diff options
Diffstat (limited to 'lib/sasl')
| -rw-r--r-- | lib/sasl/doc/src/overload.xml | 6 | ||||
| -rw-r--r-- | lib/sasl/doc/src/sasl_app.xml | 6 | ||||
| -rw-r--r-- | lib/sasl/src/overload.erl | 2 | ||||
| -rw-r--r-- | lib/sasl/src/release_handler_1.erl | 67 |
4 files changed, 57 insertions, 24 deletions
diff --git a/lib/sasl/doc/src/overload.xml b/lib/sasl/doc/src/overload.xml index 5c3d00afeb..2f19cd9088 100644 --- a/lib/sasl/doc/src/overload.xml +++ b/lib/sasl/doc/src/overload.xml @@ -35,6 +35,12 @@ <module>overload</module> <modulesummary>An Overload Regulation Process</modulesummary> <description> + <warning> + <p> + All functions in this module are deprecated and will be + removed in a future release. + </p> + </warning> <p><c>overload</c> is a process that indirectly regulates the CPU usage in the system. The idea is that a main application calls function diff --git a/lib/sasl/doc/src/sasl_app.xml b/lib/sasl/doc/src/sasl_app.xml index 8d79251c7e..bcd446a868 100644 --- a/lib/sasl/doc/src/sasl_app.xml +++ b/lib/sasl/doc/src/sasl_app.xml @@ -34,7 +34,7 @@ <p>The <c>SASL</c> application provides the following services:</p> <list type="bulleted"> <item><c>alarm_handler</c></item> - <item><c>overload</c></item> + <item><c>overload</c> (deprecated)</item> <item><c>rb</c></item> <item><c>release_handler</c></item> <item><c>systools</c></item> @@ -145,11 +145,15 @@ <p>Specifies the maximum intensity for <seealso marker="overload"><c>overload</c></seealso>. Default is <c>0.8</c>.</p> + <p>Note that the <c>overload</c> module is deprected and + will be removed in a future release.</p> </item> <tag><c><![CDATA[overload_weight = float() > 0 ]]></c></tag> <item> <p>Specifies the <seealso marker="overload"><c>overload</c></seealso> weight. Default is <c>0.1</c>.</p> + <p>Note that the <c>overload</c> module is deprected and + will be removed in a future release.</p> </item> <tag><c><![CDATA[start_prg = string() ]]></c></tag> <item> diff --git a/lib/sasl/src/overload.erl b/lib/sasl/src/overload.erl index 61b925d219..bc8ab7d5e4 100644 --- a/lib/sasl/src/overload.erl +++ b/lib/sasl/src/overload.erl @@ -19,6 +19,8 @@ %% -module(overload). +-deprecated(module). + -export([start_link/0, request/0, set_config_data/2, get_overload_info/0]). diff --git a/lib/sasl/src/release_handler_1.erl b/lib/sasl/src/release_handler_1.erl index 536ac924d4..5e9a35ab4c 100644 --- a/lib/sasl/src/release_handler_1.erl +++ b/lib/sasl/src/release_handler_1.erl @@ -587,12 +587,12 @@ get_supervised_procs() -> get_application_names()). get_supervised_procs(_, Root, Procs, {ok, SupMod}) -> - get_procs(maybe_supervisor_which_children(get_proc_state(Root), SupMod, Root), Root) ++ + get_procs(maybe_supervisor_which_children(Root, SupMod, Root), Root) ++ [{undefined, undefined, Root, [SupMod]} | Procs]; get_supervised_procs(Application, Root, Procs, {error, _}) -> error_logger:error_msg("release_handler: cannot find top supervisor for " "application ~w~n", [Application]), - get_procs(maybe_supervisor_which_children(get_proc_state(Root), Application, Root), Root) ++ Procs. + get_procs(maybe_supervisor_which_children(Root, Application, Root), Root) ++ Procs. get_application_names() -> lists:map(fun({Application, _Name, _Vsn}) -> @@ -613,33 +613,54 @@ get_procs([{Name, Pid, worker, Mods} | T], Sup) when is_pid(Pid), is_list(Mods) [{Sup, Name, Pid, Mods} | get_procs(T, Sup)]; get_procs([{Name, Pid, supervisor, Mods} | T], Sup) when is_pid(Pid) -> [{Sup, Name, Pid, Mods} | get_procs(T, Sup)] ++ - get_procs(maybe_supervisor_which_children(get_proc_state(Pid), Name, Pid), Pid); + get_procs(maybe_supervisor_which_children(Pid, Name, Pid), Pid); get_procs([_H | T], Sup) -> get_procs(T, Sup); get_procs(_, _Sup) -> []. +maybe_supervisor_which_children(Proc, Name, Pid) -> + case get_proc_state(Proc) of + noproc -> + %% process exited before we could interrogate it. + %% not necessarily a bug, but reporting a warning as a curiosity. + error_logger:warning_msg("release_handler: a process (~p) exited" + " during supervision tree interrogation." + " Continuing ...~n", [Proc]), + []; + + suspended -> + error_logger:error_msg("release_handler: a which_children call" + " to ~p (~w) was avoided. This supervisor" + " is suspended and should likely be upgraded" + " differently. Exiting ...~n", [Name, Pid]), + error(suspended_supervisor); + + running -> + case catch supervisor:which_children(Pid) of + Res when is_list(Res) -> + Res; + Other -> + error_logger:error_msg("release_handler: ~p~nerror during" + " a which_children call to ~p (~w)." + " [State: running] Exiting ... ~n", + [Other, Name, Pid]), + error(which_children_failed) + end + end. + get_proc_state(Proc) -> - {status, _, {module, _}, [_, State, _, _, _]} = sys:get_status(Proc), - State. - -maybe_supervisor_which_children(suspended, Name, Pid) -> - error_logger:error_msg("release_handler: a which_children call" - " to ~p (~w) was avoided. This supervisor" - " is suspended and should likely be upgraded" - " differently. Exiting ...~n", [Name, Pid]), - error(suspended_supervisor); - -maybe_supervisor_which_children(State, Name, Pid) -> - case catch supervisor:which_children(Pid) of - Res when is_list(Res) -> - Res; - Other -> - error_logger:error_msg("release_handler: ~p~nerror during" - " a which_children call to ~p (~w)." - " [State: ~p] Exiting ... ~n", - [Other, Name, Pid, State]), - error(which_children_failed) + %% sys:send_system_msg can exit with {noproc, {m,f,a}}. + %% This happens if a supervisor exits after which_children has provided + %% its pid for interrogation. + %% ie. Proc may no longer be running at this point. + try sys:get_status(Proc) of + %% as per sys:get_status/1, SysState can only be running | suspended. + {status, _, {module, _}, [_, State, _, _, _]} when State == running ; + State == suspended -> + State + catch exit:{noproc, {sys, get_status, [Proc]}} -> + noproc end. maybe_get_dynamic_mods(Name, Pid) -> |