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-rw-r--r--lib/kernel/src/Makefile10
-rw-r--r--lib/kernel/src/application.erl16
-rw-r--r--lib/kernel/src/error_handler.erl53
3 files changed, 41 insertions, 38 deletions
diff --git a/lib/kernel/src/Makefile b/lib/kernel/src/Makefile
index 60291bbce6..eaced4861a 100644
--- a/lib/kernel/src/Makefile
+++ b/lib/kernel/src/Makefile
@@ -170,13 +170,13 @@ docs:
# ----------------------------------------------------
../../hipe/main/hipe.hrl: ../../hipe/vsn.mk ../../hipe/main/hipe.hrl.src
- sed -e "s;%VSN%;$(HIPE_VSN);" ../../hipe/main/hipe.hrl.src > ../../hipe/main/hipe.hrl
+ $(vsn_verbose)sed -e "s;%VSN%;$(HIPE_VSN);" ../../hipe/main/hipe.hrl.src > ../../hipe/main/hipe.hrl
$(APP_TARGET): $(APP_SRC) ../vsn.mk
- sed -e 's;%VSN%;$(KERNEL_VSN);' $< > $@
+ $(vsn_verbose)sed -e 's;%VSN%;$(KERNEL_VSN);' $< > $@
$(APPUP_TARGET): $(APPUP_SRC) ../vsn.mk
- sed -e 's;%VSN%;$(KERNEL_VSN);' $< > $@
+ $(vsn_verbose)sed -e 's;%VSN%;$(KERNEL_VSN);' $< > $@
EPMD_FLAGS = -Depmd_port_no=$(EPMD_PORT_NO) \
@@ -186,10 +186,10 @@ EPMD_FLAGS = -Depmd_port_no=$(EPMD_PORT_NO) \
-Derlang_daemon_port=$(EPMD_PORT_NO)
$(ESRC)/inet_dns_record_adts.hrl: $(ESRC)/inet_dns_record_adts.pl
- LANG=C $(PERL) $< > $@
+ $(gen_verbose)LANG=C $(PERL) $< > $@
$(EBIN)/erl_epmd.beam: $(ESRC)/erl_epmd.erl
- $(ERLC) $(ERL_COMPILE_FLAGS) $(EPMD_FLAGS) -o$(EBIN) $<
+ $(V_ERLC) $(ERL_COMPILE_FLAGS) $(EPMD_FLAGS) -o$(EBIN) $<
# ----------------------------------------------------
# Release Target
diff --git a/lib/kernel/src/application.erl b/lib/kernel/src/application.erl
index 9b7c4aa7b8..4e65883be7 100644
--- a/lib/kernel/src/application.erl
+++ b/lib/kernel/src/application.erl
@@ -23,7 +23,7 @@
which_applications/0, which_applications/1,
loaded_applications/0, permit/2]).
-export([set_env/3, set_env/4, unset_env/2, unset_env/3]).
--export([get_env/1, get_env/2, get_all_env/0, get_all_env/1]).
+-export([get_env/1, get_env/2, get_env/3, get_all_env/0, get_all_env/1]).
-export([get_key/1, get_key/2, get_all_key/0, get_all_key/1]).
-export([get_application/0, get_application/1, info/0]).
-export([start_type/0]).
@@ -264,6 +264,20 @@ get_env(Key) ->
get_env(Application, Key) ->
application_controller:get_env(Application, Key).
+-spec get_env(Application, Par, Def) -> Val when
+ Application :: atom(),
+ Par :: atom(),
+ Def :: term(),
+ Val :: term().
+
+get_env(Application, Key, Def) ->
+ case get_env(Application, Key) of
+ {ok, Val} ->
+ Val;
+ undefined ->
+ Def
+ end.
+
-spec get_all_env() -> Env when
Env :: [{Par :: atom(), Val :: term()}].
diff --git a/lib/kernel/src/error_handler.erl b/lib/kernel/src/error_handler.erl
index f8bc5f499c..a3aa1f1dcf 100644
--- a/lib/kernel/src/error_handler.erl
+++ b/lib/kernel/src/error_handler.erl
@@ -23,10 +23,12 @@
%% "error_handler: add no_native compiler directive"
-compile(no_native).
-%% A simple error handler.
+%% Callbacks called from the run-time system.
+-export([undefined_function/3,undefined_lambda/3,breakpoint/3]).
--export([undefined_function/3, undefined_lambda/3, stub_function/3,
- breakpoint/3]).
+%% Exported utility functions.
+-export([raise_undef_exception/3]).
+-export([stub_function/3]).
-spec undefined_function(Module, Function, Args) ->
any() when
@@ -41,12 +43,7 @@ undefined_function(Module, Func, Args) ->
true ->
apply(Module, Func, Args);
false ->
- case check_inheritance(Module, Args) of
- {value, Base, Args1} ->
- apply(Base, Func, Args1);
- none ->
- crash(Module, Func, Args)
- end
+ call_undefined_function_handler(Module, Func, Args)
end;
{module, _} ->
crash(Module, Func, Args);
@@ -77,6 +74,14 @@ undefined_lambda(Module, Fun, Args) ->
breakpoint(Module, Func, Args) ->
(int()):eval(Module, Func, Args).
+-spec raise_undef_exception(Module, Function, Args) -> no_return() when
+ Module :: atom(),
+ Function :: atom(),
+ Args :: list().
+
+raise_undef_exception(Module, Func, Args) ->
+ crash({Module,Func,Args,[]}).
+
%% Used to make the call to the 'int' module a "weak" one, to avoid
%% building strong components in xref or dialyzer.
@@ -130,27 +135,11 @@ ensure_loaded(Module) ->
stub_function(Mod, Func, Args) ->
exit({undef,[{Mod,Func,Args,[]}]}).
-check_inheritance(Module, Args) ->
- Attrs = erlang:get_module_info(Module, attributes),
- case lists:keyfind(extends, 1, Attrs) of
- {extends, [Base]} when is_atom(Base), Base =/= Module ->
- %% This is just a heuristic for detecting abstract modules
- %% with inheritance so they can be handled; it would be
- %% much better to do it in the emulator runtime
- case lists:keyfind(abstract, 1, Attrs) of
- {abstract, [true]} ->
- case lists:reverse(Args) of
- [M|Rs] when tuple_size(M) > 1,
- element(1,M) =:= Module,
- tuple_size(element(2,M)) > 0,
- is_atom(element(1,element(2,M))) ->
- {value, Base, lists:reverse(Rs, [element(2,M)])};
- _ ->
- {value, Base, Args}
- end;
- _ ->
- {value, Base, Args}
- end;
- _ ->
- none
+call_undefined_function_handler(Module, Func, Args) ->
+ Handler = '$handle_undefined_function',
+ case erlang:function_exported(Module, Handler, 2) of
+ false ->
+ crash(Module, Func, Args);
+ true ->
+ Module:Handler(Func, Args)
end.