bin), % Now, the prev current is old. There might be procs % running it. Find them. Unpurged = do_soft_purge(Mod,PostPurgeMethod,EvalState#eval_state.unpurged), EvalState#eval_state{bins = lists:keydelete(Mod, 1, Bins), - unpurged = Unpurged, - vsns = NewVsns}; + unpurged = Unpurged}; eval({remove, {Mod, _PrePurgeMethod, PostPurgeMethod}}, EvalState) -> - % purge kills all procs running old code - % if soft_purge, we know that there are no such procs now - Vsns = EvalState#eval_state.vsns, - NewVsns = add_old_vsn(Mod, Vsns), + %% purge kills all procs running old code + %% if soft_purge, we know that there are no such procs now code:purge(Mod), code:delete(Mod), - % Now, the prev current is old. There might be procs - % running it. Find them. - Unpurged = - case code:soft_purge(Mod) of - true -> EvalState#eval_state.unpurged; - false -> [{Mod, PostPurgeMethod} | EvalState#eval_state.unpurged] - end, -%% Bins = EvalState#eval_state.bins, -%% EvalState#eval_state{bins = lists:keydelete(Mod, 1, Bins), - EvalState#eval_state{unpurged = Unpurged, vsns = NewVsns}; + %% Now, the prev current is old. There might be procs + %% running it. Find them. + Unpurged = do_soft_purge(Mod,PostPurgeMethod,EvalState#eval_state.unpurged), + EvalState#eval_state{unpurged = Unpurged}; eval({purge, Modules}, EvalState) -> % Now, if there are any processes still executing old code, OR % if some new processes started after suspend but before load, @@ -606,26 +595,20 @@ sync_nodes(Id, Nodes) -> end, NNodes). -add_old_vsn(Mod, Vsns) -> +add_vsns(Mod, NewBin, Vsns) -> + OldVsn = get_current_vsn(Mod), + NewVsn = get_vsn(NewBin), case lists:keysearch(Mod, 1, Vsns) of - {value, {Mod, undefined, NewVsn}} -> - OldVsn = get_current_vsn(Mod), - lists:keyreplace(Mod, 1, Vsns, {Mod, OldVsn, NewVsn}); - {value, {Mod, _OldVsn, _NewVsn}} -> - Vsns; + {value, {Mod, OldVsn0, NewVsn0}} -> + lists:keyreplace(Mod, 1, Vsns, {Mod, + replace_undefined(OldVsn0,OldVsn), + replace_undefined(NewVsn0,NewVsn)}); false -> - OldVsn = get_current_vsn(Mod), - [{Mod, OldVsn, undefined} | Vsns] + [{Mod, OldVsn, NewVsn} | Vsns] end. -add_new_vsn(Mod, Bin, Vsns) -> - NewVsn = get_vsn(Bin), - case lists:keysearch(Mod, 1, Vsns) of - {value, {Mod, OldVsn, undefined}} -> - lists:keyreplace(Mod, 1, Vsns, {Mod, OldVsn, NewVsn}); - false -> - [{Mod, undefined, NewVsn} | Vsns] - end. +replace_undefined(undefined,Vsn) -> Vsn; +replace_undefined(Vsn,_) -> Vsn. %%----------------------------------------------------------------- %% Func: get_current_vsn/1 @@ -645,7 +628,9 @@ get_current_vsn(Mod) -> {ok, Bin, _File2} -> get_vsn(Bin); error -> - throw({error, {no_such_file, File}}) + %% This is the case when a new module is added, there will + %% be no current version of it at the time of this call. + undefined end. %%----------------------------------------------------------------- |