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-rw-r--r--lib/os_mon/src/cpu_sup.erl118
1 files changed, 34 insertions, 84 deletions
diff --git a/lib/os_mon/src/cpu_sup.erl b/lib/os_mon/src/cpu_sup.erl
index 34251178ee..72d392b804 100644
--- a/lib/os_mon/src/cpu_sup.erl
+++ b/lib/os_mon/src/cpu_sup.erl
@@ -3,16 +3,17 @@
%%
%% Copyright Ericsson AB 1997-2012. All Rights Reserved.
%%
-%% The contents of this file are subject to the Erlang Public License,
-%% Version 1.1, (the "License"); you may not use this file except in
-%% compliance with the License. You should have received a copy of the
-%% Erlang Public License along with this software. If not, it can be
-%% retrieved online at http://www.erlang.org/.
+%% 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
%%
-%% Software distributed under the License is distributed on an "AS IS"
-%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
-%% the License for the specific language governing rights and limitations
-%% under the License.
+%% 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%
%%
@@ -121,7 +122,7 @@ util(Args) when is_list (Args) ->
util(_) ->
erlang:error(badarg).
--spec util() -> float().
+-spec util() -> float() | {'error', any()}.
util() ->
case util([]) of
@@ -160,7 +161,8 @@ handle_call(?quit, _From, State) ->
handle_call({?util, D, PC}, {Client, _Tag},
#state{os_type = {unix, Flavor}} = State)
when Flavor == sunos;
- Flavor == linux ->
+ Flavor == linux;
+ Flavor == freebsd ->
case measurement_server_call(State#state.server, {?util, D, PC, Client}) of
{error, Reason} ->
{ reply,
@@ -217,11 +219,9 @@ code_change(_OldVsn, State, _Extra) ->
%% internal functions
%%----------------------------------------------------------------------
-get_uint32_measurement(Request, #internal{port = P, os_type = {unix, sunos}}) ->
- port_server_call(P, Request);
get_uint32_measurement(Request, #internal{os_type = {unix, linux}}) ->
{ok,F} = file:open("/proc/loadavg",[read,raw]),
- {ok,D} = file:read(F,24),
+ {ok,D} = file:read_line(F),
ok = file:close(F),
{ok,[Load1,Load5,Load15,_PRun,PTotal],_} = io_lib:fread("~f ~f ~f ~d/~d", D),
case Request of
@@ -231,67 +231,13 @@ get_uint32_measurement(Request, #internal{os_type = {unix, linux}}) ->
?ping -> 4711;
?nprocs -> PTotal
end;
-get_uint32_measurement(Request, #internal{os_type = {unix, freebsd}}) ->
- D = os:cmd("/sbin/sysctl -n vm.loadavg") -- "\n",
- {ok,[Load1,Load5,Load15],_} = io_lib:fread("{ ~f ~f ~f }", D),
- %% We could count the lines from the ps command as well
- case Request of
- ?avg1 -> sunify(Load1);
- ?avg5 -> sunify(Load5);
- ?avg15 -> sunify(Load15);
- ?ping -> 4711;
- ?nprocs ->
- Ps = os:cmd("/bin/ps -ax | /usr/bin/wc -l"),
- {ok, [N], _} = io_lib:fread("~d", Ps),
- N-1
- end;
-get_uint32_measurement(Request, #internal{os_type = {unix, dragonfly}}) ->
- D = os:cmd("/sbin/sysctl -n vm.loadavg") -- "\n",
- {ok,[Load1,Load5,Load15],_} = io_lib:fread("{ ~f ~f ~f }", D),
- %% We could count the lines from the ps command as well
- case Request of
- ?avg1 -> sunify(Load1);
- ?avg5 -> sunify(Load5);
- ?avg15 -> sunify(Load15);
- ?ping -> 4711;
- ?nprocs ->
- Ps = os:cmd("/bin/ps -ax | /usr/bin/wc -l"),
- {ok, [N], _} = io_lib:fread("~d", Ps),
- N-1
- end;
-get_uint32_measurement(Request, #internal{os_type = {unix, openbsd}}) ->
- D = os:cmd("/sbin/sysctl -n vm.loadavg") -- "\n",
- {ok, [L1, L5, L15], _} = io_lib:fread("~f ~f ~f", D),
- case Request of
- ?avg1 -> sunify(L1);
- ?avg5 -> sunify(L5);
- ?avg15 -> sunify(L15);
- ?ping -> 4711;
- ?nprocs ->
- Ps = os:cmd("/bin/ps -ax | /usr/bin/wc -l"),
- {ok, [N], _} = io_lib:fread("~d", Ps),
- N-1
- end;
-get_uint32_measurement(Request, #internal{os_type = {unix, darwin}}) ->
- %% Get the load average using uptime, overriding Locale setting.
- D = os:cmd("LANG=C LC_ALL=C uptime") -- "\n",
- %% Here is a sample uptime string from Mac OS 10.3.8 (C Locale):
- %% "11:17 up 12 days, 20:39, 2 users, load averages: 1.07 0.95 0.66"
- %% The safest way to extract the load averages seems to be grab everything
- %% after the last colon and then do an fread on that.
- Avg = lists:reverse(hd(string:tokens(lists:reverse(D), ":"))),
- {ok,[L1,L5,L15],_} = io_lib:fread("~f ~f ~f", Avg),
-
- case Request of
- ?avg1 -> sunify(L1);
- ?avg5 -> sunify(L5);
- ?avg15 -> sunify(L15);
- ?ping -> 4711;
- ?nprocs ->
- Ps = os:cmd("/bin/ps -ax | /usr/bin/wc -l"),
- {ok, [N], _} = io_lib:fread("~d", Ps),
- N-1
- end;
+get_uint32_measurement(Request, #internal{port = P, os_type = {unix, Sys}}) when
+ Sys == sunos;
+ Sys == dragonfly;
+ Sys == openbsd;
+ Sys == freebsd;
+ Sys == darwin ->
+ port_server_call(P, Request);
get_uint32_measurement(Request, #internal{os_type = {unix, Sys}}) when Sys == irix64;
Sys == irix ->
%% Get the load average using uptime.
@@ -541,13 +487,16 @@ measurement_server_init() ->
process_flag(trap_exit, true),
OS = os:type(),
Server = case OS of
- {unix, Flavor} when Flavor==sunos;
- Flavor==linux ->
- port_server_start();
- {unix, Flavor} when Flavor==darwin;
+ {unix, Flavor} when
+ Flavor==sunos;
+ Flavor==linux;
+ Flavor==darwin;
Flavor==freebsd;
Flavor==dragonfly;
- Flavor==openbsd;
+ Flavor==openbsd ->
+ {ok, Pid} = port_server_start_link(),
+ Pid;
+ {unix, Flavor} when
Flavor==irix64;
Flavor==irix ->
not_used;
@@ -588,8 +537,9 @@ measurement_server_loop(State) ->
Error -> Pid ! {error, Error}
end,
measurement_server_loop(State);
- {'EXIT', Pid, _n} when State#internal.port == Pid ->
- measurement_server_loop(State#internal{port = port_server_start()});
+ {'EXIT', OldPid, _n} when State#internal.port == OldPid ->
+ {ok, NewPid} = port_server_start_link(),
+ measurement_server_loop(State#internal{port = NewPid});
_Other ->
measurement_server_loop(State)
end.
@@ -605,12 +555,12 @@ port_server_call(Pid, Command) ->
{Pid, {error, Reason}} -> {error, Reason}
end.
-port_server_start() ->
+port_server_start_link() ->
Timeout = 6000,
Pid = spawn_link(fun() -> port_server_init(Timeout) end),
Pid ! {self(), ?ping},
receive
- {Pid, {data,4711}} -> Pid;
+ {Pid, {data,4711}} -> {ok, Pid};
{error,Reason} -> {error, Reason}
after Timeout ->
{error, timeout}
generated by cgit v1.2.3 (git 2.25.1) at 2024-07-13 23:05:21 +0000